Infrare light filter:Blue glass filter + photoresistor Assy

Posted by parson deng on

*Blue glass filter + photoresistor Assy

To avoid the Interference of ir lighting on/off  in security/monitor application, the blue glass filter+ photoresistor assy is developed.

The difference between blue glass and other filter is that that raw materials are different. The blue glass is made of blue glass material (ordinary filters are ordinary optical glass), and its function is to filter infrared light by "absorption". Because blue wavelength has higher Light transmittance rate, it has better penetration than red and orange glass filter, and it can filter infrared light above 630nm (but allow the rest light in a wide band from ultraviolet to infrared to pass through). 

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