Product Description

Product Description

fresnel lens arrays is designed for passive infrared sensor, the optical surfaces are made into different zones to increase lens sensitivity for IR light.

Compared to conventional bulky lenses, the Fresnel lens is much thinner, larger, and flatter, and captures more oblique light from a light source.

In each of these zones, the overall thickness of the lens is decreased, effectively dividing the continuous surface of a standard lens into a set of surfaces of the same curvature, with stepwise discontinuities between them. A Fresnel lens can be regarded as an array of prisms arranged in a circular fashion, with steeper prisms on the edges and a nearly flat convex center.

Product Feature

smooth outside in the surface, with zones in different sizes and concentric circles, to enhance the sensitivity of detector to the human IR light

 

Product Specification/Models

fresnel lens Made of HDPE With good quality Diameter:*4.5mm Focus:*5M/M Angle:**0degree
 

Application

lamps, switch and other equipments that use PIR sensor, etc.