CN205679845U - A vehicle-mounted high-definition fisheye lens - Google Patents

A vehicle-mounted high-definition fisheye lens Download PDF

Info

Publication number
CN205679845U
CN205679845U CN201620625756.XU CN201620625756U CN205679845U CN 205679845 U CN205679845 U CN 205679845U CN 201620625756 U CN201620625756 U CN 201620625756U CN 205679845 U CN205679845 U CN 205679845U
Authority
CN
China
Prior art keywords
lens
vehicle
mounted high
definition
definition fisheye
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201620625756.XU
Other languages
Chinese (zh)
Inventor
薛雷涛
黄声齐
王学宝
邹文彬
冯建设
肖明志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Union Optech Co Ltd
Original Assignee
Union Optech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Union Optech Co Ltd filed Critical Union Optech Co Ltd
Priority to CN201620625756.XU priority Critical patent/CN205679845U/en
Application granted granted Critical
Publication of CN205679845U publication Critical patent/CN205679845U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Lenses (AREA)

Abstract

The utility model discloses an on-vehicle high definition fisheye camera lens is equipped with from the thing side to picture side in proper order: the front lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from an object side to an image side, the focal power of the first lens and the focal power of the second lens are negative, the focal power of the third lens is positive, the rear lens group comprises a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from the object side to the image side, the focal power of the fourth lens and the focal power of the sixth lens are positive, the focal power of the fifth lens is negative, and the third lens, the fourth lens, the fifth lens and the sixth lens are plastic aspheric lenses. The utility model discloses the angle of vision is big, and is with low costs, definition height, logical light ability reinforce.

Description

一种车载高清鱼眼镜头A vehicle-mounted high-definition fisheye lens

【技术领域】【Technical field】

本实用新型涉及一种车载高清鱼眼镜头。The utility model relates to a vehicle-mounted high-definition fisheye lens.

【背景技术】【Background technique】

目前行车纠纷、交通事故等普遍存在,为了确保行车安全,很多汽车都加装车载镜头。但是现在一般的车载镜头的视场范围有限、清晰度较差,而且通光量较弱,所以现在的车载镜头已经不能满足社会需求。At present, driving disputes and traffic accidents are common. In order to ensure driving safety, many cars are equipped with on-board cameras. However, the current general vehicle lens has a limited field of view, poor definition, and weak light transmission, so the current vehicle lens can no longer meet social needs.

因此,本实用新型正是基于上述现有技术存在的缺点而提出的。Therefore, the utility model proposes based on the shortcoming that the above-mentioned prior art exists.

【实用新型内容】【Content of utility model】

本实用新型目的是克服了现有技术的不足,提供一种视场角大,成本低、清晰度高、通光能力强的车载高清鱼眼镜头。The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a vehicle-mounted high-definition fisheye lens with a large field of view, low cost, high definition and strong light transmission ability.

本实用新型是通过以下技术方案实现的:The utility model is achieved through the following technical solutions:

一种车载高清鱼眼镜头,其特征在于:从物侧至像侧依次设有:具有正光焦度的前透镜群组100、光阑200、具有正光焦度的后透镜群组300和成像面400,所述的前透镜群组100包括从物侧至像侧依次设置的第一透镜1、第二透镜2和第三透镜3,所述的第一透镜1和第二透镜2的光焦度为负,所述的第三透镜3的光焦度为正,所述的后透镜群组300包括从物侧至像侧依次设置的第四透镜4、第五透镜5和第六透镜6,所述的第四透镜4和第六透镜6的光焦度为正,所述的第五透镜5的光焦度为负,所述的第三透镜3、第四透镜4、第五透镜5和第六透镜6均为塑胶非球面透镜。A vehicle-mounted high-definition fisheye lens is characterized in that: from the object side to the image side, there are sequentially provided with: a front lens group 100 with positive refractive power, a diaphragm 200, a rear lens group 300 with positive refractive power, and an imaging surface 400. The front lens group 100 includes a first lens 1, a second lens 2, and a third lens 3 arranged sequentially from the object side to the image side, and the optical focal points of the first lens 1 and the second lens 2 are power is negative, the refractive power of the third lens 3 is positive, and the rear lens group 300 includes the fourth lens 4, the fifth lens 5 and the sixth lens 6 arranged in sequence from the object side to the image side , the refractive power of the fourth lens 4 and the sixth lens 6 is positive, the refractive power of the fifth lens 5 is negative, the third lens 3, the fourth lens 4, the fifth lens 5 and the sixth lens 6 are plastic aspherical lenses.

如上所述的车载高清鱼眼镜头,其特征在于:所述的第一透镜1为弯月形透镜,并且其朝向物侧的表面为凸面、朝向像侧的表面为凹面;所述的第二透镜2的两个表面均为凹面;所述的第三透镜3朝向物侧的表面为凹面、朝向像侧的表面为凸面。The vehicle-mounted high-definition fisheye lens as described above is characterized in that: the first lens 1 is a meniscus lens, and its surface facing the object side is convex, and the surface facing the image side is concave; Both surfaces of the lens 2 are concave; the surface of the third lens 3 facing the object side is concave, and the surface facing the image side is convex.

