PROJECTION DISPLAY HAVING DUAL MODE FUNCTION
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United States of America Patent
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Issued Date -
May 13, 2010
app pub date -
Feb 19, 2008
filing date -
Feb 20, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A projection display having a dual mode function is provided. The projection display includes: a driving unit controlling an entire operation; a light source unit; a polarization beam splitter splitting light provided from the light source unit into first and second polarized light beams; a first light modulation device located in a path through which the first polarized light beam provided from the PBS (polarization beam splitter), the first light modulation device modulating the first polarized light beam in response to a first image signal and providing the first image; a first projection lens unit magnifying and projecting the first image provided from the first light modulation device; a second light modulation device located in a path through which the second polarized light beam provided from the PBS, the second light modulation device modulating the second polarized light beam in response to a second image signal and providing the second image; and a second projection lens unit magnifying and projecting the second image provided from the second light modulation device.Accordingly, it is possible for the projection display to display two images by using a light source. Thus, it is possible to embody a small display having a dual mode function with low power consumption which is suitable to be used for a mobile device.
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