Improvements in or relating to apparatus for making photographs of an x-ray image ona fluorescent screen

摘要

828,799. X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 24, 1956 [May 27, 1955], No. 16100/56, Class 98(1) Apparatus for photographing X-ray images formed on ia fluorescent screen includes a mirror 4 which reflects the light from the screen 3 towards a photographic camera 5, the edges of mirror 4 and screen 3 being close together, and a photo-electric cell 12 lying within the cone of light passing from the screen to the camera is located in an aperture 11 in the mirror. The cell may be located behind the mirror and the edge of aperture 11 may be bevelled, so that light reflected from the cell is shielded from the camera. The cell may be connected to a time-switch 13 located behind the mirror.