Patent ID: 8878907

Claim:
A monocular stereoscopic imaging device comprising: an imaging optical system including a taking lens including a zoom lens, and a diaphragm which forms a single aperture; a single imaging unit configured to continuously acquire a first image and a second image based on image signals output from an imaging sensor including a first pixel group and a second pixel group on which an image of a subject passed through a first area of the taking lens and an image of the subject passed through a second area of the taking lens are formed respectively; a diaphragm driving unit configured to change a degree of an aperture of the single aperture of the diaphragm; and a controlling unit configured to acquire an instruction of changing a focus distance, configured to drive the diaphragm through the diaphragm driving unit so as to increase the degree of the aperture when the zoom lens is moved in a direction of decreasing the focus distance in accordance with the acquired instruction of changing the focus distance.