技术领域technical field
本发明涉及一种光学摄像透镜组，特别是关于一种应用于可携式电子产品上的小型化光学摄像透镜组。The invention relates to an optical camera lens group, in particular to a miniaturized optical camera lens group applied to portable electronic products.
背景技术Background technique
最近几年来，随着具有取像功能的可携式电子产品的兴起，小型化摄影镜头的需求日渐提高，而一般摄影镜头的感光元件不外乎是感光耦合元件(Charge Coupled Device，CCD)或互补性金属氧化物半导体元件(Complementary Metal-Oxide Semiconductor Sensor，CMOSSensor)两种，且随着半导体制造工艺技术的精进，使得感光元件的像素尺寸缩小，小型化摄影镜头逐渐往高像素领域发展，因此，对成像品质的要求也日益增加。In recent years, with the rise of portable electronic products with imaging functions, the demand for miniaturized photographic lenses has increased day by day, and the photosensitive element of general photographic lenses is nothing more than a charge coupled device (CCD) or There are two kinds of Complementary Metal-Oxide Semiconductor Sensor (CMOSSensor), and with the advancement of semiconductor manufacturing technology, the pixel size of the photosensitive element is reduced, and the miniaturized photographic lens is gradually developing towards the high-pixel field. Therefore, , the requirements for image quality are also increasing.
传统搭载于可携式电子产品上的小型化摄影镜头，多采用四片式透镜结构为主，如美国专利第7,365,920号所示，其中第一透镜及第二透镜是以二片玻璃球面镜互相黏合而成为Doublet(双合透镜)，用以消除色差。但此方法有其缺点，其一，过多的玻璃球面镜配置使得系统自由度不足，造成系统的总长度不易缩短；其二，玻璃镜片黏合的制造工艺不易，造成制造上的困难。此外，美国专利第7,643,225号揭露了一种四片独立透镜构成的光学镜头，包含有多个非球面透镜，可以有效缩短系统的总长度，且获得不错的成像品质。Traditional miniaturized photographic lenses mounted on portable electronic products mostly adopt a four-piece lens structure, as shown in US Patent No. 7,365,920, in which the first lens and the second lens are bonded to each other by two glass spherical mirrors It becomes a Doublet (doublet lens) to eliminate chromatic aberration. However, this method has its disadvantages. First, too many glass spherical mirror configurations make the system less free, which makes it difficult to shorten the total length of the system. Second, the manufacturing process of glass lens bonding is not easy, causing manufacturing difficulties. In addition, US Patent No. 7,643,225 discloses an optical lens composed of four independent lenses, including a plurality of aspheric lenses, which can effectively shorten the total length of the system and obtain good imaging quality.
但由于智能型手机(Smart Phone)与PDA(Personal Digital Assistant)等高规格行动装置的盛行，带动小型化摄影镜头在像素与成像品质上的迅速攀升，现有的四片式透镜组将无法满足更高阶的摄影镜头模块，再加上电子产品不断地往高性能且轻薄化的趋势发展，搭载有高像素、高性能的小型化摄影镜头俨然已成为高阶电子产品发展的重要标的。However, due to the prevalence of high-standard mobile devices such as Smart Phones and PDAs (Personal Digital Assistants), the miniaturized photographic lenses have rapidly increased in terms of pixels and imaging quality, and the existing four-element lens group will not be able to meet the requirements Higher-end photographic lens modules, coupled with the continuous development of high-performance and thinner electronic products, miniaturized photographic lenses with high pixels and high performance have become an important target for the development of high-end electronic products.
有鉴于此，急需一种适用于轻薄、可携式电子产品上，成像品质佳且不至于使镜头总长度过长的光学摄像透镜组。In view of this, there is an urgent need for an optical camera lens group suitable for thin and light portable electronic products, which has good imaging quality and does not make the total length of the lens too long.
发明内容Contents of the invention
本发明提供一种光学摄像透镜组，包含五枚具屈折力的透镜，由物侧至像侧依序为：一具正屈折力的第一透镜，其物侧表面为凸面；一具负屈折力的第二透镜；一第三透镜，其物侧表面为凸面及像侧表面为凹面；一第四透镜，其物侧表面与像侧表面皆为非球面；及一第五透镜，其像侧表面为凹面，且该第五透镜的像侧表面上设置有至少一个反曲点；其中，该第四透镜在光轴上的厚度为CT4，该第五透镜在光轴上的厚度为CT5，该光圈至该电子感光元件在光轴上的距离为SL，该第一透镜的物侧表面至该电子感光元件在光轴上的距离为TTL，满足下列关系式：0.8＜CT4/CT5＜1.5；及0.7＜SL/TTL＜1.1。The invention provides an optical imaging lens group, which includes five lenses with refractive power, which are in sequence from the object side to the image side: a first lens with positive refractive power, the surface of which is convex on the object side; The second lens of force; A third lens, its object side surface is a convex surface and image side surface is a concave surface; A fourth lens, its object side surface and image side surface are all aspherical; And a fifth lens, its image The side surface is concave, and at least one inflection point is set on the image-side surface of the fifth lens; wherein, the thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5 , the distance from the aperture to the electronic photosensitive element on the optical axis is SL, the distance from the object-side surface of the first lens to the electronic photosensitive element on the optical axis is TTL, and the following relationship is satisfied: 0.8<CT4/CT5< 1.5; and 0.7<SL/TTL<1.1.
本发明光学摄像透镜组中，该第一透镜具正屈折力，提供系统所需的部分屈折力，有助于缩短该光学摄像透镜组的总长度；该第二透镜具负屈折力，可有效对具正屈折力的该第一透镜所产生的像差做补正，且同时有利于修正系统的色差；该第三透镜可为负屈折力透镜或正屈折力透镜；当该第三透镜具负屈折力时，可有效修正系统的佩兹伐和数(PetzvalSum)，使周边像面变得更平；当该第三透镜具正屈折力时，则有利于修正系统的高阶像差。In the optical imaging lens group of the present invention, the first lens has positive refractive power, which provides part of the required refractive power of the system and helps to shorten the total length of the optical imaging lens group; the second lens has negative refractive power, which can effectively The aberration produced by the first lens with positive refractive power is corrected, and at the same time it is beneficial to correct the chromatic aberration of the system; the third lens can be a negative refractive power lens or a positive refractive power lens; when the third lens has a negative refractive power When the refractive power is high, the Petzval Sum of the system can be effectively corrected to make the peripheral image plane flatter; when the third lens has positive refractive power, it is beneficial to correct the high-order aberrations of the system.
本发明光学摄像透镜组中，该第一透镜可为一双凸透镜或为一物侧表面为凸面及像侧表面为凹面的新月形透镜；当该第一透镜为一双凸透镜时，可有效加强该第一透镜的屈折力配置，进而使得该光学摄像透镜组的总长度变得更短；当该第一透镜为一凸凹的新月形透镜时，则较有利于修正系统的像散(Astigmatism)。该第三透镜的物侧表面为凸面及像侧表面为凹面，可有效修正系统像差，亦可加强修正系统产生的像散，以提高光学摄像透镜组的成像品质。该第五透镜的像侧表面为凹面，可使系统的主点(Principal Point)较远离成像面，有利于缩短系统的光学总长度，以维持镜头的小型化，进一步，该第五透镜上设置有反曲点，将可更有效地压制离轴视场的光线入射于感光元件上的角度，并且进一步修正离轴视场的像差。In the optical imaging lens group of the present invention, the first lens can be a biconvex lens or a crescent lens whose surface on the object side is convex and the surface on the image side is concave; when the first lens is a biconvex lens, it can effectively strengthen the The refractive power configuration of the first lens makes the total length of the optical imaging lens group shorter; when the first lens is a convex-concave crescent lens, it is more conducive to correcting the astigmatism (Astigmatism) of the system . The object-side surface of the third lens is convex and the image-side surface is concave, which can effectively correct system aberrations and strengthen the correction of astigmatism generated by the system, so as to improve the imaging quality of the optical camera lens group. The image-side surface of the fifth lens is concave, which can make the principal point (Principal Point) of the system far away from the imaging surface, which is beneficial to shorten the total optical length of the system and maintain the miniaturization of the lens. Further, the fifth lens is provided with There is an inflection point, which can more effectively suppress the angle of light incident on the photosensitive element of the off-axis field of view, and further correct the aberration of the off-axis field of view.
本发明通过上述的镜组配置方式，可以有效缩小镜头体积、降低光学系统的敏感度，更能获得较高的解像力。The present invention can effectively reduce the volume of the lens, reduce the sensitivity of the optical system, and obtain higher resolution through the above configuration of the lens group.
附图说明Description of drawings
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，并不构成对本发明的限定。在附图中：The drawings described here are used to provide further understanding of the present invention, constitute a part of the application, and do not limit the present invention. In the attached picture:
图1A为本发明第一实施例的光学系统示意图。FIG. 1A is a schematic diagram of an optical system according to a first embodiment of the present invention.
图1B为本发明第一实施例的像差曲线图。FIG. 1B is an aberration curve diagram of the first embodiment of the present invention.
图2A为本发明第二实施例的光学系统示意图。FIG. 2A is a schematic diagram of an optical system according to a second embodiment of the present invention.
图2B为本发明第二实施例的像差曲线图。FIG. 2B is an aberration curve diagram of the second embodiment of the present invention.
图3A为本发明第三实施例的光学系统示意图。FIG. 3A is a schematic diagram of an optical system according to a third embodiment of the present invention.
图3B为本发明第三实施例的像差曲线图。FIG. 3B is an aberration curve diagram of the third embodiment of the present invention.
图4A为本发明第四实施例的光学系统示意图。FIG. 4A is a schematic diagram of an optical system according to a fourth embodiment of the present invention.
图4B为本发明第四实施例的像差曲线图。FIG. 4B is an aberration curve diagram of the fourth embodiment of the present invention.
图5A为本发明第五实施例的光学系统示意图。FIG. 5A is a schematic diagram of an optical system according to a fifth embodiment of the present invention.
图5B为本发明第五实施例的像差曲线图。FIG. 5B is an aberration curve diagram of the fifth embodiment of the present invention.
