Optical lens

An optical lens and lens technology, applied in the field of optical lens, can solve the problem that wide-angle lens cannot meet the demand

Active Publication Date: 2022-07-26
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

[0002] At present, wide-angle lenses are more and more widely used, and the requirements for miniaturization of large-angle lenses are becoming more and more prominent. With different application requirements, it is necessary to have the ability of miniaturization and high relative illumination at the same time. The known wide-angle lenses can no longer meet the current requirements needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] 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 third lens L3, a diaphragm , the fourth lens L4, the fifth lens L5, the sixth lens L6 and the filter G1.

[0084]The first lens L1 has negative refractive power, the object side S1 is convex, and the image side S2 is concave; the second lens L2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave; the third lens L3 It has positive refractive power, its object side S5 is concave, and its image side S6 is convex; diaphragm; the fourth lens L4 has positive power, its object side S8 is concave, and its image side S9 is convex; the fifth lens L5 has positive focus The object side S10 and the image side S11 are convex; the sixth lens L6 has negative refractive power, the ...

Embodiment 2

[0098] see Figure 7 , 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 third lens L3, a diaphragm , the fourth lens L4, the fifth lens L5, the sixth lens L6 and the filter G1.

[0099] The first lens L1 has negative refractive power, the object side S1 is convex, and the image side S2 is concave; the second lens L2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave; the third lens L3 It has positive refractive power, its object side S5 is concave, and its image side S6 is convex; diaphragm; the fourth lens L4 has positive power, its object side S8 is convex, and its image side S9 is convex; the fifth lens L5 has positive focus The object side S10 and the image side S11 are convex; the sixth lens L6 has negative refractive power, the...

Embodiment 3

[0113] see Figure 13 , 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 third lens L3, a diaphragm , the fourth lens L4, the fifth lens L5, the sixth lens L6 and the filter G1.

[0114] The first lens L1 has negative refractive power, the object side S1 is convex, and the image side S2 is concave; the second lens L2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave; the third lens L3 It has positive refractive power, its object side S5 is concave, and its image side S6 is convex; diaphragm; the fourth lens L4 has positive power, its object side S8 is concave, and its image side S9 is convex; the fifth lens L5 has positive focus degree, its object side S10 and image side S11 are convex surfaces; the sixth lens L6 has negative refrac...

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Abstract

The present invention provides an optical lens. From the object side to the imaging surface along the optical axis, the order is as follows: a first lens with negative refractive power, whose object side is convex, and whose image side is concave; a second lens with negative refractive power is provided. lens, the object side is convex, the image side is concave; the third lens with positive refractive power, the object side is concave, the image side is convex; diaphragm; the fourth lens with positive refractive power, its image side is convex ; The fifth lens with positive refractive power, the object side and the image side are convex; the sixth lens with negative refractive power, the object side is concave; the total optical length TTL of the optical lens, the corresponding maximum field angle The true image height IH and FOV satisfy: 2.5≤TTL / IH≤3.0, 0.02mm / °≤IH / FOV≤0.03mm / °. Optical lenses have the characteristics of large field of view, miniaturization and high illumination at the same time.

Description

technical field [0001] The present invention relates to the technical field of imaging lenses, in particular to an optical lens. Background technique [0002] At present, the application of wide-angle lenses is becoming more and more extensive, and the requirements for large-angle miniaturization of lenses are becoming more and more prominent. With different application requirements, it is necessary to have the ability of miniaturization and high relative illumination at the same time. The known wide-angle lenses can no longer meet the requirements of today's demand. SUMMARY OF THE INVENTION [0003] In view of the above problems, the purpose of the present invention is to provide an optical lens, which has the characteristics of large field of view, miniaturization and high illumination. [0004] For achieving the above object, technical scheme of the present invention is as follows: [0005] The present invention provides an optical lens, comprising a total of six lens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/06G02B13/18
Inventor 王俊晨徐宇轩陈伟建
Owner 合肥联创光学有限公司
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