Electric contact arrangement for individual objectives

Details Electric contact arrangement for individual objectives Electric contact arrangement for individual objectives

1985-05-16

1987-03-31

Adams, Russell E.

G03B 1700

Patent

active

046538895

ABSTRACT:
A lens for a photographic camera adapted to be mounted on a camera body, has a lens barrel, a lens mount secured on the lens barrel, and at least one contact for transmitting information to the camera body. The contact has first and second contiguous portions independently movable into and out of the lens mount. A first spring urges the first portion of the contact out of the lens mount. A second spring independent of the first spring urges the second portion of the contact out of the lens mount. Preferably, the first portion of the contact is a hollow cylinder, the second portion of the contact fits in the hollow of the first portion, and the ends of the first and second portions facing away from the lens mount are both convex and smoothly continuous at their convex ends.

REFERENCES:
patent: 4357089 (1982-11-01), Okura et al.
patent: 4372663 (1983-02-01), Oshima
patent: 4417798 (1983-11-01), Ohkura et al.
patent: 4420239 (1983-12-01), Yasuyuki et al.
patent: 4448509 (1984-05-01), Katsuma et al.
patent: 4457608 (1984-07-01), Komoto et al.
patent: 4469422 (1984-09-01), Kimura et al.
patent: 4582408 (1986-04-01), Miki et al.

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