图6为表一，为本发明第一实施例的光学数据。FIG. 6 is Table 1, which is the optical data of the first embodiment of the present invention.
图7A及图7B为表二A及表二B，为本发明第一实施例的非球面数据。7A and 7B are Table 2 A and Table 2 B, which are the aspheric data of the first embodiment of the present invention.
图8为表三，为本发明第二实施例的光学数据。FIG. 8 is Table 3, which is the optical data of the second embodiment of the present invention.
图9A及图9B为表四A及表四B，为本发明第二实施例的非球面数据。9A and 9B are Table 4A and Table 4B, which are aspheric data of the second embodiment of the present invention.
图10为表五，为本发明第三实施例的光学数据。FIG. 10 is Table 5, which is the optical data of the third embodiment of the present invention.
图11A及图11B为表六A及表六B，为本发明第三实施例的非球面数据。11A and 11B are Table 6A and Table 6B, which are the aspheric data of the third embodiment of the present invention.
图12为表七，为本发明第四实施例的光学数据。FIG. 12 is Table 7, which is the optical data of the fourth embodiment of the present invention.
图13A及图13B为表八A及表八B，为本发明第四实施例的非球面数据。FIG. 13A and FIG. 13B are Table 8 A and Table 8 B, which are aspherical data of the fourth embodiment of the present invention.
图14为表九，为本发明第五实施例的光学数据。FIG. 14 is Table 9, which is the optical data of the fifth embodiment of the present invention.
图15为表十，为本发明第五实施例的非球面数据。FIG. 15 is Table 10, which shows the aspheric data of the fifth embodiment of the present invention.
图16为表十一，为本发明第一至第五实施例相关关系式的数值数据。FIG. 16 is Table 11, which is the numerical data of the correlation expressions of the first to fifth embodiments of the present invention.
图17为描述Y42及SAG42所代表的距离与相对位置。Figure 17 illustrates the distances and relative positions represented by Y42 and SAG42.
附图标号：Figure number:
第一透镜 110、210、310、410、510First lens 110, 210, 310, 410, 510
物侧表面 111、211、311、411、511Object side surface 111, 211, 311, 411, 511
像侧表面 112、212、312、412、512Image side surface 112, 212, 312, 412, 512
第二透镜 120、220、320、420、520Second lens 120, 220, 320, 420, 520
物侧表面 121、221、321、421、521Object side surface 121, 221, 321, 421, 521
像侧表面 122、222、322、422、522Image side surface 122, 222, 322, 422, 522
第三透镜 130、230、330、430、530Third lens 130, 230, 330, 430, 530
物侧表面 131、231、331、431、531Object side surface 131, 231, 331, 431, 531
像侧表面 132、232、332、432、532Image side surface 132, 232, 332, 432, 532
第四透镜 140、240、340、440、540Fourth lens 140, 240, 340, 440, 540
物侧表面 141、241、341、441、541Object side surface 141, 241, 341, 441, 541
像侧表面 142、242、342、442、542Image side surface 142, 242, 342, 442, 542
第五透镜 150、250、350、450、550Fifth lens 150, 250, 350, 450, 550
物侧表面 151、251、351、451、551Object side surface 151, 251, 351, 451, 551
像侧表面 152、252、352、452、552Image side surface 152, 252, 352, 452, 552
光圈 100、200、300、400、500Aperture 100, 200, 300, 400, 500
红外线滤除滤光片170、270、370、470、570Infrared cut filter 170, 270, 370, 470, 570
成像面 160、260、360、460、560Imaging surface 160, 260, 360, 460, 560
整体光学摄像透镜组的焦距为fThe focal length of the overall optical camera lens group is f
第一透镜的焦距为f1The focal length of the first lens is f1
第三透镜的焦距为f3The focal length of the third lens is f3
第四透镜的焦距为f4The focal length of the fourth lens is f4
第五透镜的焦距为f5The focal length of the fifth lens is f5
第一透镜的色散系数为V1The dispersion coefficient of the first lens is V1
第二透镜的色散系数为V2The dispersion coefficient of the second lens is V2
第一透镜的物侧表面曲率半径为R1The radius of curvature of the object-side surface of the first lens is R1
第一透镜的像侧表面曲率半径为R2The radius of curvature of the image side surface of the first lens is R2
第二透镜在光轴上的厚度为CT2The thickness of the second lens on the optical axis is CT2
第四透镜在光轴上的厚度为CT4The thickness of the fourth lens on the optical axis is CT4
第五透镜在光轴上的厚度为CT5The thickness of the fifth lens on the optical axis is CT5
第二透镜与第三透镜在光轴上的间隔距离为T23The distance between the second lens and the third lens on the optical axis is T23
光圈至电子感光元件在光轴上的距离为SLThe distance from the aperture to the electronic photosensitive element on the optical axis is SL
第一透镜的物侧表面至电子感光元件在光轴上的距离为TTLThe distance from the object-side surface of the first lens to the electronic photosensitive element on the optical axis is TTL
电子感光元件有效像素区域对角线长的一半为ImgHHalf of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH
该第四透镜的像侧表面上光线通过的最大范围位置与光轴的垂直距离为Y42The vertical distance between the position of the maximum range where light passes through on the image side surface of the fourth lens and the optical axis is Y42
该第四透镜的像侧表面上距离光轴为Y42的位置与相切于该透镜光轴顶点上的切面的距离为SAG42The distance between the position Y42 from the optical axis on the image side surface of the fourth lens and the tangent plane tangent to the vertex of the lens optical axis is SAG42
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚明白，下面结合附图对本发明实施例做进一步详细说明。在此，本发明的示意性实施例及其说明用于解释本发明，但并不作为对本发明的限定。In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
本发明提供一种光学摄像透镜组，包含五枚具屈折力的透镜，由物侧至像侧依序为：一具正屈折力的第一透镜，其物侧表面为凸面；一具负屈折力的第二透镜；一第三透镜，其物侧表面为凸面及像侧表面为凹面；一第四透镜，该物侧表面与像侧表面皆为非球面；及一第五透镜，其像侧表面为凹面，且该第五透镜的像侧表面上设置有至少一个反曲点；其中，该第四透镜在光轴上的厚度为CT4，该第五透镜在光轴上的厚度为CT5，该光圈至该电子感光元件在光轴上的距离为SL，该第一透镜的物侧表面至该电子感光元件在光轴上的距离为TTL，满足下列关系式：0.8＜CT4/CT5＜1.5；及0.7＜SL/TTL＜1.1。The invention provides an optical imaging lens group, which includes five lenses with refractive power, which are in sequence from the object side to the image side: a first lens with positive refractive power, the surface of which is convex on the object side; The second lens of force; A third lens, its object side surface is a convex surface and image side surface is a concave surface; A fourth lens, the object side surface and image side surface are all aspherical; And a fifth lens, its image The side surface is concave, and at least one inflection point is set on the image-side surface of the fifth lens; wherein, the thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5 , the distance from the aperture to the electronic photosensitive element on the optical axis is SL, the distance from the object-side surface of the first lens to the electronic photosensitive element on the optical axis is TTL, and the following relationship is satisfied: 0.8<CT4/CT5< 1.5; and 0.7<SL/TTL<1.1.
当CT4/CT5满足下列关系式：0.8＜CT4/CT5＜1.5，该第四透镜与该第五透镜的厚度不至于过大或过小，有利于镜片的组装配置。When CT4/CT5 satisfies the following relationship: 0.8<CT4/CT5<1.5, the thicknesses of the fourth lens and the fifth lens will not be too large or too small, which is beneficial to the assembly and configuration of the lenses.
当SL/TTL满足下列关系式：0.7＜SL/TTL＜1.1，有利于该光学摄像透镜组在远心特性与广视场角中取得良好的平衡；进一步，较佳地，满足下列关系式：0.8＜SL/TTL＜1.0。When SL/TTL satisfies the following relationship: 0.7<SL/TTL<1.1, it is beneficial for the optical imaging lens group to achieve a good balance between the telecentric characteristics and the wide field of view; further, preferably, the following relationship is satisfied: 0.8<SL/TTL<1.0.
本发明前述光学摄像透镜组中，较佳地，该第二透镜的像侧表面为凹面，以有效增大系统的后焦距，以确保系统有足够的后焦距可放置其他的构件；较佳地，该第三透镜上设置有反曲点，将可更有效地压制离轴视场的光线入射于感光元件上的角度，并且进一步修正离轴视场的像差。较佳地，该第四透镜为一物侧表面为凹面、像侧表面为凸面的新月型透镜，有利于修正系统的像散。此外，该各透镜之间有一空气间隔，可避免镜片组装上的困难。In the aforementioned optical imaging lens group of the present invention, preferably, the image-side surface of the second lens is concave, so as to effectively increase the back focus of the system, so as to ensure that the system has sufficient back focus for placing other components; preferably , the third lens is provided with an inflection point, which can more effectively suppress the angle at which the off-axis field of view light is incident on the photosensitive element, and further correct the aberration of the off-axis field of view. Preferably, the fourth lens is a crescent lens with a concave surface on the object side and a convex surface on the image side, which is beneficial to correct astigmatism of the system. In addition, there is an air space between the lenses, which can avoid the difficulty of lens assembly.
本发明前述光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第三透镜的焦距为f3，较佳地，满足下列关系式：-0.5＜f/f3＜0.6。当f/f3满足上述关系式时，该第三透镜的屈折力较为合适，可有助于修正该第一透镜所产生的像差，且不至于使本身透镜屈折力过大，因此较有利于降低系统的敏感度；进一步，较佳是满足下列关系式：-0.2＜f/f3＜0.5。In the aforementioned optical imaging lens group of the present invention, the focal length of the overall optical imaging lens group is f, and the focal length of the third lens is f3, preferably, the following relationship is satisfied: -0.5<f/f3<0.6. When f/f3 satisfies the above relational expression, the refractive power of the third lens is more appropriate, which can help to correct the aberration produced by the first lens, and will not make the refractive power of the lens itself too large, so it is more beneficial Reduce the sensitivity of the system; further, it is preferable to satisfy the following relationship: -0.2<f/f3<0.5.
