Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1989-05-22
1991-02-05
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
313336, H01J 516
Patent
active
049907662
ABSTRACT:
A microscopic voltage controlled field emission electron amplifier device consists of a dense array of field emission cathodes with individual cathode impedances employed to modulate and control the field emission currents of the device. These impedances are selected to be sensitive to an external stimulus such as light, x-rays, infrared radiation or particle bombardment; so that the field emission current varies spacially in proportion to the intensity of the controlling stimulus. When a phosphorus screen or other suitable responsive element is provided, the device functions as a solid state image convertor or intensifier.
REFERENCES:
patent: 3068360 (1962-12-01), Nicoll
patent: 3755704 (1973-08-01), Spindt et al.
patent: 4827177 (1989-05-01), Lee et al.
Journal of Applied Physics, vol. 47, No. 12, Dec. 1976, pp. 5248 to 5263.
Applications of Surface Science, vol. 16, (1983), pp. 268 to 276.
Burgett Charley B.
Simms Robert A.
Le Que Tan
Murasa International
Nelms David C.
Ptak LaValle D.
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