Illumination – Photographic lighting – Plural light sources or light source supports
Patent
1995-07-18
1998-03-03
Cariaso, Alan
Illumination
Photographic lighting
Plural light sources or light source supports
362 9, 362231, 362240, 362251, 362293, 362295, G03B 1502
Patent
active
057227551
ABSTRACT:
This invention provides an improved illumination device (10) which provides light fluxes with continuously variable spectral content and luminosity. The illumination device (10) includes a power supply (20) which is contained in a housing (24) which has a front face (28). Light sources (30a, 30b & 30c) are mounted on the front face (28) of the housing (24) and are connected to the power supply (20). The light sources (30a, 30b & 30c) are disposed to emit light fluxes substantially in the direction (38) of a selected object in front of the illumination device (10). The illumination device (10) also includes a color screen (40a, 40b and 40c) associated with each light source (30a, 30b and 30c). The colored screens (40a, 40b and 40c) are mounted intermediate the light sources (30a, 30b and 30c) and the selected object in front of the illumination device (10) and disposed so that light fluxes emitted from the light sources (30a, 30b and 30c) are transmitted through the colored screens (40a, 40b and 40c) and toward the selected object. The illumination device (10) also includes continuously variable potentiometers connected to the power supply (20) and light sources (30a, 30b and 30c) for independently and selectively varying the light fluxes emitted from each of the light sources (30a, 30b and 30c), so that the luminosity and color saturation of the light fluxes projected toward the object can be varied.
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Cariaso Alan
Wiemelt Mark E.
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