如上所述的车载高清鱼眼镜头,其特征在于:所述的第四透镜4的两个表面均为凸面;所述的第五透镜5的两个表面均为凹面;所述的第六透镜6的两个表面均为凸面。The vehicle-mounted high-definition fisheye lens as described above is characterized in that: both surfaces of the fourth lens 4 are convex; both surfaces of the fifth lens 5 are concave; the sixth lens Both surfaces of 6 are convex.

如上所述的车载高清鱼眼镜头,其特征在于:所述的前透镜群组100和后透镜群组300满足如下表达式:3.14≤Fbefore≤9.38,2.35≤Fbefore/F≤7.8,3.5≤Fafter≤5.12,61≤Fafter/F≤4.25,0.62≤Fbefore/Fafter≤2.68;其中,Fbefore为前透镜群组100的焦距,Fafter为后透镜群组300的焦距,F为车载高清鱼眼镜头的总焦距。The vehicle-mounted high-definition fisheye lens described above is characterized in that: the front lens group 100 and the rear lens group 300 satisfy the following expressions: 3.14≤F before ≤9.38, 2.35≤F before /F≤7.8, 3.5 ≤F after ≤5.12, 61≤F after /F≤4.25, 0.62≤F before /F after ≤2.68; where, F before is the focal length of the front lens group 100, F after is the focal length of the rear lens group 300, F is the total focal length of the vehicle-mounted high-definition fisheye lens.

如上所述的车载高清鱼眼镜头,其特征在于:所述的第一透镜1、第二透镜2和第三透镜3满足如下表达式:1.7≤Nd1≤1.9,56≤Vd1≤65,1.6≤Nd2≤1.8,50≤Vd2≤55,1.51≤Nd3≤1.55,50≤Vd3≤57;其中,Nd1、Nd2、Nd3分别为第一透镜1、第二透镜2和第三透镜3的折射率,Vd1、Vd2、Vd3分别为第一透镜1、第二透镜2和第三透镜3的阿贝数。The vehicle-mounted high-definition fisheye lens described above is characterized in that: the first lens 1, the second lens 2 and the third lens 3 satisfy the following expressions: 1.7≤Nd 1 ≤1.9, 56≤Vd 1 ≤65, 1.6≤Nd 2 ≤1.8, 50≤Vd 2 ≤55, 1.51≤Nd 3 ≤1.55, 50≤Vd 3 ≤57; wherein, Nd 1 , Nd 2 , and Nd 3 are the first lens 1, the second lens 2 and the The refractive indices of the third lens 3 , Vd 1 , Vd 2 , Vd 3 are the Abbe numbers of the first lens 1 , the second lens 2 and the third lens 3 respectively.

如上所述的车载高清鱼眼镜头,其特征在于:所述的车载高清鱼眼镜头满足如下表达式:0.72≤T2≤1.3,0.65≤T1/T2≤1.97,0.25≤(T1+T2+T3)/TTL≤0.44;其中,T1、T2、T3分别为第一透镜1、第二透镜2和第三透镜3的中心厚度,TTL为车载高清鱼眼镜头的总长。The vehicle-mounted high-definition fisheye lens described above is characterized in that: the vehicle-mounted high-definition fisheye lens satisfies the following expressions: 0.72≤T2≤1.3, 0.65≤T1/T2≤1.97, 0.25≤(T1+T2+T3) /TTL≤0.44; where T1, T2, and T3 are the central thicknesses of the first lens 1, the second lens 2, and the third lens 3, respectively, and TTL is the total length of the vehicle-mounted high-definition fisheye lens.

如上所述的车载高清鱼眼镜头,其特征在于:所述的车载高清鱼眼镜头满足下述公式:2W≥210°,8.8≤TTL/F≤11.17;其中,2W为车载高清鱼眼镜头的视场角,TTL为车载高清鱼眼镜头的总长,F为车载高清鱼眼镜头的总焦距。The vehicle-mounted high-definition fisheye lens as described above is characterized in that: the vehicle-mounted high-definition fisheye lens satisfies the following formula: 2W≥210°, 8.8≤TTL/F≤11.17; wherein, 2W is the value of the vehicle-mounted high-definition fisheye lens Field of view, TTL is the total length of the car HD fisheye lens, F is the total focal length of the car HD fisheye lens.

如上所述的车载高清鱼眼镜头,其特征在于:所述的第一透镜1和第二透镜2为玻璃球面透镜,所述的第六透镜6与成像面400之间设有滤光片500。The vehicle-mounted high-definition fisheye lens as described above is characterized in that: the first lens 1 and the second lens 2 are glass spherical lenses, and a filter 500 is provided between the sixth lens 6 and the imaging surface 400 .

