US PATENT SUBCLASS 353 / 84
COLOR FILTER
Current as of: June, 1999
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DEFINITION
Classification: 353/84
(under the class definition) Subject matter including means in the optical path to block or absorb particular wavelengths of light.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7+, for stereoscopic projectors having color filters.
29, for an image projector plus additional means to direct light, which may be colored, on or near the projected image.
31+, for multicolor-picture projectors.
32, for a projector for lenticular film having a color filter. 55, for a projector having a heat filter.
SEE OR SEARCH CLASS
352, Optics: Motion Pictures,
42, for a method of motion-picture projecting including employment of a color filter.
359, Optics: Systems (Including Communication) and Elements,
885+, for filters, per se.
