Polarizing device, and method for manufacturing the same
First Claim
1. A polarizing element that absorbs a component of a specific wavelength from electromagnetic waves passing therethrough and thus produces polarized light, comprising:
- a transparent substrate that has a plurality of first recesses formed in a surface of said transparent substrate and extending parallel to one another with a predetermined spacing therebetween in a direction orthogonal to said surface of said transparent substrate, and a plurality of second recesses formed in a dielectric material uniformly provided on said surface of said transparent substrate; and
a thin-film-shaped conductive body embedded in each of said first and second recesses.
1 Assignment
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Accused Products
Abstract
A polarizing element 20 has a first undulating structure in which a plurality of linear first recesses 22 are formed parallel to one another in one surface of a transparent substrate 21, and a dielectric layer 30 made from silicon dioxide is formed on the surface of the first undulating structure to produce a second undulating structure. The second undulating structure has formed therein second recesses 32 having a width W and a depth H, with second projections 33 having a width d intervening between adjacent second recesses 32. A thin-film-shaped conductive body 13 of width W and depth H is embedded in each of the second recesses 32.
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Citations
12 Claims
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1. A polarizing element that absorbs a component of a specific wavelength from electromagnetic waves passing therethrough and thus produces polarized light, comprising:
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a transparent substrate that has a plurality of first recesses formed in a surface of said transparent substrate and extending parallel to one another with a predetermined spacing therebetween in a direction orthogonal to said surface of said transparent substrate, and a plurality of second recesses formed in a dielectric material uniformly provided on said surface of said transparent substrate; and a thin-film-shaped conductive body embedded in each of said first and second recesses. - View Dependent Claims (2, 3)
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4. A polarizing element that absorbs a component of a specific wavelength from electromagnetic waves passing therethrough and thus produces polarized light, comprising:
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a transparent substrate, a plurality of thin-film-shaped conductive bodies arranged on a surface of said transparent substrate and extending parallel to one another with a predetermined spacing therebetween and in a direction orthogonal to said surface of said transparent substrate, and a dielectric material disposed on said surface of said transparent substrate, said dielectric having formed therein a plurality of grooves extending parallel to one another with a predetermined spacing therebetween and in a direction orthogonal to said surface of said transparent substrate, said thin-film-shaped conductive bodies embedded in said grooves, and wherein the following relationships are satisfied;
0.1λ
≦
d<
0.5λ
,
0.5d<
H≦
20d,
0.06d≦
W≦
1.5d, and
1.0μ
m≦
|ε
|·
W·
(H/d),where d represents said predetermined spacing between said conductive bodies, H a height of said conductive bodies, W a width of said conductive bodies, |ε
| an absolute value of a complex relative permittivity of said conductive bodies, and λ
a polarized light wavelength, and units of d, W, and H are μ
m.- View Dependent Claims (5, 6, 7)
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8. A polarizing element that absorbs a component of a specific wavelength from electromagnetic waves passing therethrough and thus produces polarized light, comprising:
-
a transparent substrate that has a plurality of first recesses formed in a surface of said transparent substrate and extending parallel to one another with a predetermined spacing therebetween in a direction orthogonal to said surface of said transparent substrate; and a thin-film-shaped conductive body embedded in each of said first recesses, wherein the following relationships are satisfied;
0.1λ
≦
d<
0.5λ
,
0.5d<
H≦
20d,
0.06d≦
W≦
1.5d, and
1.0 μ
m≦
|ε
|·
W·
(H/d),where d represents said predetermined spacing between said conductive bodies, H a height of said conductive bodies, W a width of said conductive bodies, |ε
| an absolute value of a complex relative permittivity of said conductive bodies, and λ
a polarized light wavelength, and units of d, W, and H are μ
m.- View Dependent Claims (9, 10)
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11. A method of manufacturing a polarizing element that absorbs a component of a specific wavelength from electromagnetic waves passing therethrough and thus produces polarized light, comprising:
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a first undulating structure forming step of forming, in a surface of a transparent substrate, a first undulating structure having a plurality of linear first recesses extending parallel to one another with a predetermined spacing therebetween; a second undulating structure forming step of depositing a dielectric to an approximately uniform thickness onto said first undulating structure using a liquid phase deposition method, thus forming a second undulating structure having a plurality of second recesses having a width narrower than a width of said first recesses; and a conductor embedding step of embedding a conductor into said second recesses. - View Dependent Claims (12)
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Specification