Patent ID: 6771438
Filing Date: 2004-08-03
Classification: G02B

Abstract:
An optical unit comprising a plurality of lenses, each of the lenses having a lens surface and an optical axis, and a lens-holding apparatus,the lens-holding apparatus including a plurality of lens frames holding at least one lens respectively, and a lens barrel, the lens frames having portions overlapping with each other in a radial direction orthogonal to the optical axis when the lens frames are arranged adjacent each other along the optical axis, the lens-holding apparatus being provided with a first clearance in the adjacent two lens frames between the overlap portion of one lens frame and the overlap portion of the other lens frame in a radial direction orthogonal to the optical axis, the lens-holding apparatus being provided with a second clearance in the radial direction between the lens surfaces of lenses held by the adjacent two lens frames, the first clearance being smaller than the second clearance, and the lens frames being arranged in the lens barrel.