Camera having a plurality of built-in lenses

Details Camera having a plurality of built-in lenses Camera having a plurality of built-in lenses

1982-02-26

1984-05-29

Adams, Russell E.

35419512, G03B 700

Patent

active

044511299

ABSTRACT:
A camera having two built-in lenses with selective control of the focal length, wherein a first focal length is obtained by the first lens optical system and, after the first lens optical system has been moved along a lens axis without causing movement of a device for receiving light from an object to be photographed, the second lens optical system is moved to a composite position with the first lens optical system so that a second focal length is obtained by the first and second lens optical systems.

REFERENCES:
patent: 3836934 (1974-09-01), Suzuki et al.
patent: 3887930 (1975-06-01), Bresson
patent: 4214829 (1980-07-01), Ohashi
patent: 4264175 (1981-04-01), Hayata et al.
patent: 4279493 (1981-07-01), Kobayashi

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