技术领域Technical field
本发明涉及一种发光模块。The invention relates to a light emitting module.
背景技术Background technique
以往，广泛使用具有LED(Light Emitting Diode：发光二极管)等半导体元件的发光模块。作为这样的发光模块，例如在专利文献1中，公开了一种具有光源单元、透镜和盖部件且在盖部件的一部分上形成有由多个平行的槽构成的扩散部的结构。In the past, light-emitting modules including semiconductor elements such as LEDs (Light Emitting Diodes) have been widely used. As such a light-emitting module, for example, Patent Document 1 discloses a structure including a light source unit, a lens, and a cover member, and a diffusion portion composed of a plurality of parallel grooves formed on a part of the cover member.
专利文献1：国际公开第2015/125557号Patent Document 1: International Publication No. 2015/125557
发明内容Contents of the invention
<本发明要解决的问题><Problems to be Solved by the Invention>
在发光模块中，要求减少照射面的杂散光。In light-emitting modules, it is required to reduce stray light on the illuminated surface.
本发明的实施方式的目的在于提供一种减少照射面的杂散光的发光模块。An object of embodiments of the present invention is to provide a light-emitting module that reduces stray light on an irradiation surface.
<用于解决问题的方法><Methods used to solve the problem>
本发明的一实施方式的发光模块包括：光源；透镜，配置在所述光源上，透射来自所述光源的光；以及盖部件，配置在所述透镜上，所述盖部件在俯视时包含第一区域、第二区域和第三区域，所述第二区域设置在所述第一区域的周围，所述第二区域的光扩散性比所述第一区域的光扩散性高，所述第三区域位于所述第一区域的内侧，透过所述透镜后的来自所述光源的光在所述第三区域入射。A light-emitting module according to an embodiment of the present invention includes: a light source; a lens arranged on the light source to transmit light from the light source; and a cover member arranged on the lens, the cover member including a third A region, a second region and a third region, the second region is arranged around the first region, the light diffusivity of the second region is higher than that of the first region, the third region The third area is located inside the first area, and the light from the light source that passes through the lens is incident on the third area.
<发明的效果><Effects of the Invention>
根据本发明的实施方式，能够提供一种减少照射面的杂散光的发光模块。According to the embodiment of the present invention, it is possible to provide a light-emitting module that reduces stray light on an irradiation surface.
附图说明Description of the drawings
图1是表示实施方式的发光模块的一个示例的示意性俯视图。FIG. 1 is a schematic plan view showing an example of a light emitting module according to an embodiment.
图2A是图1中II-II线的示意性剖面图。FIG. 2A is a schematic cross-sectional view along line II-II in FIG. 1 .
图2B是示出实施方式的透镜部的另一第一示例的示意性剖面图。2B is a schematic cross-sectional view showing another first example of the lens portion of the embodiment.
图2C是示出实施方式的透镜部的另一第二示例的示意性剖面图。FIG. 2C is a schematic cross-sectional view showing another second example of the lens portion according to the embodiment.
图3是表示图1的发光模块中的光源的结构示例的示意性俯视图。FIG. 3 is a schematic plan view showing a structural example of the light source in the light-emitting module of FIG. 1 .
图4是图3中IV-IV线的示意性剖面图。FIG. 4 is a schematic cross-sectional view along line IV-IV in FIG. 3 .
图5是图1中II-II线的示意性剖面图，且是表示图1的发光模块中的盖部件的作用的第一图。FIG. 5 is a schematic cross-sectional view taken along line II-II in FIG. 1 , and is a first view showing the function of the cover member in the light-emitting module of FIG. 1 .
图6是图1中VI-VI线的示意性剖面图，且是表示图1的发光模块中的盖部件的作用的第二图。6 is a schematic cross-sectional view taken along line VI-VI in FIG. 1 , and is a second diagram illustrating the function of the cover member in the light emitting module of FIG. 1 .
图7A是表示实施例和参考例的发光模块的照度分布的图。FIG. 7A is a diagram showing illuminance distribution of the light emitting modules of the embodiment and the reference example.
图7B是表示照射面上的照度分布的模拟结果示例的第一图。FIG. 7B is a first diagram showing an example of simulation results of illuminance distribution on an irradiation surface.
图7C是表示照射面上的照度分布的模拟结果示例的第二图。FIG. 7C is a second diagram showing an example of simulation results of the illuminance distribution on the irradiation surface.
图8是表示第一变形例的发光模块的一个示例的示意性剖面图。FIG. 8 is a schematic cross-sectional view showing an example of the light-emitting module according to the first modified example.
图9是表示第二变形例的发光模块的一个示例的示意性俯视图。FIG. 9 is a schematic plan view showing an example of the light-emitting module according to the second modification.
图10是图9中X-X线的示意性剖面图。FIG. 10 is a schematic cross-sectional view along the X-X line in FIG. 9 .
图11是表示第三变形例的发光模块的一个示例的示意性剖面图。FIG. 11 is a schematic cross-sectional view showing an example of a light-emitting module according to a third modification example.
图12A是表示第四变形例的发光模块的第一示例的示意性剖面图。FIG. 12A is a schematic cross-sectional view showing a first example of the light-emitting module according to the fourth modified example.
图12B是表示参考例的发光模块的一个示例的示意性剖面图。12B is a schematic cross-sectional view showing an example of the light-emitting module of the reference example.
图12C是表示第四变形例的发光模块的第二示例的示意性剖面图。12C is a schematic cross-sectional view showing a second example of the light-emitting module according to the fourth modification.
图12D是表示第四变形例的发光模块的第三示例的示意性剖面图。FIG12D is a schematic cross-sectional view showing a third example of the light emitting module according to the fourth modification.
图13是表示第五变形例的发光模块的一个示例的示意性剖面图。FIG. 13 is a schematic cross-sectional view showing an example of the light-emitting module according to the fifth modification example.
图14是表示第六变形例的发光模块的光源附近的示意性剖面图。14 is a schematic cross-sectional view showing the vicinity of the light source of the light-emitting module according to the sixth modification example.
附图标记说明Description of Reference Numerals
1光源；10、10-1～10-9发光部；11、11-1～11-9发光面；12发光元件；13电极；14波长转换部件；15遮光部件；16发光区域；2、2b、2c、2d透镜；20光轴；21有效部；22透镜部；23第一凸面；24第二凸面；3、3a盖部件；31第一区域；32第二区域；33第三区域；4、4c、4d透镜支承部；41凹部；5第一安装基板；51布线；52导电性粘接部件；7粘接部件；8电子部件；9第二安装基板；60照射面；61照射光；62杂散光；71～74发光图案；100、100a、100b、100c、100d发光模块；C中心；d最短距离；dx第一发光面间隔；dy第二发光面间隔；dS1台阶；dR1角部；D最长距离；f焦距；F焦点；G外缘；L光；m距离；P点；W最大宽度；Wx、Wy宽度。1 light source; 10, 10-1 to 10-9 light-emitting parts; 11, 11-1 to 11-9 light-emitting surface; 12 light-emitting element; 13 electrode; 14 wavelength conversion part; 15 light-shielding part; 16 light-emitting area; 2, 2b , 2c, 2d lens; 20 optical axis; 21 effective part; 22 lens part; 23 first convex surface; 24 second convex surface; 3, 3a cover part; 31 first area; 32 second area; 33 third area; 4 , 4c, 4d lens support part; 41 concave part; 5 first mounting substrate; 51 wiring; 52 conductive adhesive parts; 7 adhesive parts; 8 electronic components; 9 second mounting substrate; 60 irradiation surface; 61 irradiation light; 62 stray light; 71~74 light-emitting patterns; 100, 100a, 100b, 100c, 100d light-emitting modules; C center; d shortest distance; dx first light-emitting surface interval; dy second light-emitting surface interval; dS1 step; dR1 corner; D longest distance; f focal length; F focus; G outer edge; L light; m distance; P point; W maximum width; Wx, Wy width.
具体实施方式Detailed ways
将参照附图详细说明本发明的实施方式的发光模块。但是，以下所示的方式是例示用于体现本实施方式的技术思想的发光模块的方式，并不限于以下。此外，在实施方式中记载的构成部件的尺寸、材质、形状、其相对配置等，只要没有特定的记载，就不是将本发明的范围仅限于此的意思，而只是单纯的说明示例。注意，各图所示的部件的大小、位置关系等有时为了清楚说明而夸大。此外，在以下的说明中，对于相同的名称、符号表示相同或同质的部件，适当省略详细说明。作为剖面图，有时使用仅表示切断面的端面图。The light emitting module according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the modes shown below are illustrative of the light-emitting module for embodying the technical idea of the present embodiment, and are not limited to the following. In addition, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the embodiments are not intended to limit the scope of the present invention and are merely illustrative examples unless otherwise specified. Note that the size, positional relationship, etc. of components shown in each figure may be exaggerated for clarity of explanation. In addition, in the following description, the same names and symbols represent the same or similar components, and detailed descriptions are appropriately omitted. As a cross-sectional view, an end view showing only a cut surface may be used.
在以下所示的图中，有时通过X轴、Y轴和Z轴表示方向，其中X轴、Y轴和Z轴是相互正交的方向。沿着X轴的X方向以及沿着Y轴的Y方向表示沿着实施方式的发光模块所具备的发光部的发光面的方向。沿着Z轴的Z方向表示与上述发光面正交的方向。即，发光部的发光面与XY平面平行，Z轴与XY平面正交。In the figures shown below, directions may be expressed by the X-axis, Y-axis, and Z-axis, which are directions orthogonal to each other. The X direction along the X axis and the Y direction along the Y axis represent directions along the light emitting surface of the light emitting part included in the light emitting module of the embodiment. The Z direction along the Z axis represents a direction orthogonal to the light emitting surface. That is, the light-emitting surface of the light-emitting part is parallel to the XY plane, and the Z-axis is orthogonal to the XY plane.
在X方向上箭头所指的方向记作+X方向或+X侧，+X方向的相反方向记作-X方向或-X侧，在Y方向上箭头所指的方向记作+Y方向或+Y侧，+Y方向的相反方向记作-Y方向或-Y侧。在Z方向上箭头所指的方向记作+Z方向或+Z侧，+Z方向的相反方向记作-Z方向或-Z侧。在实施方式中，作为一个示例，设发光模块所具备的发光部向+Z侧发出光。此外，实施方式的用语中的俯视是指从+Z方向观察对象。但是，这些并不限制发光模块使用时的朝向，发光模块的朝向是任意的。此外，在本实施方式中，将从+Z方向或+Z侧观察时的对象物的面作为“上表面”，将从-Z方向或-Z侧观察时的对象物的面作为“下表面”。在以下所示的实施方式中，“沿着X轴、Y轴和Z轴”包括对象相对于这些轴具有±10°范围内的倾斜。此外，在本实施方式中，“正交”也可以包含相对于90°在±10°以内的误差。The direction pointed by the arrow in the +Y side, the opposite direction of +Y direction is recorded as -Y direction or -Y side. The direction pointed by the arrow in the Z direction is denoted as +Z direction or +Z side, and the opposite direction of +Z direction is denoted as -Z direction or -Z side. In the embodiment, as an example, it is assumed that the light-emitting part provided in the light-emitting module emits light toward the +Z side. In addition, the plan view in the terminology of the embodiment means observing the object from the +Z direction. However, these do not limit the orientation of the light-emitting module when used, and the orientation of the light-emitting module is arbitrary. In addition, in this embodiment, the surface of the object when viewed from the +Z direction or the +Z side is referred to as the "upper surface", and the surface of the object when viewed from the -Z direction or the -Z side is referred to as the "lower surface". ". In the embodiment shown below, "along the X, Y, and Z axes" includes that the object has a tilt within a range of ±10° relative to these axes. In addition, in this embodiment, "orthogonal" may include an error within ±10° with respect to 90°.
[实施方式][Implementation Method]
<发光模块的整体结构示例><Example of the overall structure of the light-emitting module>
参照图1和图2A，对实施方式的发光模块的整体结构进行说明。图1是表示实施方式的发光模块100的一个示例的示意性俯视图。图2A是图1中II-II线的示意性剖面图。作为一个示例，发光模块100是搭载在智能手机上、设置在智能手机上的摄像装置中的闪光灯用的发光模块。摄像装置包括拍摄静止图像的照相机、拍摄动态图像的摄像机等。The overall structure of the light-emitting module according to the embodiment will be described with reference to FIGS. 1 and 2A . FIG. 1 is a schematic plan view showing an example of the light emitting module 100 according to the embodiment. FIG. 2A is a schematic cross-sectional view along line II-II in FIG. 1 . As an example, the light-emitting module 100 is a light-emitting module for a flash mounted on a smartphone and installed in a camera device on the smartphone. The imaging device includes a camera that takes still images, a camera that takes moving images, and the like.
