Patent ID: 9621882
Date: 2017-04-11
CPC Classifications: G03B,H04N

Claim:
1. A calibration device, comprising: controller circuitry that calibrates a center of a movable range of an optical element to a center position between a first position and a second position; wherein the calibration device (i) receives positional information of the optical element detected by a position detection device and (ii) calibrates the movable range of the optical element moving, with driving force provided by a drive device, between a first end and a second end symmetrical to the first end with respect to a reference point, the movable range being calibrated on the basis of positional information of the optical element, the first end and the second end each being an inner wall of a housing of the calibration device, and the controller circuitry calibrates the center of the movable range of the optical element to the center position between the first position and the second position when an initial position of the optical element does not coincide with the reference point, the first position being closer to the first end than to the initial position of the optical element and closest to the first end in a range where the optical element is movable with an output within a rated output of the drive device, the second position being indicated by the positional information detected by the position detection device and being a position at which the optical element comes in contact with the second end.