Structures for polarization and beam control
First Claim
1. An article, comprising:
- a first layer including a plurality of rows of a first material extending along a first direction, the rows being spaced apart from each other and a center of each adjacent row being separated by a distance less than a wavelength λ
; and
a second layer supported by the first layer, the second layer comprising a second material,wherein the first layer is configured to transmit about 50% or more of radiation of the wavelength λ
having a first polarization state incident on the first layer along a path and to specularly reflect about 80% or more of radiation of the wavelength λ
having a second polarization state incident on the first layer along the path, the first and second polarization states being orthogonal, andthe second layer is configured so that the article specularly reflects about 10% or less of the radiation of the wavelength λ
having the second polarization incident on the article along the path, where the path intersects the first and second layers,wherein the second layer comprises a plurality of portions comprising the second material, the portions being spaced apart from each other and a center of each adjacent portion being separated by a distance more than the wavelength λ
.
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Accused Products
Abstract
In certain aspects, the invention features articles that have a first layer including a plurality of rows of a first material extending along a first direction, the rows being spaced apart from each other and a center of each adjacent row being separated by a distance less than a wavelength λ, and a second layer supported by the first layer, the second layer including a second material. The first layer is configured to transmit about 50% or more of radiation of wavelength λ having a first polarization state incident on the first layer along a path and to specularly reflect about 80% or more of radiation of wavelength λ having a second polarization state incident on the first layer along the path, the first and second polarization states being orthogonal. The second layer is configured so that the article specularly reflects about 10% or less of the radiation of wavelength λ having the second polarization incident on the article along the path, where the path intersects the first and second layers.
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Citations
38 Claims
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1. An article, comprising:
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a first layer including a plurality of rows of a first material extending along a first direction, the rows being spaced apart from each other and a center of each adjacent row being separated by a distance less than a wavelength λ
; anda second layer supported by the first layer, the second layer comprising a second material, wherein the first layer is configured to transmit about 50% or more of radiation of the wavelength λ
having a first polarization state incident on the first layer along a path and to specularly reflect about 80% or more of radiation of the wavelength λ
having a second polarization state incident on the first layer along the path, the first and second polarization states being orthogonal, andthe second layer is configured so that the article specularly reflects about 10% or less of the radiation of the wavelength λ
having the second polarization incident on the article along the path, where the path intersects the first and second layers,wherein the second layer comprises a plurality of portions comprising the second material, the portions being spaced apart from each other and a center of each adjacent portion being separated by a distance more than the wavelength λ
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. An article, comprising:
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a first layer supported by a substrate, the first layer including a plurality of rows of a first material extending along a first direction, the rows being spaced apart from each other and a center of each adjacent row being separated by a distance less than a wavelength λ
;wherein the first layer is configured to transmit about 50% or more of radiation of the wavelength λ
having a first polarization state incident on the first layer along a path and to specularly reflect about 80% or more of radiation of the wavelength λ
having a second polarization state incident on the first layer along the path, the first and second polarization states being orthogonal; anda second layer supported by the first layer, the second layer comprising a plurality of rows comprising a second material extending along a second direction, the rows being spaced apart from each other and a center of each adjacent row being separated by a distance more than the wavelength λ
,wherein the wavelength λ
, is in a range from about 150 nm to about 5,000 nm.
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37. An article, comprising:
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a first layer including a plurality of rows of a first material extending along a first direction, the rows being spaced apart from each other and a center of each adjacent row being separated by a distance less than a wavelength λ
; anda second layer supported by the first layer, the second layer comprising a second material, wherein the first layer is configured to transmit about 50% or more of radiation of the wavelength λ
having a first polarization state incident on the first layer along a path and to specularly reflect about 80% or more of radiation of the wavelength λ
having a second polarization state incident on the first layer along the path, the first and second polarization states being orthogonal,the second layer is configured so that the article specularly reflects about 10% or less of the radiation of the wavelength λ
having the second polarization incident on the article along the path, where the path intersects the first and second layers, andthe second layer comprises a plurality of portions comprising the second material, the portions being spaced apart from each other and a center of each adjacent portion being separated by a distance of about 1 μ
m or more.
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38. An article, comprising:
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a first layer including a plurality of rows of a first material extending along a first direction, the rows being spaced apart from each other and a center of each adjacent row being separated by a distance less than a wavelength λ
; anda second layer supported by the first layer, the second layer comprising a second material, wherein the first layer is configured to transmit about 50% or more of radiation of the wavelength λ
having a first polarization state incident on the first layer along a path and to specularly reflect about 80% or more of radiation of the wavelength λ
having a second polarization state incident on the first layer along the path, the first and second polarization states being orthogonal,the second layer is configured so that the article specularly reflects about 10% or less of the radiation of the wavelength λ
having the second polarization incident on the article along the path, where the path intersects the first and second layers,the first material is a metallic material, and the first layer comprises a plurality of rows of a dielectric material extending along the first direction, the rows of the dielectric material alternating with the rows of the first material.
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Specification