Glass assembly and window assembly

Patent metadata

Field	Value
Publication number	US-12528339-B2
Application number	US-202318852981-A
Country	US
Kind code	B2
Filing date	Apr 4, 2023
Priority date	Apr 6, 2022
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

A glass assembly includes a first glass body having a first surface and a second surface which are oppositely arranged; a second glass body having a third surface facing the second surface and a fourth surface arranged oppositely; a light extraction component sandwiched between the first glass body and the second glass body and including a light extraction structure for extracting light, and an interlayer directly attached to the light extraction component, and the refractive index of the interlayer is smaller than that of an adjacent layer in the direction toward the second glass body, so that incident light introduced from the second glass body is totally reflected toward the second glass body and at least totally reflected in the second glass body.

First claim

The invention claimed is:

1 . A glass assembly comprising:
a first glass body having a first surface and a second surface which are oppositely arranged; a second glass body having a third surface facing the second surface and a fourth surface arranged oppositely to the third surface; a light extraction component sandwiched between the first glass body and the second glass body and comprising a light extraction structure for extracting light, and an interlayer directly attached to the light extraction component, and a refractive index of the interlayer is smaller than that of an adjacent layer in a direction toward the second glass body, so that incident light introduced from the second glass body propagates in the adjacent layer, is totally reflected toward the second glass body and is at least totally reflected in the second glass body.

2 . A glass assembly comprising:
a first glass body having a first surface and a second surface which are oppositely arranged; a second glass body having a third surface facing the second surface and a fourth surface arranged oppositely to the third surface; a light extraction component sandwiched between the first glass body and the second glass body and comprising a light extraction structure for extracting light, and an interlayer directly attached to the light extraction component, and a refractive index of the interlayer is smaller than that of an adjacent layer in a direction toward the second glass body, so that incident light introduced from the second glass body is totally reflected toward the second glass body and at least totally reflected in the second glass body, wherein the light extraction component is a light extraction film sandwiched between the first glass body and the second glass body through a first intermediate layer, the first intermediate layer is attached at least between the light extraction component and the second glass body, and the incident light is totally reflected at least in the second glass body and the first intermediate layer.

3 . A glass assembly comprising:
a first glass body having a first surface and a second surface which are oppositely arranged; a second glass body having a third surface facing the second surface and a fourth surface arranged oppositely to the third surface; a light extraction component sandwiched between the first glass body and the second glass body and comprising a light extraction structure for extracting light; wherein a refractive index of the light extraction component is smaller than that of an adjacent layer in a direction toward the second glass body, so that incident light introduced from the second glass body propagates in the adjacent layer, is totally reflected toward the second glass body and is at least totally reflected in the second glass body.

4 . A glass assembly comprising:
a first glass body having a first surface and a second surface which are oppositely arranged; a second glass body having a third surface facing the second surface and a fourth surface arranged oppositely to the third surface; a light extraction component sandwiched between the first glass body and the second glass body and comprising a light extraction structure for extracting light; wherein a refractive index of the light extraction component is smaller than that of an adjacent layer in a direction toward the second glass body, so that incident light introduced from the second glass body is totally reflected toward the second glass body and at least totally reflected in the second glass body, and wherein the light extraction component is a light extraction film sandwiched between the first glass body and the second glass body through a first intermediate layer, the first intermediate layer is at least attached between the light extraction component and the second glass body, and the light extraction structure is arranged toward the second glass body; and wherein the refractive index of the light extraction component is smaller than that of the first intermediate layer, and the incident light is totally reflected in the first intermediate layer and the second glass body.

5 . The glass assembly according to claim 2 , wherein a second intermediate layer is attached between the light extraction component and the first glass body, and the second intermediate layer is formed as the interlayer; and wherein a refractive index of the second intermediate layer is at least smaller than that of the light extraction component, and the incident light is totally reflected in the light extraction component, the first intermediate layer and the second glass body.

6 . The glass assembly according to claim 5 , wherein the second intermediate layer is selected from polyvinyl butyral, ethylene-vinyl acetate copolymer or acrylic resin.

7 . The glass assembly according to claim 2 , wherein the light extraction structure is arranged toward the first glass body or the second glass body.

8 . The glass assembly according to claim 2 , wherein the light extraction component is attached with a coating and the coating is formed as the interlayer; and wherein a refractive index of the coating is smaller than the refractive index of the light extraction component and/or a refractive index of the first intermediate layer.

9 . The glass assembly according to claim 8 , wherein the coating fills the light extraction structure and the light extraction structure is arranged toward the first glass body; and wherein the incident light is totally reflected in the light extraction component, the first intermediate layer and the second glass body.

10 . The glass assembly according to claim 9 , wherein the coating is polysiloxane.

11 . The glass assembly according to claim 8 , wherein the coating is applied following a contour of the light extraction structure, and the light extraction structure is arranged toward the first glass body; and wherein the incident light is totally reflected in the light extraction component, the first intermediate layer and the second glass body, or wherein the coating is applied following a contour of the light extraction structure, and the light extraction structure is arranged toward the second glass body; and wherein the incident light is totally reflected in the first intermediate layer and the second glass body.

12 . The glass assembly according to claim 11 , wherein the coating is silicon dioxide.

13 . The glass assembly according to claim 1 , further comprising a light source arranged adjacent to the edge of the first glass body and/or the second glass body or arranged at the bottom of the second glass body or embedded in the second glass body.

14 . The glass assembly according to claim 13 , wherein the glass assembly comprises a light guiding component configured to conduct the incident light at least toward the second glass body and the light extraction structure of the light extraction component.

15 . A window assembly comprising a glass assembly according to claim 1 , wherein the window assembly comprises door, window, curtain wall, vehicle window glass, airplane glass or ship glass.

16 . The window assembly according to claim 15 , wherein the window assembly is a vehicle window glass comprising front windshield, rear windshield, skylight glass, vehicle door glass or corner window glass, and wherein the first surface of the first glass body faces the outside of the vehicle and the fourth surface of the second glass body faces the inside of the vehicle.

17 . A window assembly comprising a glass assembly according to claim 3 , wherein the window assembly c

Assignees

• Saint Gobain
• Saint Gobain Sekurit France

Inventors

• Ma Siteng

Classifications

• G02B6/005

  provided by one optical element, or plurality thereof, placed on the light output side of the light guide · CPC title

• G02B6/0013

  Means for improving the coupling-in of light from the light source into the light guide (coupling light into light guides in general G02B6/42) · CPC title

• B60Q1/268

  on windscreens or windows (B60Q1/302 takes precedence; lighting devices for vehicle interior on or for windows B60Q3/208) · CPC title

• B32B2605/08

  Cars · CPC title

• B32B2383/00

  Polysiloxanes · CPC title