Lens Barrel

• Main Author: Koiwai, Tamotsu
• Format: Patent
• Language: English
• Published: 07.08.2003

A lens barrel having lens holding frames for holding a plurality of lenses is composed of a first lens, a second lens, a lens holding frame holding the first and second lenses, having a first opening disposed at one end in correspondence to the first lens, and having a second opening disposed at the other end in correspondence to the second lens, first abutment portions prescribing the position of the first lens in an optical axis direction on the first opening side and disposed at a plurality of positions around the inner periphery of the lens holding frame, a second abutment portion prescribing the position of the second lens in the optical axis direction on the second opening side, first engagement portions disposed at a plurality of positions around the inner periphery of the lens holding frame on a side nearer to the first opening than the first and second abutment portions and engaged with the first lens, and a second engagement portion disposed around the inner periphery of the lens holding frame on a side nearer to the second opening than the first and the second abutment portion and engaged with the second lens, wherein the first engagement portions and the first abutment portions are disposed at different positions in the circumferential direction of the lens holding frame.