Color reversible electrochemical light filter utilizing electrolytic solution
First Claim
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1. IN AN ELECTROCHEMICAL LIGHT FILTER HAVING A TRANSPARENT GROSS ELECTRODE, A MINOR ELECTRODE IN SPACED RELATIONSHIP TO THE GROSS ELECTRODE AND WHICH IS SPACED AND POSITIONED TO ALLOW THE PASSAGE OF LIGHT, A LIGHT TRANSMITTING ELECTROLYTE OCCUPYING THE SPACE BETWEEN SAID ELECTRODES, AN ELECTRICAL POWER SOURCE AND MEANS FOR REVERSIBLE APPLYING SUCH ELECTRICAL POWER TO THE ELECTRODES, THE IMPROVEMENT WHICH COMPRISES PROVIDING AS SAID ELECTROLYTE AN AQUEOUS SOLUTION CONTAINING A COLORING AMOUNT OF COMPLEXED MANGANESE ION STABLE IN AQUEOUS SOLUTION IN THE +2 AND +3 VALENCE STATE WHEREBY THE COLOR OF THE AQUEOUS SOLUTION IS ALTERED BY SEQUENTIALLY APPLYING PULSES OF ELECTRICAL POWER OF OPPOSITE POLARITY.
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1 Claim
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1. IN AN ELECTROCHEMICAL LIGHT FILTER HAVING A TRANSPARENT GROSS ELECTRODE, A MINOR ELECTRODE IN SPACED RELATIONSHIP TO THE GROSS ELECTRODE AND WHICH IS SPACED AND POSITIONED TO ALLOW THE PASSAGE OF LIGHT, A LIGHT TRANSMITTING ELECTROLYTE OCCUPYING THE SPACE BETWEEN SAID ELECTRODES, AN ELECTRICAL POWER SOURCE AND MEANS FOR REVERSIBLE APPLYING SUCH ELECTRICAL POWER TO THE ELECTRODES, THE IMPROVEMENT WHICH COMPRISES PROVIDING AS SAID ELECTROLYTE AN AQUEOUS SOLUTION CONTAINING A COLORING AMOUNT OF COMPLEXED MANGANESE ION STABLE IN AQUEOUS SOLUTION IN THE +2 AND +3 VALENCE STATE WHEREBY THE COLOR OF THE AQUEOUS SOLUTION IS ALTERED BY SEQUENTIALLY APPLYING PULSES OF ELECTRICAL POWER OF OPPOSITE POLARITY.
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Current AssigneeGiffin D. Jones, Ralph E. Friedrich
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Original AssigneeGiffin D. Jones, Ralph E. Friedrich
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InventorsJones, Giffin D., Friedrich, Ralph E.
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Application NumberUS04/249,858Time in Patent Office1,394 DaysField of SearchUS Class Current359/275CPC Class CodesG02B 5/24 Liquid filters G02B5/23 tak...G02F 1/153 Constructional details
