Magnification change-over device for camera

Details Magnification change-over device for camera Magnification change-over device for camera

1988-04-11

1989-03-07

Griffin, Donald A.

G03B 118

Patent

active

048110418

ABSTRACT:
A magnification change-over device for a camera having a common incident optical path for having rays of light from an object impinge thereinto, a first optical path for guiding the rays of light from the object, impinging into the common incident optical path, to a first aperture, a second optical path for guiding the rays of light from the object, impinging into the common incident optical path, to a second aperture, a change-over device for selecting either the first aperture or the second aperture, and a wide converter for rendering magnification of an image formed at the second aperture different from a magnification of an image formed at the first aperture.

REFERENCES:
patent: 1795626 (1931-03-01), Watkins
patent: 3608456 (1971-09-01), Hauser
patent: 3887930 (1975-06-01), Bresson
patent: 4114171 (1978-09-01), Altman
patent: 4352546 (1982-10-01), Iwata et al.
patent: 4527874 (1985-07-01), Ohmura
patent: 4549800 (1985-10-01), Maeda
Handbook of the Leica-System, Jul. 1982, p. 139, Focomat V35 Autofocus.

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