Mechanical mounting for zoom lens

Details Mechanical mounting for zoom lens Mechanical mounting for zoom lens

1984-01-24

1987-01-13

Corbin, John K.

G02B 704

Patent

active

046360425

ABSTRACT:
A mechanical mounting for a zoom lens having a tubular body in which is rotatably fitted a cam sleeve for controlling the axial movements of optical elements contributing to a zooming action. In order to keep the axial position of the cam sleeve relative to the body tube with a high precision accuracy as it rotates about the optical axis, a restraining mechanism is constructed in the form of rollers radially extending from the cam sleeve into a fitted circumferential interior recess of the body tube.

REFERENCES:
patent: 3506338 (1970-04-01), Holderbaum
patent: 3765748 (1973-10-01), Mito
patent: 4272160 (1981-06-01), Uesugi
patent: 4273423 (1981-06-01), Uesugi
patent: 4315670 (1982-02-01), Shigoku
patent: 4472032 (1984-09-01), Kamata et al.

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