如上所述的车载高清鱼眼镜头,其特征在于:所述的第三透镜3、第四透镜4、第五透镜5和第六透镜6的非球面表面形状满足如下方程:The vehicle-mounted high-definition fisheye lens as described above is characterized in that: the aspheric surface shapes of the third lens 3, the fourth lens 4, the fifth lens 5 and the sixth lens 6 satisfy the following equation:

ZZ == cycy 22 11 ++ 11 -- (( 11 ++ kk )) cc 22 ythe y 22 ++ aa 11 ythe y 22 ++ aa 22 ythe y 44 ++ aa 33 ythe y 66 ++ aa 44 ythe y 88 ++ aa 55 ythe y 1010 ++ aa 66 ythe y 1212 ++ aa 77 ythe y 1414 ++ aa 88 ythe y 1616 ,,

在公式中,参数c为半径所对应的曲率,y为径向坐标其单位和透镜长度单位相同,k为圆锥二次曲线系数;当k系数小于-1时,透镜的面形曲线为双曲线,当k系数等于-1时,透镜的面形曲线为抛物线;当k系数介于-1到0之间时,透镜的面形曲线为椭圆,当k系数等于0时,透镜的面形曲线为圆形,当k系数大于0时,透镜的面形曲线为扁圆形;a1至a8分别表示各径向坐标所对应的系数。In the formula, the parameter c is the curvature corresponding to the radius, y is the radial coordinate, and its unit is the same as that of the lens length, and k is the coefficient of the conic conic curve; when the k coefficient is less than -1, the surface curve of the lens is a hyperbola , when the coefficient k is equal to -1, the surface curve of the lens is a parabola; when the coefficient k is between -1 and 0, the surface curve of the lens is an ellipse; when the coefficient k is equal to 0, the surface curve of the lens is a circle, and when the k coefficient is greater than 0, the surface curve of the lens is oblate; a 1 to a 8 represent the coefficients corresponding to each radial coordinate.

与现有技术相比,本实用新型有如下优点:Compared with the prior art, the utility model has the following advantages:

1、本实用新型从物侧至像侧依次设有具有正光焦度的前透镜群组、光阑和具有正光焦度的后透镜群组。这种结构使得本实用新型能够成为最大视场角达到220°的超大广角、大的相对孔径和四百万像素的高清镜头,也能保证在-40℃~+85℃的温度范围内仍具有较高的清晰度,特别适用于环境恶劣车载环境。1. The utility model is sequentially provided with a front lens group with positive refractive power, a diaphragm and a rear lens group with positive refractive power from the object side to the image side. This structure enables the utility model to become a super wide-angle lens with a maximum viewing angle of 220°, a large relative aperture, and a high-definition lens with 4 million pixels, and it can also ensure that it still has a high-definition lens in the temperature range of -40°C to +85°C. High definition, especially suitable for harsh environment vehicle environment.

2、本实用新型能够有效将宽的视场角汇聚进车载镜头光学系统,并降低车载镜头光学系统的公差敏感性,提高镜头的光学性能。2. The utility model can effectively converge a wide field of view into the vehicle lens optical system, reduce the tolerance sensitivity of the vehicle lens optical system, and improve the optical performance of the lens.

3、本实用新型有效矫正系统轴向色差过大,且能保证第一透镜有较小的口径,这对镜头小型化更有益处。3. The utility model effectively corrects the excessive axial chromatic aberration of the system, and can ensure that the first lens has a smaller aperture, which is more beneficial to the miniaturization of the lens.

4、本实用新型有效缩短镜头总长,使得车载镜头光学系统有更大的孔径,光圈数达到F2.0。4. The utility model effectively shortens the total length of the lens, so that the optical system of the vehicle lens has a larger aperture, and the aperture number reaches F2.0.

5、本实用新型的滤光片能过滤一部分光线,以减少杂光和光斑等,使图像色彩亮丽和锐利的同时具有良好的色彩还原性;第三透镜、第四透镜、第五透镜和第六透镜为塑胶非球面透镜,从而实现较高的分辨率能匹配400万像素光学传感器,使本实用新型的锐利度、色彩还原性得到显著提升。5. The optical filter of the present invention can filter part of the light to reduce stray light and light spots, etc., so that the image color is bright and sharp and has good color reproduction; the third lens, the fourth lens, the fifth lens and the third lens The six lenses are plastic aspheric lenses, so as to achieve higher resolution and match the 4 million pixel optical sensor, so that the sharpness and color reproduction of the utility model are significantly improved.

6、本实用新型视场角大、成本低、清晰度高、通光能力强,适合推广应用。6. The utility model has a large field of view, low cost, high definition, and strong light transmission ability, and is suitable for popularization and application.

