High-pixel wide-angle lens and imaging equipment

A wide-angle lens, high-pixel technology, applied in optical components, instruments, optics, etc., can solve the problems of difficult imaging range of vehicle lenses, large edge chromatic aberration, affecting the resolution of the lens in the edge field of view, etc., to reduce sensitivity and eliminate aberrations. , the effect of improving the resolution

Active Publication Date: 2021-06-25
合肥联创光学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical lenses currently used in vehicle systems generally have a large field angle, but their edge chromatic aberration is large, which affects the resolution of the lens at the edge of the field of view, making it difficult for vehicle lenses to achieve a larger imaging range

Method used

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  • High-pixel wide-angle lens and imaging equipment
  • High-pixel wide-angle lens and imaging equipment
  • High-pixel wide-angle lens and imaging equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0054] see figure 1 , a high-pixel wide-angle lens 100 provided by the first embodiment of the present invention includes in sequence from the object side to the imaging surface: a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a stop ST, a fifth lens Lens L5, sixth lens L6, seventh lens L7, eighth lens L8, filter G1.

[0055] The first lens L1 has negative refractive power, its object-side surface S1 is convex, and its image-side surface S2 is concave. The first lens L1 is a glass spherical lens.

[0056] The second lens L2 has negative refractive power, its object-side surface S3 is convex, and its image-side surface S4 is concave. The second lens L2 is a glass aspherical lens.

[0057] The third lens L3 has positive refractive power, the object side surface S5 is concave, the image side surface S6-1 is convex, and the third lens L3 is a glass spherical lens.

[0058] The fourth lens L4 has a negative refractive power, its object side surface S6-2 is c...

no. 2 example

[0073] For a structural schematic diagram of a high-pixel wide-angle lens 200 provided in this embodiment, please refer to Figure 6 . The optical lens 200 in this embodiment is roughly the same as the high-pixel wide-angle lens 100 in the first embodiment, except that the object-side surface S5 of the third lens L3 of the optical lens 200 in this embodiment is a convex surface, and the second The five lenses L5 are glass aspheric lenses, and the curvature radius and material selection of each lens are different.

[0074] Refer to Table 3 for relevant parameters of each lens in the high-pixel wide-angle lens 200 provided in the first embodiment of the present invention.

[0075] table 3

[0076]

[0077]

[0078] The parameters of each lens aspheric surface in this embodiment are shown in Table 4.

[0079] Table 4

[0080]

[0081] In this embodiment, its field curvature, distortion and axial chromatic aberration are as follows Figure 7 , Figure 8 , Figure 9...

no. 3 example

[0088] For a schematic structural diagram of an imaging device 300 provided in this embodiment, please refer to Figure 11 , including the optical imaging lens (such as the high-pixel wide-angle lens 100 ) and the imaging element 310 in any of the above-mentioned embodiments. The imaging element 310 may be a CMOS (Complementary Metal Oxide Semiconductor, Complementary Metal Oxide Semiconductor) image sensor, and may also be a CCD (Charge Coupled Device, Charge Coupled Device) image sensor.

[0089] The imaging device 300 may be a sports camera, a surveillance camera, a vehicle recorder, a video camera, or any other electronic device loaded with an optical imaging lens.

[0090] The imaging device 300 provided in this embodiment includes a high-pixel wide-angle lens. Since the high-pixel wide-angle lens can correct the chromatic aberration of the peripheral field of view, improve edge resolution, and achieve a larger imaging range, the imaging device 200 has a larger imaging ra...

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Abstract

The invention provides a high-pixel wide-angle lens, which comprises sequentially from the object side to the imaging surface: a first lens with negative refractive power, the surface on the object side is convex, and the surface on the image side is concave; the second lens with negative refractive power The lens has a convex surface on the object side and a concave surface on the image side; a third lens with positive power has a convex surface on the image side; a fourth lens with negative power has a concave surface on the object side and a concave surface on the image side. The surface is convex; the diaphragm; the fifth lens with positive power, the object side surface and the image side surface are convex; the sixth lens with positive power, the object side surface and the image side surface are convex; The seventh lens with negative refractive power, whose object-side surface and image-side surface are both concave; the eighth lens with positive refractive power, whose object-side surface and image-side surface are both convex; and a filter. The high-pixel wide-angle lens provided by the present invention can correct the chromatic aberration of the peripheral field of view, improve the resolution of the border, and realize a larger imaging range.

Description

technical field [0001] The invention relates to a lens imaging system, in particular to a high-pixel wide-angle lens and imaging equipment. Background technique [0002] With the continuous advancement of science and technology, wide-angle lenses are developing by leaps and bounds, and are widely used in all walks of life, especially the automotive field is developing rapidly. With the widespread use of vehicle lenses, people pay more and more attention to performance issues such as the quality of its imaging effect and the size of the field of view. The optical lenses currently used in vehicle systems generally have a large field angle, but their edge chromatic aberration is large, which affects the resolution of the lens at the edge of the field of view, making it difficult for vehicle lenses to achieve a larger imaging range. The present invention is proposed based on the above background. Contents of the invention [0003] The purpose of the present invention is to p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
CPCG02B13/0045G02B13/006G02B13/06G02B13/18
Inventor 魏文哲刘绪明曾吉勇
Owner 合肥联创光学有限公司
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