VARIABLE TRANSMITTANCE OPTICAL FILTER WITH SUBSTANTIALLY CO-PLANAR ELECTRODE SYSTEM
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Accused Products
Abstract
A variable transmittance optical filter comprising: a first layer comprising a first substantially transparent substrate with a substantially co-planar (SC) electrode system disposed thereon, the SC electrode system made of transparent electrically conductive material and comprising at least one pair of electrically separate electrodes arranged in a substantially co-planar manner on the first substantially transparent substrate, each pair of electrically separate electrodes comprising a first electrode and a second electrode, a second layer proximate to the first layer and comprising a transition material that darkens in response to a non-electrical stimulus and lightens in response to application of an electric voltage; and an electrical connection system for electrically connecting the SC electrode system to a source of electric voltage.
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Citations
87 Claims
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1-54. -54. (canceled)
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55. A variable transmittance optical filter comprising:
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(a) a first layer comprising a first substantially transparent substate with a substantially co-planar (SC) electrode system disposed thereon, the SC electrode system pattern made of transparent electrically conductive material and comprising at least one pair of electrically separate electrodes arranged in a substantially co-planar manner on the first substantially transparent substrate, each pair of electrically separate electrodes comprising a first electrode and a second electrode; (b) a second layer proximate to the first layer and comprising a transition material comprising a compound that is both photochromic and electrochromic, and that darkens in response to a non-electrical stimulus and lightens in response to application of an electric voltage; and (c) an electrical connection system for electrically connecting the SC electrode system to a source of electric voltage; wherein the first electrode and the second electrode of each pair comprise primary finger-like structures and the primary finger-like structures of the first electrode are interdigitated with the finger-like structures of the second electrode. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A method of preparing a variable transmittance optical filter comprising the steps of:
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(a) providing a first layer comprising a first substantially transparent substrate, and; (i) etching into a layer of substantially transparent electrically conductive material disposed thereon a substantially co-planar (SC) electrode system, the SC electrode system pattern comprising at least one pair of electrically separate electrodes arranged in a substantially co-planar manner, each pair of electrically separate electrodes comprising a first electrode and a second electrode;
or(ii) printing onto the first substrate a substantially co-planar (SC) electrode system pattern using a conductive ink, the SC electrode system comprising at least one pair of electrically separate electrodes arranged in a substantially co-planar manner, each pair of electrically separate electrodes comprising a first electrode and a second electrode; (b) disposing a second layer proximate to the SC electrode system, the second layer comprising a transition material comprising a compound that is both photochromic and electrochromic that is capable of dynamically varying the degree of visible light transmittance on application of an electric voltage; and (c) providing an electrical connection system electrically connecting the SC electrode system to a source of electric voltage; wherein the first electrode and the second electrode of each pair comprise primary finger-like structures and the primary finger-like structures of the first electrode are interdigitated with the primary finger-like structures of the second electrode. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87)
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Specification