Patent ID: 8002483
Filing Date: 2011-08-23
Classification: G03B,H04N

Abstract:
1. A lens barrel comprising a barrel holding an optical system, a plurality of barrel-side mount projections fitting the barrel on a photographic device having a rectangular shaped imaging device and a rectangular shaped opening which is provided with the photographic device at a position nearer to an object side than the rectangular shaped imaging device and which introduces photographing light to said rectangular shaped imaging device, and a cylindrical member holding the barrel-side mount projections provided along a circumferential direction of an optical axis, wherein each side of the rectangular shaped opening is parallel to a corresponding side of the rectangle shaped imaging device, said rectangular shaped imaging device is placed inside of the rectangular shaped opening when viewed along the optical axis direction, each of the barrel-side mount projections is placed outside of the sides of the rectangular shaped opening to avoid corners of the rectangular shaped opening when viewed along the optical axis direction, and the cylindrical member is placed inside the corners of the rectangular shaped opening when viewed along the optical axis direction.