Waterproof lens barrel

Optical: systems and elements – Lens – With variable magnification

Patent

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Details

359618, G02B 1514

Patent

active

060726407

ABSTRACT:
A waterproof lens barrel which includes at least one water-tight movable barrel which is movable along an optical axis, the water-tight movable barrel includes: an outer barrel that is in sliding contact with an annular sealing member; an inner barrel that is positioned inside said outer barrel; at least one through-hole formed on the outer barrel; and at least one stopper pin that is supported by the inner barrel, the stopper pin being snugly fitted in the through-hole so that no force in the radial direction is inflicted on the outer barrel by the stopper pin, and the relative movement of the inner and outer barrels in the direction of the optical axis is determined by the stopper pin and the through-hole.

REFERENCES:
patent: Re35679 (1997-12-01), Tanaka
patent: 5066965 (1991-11-01), Tanaka et al.
patent: 5077567 (1991-12-01), Hariguchi et al.
patent: 5212509 (1993-05-01), Kosako et al.
patent: 5243467 (1993-09-01), Tanaka
patent: 5305145 (1994-04-01), Tanaka
patent: 5335028 (1994-08-01), Kosaka
patent: 5754893 (1998-05-01), Nomura et al.

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