Distance-measuring optical apparatus, distance-measuring method, distance-measuring system, in-vehicle imager, and in-vehicle driving support apparatus
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United States of America Patent
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Oct 16, 2007
Grant Date -
Feb 2, 2006
app pub date -
Jul 29, 2005
filing date -
Jul 30, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A distance-measuring optical apparatus for measuring a distance to an object as a target comprises an imaging optical system; an image sensor; a driving section for moving at least the imaging optical system substantially perpendicular to an optical axis; an image sensor control section for outputting a periodical timing signal for designating a timing at which the image sensor takes an object image; and a driving control section for controlling the driving section to reciprocate the imaging optical system. The timing signal is periodically output when the imaging optical system is located near two positions away from each other in a direction substantially perpendicular to the optical axis. The distance-measuring optical apparatus further comprises an image processing operation section for finding, through an operation, a distance from the imaging optical system to the object using the image signal when the imaging optical system is at each of the two positions.
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