Optical-to-electric image conversion system employing a cathode-

Details Optical-to-electric image conversion system employing a cathode- Optical-to-electric image conversion system employing a cathode-

1989-11-22

1990-12-18

Healy, Brian

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

350 9625, 250213VT, 35821313, 35821315, 358225, 358901, G02B 608, H01J 3150, H04N 314

Patent

active

049781952

ABSTRACT:
An apparatus for translating an optical image, as of a waveform, created by an electron beam device such as a cathode-ray tube into an electric signal. A fiber optics faceplate, having a multiplicity of optical fibers laid parallel to one another, is held against the CRT screen for transmitting the optical image to an image sensor such as that comprised of charge-coupled devices. Although preferable to optical lens systems because of far less transmission loss, the fiber optics faceplate has been susceptible to the irregular electrification of its light-exit surface, resulting in the appearance of starlike bright dots upon image reproduction from the output from the image sensor. Such irregular electrification is avoided by providing a transparent layer of electrically conducting material between the fiber optics faceplate and the image sensor.

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patent: 4558255 (1985-12-01), Genovese et al.
patent: 4593199 (1986-06-01), Yaniv et al.

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