Illumination system for a dial of a timepiece
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 25, 2000
Grant Date -
N/A
app pub date -
Jan 5, 1998
filing date -
Jan 5, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wristwatch dial illumination system with a light guide beneath a light transmissive dial receiving light from an LED mounted on a PC board below the light guide. A pattern of white reflective dots on the bottom surface,of the light guide selectively ejects internally reflected light toward the dial and an absorption pattern of light absorbing material selectively absorbs ejected light, including the bright spot from the LED.
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