Optical lens

By rationally designing the optical lens with nine lenses and their optical power and surface shape, the problem of existing ultra-wide-angle lenses being unable to meet the requirements of high relative illumination and high resolution has been solved. This achieves a wide angle, high resolution, and good thermal stability, making it suitable for imaging needs in different application scenarios.

CN117310946BActive Publication Date: 2025-11-07中山联拓光学有限公司
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Patent Information

Application Number
CN202311426221.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-31
Publication Date
2025-11-07
Estimated Expiration
2043-10-31

AI Technical Summary

Technical Problem

Existing ultra-wide-angle lenses cannot meet the requirements for high relative illumination and high resolution, and their requirements in different application scenarios are not fully met.

Method used

Design an optical lens that, by rationally allocating the optical power and surface shape of nine lenses, and using all-glass spherical lenses, meets specific optical conditions to achieve wide-angle, high relative illumination, and high resolution. This includes lens combinations with negative and positive optical power, and rationally setting the aperture stop position to optimize imaging performance.

Benefits of technology

It achieves a wide-angle, high relative illumination, and high resolution optical lens, with excellent imaging capabilities, long service life, and good thermal stability.

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Abstract

The application discloses an optical lens, which comprises, in sequence from an object side to an imaging surface along an optical axis, a first lens with negative focal length, whose object side is a convex surface and whose image side is a concave surface; a second lens with negative focal length, whose object side is a convex surface and whose image side is a concave surface; a third lens with negative focal length, whose object side and image side are both concave surfaces; a fourth lens with positive focal length, whose object side is a concave surface or a plane, and whose image side is a convex surface; a fifth lens with positive focal length, whose object side is a convex surface and whose image side is a concave surface; a diaphragm; a sixth lens with positive focal length, whose object side and image side are both convex surfaces; a seventh lens with negative focal length, whose object side and image side are both concave surfaces, and the sixth lens and the seventh lens form a cemented lens with negative focal length; an eighth lens with positive focal length, whose object side and image side are both convex surfaces; and a ninth lens with positive focal length, whose object side is a convex surface. The optical lens has the advantages of large wide angle, high relative luminance and high resolving power.
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Citation Information

Patent Citations

  • Wide-angle low-distortion optical imaging lens

    CN114942515A