在本实施方式中，发光模块100具有光源1、透镜2和盖部件3。如图1所示，发光模块100在俯视时具有大致圆形的外形形状。但是，发光模块100在俯视时，也可以具有大致矩形、大致椭圆形或大致多边形等外形形状。In this embodiment, the light emitting module 100 includes a light source 1, a lens 2, and a cover member 3. As shown in Fig. 1, the light emitting module 100 has a substantially circular shape when viewed from above. However, the light emitting module 100 may also have a substantially rectangular, substantially elliptical, or substantially polygonal shape when viewed from above.
光源1安装在第一安装基板5的上表面(+Z侧的面)。光源1具有包括至少一个发光表面的发光区域16。在图1和图2A的示例中，光源1具备分别具有发光面11的九个发光部10。包含多个发光面11的区域是发光区域16的一个示例。在发光面11为一个的情况下，发光区域16是由发光面11的外缘包围的区域。在光源1包含多个发光面11的情况下，发光区域16是连接俯视时位于外侧的发光面11彼此的外缘的区域。光源1从多个发光部10各自包含的发光面11向透镜2的方向发出光L。注意，光源1所包含的发光部10的个数并不限于九个，只要是至少一个即可。The light source 1 is mounted on the upper surface (surface on the +Z side) of the first mounting substrate 5. The light source 1 has a light emitting area 16 including at least one light emitting surface. In the examples of FIG. 1 and FIG. 2A , the light source 1 has nine light emitting portions 10 each having a light emitting surface 11. An area including a plurality of light emitting surfaces 11 is an example of the light emitting area 16. In the case where there is one light emitting surface 11, the light emitting area 16 is an area surrounded by the outer edge of the light emitting surface 11. In the case where the light source 1 includes a plurality of light emitting surfaces 11, the light emitting area 16 is an area connecting the outer edges of the light emitting surfaces 11 located on the outside when viewed from above. The light source 1 emits light L in the direction of the lens 2 from the light emitting surface 11 included in each of the plurality of light emitting portions 10. Note that the number of light emitting portions 10 included in the light source 1 is not limited to nine, as long as there is at least one.
多个发光部10可以分别单独点亮，也可以按组点亮。通过使多个发光部10以所期望的亮度分别单独点亮或按组点亮，能够提高来自光源1的光照射的照射面中的对比度。此外，通过使多个发光部10分别单独点亮或按组点亮，发光模块100能够在照射面进行部分照射。这里，“部分照射”是指对照射面中的一部分区域照射光。The plurality of light emitting units 10 may be lit individually or in groups. By lighting the plurality of light-emitting portions 10 individually or in groups with desired brightness, the contrast in the irradiation surface irradiated with light from the light source 1 can be improved. In addition, by lighting the plurality of light-emitting parts 10 individually or in groups, the light-emitting module 100 can perform partial illumination on the irradiation surface. Here, "partial irradiation" means irradiating a part of the irradiation surface with light.
部分照射由于对照射面中的一部分区域照射光，因此为了使照射所期望的区域的光醒目，优选照射光的外缘清晰。即，优选地，想要照射光的所期望的区域与所期望的区域以外的区域的照射光的照度差大。即，优选地，在照射面中想要照射光的所期望的区域中，照射光周围的杂散光较少。Partial irradiation irradiates light to a part of the irradiation surface. Therefore, in order to make the light irradiating a desired area stand out, it is preferable that the outer edge of the irradiation light is clear. That is, it is preferable that the illuminance difference between the desired area to be irradiated with light and the area other than the desired area is large. That is, it is preferable that there is less stray light around the irradiation light in a desired area of the irradiation surface where light is to be irradiated.
在将本实施方式的发光模块100用作摄像装置的闪光灯用的光源的情况下，例如能够在使所有的发光部10发光的广角模式和仅使位于发光区域16的中央附近的发光部10发光而不使位于发光区域16的外缘附近的发光部10发光的窄角模式之间切换来照射光。在窄角模式中，光的照射角度比广角模式窄。由于发光模块100能够对应于广角模式和窄角模式来切换照射光，所以例如能够进行与摄像装置中的近摄或远摄等拍摄模式对应的拍摄。When the light-emitting module 100 of this embodiment is used as a light source for a flash of an imaging device, for example, it is possible to operate in a wide-angle mode in which all the light-emitting parts 10 emit light, or in a wide-angle mode in which only the light-emitting part 10 located near the center of the light-emitting area 16 emits light. The light-emitting part 10 located near the outer edge of the light-emitting area 16 is switched between narrow-angle modes to emit light without causing it to emit light. In narrow-angle mode, the angle of light illumination is narrower than in wide-angle mode. Since the light-emitting module 100 can switch the irradiation light according to the wide-angle mode and the narrow-angle mode, for example, it is possible to perform imaging corresponding to the imaging mode such as close-up or telephoto in the imaging device.
在本实施方式中，透过透镜2后的多个发光部10各自的光照射位于以透镜2的光轴20上的点P为中心而与多个发光部10各自的位置相反的一侧的区域。由此，容易掌握多个发光部10与作为照射来自发光模块100的光L的面的照射面中的发光部10的照射位置之间的关系，光的控制变得容易。即，发光模块100能够对照射面部分照射光。此外，由于发光部10的光L的大部分透过透镜2的第一凸面23和第二凸面24，所以能够将来自光源1的光照射到所期望的区域。注意，关于光源1的结构，使用图3和图4另行详细说明。In the present embodiment, the light of each of the plurality of light-emitting units 10 after passing through the lens 2 irradiates an area located on the side opposite to the respective positions of the plurality of light-emitting units 10, centered at point P on the optical axis 20 of the lens 2. Thus, it is easy to grasp the relationship between the irradiation positions of the plurality of light-emitting units 10 and the irradiation surface, which is the surface irradiating the light L from the light-emitting module 100, and light control becomes easy. That is, the light-emitting module 100 can irradiate light to a portion of the irradiation surface. In addition, since most of the light L from the light-emitting unit 10 passes through the first convex surface 23 and the second convex surface 24 of the lens 2, the light from the light source 1 can be irradiated to a desired area. Note that the structure of the light source 1 is described in detail using FIGS. 3 and 4 .
第一安装基板5是在俯视时具有大致圆形的外形形状的板状部件。但是，第一安装基板5在俯视时也可以具有大致矩形、大致椭圆形或大致多边形等外形形状。第一安装基板5是具备能够安装光源1或各种电气元件的配线的基板。The first mounting substrate 5 is a plate-shaped member having a substantially circular outer shape in plan view. However, the first mounting substrate 5 may have an outer shape such as a substantially rectangular shape, a substantially elliptical shape, or a substantially polygonal shape in plan view. The first mounting substrate 5 is a substrate provided with wiring capable of mounting the light source 1 or various electrical components.
透镜2是配置在光源1上并透射来自光源1的光L的光学元件。透镜2包括有效部21和透镜部22。有效部21由第一凸面23和第二凸面24构成。第一凸面23向光源1所处的方向(-Z侧)突出。第二凸面24向与光源1所处的方向相反的方向(+Z侧)突出。透镜部22在俯视时是设置在有效部21的外侧的环状部分。The lens 2 is an optical element arranged on the light source 1 and transmits the light L from the light source 1 . The lens 2 includes an effective portion 21 and a lens portion 22 . The effective portion 21 is composed of a first convex surface 23 and a second convex surface 24 . The first convex surface 23 protrudes toward the direction in which the light source 1 is located (-Z side). The second convex surface 24 protrudes in the opposite direction (+Z side) to the direction in which the light source 1 is located. The lens portion 22 is an annular portion provided outside the effective portion 21 in plan view.
在本实施方式中，透镜部22在光出射面上包括菲涅耳形状。在图2A的示例中，光出射面是透镜2的+Z侧的面。透镜部22的菲涅耳形状在俯视时，特别是通过反射从外侧的发光部10朝向发光模块100的外侧的光(杂散光)，能够作为照射光而利用。此外，透镜部22的菲涅耳形状弥补了在与光轴20正交的方向上越远离光轴20越降低的透镜2的聚光性能。发光模块100由于透镜部22具有菲涅耳形状，所以能够降低杂散光。In this embodiment, the lens portion 22 has a Fresnel shape on the light exit surface. In the example of FIG. 2A , the light exit surface is the +Z side surface of the lens 2 . The Fresnel shape of the lens portion 22 can be used as irradiation light by reflecting light (stray light) from the outer light-emitting portion 10 toward the outside of the light-emitting module 100 in plan view. In addition, the Fresnel shape of the lens portion 22 compensates for the light condensing performance of the lens 2 that decreases as the distance from the optical axis 20 increases in the direction orthogonal to the optical axis 20 . In the light emitting module 100, since the lens portion 22 has a Fresnel shape, stray light can be reduced.
如图2B所示，透镜部22也可以在光入射面上包含菲涅耳形状。在图2B的示例中，光入射面是透镜2的-Z侧的面。此外，如图2C所示，透镜部22也可以在光入射面和光出射面上包含菲涅耳形状。注意，菲涅耳形状可以是同心圆状的多个凸部，优选是包含全反射面的凸部。As shown in FIG. 2B , the lens portion 22 may have a Fresnel shape on the light incident surface. In the example of FIG. 2B , the light incident surface is the −Z side surface of the lens 2 . In addition, as shown in FIG. 2C , the lens portion 22 may have a Fresnel shape on the light incident surface and the light exit surface. Note that the Fresnel shape may be a plurality of concentric convex portions, and is preferably a convex portion including a total reflection surface.
在本实施方式中，透镜2包括凸透镜。透镜2的有效部21由第一凸面23和第二凸面24构成双凸的单透镜。来自光源1的光L通过第一凸面23和第二凸面24在位于中心P的焦点F暂时聚焦后，作为发散的光照射到照射面。包括凸透镜的透镜2的焦点F位于透镜2的+Z侧，在来自各发光部10的光聚集到焦点F后扩散。由此，例如在将发光模块100搭载于智能手机等的情况下，能够减少从发光模块100照射的光被智能手机等的壳体遮挡，能够通过透镜2高效地照射来自光源1的光L。但是，透镜2不限于双凸的单透镜，也可以是平凸的单透镜、双凹的单透镜、平凹的单透镜、菲涅耳透镜、由多个透镜构成的组透镜、阵列透镜、弯月面的单透镜、非球面透镜、柱面透镜等其他形态。In the present embodiment, the lens 2 includes a convex lens. The effective portion 21 of the lens 2 is a biconvex single lens composed of a first convex surface 23 and a second convex surface 24. The light L from the light source 1 is temporarily focused at the focus F located at the center P by the first convex surface 23 and the second convex surface 24, and then irradiated to the irradiation surface as divergent light. The focus F of the lens 2 including the convex lens is located on the +Z side of the lens 2, and the light from each light-emitting unit 10 is focused at the focus F and then diffused. Thus, for example, when the light-emitting module 100 is mounted on a smartphone, etc., it is possible to reduce the light irradiated from the light-emitting module 100 from being blocked by the housing of the smartphone, etc., and the light L from the light source 1 can be efficiently irradiated through the lens 2. However, the lens 2 is not limited to a biconvex single lens, and may also be a plano-convex single lens, a biconcave single lens, a plano-concave single lens, a Fresnel lens, a group lens composed of a plurality of lenses, an array lens, a meniscus single lens, an aspherical lens, a cylindrical lens, and other forms.
透镜2在俯视时具有大致圆形的外形形状。但是，透镜2在俯视时也可以具有大致矩形、大致椭圆形或大致多边形等外形形状。考虑到一般的摄像装置的拍摄范围为大致矩形，俯视时的透镜2的外形形状优选为四次旋转对称形状或两次旋转对称形状。在透镜2中，也可以适当变更第一凸面23和第二凸面24的曲率半径的大小、各自的曲率半径的大小关系、透镜的厚度等。The lens 2 has a substantially circular outer shape in plan view. However, the lens 2 may have an outer shape such as a substantially rectangular shape, a substantially elliptical shape, or a substantially polygonal shape in plan view. Considering that the imaging range of a general imaging device is approximately rectangular, the outer shape of the lens 2 when viewed from above is preferably a four-fold rotational symmetry shape or a two-fold rotational symmetry shape. In the lens 2 , the size of the curvature radii of the first convex surface 23 and the second convex surface 24 , the relationship between the respective curvature radii, the thickness of the lens, etc. may be appropriately changed.
