Optical device
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United States of America Patent
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N/A
Issued Date -
Apr 19, 2007
app pub date -
Jul 14, 2006
filing date -
Oct 13, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided is an optical device capable of detecting a breakage of a housing that accommodates an optical system at an early stage and with reliability. The optical device includes a housing having an optical window which is optically transparent and an optical system that is accommodated in the housing and projects/receives light through the optical window, and has a construction in which a electrically conducting region is provided to the optical window of the housing and a breakage of the optical window is detected based on an electric change of the current-carrying region.
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