本发明前述光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第四透镜的焦距为f4，该第五透镜的焦距为f5，较佳地，满足下列关系式：1.8＜|f/f4|+|f/f5|＜3.0。当|f/f4|+|f/f5|满足上述关系式时，该第四透镜与该第五透镜的屈折力配置较为平衡，有利于降低系统的敏感度与像差的产生。In the foregoing optical imaging lens group of the present invention, the focal length of the overall optical imaging lens group is f, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5. Preferably, the following relationship is satisfied: 1.8<|f /f4|+|f/f5|<3.0. When |f/f4|+|f/f5| satisfies the above relational expression, the refractive power configuration of the fourth lens and the fifth lens is relatively balanced, which is beneficial to reduce the sensitivity and aberration of the system.
本发明前述光学摄像透镜组中，该第一透镜的物侧表面曲率半径为R1，该第一透镜的像侧表面曲率半径为R2，较佳地，满足下列关系式：-0.3＜R1/R2＜0.3。当R1/R2满足上述关系式时，有助于系统球差(Spherical Aberration)的补正。In the aforementioned optical imaging lens group of the present invention, the curvature radius of the object-side surface of the first lens is R1, and the curvature radius of the image-side surface of the first lens is R2. Preferably, the following relationship is satisfied: -0.3<R1/R2 <0.3. When R1/R2 satisfies the above relationship, it is helpful to correct the spherical aberration (Spherical Aberration).
本发明前述光学摄像透镜组中，该第四透镜的像侧表面上光线通过的最大范围位置与光轴的垂直距离为Y42，该第四透镜的像侧表面上距离光轴为Y42的位置与相切于该透镜光轴顶点上的切面的距离为SAG42，较佳地，满足下列关系式：0.4＜SAG42/Y42＜0.7。当SAG42/Y42满足上述关系式时，可使该第四透镜的形状不会太过弯曲，除有利于透镜的制作与成型外，更有助于降低镜组中镜片组装配置所需的空间，使得镜组的配置可更为紧密。In the aforementioned optical imaging lens group of the present invention, the vertical distance between the position of the maximum range where light passes through on the image side surface of the fourth lens and the optical axis is Y42, and the distance between the position Y42 and the optical axis on the image side surface of the fourth lens is Y42. The distance of the tangent plane tangent to the vertex of the optical axis of the lens is SAG42, preferably, the following relationship is satisfied: 0.4<SAG42/Y42<0.7. When SAG42/Y42 satisfies the above relationship, the shape of the fourth lens will not be too curved, which is not only beneficial to the production and molding of the lens, but also helps to reduce the space required for the lens assembly and configuration in the lens group. So that the configuration of the mirror group can be more compact.
本发明前述光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第一透镜的焦距为f1，该第四透镜的焦距为f4，较佳地，满足下列关系式：0＜f/f1-f/f4＜1.5。当f/f1-f/f4满足上述关系式时，该第一透镜与该第四透镜的屈折力配置较为平衡，有利于降低系统的敏感度与减少像差的产生。In the aforementioned optical imaging lens group of the present invention, the focal length of the overall optical imaging lens group is f, the focal length of the first lens is f1, and the focal length of the fourth lens is f4. Preferably, the following relationship is satisfied: 0<f/ f1-f/f4<1.5. When f/f1-f/f4 satisfies the above relationship, the configuration of the refractive power of the first lens and the fourth lens is relatively balanced, which is beneficial to reduce the sensitivity of the system and reduce the generation of aberrations.
本发明前述光学摄像透镜组中，该第一透镜的色散系数为V1，该第二透镜的色散系数为V2，较佳地，满足下列关系式：30＜V1-V2＜42。当V1-V2满足上述关系式时，有利于该光学摄像透镜组中色差的修正。In the aforementioned optical imaging lens group of the present invention, the dispersion coefficient of the first lens is V1, and the dispersion coefficient of the second lens is V2. Preferably, the following relationship is satisfied: 30<V1-V2<42. When V1-V2 satisfies the above relational expression, it is beneficial to correct the chromatic aberration in the optical imaging lens group.
本发明前述光学摄像透镜组中，该第二透镜与该第三透镜在光轴上的间隔距离为T23，该第二透镜在光轴上的厚度为CT2，较佳地，满足下列关系式：0.9＜T23/CT2＜2.0。当T23/CT2满足上述关系式时，可使镜组中镜间距与厚度不至于过大或过小，除有利于镜片的组装配置，更有助于镜组空间的利用，以促进镜头的小型化。In the aforementioned optical imaging lens group of the present invention, the distance between the second lens and the third lens on the optical axis is T23, and the thickness of the second lens on the optical axis is CT2. Preferably, the following relationship is satisfied: 0.9<T23/CT2<2.0. When T23/CT2 satisfies the above relationship, the distance and thickness of the lens in the lens group will not be too large or too small, which is not only beneficial to the assembly and configuration of the lens, but also conducive to the utilization of the space of the lens group, so as to promote the miniaturization of the lens change.
本发明前述光学摄像透镜组中，该第一透镜的物侧表面至该电子感光元件在光轴上的距离为TTL，而该电子感光元件有效像素区域对角线长的一半为ImgH，较佳地，满足下列关系式：TTL/ImgH＜1.80。当TTL/ImgH满足上述关系式时，有利于维持光学摄像透镜组的小型化，以搭载于轻薄可携式的电子产品上。In the aforementioned optical imaging lens group of the present invention, the distance between the object-side surface of the first lens and the electronic photosensitive element on the optical axis is TTL, and half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, preferably Therefore, the following relational expression is satisfied: TTL/ImgH<1.80. When TTL/ImgH satisfies the above relational expression, it is beneficial to maintain the miniaturization of the optical imaging lens group so as to be mounted on thin, light and portable electronic products.
另一方面，本发明提供一种光学摄像透镜组，包含五枚具屈折力的透镜，由物侧至像侧依序为：一具正屈折力的第一透镜，其物侧表面为凸面；一具负屈折力的第二透镜；一第三透镜，其像侧表面为凹面；一具正屈折力的第四透镜，其物侧表面及像侧表面中至少有一面为非球面；及一具负屈折力的第五透镜，其像侧表面为凹面，该物侧表面及像侧表面中至少有一面为非球面；其中，该整体光学摄像透镜组的焦距为f，该第四透镜的焦距为f4，该第五透镜的焦距为f5，该第二透镜与该第三透镜在光轴上的间隔距离为T23，该第二透镜在光轴上的厚度为CT2，该光圈至该电子感光元件在光轴上的距离为SL，该第一透镜的物侧表面至该电子感光元件在光轴上的距离为TTL，满足下列关系式：1.8＜|f/f4|+|f/f5|＜3.0；0.7＜T23/CT2＜2.5；及0.7＜SL/TTL＜1.1。On the other hand, the present invention provides an optical imaging lens group, which includes five lenses with refractive power, and the order from the object side to the image side is as follows: a first lens with positive refractive power, the surface of which is convex on the object side; A second lens with negative refractive power; a third lens whose image-side surface is concave; a fourth lens with positive refractive power, at least one of its object-side surface and image-side surface is aspherical; and a The fifth lens with negative refractive power has a concave surface on the image side, and at least one of the object-side surface and the image-side surface is an aspheric surface; wherein, the focal length of the overall optical imaging lens group is f, and the fourth lens The focal length is f4, the focal length of the fifth lens is f5, the distance between the second lens and the third lens on the optical axis is T23, the thickness of the second lens on the optical axis is CT2, and the aperture to the electronic The distance of the photosensitive element on the optical axis is SL, the distance from the object-side surface of the first lens to the electronic photosensitive element on the optical axis is TTL, and the following relationship is satisfied: 1.8<|f/f4|+|f/f5 |<3.0; 0.7<T23/CT2<2.5; and 0.7<SL/TTL<1.1.
当|f/f4|+|f/f5|满足下列关系式：1.8＜|f/f4|+|f/f5|＜3.0，该第四透镜与该第五透镜的屈折力配置较为平衡，有利于降低系统的敏感度与像差的产生。When |f/f4|+|f/f5| satisfies the following relationship: 1.8<|f/f4|+|f/f5|<3.0, the refractive power configuration of the fourth lens and the fifth lens is relatively balanced, and It is beneficial to reduce the sensitivity and aberration of the system.
当T23/CT2满足下列关系式：0.7＜T23/CT2＜2.5，可使镜组中镜间距与厚度不至于过大或过小，除有利于镜片的组装配置，更有助于镜组空间的利用，以促进镜头的小型化。When T23/CT2 satisfies the following relationship: 0.7<T23/CT2<2.5, the distance and thickness of the mirrors in the mirror group will not be too large or too small, which is not only conducive to the assembly and configuration of the lenses, but also conducive to the space of the mirror group utilized to facilitate lens miniaturization.
当SL/TTL满足下列关系式：0.7＜SL/TTL＜1.1，有利于该光学摄像透镜组在远心特性与广视场角中取得良好的平衡。When SL/TTL satisfies the following relationship: 0.7<SL/TTL<1.1, it is beneficial for the optical imaging lens group to achieve a good balance between telecentricity and wide field of view.
本发明前述光学摄像透镜组中，该第四透镜具正屈折力，能有效分配该第一透镜的正屈折力，以降低系统的敏感度；该第五透镜具负屈折力，能使光学系统的主点远离成像面，有利于缩短系统的光学总长度，以维持镜头的小型化。In the aforementioned optical imaging lens group of the present invention, the fourth lens has a positive refractive power, which can effectively distribute the positive refractive power of the first lens to reduce the sensitivity of the system; the fifth lens has a negative refractive power, which can make the optical system The principal point of the lens is far away from the imaging surface, which is beneficial to shorten the total optical length of the system to maintain the miniaturization of the lens.
