Optical: systems and elements – Light control by opaque element or medium movable in or... – With rotating or pivoting element
Patent
1997-12-22
2000-01-04
Phan, James
Optical: systems and elements
Light control by opaque element or medium movable in or...
With rotating or pivoting element
359227, 359236, 359230, G02B 2602
Patent
active
060116404
ABSTRACT:
A high intensity light projector for stage, architectural and similar applications includes a controllable image quality projection gate providing advanced visual effects. The projection gate, capable of selectively scattering or transmitting incident light, may be constructed of an array of scattering liquid crystal material in combination with infrared and ultraviolet reduction means which provide in the high intensity beam, a stable thermal environment by minimizing the absorption of light by the projection gate. Additional thermal efficiency is provided by supplemental cooling means. Color control is also provided in the form of dichroic filter wheels forming cooperating adjustable low, high and band width filters including saturation control. A color measuring feedback sensor is also provided. An intensity measuring feedback sensor controls a spatially-modulated, variable-density, reflectively-coated dimming wheel. A programmable gobo system has provisions for gobo selection, orientation, and rotation.
REFERENCES:
patent: 4435047 (1984-03-01), Fergason
patent: 4443696 (1984-04-01), Taboada
patent: 4739396 (1988-04-01), Hyatt
patent: 4763993 (1988-08-01), Vogeley
patent: 4890208 (1989-12-01), Izenour
patent: 4914556 (1990-04-01), Richardson
patent: 5389982 (1995-02-01), Lee
English Translation of Abstract JP-62294230 dated Dec. 21, 1987.
English Translation of Abstract JP-4171480 dated Jun. 18, 1992.
English Translation of Abstract JP-5249431 dated Sep. 28, 1993.
English Translation of Abstract JP-2-96714 dated Apr. 9, 1990.
English Translation of Abstract JP-61-59316 dated Mar. 26, 1986.
English Translation of Abstract JP 2-253291 dated Oct. 12, 1990.
Phan James
Vari-Lite Inc.
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