Optical lens

By reasonably configuring the lens parameters and material selection, an optical lens was designed, which solved the problem of insufficient imaging quality of optical lenses with large field of view, large aperture, and small volume, and achieved efficient imaging applications in multiple fields.

CN223139939UActive Publication Date: 2025-07-22SUNNY OPTICS(ZHONGSHAN) CO LTD
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Patent Information

Application Number
CN202421643109.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-11
Publication Date
2025-07-22
Estimated Expiration
2034-07-11

AI Technical Summary

Technical Problem

Existing optical lenses are difficult to meet the needs of large field of view, large aperture, small volume and high imaging quality at the same time. Especially in applications in security monitoring, automobile assisted driving, smartphones, intelligent detection, sports cameras, video conferencing and virtual reality, the market's requirements for the imaging quality of optical lenses are constantly improving.

Method used

An optical lens is designed, including the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens and the eighth lens along the optical axis. By reasonably configuring parameters such as the optical power, radius of curvature and Abbe number of the lens, a mixed assembly of glass and plastic lenses is adopted, and an aspherical lens and adiaphragm are used to achieve smooth transition and chromatic aberration correction of light, increasing the field of view, reducing aberration, and improving imaging quality.

Benefits of technology

It has achieved a small-sized optical lens with large field of view, high definition, large aperture and strong temperature adaptability. It is suitable for high imaging quality requirements in many fields, especially in harsh climates to maintain good imaging performance.

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Abstract

The utility model discloses an optical lens. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens from an object side to an image side along an optical axis, the first lens has negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface; the second lens has negative focal power, the object side surface of the second lens is a convex surface, and the image side surface is a concave surface; the third lens has negative focal power, and the object side surface of the third lens is a concave surface; the fourth lens has positive focal power, the object side surface of the fourth lens is a convex surface, and the image side surface is a convex surface; the object side surface of the fifth lens is a convex surface; the image side surface of the sixth lens is a convex surface; the seventh lens has negative focal power, and the object side surface of the seventh lens is a concave surface; the eighth lens has positive focal power, the object side surface of the eighth lens is a convex surface, and the image side surface is a convex surface; wherein the combined effective focal length Fa of the first to fourth lenses and the total effective focal length F of the optical lens meet the condition that Fa / F is greater than or equal to-4.1 and less than or equal to-2.2.
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