Optical Filter

- Aug 31, 2020-

Optical Filter

 

A filter that uses light interference to block unwanted incident light and obtains a specific wavelength through reflection or interference is called an optical filter.

Optical Filter

Optical filters are usually made of glass with one or more thin coatings on the glass. The type and thickness of the coating determine what wavelengths of light will destructively interfere and prevent entering the glass, and what wavelengths will pass through the glass.