技术领域technical field
本实用新型涉及一种LED反射透镜。The utility model relates to an LED reflection lens.
背景技术Background technique
LED液晶显示器相对于传统的CRT显示器，具有绿色环保、功耗低、显示效果更好等特点，因此广受人们青睐。而背光模组是LED液晶显示器中的关键组件之一，由于液晶面板本身不发光，因此需要背光模组为液晶面板提供光源以实现图像显示，而灯条是背光模组中直接发光的重要器件。 Compared with the traditional CRT display, LED liquid crystal display has the characteristics of green environmental protection, low power consumption, and better display effect, so it is widely favored by people. The backlight module is one of the key components in the LED liquid crystal display. Since the liquid crystal panel itself does not emit light, it is necessary for the backlight module to provide a light source for the liquid crystal panel to realize image display, and the light bar is an important device that directly emits light in the backlight module. .
目前，直下式LED灯条在背光模组中所占比例越来愈大，而现有搭配直下式LED灯条的反射式透镜尺寸较大（长、宽为：17mmX17mm）,使得所用PCB的宽度较宽，灯条的成本可降空间较小。At present, the proportion of direct-type LED light strips in the backlight module is increasing, and the existing reflective lens with direct-type LED light strips is relatively large in size (length and width: 17mmX17mm), making the width of the PCB used Wider, the cost of the light bar can be reduced with less space.
实用新型内容Utility model content
本实用新型要解决的技术问题是提供一种尺寸小的LED反射透镜，使得所用PCB的宽度较小，灯条成本可大幅降低。The technical problem to be solved by the utility model is to provide a small-sized LED reflective lens, so that the width of the PCB used is small, and the cost of the light bar can be greatly reduced.
本实用新型的技术方案为：一种LED反射透镜，包括底壁、周壁和顶壁，其特征在于，所述底壁中间部分向上凹陷形成避让LED灯的凹槽，所述凹槽的顶壁为第一入光面，所述凹槽的周壁为第二入光面，该LED反射透镜的周壁为出光面，该LED反射透镜的顶壁为向下凹陷的呈喇叭状的全反射面，所述底壁为方形，该方形的底壁的长为14mm，宽为14mm。The technical scheme of the utility model is: an LED reflective lens, comprising a bottom wall, a peripheral wall and a top wall, characterized in that the middle part of the bottom wall is recessed upwards to form a groove for avoiding the LED lamp, and the top wall of the groove is the first light incident surface, the surrounding wall of the groove is the second light incident surface, the surrounding wall of the LED reflective lens is the light emitting surface, and the top wall of the LED reflective lens is a trumpet-shaped total reflection surface concave downward, The bottom wall is square, the length of the square bottom wall is 14mm, and the width is 14mm.
所述出光面包括从上至下依次连接的第一部分、第二部分和第三部分，第一部分与所述LED反射透镜的顶壁连接，第三部分与LED反射透镜的底壁连接。The light-emitting surface includes a first part, a second part and a third part connected sequentially from top to bottom, the first part is connected to the top wall of the LED reflective lens, and the third part is connected to the bottom wall of the LED reflective lens.
所述凹槽的横截面积在从上至下的方向上逐渐增大。The cross-sectional area of the groove gradually increases from top to bottom.
所述第一入光面的中间部分为向上凹陷的呈喇叭状的曲面。The middle part of the first light incident surface is a trumpet-shaped curved surface concave upward.
所述LED反射透镜为中轴线对称的回转体结构。The LED reflective lens is a structure of a body of revolution symmetrical to the central axis.
所述LED反射透镜的底壁设有垫脚。The bottom wall of the LED reflective lens is provided with feet.
本实用新型提出的LED反射透镜相对于现有技术尺寸小，使得所用PCB的宽度较小，灯条成本可大幅降低。Compared with the prior art, the size of the LED reflective lens proposed by the utility model is small, so that the width of the PCB used is small, and the cost of the light bar can be greatly reduced.
附图说明Description of drawings
图1为本实用新型实施例中LED反射透镜的剖视结构图。Fig. 1 is a cross-sectional structure diagram of an LED reflective lens in an embodiment of the present invention.
图2为本实用新型实施例中LED反射透镜应用在背光模组中的示意图。FIG. 2 is a schematic diagram of an LED reflective lens applied in a backlight module in an embodiment of the present invention.
图3为本实用新型实施例中LED反射透镜的结构图。Fig. 3 is a structural diagram of the LED reflective lens in the embodiment of the present invention.
