Patent ID: 6967784
Filing Date: 2005-11-22
Classification: G02B

Abstract:
1. A lens barrel mechanism comprising: a first optical unit; a second optical unit; and a bellows-shaped unit for performing light blocking and dust proof, said bellows-shaped unit being disposed between said first optical unit and said second optical unit so as to be expanded and contracted interlocking with relative movement in an optical axial direction between said first optical unit and said second optical unit; wherein said bellows-shaped unit is formed in a shape in conformity with the shape of inside surface of the second optical unit viewed from its front side so as to be movable relative to said second optical unit in the optical axis direction having a clearance therebetween, and one end of said bellows-shaped unit is fixed to said first optical unit, and wherein the movement of said bellows-shaped unit in the optical axial direction relative to said second optical unit is regulated by different regulating portions of said second optical unit between cases where said bellows-shaped unit is contracted and where said bellows-shaped unit is expanded.