Camera with focal length varying device

Details Camera with focal length varying device Camera with focal length varying device

1985-11-01

1987-02-17

Adams, Russell E.

35419512, G03B 300

Patent

active

046435549

ABSTRACT:
In a camera which has an automatic focusing device and is arranged to permit a change-over from one focal length of the photo taking optical system thereof to another, the focusing position of the automatic focusing device is arranged to vary in response to the focal length change-over of the photo taking optical system, so that the focusing operation can be always carried out appositely to the selected focal length of the optical system.

REFERENCES:
patent: 3618499 (1971-11-01), Harvey
patent: 4183639 (1980-01-01), Suwa
patent: 4238153 (1980-12-01), Imura
patent: 4300823 (1981-11-01), Yamamaka et al.
patent: 4367935 (1983-01-01), Kuge et al.
patent: 4505566 (1985-03-01), Noguchi
patent: 4536068 (1985-08-01), Kodaira
patent: 4572643 (1986-02-01), Akashi

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