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Described are multilayer optical composites including a first layer having an index of refraction n1, an ith layer having an index of refraction ni greater than n1, and one or two or more intermediate layers between the first layer and the ith layer, wherein the indices of refraction of the intermed

Described are multilayer optical composites including a first layer having an index of refraction n1, an ith layer having an index of refraction ni greater than n1, and one or two or more intermediate layers between the first layer and the ith layer, wherein the indices of refraction of the intermediate layers are between n1 and ni, and the index of refraction of each intermediate layer increases in the order of position of each layer from the first layer.

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1. A multilayer optical composite comprising four or more layers includinga first non-adhesive optical layer having an index of refraction n1, an ith non-adhesive optical layer having an index of refraction ni greater than n1, and a multilayer optical adhesive between the first layer and the ith lay

1. A multilayer optical composite comprising four or more layers includinga first non-adhesive optical layer having an index of refraction n1, an ith non-adhesive optical layer having an index of refraction ni greater than n1, and a multilayer optical adhesive between the first layer and the ith layer, wherein the indices of refraction of the layers of the multilayer optical adhesive increase between n1 and ni in the order of position from the first layer. 2. The A multilayer composite comprising four or more layers includinga first non-adhesive optical layer having an index of refraction n1, an ith non-adhesive optical layer having an index of refraction ni greater than n1, and a multilayer optical adhesive comprises comprising at least three or more adhesive layers between the first layer and the ith layer, wherein the indices of refraction of the layers of the multilayer optical adhesive increase between n1 and ni in the order of position from the first layer. 3. The composite of claim 2 consisting essentially ofthe first layer with index of refraction n1, the ith layer with index of refraction ni, and a multilayer optical adhesive consisting essentially of from 3 to 20 polymeric layers having indices of refraction monotonically changing between n1 and ni based on the position of the polymeric layer from the first layer. 4. The composite of claim 1 wherein the multilayer optical adhesive consists essentially ofa first adhesive layer adjacent to the first non-adhesive optical layer an xth adhesive layer adjacent to the ith non-adhesive optical layer, and x-2 polymeric layers between the first adhesive layer and the xth adhesive layer. 5. The composite of claim 4 wherein x is from 3 to 18.6. The composite of claim 2 wherein the multilayer optical adhesive comprises 10 or more layers each having an index of refraction between n1 and ni, and the difference between the refractive indices of any two adjacent layers is no greater than 0.02.7. The composite of claim 2 wherein the multilayer optical adhesive consists of 10 or more layers having monotonically varying indices of refraction between n1 and ni, and the difference between the refractive indices of any two adjacent layers is no greater than 0.02.8. The composite of claim 2 whereinthe multilayer optical adhesive comprises 5 or more layers, the difference between n1 and ni is at least 0.2, and the reflectivity of the composite is less than 0.0004. 9. The composite of claim 2 whereinthe multilayer optical adhesive comprises 5 or more layers, the difference between n1 and ni is at least 0.4, and the reflectivity of the composite is less than 0.0004. 10. The composite of claim 9 whereinthe multi layer optical adhesive comprises 10 or more layers, the difference between n1 and ni is at least 0.4, and the reflectivity of the composite is less than 0.0002. 11. A multilayer composite comprising four or more layers includinga first non-adhesive optical layer having an index of refraction n1, an ith non-adhesive optical layer having an index of refraction ni greater than n1, and a multilayer optical adhesive between the first layer and the ith layer, wherein the indices of refraction of the layers of the multilayer optical adhesive increase between n1 and ni in the order of position from the first layer, wherein the first layer and the ith layer are non-adhesive optical component layers comprising material selected from an organic polymeric material and a glass material, and n1 is below about 1.6 and ni is greater than about 1.6. 12. The composite of claim 11 wherein n1 is below about 1.5 and ni is greater than about 2.0.13. The composite of claim 11 wherein the difference in indices of refraction of the first layer and the ith layer is at least 0.4, and the multilayer optical adhesive composite has 5 or more layers.14. The composite of claim 11 wherein the difference in indices of refraction of the first layer and the ith layer is at least 0.5, and the multilayer optical adhesive composite has 10 or more layers.15. The composite of claim 2 whereinthe multilayer optical adhesive composite consists essentially of 4 or more adhesive layers, each layer of the multilayer optical adhesive comprises a blend of two common ingredients in different amounts that alter indices of refraction of the layers. 