Photographic camera with an adjustable semi-reflector for photographic film exposure

Claim 1

IN A PHOTOGRAPHIC CAMERA, THE COMBINATION CONSISTING ESSENTIALLY OF A PHOTOGRAPHIC OBJECTIVE PASSING AN IMAGE FORMING BEAM ALONG AN AXIS, A SEMI-REFLECTOR AND SEMI-TRANSMISSION ELEMENT ADJUSTABLY MOVABLE IN A PLANE INTERSECTING THAT AXIS BEHIND THE OBJECTIVE AT AN ANGLE NON-NORMAL TO THAT AXIS, SAID REFLECTOR AND TRANSMISSION ELEMENT HAVING A MULTIPLICITY OF AREAS MOVABLE BY ADJUSTMENT OF SAID ELEMENT INTO POSITION INTERSECTING THE IMAGE FORMING BEAM, SAID MULTIPLICITY OF AREAS HAVING RESPECTIVELY DIFFERENT REFLECTIVE AND TRANSMISSIVE RATIOS TO REFLECT AND TRANSMIT SELECTED MULTIPLE DIFFERENT PORTIONS OF THE IMAGE FORMING BEAM ALONG AXES AT AN ANGLLE TO EACH OTHER, AN ACTINIC SURFACE POSITIONED TO RECEIVE THE IMAGE BEAM ON ONE OF SAID RELATIVELY ANGULAR AXES, AN AN IMAGE VIEWING ELEMENT POSITIONED TO RECEIVE THE IMAGE BEAM ON THE OTHER OF SAID RELATIVELY ANGULAR AXES, ALL WHEREBY THE TOTAL INTENSITY OF THE IMAGE BEAM GOING TO THE ACTINIC SURFACE MAY BE MULTITUDINOUSLY VARIABLE TO ACCOMMODATE THAT INTENSITY TO THE REQUIREMENTS OF THE ACTINIC SURFACE WITHOUT VARYING THE TOTAL INTENSITY OF THE IMAGE FORMING BEAM PASSED BY THE OBJECTIVE, AND WHEREBY THE IMAGE VIEWING ELLEMENT RECEIVES SUBSTANTIALLY ALL OF THE LIGHT FROM THE OBJECTIVE BEAM NOT GOING TO THE ACTINIC ELEMENT.