Senba is the specilist Fresnel lens manufacturer in China. We can offer the high quality products with best price. Our factory located in Henan, a central city of China, the cost will be more competitive, so that the price is extremely good.
The fresnel lens is a optical element, one side is smooth, another side is by a ring a part of concentric garden composition. Fresnel lens arrays designed for Passive Infrared Sensor. The optical surface increases lens sensitivity for PIR sensor application. All the PIR sensor must work with the Fresnel Lens.