Camera apparatus adapted for operation with auxiliary light source

Abstract

Abstract AN EXPOSURE CONTROL SYSTEM FOR USE IN PHOTOGRAPHIC APPARATUS WHICH IS ADAPTED FOR OPERATION WITH AN AUXILIARY SOURCE OF ILLUMINATION SUCH AS A FLASH LAMP. IN PARTICULAR, THE EXPOSURE CONTROL SYSTEM INCLUDES A RADIATION SENSITIVE ELEMENT DISPOSED TO RECEIVE ILLUMINATION FROM A SCENE AND A MECHANISM COUPLED TO THE RADIATION SENSITIVE ELEMENT FOR VARYING THE SIZE OF THE EXPOSURE APERTURE AS A FUNCTION OF THE SCENE RADIATION DIRECTED ONTO THE RADIATION SENSITIVE ELEMENT. IN A SECOND MODE OF OPERATION WHEREIN AN AUXILIARY SOURCE SUCH AS A FLASH LAMP IS USED, A COUPLING MECHANISM IS RENDERED OPERATIVE FOR COUPLING A FOCUSING MECHANISM ASSOCIATED WITH THE CAMERA LENS TO THE APERTURE ADJUSTING MECHANISM SO THAT IN THE FLASH MODE OF OPERATION, THE SUTTER MECHANISM IS SET AS A FUNCTION OF THE FOCUS DISTANCE. MORE SPECIFICALLY, THE APERTURE ADJUSTING MECHANISM TEND TO BE DRIVEN BY A MOTOR UNTIL IT ENGAGES THE COUPLING MECHANISM WHICH IS SET AS A FUNCTION OF THE FOCAL DISTANCE.

Inventors

• 👤 R Bresson

Bibliographic Details