Optics: image projectors – Editing or auxiliary viewing
Patent
1975-09-25
1977-06-07
Stephan, Steven L.
Optics: image projectors
Editing or auxiliary viewing
G03B 2100
Patent
active
040279570
ABSTRACT:
An illuminated optical viewer for facilitating corrective operations on an object comprises a work platform which can be moved along two mutually perpendicular coordinates and on which in use of the viewer the film negative or other object to be touched-up or to have any faults corrected will be positively located first optical means projecting an enlarged objective image of a small area of the object, located at one position, on to a screen, second optical means producing an enlarged stereoscopic virtual image of a portion placed at a second position displaced from said one position by a predetermined distance in a predetermined direction, said virtual image being formed in substantial alignment with the portion of the object at said second position, scanning means for adjustably moving the object along two co-ordinates of a plane, and two-position changeover means for so shifting the object as to displace an object portion which is located at said one position to said second position without affecting the adjustment of the scanning means.
REFERENCES:
patent: 3244067 (1966-04-01), Jonker et al.
patent: 3385162 (1968-05-01), Gaudyn
patent: 3409361 (1968-11-01), Hynes et al.
patent: 3512883 (1970-05-01), Noble
patent: 3733121 (1973-05-01), Smitzer
Plessey Handel und Investments A.G.
Stephan Steven L.
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