【附图说明】【Description of drawings】

图1是本实用新型示意图;Fig. 1 is a schematic diagram of the utility model;

图2是本实用新型的光路示意图。Fig. 2 is a schematic diagram of the optical path of the present invention.

【具体实施方式】【detailed description】

下面结合附图对本实用新型作进一步描述:Below in conjunction with accompanying drawing, the utility model will be further described:

一种车载高清鱼眼镜头,从物侧至像侧依次设有:具有正光焦度的前透镜群组100、光阑200、具有正光焦度的后透镜群组300和成像面400,所述的前透镜群组100包括从物侧至像侧依次设置的第一透镜1、第二透镜2和第三透镜3,所述的第一透镜1和第二透镜2的光焦度为负,所述的第三透镜3的光焦度为正,所述的后透镜群组300包括从物侧至像侧依次设置的第四透镜4、第五透镜5和第六透镜6,所述的第四透镜4和第六透镜6的光焦度为正,所述的第五透镜5的光焦度为负,所述的第三透镜3、第四透镜4、第五透镜5和第六透镜6均为塑胶非球面透镜。这种结构使得本实用新型能够成为最大视场角达到220°的超大广角、大的相对孔径和四百万像素的高清镜头,也能保证在-40℃~+85℃的温度范围内仍具有较高的清晰度,特别适用于环境恶劣车载环境。第三透镜3、第四透镜4、第五透镜5和第六透镜6为塑胶非球面透镜,一方面减少镜片数量和质量,并降低成本,另一方面实现较高的分辨率,能够匹配400万像素光学传感器,使本实用新型的锐利度、色彩还原性得到显著提升。A vehicle-mounted high-definition fisheye lens is provided in sequence from the object side to the image side: a front lens group 100 with positive refractive power, a diaphragm 200, a rear lens group 300 with positive refractive power, and an imaging surface 400. The front lens group 100 includes a first lens 1, a second lens 2 and a third lens 3 arranged in sequence from the object side to the image side, the refractive power of the first lens 1 and the second lens 2 is negative, The refractive power of the third lens 3 is positive, and the rear lens group 300 includes a fourth lens 4, a fifth lens 5 and a sixth lens 6 arranged in sequence from the object side to the image side, and the said The refractive power of the fourth lens 4 and the sixth lens 6 is positive, the refractive power of the fifth lens 5 is negative, and the third lens 3, the fourth lens 4, the fifth lens 5 and the sixth lens The lenses 6 are all plastic aspherical lenses. This structure enables the utility model to become a super wide-angle lens with a maximum viewing angle of 220°, a large relative aperture, and a high-definition lens with 4 million pixels, and it can also ensure that it still has a high-definition lens in the temperature range of -40°C to +85°C. High definition, especially suitable for harsh environment vehicle environment. The third lens 3, the fourth lens 4, the fifth lens 5, and the sixth lens 6 are plastic aspheric lenses, which reduce the number and quality of the lenses on the one hand, and reduce the cost. On the other hand, they can achieve higher resolution and can match 400 The 10,000-pixel optical sensor significantly improves the sharpness and color reproduction of the utility model.

所述的第一透镜1为弯月形透镜,并且其朝向物侧的表面为凸面、朝向像侧的表面为凹面;所述的第二透镜2的两个表面均为凹面;所述的第三透镜3朝向物侧的表面为凹面、朝向像侧的表面为凸面。The first lens 1 is a meniscus lens, and its surface towards the object side is convex, and the surface towards the image side is concave; both surfaces of the second lens 2 are concave; the second lens 2 is concave; The surface of the three lenses 3 facing the object side is concave, and the surface facing the image side is convex.

所述的第四透镜4的两个表面均为凸面;所述的第五透镜5的两个表面均为凹面;所述的第六透镜6的两个表面均为凸面。Both surfaces of the fourth lens 4 are convex; both surfaces of the fifth lens 5 are concave; and both surfaces of the sixth lens 6 are convex.

所述的第一透镜1和第二透镜2为玻璃球面透镜,所述的第六透镜6与成像面400之间设有滤光片500。鱼眼镜头的第一透镜1采用玻璃镜片,能有效保护镜头在使用过程中防止刮伤,也能使镜头抵抗恶劣环境的变化影响。滤光片500能过滤一部分光线,以减少杂光和光斑等,使图像色彩亮丽和锐利的同时具有良好的色彩还原性。The first lens 1 and the second lens 2 are glass spherical lenses, and a filter 500 is provided between the sixth lens 6 and the imaging surface 400 . The first lens 1 of the fisheye lens adopts a glass lens, which can effectively protect the lens from being scratched during use, and can also make the lens resist changes in harsh environments. The filter 500 can filter a part of light to reduce stray light and light spots, etc., so that the color of the image is bright and sharp and has good color reproduction.