透镜2对于光源1发出的光具有透光性，包含聚碳酸酯树脂、丙烯酸树脂、硅酮树脂、环氧树脂等树脂材料或玻璃材料中的至少一种而构成。注意，透镜2的透光性是指能够透射来自光源1的光的60％以上的性质。The lens 2 is translucent to the light emitted by the light source 1 and is composed of at least one of a resin material such as polycarbonate resin, acrylic resin, silicone resin, and epoxy resin, or a glass material. Note that the light transmittance of the lens 2 refers to the property of being able to transmit 60% or more of the light from the light source 1 .
盖部件3是配置在透镜2上的部件。在图1和图2A的示例中，盖部件3是板状部件。盖部件3在俯视时与光源1和透镜2重叠。盖部件3在俯视时具有大致圆形的外形形状。但是，盖部件3在俯视时也可以具有大致矩形、大致椭圆形或大致多边形等外形形状。The cover member 3 is disposed on the lens 2 . In the example of FIGS. 1 and 2A , the cover member 3 is a plate-shaped member. The cover member 3 overlaps the light source 1 and the lens 2 in plan view. The cover member 3 has a substantially circular outer shape in plan view. However, the cover member 3 may have an outer shape such as a substantially rectangular shape, a substantially elliptical shape, or a substantially polygonal shape in plan view.
在本实施方式中，盖部件3在俯视时具有第一区域31、第二区域32和第三区域33。第二区域32设置在第一区域31的周围，是光扩散性比第一区域31高的区域。在图1中，第二区域32是通过点图案填充显示的区域。第三区域33是第一区域31的内侧的、透过透镜2后的来自光源1的光L入射的区域。第三区域33的光扩散性低于第二区域32的光扩散性。此外，第三区域33的光扩散性也可以与第一区域31的光扩散性相同程度，或者比第一区域31的光扩散性低。在俯视时，第二区域32与透镜2的透镜部22重叠。In the present embodiment, the cover member 3 has a first area 31, a second area 32, and a third area 33 when viewed from above. The second area 32 is provided around the first area 31 and is an area having higher light diffusivity than the first area 31. In FIG. 1 , the second area 32 is an area filled and displayed by a dot pattern. The third area 33 is an area inside the first area 31 where the light L from the light source 1 after passing through the lens 2 is incident. The light diffusivity of the third area 33 is lower than that of the second area 32. In addition, the light diffusivity of the third area 33 may be the same as that of the first area 31, or lower than that of the first area 31. When viewed from above, the second area 32 overlaps with the lens portion 22 of the lens 2.
第二区域32的内缘和外缘各自的形状在俯视时为大致圆形。换言之，第二区域32是环形区域。但是，第二区域32的内缘和外缘各自的形状在俯视时可以不同，也可以具有大致矩形、大致椭圆形或大致多边形等形状。The shapes of the inner edge and the outer edge of the second region 32 are substantially circular in plan view. In other words, the second area 32 is an annular area. However, the shapes of the inner edge and the outer edge of the second region 32 may be different in plan view, and may have a substantially rectangular shape, a substantially elliptical shape, or a substantially polygonal shape.
在本实施方式中，在俯视时，第二区域32中的盖部件3的上表面和下表面中的至少一方为粗糙面。在图1和图2A的示例中，第二区域32中的盖部件3的下表面是粗糙面。另一方面，在第一区域31和第三区域33中，盖部件3的上表面和下表面是非粗糙面的平坦面。粗糙面的算术平均粗糙度Ra优选为0.3μm以上2.0μm以下，更优选为0.5μm以上1.5μm以下。粗糙面可以通过喷砂加工、激光加工、成形加工等形成。或者，粗糙面也可以是使用抛光处理前的玻璃表面的状态而不进行抛光处理。通过第二区域32中盖部件3的上表面和下表面的至少一方为粗糙面，第二区域32的光扩散性比第一区域31的高。通过使第二区域32的光扩散性比第一区域31的光扩散性高，第三区域33的光扩散性是其中最低的(优选几乎不具有光扩散性)，来自光源1的光中入射到第二区域32的光、即成为杂散光的光扩散并从第二区域32射出。由此，能够使透过第二区域32的光不醒目，并且使透过第一区域31的内侧的光、特别是透过第三区域33的光醒目。由于粗糙面可以简单地形成，所以能够通过简单的结构获得第二区域32的光扩散作用。In the present embodiment, when viewed from above, at least one of the upper surface and the lower surface of the cover part 3 in the second region 32 is a rough surface. In the examples of Figures 1 and 2A, the lower surface of the cover part 3 in the second region 32 is a rough surface. On the other hand, in the first region 31 and the third region 33, the upper surface and the lower surface of the cover part 3 are flat surfaces that are not rough surfaces. The arithmetic mean roughness Ra of the rough surface is preferably not less than 0.3 μm and not more than 2.0 μm, and more preferably not less than 0.5 μm and not more than 1.5 μm. The rough surface can be formed by sandblasting, laser processing, forming processing, etc. Alternatively, the rough surface can also be the state of the glass surface before polishing without polishing. By making at least one of the upper surface and the lower surface of the cover part 3 in the second region 32 a rough surface, the light diffusion property of the second region 32 is higher than that of the first region 31. By making the light diffusivity of the second region 32 higher than that of the first region 31, and the light diffusivity of the third region 33 the lowest (preferably having almost no light diffusivity), the light from the light source 1 that enters the second region 32, that is, the light that becomes stray light, is diffused and emitted from the second region 32. As a result, the light that passes through the second region 32 can be made inconspicuous, and the light that passes through the inner side of the first region 31, especially the light that passes through the third region 33, can be made conspicuous. Since the rough surface can be easily formed, the light diffusing effect of the second region 32 can be obtained with a simple structure.
本实施方式的发光模块100还具备支承透镜2的透镜支承部4。在本实施方式中，盖部件3的第二区域32经由粘接部件7配置在透镜支承部4上。在盖部件3的下表面，第二区域32具有粗糙面。通过第二区域32的粗糙面中包含的凹凸形状，经由粘接部件7的透镜支承部4与盖部件3的表观上的接触面积增加，因此能够提高由透镜支承部4对盖部件3的支承强度。The light-emitting module 100 of this embodiment further includes a lens support portion 4 that supports the lens 2 . In this embodiment, the second region 32 of the cover member 3 is arranged on the lens support part 4 via the adhesive member 7 . On the lower surface of the cover member 3, the second area 32 has a rough surface. The uneven shape included in the rough surface of the second region 32 increases the apparent contact area between the lens support portion 4 and the cover member 3 via the adhesive member 7 . Therefore, the contact between the lens support portion 4 and the cover member 3 can be improved. Support strength.
在本实施方式中，对于粗糙面，也可以在第二区域32中盖部件3的上表面和下表面的至少一方配置扩散物质。扩散物质可以使用氧化钛、钛酸钡、氧化铝、氧化硅等填料等。由于通过涂敷扩散物质等能够简单地进行向盖部件3表面的扩散物质的赋予，因此能够通过简单的结构获得第二区域32的光扩散作用。此外，粗糙面也可以在第二区域32中盖部件3的内部含有扩散物质。由于使盖部件3的内部含有扩散物质可以通过使构成盖部件3的树脂等预先含有来简单地进行，因此可以通过简单的结构获得第二区域32的光扩散作用。In this embodiment, regarding the rough surface, a diffusion material may be arranged on at least one of the upper surface and the lower surface of the cover member 3 in the second region 32 . Fillers such as titanium oxide, barium titanate, aluminum oxide, and silicon oxide can be used as the diffusion material. Since the diffusion substance can be easily applied to the surface of the cover member 3 by applying the diffusion substance or the like, the light diffusion effect of the second region 32 can be obtained with a simple structure. In addition, the rough surface may contain a diffusion substance inside the cover member 3 in the second region 32 . Since the diffusion material can be easily contained in the cover member 3 by containing resin or the like constituting the cover member 3 in advance, the light diffusion effect of the second region 32 can be obtained with a simple structure.
盖部件3对多个发光部10发出的光具有透光性，包含聚碳酸酯树脂、丙烯酸树脂、硅酮树脂、环氧树脂等树脂材料或玻璃材料中的至少一种而构成。注意，盖部件3的第三区域33的透光性是指能够透射来自光源1的光L的80％以上的性质。The cover member 3 is translucent to the light emitted by the plurality of light emitting parts 10 and is composed of at least one of a resin material such as polycarbonate resin, acrylic resin, silicone resin, and epoxy resin, or a glass material. Note that the light transmittance of the third region 33 of the cover member 3 refers to the property of being able to transmit 80% or more of the light L from the light source 1 .
在图1和图2A的示例中，透镜支承部4是俯视时具有大致圆形的形状的圆筒状部件。但是，透镜支承部4在俯视时也可以具有大致圆形、大致椭圆形或大致多边形等外形形状。In the example of FIGS. 1 and 2A , the lens support portion 4 is a cylindrical member having a substantially circular shape in plan view. However, the lens support portion 4 may have an outer shape such as a substantially circular shape, a substantially elliptical shape, or a substantially polygonal shape in plan view.
透镜支承部4也可以是具有遮光性的部件。例如，在发光模块100以闪光灯用途与照相机一起搭载在智能手机上的情况下，为了能够减少从发光模块100照射的光对配置在发光模块100周边的照相机等光学元件的影响，优选例如包含含有光反射部件、光吸收部件等填料的树脂材料等而构成。The lens support part 4 may be a light-shielding member. For example, when the light-emitting module 100 is used as a flash and is mounted on a smartphone together with a camera, in order to reduce the impact of light irradiated from the light-emitting module 100 on optical elements such as cameras arranged around the light-emitting module 100, it is preferable to include, for example, It is composed of filler resin materials such as light reflective members and light absorbing members.
透镜2和透镜支承部4可以利用双色成型加工法等一体形成。通过使用双色成型加工法，能够一体地形成具有透光性的透镜2和具有遮光性的透镜支承部4。The lens 2 and the lens support portion 4 can be integrally formed by a two-color molding process or the like. By using the two-color molding process, the lens 2 having light transmission properties and the lens support portion 4 having light shielding properties can be formed integrally.
透镜支承部4通过使透镜2的外侧面与透镜支承部4的圆筒的内侧面连接来支承透镜2。此外，透镜支承部4通过使用粘接部件等将盖部件3的下表面固定在圆筒的上表面(+Z侧的面)，来支承盖部件3。The lens support part 4 supports the lens 2 by connecting the outer side surface of the lens 2 to the inner side surface of the cylinder of the lens support part 4. In addition, the lens support part 4 supports the cover member 3 by fixing the lower surface of the cover member 3 to the upper surface (the surface on the +Z side) of the cylinder using an adhesive member or the like.
<光源1的结构示例><Structure example of light source 1>
参照图3和图4详细说明发光模块100中的光源1的结构。图3是表示光源1的结构的一个示例的示意性俯视图。图4是图3中IV-IV线的示意性剖面图。The structure of the light source 1 in the light emitting module 100 will be described in detail with reference to Fig. 3 and Fig. 4. Fig. 3 is a schematic top view showing an example of the structure of the light source 1. Fig. 4 is a schematic cross-sectional view taken along line IV-IV in Fig. 3.
(光源1)(Light Source 1)
如图3所示，光源1具备分别包含发光面11的多个发光部10。多个发光部10分别从发光面11向设置在光源1的+Z侧的透镜2发出光。发光面11是指发光部10的主要的光取出面。发光部10包括LED。发光部10发出的光优选为白色光，但也可以具有蓝色等特定的波长。可以根据发光模块100的使用用途适当选择发光部10发出的光的波长或色度。注意，发光部10也可以包括LD(激光二极管)。As shown in FIG3 , the light source 1 includes a plurality of light emitting units 10 each including a light emitting surface 11. The plurality of light emitting units 10 emit light from the light emitting surface 11 to a lens 2 disposed on the +Z side of the light source 1. The light emitting surface 11 refers to a main light extraction surface of the light emitting unit 10. The light emitting unit 10 includes an LED. The light emitted by the light emitting unit 10 is preferably white light, but may also have a specific wavelength such as blue. The wavelength or chromaticity of the light emitted by the light emitting unit 10 may be appropriately selected according to the intended use of the light emitting module 100. Note that the light emitting unit 10 may also include an LD (laser diode).
如图3所示，光源1也可以在俯视时以纵向或横向、或矩阵状配置多个发光部10。在本实施方式中，具备发光部10-1、10-2、10-3、10-4、10-5、10-6、10-7、10-8以及10-9这九个发光部10。九个发光部10对应于多个发光部。多个发光部10沿X方向配置，或者沿X方向以及与X方向正交的Y方向配置。在图3中，沿着X方向和Y方向设置九个发光部10。As shown in FIG. 3 , the light source 1 may have a plurality of light emitting units 10 arranged vertically or horizontally or in a matrix when viewed from above. In this embodiment, nine light-emitting parts 10 are provided: 10-1, 10-2, 10-3, 10-4, 10-5, 10-6, 10-7, 10-8, and 10-9. . The nine light-emitting parts 10 correspond to the plurality of light-emitting parts. The plurality of light emitting units 10 are arranged along the X direction, or along the X direction and the Y direction orthogonal to the X direction. In FIG. 3 , nine light emitting parts 10 are provided along the X direction and the Y direction.
