Apparatus for attaching and detaching accessory of lens

Details Apparatus for attaching and detaching accessory of lens Apparatus for attaching and detaching accessory of lens

1995-02-28

1995-10-24

Blankenship, Howard B.

Optical: systems and elements

Prism

With reflecting surface

359611, G03B 1104

Patent

active

054614457

ABSTRACT:
An apparatus for detachably attaching an accessory to a lens barrel, wherein the front end of the lens barrel and the accessory are provided with engaging members which are engaged and disengaged only when a predetermined angular relationship between the lens barrel and the accessory is met. The accessory is provided with at least one roller which is rotatably supported by a shaft extending parallel to an optical axis of the lens barrel. At least one abutting surface is provided on the front end of the lens barrel, and comes into contact with the roller or rollers of the accessory during rotation of the accessory while in contact with the lens barrel.

REFERENCES:
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patent: 4357089 (1982-11-01), Okura et al.
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patent: 4939532 (1990-07-01), Takebayashi
patent: 5097280 (1992-03-01), Nomura
patent: 5117311 (1992-05-01), Nomura
patent: 5227825 (1993-07-01), Eguchi et al.
patent: 5274413 (1993-12-01), Nomura et al.

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