Polarization rotator
US-2015349431-A1 · Dec 3, 2015 · US
Polarizing element
US2018081103A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018081103-A1 |
| Application number | US-201615564503-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 14, 2016 |
| Priority date | Apr 30, 2015 |
| Publication date | Mar 22, 2018 |
| Grant date | — |
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Abstract
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A polarizing element includes: a transparent substrate; and grid-shaped convexities that are arranged on the transparent substrate at a smaller pitch than a wavelength of operating band light and that extend in a specific direction. The grid-shaped convexities include a reflection layer formed on the transparent substrate and grid tips formed with side surfaces that, when viewed in the specific direction, are inclined in a direction of tip tapering.
First claim
Opening claim text (preview).
1 . A polarizing element having a wire grid structure, comprising: a transparent substrate; and grid-shaped convexities that are arranged on the transparent substrate at a smaller pitch than a wavelength of operating band light and that extend in a specific direction, wherein the grid-shaped convexities include a reflection layer formed on the transparent substrate and grid tips formed with side surfaces that, when viewed in the specific direction, are inclined in a direction of tip tapering. 2 . The polarizing element according to claim 1 , satisfying 2/3 a/b 8/7, and θ 0 ≦θ<90°, where θ represents an angle of inclination of the side surfaces of the grid tips relative to the transparent substrate, a represents height of the grid tips when viewed in the specific direction, b represents width of the grid-shaped convexities when viewed in the specific direction, and θ 0 =arctan(2a/b). 3 . The polarizing element according to claim 2 , wherein the angle of inclination θ is defined as an angle of inclination of a tangent to the side surfaces of the grid tips at a central position of the grid tips in a height direction when viewed in the specific direction. 4 . The polarizing element according to claim 2 , wherein the angle of inclination θ satisfies θ≦80°. 5 . The polarizing element according to claim 2 , wherein the polarizing element is designed for light of a specific wavelength in a visible light region and the angle of inclination θ is selected from a range of angles for which absorption axis direction reflectance of light of the specific wavelength is 10% or less. 6 . The polarizing element according to claim 1 , wherein the grid tips include, in order from a side corresponding to the transparent substrate, a reflection layer, a dielectric layer, and an absorption layer.
Assignees
Inventors
Classifications
- G02B5/3058Primary
comprising electrically conductive elements, e.g. wire grids, conductive particles · CPC title
involving the reflection of light at a particular angle of incidence, e.g. Brewster's angle · CPC title
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- What does patent US2018081103A1 cover?
- A polarizing element includes: a transparent substrate; and grid-shaped convexities that are arranged on the transparent substrate at a smaller pitch than a wavelength of operating band light and that extend in a specific direction. The grid-shaped convexities include a reflection layer formed on the transparent substrate and grid tips formed with side surfaces that, when viewed in the specific…
- Who is the assignee on this patent?
- Dexerials Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B5/3058. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Mar 22 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).