本发明前述光学摄像透镜组中，该第三透镜的像侧表面为凹面，有利于在增大系统的后焦距；较佳地，该第三透镜物侧表面为凸面，此时，第三透镜为一物侧为凸、像侧为凹的新月形透镜，有利于在增大系统的后焦距与降低该光学摄像透镜组的总长度中取得平衡，且可有效修正系统像差。较佳地，该第四透镜的物侧表面为凹面及像侧表面为凸面，可对于修正系统的像散较为有利。此外，较佳地，该第三透镜与第五透镜上设置有反曲点，将可更有效地压制离轴视场的光线入射于感光元件上的角度，并且进一步修正离轴视场的像差。In the aforementioned optical imaging lens group of the present invention, the image-side surface of the third lens is concave, which is beneficial to increase the back focus of the system; preferably, the object-side surface of the third lens is convex, and at this time, the third lens The crescent-shaped lens is convex on the object side and concave on the image side, which is conducive to achieving a balance between increasing the back focal length of the system and reducing the total length of the optical imaging lens group, and can effectively correct system aberrations. Preferably, the object-side surface of the fourth lens is concave and the image-side surface is convex, which is more beneficial for correcting astigmatism of the system. In addition, preferably, the third lens and the fifth lens are provided with inflection points, which can more effectively suppress the angle of light incident on the photosensitive element in the off-axis field of view, and further correct the image in the off-axis field of view. Difference.
本发明前述光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第三透镜的焦距为f3，较佳地，满足下列关系式：-0.5＜f/f3＜0.6。当f/f3满足上述关系式时，该第三透镜的屈折力较为合适，可有助于修正该第一透镜所产生的像差，且不至于使本身透镜屈折力过大，因此较有利于降低系统的敏感度；进一步，较佳地，满足下列关系式：-0.2＜f/f3＜0.5。In the aforementioned optical imaging lens group of the present invention, the focal length of the overall optical imaging lens group is f, and the focal length of the third lens is f3, preferably, the following relationship is satisfied: -0.5<f/f3<0.6. When f/f3 satisfies the above relational expression, the refractive power of the third lens is more appropriate, which can help to correct the aberration produced by the first lens, and will not make the refractive power of the lens itself too large, so it is more beneficial Reduce the sensitivity of the system; further, preferably, satisfy the following relationship: -0.2<f/f3<0.5.
本发明前述光学摄像透镜组中，该第四透镜在光轴上的厚度为CT4，该第五透镜在光轴上的厚度为CT5，较佳地，满足下列关系式：0.8＜CT4/CT5＜1.5。当CT4/CT5满足上述关系式时，可使镜组中镜间距与厚度不至于过大或过小，除有利于镜片的组装配置，更有助于镜组空间的利用，以促进镜头的小型化。In the aforementioned optical imaging lens group of the present invention, the thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5. Preferably, the following relationship is satisfied: 0.8<CT4/CT5< 1.5. When CT4/CT5 satisfies the above relationship, the distance and thickness of the lenses in the lens group will not be too large or too small, which is not only conducive to the assembly and configuration of the lenses, but also helps to utilize the space of the lens group to promote the miniaturization of the lens change.
本发明前述光学摄像透镜组中，该第四透镜的像侧表面上光线通过的最大范围位置与光轴的垂直距离为Y42，该第四透镜的像侧表面上距离光轴为Y42的位置与相切于该透镜光轴顶点上的切面的距离为SAG42，较佳地，满足下列关系式：0.4＜SAG42/Y42＜0.7。当SAG42/Y42满足上述关系式时，可使该第四透镜的形状不会太过弯曲，除有利于透镜的制作与成型外，更有助于降低镜组中镜片组装配置所需的空间，使得镜组的配置可更为紧密。In the aforementioned optical imaging lens group of the present invention, the vertical distance between the position of the maximum range where light passes through on the image side surface of the fourth lens and the optical axis is Y42, and the distance between the position Y42 and the optical axis on the image side surface of the fourth lens is Y42. The distance of the tangent plane tangent to the vertex of the optical axis of the lens is SAG42, preferably, the following relationship is satisfied: 0.4<SAG42/Y42<0.7. When SAG42/Y42 satisfies the above relationship, the shape of the fourth lens will not be too curved, which is not only beneficial to the production and molding of the lens, but also helps to reduce the space required for the lens assembly and configuration in the lens group. So that the configuration of the mirror group can be more compact.
本发明前述光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第一透镜的焦距为f1，该第四透镜的焦距为f4，较佳地，满足下列关系式：0＜f/f1-f/f4＜1.5。当f/f1-f/f4满足上述关系式时，该第一透镜与该第四透镜的屈折力配置较为平衡，有利于降低系统的敏感度与减少像差的产生。In the aforementioned optical imaging lens group of the present invention, the focal length of the overall optical imaging lens group is f, the focal length of the first lens is f1, and the focal length of the fourth lens is f4. Preferably, the following relationship is satisfied: 0<f/ f1-f/f4<1.5. When f/f1-f/f4 satisfies the above relationship, the configuration of the refractive power of the first lens and the fourth lens is relatively balanced, which is beneficial to reduce the sensitivity of the system and reduce the generation of aberrations.
本发明光学摄像透镜组中，透镜的材质可为玻璃或塑胶，若透镜的材质为玻璃，则可以增加系统屈折力配置的自由度，若透镜材质为塑胶，则可以有效降低生产成本。此外，并可在镜面上设置非球面，非球面可以容易制作成球面以外的形状，获得较多的控制变数，用以消减像差，进而缩减透镜使用的数目，因此可以有效降低本发明光学摄像透镜组的总长度。In the optical imaging lens group of the present invention, the material of the lens can be glass or plastic. If the material of the lens is glass, the degree of freedom in the configuration of the refractive power of the system can be increased. If the material of the lens is plastic, the production cost can be effectively reduced. In addition, an aspheric surface can be arranged on the mirror surface, and the aspheric surface can be easily made into a shape other than a spherical surface to obtain more control variables for reducing aberrations and reducing the number of lenses used. The total length of the lens group.
本发明光学摄像透镜组中，若透镜表面为凸面，则表示该透镜表面在近轴处为凸面；若透镜表面为凹面，则表示该透镜表面在近轴处为凹面。In the optical imaging lens group of the present invention, if the lens surface is convex, it means that the lens surface is convex at the paraxial position; if the lens surface is concave, it means that the lens surface is concave at the paraxial position.
本发明光学摄像透镜组将通过以下具体实施例配合附图予以详细说明。The optical imaging lens group of the present invention will be described in detail through the following specific embodiments with accompanying drawings.
第一实施例：First embodiment:
本发明第一实施例的光学系统示意图请参阅图1A，第一实施例的像差曲线请参阅图1B。第一实施例的光学摄像透镜组主要由五枚透镜构成，由物侧至像侧依序包含：Please refer to FIG. 1A for the schematic diagram of the optical system of the first embodiment of the present invention, and please refer to FIG. 1B for the aberration curve of the first embodiment. The optical imaging lens group of the first embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:
一具正屈折力的第一透镜110，其物侧表面111及像侧表面112皆为凸面，其材质为塑胶，该第一透镜的物侧表面111及像侧表面112皆为非球面；A first lens 110 with positive refractive power, its object-side surface 111 and image-side surface 112 are both convex, and its material is plastic, and the object-side surface 111 and image-side surface 112 of the first lens are both aspherical;
一具负屈折力的第二透镜120，其物侧表面121及像侧表面122皆为凹面，其材质为塑胶，该第二透镜的物侧表面121及像侧表面122皆为非球面；A second lens 120 with negative refractive power, its object-side surface 121 and image-side surface 122 are both concave, and its material is plastic, and the object-side surface 121 and image-side surface 122 of the second lens are both aspherical;
一具正屈折力的第三透镜130，其物侧表面131为凸面及像侧表面132为凹面，其材质为塑胶，该第三透镜的物侧表面131及像侧表面132皆为非球面；A third lens 130 with positive refractive power, its object-side surface 131 is convex and image-side surface 132 is concave, its material is plastic, the object-side surface 131 and image-side surface 132 of the third lens are both aspherical;
一具正屈折力的第四透镜140，其物侧表面141为凹面及像侧表面142为凸面，其材质为塑胶，该第四透镜的物侧表面141及像侧表面142皆为非球面；及A fourth lens 140 with positive refractive power, its object-side surface 141 is concave and image-side surface 142 is convex, its material is plastic, the object-side surface 141 and image-side surface 142 of the fourth lens are both aspherical; and
一具负屈折力的第五透镜150，其物侧表面151及像侧表面152皆为凹面，其材质为塑胶，该第五透镜的物侧表面151及像侧表面152皆为非球面，并且该第五透镜的像侧表面152上设置有至少一个反曲点；A fifth lens 150 with negative refractive power, its object-side surface 151 and image-side surface 152 are both concave, and its material is plastic, the object-side surface 151 and image-side surface 152 of the fifth lens are all aspherical, and At least one inflection point is arranged on the image-side surface 152 of the fifth lens;
其中，该光学摄像透镜组另设置有一光圈100置于该第一透镜110与该第二透镜120之间；Wherein, the optical imaging lens group is further provided with an aperture 100 placed between the first lens 110 and the second lens 120;
另包含有一红外线滤光片(IR-filter)170置于该第五透镜的像侧表面152与一成像面160之间；该红外线滤光片170的材质为玻璃且其不影响本发明光学摄像透镜组的焦距。In addition, an infrared filter (IR-filter) 170 is placed between the image side surface 152 of the fifth lens and an imaging surface 160; the material of the infrared filter 170 is glass and it does not affect the optical imaging of the present invention. The focal length of the lens group.
上述的非球面曲线的方程式表示如下：The equation of the above-mentioned aspheric curve is expressed as follows:
其中：in:
X：非球面上距离光轴为Y的点，其与相切于非球面光轴上顶点的切面的相对高度；X: The point on the aspheric surface whose distance from the optical axis is Y, and its relative height to the tangent plane tangent to the vertex on the aspheric optical axis;
Y：非球面曲线上的点与光轴的距离；Y: the distance between the point on the aspheric curve and the optical axis;
k：锥面系数；k: cone coefficient;
Ai：第i阶非球面系数。Ai: i-th order aspheric coefficient.
第一实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，其关系式为：f＝5.80(毫米)。In the optical imaging lens group of the first embodiment, the focal length of the overall optical imaging lens group is f, and its relationship is: f=5.80 (mm).
第一实施例光学摄像透镜组中，整体光学摄像透镜组的光圈值(f-number)为Fno，其关系式为：Fno＝2.46。In the optical imaging lens group of the first embodiment, the aperture value (f-number) of the overall optical imaging lens group is Fno, and its relational expression is: Fno=2.46.
