Lens barrel

• US 7,259,923 B2
• Filed: 08/09/2004
• Issued: 08/21/2007
• Est. Priority Date: 08/12/2003
• Status: Expired due to Fees

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Shinohara, Junichi, Nuno, Katsuhiko, Ito, Kaoru, Tsurukawa, Ikuya, Etoh, Akihiro
• Primary Examiner(s): Ben; Loha
• Application Number:
  US10/913,549
• Publication Number:
  US 20050068638A1
• Time in Patent Office: 1,107 Days
• Field of Search: 359/696, 359/694, 359/811, 359/819, 359/829, 359/823, 359/824, 359/700, 359/704, 359/820, 359/822, 396/133, 396/72, 396/73, 396/85, 396/257, 403/329, 353/100, 353/101
• US Class Current: 359/819
• CPC Class Codes: G02B 7/02 for lenses supports for magnifying lenses G02B25/002
• CPC Class Codes: G02B 7/08 adapted to co-operate with a remote control mechanism

Abstract

A lens barrel, including, a moving frame (2) to hold a lens (8), a direct-advance ring (4) provided on an outer periphery of the moving frame and movable relative to the moving frame in an optical direction, a resilient member (6) provided between the moving frame and the direct-advance ring, and a control part (10) provided on the moving frame to control an amount of movement of the direct-advance ring in the optical direction.

Claims

1. A lens barrel comprising:

a fixing frame fixed on a mounted part of a body of an optical device;

a mounting member projected from an outer peripheral surface of the fixing frame and fixed on said mounted part by a fastening member; and

a resilient member disposed in a space formed between the mounted part and the mounting member in a compressed state,

wherein the resilient member is configured to be resiliently variable in an interval between the mounting member and the mounted part in an optical axis direction.

2. The lens barrel according to claim 1,

wherein said fastening member comprises a stepped screw, and

wherein said mounted part is formed with a stepped hole in which the stepped screw is fitted.

3. The lens barrel according to claim 1,

wherein said fixing frame is made of a resilient thermoplastic resin.

4. The lens barrel according to claim 3,

wherein said mounting member is integrally formed with the fixing frame made of the thermoplastic resin.

5. The lens barrel according to claim 1, including:

the fixing frame;

an exterior member engaged in a subject side of the fixing frame; and

a resilient member disposed between the fixing member and the exterior member.

6. An optical device comprising:

a body having a mounted part; and

a lens barrel having a fixing frame fixed on the mounted part of the body of the optical device;

a mounting member projected from an outer peripheral surface of the fixing frame and fixed on said mounted part by a fastening member; and

a resilient member disposed in a space formed between the mounted part and the mounting member in a compressed state,

wherein the resilient member is configured to be resiliently variable in an interval between the mounting member and the mounted part in an optical axis direction.