US PATENT SUBCLASS 313 / 527
.~.~ Photocathode responsive to phosphor


Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

523  DF  PHOTOSENSITIVE {12}
525  DF  .~ Having phosphor screen {5}
527.~.~ Photocathode responsive to phosphor


DEFINITION

Classification: 313/527

Photocathode responsive to phosphor:

(under subclass 525) Subject matter wherein the phosphor screen is responsive to electromagnetic radiation hitting the phosphor to convert the radiation to a lower frequency of radiation to which the photoemissive cathode is responsive, the lower frequency electromagnetic radiation upon hitting the photoemissive cathode causes the photoemissive cathode to emit electrons in the response to the lower frequency.