Color reversible electrochemical light filter utilizing electrolytic solution
First Claim
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1. IN AN ELECTROCHEMICAL LIGHT FILLER 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 REVERSIBLY APPLYING SUCH POWER TO THE ELECTRODES, THE IMPROVEMENT WHICH COMPRISES PROVIDING AS SAID ELECTROLYTE A COLORING AMOUNT OF AN AQUEOUS SOLUTION OF AN OXYACID ANION SELECTED FROM THE GROUP CONSISTING OF VANADATE, TUNGSTATE AND MOLYBDATE HAVING A PH OF LESS THAN ABOUT 6.1 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 FILLER 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 REVERSIBLY APPLYING SUCH POWER TO THE ELECTRODES, THE IMPROVEMENT WHICH COMPRISES PROVIDING AS SAID ELECTROLYTE A COLORING AMOUNT OF AN AQUEOUS SOLUTION OF AN OXYACID ANION SELECTED FROM THE GROUP CONSISTING OF VANADATE, TUNGSTATE AND MOLYBDATE HAVING A PH OF LESS THAN ABOUT 6.1 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 NumberUS04/249,860Time in Patent Office1,401 DaysField of SearchUS Class Current359/275CPC Class CodesG02F 1/1524 Transition metal compoundsG02F 1/1525 characterised by a particul...
