Photodetector for receiving an index signal of a beam-index cath

Details Photodetector for receiving an index signal of a beam-index cath Photodetector for receiving an index signal of a beam-index cath

1987-10-13

1990-01-16

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2504831, 313471, 378 44, H01J 2910

Patent

active

048945315

ABSTRACT:
A photodetector including a planar light guide of a polygonal shape in which organic phosphor is dispersed in a transparent support material, and a pair of photoelectric conversion elements such that light having a wavelength range for exciting the organic phosphor is introduced into the light guide and light generated from the organic phosphor upon the excitation is guided to the photoelectric conversion elements sensitive to a wavelength of the light generated from the organic phosphor. The light guide is formed, at opposite end portions of its one side, with a pair of light emitting surfaces and the photoelectric conversion elements are, respectively, provided at the light emitting end surfaces such that a light receiving surface of each of the photoelectric conversion elements confronts each of the light emitting end surfaces.

REFERENCES:
patent: 3081414 (1963-03-01), Goodman
patent: 3691424 (1972-09-01), Goodman
patent: 4406974 (1983-09-01), Tanaka et al.
patent: 4654559 (1987-03-01), Hinotani et al.
patent: 4752716 (1988-06-01), Takeuchi
Yamano, A Color Flat Cathode Ray Tube, "IEEE Transactions on Consumer Electronics", vol. CE-31, No. 3, Aug. 1985, pp. 163-173.

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