九个发光部10包含九个发光面11。即，发光部10-1包含发光面11-1，发光部10-2包含发光面11-2，发光部10-3包含发光面11-3，发光部10-4包含发光面11-4，发光部10-5包含发光面11-5。此外，发光部10-6包含发光面11-6，发光部10-7包含发光面11-7，发光部10-8包含发光面11-8，发光部10-9包含发光面11-9。从发光面11-1到发光面11-9优选在俯视时配置在透镜2的内侧(比透镜2的外形靠内侧)，更优选配置在比有效部21靠内侧处。注意，由于在俯视时发光部10与发光面11重叠，所以在图3中一并记载了发光部10的符号和发光面11的符号。以下，在两个以上的部分大致一致或重叠的情况下，有时也一并记载符号。The nine light-emitting parts 10 include nine light-emitting surfaces 11 . That is, the light-emitting part 10-1 includes the light-emitting surface 11-1, the light-emitting part 10-2 includes the light-emitting surface 11-2, the light-emitting part 10-3 includes the light-emitting surface 11-3, and the light-emitting part 10-4 includes the light-emitting surface 11-4. The light-emitting part 10-5 includes a light-emitting surface 11-5. In addition, the light-emitting part 10-6 includes a light-emitting surface 11-6, the light-emitting part 10-7 includes a light-emitting surface 11-7, the light-emitting part 10-8 includes a light-emitting surface 11-8, and the light-emitting part 10-9 includes a light-emitting surface 11-9. The distance from the light-emitting surface 11 - 1 to the light-emitting surface 11 - 9 is preferably arranged inside the lens 2 (inside the outer shape of the lens 2 ) in a plan view, and is more preferably arranged inside the effective portion 21 . Note that since the light-emitting part 10 and the light-emitting surface 11 overlap in a plan view, the symbols of the light-emitting part 10 and the light-emitting surface 11 are both shown in FIG. 3 . Hereinafter, when two or more parts substantially match or overlap, the symbols may be described together.
宽度Wx表示发光面11沿X方向的宽度。宽度Wy表示发光面11沿Y方向的宽度。宽度Wx和宽度Wy例如为50μm以上2000μm以下，优选为200μm以上1000μm以下。宽度Wx和宽度Wy可以大致相等，但也可以不同。在本实施方式中，相邻的发光部10的发光面11彼此在俯视时隔开规定间隔配置。X方向上的第一发光面间隔dx和Y方向上的第二发光面间隔dy分别对应于规定间隔。从发光模块100的发光特性的观点来看，第一发光面间隔dx和第二发光面间隔dy越窄越好。但是，能够安装多个发光部10彼此的间隔存在限制。为了同时实现获得良好的发光特性和能够安装多个发光部10彼此的间隔，优选第一发光面间隔dx和第二发光面间隔dy均为50μm以上200μm以下。The width Wx represents the width of the light-emitting surface 11 in the X direction. The width Wy represents the width of the light-emitting surface 11 in the Y direction. The width Wx and the width Wy are, for example, 50 μm or more and 2000 μm or less, preferably 200 μm or more and 1000 μm or less. The width Wx and the width Wy can be approximately equal, but can also be different. In this embodiment, the light-emitting surfaces 11 of adjacent light-emitting units 10 are arranged at a predetermined distance from each other in plan view. The first light-emitting surface interval dx in the X direction and the second light-emitting surface interval dy in the Y direction respectively correspond to predetermined intervals. From the viewpoint of the light-emitting characteristics of the light-emitting module 100, the narrower the first light-emitting surface interval dx and the second light-emitting surface interval dy, the better. However, there is a limit to the distance at which the plurality of light emitting units 10 can be installed. In order to achieve both good light-emitting characteristics and a distance between which a plurality of light-emitting parts 10 can be mounted, it is preferable that both the first light-emitting surface distance dx and the second light-emitting surface distance dy are 50 μm or more and 200 μm or less.
(发光部10)(Light-emitting part 10)
如图4所示，发光部10-1以+Z侧的面作为发光面11-1、以与发光面11-1相反侧的面作为安装面，配置在第一安装基板5的+Z侧的面上。发光部10-1包括发光元件12、设置在发光元件12的+Z侧的面上的波长转换部件14、以及遮光部件15，该遮光部件15覆盖发光元件12的侧面和波长转换部件14的侧面(波长转换部件14的+Z侧的面除外)。换言之，发光元件12的侧面和波长转换部件14的侧面分别由遮光部件15覆盖。根据该结构，由于减少了从发光元件12的侧面和波长转换部件14的侧面漏出的光，所以能够将来自光源1的光照射到所期望的区域。As shown in FIG. 4 , the light-emitting part 10-1 is arranged on the +Z side of the first mounting substrate 5 with the surface on the +Z side as the light-emitting surface 11-1 and the surface opposite to the light-emitting surface 11-1 as the mounting surface. on the face. The light-emitting part 10-1 includes the light-emitting element 12, the wavelength conversion member 14 provided on the +Z side surface of the light-emitting element 12, and the light-shielding member 15 covering the side surfaces of the light-emitting element 12 and the wavelength conversion member 14. (Except the +Z side surface of the wavelength conversion member 14). In other words, the side surfaces of the light-emitting element 12 and the side surfaces of the wavelength converting member 14 are each covered with the light-shielding member 15 . According to this structure, since the light leaking from the side surfaces of the light-emitting element 12 and the wavelength conversion member 14 is reduced, the light from the light source 1 can be irradiated to a desired area.
遮光部件15设置在光源1所包含的多个发光部10中相邻的发光部10彼此之间，一体地保持多个发光元件12和多个波长转换部件14。根据该结构，能够统一安装多个发光部10、或缩小各发光部10彼此之间的间隔。The light-shielding member 15 is provided between adjacent light-emitting units 10 among the plurality of light-emitting units 10 included in the light source 1 and integrally holds the plurality of light-emitting elements 12 and the plurality of wavelength converting members 14 . According to this structure, a plurality of light-emitting units 10 can be mounted together or the distance between the light-emitting units 10 can be reduced.
优选在发光元件12的与发光面11-1相反侧的面上至少设置正负一对电极13(例如p侧电极和n侧电极)。在本实施方式中，发光面11-1的俯视时的外形形状为大致矩形。但是，发光面11-1的俯视时的外形形状可以是大致圆形或大致椭圆形，也可以是大致三角形或大致六边形等多边形。It is preferable to provide at least a pair of positive and negative electrodes 13 (for example, a p-side electrode and an n-side electrode) on the surface of the light-emitting element 12 opposite to the light-emitting surface 11-1. In this embodiment, the outer shape of the light-emitting surface 11-1 in plan view is substantially rectangular. However, the outer shape of the light-emitting surface 11 - 1 in plan view may be substantially circular or substantially elliptical, or may be substantially triangular, substantially hexagonal, or other polygonal shape.
发光元件12优选由III-V族化合物半导体、II-VI族化合物半导体等各种半导体构成。作为半导体，优选使用InXAlYGa1-X-YN(0≤X，0≤Y，X+Y≤1)等氮化物系半导体，也可以使用InN、AlN、GaN、InGaN、AlGaN、InGaAlN等。发光元件12例如是LED、LD。从发光效率和波长转换物质的激发等观点来看，发光元件12的发光峰值波长优选为400nm以上530nm以下，更优选为420nm以上490nm以下，进一步更优选为450nm以上475nm以下。The light-emitting element 12 is preferably composed of various semiconductors such as III-V compound semiconductors and II-VI compound semiconductors. As the semiconductor, it is preferable to use a nitride-based semiconductor such as InX AlY Ga1-XY N (0≤X, 0≤Y, . The light emitting element 12 is, for example, an LED or an LD. From the viewpoints of luminous efficiency and excitation of the wavelength converting material, the peak emission wavelength of the light-emitting element 12 is preferably 400 nm to 530 nm, more preferably 420 nm to 490 nm, and even more preferably 450 nm to 475 nm.
波长转换部件14是在俯视时具有例如大致矩形的外形形状的部件。波长转换部件14被设置成覆盖发光元件12的上表面。波长转换部件14可以使用透光性的树脂材料、陶瓷、玻璃等无机物形成。作为树脂材料，可以使用硅酮树脂、硅酮改性树脂、环氧树脂、环氧改性树脂、酚醛树脂等热固性树脂。特别优选耐光性、耐热性优异的硅酮树脂或其改性树脂。注意，这里的透光性优选为透过来自发光元件12的光的60％以上。此外，波长转换部件14可以使用聚碳酸酯树脂、丙烯酸树脂、甲基戊烯树脂、聚降冰片烯树脂等热塑性树脂。此外，波长转换部件14可以在上述树脂中包含扩散物质或对来自发光元件12的光的至少一部分进行波长转换的波长转换物质。例如，波长转换部件14可以是在树脂材料、陶瓷、玻璃等中含有波长转换物质的部件、波长转换物质的烧结体等。此外，波长转换部件14也可以是在树脂、陶瓷、玻璃等成型体的±Z侧的面上配置了含有波长转换物质或扩散物质的树脂层而成的多层部件。The wavelength conversion member 14 is a member having, for example, a substantially rectangular outer shape in plan view. The wavelength converting member 14 is provided so as to cover the upper surface of the light emitting element 12 . The wavelength conversion member 14 can be formed using inorganic materials such as translucent resin materials, ceramics, and glass. As the resin material, thermosetting resins such as silicone resin, silicone modified resin, epoxy resin, epoxy modified resin, and phenolic resin can be used. Silicone resins or modified resins thereof that are excellent in light resistance and heat resistance are particularly preferred. Note that the light transmittance here preferably transmits 60% or more of the light from the light-emitting element 12 . In addition, the wavelength conversion member 14 may use thermoplastic resin such as polycarbonate resin, acrylic resin, methylpentene resin, and polynorbornene resin. In addition, the wavelength conversion member 14 may contain a diffusion substance or a wavelength conversion substance that converts the wavelength of at least part of the light from the light-emitting element 12 in the above-mentioned resin. For example, the wavelength conversion member 14 may be a member containing a wavelength conversion substance in a resin material, ceramics, glass, or the like, or a sintered body of the wavelength conversion substance. In addition, the wavelength conversion member 14 may be a multilayer member in which a resin layer containing a wavelength conversion substance or a diffusion substance is disposed on the surface of the ±Z side of a molded body such as resin, ceramic, or glass.
