OPTICAL FILTER COMPRISING A VARIABLE TRANSMITTANCE LAYER
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Accused Products
Abstract
A optical filter comprising a variable transmittance layer having a first spectrum in a dark state, and a second spectrum in a faded state; and a color balancing layer having a third spectrum; each of the first, second and third spectra comprising a visible portion; the first and third spectra combining to provide a dark state spectrum approximating a dark state target color; and the second and third spectra combining to provide a fades state spectrum approximating a faded state target colour. The optical filter may further comprise a light attenuating layer. The optical filter may further comprise part of a laminated glass.
3 Citations
43 Claims
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1-24. -24. (canceled)
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25. An optical filter comprising:
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a variable transmittance layer having a first spectrum in a dark state and a second spectrum in a faded state, wherein each of the first and second spectra comprise a visible portion; and an ultraviolet (UV) blocking layer that has a cutoff wavelength of between 370 nm and 435 nm, wherein the variable transmittance layer and the UV blocking layer comprise a stack. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An optical filter comprising:
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a variable transmittance layer having a first spectrum in a dark state and a second spectrum in a faded state, wherein each of the first and second spectra comprise a visible portion; an infrared (IR) blocking layer, wherein the variable transmittance layer and the infrared (IR) blocking layer comprise a stack; and a color balancing layer having a third spectrum and comprising part of the stack, wherein the third spectrum comprises a visible portion, the first and third spectra combine to provide a dark state spectrum approximating a dark state target color, and the second and third spectra combine to provide a faded state spectrum approximating a faded state target color. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43)
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Specification