Motion-activated sensor device with forward, wide angle and downward & backward detections

EP4673928A1Pending Publication Date: 2026-01-07IQ GRP SDN BHD
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Patent Information

Application Number
EP2024712946
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-02-28
Filing Date
2024-02-22
Publication Date
2026-01-07

AI Technical Summary

Technical Problem

Prior motion-activated sensor devices have limitations in field of view, particularly lacking wide angle, downward, and backward detection capabilities, leading to blind spots and increased false responses due to obstructed infrared radiation paths and inadequate sensor configurations.

Method used

A motion-activated sensor device with a housing featuring PIR viewing windows, optionally with optical lenses, and a special array of faceted mirror segments that span the housing to reflect and focus infrared radiation onto a PCB-mounted sensor, enabling comprehensive forward, wide angle, and downward & backward detection without optical image distortion.

Benefits of technology

The solution provides enhanced detection angles of at least 140 degrees, minimizing blind spots and reducing false responses by effectively capturing infrared radiation through strategically positioned faceted mirror segments, thereby improving the sensor's detection capabilities.

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Abstract

One exemplary example of an improved motion-activated sensor device is illustrated in the present invention. The front, two adjacent side and bottom viewing windows of a box-like housing (2) are made of passive infrared with or without optical lenses. One or more sensor (4) is mounted onto a vertically disposed printed circuit board (3). A saddle-like half cylindrical shaped array of faceted mirror segments (6) are disposed above and at a distance in front of the mounted sensor (4). These mirror segments (6, 6f, 6r, 6m, 6s, 6c) are arranged to reflect and focus infrared radiation onto the mounted sensor (4). Thus, forward, downward & backward and wide angle detections are achieved.
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