Variable intensity electroluminescent radiation amplifier

Claim 1

A RADIATION AMPLYFYING DEVICE COMPRISING AN ELECTROLUMINESCENT ELEMENT MADE OF MATERIAL WHICH WILL LUMINESCE WHEN SUBJECTED TO A VARYING ELECTRIC FIELD, SAID ELEMENT BEING A DIELECTRIC AND NONCONDUCTIVE, FIRST MEANS IN CIRCUIT WITH SAID ELEMENT FOR PROVIDING AN ALTERNATING ELECTRIC FIELD THEREFOR, SECOND PHOTOCONDUCTIVE MEANS IN DIRECT CONTACT WITH SAID ELEMENT AND INTERPOSED BETWEEN SAID FIRST MEANS AND SAID ELEMENT OPERATIVE TO CONTROL THE MAGNITUDE OF THE ELECTRIC FIELD APPLIED TO SAID ELEMENT IN RESPONSE TO THE INTENSITY OF A RAY OF LIGHT IMPINGED ON SAID SECOND MEANS, SAID PHOTOCONDUCTIVE MEANS BEING COMPOSED OF A MATERIAL HAVING A VARIABLE ELECTRICAL IMPEDANCE DEPENDING UPON SAID LIGHT INTENSITY AND SAID ELECTROLUMINESCENT ELEMENT HAVNG AN INTENSITY OF LUMINESCENCE VARYING IN ACCORDANCE WITH SAID LIGHT INTENSITY AND FIELD MAGNITUDE, SAID MATERIAL OF SAID PHOTOCONDUCTIVE MEANS BEING IN DIRECT CONTACT WITH SAID ELECTROLUMINESCENT ELEMENT, AND COLOR FILTERING MEANS OPTICALLY ASSOCIATED WITH SAID ELEMENT AND SAID SECOND MEANS OPERATIVE TO TRANSMIT ONLY CERTAIN COLORS OF LIGHT TO SAID SECOND MEANS AND FURTHER OPERATIVE TO REPRODUCE COLORS IN A PATTERN CORRESPONDING TO THE PATTERN OF SAID CERTAIN COLORS FOR LIGHT EMITTED BY SAID ELEMENT.