所述的前透镜群组100和后透镜群组300满足如下表达式:3.14≤Fbefore≤9.38,2.35≤Fbefore/F≤7.8,3.5≤Fafter≤5.12,61≤Fafter/F≤4.25,0.62≤Fbefore/Fafter≤2.68;其中,Fbefore为前透镜群组100的焦距,Fafter为后透镜群组300的焦距,F为车载高清鱼眼镜头的总焦距。满足上述表达式的焦距分配能够有效将宽的视场角汇聚进鱼眼镜头光学系统,并降低光学系统的公差敏感性,提高光学系统的相对亮度。The front lens group 100 and the rear lens group 300 satisfy the following expressions: 3.14≤F before ≤9.38, 2.35≤F before /F≤7.8, 3.5≤F after ≤5.12, 61≤F after /F≤4.25 , 0.62≤F before /F after ≤2.68; wherein, F before is the focal length of the front lens group 100, F after is the focal length of the rear lens group 300, and F is the total focal length of the vehicle-mounted high-definition fisheye lens. The focal length allocation that satisfies the above expression can effectively converge a wide field of view into the fisheye lens optical system, reduce the tolerance sensitivity of the optical system, and improve the relative brightness of the optical system.

所述的第一透镜1、第二透镜2和第三透镜3满足如下表达式:1.7≤Nd1≤1.9,56≤Vd1≤65,1.6≤Nd2≤1.8,50≤Vd2≤55,1.51≤Nd3≤1.55,50≤Vd3≤57;其中,Nd1、Nd2、Nd3分别为第一透镜1、第二透镜2和第三透镜3的折射率,Vd1、Vd2、Vd3分别为第一透镜1、第二透镜2和第三透镜3的阿贝数。第一透镜1、第二透镜2和第三透镜3的折射率和阿贝数满足上述表达式,能够有效矫正鱼眼镜头光学系统轴向色差过大,且能保证第一透镜1有较小的口径,这对镜头小型化更有益处。The first lens 1, the second lens 2 and the third lens 3 satisfy the following expressions: 1.7≤Nd 1 ≤1.9, 56≤Vd 1 ≤65, 1.6≤Nd 2 ≤1.8, 50≤Vd 2 ≤55, 1.51≤Nd 3 ≤1.55, 50≤Vd 3 ≤57; wherein, Nd 1 , Nd 2 , and Nd 3 are the refractive indices of the first lens 1, the second lens 2, and the third lens 3, respectively, and Vd 1 , Vd 2 , Vd 3 is the Abbe number of the first lens 1 , the second lens 2 and the third lens 3 respectively. The refractive index and Abbe number of the first lens 1, the second lens 2 and the third lens 3 satisfy the above expression, which can effectively correct the excessive axial chromatic aberration of the fisheye lens optical system, and can ensure that the first lens 1 has a small caliber, which is more beneficial to lens miniaturization.

所述的车载高清鱼眼镜头满足如下表达式:0.72≤T2≤1.3,0.65≤T1/T2≤1.97,0.25≤(T1+T2+T3)/TTL≤0.44;其中,T1、T2、T3分别为第一透镜1、第二透镜2和第三透镜3的中心厚度,TTL为车载高清鱼眼镜头的总长。因此,能够有效缩短镜头总长,使得车载镜头光学系统有更大的孔径,光圈数达到F2.0。The vehicle-mounted high-definition fisheye lens satisfies the following expressions: 0.72≤T2≤1.3, 0.65≤T1/T2≤1.97, 0.25≤(T1+T2+T3)/TTL≤0.44; wherein, T1, T2, and T3 are respectively The central thickness of the first lens 1, the second lens 2 and the third lens 3, TTL is the total length of the vehicle-mounted high-definition fisheye lens. Therefore, the total length of the lens can be effectively shortened, so that the vehicle lens optical system has a larger aperture, and the aperture number reaches F2.0.

所述的车载高清鱼眼镜头满足下述公式:2W≥210°,8.8≤TTL/F≤11.17;其中,2W为车载高清鱼眼镜头的视场角,TTL为车载高清鱼眼镜头的总长,F为车载高清鱼眼镜头的总焦距。因此,鱼眼镜头的光学性能得到提升,清晰度高,通光能力强。The vehicle-mounted high-definition fisheye lens satisfies the following formula: 2W≥210°, 8.8≤TTL/F≤11.17; wherein, 2W is the field of view of the vehicle-mounted high-definition fisheye lens, and TTL is the total length of the vehicle-mounted high-definition fisheye lens, F is the total focal length of the car HD fisheye lens. Therefore, the optical performance of the fisheye lens is improved, with high definition and strong light transmission ability.