第一实施例光学摄像透镜组中，整体光学摄像透镜组中最大视角的一半为HFOV，其关系式为：HFOV＝33.5(度)。In the optical imaging lens group of the first embodiment, half of the maximum viewing angle of the overall optical imaging lens group is HFOV, and its relational expression is: HFOV=33.5 (degrees).
第一实施例光学摄像透镜组中，该第一透镜110的色散系数为V1，该第二透镜120的色散系数为V2，其关系式为：V1-V2＝32.5。In the optical imaging lens group of the first embodiment, the dispersion coefficient of the first lens 110 is V1, and the dispersion coefficient of the second lens 120 is V2, and the relationship is: V1-V2=32.5.
第一实施例光学摄像透镜组中，该第二透镜120与该第三透镜130在光轴上的间隔距离为T23，该第二透镜120在光轴上的厚度为CT2，其关系式为：T23/CT2＝0.95。In the optical imaging lens group of the first embodiment, the distance between the second lens 120 and the third lens 130 on the optical axis is T23, and the thickness of the second lens 120 on the optical axis is CT2, and the relationship is: T23/CT2=0.95.
第一实施例光学摄像透镜组中，该第四透镜140在光轴上的厚度为CT4，该第五透镜150在光轴上的厚度为CT5，其关系式为：CT4/CT5＝1.17。In the optical imaging lens group of the first embodiment, the thickness of the fourth lens 140 on the optical axis is CT4, the thickness of the fifth lens 150 on the optical axis is CT5, and the relationship is: CT4/CT5=1.17.
第一实施例光学摄像透镜组中，该第一透镜的物侧表面11 1曲率半径为R1，该第一透镜的像侧表面112曲率半径为R2，其关系式为：R1/R2＝-0.08。In the first embodiment optical imaging lens group, the object-side surface 111 of the first lens has a radius of curvature of R1, and the image-side surface 112 of the first lens has a radius of curvature of R2, and its relational expression is: R1/R2=-0.08 .
第一实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第三透镜130的焦距为f3，其关系式为：f/f3＝0.32。In the optical imaging lens group of the first embodiment, the focal length of the entire optical imaging lens group is f, the focal length of the third lens 130 is f3, and the relational expression is: f/f3=0.32.
第一实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第一透镜110的焦距为f1，该第四透镜140的焦距为f4，其关系式为：f/f1-f/f4＝0.73。In the first embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, the focal length of the first lens 110 is f1, the focal length of the fourth lens 140 is f4, and the relationship is: f/f1-f /f4=0.73.
第一实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第四透镜140的焦距为f4，该第五透镜150的焦距为f5，其关系式为：|f/f4|+|f/f5|＝2.38。In the first embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, the focal length of the fourth lens 140 is f4, and the focal length of the fifth lens 150 is f5, and the relationship is: |f/f4| +|f/f5|=2.38.
第一实施例光学摄像透镜组中，该第四透镜的像侧表面142上光线通过的最大范围位置与光轴的垂直距离为Y42，该第四透镜的像侧表面142上距离光轴为Y42的位置与相切于该透镜光轴顶点上的切面的距离为SAG42，其关系式为：SAG42/Y42＝0.56。In the optical imaging lens group of the first embodiment, the vertical distance between the position of the maximum range where light passes through on the image side surface 142 of the fourth lens and the optical axis is Y42, and the distance from the optical axis on the image side surface 142 of the fourth lens is Y42 The distance between the position of and the tangent plane tangent to the apex of the optical axis of the lens is SAG42, and its relational expression is: SAG42/Y42=0.56.
第一实施例光学摄像透镜组中，该光圈100至该电子感光元件在光轴上的距离为SL，该第一透镜的物侧表面111至该电子感光元件在光轴上的距离为TTL，其关系式为：SL/TTL＝0.84。In the first embodiment of the optical imaging lens group, the distance from the aperture 100 to the electronic photosensitive element on the optical axis is SL, the distance from the object-side surface 111 of the first lens to the electronic photosensitive element on the optical axis is TTL, The relational formula is: SL/TTL=0.84.
第一实施例光学摄像透镜组中，该第一透镜的物侧表面111至该电子感光元件在光轴上的距离为TTL，而该电子感光元件有效像素区域对角线长的一半为ImgH，其关系式为：TTL/ImgH＝1.64。In the first embodiment of the optical imaging lens group, the distance between the object-side surface 111 of the first lens and the electronic photosensitive element on the optical axis is TTL, and half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, Its relational formula is: TTL/ImgH=1.64.
第一实施例详细的光学数据如图6表一所示，其非球面数据如图7A表二A及图7B表二B所示，其中曲率半径、厚度及焦距的单位为mm，HFOV定义为最大视角的一半。The detailed optical data of the first embodiment is shown in Table 1 of Figure 6, and its aspheric data is shown in Table 2 A of Figure 7A and Table 2 B of Figure 7B, wherein the units of radius of curvature, thickness and focal length are mm, and HFOV is defined as half of the maximum viewing angle.
第二实施例：Second embodiment:
本发明第二实施例的光学系统示意图请参阅图2A，第二实施例的像差曲线请参阅图2B。第二实施例的光学摄像透镜组主要由五枚透镜构成，由物侧至像侧依序包含：Please refer to FIG. 2A for the schematic diagram of the optical system of the second embodiment of the present invention, and please refer to FIG. 2B for the aberration curve of the second embodiment. The optical imaging lens group of the second embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side:
一具正屈折力的第一透镜210，其物侧表面211为凸面及像侧表面212为凹面，其材质为塑胶，该第一透镜的物侧表面211及像侧表面212皆为非球面；A first lens 210 with positive refractive power, its object-side surface 211 is convex and image-side surface 212 is concave, its material is plastic, the object-side surface 211 and image-side surface 212 of the first lens are both aspherical;
一具负屈折力的第二透镜220，其物侧表面221为凸面及像侧表面222为凹面，其材质为塑胶，该第二透镜的物侧表面221及像侧表面222皆为非球面；A second lens 220 with negative refractive power, its object side surface 221 is convex and image side surface 222 is concave, its material is plastic, the object side surface 221 and image side surface 222 of the second lens are both aspherical;
一具负屈折力的第三透镜230，其物侧表面231为凸面及像侧表面232为凹面，其材质为塑胶，该第三透镜的物侧表面231及像侧表面232皆为非球面；A third lens 230 with negative refractive power, its object side surface 231 is convex and image side surface 232 is concave, its material is plastic, the object side surface 231 and image side surface 232 of the third lens are both aspherical;
一具正屈折力的第四透镜240，其物侧表面241为凹面及像侧表面242为凸面，其材质为塑胶，该第四透镜的物侧表面241及像侧表面242皆为非球面；及A fourth lens 240 with positive refractive power, its object-side surface 241 is concave and image-side surface 242 is convex, its material is plastic, the object-side surface 241 and image-side surface 242 of the fourth lens are both aspherical; and
一具负屈折力的第五透镜250，其物侧表面251为凸面及像侧表面252为凹面，其材质为塑胶，该第五透镜的物侧表面251及像侧表面252皆为非球面，并且该第五透镜的像侧表面252上设置有至少一个反曲点；A fifth lens 250 with negative refractive power, its object-side surface 251 is convex and image-side surface 252 is concave, its material is plastic, the object-side surface 251 and image-side surface 252 of the fifth lens are both aspherical surfaces, And the image side surface 252 of the fifth lens is provided with at least one inflection point;
其中，该光学摄像透镜组另设置有一光圈200置于该被摄物与该第一透镜210之间；Wherein, the optical imaging lens group is further provided with an aperture 200 placed between the subject and the first lens 210;
另包含有一红外线滤光片270置于该第五透镜的像侧表面252与一成像面260之间；该红外线滤光片270的材质为玻璃且其不影响本发明光学摄像透镜组的焦距。It also includes an infrared filter 270 placed between the image-side surface 252 of the fifth lens and an imaging surface 260; the infrared filter 270 is made of glass and does not affect the focal length of the optical imaging lens group of the present invention.
第二实施例非球面曲线方程式的表示式如同第一实施例的型式。The expression of the aspheric curve equation of the second embodiment is the same as that of the first embodiment.
第二实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，其关系式为：f＝5.60(毫米)。In the second embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, and its relationship is: f=5.60 (mm).
第二实施例光学摄像透镜组中，整体光学摄像透镜组的光圈值为Fno，其关系式为：Fno＝2.65。In the second embodiment of the optical imaging lens group, the aperture value of the overall optical imaging lens group is Fno, and its relationship is: Fno=2.65.
第二实施例光学摄像透镜组中，整体光学摄像透镜组中最大视角的一半为HFOV，其关系式为：HFOV＝34.5(度)。In the second embodiment of the optical imaging lens group, half of the maximum viewing angle of the overall optical imaging lens group is HFOV, and its relationship is: HFOV=34.5 (degrees).
第二实施例光学摄像透镜组中，该第一透镜210的色散系数为V1，该第二透镜220的色散系数为V2，其关系式为：V1-V2＝34.5。In the second embodiment of the optical imaging lens group, the dispersion coefficient of the first lens 210 is V1, and the dispersion coefficient of the second lens 220 is V2, and the relationship is: V1-V2=34.5.
第二实施例光学摄像透镜组中，该第二透镜220与该第三透镜230在光轴上的间隔距离为T23，该第二透镜220在光轴上的厚度为CT2，其关系式为：T23/CT2＝1.99。In the second embodiment of the optical imaging lens group, the distance between the second lens 220 and the third lens 230 on the optical axis is T23, the thickness of the second lens 220 on the optical axis is CT2, and the relationship is: T23/CT2=1.99.
第二实施例光学摄像透镜组中，该第四透镜240在光轴上的厚度为CT4，该第五透镜250在光轴上的厚度为CT5，其关系式为：CT4/CT5＝1.03。In the optical imaging lens group of the second embodiment, the thickness of the fourth lens 240 on the optical axis is CT4, and the thickness of the fifth lens 250 on the optical axis is CT5, and the relationship is: CT4/CT5=1.03.
