Achromatic Dye-Based Highly-Transmissive Polarization Element, And Polarization Plate
US-2016041321-A1 · Feb 11, 2016 · US
Achromatic polarizing plate with high-transmissivity and high-degree of polarization
US10126468B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10126468-B2 |
| Application number | US-201515316203-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 2, 2015 |
| Priority date | Jun 3, 2014 |
| Publication date | Nov 13, 2018 |
| Grant date | Nov 13, 2018 |
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Abstract
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This achromatic polarizing plate has a high transmissivity, while expressing an achromatic white color when the absorption axes of the polarizing elements are positioned in parallel, and expressing an achromatic black color when the absorption axes of the polarizing elements are positioned orthogonally to one another. This polarizing element contains at least two specific azo compounds, and the absolute value of the difference between the average transmissivity of 420 nm to 480 nm light and the average transmissivity of 520 nm to 590 nm light is equal to or less than 2.5, and the absolute value of the difference between the average transmissivity of 520 nm to 590 nm light and the average transmissivity of 590 nm to 640 nm light is equal to or less than 2.0.
First claim
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The invention claimed is: 1. A polarizing element, comprising an azo compound represented by formula (1) or a salt thereof and an azo compound represented by formula (2) or a salt thereof, wherein the absolute value of the difference between the average transmittance at 420 nm to 480 nm and the average transmittance at 520 nm to 590 nm is equal to or less than 2.5%, and the absolute value of the difference between the average transmittance at 520 nm to 590 nm and the average transm…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US10126468B2 cover?
- This achromatic polarizing plate has a high transmissivity, while expressing an achromatic white color when the absorption axes of the polarizing elements are positioned in parallel, and expressing an achromatic black color when the absorption axes of the polarizing elements are positioned orthogonally to one another. This polarizing element contains at least two specific azo compounds, and the…
- Who is the assignee on this patent?
- Nippon Kayaku Kk, Polatechno Co Ltd, Polatechno Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02B1/08. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 13 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).