Ceiling Mounted Lens for PIR Sensors | 8605-12

Ceiling Mounted Fresnel Lens with 360° PIR Detection for Stable Motion Sensing and Reduced False Triggers

The 8605-12 Ceiling Mounted PIR Lens is a precision Fresnel optical component designed for PIR sensors requiring stable infrared detection and improved false alarm control.
With a 17mm focal length, 360° sensing angle, and 10-meter detection diameter, this lens provides optimized infrared energy distribution for ceiling-mounted motion detection systems.
Its optical structure helps improve sensing consistency, making it suitable for security devices, building automation systems and intelligent detection equipment where reliable performance is essential.

What is the 8605-12 Ceiling Mounted Lens?
The 8605-12 is a ceiling-mounted Fresnel lens designed for PIR sensors requiring stable infrared detection. It features a 17mm focal length, 360° sensing coverage, and a 10-meter detection diameter, helping improve detection reliability and reduce false triggers in indoor applications.

Designed for Reliable PIR Performance False alarms are one of the key challenges in PIR-based detection systems. The Fresnel lens plays an important role by controlling infrared distribution before signals reach the sensor element. The 8605-12 helps achieve: More consistent infrared focusing Optimized sensing zone distribution Improved detection repeatability Better compatibility with PIR electronics Stable operation in indoor environments