Staggered sectional type infrared detection lens and infrared detection device

By using a staggered segmented infrared detection lens design, combined with a planar spliced ​​light-gathering surface, the challenges of existing infrared detection devices in balancing large detection angles and small size are solved, achieving miniaturization, improved accuracy, and enhanced stability of the infrared detection device.

CN224553513UActive Publication Date: 2026-07-24SHENZHEN MERRYTEK TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202521520985.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2025-01-21
Filing Date
2025-07-18
Publication Date
2026-07-24
Estimated Expiration
2035-07-18

AI Technical Summary

Technical Problem

The Fresnel lens design of existing infrared detection devices presents challenges in balancing a large detection angle and a small size. Furthermore, the overall convex design affects aesthetics, is susceptible to wind, rain, and dust, leading to a decrease in detection accuracy and stability.

Method used

The design employs a staggered segmented infrared detection lens, which avoids reflection/refraction by staggering the central lens group and the wide-angle lens group, combined with a planar spliced ​​light-receiving surface. This achieves a balance between a large light-receiving surface area and a small volume, and improves detection accuracy under a fixed effective light-receiving angle.

Benefits of technology

The design of the infrared detection device has been miniaturized, improving detection accuracy and stability, reducing reflection/refraction, enhancing aesthetics, and improving resistance to wind and rain interference.

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Abstract

The utility model provides a staggered sectional type infrared detection lens and an infrared detection device, and the staggered sectional type infrared detection lens is provided with a central lens group and a wide-angle lens group which is arranged in a staggered manner relative to the central lens group. Based on the design that the central lens group and the wide-angle lens group are arranged in a staggered mode and are provided with staggered sections of light inlet surfaces, compared with the overall convex light inlet surface form, the light inlet surface of the wide-angle lens group has the size which is relatively compressed in the convex direction, and the light inlet surface of the wide-angle lens group is formed by splicing a plurality of planes. And compared with an arc-shaped convex light incoming surface form, the reflection / refraction of incident infrared light is avoided, so that the light gathering efficiency of each lens unit of the wide-angle lens group is improved, and the detection precision state of the infrared detection device is ensured by a large light incoming surface area design. And the miniaturization design of the infrared detection device is considered.
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