Interchangeable lens barrel with signal transfer contacts

Details Interchangeable lens barrel with signal transfer contacts Interchangeable lens barrel with signal transfer contacts

1982-09-09

1984-05-15

Mathews, A. A.

3542891, 350257, G03B 1700, G03B 1714

Patent

active

044485093

ABSTRACT:
An interchangeable lens barrel includes connection terminals on a part of the lens barrel for sending and receiving electrical signals to and from a photographic apparatus. The lens barrel part is provided with a mechanism for protecting the connection terminals by covering the terminals when the lens barrel is removed from the photographic apparatus. When the lens barrel is mounted on the photographic apparatus, the protecting mechanism is retracted from the terminals to allow for connection with corresponding terminals on the photographic apparatus.

REFERENCES:
patent: 4104649 (1978-08-01), Tanaka et al.
patent: 4118713 (1978-10-01), Murakami et al.
patent: 4357089 (1982-11-01), Okura et al.
patent: 4372663 (1983-02-01), Oshima

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