Mechanical mounting system for a zoom lens assembly

Details Mechanical mounting system for a zoom lens assembly Mechanical mounting system for a zoom lens assembly

1980-07-08

1983-06-07

Corbin, John K.

350255, G02B 710

Patent

active

043868290

ABSTRACT:
An operating mechanism for a zoom lens assembly is constructed with an integrally molded actuating sleeve rotatably fitted on the exterior surface of a tubular body of the assembly and held against axial movement, with a zoom lens cell being slideably fitted to the inner diameter of the tubular body. A camming connection is provided between the sleeve and the cell through a longitudinally elongated slot formed in the tube. The camming connection is formed from an inwardly directed helical cam protuberance having a rectangular cross-sectional configuration molded integrally with the sleeve, a slider freely fitted in the slot affixed to the cell, a cam follower in the form of a detent roller radially outwardly extending from the slider, a reaction roller axially movably mounted in a keyway in the slider, and a spring urging the detent and the reaction rollers to engage the cam protuberance at opposite radial shoulders thereof with a clamping effect.

REFERENCES:
patent: 3330615 (1967-07-01), Price
patent: 3506338 (1970-04-01), Holderbaum
patent: 3858225 (1974-12-01), Hasegawa et al.
patent: 4045128 (1977-08-01), Momiyama

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