具体实施方式detailed description
如图1，本实用新型实施例中提供的LED反射透镜，该LED反射透镜为实体且为中轴线对称的回转体结构，用来安装在LED灯条上以改变LED灯的光强分布。该LED反射透镜呈现的光学效果与现有反射式透镜一致。As shown in Fig. 1, the LED reflective lens provided in the embodiment of the present utility model is solid and symmetrical to the central axis, and is used to be installed on the LED light bar to change the light intensity distribution of the LED light. The optical effect presented by the LED reflective lens is consistent with that of the existing reflective lens.
该LED反射透镜包括底壁、周壁和顶壁，该LED反射透镜的底壁10中间部分向上凹陷形成避让LED灯的凹槽11，LED灯的出光面为圆形。凹槽11的顶壁为第一入光面111，凹槽11的周壁为第二入光面112，LED灯发出的光穿过第一入光面111和第二入光面112进入该LED反射透镜。该LED反射透镜的周壁为出光面20，该LED反射透镜的顶壁为向下凹陷的呈喇叭状的全反射面30，该LED反射透镜的顶壁对LED灯发出的光进行全反射。The LED reflective lens includes a bottom wall, a peripheral wall and a top wall. The middle part of the bottom wall 10 of the LED reflective lens is recessed upward to form a groove 11 for avoiding the LED lamp. The light emitting surface of the LED lamp is circular. The top wall of the groove 11 is the first light incident surface 111, and the peripheral wall of the groove 11 is the second light incident surface 112. The light emitted by the LED lamp enters the LED through the first light incident surface 111 and the second light incident surface 112. reflective lens. The peripheral wall of the LED reflective lens is a light emitting surface 20 , the top wall of the LED reflective lens is a trumpet-shaped total reflection surface 30 sunken downward, and the top wall of the LED reflective lens totally reflects the light emitted by the LED lamp.
该LED反射透镜的底壁为方形，该方形的底壁的长为14mm，宽为14mm，在从上至下的方向上底壁的横截面积最大。The bottom wall of the LED reflective lens is square, the length of the square bottom wall is 14mm, and the width is 14mm, and the cross-sectional area of the bottom wall is the largest in the direction from top to bottom.
出光面20包括从上至下依次连接的第一部分21、第二部分22和第三部分23，光线可以从第一部分21、第二部分22和第三部分23射出，使得光线的发散效果更好，从该LED反射透镜射出的光线更加均匀。第一部分21与该LED反射透镜的全反射面连接，第三部分23与该LED反射透镜的底壁连接。第一部分21的纵截线为第一曲线，第二部分22纵截线为第二曲线，第三部分23的纵截线为第三曲线，第一曲线、第二曲线和第三曲线的曲率不相同。The light emitting surface 20 includes a first part 21, a second part 22 and a third part 23 which are sequentially connected from top to bottom. The light can be emitted from the first part 21, the second part 22 and the third part 23, so that the divergence effect of the light is better , the light emitted from the LED reflective lens is more uniform. The first part 21 is connected with the total reflection surface of the LED reflective lens, and the third part 23 is connected with the bottom wall of the LED reflective lens. The longitudinal section of the first part 21 is the first curve, the longitudinal section of the second part 22 is the second curve, the longitudinal section of the third part 23 is the third curve, the curvature of the first curve, the second curve and the third curve Are not the same.
如图2，该LED反射透镜的原理为：LED灯40发出的光线分两部分射出，一部分光线经入光面折射后到达全反射面，并经全反射面反射改变方向后到达出光面，再经出光面折射后射出；另一部分光线经入光面折射后直接到达出光面，再经出光面折射后射出。在实际应用中由于经出光面折射后射出的光线会朝向该LED反射透镜的斜上方和斜下方，背光模组的扩散板50设置在该LED反射透镜的上方，这样朝该LED反射透镜的斜上方射出的光线会到达扩散板50，而朝该LED反射透镜的斜下方射出的光线需要经设置在该LED反射透镜下方的反射纸60反射后改变方向来到达背光模组的扩散板50。As shown in Figure 2, the principle of the LED reflective lens is: the light emitted by the LED lamp 40 is emitted in two parts, and part of the light reaches the total reflection surface after being refracted by the light incident surface, and reaches the light exit surface after being reflected by the total reflection surface and changing direction, and then After being refracted by the light-emitting surface, it is emitted; another part of the light is refracted by the light-incoming surface and directly reaches the light-emitting surface, and then refracted by the light-emitting surface and then emitted. In practical application, since the light emitted after being refracted by the light-emitting surface will face obliquely above and obliquely below the LED reflective lens, the diffuser plate 50 of the backlight module is arranged above the LED reflective lens, so that it faces obliquely above the LED reflective lens. The light emitted from above will reach the diffuser plate 50, while the light emitted obliquely below the LED reflective lens needs to be reflected by the reflective paper 60 arranged under the LED reflective lens and then change direction to reach the diffuser plate 50 of the backlight module.
