| 摘要 |
A three-dimensional image capturing device comprises an imaging device, such as a CCD, having a plurality of photo-diodes, a vertical transfer unit and a substrate. An electric charge discharging signal and an electric charge transfer signal are periodically output, respectively. Due to the electric charge discharging signal, unwanted charge accumulated in the photo-diodes is discharged to the substrate. A distance measuring light beam is radiated on a measurement subject, and a reflected light beam from the measurement subject is sensed by the CCD, so that electric charge, corresponding to distance information from the device to the measurement subject, is accumulated in the photo-diodes. The electric charge is transferred to a vertical transfer unit due to the electric charge transfer signal. By starting an output of the electric charge transfer signal at the same time as the end of the output of the electric charge discharging signal, electric charge accumulated in the photo-diodes in the transfer operation is sensed to correct the distance information obtained by the CCD.
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