所述的第三透镜3、第四透镜4、第五透镜5和第六透镜6的非球面表面形状满足如下方程:The aspherical surface shapes of the third lens 3, the fourth lens 4, the fifth lens 5 and the sixth lens 6 satisfy the following equation:

ZZ == cycy 22 11 ++ 11 -- (( 11 ++ kk )) cc 22 ythe y 22 ++ aa 11 ythe y 22 ++ aa 22 ythe y 44 ++ aa 33 ythe y 66 ++ aa 44 ythe y 88 ++ aa 55 ythe y 1010 ++ aa 66 ythe y 1212 ++ aa 77 ythe y 1414 ++ aa 88 ythe y 1616 ,,

在公式中,参数c为半径所对应的曲率,y为径向坐标其单位和透镜长度单位相同,k为圆锥二次曲线系数;当k系数小于-1时,透镜的面形曲线为双曲线,当k系数等于-1时,透镜的面形曲线为抛物线;当k系数介于-1到0之间时,透镜的面形曲线为椭圆,当k系数等于0时,透镜的面形曲线为圆形,当k系数大于0时,透镜的面形曲线为扁圆形;a1至a8分别表示各径向坐标所对应的系数。In the formula, the parameter c is the curvature corresponding to the radius, y is the radial coordinate, and its unit is the same as that of the lens length, and k is the coefficient of the conic conic curve; when the k coefficient is less than -1, the surface curve of the lens is a hyperbola , when the coefficient k is equal to -1, the surface curve of the lens is a parabola; when the coefficient k is between -1 and 0, the surface curve of the lens is an ellipse; when the coefficient k is equal to 0, the surface curve of the lens is a circle, and when the k coefficient is greater than 0, the surface curve of the lens is oblate; a 1 to a 8 represent the coefficients corresponding to each radial coordinate.

Claims (9)

