Stereoscopic optical viewing system with a shutter element adjacent the object lens

Claim 2

AN OPTICAL APPARATUS COMPRISING, A VIEWING SCREEN; MEANS FOR PRESENTING IN ALTERNATE TIME SEQUENCE LEFT AND RIGHT HAND VIEW IMAGES OF AN OBJECT ON SAID VIEWING SCREEN; AN OBJECT LENS ARRANGED TO FORM AN IMAGE OF SAID VIEWING SCREEN; A FIELD LENS IN AXIAL ALIGNMENT WITH SAID OBJECT LENS, SAID FIELD LENS AND SAID OBJECT LENS BEING ARRANGED TO FORM AN EXIT PUPIL HAVING A DIAMETER SUFFICIENTLY LARGE TO INCLUDE WITHIN IT BOTH THE LEFT AND RIGHT HAND EYES OF AN OBSERVER; SHUTTER ELEMENT DISPOSED INTERMEDIATE SAID OBJECT LENS AND SAID FIELD LENS, SAID SHUTTER ELEMENT BEING FORMED WITH AN OPAQUE PORTION ADAPTED TO MASK ONE-HALF OF SAID OBJECT LENS, MEANS FOR OPERATING SAID SHUTTER TO ALTERNATELY MASK THE LEFT AND RIGHT HAND HALVES OF SAID OBJECT LENS, SAID MEANS FOR PRESENTING IMAGES BEING OPERATED IN CONJUNCTION WITH SAID SHUTTER ELEMENT SUCH THAT LEFT HAND IMAGES ARE PRESENTED ONLY WHEN SAID SHUTTER IS MASKING ONE HALF OF SAID OBJECT LENS AND RIGHT HAND IMAGES ARE PRESENTED ONLY WHEN SAID SHUTTER IS MASKING THE OTHER HALF OF SAID OBJECT LENS.

Claim 3

APPARATUS FOR PROVIDING A STEREOSCOPIC Z-RAY IMAGE OF AN OBJECT COMPRISING, AN IMAGE FORMING SCREEN; FIRST AND SECOND X-RAY SOURCES, SAID FIRST X-RAY SOURCE BEING DISPOSED TO PROJECT ON SAID IMAGE FORMING AN X-RAY IMAGE OF SAID OBJECT PROJECTED FROM FIGHT, SAID SECOND X-RAY SOURCE BEING ADAPTED TO PROJECT ON SAID IMAGE SCREEN AN X-RAY IMAGE PROJECTED FROM THE LEFT OF SAID OBJECT; AN OBJECT LENS ADAPTED TO FROM AN IMAGE OF SAID IMAGE SCREEN; A FIELD LENS DISPOSED WITH RESPECT TO SAID OBJECT LENS IN SUCH A FASHION AS TO PROVIDE AN EXIT PUPIL HAVING A DIAMETER SUFFICIENTLY LARGE TO INCLUDE WITHIN IT BOTH THE EYES OF THE OBSERVER; A SHUTTER ELEMENT DISPOSED INTERMEDIATE SAID OBJECT LENS AND SAID FIELD LENS, SAID SHUTTER ELEMENT HAVING AN OPAQUE PORTION ADAPTED WHEN IN ONE POSITION TO MASK THE LEFT HAND HALF OF SAID OBJECT LENS AND WHEN IN ANOTHER POSITION TO MASK THE RIGHT HAND HALF OF SAID OBJECT LENS; MEANS FOR ALTERNATELY ACTUATING PRESENT LEFT AND SAID SECOND X-RAY SOURCES TO ALTERNATELY PRESENT LEFT AND RIGHT HAND X-RAY IMAGES TO SAID IMAGE FORMING SCREEN; MEANS FOR OPERATING SAID SHUTTER MEMBER TO ALTERNATELY MASK SAID LEFT AND SAID RIGHT HAND HALF OF SAID OBJECT LENS, SAID SHUTTER OPERATING MEANS AND SAID X-RAY SOURCE ACTUATING MEANS BEING OPERATED IN CONJUNCTION SUCH THAT SUCH SHUTTER MEMBER IS MASKING SAID RIGHT HAND HALF OF SAID OBJECT LENS WHEN SAID FIRST X-RAY SOURCE IS ACTUATED AND SAID SHUTTER MEMBER IS MASKING SAID LEFT HAND HALF OF SAID OBJECT LENS WHEN SAID SECOND X-RAY SOURCE IS BEING ACTUATED.

Claim 4

APPARATUS FOR PROVIDING A STEREOSCOPIC Z-RAY IMAGE OF AN OBJECT COMPRISING, AN IMAGE FORMING SCREEN; FIRST AND SECOND X-RAY SOURCES, SAID FIRST X-RAY SOURCE BEING DISPOSED TO PROJECT ON SAID IMAGE FORMING AN X-RAY IMAGE OF SAID OBJECT PROJECTED FROM FIGHT, SAID SECOND X-RAY SOURCE BEING ADAPTED TO PROJECT ON SAID IMAGE SCREEN AN X-RAY IMAGE PROJECTED FROM THE LEFT OF SAID OBJECT; AN OBJECT LENS ADAPTED TO FROM AN IMAGE OF SAID IMAGE SCREEN; A FIELD LENS DISPOSED WITH RESPECT TO SAID OBJECT LENS IN SUCH A FASHION AS TO PROVIDE AN EXIT PUPIL HAVING A DIAMETER SUFFICIENTLY LARGE TO INCLUDE WITHIN IT BOTH THE EYES OF THE OBSERVER; A SHUTTER ELEMENT DISPOSED INTERMEDIATE SAID OBJECT LENS AND SAID FIELD LENS, SAID SHUTTER ELEMENT HAVING AN OPAQUE PORTION ADAPTED WHEN IN ONE POSITION TO MASK THE LEFT HAND HALF OF SAID OBJECT LENS AND WHEN IN ANOTHER POSITION TO MASK THE RIGHT HAND HALF OF SAID OBJECT LENS; MEANS FOR ALTERNATELY ACTUATING PRESENT LEFT AND SAID SECOND X-RAY SOURCES TO ALTERNATELY PRESENT LEFT AND RIGHT HAND X-RAY IMAGES TO SAID IMAGE FORMING SCREEN; MEANS FOR OPERATING SAID SHUTTER MEMBER TO ALTERNATELY MASK SAID LEFT AND SAID RIGHT HAND HALF OF SAID OBJECT LENS, SAID SHUTTER OPERATING MEANS AND SAID X-RAY SOURCE ACTUATING MEANS BEING OPERATED IN CONJUNCTION SUCH THAT SUCH SHUTTER MEMBER IS MASKING SAID RIGHT HAND HALF OF SAID OBJECT LENS WHEN SAID FIRST X-RAY SOURCE IS ACTUATED AND SAID SHUTTER MEMBER IS MASKING SAID LEFT HAND HALF OF SAID OBJECT LENS WHEN SAID SECOND X-RAY SOURCE IS BEING ACTUATED.