16. The composite of claim 15 wherein the common ingredients are a polymeric material and nanoparticles that alter the index of refraction of the polymeric material.17. The composite of claim 15 wherein the common ingredients are two different polymeric materials.18. The composite of claim 11 whereinthe multilayer optical adhesive composite consists essentially of 4 or more adhesive layers, each adhesive layer comprises copolymer comprising two common monomeric units in different amounts that alter indices of refraction of the layers. 19. A touch screen display comprising a conductive layer and a multilayer composite comprising four or more layers includinga first non-adhesive optical layer having an index of refraction n1, an ith non-adhesive optical layer having an index of refraction ni greater than n1, and a multilayer optical adhesive between the first layer and the ith layer, wherein the indices of refraction of the layers of the multilayer optical adhesive increase between n1 and ni in the order of position from the first layer. 20. A multilayer optical article comprisinga first optical component having an index of refraction n1, a second optical component having an index of refraction ni greater than n1, and a multilayer optical adhesive between the first optical component and the second optical component to reduce interfacial reflection between the first optical component and the second optical component, wherein the multilayer optical adhesive consists essentially of 5 to 15 adhesive layers having indices of refraction that vary increase monotonically between n1 and ni. 21. A multilayer optical adhesive comprising three or more layers comprisinga first adhesive layer having an index of refraction na1, a second adhesive layer having an index of refraction nai, and a polymeric intermediate layer having an index of refraction between na1 and nai. 22. The multilayer optical adhesive of claim 21 consisting essentially of from 3 to 20 adhesive layers arranged monotonically based on index of refraction.23. A multilayer optical adhesive comprising 3 or more adhesive layers having indices of refraction that vary monotonically between the outermost adhesive layers.24. The multilayer optical adhesive of claim 23 consisting essentially of from 5 to 20 adhesive layers having monotonically varying indices of refraction.25. The multilayer optical adhesive of claim 23 consisting essentially of from 9 to 15 adhesive layers.26. The multilayer optical adhesive of claim 23 consisting of from 5 to 20 adhesive layers having monotonically varying indices of refraction.27. The multilayer optical adhesive of claim 23 consisting of from 9 to 15 adhesive layers having monotonically varying indices of refraction.28. A method of reducing reflectivity between two optical layers, the method comprisingproviding two optical layers, layer 1 having an index of refraction n1 and layer i having an index of refraction ni, greater than n1 and which exhibit a reflectivity at an interface between the two optical layers, providing two or more intermediate adhesive layers between layer n1 and ni, to form a multilayer optical composite, wherein the indices of refraction of intermediate adhesive layers are between n1 and ni, they increase monotonically from layer 1 to layer i, and the reflectivity of the multilayer optical composite is less than the reflectivity at the interface between the two optical layers without the intermediate adhesive layers. 29. The method of claim 28 comprising providing a multilayer optical adhesive between layer n1 and ni, the multilayer optical adhesive comprising from 2 to 20 adhesive layers.30. The method of claim 28 further comprising laminating layers of pressure sensitive adhesive together to form a multilayer optical adhesive which is used as the intermediate adhesive layers.31. A method of producing a multilayer optical adhesive, the method comprising arranging three or more layers of polymeric material into a composite comprisinga first adhesive layer having an index of refraction na1, a second adhesive layer having an index of refraction nai, and a polymeric intermediate layer having an index of refraction between na1 and nai. 32. The method of claim 31 comprising arranging two or more polymeric intermediate layers between the first and second adhesive layers, each polymeric intermediate layer having an index of refraction between na1 and nai.33. The method of claim 32 comprising arranging from 3 to 20 polymeric intermediate layers between the first and second adhesive layers, the polymeric intermediate layers having indices of refraction that vary monotonically between na1 and nai.34. The method of claim 32 comprising arranging from 9 to 15 polymeric intermediate layers between the first and second adhesive layers, the polymeric intermediate layers having indices of refraction that vary monotonically between na1 and nai.