(under subclass 350) Subject matter having a substrate and one or more superimposed coatings or laminae and which as a whole is designed to have significant absorbent or redirective properties in the infrared or ultraviolet portion of the spectrum.
(1) Note. Interference filters wherein the multiple reflected beams of various different frequencies will automatically interfere with one another upon reflection are classified in this subclass if significant IR/UV is specified.
(2) Note. Multi-layer absorption would not be interference since waves are not produced which interfere with one another.
(3) Note. Multi-layer absorbing elements are classifed in this subclass if significant IR/UV is specified.
(4) Note. Semiconductor elements are classifed in this subclass since they are not considered metals for subclass 360.
SEE OR SEARCH THIS CLASS, SUBCLASS:
580, for light interference produced by coating or lamina.
581, for transmissive coating on interference lens. 589, for selective wavelength interference.
590, for selective wavelength interference with another filter.
839, for mirrors with a transmissive property.
884, for mirrors with a selective absorption or transparent overcoating.
885+, for absorptive filters.
SEE OR SEARCH CLASS
204, Chemistry: Electrical and Wave Energy,
192.26+, for optical or photoactive specified deposition
material glow discharge sputter deposited coating.