作为波长转换部件14所包含的波长转换物质，例如可以包括钇铝石榴石系荧光体(例如，(Y,Gd)3(Al,Ga)5O12:Ce)、碲铝石榴石系荧光体(例如，Lu3(Al,Ga)5O12:Ce)、碲铝石榴石系荧光体(例如，Tb3(Al,Ga)5O12:Ce)、CCA系荧光体(例如，Ca10(PO4)6Cl2:Eu)、SAE系荧光体(例如，Sr4Al14O25:Eu)、氯硅酸盐系荧光体(例如，Ca8MgSi4O16Cl2:Eu)、硅酸盐系荧光体(例如(Ba,Sr,Ca,Mg)2SiO4:Eu)、β塞隆系荧光体(例如(Si,Al)3(O,N)4:Eu)或α塞隆系荧光体(例如，Ca(Si,Al)12(O,N)16:Eu)等氧氮化物系荧光体、LSN系荧光体(例如(La,Y)3Si6N11:Ce)、BSESN系荧光体(例如，(Ba,Sr)2Si5N8:Eu)、SLA系荧光体(例如，SrLiAl3N4:Eu)、CASN系荧光体(例如，CaAlSiN3:Eu)或SCASN系荧光体(例如，(Sr,Ca)AlSiN3:Eu)等氮化物系荧光体、KSF系荧光体(例如，K2SiF6:Mn)、KSAF系荧光体(例如，K2(Si1-xAlx)F6-x:Mn，其中，x满足0<x<1。)或MGF系荧光体(例如，3.5MgO·0.5MgF2·GeO2:Mn)等氟化物系荧光体、具有钙钛矿结构的量子点(例如，The wavelength conversion material included in the wavelength conversion member 14 may include, for example, yttrium aluminum garnet phosphors (e.g., (Y, Gd)3 (Al, Ga)5 O12 :Ce), tellurium aluminum garnet phosphors (e.g., Lu3 (Al, Ga)5 O12 :Ce), tellurium aluminum garnet phosphors (e.g., Tb3 (Al, Ga)5 O12 :Ce), CCA phosphors (e.g., Ca10 (PO4 )6 Cl2 :Eu), SAE phosphors (e.g., Sr4 Al14 O25 :Eu), chlorosilicate phosphors (e.g., Ca8 MgSi4 O16 Cl2 :Eu), silicate phosphors (e.g., (Ba, Sr, Ca, Mg)2 SiO4 :Eu), β-sialon phosphors (e.g., (Si, Al)3 (O, N)4 :Eu) or α-sialon phosphors (e.g., Ca(Si,Al)12 (O,N)16 :Eu), oxynitride phosphors, LSN phosphors (e.g., (La,Y)3 Si6 N11 :Ce), BSESN phosphors (e.g., (Ba,Sr)2 Si5 N8 :Eu), SLA phosphors (e.g., SrLiAl3 N4 :Eu), CASN phosphors (e.g., CaAlSiN3 :Eu) or SCASN phosphors (e.g., (Sr,Ca)AlSiN3 :Eu), nitride phosphors, KSF phosphors (e.g., K2 SiF6 :Mn), KSAF phosphors (e.g., K2 (Si1-x Alx )F6-x :Mn, wherein x satisfies 0<x<1. ) or fluoride-based phosphors such as MGF-based phosphors (e.g., 3.5MgO·0.5MgF2 ·GeO2 :Mn), quantum dots having a perovskite structure (e.g.,
(Cs,FA,MA)(Pb,Sn)(F,Cl,Br,I)3，其中，FA和MA分别表示甲脒鎓和甲基铵。)、II-VI族量子点(例如，CdSe)、III-V族量子点(例如，InP)、或具有黄铜矿结构的量子点(例如，(Ag,Cu)(In,Ga)(S,Se)2)等。上述波长转换材料是粒子。此外，可以是单独使用这些波长转换物质中的一种，或者组合使用这些波长转换物质中的两种以上。(Cs,FA,MA)(Pb,Sn)(F,Cl,Br,I)3 , where FA and MA represent formamidinium and methylammonium respectively. ), group II-VI quantum dots (e.g., CdSe), group III-V quantum dots (e.g., InP), or quantum dots with a chalcopyrite structure (e.g., (Ag,Cu)(In,Ga)(S ,Se)2 ) etc. The above-mentioned wavelength conversion materials are particles. In addition, one of these wavelength converting substances may be used alone, or two or more of these wavelength converting substances may be used in combination.
在实施方式中，发光模块100作为发光元件12使用蓝色发光元件，波长转换部件14包含将从发光元件12射出的光波长转换为黄色的波长转换物质，从而发出白色光。作为波长转换部件14中包含的扩散物质，例如可以使用氧化钛、钛酸钡、氧化铝、氧化硅等。In the embodiment, the light-emitting module 100 uses a blue light-emitting element as the light-emitting element 12, and the wavelength conversion member 14 contains a wavelength conversion substance that converts the wavelength of light emitted from the light-emitting element 12 into yellow, thereby emitting white light. As the diffusion material contained in the wavelength conversion member 14, for example, titanium oxide, barium titanate, aluminum oxide, silicon oxide, etc. can be used.
遮光部件15是覆盖发光元件12和波长转换部件14的侧面的部件。遮光构件15直接或间接地覆盖发光元件12和波长转换构件14的侧面。波长转换部件14的上表面从遮光部件15露出，是发光部10-1的发光面11-1。遮光部件15也可以在多个发光部10中相邻的发光部彼此之间分离。为了提高光取出效率，遮光部件15优选由光反射率高的部件构成。遮光部件15可以使用例如含有白色颜料等光反射性物质的树脂材料。The light-shielding member 15 covers the side surfaces of the light-emitting element 12 and the wavelength conversion member 14 . The light-shielding member 15 directly or indirectly covers the side surfaces of the light-emitting element 12 and the wavelength conversion member 14 . The upper surface of the wavelength conversion member 14 is exposed from the light shielding member 15 and serves as the light-emitting surface 11-1 of the light-emitting part 10-1. The light-shielding member 15 may be separated between adjacent light-emitting parts among the plurality of light-emitting parts 10 . In order to improve the light extraction efficiency, the light shielding member 15 is preferably made of a member with high light reflectivity. For example, a resin material containing a light-reflective substance such as white pigment can be used as the light-shielding member 15 .
作为光反射性物质，可以举出氧化钛、氧化锌、氧化镁、碳酸镁、氢氧化镁、碳酸钙、氢氧化钙、硅酸钙、硅酸镁、钛酸钡、硫酸钡、氢氧化铝、氧化铝、氧化锆、氧化硅等，优选单独使用这些物质中的一种或组合使用这些物质中的两种以上。此外，作为树脂材料，优选将以环氧树脂、环氧改性树脂、硅酮树脂、硅酮改性树脂、酚醛树脂等热固性树脂为主成分的树脂材料作为母材。注意，遮光部件15也可以根据需要由对可见光具有透光性的部件构成。Examples of light-reflective substances include titanium oxide, zinc oxide, magnesium oxide, magnesium carbonate, magnesium hydroxide, calcium carbonate, calcium hydroxide, calcium silicate, magnesium silicate, barium titanate, barium sulfate, and aluminum hydroxide. , alumina, zirconia, silicon oxide, etc., it is preferred to use one of these substances alone or use two or more of these substances in combination. In addition, as the resin material, a base material is preferably a resin material whose main component is a thermosetting resin such as epoxy resin, epoxy modified resin, silicone resin, silicone modified resin, or phenolic resin. Note that the light shielding member 15 may be composed of a member that is translucent to visible light as necessary.
发光部10与第一安装基板5所具备的布线51电连接。第一安装基板5优选具备配置在其表面的布线51。第一安装基板5也可以在其内部具备布线51。发光部10与第一安装基板5通过经由导电性粘接部件52连接第一安装基板5的布线51与发光部10的至少正负一对电极13而电连接。注意，第一安装基板5的布线51根据发光部10的电极13的结构、大小来设定结构、大小等。The light emitting unit 10 is electrically connected to the wiring 51 provided on the first mounting substrate 5 . The first mounting substrate 5 preferably includes wiring 51 arranged on its surface. The first mounting substrate 5 may include wiring 51 inside the first mounting substrate 5 . The light emitting part 10 and the first mounting substrate 5 are electrically connected by connecting the wiring 51 of the first mounting substrate 5 and at least a pair of positive and negative electrodes 13 of the light emitting part 10 via a conductive adhesive member 52 . Note that the structure, size, etc. of the wiring 51 of the first mounting substrate 5 are set according to the structure and size of the electrode 13 of the light emitting part 10 .
第一安装基板5优选使用绝缘性材料作为母材，并且优选使用难以透射从发光部10发出的光或外部光等的材料，优选使用具有一定强度的材料。具体而言，第一安装基板5可以以氧化铝、氮化铝、莫来石、氮化硅等陶瓷、酚醛树脂、环氧树脂、聚酰亚胺树脂、BT树脂(bismaleimide triazine resin：双马来酰亚胺三嗪树脂)、聚邻苯二甲酰胺、聚酯树脂等树脂为母材来构成。The first mounting substrate 5 preferably uses an insulating material as a base material, a material that is difficult to transmit light emitted from the light emitting section 10 or external light, and a material that has a certain strength. Specifically, the first mounting substrate 5 can be made of ceramics such as aluminum oxide, aluminum nitride, mullite, silicon nitride, phenolic resin, epoxy resin, polyimide resin, BT resin (bismaleimide triazine resin: Shuangma It is composed of resins such as imide triazine resin), polyphthalamide, and polyester resin as base materials.
布线51可以由铜、铁、镍、钨、铬、铝、银、金、钛、钯、铑或它们的合金等的至少一种构成。此外，从导电性粘接部件52的润湿性和/或光反射性等观点来看，也可以在布线51的表层设置银、铂、铝、铑、金或它们的合金等的层。The wiring 51 may be made of at least one of copper, iron, nickel, tungsten, chromium, aluminum, silver, gold, titanium, palladium, rhodium or alloys thereof. In addition, from the viewpoint of wettability and/or light reflectivity of the conductive adhesive member 52 , a layer of silver, platinum, aluminum, rhodium, gold, or alloys thereof may be provided on the surface layer of the wiring 51 .
<盖部件3的主要作用><Main functions of cover member 3>
图5和图6是说明发光模块100中的盖部件3的作用的图。图5和图6与图2A同样地示意性地表示图1的II-II线的发光模块100的剖面。5 and 6 are diagrams illustrating the function of the cover member 3 in the light emitting module 100. FIGS. 5 and 6 schematically show a cross-section of the light-emitting module 100 taken along line II-II in FIG. 1 , similarly to FIG. 2A .
在图5中，实线所示的光L1表示从光源1发出并在透过透镜2的有效部21的中央附近之后透过盖部件3的第三区域33的光。虚线所示的光L2表示从光源1发出并在透过透镜2的有效部21的外缘附近之后透过盖部件3的第二区域32的光。5 , the light L1 indicated by the solid line represents light emitted from the light source 1 and transmitted through the vicinity of the center of the effective portion 21 of the lens 2 and then transmitted through the third region 33 of the cover member 3. The light L2 indicated by the dotted line represents light emitted from the light source 1 and transmitted through the vicinity of the outer edge of the effective portion 21 of the lens 2 and then transmitted through the second region 32 of the cover member 3.
如图5所示，由于光L2被第二区域32扩散，所以因透过透镜2的有效部21的外缘附近或透镜部22的光而容易产生的杂散光减少。由此，能够减少来自发光模块100的照射光中所包含的杂散光，因此，发光模块100能够在向所期望的区域照射光的同时，减少向所期望的区域以外的区域照射的光。此外，通过以在俯视时与透镜部22重叠的方式设置第二区域32，难以从发光模块100的外部视觉辨认透镜部22的菲涅耳形状等。由此，能够提高发光模块100的外观美感。As shown in FIG. 5 , since the light L2 is diffused in the second area 32 , stray light that is easily generated due to light passing through the vicinity of the outer edge of the effective portion 21 of the lens 2 or the lens portion 22 is reduced. This can reduce stray light included in the irradiation light from the light-emitting module 100. Therefore, the light-emitting module 100 can irradiate light to a desired area while reducing light irradiating areas other than the desired area. In addition, by providing the second region 32 so as to overlap the lens portion 22 in a plan view, it is difficult to visually recognize the Fresnel shape of the lens portion 22 and the like from outside the light-emitting module 100 . As a result, the aesthetic appearance of the light emitting module 100 can be improved.
在图3和图6中，将透镜2的焦距设为f，将沿透镜2的光轴20的方向上从透镜2的焦点F到盖部件3的上表面的最短距离设为d，将沿发光面11的方向上从发光区域16的中心C到发光区域16的外缘G的最长距离设为D。在本实施方式中，以3×3的矩阵状配置九个发光部10，发光区域16为大致正方形，因此最长距离D是从中央(第二行第二列)的发光部10的中心C到发光区域16的外缘G中的正方形的角部的距离。沿着发光面11的方向上第三区域33的最大宽度W可以由下式表示：In FIGS. 3 and 6 , let the focal length of the lens 2 be f, let the shortest distance from the focal point F of the lens 2 to the upper surface of the cover member 3 in the direction along the optical axis 20 of the lens 2 be d, and let Let D be the longest distance in the direction of the light-emitting surface 11 from the center C of the light-emitting area 16 to the outer edge G of the light-emitting area 16 . In this embodiment, nine light-emitting units 10 are arranged in a 3×3 matrix, and the light-emitting area 16 is substantially square. Therefore, the longest distance D is from the center C of the light-emitting unit 10 in the center (second row and second column). The distance to the corner of the square in the outer edge G of the light-emitting area 16 . The maximum width W of the third region 33 in the direction along the light-emitting surface 11 can be expressed by the following formula:
W≥2×D×d/f。W≥2×D×d/f.
根据上述结构，因透过透镜2的透镜部22或有效部21的外缘附近的光而容易产生的杂散光，通过第二区域32的光扩散作用而减少。由此，能够减少来自发光模块100的照射光中包含的杂散光，因此，发光模块100能够在向所期望的区域照射光的同时，减少向所期望的区域以外的区域照射的光。此外，由于从光源1发出并透过了透镜2的有效部21的光L1透过盖部件3的第一区域31的内侧，特别是透过第三区域33，因此，能够减少盖部件3中的光扩散，向所期望的区域照射光。According to the above structure, stray light that is easily generated due to light passing through the lens portion 22 or the outer edge vicinity of the effective portion 21 of the lens 2 is reduced by the light diffusion effect of the second area 32 . This can reduce stray light included in the irradiation light from the light-emitting module 100. Therefore, the light-emitting module 100 can irradiate light to a desired area while reducing light irradiating areas other than the desired area. In addition, since the light L1 emitted from the light source 1 and transmitted through the effective portion 21 of the lens 2 is transmitted through the inside of the first area 31 of the cover member 3 and particularly through the third area 33, it is possible to reduce the amount of light L1 in the cover member 3. The light is diffused to illuminate the desired area.