第二实施例光学摄像透镜组中，该第一透镜的物侧表面211曲率半径为R1，该第一透镜的像侧表面212曲率半径为R2，其关系式为：R1/R2＝0.17。In the second embodiment of the optical imaging lens group, the object-side surface 211 of the first lens has a radius of curvature of R1, and the image-side surface 212 of the first lens has a radius of curvature of R2, and the relationship is: R1/R2=0.17.
第二实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第三透镜230的焦距为f3，其关系式为：f/f3＝-0.12。In the optical imaging lens group of the second embodiment, the focal length of the entire optical imaging lens group is f, the focal length of the third lens 230 is f3, and the relationship is: f/f3=-0.12.
第二实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第一透镜210的焦距为f1，该第四透镜240的焦距为f4，其关系式为：f/f1-f/f4＝0.28。In the second embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, the focal length of the first lens 210 is f1, the focal length of the fourth lens 240 is f4, and the relationship is: f/f1-f /f4=0.28.
第二实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第四透镜240的焦距为f4，该第五透镜250的焦距为f5，其关系式为：|f/f4|+|f/f5|＝2.13。In the second embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, the focal length of the fourth lens 240 is f4, the focal length of the fifth lens 250 is f5, and the relationship is: |f/f4| +|f/f5|=2.13.
第二实施例光学摄像透镜组中，该第四透镜的像侧表面242上光线通过的最大范围位置与光轴的垂直距离为Y42，该第四透镜的像侧表面242上距离光轴为Y42的位置与相切于该透镜光轴顶点上的切面的距离为SAG42，其关系式为：SAG42/Y42＝0.59。In the second embodiment of the optical imaging lens group, the vertical distance between the position of the maximum range where light passes through on the image side surface 242 of the fourth lens and the optical axis is Y42, and the distance from the optical axis on the image side surface 242 of the fourth lens is Y42 The distance between the position of and the tangent plane tangent to the apex of the optical axis of the lens is SAG42, and its relational expression is: SAG42/Y42=0.59.
第二实施例光学摄像透镜组中，该光圈200至该电子感光元件在光轴上的距离为SL，该第一透镜的物侧表面211至该电子感光元件在光轴上的距离为TTL，其关系式为：SL/TTL＝0.95In the second embodiment of the optical imaging lens group, the distance from the aperture 200 to the electronic photosensitive element on the optical axis is SL, the distance from the object-side surface 211 of the first lens to the electronic photosensitive element on the optical axis is TTL, Its relationship is: SL/TTL＝0.95
第二实施例光学摄像透镜组中，该第一透镜的物侧表面211至该电子感光元件在光轴上的距离为TTL，而该电子感光元件有效像素区域对角线长的一半为ImgH，其关系式为：TTL/ImgH＝1.67。In the second embodiment of the optical imaging lens group, the distance between the object-side surface 211 of the first lens and the electronic photosensitive element on the optical axis is TTL, and half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, Its relational formula is: TTL/ImgH=1.67.
第二实施例详细的光学数据如图8表三所示，其非球面数据如图9A表四A及图9B表四B所示，其中曲率半径、厚度及焦距的单位为mm，HFOV定义为最大视角的一半。The detailed optical data of the second embodiment is shown in Table 3 of Figure 8, and its aspheric surface data are shown in Table 4 A of Figure 9A and Table 4 B of Figure 9B, wherein the units of radius of curvature, thickness and focal length are mm, and HFOV is defined as half of the maximum viewing angle.
第三实施例：Third embodiment:
本发明第三实施例的光学系统示意图请参阅图3A，第三实施例的像差曲线请参阅图3B。第三实施例的光学摄像透镜组主要由五枚透镜构成，由物侧至像侧依序包含：Please refer to FIG. 3A for the schematic diagram of the optical system of the third embodiment of the present invention, and please refer to FIG. 3B for the aberration curve of the third embodiment. The optical imaging lens group of the third embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:
一具正屈折力的第一透镜310，其物侧表面311及像侧表面312皆为凸面，其材质为塑胶，该第一透镜的物侧表面311及像侧表面312皆为非球面；A first lens 310 with positive refractive power, its object-side surface 311 and image-side surface 312 are both convex, and its material is plastic, and the object-side surface 311 and image-side surface 312 of the first lens are both aspherical;
一具负屈折力的第二透镜320，其物侧表面321及像侧表面322皆为凹面，其材质为塑胶，该第二透镜的物侧表面321及像侧表面322皆为非球面；A second lens 320 with negative refractive power, its object-side surface 321 and image-side surface 322 are both concave, and its material is plastic, and the object-side surface 321 and image-side surface 322 of the second lens are both aspherical;
一具正屈折力的第三透镜330，其物侧表面331为凸面及像侧表面332为凹面，其材质为塑胶，该第三透镜的物侧表面331及像侧表面332皆为非球面；A third lens 330 with positive refractive power, its object-side surface 331 is convex and image-side surface 332 is concave, its material is plastic, the object-side surface 331 and image-side surface 332 of the third lens are both aspherical;
一具正屈折力的第四透镜340，其物侧表面341为凹面及像侧表面342为凸面，其材质为塑胶，该第四透镜的物侧表面341及像侧表面342皆为非球面；及A fourth lens 340 with positive refractive power, its object side surface 341 is concave and image side surface 342 is convex, its material is plastic, the object side surface 341 and image side surface 342 of the fourth lens are both aspherical; and
一具负屈折力的第五透镜350，其物侧表面351为凸面及像侧表面352为凹面，其材质为塑胶，该第五透镜的物侧表面351及像侧表面352皆为非球面，并且该第五透镜的像侧表面352上设置有至少一个反曲点；A fifth lens 350 with negative refractive power, its object side surface 351 is convex and image side surface 352 is concave, its material is plastic, the object side surface 351 and image side surface 352 of the fifth lens are aspheric, And the image-side surface 352 of the fifth lens is provided with at least one inflection point;
其中，该光学摄像透镜组另设置有一光圈300置于该第一透镜310与该第二透镜320之间；Wherein, the optical imaging lens group is further provided with an aperture 300 placed between the first lens 310 and the second lens 320;
另包含有一红外线滤光片370置于该第五透镜的像侧表面352与一成像面360之间；该红外线滤光片370的材质为玻璃且其不影响本发明光学摄像透镜组的焦距。It also includes an infrared filter 370 placed between the image-side surface 352 of the fifth lens and an imaging surface 360; the infrared filter 370 is made of glass and does not affect the focal length of the optical imaging lens group of the present invention.
第三实施例非球面曲线方程式的表示式如同第一实施例的型式。The expression of the aspheric curve equation of the third embodiment is the same as that of the first embodiment.
第三实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，其关系式为：f＝5.80(毫米)。In the third embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, and its relationship is: f=5.80 (mm).
第三实施例光学摄像透镜组中，整体光学摄像透镜组的光圈值为Fno，其关系式为：Fno＝2.45。In the third embodiment of the optical imaging lens group, the aperture value of the overall optical imaging lens group is Fno, and its relational expression is: Fno=2.45.
第三实施例光学摄像透镜组中，整体光学摄像透镜组中最大视角的一半为HFOV，其关系式为：HFOV＝33.5(度)。In the third embodiment of the optical imaging lens group, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relational expression is: HFOV=33.5 (degrees).
第三实施例光学摄像透镜组中，该第一透镜3 10的色散系数为V1，该第二透镜320的色散系数为V2，其关系式为：V1-V2＝32.5。In the third embodiment of the optical imaging lens group, the dispersion coefficient of the first lens 310 is V1, and the dispersion coefficient of the second lens 320 is V2, and the relational expression is: V1-V2=32.5.
第三实施例光学摄像透镜组中，该第二透镜320与该第三透镜330在光轴上的间隔距离为T23，该第二透镜320在光轴上的厚度为CT2，其关系式为：T23/CT2＝0.93。In the third embodiment of the optical imaging lens group, the distance between the second lens 320 and the third lens 330 on the optical axis is T23, the thickness of the second lens 320 on the optical axis is CT2, and the relationship is: T23/CT2=0.93.
第三实施例光学摄像透镜组中，该第四透镜340在光轴上的厚度为CT4，该第五透镜350在光轴上的厚度为CT5，其关系式为：CT4/CT5＝1.48。In the optical imaging lens group of the third embodiment, the thickness of the fourth lens 340 on the optical axis is CT4, and the thickness of the fifth lens 350 on the optical axis is CT5, and the relationship is: CT4/CT5=1.48.
第三实施例光学摄像透镜组中，该第一透镜的物侧表面311曲率半径为R1，该第一透镜的像侧表面312曲率半径为R2，其关系式为：R1/R2＝-0.04。In the third embodiment of the optical imaging lens group, the object-side surface 311 of the first lens has a radius of curvature of R1, and the image-side surface 312 of the first lens has a radius of curvature of R2, and the relationship is: R1/R2=-0.04.
第三实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第三透镜330的焦距为f3，其关系式为：f/f3＝0.30。In the optical imaging lens group of the third embodiment, the focal length of the entire optical imaging lens group is f, the focal length of the third lens 330 is f3, and the relationship is: f/f3=0.30.
第三实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第一透镜310的焦距为f1，该第四透镜340的焦距为f4，其关系式为：f/f1-f/f4＝0.77。In the third embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, the focal length of the first lens 310 is f1, the focal length of the fourth lens 340 is f4, and the relationship is: f/f1-f /f4=0.77.
第三实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第四透镜340的焦距为f4，该第五透镜350的焦距为f5，其关系式为：|f/f4|+|f/f5|＝2.05。In the third embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, the focal length of the fourth lens 340 is f4, the focal length of the fifth lens 350 is f5, and the relationship is: |f/f4| +|f/f5|=2.05.
第三实施例光学摄像透镜组中，该第四透镜的像侧表面342上光线通过的最大范围位置与光轴的垂直距离为Y42，该第四透镜的像侧表面342上距离光轴为Y42的位置与相切于该透镜光轴顶点上的切面的距离为SAG42，其关系式为：SAG42/Y42＝0.56。In the third embodiment of the optical imaging lens group, the vertical distance between the position of the maximum range where light passes through on the image side surface 342 of the fourth lens and the optical axis is Y42, and the distance from the optical axis on the image side surface 342 of the fourth lens is Y42 The distance between the position of and the tangent plane tangent to the apex of the optical axis of the lens is SAG42, and its relational expression is: SAG42/Y42=0.56.
