COMBINED LIGHT SOURCE FOR PROJECTION DISPLAY

COMBINED LIGHT SOURCE FOR PROJECTION DISPLAY

High pressure mercury arc lamps are commonly used as the illumination source in many projection systems. Such lamps may be deficient in either output power or spectrum, and so it is desirable to combine the light from the lamp with light from a second light generator. The second light generator may...

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Hauptverfasser: ENGLISH R. EDWARD JR, MAGARILL SIMON, ARDASHNIKOV BORIS
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator ENGLISH R. EDWARD JR
MAGARILL SIMON
ARDASHNIKOV BORIS
description High pressure mercury arc lamps are commonly used as the illumination source in many projection systems. Such lamps may be deficient in either output power or spectrum, and so it is desirable to combine the light from the lamp with light from a second light generator. The second light generator may be another mercury lamp or a solid state source, such as one or more light emitting diodes. Different ways of combining light from two light generators are described. The second light source may be an arrangement of a number of red LEDs that supplements the red light produced by the mercury light. A tunnel integrator may be used to homogenize the combined light beam and to reduce the angular separation between the light beams from the two light generators. ® KIPO & WIPO 2007
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
title COMBINED LIGHT SOURCE FOR PROJECTION DISPLAY
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