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Optical lenses and imaging equipment

An optical lens and lens technology, applied in optics, optical components, instruments, etc., can solve the problems of increased weight of the lens, small field of view of the lens, increased cost, etc., to reduce cost and weight, expand the observation field, and improve the temperature. performance effect

Active Publication Date: 2021-01-12
NINGBO SUNNY AUTOMOTIVE OPTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the temperature has a great influence on the performance parameters of the plastic lens, it is easy to affect the imaging quality of the lens. Therefore, the usual vehicle-mounted front-view lens generally does not contain plastic lenses, but uses glass lenses, which increases the weight of the lens. To achieve high resolution, The cost will increase significantly
[0005] At the same time, the vehicle-mounted front-view lens is usually required to see far and detect objects at a long distance in front. The focal length of the corresponding lens is longer, but the field of view of the lens is limited, making the field of view of the lens small.
Therefore, the field of view of the conventional vehicle-mounted front-view lens is small, and it is necessary to cooperate with a wide-angle lens with a large field of view to expand the overall observation field of view, and combine the software to complete the picture stitching

Method used

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  • Optical lenses and imaging equipment
  • Optical lenses and imaging equipment
  • Optical lenses and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0093] Such as figure 1 As shown, the optical lens according to the first embodiment of the present invention includes in sequence from the object side to the image side: a meniscus-shaped first lens L1 with negative refractive power, a first surface S1 convex to the object side and a concave first surface S1 The second surface S2 on the image side, that is, the object side S1 of the first lens L1 is a convex surface, and the image side S2 is a concave surface; the meniscus-shaped second lens L2 with negative refractive power has a first lens L2 that is concave to the object side. The surface S3 and the second surface S4 convex to the image side, that is, the object side S3 of the second lens L2 is a concave surface, and the image side S4 is a convex surface; the third lens L3 having a biconvex shape with positive refractive power has a convex surface toward the object side The first surface S5 and the second surface S6 convex to the image side; the stop STO; the fourth lens L...

no. 2 example

[0106] Such as figure 2As shown, the optical lens according to the second embodiment of the present invention includes in sequence from the object side to the image side: a meniscus-shaped first lens L1 with negative power, a first surface S1 convex to the object side and a concave first surface S1 The second surface S2 on the image side, that is, the object side S1 of the first lens L1 is a convex surface, and the image side S2 is a concave surface; the meniscus-shaped second lens L2 with negative refractive power has a first lens L2 that is concave to the object side. The surface S3 and the second surface S4 convex to the image side, that is, the object side S3 of the second lens L2 is a concave surface, and the image side S4 is a convex surface; the third lens L3 having a biconvex shape with positive refractive power has a convex surface toward the object side The first surface S5 and the second surface S6 convex to the image side; the stop STO; the fourth lens L4 and the ...

no. 3 example

[0118] Such as image 3 As shown, the optical lens according to the third embodiment of the present invention includes in sequence from the object side to the image side: a meniscus-shaped first lens L1 with negative power, a first surface S1 convex to the object side and a concave first surface S1 The second surface S2 on the image side, that is, the object side S1 of the first lens L1 is a convex surface, and the image side S2 is a concave surface; the meniscus-shaped second lens L2 with negative refractive power has a first lens L2 that is concave to the object side. The surface S3 and the second surface S4 convex to the image side, that is, the object side S3 of the second lens L2 is a concave surface, and the image side S4 is a convex surface; the third lens L3 having a biconvex shape with positive refractive power has a convex surface toward the object side The first surface S5 of the first surface S5 and the second surface S6 convex to the image side; the stop STO; the ...

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Abstract

The invention provides an optical lens and an imaging device. The optical lens comprises in sequence from the object side to the image side: the first lens is a meniscus lens with negative power, the object side of the first lens is convex, and the image side is concave; the second lens is a A meniscus lens with focal power, the object side of the second lens is concave, and the image side is convex; the third lens is a biconvex lens with positive power; the fourth lens; the fifth lens is cemented with the fourth lens; Six lenses with positive power. Through the optical lens and imaging device according to the present invention, good imaging quality can be obtained by using plastic lens, while better temperature performance can be ensured, and the cost and weight of the lens can be reduced.

Description

technical field [0001] The present invention relates to the fields of optical lenses and imaging devices. Background technique [0002] Imaging devices such as camera-mounted mobile devices and digital still cameras using, for example, charge-coupled devices (CCD) and complementary metal-oxide semiconductors (CMOS) as solid-state imaging elements are well known. [0003] With the development of technology, the resolution requirements of optical lenses are getting higher and higher. For surveillance lenses or vehicle lenses that work in outdoor environments, the resolution requirements are even more stringent. Because the working environment of surveillance cameras or vehicle cameras is changeable, it is necessary to maintain perfect resolution in hot, high temperature days, cold, rainy and snowy days. [0004] In particular, the vehicle front-view lens involves active safety, the impact of temperature on lens imaging, and usually the control of the back focus offset is mor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B13/06G02B1/04
CPCG02B13/0045G02B13/06G02B13/18G02B1/041
Inventor 王东方姚波谢前森
Owner NINGBO SUNNY AUTOMOTIVE OPTECH