G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
Systeme optique a reflexions pouvant etre adapte a l'appareil photographique, camera ou television permettant d'obtenir la reduction et la reproduction d'un espace avec perception du relief
Systeme optique a reflexions pouvant etre adapte a l'appareil photographique, camera ou television permettant d'obtenir la reduction et la reproduction d'un espace avec perception du relief