Patent ID: 8259220

Claim:
An imaging device comprising: an imaging element configured to carry out photoelectric conversion of subject image light incident through a lens and produce a video signal; an imaging element controller configured to control timing of readout of the video signal from the imaging element; a circular disk shutter configured to have a light-blocking part that blocks incident light on the imaging element and a passage part through which incident light on the imaging element passes, the shutter being driven to rotate by a motor; a shutter position detector configured to detect a rotational position of the shutter; and a shutter controller configured to control a rotational speed of the shutter and cause the imaging element controller to start readout of a video signal from the imaging element when the light-blocking part of the shutter is located in front of the imaging element based on information on the rotational position of the shutter, detected by the shutter position detector, wherein the shutter controller produces a frame start signal indicating start of a frame and outputs the frame start signal to the imaging element controller if it is determined by the shutter controller that the light-blocking part is disposed in front of the imaging element based on information on the rotational position of the shutter, detected by the shutter position detector, and upon receiving the frame start signal, the imaging element controller supplies a synchronization signal, for reading out a video signal corresponding to one screen from the imaging element, to the imaging element.