Light emissive signage devices based on lightwave coupling
DC CAFCFirst Claim
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1. A signage device comprising:
- a waveguide adapted to propagate light of a first wavelength shorter than about 450 nm; and
at least one photoluminescent feature coupled with the waveguide for receiving the light of the first wavelength, the at least one photoluminescent feature adapted to emit light of a second wavelength between about 420 nm and about 650 nm in response to receiving the light of the first wavelength, wherein the at least one photoluminescent feature further comprises a primary color luminescent ink having an optical transparency of about 50% or greater.
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Abstract
A signage device comprising one or more light sources, a waveguide or arrangement of waveguides and photoluminescent features coupled thereto. In one embodiment, a waveguide is adapted to receive light of a first wavelength and the photoluminescent features are adapted to emit light of a second wavelength in response to receiving light of the first wavelength.
222 Citations
49 Claims
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1. A signage device comprising:
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a waveguide adapted to propagate light of a first wavelength shorter than about 450 nm; and at least one photoluminescent feature coupled with the waveguide for receiving the light of the first wavelength, the at least one photoluminescent feature adapted to emit light of a second wavelength between about 420 nm and about 650 nm in response to receiving the light of the first wavelength, wherein the at least one photoluminescent feature further comprises a primary color luminescent ink having an optical transparency of about 50% or greater. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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17. A signage device comprising:
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a waveguide adapted to propagate light of a first wavelength shorter than about 450 nm; and at least one photoluminescent feature coupled with the waveguide for receiving the light of the first wavelength, the at least one photoluminescent feature adapted to emit light of a second wavelength between about 420 nm and about 650 nm in response to receiving the light of the first wavelength, wherein the at least one photoluminescent feature comprises an ultraviolet curable clear ink. - View Dependent Claims (18)
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42. A signage device comprising:
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a plurality of waveguides each adapted to propagate light of a first wavelength shorter than about 450 nm, the waveguides arranged with an overlapping relationship; and at least one photoluminescent feature coupled with each of the waveguides for receiving the light of the first wavelength, the at least one photoluminescent feature adapted to emit light of a second wavelength between about 420 nm and about 650 nm in response to receiving the light of the first wavelength, and the light of the second wavelength emitted from the at least one photoluminescent feature of at least one of the waveguides being transmitted to a viewer through at least another of the waveguides. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49)
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Specification