Optical Lenses and Imaging Equipment

An optical lens and lens technology, applied in the field of imaging lenses, can solve the problems of large wide-angle, high pixel, day and night confocal miniaturization, low pixel, small aperture, etc., to improve the camera experience, achieve miniaturization, structure compact effect

Active Publication Date: 2022-07-05
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

[0003] However, currently used optical lenses generally have shortcomings such as low pixels and small apertures, and cannot simultaneously meet the requirements of large wide-angle, high pixels, day and night confocal, and miniaturization.

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

[0061] see figure 1 , is a schematic structural diagram of the optical lens 100 provided by the first embodiment of the present invention. The optical lens 100 sequentially includes from the object side to the imaging plane along the optical axis: a first lens L1, a second lens L2, a third lens L3, a diaphragm ST, the fourth lens L4, the fifth lens L5, the sixth lens L6 and the filter G1.

[0062] Wherein, the first lens L1 has negative refractive power, the object side S1 of the first lens is convex, and the image side S2 of the first lens is concave;

[0063] The second lens L2 has negative refractive power, the object side S3 of the second lens is convex, and the image side S4 of the second lens is concave;

[0064] The third lens L3 has positive refractive power, the object side S5 of the third lens is convex, and the image side S6 of the third lens is concave;

[0065] The fourth lens L4 has positive refractive power, and the object side S7 of the fourth lens and the im...

no. 2 example

[0079] see Image 6 , the structure of the optical lens 200 provided by the second embodiment of the present invention is substantially the same as that of the optical lens 100 provided by the first embodiment, and the main difference lies in the curvature radius and material selection of each lens.

[0080] The relevant parameters of each lens in the optical lens 200 provided by the second embodiment of the present invention are shown in Table 3.

[0081] table 3

[0082]

[0083] Table 4 shows the surface shape coefficients of each aspherical surface of the optical lens 200 in this embodiment.

[0084] Table 4

[0085]

[0086] Please refer to Figure 7 , Figure 8 , Figure 9 and Figure 10 , which are respectively a distortion curve graph, an axial chromatic aberration graph, a visible light band center defocusing graph, and an infrared band center defocusing graph of the optical lens 200 .

[0087] Figure 7 The distortion curve represents the distortion at ...

no. 3 example

[0091] see Figure 11 The structure of the optical lens 300 provided by the third embodiment of the present invention is substantially the same as that of the optical lens 100 provided by the first embodiment, and the main difference is that the curvature radius and material selection of each lens are different.

[0092] The relevant parameters of each lens in the optical lens 300 provided by the third embodiment of the present invention are shown in Table 5.

[0093] table 5

[0094]

[0095] Table 6 shows the surface shape coefficients of each aspherical surface of the optical lens 300 in this embodiment.

[0096] Table 6

[0097]

[0098] Please refer to Figure 12 , Figure 13 , Figure 14 and Figure 15 , which are respectively a distortion curve graph, an axial chromatic aberration graph, a visible light band center defocusing graph, and an infrared band center defocusing graph of the optical lens 300 .

[0099] Figure 12 The distortion curve represents th...

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Abstract

The invention discloses an optical lens and an imaging device. The optical lens sequentially includes from an object side to an imaging surface along an optical axis: a first lens with negative refractive power, the object side surface is convex and the image side surface is concave; The second lens with optical power has a convex object side and a concave image side; the third lens with positive power has a convex object side and a concave image side; diaphragm; a fourth lens with positive power , its object side is convex, the image side is convex; the fifth lens with negative refractive power, its object side is concave, the image side is concave; and the sixth lens with positive refractive power, its object side is at the near optical axis The position is convex, and the image side is convex. The optical lens satisfies the following conditional formula: 7.2<TTL / f<7.8; wherein, f represents the effective focal length of the optical lens, and TTL represents the total optical length of the optical lens. The optical lens has the advantages of large wide angle, high pixel, day and night confocal, and miniaturization.

Description

technical field [0001] The present invention relates to the technical field of imaging lenses, in particular to an optical lens and an imaging device. Background technique [0002] In recent years, with the rapid development of science and technology, all walks of life have increasingly higher requirements for the imaging quality of surveillance lenses. In particular, with the rapid development of the emerging optical industry (VR / AR), users have higher and higher imaging requirements for imaging equipment in the VR / AR field. Whether it is in the field of surveillance or in the field of VR / AR, a miniaturized lens that can take into account ultra-wide-angle, high-pixel, and day and night confocal at the same time is needed to meet the imaging needs. [0003] However, the currently used optical lenses generally have shortcomings such as low pixels and small apertures, and cannot meet the requirements of large wide-angle, high pixels, day and night confocal, and miniaturizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/06G02B13/18
CPCG02B13/0045G02B13/06
Inventor 曾昊杰于笑枝
Owner 合肥联创光学有限公司
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