CONTROL AND SWITCH DEVICE FOR INNER LIGHT PATH OF LASER DISTANCE METER
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United States of America Patent
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Issued Date -
Mar 7, 2013
app pub date -
Aug 31, 2012
filing date -
Sep 5, 2011
priority date (Note) -
Abandoned
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Abstract
A control and switch device for an inner light path of a meter distance meter includes: a generating device for emitting a polarized light; a liquid crystal box for deflecting the polarized light emitted from the generating device; a transparent medium positioned near the Brewster's angle formed by an emergent light emitted from the liquid crystal box; and a polarizer positioned in the direction of an emergent light emitted from the transparent medium.
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