Optical: systems and elements – Having significant infrared or ultraviolet property – Multilayer filter or multilayer reflector
Patent
1991-08-08
1993-12-14
Lovering, Richard D.
Optical: systems and elements
Having significant infrared or ultraviolet property
Multilayer filter or multilayer reflector
252582, 252584, 252587, 359356, 359885, 359890, F21V 904, G02B 522, G02C 710
Patent
active
052708543
ABSTRACT:
A solid state form of a dye-solution absorption filter is disclosed. Physical vapor depositable (i.e., evaporable) dyes are codeposited with a polyester matrix in a vacuum system to randomly disperse dye molecules in a solid dilutant. The dyes are selected to absorb at the wavelengths of interest. Dilution in a transparent matrix affords narrow band absorption and good out of band transmittance. Multilayer configurations allow absorption of a plurality of wavelengths. The filter coating conforms to curved and sharply contoured surfaces and layers only 10 microns thick afford very high absorptance.
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Greenlaw David
Lee James C.
Lo Sau K.
Honeywell Inc.
Lovering Richard D.
Shudy Jr. John G.
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