Big size optical fingerprint prism for four fingers scanner 103S800

Specifications

This finerprint prism mainly used in capturing system and input system of the fingerprint device,

Specfication:

Material	Optical glass,Fused silica, etc
Dimension Tolerance	±0.02mm
Angular Accuracy	±3'
Surface Quality	40/20
Surface Accuracy	λ/5
Clear aperture	>90
Coating	Reflective Coating,AR   Coating

 

1. Products:This prism mainly used in capturing system and input system of the fingerprint device, now it is the most widely used prism in fingerprint device.

 

2,Principle:After the LED light going through the uniform frosting surface of the prism, it became a kind of uniform light, when one's finger touch the interface of the capturing system, the fingerprint data will enter into the system through the light path, then  the capturing work finished.

 

3. Advantage:This kind of prism belongs to low-end fingerprint device, which with a bit simple light path, So, the whole capturing system cost is relatively low.

 

Production line: