Waterproof lens barrel

Details Waterproof lens barrel Waterproof lens barrel

1998-12-31

1999-09-14

Epps, Georgia

Optical: systems and elements

Lens

With variable magnification

396 25, G02B 1514, G03B 1708

Patent

active

059531630

ABSTRACT:
In a waterproof lens barrel in which a water-tight movable barrel which moves in the optical a is direction includes inner and outer cylinders, and a space between the inner and outer cylinders is sealed by an annular seal member, the annular seal member is held by a seal member holding ring separate from the inner cylinder or the outer cylinder. The seal member holding ring is inserted in the outer cylinder, wherein the annular seal member is brought into elastic contact with the inner surface of the outer cylinder. The inner cylinder is fitted in and secured to the outer cylinder, wherein the seal member holding ring is located in front of the inner cylinder.

REFERENCES:
patent: 5066965 (1991-11-01), Tanaka et al.
patent: 5070348 (1991-12-01), Hayakawa et al.
patent: 5305145 (1994-04-01), Tanaka
patent: 5335028 (1994-08-01), Kosako
patent: 5701518 (1997-12-01), Honda et al.

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