Light propagation time camera system having signal path monitoring
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United States of America Patent
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Oct 4, 2016
Grant Date -
May 16, 2013
app pub date -
Jul 28, 2011
filing date -
Jul 28, 2010
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Abstract
A time-of-flight camera system includes a photosensor having at least one receiving pixel and a source of illumination. A modulator is configured to provide a modulation signal to the photosensor and to the source of illumination. A control sensor is connected to at least one reference light source or an electric mixer. The control sensor is disposed in a vicinity of the source of illumination such that the control sensor receives at least a portion of the radiation emitted by the source of illumination. The control sensor is configured to provide an electric output signal that substantially matches an intensity-over-time curve of the received radiation.
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