Optical interference coatings and lamps using same

Details Optical interference coatings and lamps using same Optical interference coatings and lamps using same

G - Physics

02

B

88/0.21, 88/0.22

G02B 5/26 (2006.01) G02B 5/28 (2006.01) H01J 61/40 (2006.01)

Patent

CA 2017471

Optical interference coatings useful on lamps for transmitting visible light radiation at about 90% average from 400-770 nm and for reflecting infrared radiation comprise three spectrally adjacent multiperiod stacks of alternating high and low index of refraction layers. Compared to conventional filters, these filters have a greater tolerance to layer thickness variations incurred during manufacture with little or no color shift when viewed at non-normal angles.

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