Lens changeover mechanism for use in photographic camera

Details Lens changeover mechanism for use in photographic camera Lens changeover mechanism for use in photographic camera

1983-08-10

1984-11-13

Mathews, A. A.

350422, G03B 300

Patent

active

044822286

ABSTRACT:
A lens changeover mechanism for use in a photographic camera, including a master lens and a conversion lens. The mechanism further includes a changeover ring, a lens barrel which is axially movably fitted into the changeover ring, a focusing member, a focus guide which is slidably supported, for focusing adjustment, by the lens barrel, a changeover member which is pivotally supported by a camera body, and an auxiliary focus guide which is supported by the changeover member.

REFERENCES:
patent: 3887930 (1975-06-01), Bresson
patent: 3890626 (1975-06-01), Ettischer
patent: 4099191 (1978-07-01), Danan
patent: 4110005 (1978-08-01), Bohm et al.
patent: 4119983 (1978-10-01), Tanaka
patent: 4204760 (1980-05-01), Kobayashi
patent: 4277158 (1981-07-01), Zawodny

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