Optical lens

By combining specific optical power and surface shape of seven lenses, the total optical length and field of view are optimized, solving the problem of poor imaging performance of automotive optical lenses under low illumination conditions, and realizing a miniaturized optical lens design with a large field of view and high imaging quality.

CN121806252APending Publication Date: 2026-04-07JIANGXI LIANCHUANG ELECTRONICS CO LTD
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Patent Information

Application Number
CN202610139201.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-02
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing automotive optical lenses perform poorly in low-light conditions, making it difficult to meet the demands for high pixel count and high resolution. Furthermore, the design of optical lenses struggles to balance miniaturization with high image quality.

Method used

The optical lens design employs seven lenses, with a specific combination of optical power and surface shape, including the pairing of negative and positive optical power lenses. Through reasonable allocation of optical power and optimization of total optical length and field of view, the condition of 0.17 < 1° × TTL / (IH / 2) / (FOV / 2) < 0.24 is met, thereby achieving lens miniaturization and a large field of view.

Benefits of technology

It improves the imaging quality of the optical lens, reduces aberrations, and achieves miniaturization, large aperture, large image plane, and high pixel count, while enhancing imaging capabilities under low-light conditions.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention provides an optical lens, which comprises seven lenses with focal power and sequentially comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object side to an imaging surface along an optical axis, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface; the third lens has negative focal power; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has positive focal power, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; the seventh lens has negative focal power; the optical total length TTL of the optical lens, the real image height IH corresponding to the maximum field angle of the optical lens and the maximum field angle FOV of the optical lens meet the following conditions: 0.17 lt; 1 degree * TTL / (IH / 2) / (FOV / 2) lt; and 0.24. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, the aberration is reduced, and the imaging quality of the optical lens is improved.
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