Patent ID: 8390727

Claim:
An imaging unit adapted to detachably attach to an optical unit which comprises a first attachment/detachment portion adapted to detachably attach to an imaging optical system, an optical path division means, a finder optical system, a bottom surface located at a position on the body opposite from the finder optical system, and a second attachment/detachment portion; the imaging unit adapted to detachably attach to the optical unit through the second attachment/detachment portion, the imaging unit comprising: a third attachment/detachment portion disposed at a position corresponding to the second attachment/detachment portion; an imaging element; a protruding portion that protrudes forward from the third attachment/detachment portion, the protruding portion having an upper surface that contacts the bottom surface when the imaging unit is attached to the optical unit; a conversion optical system having a front side lens system contained in the protruding portion and a rear side lens system disposed between the third attachment/detachment portion; and a moving mechanism adapted to move the front side lens system to an optical axis of the rear side lens system.