Lens barrel attachment

Details Lens barrel attachment Lens barrel attachment

1992-05-20

1994-07-05

Sugarman, Scott J.

Optical: systems and elements

Lens

With support

359811, 359815, 354293, G02B 702, G03B 1700

Patent

active

053272927

ABSTRACT:
A lens barrel attachment including an attachment ring and a handle in which a click pin is housed. The attachment ring is rotatably fitted on a large-sized lens barrel. The handle is threadingly fitted in a handle hole formed in the attachment ring and extending in a radial direction thereof. The click pin is provided in an accommodation hole formed in the handle and urged by a spring to be engaged with engaging recesses formed on an outer surface of the lens barrel. The handle has a contact portion at the tip portion thereof. This contact portion is brought into frictional contact with the lens barrel to thereby fix the lens barrel to the attachment ring.

REFERENCES:
patent: 3270994 (1966-09-01), Machan et al.
patent: 4187020 (1980-02-01), Ishii et al.
patent: 4384767 (1983-05-01), Kawai
patent: 4525052 (1985-06-01), Kosugi et al.
patent: 4572612 (1986-02-01), Schlapp et al.
patent: 4789225 (1988-12-01), Nomura
patent: 5055864 (1991-10-01), Slikkers

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