The S9004 Fresnel Lens is an optical component made from HDPE plastic, ideal for PIR motion sensors, LED lighting systems, smart home devices, security alarms, and human motion switches. While Fresnel lenses can be made from glass or plastic, most PIR sensors use the plastic variant for its light weight and versatility.

Senba has been a trusted Fresnel lens manufacturer for over 15 years, offering custom designs with various detection angles, sizes, and sensing ranges to meet specific application needs.

The Fresnel lens features a smooth surface on one side and a concentric ring pattern on the other, forming a segmented optical array. This structure enhances the sensitivity and accuracy of Passive Infrared (PIR) sensors by effectively focusing infrared radiation.

Fresnel lenses are essential for PIR sensors, delivering high performance and cost-effectiveness compared to traditional optical lenses.