Magnification change-over device for camera

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

1988-12-05

1989-08-29

Griffin, Donald A.

354152, 354214, G03B 300, G03B 118

Patent

active

048622028

ABSTRACT:
A magnification change-over device for a camera is provided with an incident optical path for the incidence of the light of an object to be photographed; a first optical path for guiding the object light incident on the incident optical path to a first aperture; a second optical path for guiding the object light incident on the incident optical path to a second aperture; changeover means for selection between the first and second optical paths; and optical means for differentiating the magnification of an image formed through the second aperture from that of an image formed through the first aperture.

REFERENCES:
patent: 1795626 (1931-03-01), Watkins
patent: 3608456 (1971-09-01), Hauser
patent: 3890626 (1975-06-01), Ettischer
patent: 4114171 (1978-09-01), Altman
patent: 4350421 (1982-09-01), Veda et al.

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