Mechanism for waterproofing operation member of interchangeable

Details Mechanism for waterproofing operation member of interchangeable Mechanism for waterproofing operation member of interchangeable

1993-10-15

1996-01-02

Epps, Georgia Y.

Optical: systems and elements

Lens

With variable magnification

354 64, G03B 1708

Patent

active

054814065

ABSTRACT:
A waterproof operation mechanism of an interchangeable lens barrel having an operation member which is rotatably set around a periphery of the interchangeable lens barrel. A button engages with the operation member such that the button penetrates the operation member and protrudes outward from the operation member. The button functions to fix the operation member at a predetermined rotation position and to release the operation member from the predetermined rotation position. The interchangeable lens barrel includes a knurled part around its periphery, the knurled part being made of an elastic material and having a protruding portion integrally formed therewith to cover the button. Further, the operation member includes a fitting groove on a periphery of the operation member to prevent the knurled part from being displaced in a direction of an optical axis of the lens barrel.

REFERENCES:
patent: 4666274 (1987-05-01), Maeno
patent: 5066965 (1991-11-01), Tanaka
patent: 5325139 (1994-06-01), Matsumoto

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