G - Physics – 02 – B
Patent
G - Physics
02
B
88/1
G02B 21/22 (2006.01) G01C 11/14 (2006.01) G02B 27/02 (2006.01) G02B 27/22 (2006.01) G03B 35/00 (2006.01)
Patent
CA 1190776
ABSTRACT OF THE DISCLOSURE The present invention relates to a stereo- scopic viewer which comprises optical elements per- mitting simultaneous examination, through two eyepieces, of two successive panoramic images in a film of pano- ramic exposures, the elements defining an optical path between each of the two images and its relevant eye- piece, and control elements for displacing one of the two images received by the observer in relation to the other; the optical elements comprise, for each optical path, on the one hand, a set of mirrors providing an odd number of reflections and, on the other hand, a total- reflection prism, preferably a right prism, the two prisms having, as a base, an isosceles triangle; the faces of the two prisms corresponding to the third side of the base, upon which total reflection is effected, are arranged substantially perpendicularly to the plane of the film to be examined and form between them an angle of about 90°, one of the faces running sub- stantially parallel with the longitudinal axis of the film to be examined.
406596
Carn Annick R.
Gresse Herve R.
Compagnie Du Materiel de Micrographie C.m.m.
Goudreau Gage Dubuc
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