Lens unit and a camera incorporating the same lens unit

Details Lens unit and a camera incorporating the same lens unit Lens unit and a camera incorporating the same lens unit

2007-07-10

2007-07-10

Spector, David (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S819000

Reexamination Certificate

active

11174770

ABSTRACT:
A lens unit in which at least one of a subject side lens group and an image side lens group is moved toward an image side to be retracted along an optical axial direction, including a subject side lens group supporting frame to support the subject side lens group, an image side lens group supporting frame to support the image side lens group, a guide member to guide the image side lens group supporting frame from a predetermined position on the subject side to the image side by a predetermined length in parallel to an optical axis, and a moving and displacing device to move the image side lens group supporting frame from the predetermined position on the subject side to the image side by length longer than the predetermined length in parallel to the optical axis, and displace the image side lens group supporting frame from an optical path.

REFERENCES:
patent: 5680255 (1997-10-01), Imanari
patent: 5995302 (1999-11-01), Ito
patent: 6031998 (2000-02-01), Shono
patent: 6778335 (2004-08-01), Takanashi
patent: 11-109203 (1999-04-01), None
patent: 11-258676 (1999-09-01), None
patent: 2003-149723 (2003-05-01), None

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