第三实施例光学摄像透镜组中，该光圈300至该电子感光元件在光轴上的距离为SL，该第一透镜的物侧表面311至该电子感光元件在光轴上的距离为TTL，其关系式为：SL/TTL＝0.84In the third embodiment of the optical imaging lens group, the distance from the aperture 300 to the electronic photosensitive element on the optical axis is SL, the distance from the object-side surface 311 of the first lens to the electronic photosensitive element on the optical axis is TTL, Its relationship is: SL/TTL＝0.84
第三实施例光学摄像透镜组中，该第一透镜的物侧表面311至该电子感光元件在光轴上的距离为TTL，而该电子感光元件有效像素区域对角线长的一半为ImgH，其关系式为：TTL/ImgH＝1.65。In the third embodiment of the optical imaging lens group, the distance between the object-side surface 311 of the first lens and the electronic photosensitive element on the optical axis is TTL, and half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, Its relational formula is: TTL/ImgH=1.65.
第三实施例详细的光学数据如图10表五所示，其非球面数据如图11A表六A及图11B表六B所示，其中曲率半径、厚度及焦距的单位为mm，HFOV定义为最大视角的一半。The detailed optical data of the third embodiment is shown in Table 5 of Figure 10, and its aspheric surface data are shown in Table 6 A of Figure 11A and Table 6 B of Figure 11B, wherein the units of radius of curvature, thickness and focal length are mm, and HFOV is defined as half of the maximum viewing angle.
第四实施例：Fourth embodiment:
本发明第四实施例的光学系统示意图请参阅图4A，第四实施例的像差曲线请参阅图4B。第四实施例的光学摄像透镜组主要由五枚透镜构成，由物侧至像侧依序包含：Please refer to FIG. 4A for the schematic diagram of the optical system of the fourth embodiment of the present invention, and please refer to FIG. 4B for the aberration curve of the fourth embodiment. The optical imaging lens group of the fourth embodiment is mainly composed of five lenses, which sequentially include from the object side to the image side:
一具正屈折力的第一透镜410，其物侧表面411及像侧表面412皆为凸面，其材质为塑胶，该第一透镜的物侧表面411及像侧表面412皆为非球面；A first lens 410 with positive refractive power, its object-side surface 411 and image-side surface 412 are both convex, and its material is plastic, and the object-side surface 411 and image-side surface 412 of the first lens are both aspherical;
一具负屈折力的第二透镜420，其物侧表面421及像侧表面422皆为凹面，其材质为塑胶，该第二透镜的物侧表面421及像侧表面422皆为非球面；A second lens 420 with negative refractive power, its object-side surface 421 and image-side surface 422 are both concave, and its material is plastic, and the object-side surface 421 and image-side surface 422 of the second lens are both aspherical;
一具正屈折力的第三透镜430，其物侧表面431为凸面及像侧表面432为凹面，其材质为塑胶，该第三透镜的物侧表面431及像侧表面432皆为非球面；A third lens 430 with positive refractive power, its object-side surface 431 is convex and image-side surface 432 is concave, its material is plastic, and the object-side surface 431 and image-side surface 432 of the third lens are both aspherical;
一具正屈折力的第四透镜440，其物侧表面441为凹面及像侧表面442为凸面，其材质为塑胶，该第四透镜的物侧表面441及像侧表面442皆为非球面；及A fourth lens 440 with positive refractive power, its object-side surface 441 is concave and image-side surface 442 is convex, its material is plastic, the object-side surface 441 and image-side surface 442 of the fourth lens are both aspherical; and
一具负屈折力的第五透镜450，其物侧表面451及像侧表面452皆为凹面，其材质为塑胶，该第五透镜的物侧表面451及像侧表面452皆为非球面，并且该第五透镜的像侧表面452上设置有至少一个反曲点；A fifth lens 450 with negative refractive power, its object-side surface 451 and image-side surface 452 are both concave, and its material is plastic, the object-side surface 451 and image-side surface 452 of the fifth lens are all aspherical, and At least one inflection point is arranged on the image-side surface 452 of the fifth lens;
其中，该光学摄像透镜组另设置有一光圈400置于该第一透镜410与该第二透镜420之间；Wherein, the optical imaging lens group is further provided with an aperture 400 placed between the first lens 410 and the second lens 420;
另包含有一红外线滤光片470置于该第五透镜的像侧表面452与一成像面460之间；该红外线滤光片470的材质为玻璃且其不影响本发明光学摄像透镜组的焦距。An infrared filter 470 is also included between the image-side surface 452 of the fifth lens and an imaging surface 460; the infrared filter 470 is made of glass and does not affect the focal length of the optical imaging lens group of the present invention.
第四实施例非球面曲线方程式的表示式如同第一实施例的型式。The expression of the aspheric curve equation of the fourth embodiment is the same as that of the first embodiment.
第四实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，其关系式为：f＝5.81(毫米)。In the fourth embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, and its relationship is: f=5.81 (mm).
第四实施例光学摄像透镜组中，整体光学摄像透镜组的光圈值为Fno，其关系式为：Fno＝2.55。In the fourth embodiment, in the optical imaging lens group, the aperture value of the overall optical imaging lens group is Fno, and its relational expression is: Fno=2.55.
第四实施例光学摄像透镜组中，整体光学摄像透镜组中最大视角的一半为HFOV，其关系式为：HFOV＝33.5(度)。In the fourth embodiment, in the optical imaging lens group, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relational expression is: HFOV=33.5 (degrees).
第四实施例光学摄像透镜组中，该第一透镜410的色散系数为V1，该第二透镜420的色散系数为V2，其关系式为：V1-V2＝32.1。In the fourth embodiment of the optical imaging lens group, the dispersion coefficient of the first lens 410 is V1, and the dispersion coefficient of the second lens 420 is V2, and the relationship is: V1-V2=32.1.
第四实施例光学摄像透镜组中，该第二透镜420与该第三透镜430在光轴上的间隔距离为T23，该第二透镜420在光轴上的厚度为CT2，其关系式为：T23/CT2＝0.92。In the fourth embodiment of the optical imaging lens group, the distance between the second lens 420 and the third lens 430 on the optical axis is T23, the thickness of the second lens 420 on the optical axis is CT2, and the relationship is: T23/CT2=0.92.
第四实施例光学摄像透镜组中，该第四透镜440在光轴上的厚度为CT4，该第五透镜450在光轴上的厚度为CT5，其关系式为：CT4/CT5＝1.06。In the optical imaging lens group of the fourth embodiment, the thickness of the fourth lens 440 on the optical axis is CT4, and the thickness of the fifth lens 450 on the optical axis is CT5, and the relationship is: CT4/CT5=1.06.
第四实施例光学摄像透镜组中，该第一透镜的物侧表面411曲率半径为R1，该第一透镜的像侧表面412曲率半径为R2，其关系式为：R1/R2＝-0.26。In the fourth embodiment of the optical imaging lens group, the object-side surface 411 of the first lens has a radius of curvature of R1, and the image-side surface 412 of the first lens has a radius of curvature of R2, and the relationship is: R1/R2=-0.26.
第四实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第三透镜430的焦距为f3，其关系式为：f/f3＝0.39。In the fourth embodiment of the optical imaging lens group, the focal length of the entire optical imaging lens group is f, the focal length of the third lens 430 is f3, and the relationship is: f/f3=0.39.
第四实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第一透镜410的焦距为f1，该第四透镜440的焦距为f4，其关系式为：f/f1-f/f4＝0.90。In the fourth embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, the focal length of the first lens 410 is f1, the focal length of the fourth lens 440 is f4, and the relationship is: f/f1-f /f4=0.90.
第四实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第四透镜440的焦距为f4，该第五透镜450的焦距为f5，其关系式为：|f/f4|+|f/f5|＝2.55。In the fourth embodiment of the optical imaging lens group, the focal length of the overall optical imaging lens group is f, the focal length of the fourth lens 440 is f4, the focal length of the fifth lens 450 is f5, and the relationship is: |f/f4| +|f/f5|=2.55.
第四实施例光学摄像透镜组中，该第四透镜的像侧表面442上光线通过的最大范围位置与光轴的垂直距离为Y42，该第四透镜的像侧表面442上距离光轴为Y42的位置与相切于该透镜光轴顶点上的切面的距离为SAG42，其关系式为：SAG42/Y42＝0.54。In the fourth embodiment of the optical imaging lens group, the vertical distance between the position of the maximum range where light passes through on the image-side surface 442 of the fourth lens and the optical axis is Y42, and the distance from the optical axis on the image-side surface 442 of the fourth lens is Y42. The distance between the position of and the tangent plane tangent to the apex of the optical axis of the lens is SAG42, and its relational expression is: SAG42/Y42=0.54.
第四实施例光学摄像透镜组中，该光圈400至该电子感光元件在光轴上的距离为SL，该第一透镜的物侧表面411至该电子感光元件在光轴上的距离为TTL，其关系式为：SL/TTL＝0.83In the fourth embodiment of the optical imaging lens group, the distance between the aperture 400 and the electronic photosensitive element on the optical axis is SL, the distance from the object-side surface 411 of the first lens to the electronic photosensitive element on the optical axis is TTL, Its relationship is: SL/TTL＝0.83
第四实施例光学摄像透镜组中，该第一透镜的物侧表面411至该电子感光元件在光轴上的距离为TTL，而该电子感光元件有效像素区域对角线长的一半为ImgH，其关系式为：TTL/ImgH＝1.65。In the fourth embodiment of the optical imaging lens group, the distance between the object-side surface 411 of the first lens and the electronic photosensitive element on the optical axis is TTL, and half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, Its relational formula is: TTL/ImgH=1.65.
第四实施例详细的光学数据如图12表七所示，其非球面数据如图13A表八A及图13B表八B所示，其中曲率半径、厚度及焦距的单位为mm，HFOV定义为最大视角的一半。The detailed optical data of the fourth embodiment is shown in Table 7 of Figure 12, and its aspheric surface data are shown in Table 8 A of Figure 13A and Table 8 B of Figure 13B, wherein the units of radius of curvature, thickness and focal length are mm, and HFOV is defined as half of the maximum viewing angle.
