Optical filter for measurement of combustion gases and method of

Details Optical filter for measurement of combustion gases and method of Optical filter for measurement of combustion gases and method of

1990-07-20

1992-08-11

Bovernick, Rodney B.

Optical: systems and elements

Having significant infrared or ultraviolet property

Multilayer filter or multilayer reflector

156107, 359589, 359590, G02B 528

Patent

active

051384850

ABSTRACT:
A measuring instrument that must transmit predetermined wavelengths of optical radiation has an optical filter assembly that can be conveniently manufactured. The optical filter assembly can be coated to provide optical coatings on either side of the substrate, and a masking layer can be deposited to encompass the peripheral edges of the optical coatings and exposed portions of the substrate to eliminate the problem of optical noise resulting from optical radiation contact with the edges of the coating layers.

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patent: 4487197 (1984-12-01), Hoyois
patent: 4593197 (1986-06-01), Miyatake et al.
patent: 5008143 (1991-04-01), Armanini

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