Vari-focal camera

Details Vari-focal camera Vari-focal camera

1985-10-16

1988-02-16

Mathews, A. A.

350422, G03B 300

Patent

active

047258640

ABSTRACT:
In a vari-focal camera which has a photo-taking optical system including a main lens system and an auxiliary lens system and is arranged to be shiftable between at least two different focal lengths by moving the photo-taking optical system back and forth on a photo-taking optical axis in such a way as to cause the auxiliary lens system to move onto and out of the optical axis, a guide bar is arranged to allow a lens barrel unit which includes the photo-taking optical system, a shutter and a photo-taking lens focusing device to straightly move. The guide bar is fittingly engaged with a member secured to a camera body. The camera is further provided with an adjusting member for focusing the photo-taking optical system in each of preset positions in which the photo-taking lens has the different focal lengths.

REFERENCES:
patent: 4200377 (1980-04-01), Holderbaum
patent: 4214829 (1980-07-01), Ohashi
patent: 4397544 (1983-08-01), Yajima et al.

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