High contrast display panel and a method of making a high contrast display panel
First Claim
1. An optical panel comprising:
- a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, wherein each waveguide is formed of a core in contact with at least one cladding layer, and wherein the at least one cladding layer includes at least one black layer;
wherein the plurality of outlet faces form an optical panel outlet face, and wherein the optical panel outlet face comprises at least ½
black layer by surface area.
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Abstract
An optical display panel which provides improved viewing contrast is disclosed. The optical panel includes a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core in contact with at least one cladding layer, wherein the at least one cladding layer includes at least one black layer, and at least one redirector connected to the inlet face of each of at least two waveguides. The at least one black layer has a first thickness, and the core has a second thickness, and the first thickness is preferably a multiple of the second thickness. In a preferred embodiment, the first thickness is at least two times greater than the second thickness. In a second preferred embodiment, the first thickness is at least four times greater than the second thickness.
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Citations
23 Claims
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1. An optical panel comprising:
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a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, wherein each waveguide is formed of a core in contact with at least one cladding layer, and wherein the at least one cladding layer includes at least one black layer;
wherein the plurality of outlet faces form an optical panel outlet face, and wherein the optical panel outlet face comprises at least ½
black layer by surface area.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
a light source. -
15. The optical panel of claim 14, wherein said light generator further includes
a light modulator; - and
imaging optics.
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16. The optical panel of claim 15, wherein the light from said light source is modulated by said light modulator to define pixels.
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17. The optical panel of claim 1, wherein the waveguides are in the form of ribbons.
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18. An optical panel comprising:
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a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, wherein each waveguide is formed of a core in contact with at least one cladding layer, and wherein the at least one cladding layer includes at least one black layer;
wherein the at least one black layer has a first thickness, and wherein the core has a second thickness, and wherein the first thickness is at least two times greater than the second thickness. - View Dependent Claims (19, 20)
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21. An optical panel comprising:
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a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, wherein each waveguide is formed of a core in contact with at least one cladding layer, and wherein a black layer is provided between adjoining cladding layers;
wherein the plurality of outlet faces form an optical panel outlet face, and wherein the optical panel outlet face comprises at least ½
black layer by surface area.- View Dependent Claims (22, 23)
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Specification