Patent ID: 7414801
Filing Date: 2008-08-19
Classification: G02B

Abstract:
1. A lens barrel for movably holding a lens group along an optical axis, comprising: a fixed barrel having an approximately cylindrical shape; a lens frame disposed inside of the fixed barrel for holding the lens group; at least one shaft engaging in the lens frame for guiding the lens frame in a direction parallel to the optical axis of the lens group; and a rotation regulating portion provided to a perimeter of the lens frame for regulating a rotation of the lens frame about the shaft, wherein the lens frame is disposed in the fixed barrel so that a center axis of the fixed barrel and the optical axis of the lens group do not coincide with each other, but are deflected in parallel, and the rotation regulating portion and the shaft, which is an axis of said rotation regulated by the rotation regulating portion, are disposed so that a central angle formed with respect to the center axis of the fixed barrel is less than 180 degrees.