Optical lens

An optical lens and lens technology, applied in the field of optical lens, can solve the problems of small field of view, small focal length, etc., and achieve the effect of large field of view

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

Although the telephoto lens has a long focal length, but the field of view is small, it is generally used for capturing and observing long-distance objects; although the wide-angle lens has a large field of view, but the focal length is small, it is generally used for capturing and observing close-range objects; therefore, it is necessary to design a compatible The function of telephoto lens and wide-angle lens, and has a large aperture, large field of view and high resolution optical lens, to replace the traditional multiple lenses with a single function in the automatic driving assistance system

Method used

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Experimental program
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Effect test

Embodiment 1

[0095] see figure 1, which is a schematic structural diagram of the optical lens provided in Embodiment 1 of the present invention. The optical lens sequentially includes from the object side to the imaging plane along the optical axis: a first lens L1, a second lens L2, a diaphragm ST, and a third lens. L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the filter G1, and the protective glass G2.

[0096] The first lens L1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens L2 has positive refractive power, its object side S3 is concave, and its image side S4 is convex; diaphragm ST; The third lens L3 has positive refractive power, and the object side S5 and the image side S6 are convex; the fourth lens L4 has positive refractive power, and the object side S7 and the image side S8 are convex; the fifth lens L5 has negative refractive power , the object side S9 and the image side S10 are both concave; the s...

Embodiment 2

[0109] see Image 6 , which is a schematic structural diagram of the optical lens provided in Embodiment 2 of the present invention. The optical lens sequentially includes from the object side to the imaging plane along the optical axis: a first lens L1, a second lens L2, a diaphragm ST, and a third lens. L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the filter G1, and the protective glass G2.

[0110] The first lens L1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens L2 has positive refractive power, its object side S3 is concave, and its image side S4 is convex; diaphragm ST; The third lens L3 has positive refractive power, and the object side S5 and the image side S6 are convex; the fourth lens L4 has positive refractive power, and the object side S7 and the image side S8 are convex; the fifth lens L5 has negative refractive power , the object side S9 and the image side S10 are both concave; the ...

Embodiment 3

[0123] see Figure 11 , which is a schematic structural diagram of the optical lens provided in Embodiment 3 of the present invention. The optical lens sequentially includes from the object side to the imaging plane along the optical axis: a first lens L1, a second lens L2, a diaphragm ST, and a third lens. L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, the filter G1, and the protective glass G2.

[0124] The first lens L1 has negative refractive power, its object side S1 is convex, and its image side S2 is concave; the second lens L2 has positive refractive power, its object side S3 is concave, and its image side S4 is convex; diaphragm ST; The third lens L3 has positive refractive power, and the object side S5 and the image side S6 are convex; the fourth lens L4 has positive refractive power, and the object side S7 and the image side S8 are convex; the fifth lens L5 has negative refractive power , the object side S9 and the image side S10 are both concave; th...

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Abstract

The invention discloses an optical lens, comprising a total of six lenses along the optical axis from the object side to the imaging surface in sequence: a first lens with negative optical power, the object side is convex, the image side is concave; The second lens with high power has a concave object side and a convex image side; the diaphragm; the third lens with positive refractive power has both the object side and the image side convex; the fourth lens with positive power has an object side Both the side and the image side are convex; the fifth lens with negative refractive power is concave on the object side and the image side; the sixth lens with positive refractive power is convex on the object side and concave on the image side; the The fourth lens and the fifth lens are cemented to form a cemented lens; the actual image height IH corresponding to the effective focal length f of the optical lens and the maximum angle of view satisfies: 0.6<f / IH<0.7. Through the present application, the optical lens has the advantages of large aperture, large field angle and high resolution.

Description

technical field [0001] The present invention relates to the technical field of imaging lenses, in particular to an optical lens. Background technique [0002] In recent years, the automatic driving assistance system has developed rapidly, and the image algorithm is also being updated. As the key component of the automatic driving assistance system to obtain external information, the vehicle lens also needs to be introduced to meet the needs of the current stage. [0003] At present, the information acquisition of conventional automatic driving assistance systems in a single direction is usually inseparable from telephoto lenses and wide-angle lenses. Although the telephoto lens has a long focal length, it has a small field of view and is generally used for capturing and observing long-distance objects; although the wide-angle lens has a large field of view, but has a small focal length, it is generally used for capturing and observing close-up objects; therefore, it is neces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/06G02B13/18
CPCG02B13/006G02B13/06
Inventor 陈伟建徐宇轩
Owner 合肥联创光学有限公司
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