1.一种车载高清鱼眼镜头,其特征在于:从物侧至像侧依次设有:具有正光焦度的前透镜群组(100)、光阑(200)、具有正光焦度的后透镜群组(300)和成像面(400),所述的前透镜群组(100)包括从物侧至像侧依次设置的第一透镜(1)、第二透镜(2)和第三透镜(3),所述的第一透镜(1)和第二透镜(2)的光焦度为负,所述的第三透镜(3)的光焦度为正,所述的后透镜群组(300)包括从物侧至像侧依次设置的第四透镜(4)、第五透镜(5)和第六透镜(6),所述的第四透镜(4)和第六透镜(6)的光焦度为正,所述的第五透镜(5)的光焦度为负,所述的第三透镜(3)、第四透镜(4)、第五透镜(5)和第六透镜(6)均为塑胶非球面透镜。1. A vehicle-mounted high-definition fisheye lens, characterized in that: from the object side to the image side, there are successively provided with: a front lens group (100) with positive refractive power, a diaphragm (200), and a rear lens with positive refractive power group (300) and imaging surface (400), the front lens group (100) includes a first lens (1), a second lens (2) and a third lens ( 3), the refractive power of the first lens (1) and the second lens (2) is negative, the refractive power of the third lens (3) is positive, and the rear lens group ( 300) includes a fourth lens (4), a fifth lens (5) and a sixth lens (6) arranged in sequence from the object side to the image side, and the fourth lens (4) and the sixth lens (6) The refractive power is positive, the refractive power of the fifth lens (5) is negative, and the third lens (3), the fourth lens (4), the fifth lens (5) and the sixth lens ( 6) All are plastic aspheric lenses. 2.根据权利要求1所述的车载高清鱼眼镜头,其特征在于:所述的第一透镜(1)为弯月形透镜,并且其朝向物侧的表面为凸面、朝向像侧的表面为凹面;所述的第二透镜(2)的两个表面均为凹面;所述的第三透镜(3)朝向物侧的表面为凹面、朝向像侧的表面为凸面。2. The vehicle-mounted high-definition fisheye lens according to claim 1, characterized in that: the first lens (1) is a meniscus lens, and its surface toward the object side is a convex surface, and the surface toward the image side is Concave surface; both surfaces of the second lens (2) are concave; the surface of the third lens (3) facing the object side is concave, and the surface facing the image side is convex. 3.根据权利要求2所述的车载高清鱼眼镜头,其特征在于:所述的第四透镜(4)的两个表面均为凸面;所述的第五透镜(5)的两个表面均为凹面;所述的第六透镜(6)的两个表面均为凸面。3. The vehicle-mounted high-definition fisheye lens according to claim 2, characterized in that: both surfaces of the fourth lens (4) are convex; both surfaces of the fifth lens (5) are convex. It is concave; both surfaces of the sixth lens (6) are convex. 4.根据权利要求1或2或3所述的车载高清鱼眼镜头,其特征在于:所述的前透镜群组(100)和后透镜群组(300)满足如下表达式:3.14≤Fbefore≤9.38,2.35≤Fbefore/F≤7.8,3.5≤Fafter≤5.12,61≤Fafter/F≤4.25,0.62≤Fbefore/Fafter≤2.68;其中,Fbefore为前透镜群组(100)的焦距,Fafter为后透镜群组(300)的焦距,F为车载高清鱼眼镜头的总焦距。4. The vehicle-mounted high-definition fisheye lens according to claim 1, 2 or 3, characterized in that: the front lens group (100) and the rear lens group (300) satisfy the following expression: 3.14≤F before ≤9.38, 2.35≤F before /F≤7.8, 3.5≤F after ≤5.12, 61≤F after /F≤4.25, 0.62≤F before /F after ≤2.68; where, F before is the front lens group (100) The focal length of , F after is the focal length of the rear lens group (300), and F is the total focal length of the vehicle-mounted high-definition fisheye lens. 5.根据权利要求4所述的车载高清鱼眼镜头,其特征在于:所述的第一透镜(1)、第二透镜(2)和第三透镜(3)满足如下表达式:1.7≤Nd1≤1.9,56≤Vd1≤65,1.6≤Nd2≤1.8,50≤Vd2≤55,1.51≤Nd3≤1.55,50≤Vd3≤57;其中,Nd1、Nd2、Nd3分别为第一透镜(1)、第二透镜(2)和第三透镜(3)的折射率,Vd1、Vd2、Vd3分别为第一透镜(1)、第二透镜(2)和第三透镜(3)的阿贝数。5. The vehicle-mounted high-definition fisheye lens according to claim 4, characterized in that: the first lens (1), the second lens (2) and the third lens (3) satisfy the following expression: 1.7≤Nd 1 ≤1.9, 56≤Vd 1 ≤65, 1.6≤Nd 2 ≤1.8, 50≤Vd 2 ≤55, 1.51≤Nd 3 ≤1.55, 50≤Vd 3 ≤57; where Nd 1 , Nd 2 , Nd 3 is the refractive index of the first lens (1), the second lens (2) and the third lens (3), Vd 1 , Vd 2 , Vd 3 are the first lens (1), the second lens (2) and the third lens respectively The Abbe number of the three lenses (3). 6.根据权利要求5所述的车载高清鱼眼镜头,其特征在于:所述的车载高清鱼眼镜头满足如下表达式:0.72≤T2≤1.3,0.65≤T1/T2≤1.97,0.25≤(T1+T2+T3)/TTL≤0.44;其中,T1、T2、T3分别为第一透镜(1)、第二透镜(2)和第三透镜(3)的中心厚度,TTL为车载高清鱼眼镜头的总长。6. The vehicle-mounted high-definition fisheye lens according to claim 5, characterized in that: the vehicle-mounted high-definition fisheye lens satisfies the following expressions: 0.72≤T2≤1.3, 0.65≤T1/T2≤1.97, 0.25≤(T1 +T2+T3)/TTL≤0.44; among them, T1, T2, T3 are the center thicknesses of the first lens (1), the second lens (2) and the third lens (3) respectively, and TTL is the vehicle-mounted high-definition fisheye lens total length. 7.根据权利要求6所述的车载高清鱼眼镜头,其特征在于:所述的车载高清鱼眼镜头满足下述公式:2W≥210°,8.8≤TTL/F≤11.17;其中,2W为车载高清鱼眼镜头的视场角,TTL为车载高清鱼眼镜头的总长,F为车载高清鱼眼镜头的总焦距。7. The vehicle-mounted high-definition fisheye lens according to claim 6, characterized in that: the vehicle-mounted high-definition fisheye lens satisfies the following formula: 2W≥210°, 8.8≤TTL/F≤11.17; wherein, 2W is the vehicle-mounted The field of view of the high-definition fisheye lens, TTL is the total length of the car HD fisheye lens, and F is the total focal length of the car high-definition fisheye lens. 8.根据权利要求7所述的车载高清鱼眼镜头,其特征在于:所述的第一透镜(1)和第二透镜(2)为玻璃球面透镜,所述的第六透镜(6)与成像面(400)之间设有滤光片(500)。8. The vehicle-mounted high-definition fisheye lens according to claim 7, characterized in that: the first lens (1) and the second lens (2) are glass spherical lenses, and the sixth lens (6) and A filter (500) is arranged between the imaging surfaces (400). 9.根据权利要求1所述的车载高清鱼眼镜头,其特征在于:所述的第三透镜(3)、第四透镜(4)、第五透镜(5)和第六透镜(6)的非球面表面形状满足如下方程:9. The vehicle-mounted high-definition fisheye lens according to claim 1, characterized in that: the third lens (3), the fourth lens (4), the fifth lens (5) and the sixth lens (6) The shape of the aspheric surface satisfies the following equation: ZZ == cycy 22 11 ++ 11 -- (( 11 ++ kk )) cc 22 ythe y 22 ++ aa 11 ythe y 22 ++ aa 22 ythe y 44 ++ aa 33 ythe y 66 ++ aa 44 ythe y 88 ++ aa 55 ythe y 1010 ++ aa 66 ythe y 1212 ++ aa 77 ythe y 1414 ++ aa 88 ythe y 1616 ,, 在公式中,参数c为半径所对应的曲率,y为径向坐标其单位和透镜长度单位相同,k为圆锥二次曲线系数;当k系数小于-1时,透镜的面形曲线为双曲线,当k系数等于-1时,透镜的面形曲线为抛物线;当k系数介于-1到0之间时,透镜的面形曲线为椭圆,当k系数等于0时,透镜的面形曲线为圆形,当k系数大于0时,透镜的面形曲线为扁圆形;a1至a8分别表示各径向坐标所对应的系数。In the formula, the parameter c is the curvature corresponding to the radius, y is the radial coordinate, and its unit is the same as that of the lens length, and k is the coefficient of the conic conic curve; when the k coefficient is less than -1, the surface curve of the lens is a hyperbola , when the coefficient k is equal to -1, the surface curve of the lens is a parabola; when the coefficient k is between -1 and 0, the surface curve of the lens is an ellipse; when the coefficient k is equal to 0, the surface curve of the lens is a circle, and when the k coefficient is greater than 0, the surface curve of the lens is oblate; a 1 to a 8 represent the coefficients corresponding to each radial coordinate.
CN201620625756.XU 2016-06-21 2016-06-21 A vehicle-mounted high-definition fisheye lens Active CN205679845U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620625756.XU CN205679845U (en) 2016-06-21 2016-06-21 A vehicle-mounted high-definition fisheye lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620625756.XU CN205679845U (en) 2016-06-21 2016-06-21 A vehicle-mounted high-definition fisheye lens

