Sensing direction and distance
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United States of America Patent
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Mar 7, 2017
Grant Date -
Oct 22, 2015
app pub date -
Jul 26, 2012
filing date -
Jul 26, 2011
priority date (Note) -
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Abstract
Technology described in this document can be embodied in an optical sensor that includes a rectangular array of at least four photodetector cells of substantially equal size. An opaque mask is affixed over the rectangular array. The opaque mask defines a substantially rectangular aperture for admitting light onto only a portion of the surface of each of the at least four photodetector cells, where the aperture can be centrally positioned over the rectangular array.
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