Optical devices incorporating photo reactive polymers
First Claim
1. A display device comprising:
- an optical display element; and
a polymer face plate that receives or directs light to the optical display element comprising columnar areas where an index of refraction of the columnar areas is different from the index of refraction of a cladding area surrounding the columnar areas, wherein the columnar areas are formed by exposure of a photoactive resin to a light interference pattern formed by three collimated and coherent light sources, wherein the light interference pattern includes first light regions and second dark regions in the photoactive resin wherein the photoactive resin of the first light region is altered by exposure to light of the light interference pattern and wherein either the first regions or the second regions form the columnar areas.
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Abstract
A method for forming a display device including generating a face plate element by providing a first substrate with a photoactive resin thereon and exposing the photoactive resin to a light interference pattern formed by three collimated and coherent light sources, resulting in columnar features. A display device including an optical display element and a polymer face plate that receives or directs light to the optical display element. The face plate includes columnar areas where an index of refraction of the columnar areas is different from the index of refraction of a cladding area surrounding the columnar areas. The columnar areas are formed by exposure of a photoactive resin to a light interference pattern formed by three collimated and coherent light sources. A method of manufacturing a wave guide including providing a first substrate with a photoactive resin thereon and creating a wave guide channel in a wave guide template. The wave guide channel is filled with a liquid crystal material that is exposed to a light grating to create a variation in an index of refraction of the liquid crystal material in the wave guide channel.
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Citations
24 Claims
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1. A display device comprising:
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an optical display element; and
a polymer face plate that receives or directs light to the optical display element comprising columnar areas where an index of refraction of the columnar areas is different from the index of refraction of a cladding area surrounding the columnar areas, wherein the columnar areas are formed by exposure of a photoactive resin to a light interference pattern formed by three collimated and coherent light sources, wherein the light interference pattern includes first light regions and second dark regions in the photoactive resin wherein the photoactive resin of the first light region is altered by exposure to light of the light interference pattern and wherein either the first regions or the second regions form the columnar areas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for forming a display device comprising:
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generating a face plate element by (i) providing a first substrate with a photoactive resin thereon;
(ii) exposing the photoactive resin to a light interference pattern formed by three collimated and coherent light sources to generate, according to the light interference pattern, first light regions and second dark regions in the photoactive resin wherein the photoactive resin of the first light region is altered by exposure to light of the light interference pattern and wherein either the first regions or the second regions form columnar features; and
combining the face plate with an optical display element to form a display device, wherein the face plate receives or directs light to the optical display element. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
wherein the cladding area has an index of refraction that is less than an index of refraction of the columnar features.
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18. The method of claim 17 wherein the coherent light sources are selected to cause a variation in the index of refraction in the liquid crystal material in the columnar features, wherein the resulting structure reflects some wavelengths of light.
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19. The method of claim 16 wherein the cladding area absorbs light.
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20. The method of claim 12, wherein the columnar features are substantially hexagonally symmetrical in a plane approximately parallel to a plane of the first substrate.
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21. A method of manufacturing a wave guide comprising:
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providing a first substrate with a photoactive resin thereon;
creating a wave guide channel in a wave guide template comprising exposing the photoactive resin to a light pattern having a first light region and a second dark region, wherein after exposure to the light pattern, the photoactive resin of either the first or second region is altered to be solidified to form the wave guide template while the photoactive resin of either the first or second regions is soluble, further comprising the step of dissolving the photoactive resin that is soluble to define the wave guide channel in the wave guide template;
filling the wave guide channel of the wave guide template with a liquid crystal material;
exposing the liquid crystal material to a light grating to create a variation of an index of refraction of the liquid crystal material in the wave guide channel. - View Dependent Claims (22, 23, 24)
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Specification