Interchangeable lens barrel structure

Details Interchangeable lens barrel structure Interchangeable lens barrel structure

1974-08-16

1976-07-06

Hayes, Monroe H.

354286, G03B 720

Patent

active

039685047

ABSTRACT:
This invention relates to a composite barrel of the mount for an interchangeable lens which is to be used with a motion picture camera or still camera. An interchangeable lens barrel attachable to the camera body is divided into two sections, one of which is for the mount of a front assembly of a lens system and another section which is for the mount of a rear lens assembly thereof. The rear barrel section is constructed as including a main connector arranged at the rear end to be detachably coupled with the connector of the camera body, an intermediate connector arranged at the front end, a number of tandem connection terminals arranged in a space within the main connector for connection with the corresponding number of electric connection terminals of the camera body, a diaphragm device including drive means therefor connected to the tandem connection terminals, and the rear lens assembly including an image-forming optic arranged behind the diaphragm device. The front lens barrel section is constructed as including a connector arranged at the rear end to be detachably coupled with the intermediate connector of the rear barrel section and the front lens assembly including a focusing member and the like. Such construction and arrangement of the front and rear sections of a composite barrel permits not only the attachment and detachment of an interchangeable lens to and from the camera body but also selection of front lens assemblies of different type in the individual front barrel sections for attachment to the rear barrel section.

REFERENCES:
patent: 3486434 (1969-12-01), Suzuki
patent: 3722390 (1973-03-01), Schlapp

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