<实施例、参考例><Examples, Reference Examples>
以下，将说明实施方式和参考例，但是本发明不限于这些示例。Hereinafter, embodiments and reference examples will be described, but the present invention is not limited to these examples.
图7A是表示实施例和参考例的发光模块的照度分布的模拟结果的图。模拟分析使用Synopsys公司制造的照明设计软件LightTools进行。在图7A中，例1和例2是实施例，例3和例4是参考例。下面说明例1至例4的发光模块的主要结构。FIG. 7A is a diagram showing the simulation results of the illuminance distribution of the light-emitting modules of the embodiment and the reference example. Simulation analysis was performed using LightTools, a lighting design software manufactured by Synopsys. In FIG. 7A , Examples 1 and 2 are examples, and Examples 3 and 4 are reference examples. The main structures of the light-emitting modules of Examples 1 to 4 are described below.
(例1)(example 1)
·发光部10的数量：九个(3×3的矩阵配置)·Number of light-emitting parts 10: nine (3×3 matrix arrangement)
·透镜2的有效部21的形状：凸透镜·Shape of effective portion 21 of lens 2: convex lens
·透镜2材质：聚碳酸酯树脂·Lens 2 material: polycarbonate resin
·透镜支承部4的材质：聚碳酸酯树脂·Material of lens support part 4: polycarbonate resin
·透镜支承部4的颜色：白色·Color of lens support part 4: white
·盖部件3的材质：玻璃Material of cover part 3: Glass
·盖部件3的表面：在第二区域32中，盖部件3的下表面是粗糙面，在第一区域31和第三区域33中，盖部件3的两表面不是粗糙面而是平坦面。Surface of the cover member 3: In the second region 32, the lower surface of the cover member 3 is a rough surface, and in the first region 31 and the third region 33, both surfaces of the cover member 3 are not rough surfaces but flat surfaces.
(例2)(Example 2)
除了透镜支承部4的颜色为黑色这一点以外，与例1相同。It is the same as Example 1 except that the color of the lens support part 4 is black.
(例3)(Example 3)
盖部件的材质为聚碳酸酯树脂，在盖部件的上表面的整个面上施加用于保护表面不受损伤或污垢的硬涂层，在盖部件的整个下表面上施加粗糙面，这一点与例1不同。注意，在硬涂层中含有二氧化硅，实施了硬涂层的表面与非粗糙面的平坦面相比，光扩散性变高。The cover member is made of polycarbonate resin, and a hard coating layer is applied to the entire upper surface of the cover member to protect the surface from damage or dirt, and a roughened surface is applied to the entire lower surface of the cover member. Example 1 is different. Note that the hard coat layer contains silica, and the surface on which the hard coat layer is applied has higher light diffusivity than a flat surface that is not a rough surface.
(例4)(Example 4)
除了盖部件的上表面和下表面的整个面不是粗糙面而是平坦面这一点以外，与例1相同。It is the same as Example 1 except that the entire upper surface and lower surface of the cover member are not rough surfaces but are flat surfaces.
图7A示出了，在例1至例4中的每一个中，对于四种发光图案中的每一个，在照射面60上获得的照度分布。注意，在图7A中，朝向+Z方向观察照射面60。在例1至例4的各照度分布中，包含照射光61和杂散光62。照射光61是源自从发光部发出并透过透镜的有效部的中央附近的光而在照射面60上获得的光。照射光61对应于照射到所期望的区域的光。杂散光62是源自透过透镜的有效部的外缘附近或透镜部的光而在照射面60上获得的光。杂散光62对应于照射到所期望区域以外的区域的光。杂散光62的照度越高(换言之，杂散光62越多)，照射光61的照度就越低。即，杂散光62的照度越高，照射光61的外缘越不清晰。FIG. 7A shows the illuminance distribution obtained on the irradiation surface 60 for each of the four light emission patterns in each of Examples 1 to 4. Note that in FIG. 7A , the irradiation surface 60 is viewed in the +Z direction. Each illumination distribution in Examples 1 to 4 includes irradiation light 61 and stray light 62 . The irradiation light 61 is light obtained on the irradiation surface 60 from the light emitted from the light-emitting part and transmitted through the vicinity of the center of the effective part of the lens. The irradiation light 61 corresponds to the light irradiating a desired area. Stray light 62 is light obtained on the irradiation surface 60 originating from light that has passed through the vicinity of the outer edge of the effective portion of the lens or the lens portion. Stray light 62 corresponds to light irradiating an area other than the desired area. The higher the illuminance of stray light 62 (in other words, the more stray light 62 is), the lower the illuminance of irradiation light 61 is. That is, the higher the illumination intensity of the stray light 62 is, the less clear the outer edge of the irradiation light 61 is.
发光图案有四种：“Center”、“Side”、“Top/Bottom”和“Corner”。“Center”是仅使配置在3×3的矩阵中的九个发光部中位于中央(第二行第二列)的一个发光部发光的发光图案。“Side”是仅使配置在3×3的矩阵中的九个发光部中位于第二行第一列和第二行第三列的两个发光部发光的发光图案。There are four luminous patterns: "Center", "Side", "Top/Bottom" and "Corner". “Center” is a light-emitting pattern in which only one light-emitting part located in the center (second row and second column) among nine light-emitting parts arranged in a 3×3 matrix emits light. “Side” is a light-emitting pattern in which only two light-emitting parts located in the second row, first column and second row, third column among nine light-emitting parts arranged in a 3×3 matrix emit light.
“Top/Bottom”是仅使配置在3×3的矩阵中的九个发光部中位于第一行第二列和第三行第二列的两个发光部发光的发光图案。“Corner”是仅使配置在3×3的矩阵中的九个发光部中四角的(位于第一行第一列、第一行第三列、第三行第一列和第三行第三列)发光部发光的发光图案。图7A中的发光图案71～74表示光源的示意性俯视图。发光图案71对应于“Center”，发光图案72对应于“Side”，发光图案73对应于“Top/Bottom”，发光图案74对应于“Corner”。照射面60中，在以透镜的光轴上的点为中心而与发光图案中发光部的位置相反的一侧的位置，获得照射光61。"Top/Bottom" is a light-emitting pattern that makes only the two light-emitting parts located in the first row and the second column and the third row and the second column of the nine light-emitting parts arranged in the 3×3 matrix emit light. "Corner" is a light-emitting pattern that makes only the light-emitting parts at the four corners (located in the first row and the first column, the first row and the third column, the third row and the first column, and the third row and the third column) of the nine light-emitting parts arranged in the 3×3 matrix emit light. The light-emitting patterns 71 to 74 in Figure 7A are schematic top views of the light sources. The light-emitting pattern 71 corresponds to "Center", the light-emitting pattern 72 corresponds to "Side", the light-emitting pattern 73 corresponds to "Top/Bottom", and the light-emitting pattern 74 corresponds to "Corner". In the irradiation surface 60, the irradiation light 61 is obtained at a position on the side opposite to the position of the light-emitting part in the irradiation pattern, centered on the point on the optical axis of the lens.
如图7A所示，在例1和例2中，通过使来自光源1的光透过盖部件3的第三区域33而在照射面60获得根据发光图案进行了部分照射的照射光61。另一方面，在例3中，由于来自光源的各个发光部的光在盖部件的硬涂层中扩散而扩展，所以来自光源的各个发光部的光在照射面60中没有分离。其结果，在例3的照射面60中，未获得根据发光图案进行了部分照射的照射光61。As shown in FIG. 7A , in Examples 1 and 2, the light from the light source 1 is transmitted through the third region 33 of the cover member 3 to obtain the irradiation light 61 partially irradiated according to the light emission pattern on the irradiation surface 60 . On the other hand, in Example 3, since the light from each light-emitting part of the light source is diffused and spread in the hard coat layer of the cover member, the light from each light-emitting part of the light source is not separated in the irradiation surface 60 . As a result, in the irradiation surface 60 of Example 3, the irradiation light 61 partially irradiated according to the light emission pattern was not obtained.
此外，在例1和例2中，由于盖部件3中的第二区域32的光扩散作用，与例4相比，照射光61附近的杂散光62的照度降低。由此，照射光61的外缘与例4相比变得清晰，照射面60中的杂散光减少。Furthermore, in Examples 1 and 2, due to the light diffusion effect of the second region 32 in the cover member 3, compared with Example 4, the illuminance of the stray light 62 near the irradiation light 61 is reduced. As a result, the outer edge of the irradiation light 61 becomes clearer than in Example 4, and stray light in the irradiation surface 60 is reduced.
此外，在例2中，通过使透镜支承部4为黑色来提高透镜支承部4的遮光性，与例1相比，杂散光62进一步减少，照射面60中的杂散光进一步减少。Furthermore, in Example 2, the light-shielding property of the lens support portion 4 is improved by making the lens support portion 4 black. Compared with Example 1, the stray light 62 is further reduced, and the stray light in the irradiation surface 60 is further reduced.
图7B和图7C是表示以“Center”的发光图案使光源发光时的照射面的照度分布的模拟结果的一个示例的图。与上述相同，该模拟结果也是使用Synopsys公司制造的照明设计软件LightTools进行的。7B and 7C are diagrams showing an example of simulation results of the illumination distribution on the irradiation surface when the light source emits light in the "Center" light emission pattern. As above, this simulation result was also performed using LightTools, a lighting design software manufactured by Synopsys.
图7B表示在照射面上距X方向上的照射光的中心的距离为-200mm以上200mm以下的范围内的剖面照度分布。图7C在图7B所示的照射面中，作为距X方向上的照射光的中心的距离为120mm附近的范围，放大显示距X方向上的照射光的中心的距离为50mm以上200mm以下的范围。在照射面中，距X方向上的照射光的中心的距离为120mm的位置是上述例1、2、4中相对的照度差最大的位置。注意，照射面上的照射光的中心与沿着发光面的方向上的发光区域的中心大致一致。在图7B和图7C中，将照射面的剖面中的最大照度设为100％。此外，发光模块的盖部件与照射面的距离为150mm。注意，在图7B和图7C中，例示了X方向上的剖面照度分布，但由于照射光的照度分布在照射面内相对于照射光的中心大致点对称，因此只要是在照射面内通过照射光的中心的剖面，则无论哪个剖面都能获得大致相同的剖面照度分布。FIG. 7B shows the cross-sectional illuminance distribution on the irradiation surface in the range of -200 mm to 200 mm from the center of the irradiation light in the X direction. FIG. 7C shows an enlarged display of a range in which the distance from the center of the irradiation light in the X direction is approximately 120 mm in the irradiation surface shown in FIG. 7B and is 50 mm to 200 mm from the center of the irradiation light in the X direction. . In the irradiation surface, the position 120 mm away from the center of the irradiation light in the X direction is the position where the relative illumination difference is the largest in the above-mentioned Examples 1, 2, and 4. Note that the center of the irradiation light on the irradiation surface substantially coincides with the center of the light-emitting area in the direction along the light-emitting surface. In FIGS. 7B and 7C , the maximum illuminance in the cross section of the irradiation surface is set to 100%. In addition, the distance between the cover member of the light-emitting module and the irradiation surface is 150 mm. Note that in FIGS. 7B and 7C , the cross-sectional illumination distribution in the If the cross section is at the center of the light, roughly the same cross-sectional illumination distribution can be obtained no matter which cross-section is used.
如图7C所示，在照射面中，在距X方向上的照射光的中心的距离为120mm的位置，例1的照度为4％，例2的照度为3％，例4的照度为5％。即，在例1和例2中，发光模块的盖部件与照射面的距离为150mm，将照射面中的发光模块的照射光的最大照度设为100％时，在照射面中，距照射光的中心120mm的距离的照度低于5％。与此相对，例4中的该照度为5％。综上所述，例1和例2中的杂散光的照度比例4中的杂散光的照度减少。As shown in FIG. 7C , in the irradiation surface, at a position 120 mm away from the center of the irradiation light in the X direction, the illuminance of Example 1 is 4%, the illuminance of Example 2 is 3%, and the illuminance of Example 4 is 5 %. That is, in Examples 1 and 2, the distance between the cover member of the light-emitting module and the irradiation surface is 150 mm. When the maximum illuminance of the irradiation light of the light-emitting module in the irradiation surface is 100%, in the irradiation surface, the distance from the irradiation light The illumination at a distance of 120mm from the center is less than 5%. In contrast, the illuminance in Example 4 was 5%. In summary, the illuminance of stray light in Examples 1 and 2 is reduced compared to the illuminance of stray light in Example 4.
