Illumination device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 7, 2003
Grant Date -
Jan 31, 2002
app pub date -
Apr 8, 1999
filing date -
Apr 10, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An illumination device used in a printing head of a printer, which is capable of switching color of light emitted from a light source quickly. The illumination device has a color wheel that includes at least three grass panels having a fan-like shape and switches the color of light by rotating. The grass panels of the color wheel are supported by a circumferential ring at these exterior circumference. Thereby, the grass panels are hard to be damaged even when the color wheel is rotated at a high speed so as to switch the color of light quickly.
First Claim
Family
International Classification(s)
Cited Art Landscape
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