Image projector system having a light source that includes at least four light emitting diode modules
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United States of America Patent
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-
Apr 6, 2004
Grant Date -
Feb 19, 2004
app pub date -
Mar 31, 2003
filing date -
Aug 15, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An image projector system includes a light source, a light-modulating device, and a projector lens set. The light source includes a rectangular housing formed with a light-transmissive output port and at least four light-transmissive input ports, at least four light emitting diode modules, and a mirror set mounted in the housing for directing light beam outputs of the light emitting diode modules that are transmitted into the housing through the light-transmissive input ports to pass through the light-transmissive output port for processing by the light-modulating device. The light beam output of each of the light emitting diode modules has a wavelength band within a range of from 400 to 700 nanometers, that is different from the other light emitting diode modules and that has a center wavelength spaced apart from that of the other light emitting diode modules by at least 20 nanometers.
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