如上所述，在例1和例2中，与例3和例4相比，发光模块100能够在减少照射面60中的杂散光的同时向所期望的区域照射光，并且减少向所期望的区域以外的区域照射的光。As described above, in Examples 1 and 2, compared with Examples 3 and 4, the light-emitting module 100 can irradiate light to a desired area while reducing stray light in the irradiation surface 60, and reduce the amount of light radiating to a desired area. Light shining on an area outside the area.
<变形例><Modification>
以下，对实施方式的发光模块的各种变形例进行说明。Various modifications of the light emitting module according to the embodiment will be described below.
(第一变形例)(First modification)
图8是表示第一变形例的发光模块100a的一个示例的示意性剖面图。发光模块100a的俯视图与图1大致相同。图8的示意性剖面图表示与图1的II-II线对应的发光模块100a的剖面图。这一点在以下所示的图11至图13的各剖面图中也同样如此。FIG. 8 is a schematic cross-sectional view showing an example of the light-emitting module 100a according to the first modification. The top view of the light emitting module 100a is substantially the same as that in FIG. 1 . The schematic cross-sectional view of FIG. 8 shows a cross-sectional view of the light emitting module 100a corresponding to line II-II in FIG. 1 . This point is also true in each of the cross-sectional views of FIGS. 11 to 13 shown below.
在本变形例的发光模块100a中，第二区域32中的粗糙面设置在盖部件3a的上表面(+Z侧的面)，这一点与实施方式的发光模块100不同。在这样的发光模块100a中，也能够获得在减少照射面的杂散光的同时向所期望的区域照射光的效果。The light-emitting module 100a of this modified example is different from the light-emitting module 100 of the embodiment in that the rough surface in the second region 32 is provided on the upper surface (+Z side surface) of the cover member 3a. Such a light-emitting module 100a can also achieve the effect of reducing stray light on the irradiation surface and irradiating light to a desired area.
(第二变形例)(Second Modification)
图9和图10是表示第二变形例的发光模块100b的一个示例的图。图9是发光模块100b的示意性俯视图。图10是图9中X-X线的示意性剖面图。在本变形例中，发光模块100b在光出射面上具有不包含菲涅耳形状的透镜2b，这一点与第一变形例的发光模块100a不同。在这样的发光模块100b中，也能够获得在减少照射面的杂散光的同时向所期望的区域照射光的效果。9 and 10 are diagrams showing an example of the light emitting module 100b according to the second modification. FIG. 9 is a schematic top view of the light emitting module 100b. FIG. 10 is a schematic cross-sectional view along the X-X line in FIG. 9 . In this modification, the light emitting module 100b has a lens 2b that does not have a Fresnel shape on the light exit surface, which is different from the light emitting module 100a in the first modification. Such a light-emitting module 100b can also achieve the effect of reducing stray light on the irradiation surface and irradiating light to a desired area.
(第三变形例)(Third modification)
图11是表示第三变形例的发光模块100c的一个示例的示意性剖面图。发光模块100c的俯视图与图9大致相同。图11的示意性剖面图表示与图9的X-X线对应的发光模块100c的剖面图。在本变形例中，发光模块100c是将与图10中的透镜支承部4对应的透镜支承部4c用与透镜2c相同的材料与透镜2c一体地设置的，这一点与第二变形例的发光模块100b的不同。透镜2c例如可以通过利用具有透光性的树脂材料等，将透镜支承部4c与有效部21、透镜部22等一起进行成型加工来形成。因此，透镜支承部4c具有透光性。在这样的发光模块100c中，也能够获得在减少照射面的杂散光的同时向所期望的区域照射光的效果。FIG. 11 is a schematic cross-sectional view showing an example of the light emitting module 100c according to the third modified example. The top view of the light emitting module 100c is substantially the same as that of FIG. 9 . The schematic cross-sectional view of FIG. 11 shows a cross-sectional view of the light-emitting module 100c corresponding to the X-X line in FIG. 9 . In this modification, the light-emitting module 100c is provided with a lens support portion 4c corresponding to the lens support portion 4 in FIG. 10 that is made of the same material as the lens 2c and is integrally provided with the lens 2c. Module 100b is different. The lens 2c can be formed, for example, by molding the lens support portion 4c together with the effective portion 21, the lens portion 22, and the like using a translucent resin material or the like. Therefore, the lens support part 4c has translucency. Such a light-emitting module 100c can also achieve the effect of reducing stray light on the irradiation surface and irradiating light to a desired area.
(第四变形例)(Fourth Modification)
图12A是表示第四变形例的发光模块100d的第一个示例的示意性剖面图。发光模块100d的俯视图与图9大致相同。图12A的示意性剖面图表示与图9的X-X线对应的发光模块100d的剖面图。在本变形例中，发光模块100d具备透镜支承部4d1和透镜支承部4d2，且在透镜支承部4d1的外侧面包含凹部41，这一点与第三变形例的发光模块100c不同。凹部41形成为在圆周方向上围绕透镜支承部4d一周的槽状。FIG12A is a schematic cross-sectional view showing a first example of a light emitting module 100d according to a fourth variant. The top view of the light emitting module 100d is substantially the same as FIG9. The schematic cross-sectional view of FIG12A shows a cross-sectional view of the light emitting module 100d corresponding to the line X-X of FIG9. In this variant, the light emitting module 100d includes a lens support portion 4d1 and a lens support portion 4d2, and the outer side surface of the lens support portion 4d1 includes a recessed portion 41, which is different from the light emitting module 100c according to the third variant. The recessed portion 41 is formed in a groove shape that surrounds the lens support portion 4d in the circumferential direction.
发光模块100d中，在透镜支承部4d2上设置有透镜支承部4d1，透镜部22与透镜支承部4d1成一体。例如，有效部21、透镜部22和透镜支承部4d1可以是相同的材料。发光模块100d可以通过将用于使发光模块100d与智能手机的壳体密接的密接部件嵌入凹部41来安装。密接部件是以天然橡胶、合成橡胶等弹性材料作为原材料形成的环状部件。当在将密接部件安装在凹部41的状态下将发光模块100d固定在智能手机的壳体上时，通过密接部件的密封作用，能够减少粉尘、液体等从发光模块100d与智能手机的壳体之间的间隙进入智能手机内部。In the light emitting module 100d, a lens supporting portion 4d1 is provided on the lens supporting portion 4d2, and the lens portion 22 is integrated with the lens supporting portion 4d1. For example, the effective portion 21, the lens portion 22 and the lens supporting portion 4d1 may be made of the same material. The light emitting module 100d may be installed by embedding a close contact component for making the light emitting module 100d close to the housing of the smartphone into the recess 41. The close contact component is an annular component formed with an elastic material such as natural rubber, synthetic rubber, etc. as a raw material. When the light emitting module 100d is fixed to the housing of the smartphone with the close contact component installed in the recess 41, the sealing effect of the close contact component can reduce the entry of dust, liquid, etc. into the interior of the smartphone from the gap between the light emitting module 100d and the housing of the smartphone.
例如，若由盖部件的下表面和透镜支承部的外侧面来构成凹部，则透镜支承部的上表面与盖部件的下表面之间的接触面积减少。由此，由透镜支承部对盖部件的支承强度有可能降低。For example, if the recessed portion is formed by the lower surface of the cover member and the outer surface of the lens support portion, the contact area between the upper surface of the lens support portion and the lower surface of the cover member decreases. As a result, the support strength of the cover member by the lens support portion may be reduced.
参照图12B更详细地说明由透镜支承部引起的盖部件的支承强度的降低。图12B是表示参考例的发光模块100X的一个示例的示意性剖面图。发光模块100X的俯视图与图9大致相同。图12B的示意性剖面图表示与图9的X-X线对应的发光模块100X的剖面图。注意，为了使发光模块100X与发光模块100d之间的比较容易理解，在图12B中，为了方便起见，对具有与发光模块100c实质上相同的功能的结构部标注与图11中的发光模块100c的结构部相同的符号。The reduction in the support strength of the cover member caused by the lens support portion will be explained in more detail with reference to FIG. 12B . FIG. 12B is a schematic cross-sectional view showing an example of the light emitting module 100X of the reference example. The top view of the light emitting module 100X is substantially the same as that of FIG. 9 . The schematic cross-sectional view of FIG. 12B shows a cross-sectional view of the light emitting module 100X corresponding to the X-X line in FIG. 9 . Note that in order to make the comparison between the light-emitting module 100X and the light-emitting module 100d easier to understand, in FIG. 12B , for convenience, the structural parts having substantially the same functions as the light-emitting module 100c are labeled with the light-emitting module 100c in FIG. 11 The structural parts have the same symbols.
在图12B中，凹部41X是由盖部件3a的下表面30X和透镜支承部4c的外侧面40X形成的凹部。在凹部41X中，透镜支承部4c的厚度变薄，即，透镜支承部4c在X方向上的长度变短。随着X方向上的透镜支承部4c的长度变短，透镜支承部4c的上表面与盖部件3a的下表面之间的接触面积减少，因此透镜支承部4c对盖部件3a的支承强度有可能降低。In FIG. 12B , the recess 41X is a recess formed by the lower surface 30X of the cover member 3a and the outer side surface 40X of the lens support portion 4c. In the recess 41X, the thickness of the lens support portion 4c becomes thinner, that is, the length of the lens support portion 4c in the X direction becomes shorter. As the length of the lens support portion 4c in the X direction becomes shorter, the contact area between the upper surface of the lens support portion 4c and the lower surface of the cover member 3a decreases, so the support strength of the lens support portion 4c for the cover member 3a may decrease.
由于本变形例的发光模块100d具有形成在透镜支承部4d1的外侧面的槽状的凹部41，因此透镜支承部4d1的上表面的面积不会减少。因此，在发光模块100d中，能够提高由透镜支承部对盖部件3a的支承强度，同时保持紧贴部件。Since the light-emitting module 100d of this modification has the groove-shaped recessed portion 41 formed on the outer surface of the lens supporting portion 4d1, the area of the upper surface of the lens supporting portion 4d1 is not reduced. Therefore, in the light-emitting module 100d, the support strength of the cover member 3a by the lens support portion can be improved while maintaining close contact with the member.
注意，上述以外的作用效果与上述实施方式和变形例相同。Note that the effects other than those described above are the same as those of the above-described embodiment and modification examples.
图12C是表示第四变形例的发光模块100d的第二示例的示意性剖面图。在图12C中，发光模块100d在透镜支承部4d1的下表面具有至少一个台阶dS1。在本变形例中，透镜支承部4d1的Z方向上的厚度变小的台阶dS1在俯视时环状地设置在透镜支承部4d1的下表面上。台阶dS1可以设置在透镜支承部4d1的下表面的至少一部分上，也可以设置在透镜支承部4d1的下表面的全部上。台阶的角部dR1可以具有曲率。台阶dS1也可以是例如透镜支承部4d1的Z方向上的厚度变大的形式。FIG. 12C is a schematic cross-sectional view showing a second example of the light emitting module 100d according to the fourth modification. In FIG. 12C , the light emitting module 100d has at least one step dS1 on the lower surface of the lens support part 4d1. In this modification, the step dS1 in which the thickness of the lens support portion 4d1 in the Z direction becomes smaller is provided annularly on the lower surface of the lens support portion 4d1 in plan view. The step dS1 may be provided on at least a part of the lower surface of the lens support part 4d1, or may be provided on the entire lower surface of the lens support part 4d1. The corner dR1 of the step may have a curvature. The step dS1 may, for example, have a larger thickness in the Z direction of the lens support portion 4d1.
此外，发光模块100d也可以在透镜支承部4d1与透镜支承部4d2之间具有至少一个凹凸。透镜支承部4d1与透镜支承部4d2之间也可以是粗糙面。In addition, the light emitting module 100d may have at least one unevenness between the lens support part 4d1 and the lens support part 4d2. A rough surface may be provided between the lens support part 4d1 and the lens support part 4d2.
根据以上的结构，在发光模块100d的第二示例中，能够增加透镜支承部4d1与透镜支承部4d2之间的接触面积，提高透镜支承部4d1与透镜支承部4d2之间的接合强度。除此以外的效果与发光模块100d的第一示例大致相同。According to the above structure, in the second example of the light emitting module 100d, the contact area between the lens support part 4d1 and the lens support part 4d2 can be increased, and the joint strength between the lens support part 4d1 and the lens support part 4d2 can be improved. Other effects are substantially the same as those of the first example of the light emitting module 100d.
