Optical: systems and elements – Light interference – Produced by coating or lamina
Patent
1998-05-05
1999-10-19
Henry, Jon
Optical: systems and elements
Light interference
Produced by coating or lamina
359590, 362268, 362293, G02B 528, F21V 910
Patent
active
059698683
ABSTRACT:
A color filter plate includes a continuously-variable dichroic filter coating constituting a variable band-pass or variable band-reject filter having a spatially-modulated variable-density pattern formed in the coating, and provides continuously-variable hue and saturation characteristics along separate gradient axes. A color filter mechanism includes a sequential arrangement of rectangular or circular color filters, having continuously-variable band-pass or band-reject filter coatings, mounted in motorized carriages. One mechanism provides two-axis translation of the rectangular color filters while another mechanism provides translation and rotation of the circular color filters. A light projection system comprising a lamp with a reflector and a lens includes a color filter mechanism having sequential, continuously-variable band-pass and band-reject filters supported by motorized carriages mounted in a region where the beam diameter is small.
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Bornhorst James M.
Hutton Richard W.
Henry Jon
Vari-Lite Inc.
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