Optically drivable glass device

Patent metadata

Field	Value
Publication number	US-11086190-B2
Application number	US-201916554728-A
Country	US
Kind code	B2
Filing date	Aug 29, 2019
Priority date	Jan 14, 2019
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

The disclosure provides an optically drivable glass device including: a substrate; a windable stacked layer arranged on the substrate, where one end of the windable stacked layer is installed on the substrate, and the windable stacked layer includes a driving layer formed of an ultraviolet rays-sensitive and deformable material, and a flexible substrate layer with a light absorbing or reflecting function, where an initial state of the driving layer is a flat state; and an ultraviolet light source configured to provide the windable stacked layer with a light source, where the driving layer is configured to change from the flat state to a curled state under an ultraviolet radiation environment; and the driving layer is configured to change from the curled state to the flat state under an ultraviolet radiation-free environment.

First claim

The invention claimed is:

1. An optically drivable glass device, comprising:
a substrate;
a windable stacked layer arranged on the substrate, wherein one end of the windable stacked layer is installed on the substrate, and the windable stacked layer comprises a driving layer formed of an ultraviolet rays-sensitive and deformable material, and a flexible substrate layer with a light absorbing function or a light reflecting function, wherein an initial state of the driving layer is a flat state; and
an ultraviolet light source configured to provide the windable stacked layer with a light source;
wherein the driving layer is configured to change from the flat state to a curled state under an ultraviolet radiation environment; and the driving layer is configured to change from the curled state to the flat state under an ultraviolet radiation-free environment.

2. The optically drivable glass device according to claim 1 , wherein the ultraviolet light source is arranged externally to provide the driving layer with the light source in a scanning mode.

3. The optically drivable glass device according to claim 1 , wherein a material of the driving layer is an azo material.

4. The optically drivable glass device according to claim 1 , wherein the flexible substrate layer is located on a first side of the driving layer facing the substrate.

5. The optically drivable glass device according to claim 4 , wherein a material of the driving layer is an azo material.

6. The optically drivable glass device according to claim 1 , wherein the ultraviolet light source is arranged on a side of the substrate away from the windable stacked layer connected with the substrate, and a plurality of net dots are arranged on a surface of the substrate away from the windable stacked layer.

7. The optically drivable glass device according to claim 6 , wherein a first refractive index n 1 of the flexible substrate layer, a second refractive index n 2 of the driving layer, and a third refractive index n 3 of the substrate satisfy n 2 >n 1 and n 2 >n 3 ; and
an incident angle θ 2 at which the ultraviolet light source is incident on a second side of the substrate facing the ultraviolet light source satisfies:

θ
2

≥

sin

-
1

⁢

n
3

n
2

.

8. The optically drivable glass device according to claim 6 , wherein the optically drivable glass device further comprises an insulation layer located on a side of the windable stacked layer facing the substrate, and a first refractive index n 1 of the flexible substrate layer, a second refractive index n 2 of the driving layer, and a fourth refractive index n 4 of the insulation layer satisfy n 2 >n 1 and n 2 >n 4 ; and
the angle θ 2 at which the ultraviolet light source is incident on the side of the substrate facing the ultraviolet light source satisfies:

θ
2

≥

sin

-
1

⁢

n
4

n
2

.

9. The optically drivable glass device according to claim 1 , wherein the ultraviolet light source is arranged between the substrate and one end of the windable stacked layer.

10. The optically drivable glass device according to claim 9 , wherein the optically drivable glass device further comprises an insulation layer located on a side of the windable stacked layer facing the substrate, and a first refractive index n 1 of the flexible substrate layer, a second refractive index n 2 of the driving layer, and a fourth refractive index n 4 of the insulation layer satisfy n 2 >n 1 and n 2 >n 4 ; and
an incident angle θ 1 at which the ultraviolet light source is incident on a second side of the driving layer facing the ultraviolet light source satisfies:

θ
1

≥

sin

-
1

⁢

n
4

n
2

.

11. The optically drivable glass device according to claim 9 , wherein a material of the driving layer is an azo material.

12. The optically drivable glass device according to claim 9 , wherein the ultraviolet light source is connected with the driving layer via a bonding agent.

13. The optically drivable glass device according to claim 12 , wherein a material of the driving layer is an azo material.

14. The optically drivable glass device according to claim 9 , wherein a first refractive index n 1 of the flexible substrate layer, a second refractive index n 1 of the driving layer, and a third refractive index n 3 of the substrate satisfy n 2 >n 1 and n 2 >n 3 ; and
an incident angle θ 1 at which the ultraviolet light source is incident on a second side of the driving layer facing the ultraviolet light source satisfies:

θ
1

≥

sin

-
1

⁢

n
3

n
2

.

15. The optically drivable glass device according to claim 14 , wherein a material of the driving layer is an azo material.

Assignees

• Beijing Boe Technology Dev Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Li Wenbo

Classifications

• G02B26/023 Primary

  comprising movable attenuating elements, e.g. neutral density filters · CPC title

• G02B26/02

  for controlling the intensity of light {(G02B26/004 takes precedence)} · CPC title

• G02F1/133305

  Flexible substrates, e.g. plastics, organic film · CPC title

• G02F1/29 Primary

  for the control of the position or the direction of light beams, i.e. deflection · CPC title

• G02F2202/09

  inorganic glass · CPC title