第五实施例：Fifth embodiment:
本发明第五实施例的光学系统示意图请参阅图5A，第五实施例的像差曲线请参阅图5B。第五实施例的光学摄像透镜组主要由五枚透镜构成，由物侧至像侧依序包含：Please refer to FIG. 5A for the schematic diagram of the optical system of the fifth embodiment of the present invention, and please refer to FIG. 5B for the aberration curve of the fifth embodiment. The optical imaging lens group of the fifth embodiment is mainly composed of five lenses, which include sequentially from the object side to the image side:
一具正屈折力的第一透镜510，其物侧表面511为凸面及像侧表面512为凹面，其材质为塑胶，该第一透镜的物侧表面511及像侧表面512皆为非球面；A first lens 510 with positive refractive power, its object-side surface 511 is convex and image-side surface 512 is concave, its material is plastic, and the object-side surface 511 and image-side surface 512 of the first lens are both aspherical;
一具负屈折力的第二透镜520，其物侧表面521及像侧表面522皆为凹面，其材质为塑胶，该第二透镜的物侧表面521及像侧表面522皆为非球面；A second lens 520 with negative refractive power, its object-side surface 521 and image-side surface 522 are both concave, and its material is plastic, and the object-side surface 521 and image-side surface 522 of the second lens are both aspherical;
一具正屈折力的第三透镜530，其物侧表面531为凸面及像侧表面532为凹面，其材质为塑胶，该第三透镜的物侧表面531及像侧表面532皆为非球面；A third lens 530 with positive refractive power, its object-side surface 531 is convex and image-side surface 532 is concave, its material is plastic, the object-side surface 531 and image-side surface 532 of the third lens are both aspherical;
一具正屈折力的第四透镜540，其物侧表面541为凹面及像侧表面542为凸面，其材质为塑胶，该第四透镜的物侧表面541及像侧表面542皆为非球面；及A fourth lens 540 with positive refractive power, its object side surface 541 is concave and image side surface 542 is convex, its material is plastic, the object side surface 541 and image side surface 542 of the fourth lens are both aspherical; and
一具负屈折力的第五透镜550，其物侧表面551及像侧表面552皆为凹面，其材质为塑胶，该第五透镜的物侧表面551及像侧表面552皆为非球面，并且该第五透镜的像侧表面552上设置有至少一个反曲点；A fifth lens 550 with negative refractive power, its object-side surface 551 and image-side surface 552 are both concave, and its material is plastic, the object-side surface 551 and image-side surface 552 of the fifth lens are all aspherical, and At least one inflection point is arranged on the image-side surface 552 of the fifth lens;
其中，该光学摄像透镜组另设置有一光圈500置于被摄物与该第一透镜510之间；Wherein, the optical imaging lens group is further provided with an aperture 500 placed between the subject and the first lens 510;
另包含有一红外线滤光片570置于该第五透镜的像侧表面552与一成像面560之间；该红外线滤光片570的材质为玻璃且其不影响本发明光学摄像透镜组的焦距。An infrared filter 570 is also included between the image-side surface 552 of the fifth lens and an imaging surface 560; the infrared filter 570 is made of glass and does not affect the focal length of the optical imaging lens group of the present invention.
第五实施例非球面曲线方程式的表示式如同第一实施例的型式。The expression of the aspheric curve equation of the fifth embodiment is the same as that of the first embodiment.
第五实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，其关系式为：f＝5.59(毫米)。In the optical imaging lens group of the fifth embodiment, the focal length of the overall optical imaging lens group is f, and its relationship is: f=5.59 (mm).
第五实施例光学摄像透镜组中，整体光学摄像透镜组的光圈值为Fno，其关系式为：Fno＝2.80。In the fifth embodiment, in the optical imaging lens group, the aperture value of the overall optical imaging lens group is Fno, and its relational expression is: Fno=2.80.
第五实施例光学摄像透镜组中，整体光学摄像透镜组中最大视角的一半为HFOV，其关系式为：HFOV＝33.4(度)。In the fifth embodiment, in the optical imaging lens group, half of the maximum viewing angle in the overall optical imaging lens group is HFOV, and its relationship is: HFOV=33.4 (degrees).
第五实施例光学摄像透镜组中，该第一透镜510的色散系数为V1，该第二透镜520的色散系数为V2，其关系式为：V1-V2＝34.5。In the optical imaging lens group of the fifth embodiment, the dispersion coefficient of the first lens 510 is V1, and the dispersion coefficient of the second lens 520 is V2, and the relationship is: V1-V2=34.5.
第五实施例光学摄像透镜组中，该第二透镜520与该第三透镜530在光轴上的间隔距离为T23，该第二透镜520在光轴上的厚度为CT2，其关系式为：T23/CT2＝1.16。In the optical imaging lens group of the fifth embodiment, the distance between the second lens 520 and the third lens 530 on the optical axis is T23, and the thickness of the second lens 520 on the optical axis is CT2, and the relationship is: T23/CT2=1.16.
第五实施例光学摄像透镜组中，该第四透镜540在光轴上的厚度为CT4，该第五透镜550在光轴上的厚度为CT5，其关系式为：CT4/CT5＝1.17。In the optical imaging lens group of the fifth embodiment, the thickness of the fourth lens 540 on the optical axis is CT4, and the thickness of the fifth lens 550 on the optical axis is CT5, and the relationship is: CT4/CT5=1.17.
第五实施例光学摄像透镜组中，该第一透镜的物侧表面511曲率半径为R1，该第一透镜的像侧表面512曲率半径为R2，其关系式为：R1/R2＝0.24。In the optical imaging lens group of the fifth embodiment, the curvature radius of the object-side surface 511 of the first lens is R1, and the curvature radius of the image-side surface 512 of the first lens is R2, and the relationship is: R1/R2=0.24.
第五实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第三透镜530的焦距为f3，其关系式为：f/f3＝0.44。In the optical imaging lens group of the fifth embodiment, the focal length of the entire optical imaging lens group is f, the focal length of the third lens 530 is f3, and the relationship is: f/f3=0.44.
第五实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第一透镜510的焦距为f1，该第四透镜540的焦距为f4，其关系式为：f/f1-f/f4＝0.30。In the optical imaging lens group of the fifth embodiment, the focal length of the overall optical imaging lens group is f, the focal length of the first lens 510 is f1, the focal length of the fourth lens 540 is f4, and the relationship is: f/f1-f /f4=0.30.
第五实施例光学摄像透镜组中，整体光学摄像透镜组的焦距为f，该第四透镜540的焦距为f4，该第五透镜550的焦距为f5，其关系式为：|f/f4|+|f/f5|＝2.64。In the optical imaging lens group of the fifth embodiment, the focal length of the overall optical imaging lens group is f, the focal length of the fourth lens 540 is f4, and the focal length of the fifth lens 550 is f5, and the relationship is: |f/f4| +|f/f5|=2.64.
第五实施例光学摄像透镜组中，该第四透镜的像侧表面542上光线通过的最大范围位置与光轴的垂直距离为Y42，该第四透镜的像侧表面542上距离光轴为Y42的位置与相切于该透镜光轴顶点上的切面的距离为SAG42，其关系式为：SAG42/Y42＝0.58。In the optical imaging lens group of the fifth embodiment, the vertical distance between the position of the maximum range where light passes through on the image-side surface 542 of the fourth lens and the optical axis is Y42, and the distance from the optical axis on the image-side surface 542 of the fourth lens is Y42. The distance between the position of and the tangent plane tangent to the apex of the optical axis of the lens is SAG42, and its relational expression is: SAG42/Y42=0.58.
第五实施例光学摄像透镜组中，该光圈500至该电子感光元件在光轴上的距离为SL，该第一透镜的物侧表面511至该电子感光元件在光轴上的距离为TTL，其关系式为：SL/TTL＝0.95In the fifth embodiment of the optical imaging lens group, the distance from the aperture 500 to the electronic photosensitive element on the optical axis is SL, the distance from the object-side surface 511 of the first lens to the electronic photosensitive element on the optical axis is TTL, Its relationship is: SL/TTL＝0.95
第五实施例光学摄像透镜组中，该第一透镜的物侧表面511至该电子感光元件在光轴上的距离为TTL，而该电子感光元件有效像素区域对角线长的一半为ImgH，其关系式为：TTL/ImgH＝1.67。In the fifth embodiment, in the optical imaging lens group, the distance between the object-side surface 511 of the first lens and the electronic photosensitive element on the optical axis is TTL, and half of the diagonal length of the effective pixel area of the electronic photosensitive element is ImgH, Its relational formula is: TTL/ImgH=1.67.
第五实施例详细的光学数据如图14表九所示，其非球面数据如图15表十所示，其中曲率半径、厚度及焦距的单位为mm，HFOV定义为最大视角的一半。The detailed optical data of the fifth embodiment is shown in Table 9 of Figure 14, and its aspheric surface data is shown in Table 10 of Figure 15, where the unit of curvature radius, thickness and focal length is mm, and HFOV is defined as half of the maximum viewing angle.
表一至表十(分别对应图6至图15)所示为本发明光学摄像透镜组实施例的不同数值变化表，然本发明各个实施例的数值变化皆属实验所得，即使使用不同数值，相同结构的产品仍应属于本发明的保护范畴，故以上的说明所描述及图式仅做为例示性，非用以限制本发明的申请专利范围。表十一(对应图16)为各个实施例对应本发明相关关系式的数值数据。Tables 1 to 10 (respectively corresponding to Fig. 6 to Fig. 15) show the table of different numerical changes of the embodiments of the optical imaging lens group of the present invention, but the numerical changes of the various embodiments of the present invention are all experimental results, even if different numerical values are used, the same The structural products should still belong to the scope of protection of the present invention, so the above descriptions and drawings are only for illustration, and are not intended to limit the patent scope of the present invention. Table 11 (corresponding to FIG. 16 ) is the numerical data of each embodiment corresponding to the correlation relation of the present invention.
以上所述的具体实施例，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.
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| CN201410489666.8ACN104238090B (en) | 2010-11-19 | 2010-11-19 | Optical camera lens group |
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