Camera with autofocusing device

Details Camera with autofocusing device Camera with autofocusing device

1978-12-08

1980-09-30

Hix, L. T.

354197, 354198, 354199, 354286, G03B 1322, G03B 1718

Patent

active

042252199

ABSTRACT:
In a camera having a photo-taking lens adapted to be preceded by an attachment lens to effect a change in focal length, an autofocusing device whose distance measuring portion operates with an optical system outside the photo-taking lens. The autofocusing device is provided with a sensing device responsive to the detection of the attachment lens for excluding the operation of the automatic focus adjustment from the focusing mechanism for the photo-taking lens.

REFERENCES:
patent: 3914034 (1975-10-01), Komine
patent: 3940777 (1976-02-01), Komine
patent: 3962711 (1976-06-01), Cutler, Jr.
patent: 4057327 (1977-11-01), Kumazawa
patent: 4083057 (1978-04-01), Quinn
patent: 4153903 (1979-08-01), Pizzuti et al.

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