Scanned Image Projection System Employing Beam Folding Apparatus
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United States of America Patent
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Issued Date -
Feb 9, 2012
app pub date -
Aug 5, 2010
filing date -
Aug 5, 2010
priority date (Note) -
Abandoned
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Abstract
An imaging system (100) includes one or more light sources (101,102,103) configured to produce one or more light beams (104,105,106). An additional light source (111) produces an additional light beam (112), which may be a non-visible light beam like an infrared beam. A spatial light modulator (107) is configured to produce images (109) on a projection surface (110) by scanning the light beams and the additional light beam within an image cone (118) oriented in a first direction (119). A partial reflector (117) is disposed within the image cone (118) and is configured to pass at least a portion of the light beams and reflect at least a portion of the additional light beam within a second cone (120) oriented in a second direction (121).
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