Printed circuit board waveguide
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United States of America Patent
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-
Apr 9, 2002
Grant Date -
N/A
app pub date -
Mar 11, 1999
filing date -
Mar 11, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A printed circuit board is made of a light transmitting material and is used as a waveguide for light. The board may be coated on both surfaces with a light-reflecting material to improve waveguiding properties. Such a board is operative to replace the microlens and optical fiber common in laser diode packages to form an optical path to deliver optical energy to some sensor position. A sensor of optical energy need only be coupled to a window in one of the coatings or positioned at the edge of the board.
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