Patent ID: 6670989
Filing Date: 2003-12-30
Classification: G02B

Abstract:
An optical system driving control device comprising:(a) a photo-taking optical system, said phototaking optical system including: a photo-taking optical element which is movable in a first optical axis direction thereof, and a first driving mechanism including a first stepping motor, for moving said phototaking optical element in the first optical axis direction; (b) a viewfinder optical system, said viewfinder optical system including: a viewfinder optical element which is movable in a second optical axis direction thereof, and a second driving mechanism including a second stepping motor for moving said viewfinder optical element in the second optical axis direction; (c) a first initial position detecting unit for detecting the initial position of said photo-taking optical element; (d) a second initial position detecting unit for detecting the initial position of said view finder optical element; and (e) a control unit, said control unit causing said first driving mechanism and said second driving mechanism to drive said phototaking optical element and said viewfinder optical element, respectively, to locate said photo-taking optional element and said viewfinder optical element at respective initial positions thereof in accordance with outputs from said first and second initial position detecting units, and, thereafter to move said photo-taking optical element and said viewfinder optical element to respective predetermined positions where a ratio in magnification of said photo-taking optical system to said viewfinder optical system becomes a predetermined value.