Publications (1)

Publication Number Publication Date
CN205679845U true CN205679845U (en) 2016-11-09

Family

ID=57431766

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620625756.XU Active CN205679845U (en) 2016-06-21 2016-06-21 A vehicle-mounted high-definition fisheye lens

Country Status (1)

Country Link
CN (1) CN205679845U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107219608A (en) * 2017-06-30 2017-09-29 中山市众盈光学有限公司 A kind of vehicle-mounted fish eye lens of high definition
CN108345087A (en) * 2017-01-25 2018-07-31 大立光电股份有限公司 Optical image lens system, image capturing device and electronic device
CN109283661A (en) * 2018-06-05 2019-01-29 浙江舜宇光学有限公司 Imaging lens system group

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108345087A (en) * 2017-01-25 2018-07-31 大立光电股份有限公司 Optical image lens system, image capturing device and electronic device
CN108345087B (en) * 2017-01-25 2019-10-11 大立光电股份有限公司 Optical image lens system, image capturing device and electronic device
CN107219608A (en) * 2017-06-30 2017-09-29 中山市众盈光学有限公司 A kind of vehicle-mounted fish eye lens of high definition
CN107219608B (en) * 2017-06-30 2023-05-30 中山市众盈光学有限公司 High-definition vehicle-mounted fisheye lens
CN109283661A (en) * 2018-06-05 2019-01-29 浙江舜宇光学有限公司 Imaging lens system group
CN109283661B (en) * 2018-06-05 2020-12-11 浙江舜宇光学有限公司 Image pickup lens group
US11525980B2 (en) 2018-06-05 2022-12-13 Zhejiang Sunny Optical Co., Ltd. Camera lens group

Similar Documents

Publication Publication Date Title
WO2019228127A1 (en) Wide-angle lens
JP7161617B2 (en) In-vehicle camera lens and imaging equipment
CN105866930B (en) High-definition lens
CN104932086B (en) Large-aperture large-image-plane optical lens
WO2019214510A1 (en) Optical imaging lens
CN112014960B (en) A high-resolution, wide-angle vehicle-mounted fisheye optical lens and a surround-view vehicle-mounted lens
CN106842520B (en) High-definition panoramic all-around optical imaging system
CN105044885A (en) Optical imaging system for vehicle monitoring
CN212873050U (en) Vehicle-mounted optical lens
CN105511061A (en) Super-wide high-definition optical lens
CN205679845U (en) A vehicle-mounted high-definition fisheye lens
CN112014962B (en) A high-resolution and wide-angle vehicle optical lens and a vehicle rearview mirror
CN101587231B (en) Megapixels large aperture vehicle front view lens
CN201434930Y (en) Megapixel large aperture vehicle-mounted forward-looking camera lens
CN204883029U (en) Wide angle high definition rearview mirror head
CN214375538U (en) A short-focus optical imaging lens
CN108061960B (en) Lens of vehicle-mounted streaming media camera
CN206906681U (en) A New Vehicle Lens Optical System
CN205404939U (en) A high-definition wide-angle low-distortion vehicle lens
CN206321856U (en) A kind of high definition wide-angle lens
CN207601411U (en) A kind of small aberration optical lens of large aperture
CN215986697U (en) a car lens
CN106483638B (en) A kind of high definition wide-angle lens
CN213023742U (en) A vehicle ADAS lens
CN211454081U (en) 2.8mm wide-angle optical system

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant