A large-aperture industrial vision detection lens applied to a vehicle lamp self-closing loop

By designing a large-aperture industrial vision inspection lens, and using a combination of positive and negative power lenses and an aperture structure, the problems of insufficient brightness and excessive size of traditional lenses have been solved. This has enabled high brightness and a compact design under low light conditions, while maintaining stable performance at different temperatures.

CN119902354BActive Publication Date: 2025-10-21CHANGZHOU XINGYU AUTOMOTIVE LIGHTING SYST CO LTD
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Patent Information

Application Number
CN202510256268.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-03-05
Publication Date
2025-10-21
Estimated Expiration
2045-03-05

AI Technical Summary

Technical Problem

Traditional five-element industrial vision lenses have small apertures, resulting in insufficient image brightness under low light conditions. They are also large in size, making it difficult to meet the needs of compact designs, and their performance is unstable under different temperature conditions.

Method used

Design a large-aperture industrial vision inspection lens, which adopts a combination of positive and negative optical power lenses, including the first, third and fourth lenses with positive optical power, and the second and fifth lenses with negative optical power. Combined with the system aperture and vignetting aperture, the lens materials and optical spacing are optimized to ensure improved light collection capability and imaging quality under low light conditions.

Benefits of technology

It achieves higher imaging brightness and smaller lens size under low light conditions, while maintaining stable optical performance under different temperature environments, adapting to harsh working conditions.

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Abstract

The application discloses a large-aperture industrial vision detection lens applied to a vehicle lamp self-closing loop, which comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens arranged in sequence from an object side to an image side along an optical axis direction; wherein the first lens, the third lens and the fourth lens each have a positive focal length; and the second lens and the fifth lens each have a negative focal length. Through the lens, the aperture size can be increased to enhance the light collection capability, the lens size can be optimized, and the temperature adaptability can be improved.
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