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Patent

Automatic electron microscope field counter

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TLDR
In this paper, an image orthicon is reproduced on an oilfilm light-valve, and a transform filter is transparent only to transform of particular shape to be identified, and is located at back focal plane of transform lens.
Abstract
Electron microscope stage is equipped with remotely controlled stepping devices; cycling signals cause presentation of successive fields, whose image is fed by fiber optics to a television image tube, such as an image orthicon, or an intensified vidicon. Image seen by orthicon is reproduced on oilfilm light-valve. Coherent collimated light is fed through oilfilm to a transform lens, located its own focal length from oil film; transform filter is transparent only to transform of particular shape to be identified, and is located at back focal plane of transform lens. Imaging lens is located with its front focal plane at filter; viewing screen at back focal plane of imaging lens shows field corresponding to microscope field, with light spots showing where objects matching filter in shape and size appear in field. Automatic spot counting plus automatic indexing of stage provide automatic field count.

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References
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Apparatus for simultaneously displaying a plurality of images of an object being analyzed in an electron beam device

TL;DR: In this article, the state of surface or the like of an object placed in a field scanned with an electron beam was detected as any of several kinds of electromagnetic or corpuscular information and introduced as a brightnessmodulated signal to a display means such as a cathode-ray tube whose faceplate was scanned in synchronization with the abovementioned scanning of the sample.
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Optical apparatus and methods for viewing or displaying images

TL;DR: In this paper, the authors present an approach for viewing or displaying a scene in a black-and-white movie as three superimposition color separations in a large number of different scenes.
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