Toren, McGeady and Stanger
Light measuring device for camera
 A light measuring device for a camera which can change between light measuring ranges is achieved by dividing a transparent light condensing member into two or more portions of different optical characteristics and electrooptically actuating one or more light shading members for shading the object light passing through the light condensing member to a sensor. 
Canon Kabushiki Kaisha
G G
G03B G03B
inventional inventional
Akira Hiroyasu Kazuhiko Makoto
Hiramatsu Murakami Arakawa Katsuma