图12D是表示第四变形例的发光模块100d的第三示例的示意性剖面图。在图12D中，与盖部件3a接合的部分的透镜支承部4d1的外缘位于比盖部件3a的外缘靠内侧的位置。俯视时，盖部件3a的外缘和与其接合的部分的透镜支承部4d1的外缘的距离m为10μm以上150μm以下，优选为80μm以上120μm以下。通过该结构，在发光模块100d的第三示例中，能够减少粘接部件7沿着盖部件3a的侧面上翘的情况。由此，在经由未固化的粘接部件7将盖部件3a配置在透镜支承部4d1上时，能够减少在俯视时未固化的粘接部件7超出盖部件3a的外缘的外侧直接固化而破坏从+Z侧观察时的发光模块100d的美观的情况。此外，若粘接部件7超出盖部件3a的外缘的外侧，则例如在将发光模块组装到智能手机等的壳体中时，发光模块有可能无法进入壳体的开口。另一方面，在发光模块100d的第三示例中，这可以被防止。除此以外的效果与发光模块100d的第一示例大致相同。FIG. 12D is a schematic cross-sectional view showing a third example of the light emitting module 100d according to the fourth modification. In FIG. 12D , the outer edge of the lens support portion 4d1 of the portion joined to the cover member 3a is located inward of the outer edge of the cover member 3a. In plan view, the distance m between the outer edge of the cover member 3a and the outer edge of the lens support portion 4d1 of the portion joined thereto is 10 μm or more and 150 μm or less, preferably 80 μm or more and 120 μm or less. With this structure, in the third example of the light-emitting module 100d, it is possible to reduce the tendency of the adhesive member 7 to lift up along the side surface of the cover member 3a. Therefore, when the cover member 3a is disposed on the lens support portion 4d1 via the uncured adhesive member 7, it can be reduced that the uncured adhesive member 7 is directly solidified outside the outer edge of the cover member 3a in plan view and is damaged. The aesthetic appearance of the light emitting module 100d when viewed from the +Z side. In addition, if the adhesive member 7 extends beyond the outer edge of the cover member 3a, for example, when the light-emitting module is assembled into a case of a smartphone or the like, the light-emitting module may not be able to enter the opening of the case. On the other hand, in the third example of the light emitting module 100d, this can be prevented. Other effects are substantially the same as those of the first example of the light emitting module 100d.
(第五变形例)(Fifth Modification)
图13是表示第五变形例的发光模块100e的一个示例的示意性剖面图。在本变形例中，发光模块100e具有仅具有一个发光部10而不是多个发光部10的光源1e、以及光源1e的驱动电路等电子部件8，这一点与实施方式的发光模块100不同。通过在俯视时以与透镜部22重叠的方式设置第二区域32，从发光模块100e的外部难以视觉辨认透镜部22的菲涅耳形状、光源1e以外的配置在第一安装基板5上的电子部件8等。由此，能够提高发光模块100的外观美感。此外，在这样的发光模块100e中，也能够减少照射面中的杂散光。此外，还可以获得向所期望的区域照射光的效果。FIG. 13 is a schematic cross-sectional view showing an example of the light emitting module 100e according to the fifth modification. In this modification, the light-emitting module 100e is different from the light-emitting module 100 of the embodiment in that it includes a light source 1e having only one light-emitting part 10 instead of a plurality of light-emitting parts 10, and electronic components 8 such as a drive circuit of the light source 1e. By arranging the second region 32 so as to overlap the lens portion 22 in a plan view, the Fresnel shape of the lens portion 22 and the electrons other than the light source 1 e arranged on the first mounting substrate 5 are difficult to visually recognize from the outside of the light-emitting module 100 e. Part 8 etc. As a result, the aesthetic appearance of the light emitting module 100 can be improved. In addition, such a light-emitting module 100e can also reduce stray light in the irradiation surface. In addition, the effect of irradiating light to a desired area can be obtained.
(第六变形例)(Sixth modification)
图14是表示第六变形例的发光模块100f的光源1附近的示意性剖面图。在本变形例中，发光模块100f具有安装在第二安装基板9上的光源1，这一点与实施方式的发光模块100不同。FIG. 14 is a schematic cross-sectional view showing the vicinity of the light source 1 of the light-emitting module 100f according to the sixth modified example. In this modification, the light-emitting module 100f has the light source 1 mounted on the second mounting substrate 9, which is different from the light-emitting module 100 of the embodiment.
第二安装基板9是设置在第一安装基板5上的基板。第二安装基板9包含氮化硅、氮化铝等而构成。发光模块100f通过具有第二安装基板9，能够提高光源1等的发热的散热性。The second mounting substrate 9 is a substrate provided on the first mounting substrate 5 . The second mounting substrate 9 is composed of silicon nitride, aluminum nitride, or the like. By having the second mounting substrate 9, the light emitting module 100f can improve the heat dissipation performance of the light source 1 and the like.
以上，对优选的实施方式进行了详细说明，但不限于上述的实施方式，在不脱离权利要求书所记载的范围的情况下，可以对上述的实施方式进行各种变形和置换。The preferred embodiments have been described in detail above. However, the embodiments are not limited to the above-described embodiments. Various modifications and substitutions can be made to the above-described embodiments without departing from the scope described in the claims.
在实施方式的说明中使用的序数、数量等数字都是为了具体说明本发明的技术而例示的，本发明不限于例示的数字。此外，构成要素之间的连接关系是为了具体说明本发明的技术而例示的，并不是将实现本发明的功能的连接关系限定于此。The numbers such as ordinal numbers and quantities used in the description of the embodiments are exemplified for the purpose of specifically describing the technology of the present invention, and the present invention is not limited to the exemplified numbers. In addition, the connection relationship between the constituent elements is exemplified for the purpose of specifically describing the technology of the present invention, and the connection relationship for realizing the functions of the present invention is not limited to this.
本发明的发光模块能够减少照射面的杂散光，因此能够适合用于照明、照相机的闪光灯、车载的前灯等。然而，本发明的发光模块不限于这些应用。The light-emitting module of the present invention can reduce stray light on the illuminated surface, and therefore can be suitably used for lighting, camera flashes, vehicle headlights, and the like. However, the light emitting module of the present invention is not limited to these applications.
本发明的方面例如如下。Aspects of the present invention are as follows, for example.
<项1>一种发光模块，包括：光源；透镜，配置在所述光源上，透射来自所述光源的光；以及盖部件，配置在所述透镜上，所述盖部件在俯视时包含第一区域、第二区域和第三区域，所述第二区域设置在所述第一区域的周围，所述第二区域的光扩散性比所述第一区域的光扩散性高，所述第三区域位于所述第一区域的内侧，透过所述透镜后的来自所述光源的光在所述第三区域入射。<Item 1> A light-emitting module, including: a light source; a lens arranged on the light source to transmit light from the light source; and a cover member arranged on the lens, the cover member including a third A region, a second region and a third region, the second region is arranged around the first region, the light diffusivity of the second region is higher than that of the first region, the third region The third area is located inside the first area, and the light from the light source that passes through the lens is incident on the third area.
<项2>根据<项1>所述的发光模块，其中，所述光源具有包含至少一个发光面的发光区域，当设所述透镜的焦距为f，设沿着所述透镜的光轴的方向上的从所述透镜的焦点到所述盖部件的上表面的最短距离为d，且设沿着所述发光面的方向上的从所述发光区域的中心到所述发光区域的外缘的最长距离为D时，沿着所述发光面的方向上的所述第三区域的最大宽度W由下式表示：<Item 2> The light-emitting module according to <Item 1>, wherein the light source has a light-emitting area including at least one light-emitting surface. When assuming that the focal length of the lens is f, let along the optical axis of the lens The shortest distance in the direction from the focus of the lens to the upper surface of the cover member is d, and assuming that the direction along the light-emitting surface is from the center of the light-emitting area to the outer edge of the light-emitting area When the longest distance is D, the maximum width W of the third region along the direction of the light-emitting surface is expressed by the following formula:
W≥2×D×d/f。W≥2×D×d/f.
<项3>根据<项1>或<项2>所述的发光模块，其中，俯视时，所述第二区域中所述盖部件的上表面和下表面中的至少一方为粗糙面。<Item 3> The light emitting module according to <Item 1> or <Item 2>, wherein at least one of an upper surface and a lower surface of the cover member in the second region is a rough surface in a plan view.
<项4>根据<项1>至<项3>中任一项所述的发光模块，其中，还包括：透镜支承部，支承所述透镜，所述第二区域中的粗糙面设置在所述盖部件的下表面，所述盖部件的所述第二区域经由粘接部件配置在所述透镜支承部上。<Item 4> The light-emitting module according to any one of <Item 1> to <Item 3>, further comprising: a lens support part to support the lens, and the rough surface in the second area is provided at On the lower surface of the cover member, the second region of the cover member is disposed on the lens support portion via an adhesive member.
<项5>根据<项1>至<项4>中任一项所述的发光模块，其中，俯视时，在所述第二区域中所述盖部件的上表面和下表面的至少一方配置有扩散物质。<Item 5> The light-emitting module according to any one of <Item 1> to <Item 4>, wherein at least one of the upper surface and the lower surface of the cover member is arranged in the second region when viewed from above. There are diffusing substances.
<项6>根据<项1>至<项5>中任一项所述的发光模块，其中，在所述第二区域中所述盖部件的内部含有扩散物质。<Item 6> The light emitting module according to any one of <Item 1> to <Item 5>, wherein a diffusing substance is contained inside the cover member in the second region.
<项7>根据<项1>至<项6>中任一项所述的发光模块，其中，所述透镜包括凸透镜。<Item 7> The light-emitting module according to any one of <Item 1> to <Item 6>, wherein the lens includes a convex lens.
<项8>根据<项7>所述的发光模块，其中，所述透镜具有透镜部，所述透镜部的光出射面包含菲涅耳形状，俯视时，所述透镜部与所述第二区域重叠。<Item 8> The light emitting module according to <Item 7>, wherein the lens includes a lens portion, a light emitting surface of the lens portion includes a Fresnel shape, and the lens portion overlaps the second region in a plan view.
<项9>根据<项1>至<项8>中任一项所述的发光模块，其中，还包括：透镜支承部，支承所述透镜，所述透镜支承部的外侧面包含凹部。<Item 9> The light-emitting module according to any one of <Item 1> to <Item 8>, further comprising: a lens support portion that supports the lens, and an outer surface of the lens support portion includes a concave portion.
<项10>根据<项1>至<项9>中任一项所述的发光模块，其中，所述光源包括多个发光部，透过所述透镜后的所述多个发光部各自的光照射位于以所述透镜的光轴上的点为中心而与所述多个发光部各自的位置相反的一侧的区域。<Item 10> A light-emitting module according to any one of <Item 1> to <Item 9>, wherein the light source includes a plurality of light-emitting parts, and light from each of the plurality of light-emitting parts after passing through the lens illuminates an area located on the side opposite to the respective positions of the plurality of light-emitting parts centered on a point on the optical axis of the lens.
<项11>根据<项1>至<项10>中任一项所述的发光模块，其中，所述光源包括至少一个发光部，所述发光部具有发光元件、波长转换部件和遮光部件，所述发光元件的侧面和所述波长转换部件的侧面分别被所述遮光部件覆盖。<Item 11> A light-emitting module according to any one of <Item 1> to <Item 10>, wherein the light source includes at least one light-emitting portion, the light-emitting portion having a light-emitting element, a wavelength conversion component and a shading component, and the side surfaces of the light-emitting element and the side surfaces of the wavelength conversion component are respectively covered by the shading components.
<项12>根据<项11>所述的发光模块，其中，所述光源包括多个所述发光部，所述遮光部件一体地保持多个所述发光元件和多个所述波长转换部件。<Item 12> The light-emitting module according to <Item 11>, wherein the light source includes a plurality of the light-emitting parts, and the light-shielding member integrally holds a plurality of the light-emitting elements and a plurality of the wavelength converting members.
<项13>根据<项1>至<项12>中任一项所述的发光模块，其中，所述发光模块用于闪光灯。<Item 13> The light-emitting module according to any one of <Item 1> to <Item 12>, wherein the light-emitting module is used for a flash lamp.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022-156583 | 2022-09-29 | ||
| JP2022-165428 | 2022-10-14 | ||
| JP2022-182724 | 2022-11-15 | ||
| JP2023096437AJP2024050405A (en) | 2022-09-29 | 2023-06-12 | Light Emitting Module |
| JP2023-096437 | 2023-06-12 |
| Publication Number | Publication Date |
|---|---|
| CN117790673Atrue CN117790673A (en) | 2024-03-29 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311247322.1APendingCN117790673A (en) | 2022-09-29 | 2023-09-25 | Light emitting module |
| Country | Link |
|---|---|
| CN (1) | CN117790673A (en) |
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