Infrared detection lens with super-high installation height compatibility and infrared detection device

By designing an infrared detection lens with a central lens area larger than the circumferential lens area, the problem of inconsistent detection range at different installation heights is solved, achieving convergence of detection range and improved sensitivity at different heights, suitable for conventional, mid-to-high altitude, high-altitude and ultra-high-altitude applications.

CN122194444APending Publication Date: 2026-06-12SHENZHEN MERRYTEK TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN MERRYTEK TECHNOLOGY CO LTD
Filing Date
2026-02-08
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing Fresnel lens designs cannot adapt to different installation heights, resulting in inconsistencies in the detection range and sensitivity of pyroelectric infrared sensors, especially when installed at extremely high altitudes where the detection range is insufficient and the sensitivity is low.

⚗Method used

Design an infrared detection lens with ultra-high installation height compatibility. The area of ​​the central lens surface is larger than that of the circumferential lens surface. The area of ​​the lens area decreases radially from the inside to the outside, forming a multi-layered ring structure. The central lens area and the circumferential lens area are matched with different pyroelectric infrared probes. The optical design is optimized to improve signal strength and reduce interference.

🎯Benefits of technology

It achieves convergence of detection range at different installation heights, improves the sensitivity and accuracy of the detection device, reduces production costs, and is suitable for conventional, medium-high altitude, high-altitude and ultra-high-altitude applications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application provides an infrared detection lens with super-high installation height compatibility and an infrared detection device, the lens comprising a central lens area and at least three circumferential lens areas circumferentially distributed around the central lens area, wherein the central lens area comprises a plurality of central lens windows, the circumferential lens area comprises a plurality of circumferential lens windows, the area of any central lens window of the central lens area is greater than the area of at least one circumferential lens window, the circumferential lens area as a whole forms at least three lens rings circumferentially distributed around the central lens area in parallel, and in each lens ring, the area of any circumferential lens window of at least one outer lens ring is smaller than the area of the circumferential lens window of the relatively inner lens ring, so as to realize the convergence of the detection range at different installation heights while realizing the compatibility of medium-high altitude, high altitude and super-high altitude applications.
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