Device which makes it possible to effect the programmed...

Details Device which makes it possible to effect the programmed... Device which makes it possible to effect the programmed...

G - Physics

09

F

375/49, 314/43.4

G09F 9/00 (2006.01) H01J 37/30 (2006.01) H01J 37/302 (2006.01)

Patent

CA 1085073

Abstract of the Disclosure A device to effect the programmed tracing or figures which have different shapes comprises two electron-optical systems respectively associated with two diaphragms. The first system forms the image of the first diaphragm at a fixed magnifica- tion, on the second diaphragm. The first electrically controlled deflection system makes it possible to displace said image in said plane. A second system forms an image of the thus defined diaphragm, in the object plane. A second deflection system makes it possible to displace said latter image in the object plane.

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