Reflection-type light control element, reflection-type light control member, and multilayer glass

Patent metadata

Field	Value
Publication number	US-9507234-B2
Application number	US-201214346748-A
Country	US
Kind code	B2
Filing date	Sep 21, 2012
Priority date	Sep 30, 2011
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A reflection-type light control element according to the present invention is provided with a light control layer configured to exhibit a reversible change between a transparent state and a reflection state in a reversible reaction with a hydrogen and a catalyst layer configured to accelerate the reversible reaction of the light control layer, wherein the reflection-type light control element is such that the light control layer includes an alloy that contains at least one kind of element selected from a group composed of group 2 elements and at least two kinds of elements selected from a group composed of group 3 elements and rare earth elements, or a hydride of the alloy.

First claim

The invention claimed is:

1. A reflection-type light control element, wherein the reflection-type light control element comprises a light control layer configured to exhibit a reversible change between a transparent state and a reflection state in a reversible reaction with a hydrogen and a catalyst layer configured to accelerate the reversible reaction of the light control layer, and wherein the reflection-type light control element is such that the light control layer includes an alloy that contains at least one kind of element selected from the group consisting of group 2 elements and at least two kinds of elements selected from the group consisting of group 3 elements and rare earth elements or a hydride of the alloy,
wherein the reflection-type light control element is such that the alloy is a magnesium-yttrium-scandium alloy represented by Mg 1-x-y Y x Sc y (0.3<x<0.7, 0<y<0.6, and x+y<1).

2. The reflection-type light control element as claimed in claim 1 , wherein the reflection-type light control element is such that the catalyst layer includes a palladium, a platinum, a palladium alloy, or a platinum alloy.

3. The reflection-type light control element as claimed in claim 1 , wherein the reflection-type light control element further comprises a protection layer that has a hydrogen permeability and a water repellency at an opposite side of the light control layer in the catalyst layer.

4. The reflection-type light control element as claimed in claim 1 , wherein the reflection-type light control element is such that a thickness of the light control layer is equal to or greater than 10 nm and equal to or less than 200 nm.

5. The reflection-type light control element as claimed in claim 1 , wherein the reflection-type light control element is such that a thickness of the catalyst layer is equal to or greater than 1 nm and equal to or less than 20 nm.

6. A reflection-type light control member that comprises the reflection-type light control element as clamed in claim 1 , wherein the reflection-type light control member further comprises a transparent member at an opposite side of the catalyst layer in the light control layer.

7. The reflection-type light control member as claimed in claim 6 , wherein the reflection-type light control member is such that a material of the transparent member includes a glass or a plastic.

8. A multilayer glass, wherein the multilayer glass comprises a plurality of glass plates, and the reflection-type light control element as claimed in claim 1 on a surface of at least one glass plate that is opposed to another glass plate.

9. The multilayer glass as claimed in claim 8 , wherein the multilayer glass further comprises an atmosphere controller configured to supply a hydrogen and an oxygen or an air to a gap between the at least one glass plate with the reflection-type light control element and the another glass plate or exhaust a hydrogen and an oxygen or an air from the gap.

Assignees

• Yamada Yasusei
• Yoshimura Kazuki
• Tajima Kazuki
• Nat Inst Advanced Ind Science & Tech

Inventors

• Yamada Yasusei
• Yoshimura Kazuki
• Tajima Kazuki

Classifications

• G02F1/153

  Constructional details · CPC title

• E06B9/24

  Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; {Slat blinds}(operating, guiding or securing devices or arrangements for roll-type closures E06B9/56; free-hanging flexible screens A47H23/00) · CPC title

• C03C17/40

  all coatings being metal coatings · CPC title

• E06B2009/2464

  featuring transparency control by applying voltage, e.g. LCD, electrochromic panels · CPC title

• G02F2203/02

  reflective · CPC title