如图1，凹槽11的横截面积在从上至下的方向上逐渐增大。第一入光面111的中间部分为向上凹陷的呈喇叭状的曲面。As shown in FIG. 1 , the cross-sectional area of the groove 11 gradually increases from top to bottom. The middle portion of the first light incident surface 111 is a horn-shaped curved surface concave upward.
如图3，该LED反射透镜的底壁10设有垫脚12，用于将该LED反射透镜放置于LED灯条上。As shown in FIG. 3 , the bottom wall 10 of the LED reflective lens is provided with feet 12 for placing the LED reflective lens on the LED light bar.
以上的具体实施例仅用以举例说明本实用新型的构思，本领域的普通技术人员在本实用新型的构思下可以做出多种变形和变化，这些变形和变化均包括在本实用新型的保护范围之内。The above specific embodiments are only used to illustrate the concept of the present utility model, those of ordinary skill in the art can make various deformations and changes under the concept of the present utility model, and these deformations and changes are all included in the protection of the present utility model. within range.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720903764.0UCN207018852U (en) | 2017-07-25 | 2017-07-25 | A kind of LED reflection lens |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720903764.0UCN207018852U (en) | 2017-07-25 | 2017-07-25 | A kind of LED reflection lens |
| Publication Number | Publication Date |
|---|---|
| CN207018852Utrue CN207018852U (en) | 2018-02-16 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720903764.0UExpired - Fee RelatedCN207018852U (en) | 2017-07-25 | 2017-07-25 | A kind of LED reflection lens |
| Country | Link |
|---|---|
| CN (1) | CN207018852U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775553A (en)* | 2018-06-19 | 2018-11-09 | 苏州欧普照明有限公司 | A kind of lens and light source module group |
| WO2020078475A1 (en)* | 2018-10-18 | 2020-04-23 | 欧普照明股份有限公司 | Light distribution element and lamp |
| CN112445028A (en)* | 2019-08-30 | 2021-03-05 | 莫列斯有限公司 | Reflection diffusion lens and light emitting module comprising same |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775553A (en)* | 2018-06-19 | 2018-11-09 | 苏州欧普照明有限公司 | A kind of lens and light source module group |
| CN108775553B (en)* | 2018-06-19 | 2023-07-25 | 苏州欧普照明有限公司 | Lens and light source module |
| WO2020078475A1 (en)* | 2018-10-18 | 2020-04-23 | 欧普照明股份有限公司 | Light distribution element and lamp |
| CN112445028A (en)* | 2019-08-30 | 2021-03-05 | 莫列斯有限公司 | Reflection diffusion lens and light emitting module comprising same |
| Publication | Publication Date | Title |
|---|---|---|
| CN102705777B (en) | Secondary lens with bottom of curved surface structure | |
| CN100507610C (en) | Light guide lens and light emitting diode packaging structure with same | |
| CN105042507B (en) | Light-emitting device, planar light source device and display device | |
| CN105444044A (en) | LED luminescent device, backlight unit and display panel | |
| CN103439833A (en) | Backlight module and display device comprising same | |
| CN204790052U (en) | Poor light module and liquid crystal display device | |
| CN101865376A (en) | Manufacturing method of backlight module, display and reflector of backlight module | |
| CN101676620A (en) | Liquid crystal display device, backlight module and light-emitting unit | |
| CN207018852U (en) | A kind of LED reflection lens | |
| CN105020677A (en) | Wide-angle lens used for uniform near-field illumination | |
| TW201441687A (en) | Light guide device and backlight module with same | |
| CN108519639A (en) | Light guide film material, direct type backlight module and display device | |
| CN204285310U (en) | Optical lens, lamp bar and down straight aphototropism mode set | |
| CN206739209U (en) | A reflective LED lens | |
| CN207020425U (en) | A kind of LED refractors | |
| CN204986868U (en) | Straight reflective optical lens of following formula miniature of TV set | |
| CN208058745U (en) | A kind of polarisation wall lamp lens that major and minor axis angle difference is big | |
| CN203615093U (en) | Two-sided luminous type plane lamps and lanterns | |
| CN101158785A (en) | Edge-lit backlight module | |
| CN207762826U (en) | Multi-panel reflective lens | |
| CN204554404U (en) | A kind of 600x600mm mixed light is apart from the direct-illumination type panel lamp of 25mm | |
| CN205208443U (en) | A lens, a backlight module having the lens, and a display device | |
| CN204964800U (en) | Structure of making an uproar falls in anti - income light side of diffusion barrier | |
| CN204347394U (en) | An energy-saving liquid crystal display | |
| CN107678084A (en) | A large-area light guide plate |
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20180216 | |
| CF01 | Termination of patent right due to non-payment of annual fee |