X-Ray stereoscopic cinematography apparatus

An X-ray stereoscopic cinematography apparatus for selectively producing images of an object in a stereoscopic cinematography mode, a single cinematography mode, and a fluoroscopy mode by means of first and second cinecameras, each of the cinecameras including a rotatable shutter and an associated shutter position detector generating shutter position signals, the shutter of the first cinecamera being out of phase with the shutter of the second cinecameras, the apparatus comprising:

• an X-ray tube having at least a pair of focal spots from which X-rays are independently irradiated through the object to create an X-ray image thereof;
• means for converting said X-ray image into a corresponding optical image and for transmitting said optical image along a predetermined optical path;
• an optical system device for selectively distributing said optical image, said optical system device including a first half-mirror being positionable in a first position in the optical path of said optical image to transmit a portion of the intensity of said optical image to said first cinecamera and to reflect a portion of said optical image to said second cinecamera and in a second position removed from the light path of said optical image, a second half-mirror being positionable into a first position to reflect said optical image to said first cinecamera, a second position to reflect a portion of the intensity of said optical image to said second cinecamera, or a third position removed from the light path of said optical image, and an entire reflection mirror positionable in a first position in said optical path of said optical image to reflect said image and a second position removed from said optical path of said optical image;
• a television camera for receiving the light intensity of said optical image and for converting said receiving optical image to corresponding electric signals;
• a mode setter for selecting one of said stereoscopic cinematography mode, single cinematography mode, and said fluoroscopy mode;
• a radiographic control device for controlling the positioning of said second half-mirror into and out of said first, second, and third positions and the positioning of said first half-mirror and said entire reflection mirror into said first or second position in accordance with said selected mode, for controlling the intensity of said optical images reflected to said second cinecamera and said television camera responsive to said positioning of said first and second half-mirrors and said entire reflecting mirror, for controlling photographing of said optical image by said first and second cinecameras, and for issuing X-ray exposure control switching signals synchronized to the positions of said shutters of said first and second cinecameras in accordance with said shutter position signals;
• a controller responsive to said mode selected by said mode setter for controlling said radiographic control device to position (1) said first half-mirror in said first position, said second half-mirror into said third position, and said entire reflection mirror into said second position responsive to the selection of said stereoscopic cinematography mode, (2) said first half-mirror in said second position, said second half-mirror into said second position and said entire reflection mirror into said first position responsive to the selection of said single cinematography mode, and (3) said first half-mirror in said second position, said second half-mirror in said third position, and said entire reflection mirror into said first position in response to the selection of said fluoroscopy mode;
• and
• means for selectively performing on-off control of the X-rays irradiated from each of said focal spots of said X-ray tube responsive to said X-ray exposure control switching signals.