Cross-fading color filter and system
First Claim
1. A color filter plate comprising:
- a transparent substrate supporting a spatially-modulated, interference filter coating, said coating exhibiting a hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof.
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Accused Products
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 assembly includes a variable band-pass and a variable band-reject filter mounted in a co-planar arrangement, providing a continuous range of color filtration for spectral and non-spectral colors. A color filter mechanism includes a color filter assembly having either a rectangular arrangement or a circular arrangement of co-planar, continuously-variable band-pass and band-reject filters mounted in a motorized carriage. One mechanism provides two-axis translation of the rectangular color filter assembly while another mechanism provides translation and rotation of the circular color filter assembly. A light projection system comprising a lamp with a reflector and a lens includes a color filter mechanism having co-planar, continuously-variable band-pass and band-reject filters supported by a motorized carriage mounted in a region where the beam diameter is small.
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Citations
69 Claims
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1. A color filter plate comprising:
- a transparent substrate supporting a spatially-modulated, interference filter coating, said coating exhibiting a hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A color filter assembly comprising:
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a first color filter plate comprising a transparent substrate supporting a spatially-modulated, interference filter coating, said coating exhibiting a band-pass hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; and a second color filter plate comprising a transparent substrate supporting a spatially-modulated, interference filter coating, said coating exhibiting a band-reject hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; said first and second color filter plates being arranged in a single plane. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A color filter mechanism comprising:
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at least one color filter plate comprising a transparent substrate supporting a spatially-modulated, interference filter coating on a surface thereof, said coating exhibiting a hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; and a carriage supporting said color filter plate, said carriage being movable in two directions relative to said surface. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A light projection system comprising:
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a lamp coupled with a reflector such that when said lamp is energized, said lamp and reflector form a visible light beam focused upon a focal point; a color filter plate mounted adjacent to said focal point, said color filter plate comprising a transparent substrate supporting a spatially-modulated, interference filter coating on a surface thereof, said coating exhibiting a hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; a carriage supporting said color filter plate, said carriage being movable in two directions relative to said surface; and a lens disposed downstream of said color filter plate. - View Dependent Claims (32, 33, 34, 35, 36, 37)
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38. A light projection system comprising:
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a lamp coupled with a reflector such that when said lamp is energized, said lamp and reflector form a visible light beam focused upon a focal point; a first color filter plate mounted adjacent to said focal point, said color filter plate comprising a transparent substrate supporting a spatially-modulated, continuously-variable interference filter coating on a surface thereof, said coating exhibiting a continuously variable band-pass hue characteristic along a first gradient axis thereof, said coating exhibiting a continuously-variable saturation characteristic along a second gradient axis thereof; a second color filter plate comprising a transparent substrate supporting a spatially-modulated, continuously-variable interference filter coating on a surface thereof, said coating exhibiting a continuously-variable band-reject hue characteristic along a first gradient axis thereof, said coating exhibiting a continuously-variable saturation characteristic along a second gradient axis thereof a carriage supporting said color filter plates, said carriage being movable in two directions relative to said surface; a motor drive coupled to said carriage; and a lens disposed downstream of said filter plates. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. A color filter assembly comprising;
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a transparent substrate; a first spatially-modulated, interference filter coating supported by said substrate, said coating exhibiting a band-pass hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; and a second spatially-modulated, interference filter coating supported by said substrate, said coating exhibiting a band-reject hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; said first and second filter coatings being arranged adjacent to each other on said substrate. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53)
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54. A color filter mechanism comprising;
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a transparent substrate; a first spatially-modulated, interference filter coating supported by said substrate, said coating exhibiting a band-pass hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; and a second spatially-modulated, interference filter coating supported by said substrate, said coating exhibiting a band-reject hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; said first and second filter coatings being arranged adjacent to each other on said substrate; and a carriage supporting said color filter plate, said carriage being movable in two directions relative to said surface. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61)
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62. A light projection system comprising:
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a lamp coupled with a reflector such that when said lamp is energized, said lamp and reflector form a visible light beam focused upon a focal point; a transparent substrate; a first spatially-modulated, interference filter coating supported by said substrate, said coating exhibiting a band-pass hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a first gradient axis thereof; and a second spatially-modulated, interference filter coating supported by said substrate, said coating exhibiting a band-reject hue characteristic that varies along a first gradient axis thereof, said coating exhibiting a saturation characteristic that varies along a second gradient axis thereof; said first and second filter coatings being arranged adjacent to each other on said substrate; a carriage supporting said color filter plates, said carriage being movable in two directions relative to said surface; a motor drive coupled to said carriage; and a lens disposed downstream of said color filter assembly. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69)
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Specification