Lens barrel device

Details Lens barrel device Lens barrel device

2005-01-18

2005-01-18

Dang, Hung Xuan (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S706000

Reexamination Certificate

active

06844988

ABSTRACT:
A lens barrel device includes a lens mounted in a lens frame that is threaded into an annular adjusting ring. The adjusting ring is coupled using a bayonet to a lens barrel. The lens barrel includes first and second flanges on the inner periphery of the lens barrel that define grooves for receiving bayonet projections on the annular adjusting ring. The bayonet coupling structure of the annular adjusting ring includes semispherical projections for elastically engaging inner walls of the grooves and also includes a rotation regulating stopper for engaging an end wall of an opening in one of the inner flanges so as to regulate rotation of the annular adjusting ring, and hence the lens, relative to the lens barrel. The end wall includes a groove for receiving a jig that can release the bayonet coupling structure of the annular adjusting ring from the lens barrel.

REFERENCES:
patent: 5502597 (1996-03-01), Estelle et al.
patent: 5537262 (1996-07-01), Aoki et al.
patent: 6416240 (2002-07-01), Johnson
patent: 6643074 (2003-11-01), Nomura et al.

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