Distance estimation systems and method based on a two-state auto-focus lens
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United States of America Patent
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Apr 30, 2013
Grant Date -
Jul 19, 2012
app pub date -
Jan 18, 2011
filing date -
Jan 18, 2011
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Abstract
An electronic device including a camera adapted to capture images is provided. The camera includes a lens having a first focusing state and a second focusing state; an image sensor adapted to capture a first image of an object in the first focusing state and a second image of the object in the second focusing state. The electronic device further includes a memory configured to store instructions; and a processor coupled to the memory and the camera, wherein the processor is adapted to determine a distance to the object based on the first image and the second image. A lens system including an actuator to modify a configuration of the lens system is also provided, having a first and second focusing state; a memory; and a lookup table to estimate a distance from the lens system to an object.
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