| 摘要 |
A bayonet mount structure for an interchangeable photographic lens unit comprises cooperable lens unit and camera mounts with an optimum arrangement of bayonet pawls, a lock slot and pin for determining rotational position, coupling shafts through which a driving force for auto-focusing is transmitted to the lens unit, electrical contacts for transmitting electrical signals between the lens unit and the camera body, and a mechanical signal surface and signal detector for transmitting optical performance information, such as minimum F-number of the lens unit, to the camera body.
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