Switching/moving structure of a zoom lens

Details Switching/moving structure of a zoom lens Switching/moving structure of a zoom lens

2005-10-11

2005-10-11

Perkey, W. B. (Department: 2851)

Photography

Having variable focal length of camera objective

Having focus operation

C359S695000, C359S700000, C359S701000

Reexamination Certificate

active

06954587

ABSTRACT:
A zoom lens barrel includes a linear guide ring; a moving frame having a male helicoid; a rotatable ring coupled to the linear guide ring; a female helicoid formed on the rotatable ring, and engaged with the male helicoid; a switching ring coupled to the rotatable ring; a switching member; and a switching-member moving groove including a first inclined section, a switching section, a second inclined section and an assembling section. The lead angle of the first inclined section is the same but has an opposite inclination to that of the female helicoid. The follower projection is inserted in the first inclined section. The switching section extends parallel to the optical axis. The second inclined section extends parallel to the first inclined section. The assembling section extends rearwards from a front end of the second inclined section to be parallel to the optical axis.

REFERENCES:
patent: 6369955 (2002-04-01), Enomoto et al.
patent: 6493512 (2002-12-01), Sato
patent: 6512638 (2003-01-01), Sato et al.
patent: 2004/0114252 (2004-06-01), Tanaka et al.
patent: 2004/0114253 (2004-06-01), Nomura et al.
patent: 2000-275518 (2000-10-01), None
patent: 2001-215381 (2001-08-01), None

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