Illuminating device and projector using it and built-in display unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 28, 2006
Grant Date -
Aug 29, 2002
app pub date -
May 24, 2001
filing date -
May 30, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An illuminating device comprising a light source for emitting a plurality of light beams (207, 208, 209) of different colors, a plurality of rotating beam scanners (102, 103, 104) and a plurality of scanning lenses (109, 110, 111). The beam scanners have spiral reflection surfaces (102, 103, 204) formed on the outer peripheries of cylindrical bodies, Each colored light beam is shone onto each reflection surface from a direction parallel to a rotating axis, and magnified by each scanning lens after reflected to scan an illuminated area with a plurality of beams of different colors one after another. Accordingly, the illuminating device can enhance scanning linearity, reduce noise due to a minimal windage loss, and decrease costs and power consumption.
First Claim
Family
International Classification(s)
Cited Art Landscape
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