Lens device

Details Lens device Lens device

2011-08-02

2011-08-02

Mack, Ricky L (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S823000

Reexamination Certificate

active

07990627

ABSTRACT:
A second fixed cylinder includes a lens attachment portion having straight-ahead grooves provided therein and a guide groove arrangement portion having a first guide groove and a second guide groove provided therein. A second rotating cylinder rotatably supported by the second fixed cylinder includes a cam groove arrangement portion having cam grooves provided therein and a claw arrangement portion having a first claw portion (third claw portion) fitted to the first guide groove and a second claw portion fitted to the second guide groove. The first guide groove and the second guide groove are arranged so as to deviate from each other in the axial direction. Therefore, the operation range of the second rotating cylinder is not regulated by the movement range of the first claw portion, and a wide operation range of the second rotating cylinder is ensured.

REFERENCES:
patent: 6853499 (2005-02-01), Iwasaki
patent: 2002/0135902 (2002-09-01), Nomura et al.
patent: 2004/0130803 (2004-07-01), Iwasaki
patent: 2007/0268596 (2007-11-01), Aiba et al.
patent: 2009/0059390 (2009-03-01), Koyama et al.
patent: 1857850 (2007-11-01), None
patent: 2007-310228 (2007-11-01), None
Extended European Search Report in European Application No. 10176854.7 and mailed Jan. 21, 2011.

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