Variable focus camera

Details Variable focus camera Variable focus camera

Filed on

1987-06-10

Date issued

1988-12-06

Examiner

Adams, Russell E.

Other Related Categories

35419512, 354402, 354187, 354485, G03B 300

Type

Patent

Status

active

Patent number

047898755

Description

ABSTRACT:
Variable focus camera includes primary and secondary lens systems, in which only the primary lens system is used for wide angle shots while the combination of the primary with the secondary lens system is used for telephoto shots.
The variable focus camera can exactly and positively control the focus change region, the automatic focusing region and other regions.

REFERENCES:
patent: 4214829 (1980-07-01), Ohashi
patent: 4519691 (1985-05-01), Yamada et al.
patent: 4525050 (1985-06-01), Ohashi
patent: 4529283 (1985-07-01), Oshima et al.
patent: 4540264 (1985-09-01), Daitoku et al.
patent: 4547053 (1985-10-01), Tobler
patent: 4597657 (1986-07-01), Wakabayashi
patent: 4643555 (1987-02-01), Wakabayashi
patent: 4669848 (1987-06-01), Wakabayashi

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