Multimagnification mode optical system with rotating and transla

Details Multimagnification mode optical system with rotating and transla Multimagnification mode optical system with rotating and transla

1980-06-02

1982-10-12

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 8, 355 11, 355 51, G03B 2734, G03B 2740, G03B 2770

Patent

active

043536433

ABSTRACT:
A multimagnification mode optical system for projecting an image from an object plane to an image plane including a viewing platen, a lens, at least one reflecting surface on each of the object side and image side of the lens, the lens being mounted to move from a first position providing a first magnification to a second position providing a second magnification by simultaneously rotating and translating about a stationary lens shaft from said first position to said second position whereby the optical axis of the lens is also altered. In a specific application of the optical system the corner registration of the image at the image plane on a photosensitive surface mounted on a rotatable drum is maintained at both the first and second lens position.

REFERENCES:
patent: 3286587 (1966-11-01), Hayden et al.
patent: 3614222 (1971-10-01), Post et al.
patent: 3884574 (1975-05-01), Doi et al.
patent: 4007986 (1977-02-01), Komori et al.
patent: 4013361 (1977-03-01), Allis
patent: 4053221 (1977-10-01), Lynch
patent: 4118118 (1978-10-01), Barto, Jr.
patent: 4120578 (1978-10-01), Daniels
patent: 4135812 (1979-01-01), Kingsland
patent: 4142793 (1979-03-01), Schilling

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