Holding device for a lens of an interchangeable lens assembly

Details Holding device for a lens of an interchangeable lens assembly Holding device for a lens of an interchangeable lens assembly

1978-09-06

1980-10-07

Evans, F. L.

G02B 702

Patent

active

042265053

ABSTRACT:
A diaphragm linkage device for interchangeable lenses wherein more than three column-shaped guide members with a groove consisting of plastic material with a small friction coefficient are provided around the optical axis of the barrel for the interchangeable lens. A diaphragm linkage ring is adapted in the grooves in such a manner that by means of the guide members the diaphragm linkage ring is carried in the direction of thrust and in the radial direction.

REFERENCES:
patent: 2095657 (1937-10-01), Burgess

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