Symmetrical color changer system
First Claim
1. A color changer system including a source of white light forming a light beam having a beam axis of propogation and a beam aperture through which the light beam passes, the beam aperture having a center coextensive with the axis of propogation, comprising, in combination,first color filter means positioned adjacent to the beam aperture and second color filter means positioned adjacent to the beam aperture opposite to said first color filter means, said first and second color filter means being movable across the beam aperture orthogonal to the beam axis, wherein selected light waves are deleted in predetermined amounts in accordance with the positions of said first and second color filter means so as to enhance a particular color contained in said light beam, said first and second color filter means being simultaneously movable into the light beam symmetrical to the beam axis of propogation so that distribution of color saturation of the light beam is symmetrical about the center of the beam aperture during movement of said first and second color filter means;
- and each said first and second color filter means includes progressive variable filtering regions; and
said first and second color filter means being movable to overlapping positions wherein said filtering regions are positioned across the beam apertures so that the effect of color enhancement of said particular color is additive.
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Accused Products
Abstract
A color changer system including a pair of slidable color filter plates or a pair of rotatable color filter disks positioned on opposed side of a beam aperture through which a beam of white light passes. The pair of filter plates or filter disks are simultaneously movable or rotatable, respectively, across the beam aperature orthogonal to the beam axis so as to enhance a particular color. The movement of the filter plates or disks are movable into the beam symmetrical to the center of the beam aperture so that distribution of color saturation of the beam is symmetrical about the center of the beam aperture during movement of said first and second color filter means. Progressive variable filtering regions defining a plurality of color enhancing capacities either included diffused color filtering material or dichroic color filtering material. When the dichroic color filtering material is used, alternating clear and dichroic filtering strips are located in each filtering region. When the pair filter plates or filter disks overlap, the clear and dichroic filtering strips of each pair complement so that the lightwaves of the beam are filtered through only one of the pair of plates or strips.
33 Citations
20 Claims
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1. A color changer system including a source of white light forming a light beam having a beam axis of propogation and a beam aperture through which the light beam passes, the beam aperture having a center coextensive with the axis of propogation, comprising, in combination,
first color filter means positioned adjacent to the beam aperture and second color filter means positioned adjacent to the beam aperture opposite to said first color filter means, said first and second color filter means being movable across the beam aperture orthogonal to the beam axis, wherein selected light waves are deleted in predetermined amounts in accordance with the positions of said first and second color filter means so as to enhance a particular color contained in said light beam, said first and second color filter means being simultaneously movable into the light beam symmetrical to the beam axis of propogation so that distribution of color saturation of the light beam is symmetrical about the center of the beam aperture during movement of said first and second color filter means; and each said first and second color filter means includes progressive variable filtering regions; and
said first and second color filter means being movable to overlapping positions wherein said filtering regions are positioned across the beam apertures so that the effect of color enhancement of said particular color is additive.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification