Large-light-flux high-resolution ultra-wide-angle prime lens and electronic equipment

By optimizing the optical structure and material selection of the ultra-wide-angle fixed-focus lens, the problems of overall lens length, small aperture, and low image quality have been solved, achieving miniaturized, high-definition, day-and-night confocal high-resolution imaging, suitable for fields such as vehicle dashcams and security monitoring.

CN223911114UActive Publication Date: 2026-02-13XIAMEN LEADING OPTICS
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Patent Information

Application Number
CN202520547423.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-26
Publication Date
2026-02-13
Estimated Expiration
2035-03-26

AI Technical Summary

Technical Problem

Existing 1/2.7" target-area imaging ultra-wide-angle lenses suffer from problems such as long overall lens length, small aperture, low image quality, and unstable focus during day-night transitions, making it difficult to meet the requirements of miniaturization, high-quality imaging, and high resolution under low-light conditions.

Method used

A high-throughput, high-resolution ultra-wide-angle fixed-focus lens was designed, employing a negative-positive-negative-positive Kirk three-element imaging system. It combines a negative-power meniscus lens that curves towards the aperture stop, a combination of glass spherical and plastic aspherical lenses, an aperture stop and a sealing ring, and materials with large differences in dispersion coefficients to optimize light distribution and chromatic aberration correction.

Benefits of technology

It achieves miniaturization, day and night confocal imaging, high-definition imaging, adaptability to various lighting conditions, correction of chromatic aberration and aberration, and improved imaging quality and stability, making it suitable for application scenarios with limited space and high-precision image requirements.

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Abstract

The utility model discloses an ultra-wide-angle prime lens with large light transmission and high resolution and electronic equipment. The lens is sequentially provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object plane to an image plane along an optical axis. The first lens has negative diopter, the object side surface of the lens is a convex surface, and the image side surface of the lens is a concave surface; the second lens has negative diopter, the object side surface of the lens is a concave surface, and the image side surface of the lens is a convex surface; the third lens has positive diopter, the object side surface of the lens is a convex surface, and the image side surface of the lens is a plane or a convex surface; the fourth lens has positive diopter, the object side surface of the lens is a convex surface, and the image side surface of the lens is a convex surface. According to the utility model, the effective focal length is 2.53 mm, the F is 1.6, and the distortion result is 1t; the ultra-wide-angle imaging lens is small in size, large in clear aperture, confocal in day and night, high in resolution and excellent in performance in high and low temperature environments.
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