Pressure type lens tube for single lens reflex camera for incorp

Details Pressure type lens tube for single lens reflex camera for incorp Pressure type lens tube for single lens reflex camera for incorp

1975-05-23

1977-06-28

Gonzales, John

354274, G03B 902

Patent

active

040329429

ABSTRACT:
A lens tube for a single-lens reflex camera having a plurality of aperture blades normally pressed in the aperture-enlarging direction comprises an interlocking member operably associated with the aperture blades, a limiting member for stopping the interlocking member to determine the position of the blades for providing a desired aperture, a release means provided in interlocked relation with the shutter mechanism on the camera body and an operating member actuated from the outside to operate the interlocking member until the interlocking member is stopped by the limiting member during the initial stage of operation and to thereafter operate the release means. The lens tube can be incorporated in the conventional follow-up type aperture-controlled camera.

REFERENCES:
patent: 3706269 (1972-12-01), Uesugi
patent: 3820124 (1974-06-01), Taguchi et al.
patent: 3829872 (1974-08-01), Ueda et al.
patent: 3849787 (1974-11-01), Nahagawa
patent: 3864714 (1975-02-01), Sasaki

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