The word dichroic is usually used about mirrors or colour filters that is transparent to some colour wavelengths but reflective to others.

The most common, widespread use of dichroic materials is in the halogen dichroic lamp used in spotlights. These lamps have a reflector that is reflective to visible light but transparent to infrared wavelengths.

Dichroic filters is also used in photography(for example dichroic heads in photographic printers) and in high quality digital cameras to split up the pictures in to their individual colour components before it is 'read' by CCD imagesensors.

Di*chro"ic (?), a. [See Dichroism.]

Having the property of dichroism; as, a dichroic crystal.

 

© Webster 1913.

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