Display window and vehicle

Patent metadata

Field	Value
Publication number	US-12596252-B2
Application number	US-202418585718-A
Country	US
Kind code	B2
Filing date	Feb 23, 2024
Priority date	Sep 18, 2021
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

A display window and a vehicle are provided. The display window includes window glass and at least one projection device. The at least one projection device is configured to generate at least one beam of projection light, and correspondingly project the at least one beam of projection light onto at least one projection region of the window glass to correspondingly form at least one projection image. At least 90% of each of the at least one beam of projection light is S-polarized light. The at least one beam of projection light includes first projection light. The at least one projection region includes a first projection region. The first projection region has a first reflectivity of at least 25% for the first projection light projected at the first angle of incidence.

First claim

What is claimed is:

1 . A display window comprising window glass and at least one projection device, wherein the at least one projection device is configured to generate at least one beam of projection light, and correspondingly project the at least one beam of projection light onto at least one projection region of the window glass to correspondingly form at least one projection image, and at least 90% of each of the at least one beam of projection light is S-polarized light; and
the at least one beam of projection light comprises first projection light, the at least one projection region comprises a first projection region, the first projection light is projected onto the first projection region at a first angle of incidence to form a first projection image, and the first projection region has a first reflectivity of at least 25% for the first projection light projected at the first angle of incidence.

2 . The display window of claim 1 , wherein the first angle of incidence ranges from 53° to 67°, and a projection distance of the first projection image ranges from 0.5 m to 3 m.

3 . The display window of claim 1 , wherein the first projection image has a horizontal field of view (FOV) ranging from 6° to 15°, and a vertical FOV ranging from 2° to 10°.

4 . The display window of claim 1 , wherein the at least one beam of projection light comprises second projection light, the at least one projection region comprises a second projection region, and the second projection light is projected onto the second projection region at a second angle of incidence to form a second projection image, the second projection region has a second reflectivity of at least 12% for the second projection light projected at the second angle of incidence, and the first projection region is spaced apart from the second projection region.

5 . The display window of claim 4 , wherein in a horizontal direction, a minimum distance between the first projection region and the second projection region ranges from 100 mm to 400 mm.

6 . The display window of claim 4 , wherein the first angle of incidence is unequal to the second angle of incidence, and the first reflectivity is greater than the second reflectivity.

7 . The display window of claim 4 , wherein the second angle of incidence ranges from 53° to 67°, and a projection distance of the second projection image ranges from 2 m to 100 m.

8 . The display window of claim 4 , wherein the window glass comprises a glass layer and an enhanced reflection coating, the enhanced reflection coating is disposed on the glass layer, and the enhanced reflection coating at least covers the first projection region.

9 . The display window of claim 8 , wherein the glass layer is a single sheet of tempered glass, the single sheet of tempered glass has an outer surface facing an outside of a vehicle and an inner surface facing an inside of the vehicle, and the enhanced reflection coating is disposed on the inner surface.

10 . The display window of claim 8 , wherein the glass layer is laminated glass, the glass layer comprises a first glass sub-layer, a polymer sub-layer, and a second glass sub-layer, and the first glass sub-layer, the polymer sub-layer, and the second glass sub-layer are disposed in sequence to form the laminated glass; the first glass sub-layer has a first surface and a second surface opposite to each other, the second glass sub-layer has a third surface and a fourth surface opposite to each other, and the polymer sub-layer is disposed close to the second surface and the third surface; and the enhanced reflection coating is disposed on the second surface, at least one surface of the polymer sub-layer, the third surface, or the fourth surface.

11 . The display window of claim 8 , wherein the second projection region is not covered by the enhanced reflection coating.

12 . The display window of claim 8 , wherein the second projection region is covered by the enhanced reflection coating, the first angle of incidence is greater than the second angle of incidence, and a reflectivity of the enhanced reflection coating for the first projection light projected at the first angle of incidence is greater than a reflectivity of the enhanced reflection coating for the second projection light projected at the second angle of incidence.

13 . The display window of claim 8 , wherein the second projection region is covered by the enhanced reflection coating, the first angle of incidence is equal to the second angle of incidence, and a proportion of S-polarized light in the first projection light is greater than a proportion of S-polarized light in the second projection light, and a reflectivity of the enhanced reflection coating for the first projection light projected at the first angle of incidence is greater than a reflectivity of the enhanced reflection coating for the second projection light projected at the second angle of incidence.

14 . The display window of claim 8 , wherein the enhanced reflection coating comprises at least one high refractive-index layer and at least one low refractive-index layer, the at least one high refractive-index layer and the at least one low refractive-index layer are stacked alternately, the at least one high refractive-index layer each has a refractive index greater than or equal to 1.8, and the at least one low refractive-index layer each has a refractive index less than or equal to 1.6.

15 . The display window of claim 14 , wherein a total thickness of the at least one low refractive-index layer is greater than a total thickness of the at least one high refractive-index layer.

16 . The display window of claim 14 , wherein a total thickness of the at least one high refractive-index layer ranges from 10 nm to 50 nm; and any one of the at least one low refractive-index layer has a thickness less than or equal to 70 nm.

17 . The display window of claim 14 , wherein a total thickness of the at least one high refractive-index layer ranges from 10 nm to 20 nm, and any one of the at least one high refractive-index layer has a thickness less than or equal to 15 nm; and any one of the at least one low refractive-index layer has a thickness less than or equal to 50 nm.

18 . The display window of claim 14 , wherein the window glass comprises a transparent region and a functional region, the transparent region has a visible light transmittance ranging from 10% to 95%, the functional region has a visible light transmittance less than 10%, and a closest distance between a lower boundary of the first projection region and the functional region ranges from −30 mm to 200 mm.

19 . A vehicle comprising a vehicle body and a display window, wherein the display window comprises window glass and at least one projection device, wherein the at least one projection device is configured to generate at least one beam of projection light, and correspondingly project the at least one beam of projection light onto at least one projection region of the window glass to correspondingly form at least one projection image, and at least 90% of each of the at least one beam of projection light is S-polarized light;
the at least one beam of projection light comprises first projection light, the at least one projection region comprises a first projection region, the first projection light is projected onto the first projection region at a first angle of incidence to form a first projection image, and the first projection region has a first reflectivity of at least 25% for the first projection light projected at the first angle

Assignees

• Fuyao Glass Ind Group Co Ltd

Inventors

• Chen Zhixin
• Ren Peng
• Lu Yuemin
• He Changlong
• Guan Jinliang
• Jiang Bingming

Classifications

• G02B27/28

  for polarising (used in stereoscopes G02B30/25) · CPC title

• G02B27/18

  for optical projection, e.g. combination of mirror and condenser and objective {(photographic, cine and overhead projectors G03B21/00; photographic projection printing G03B27/32; photolithographic projectors G03F7/20; projection television H04N5/74; colour projection television H04N9/31)} · CPC title

• G02B1/10

  Optical coatings produced by application to, or surface treatment of, optical elements (G02B1/08 takes precedence) · CPC title

• B60J1/02

  arranged at the vehicle front {, e.g. structure of the glazing, mounting of the glazing (on windscreen mounted antenna wire H01Q1/1271)} · CPC title

• B32B17/06

  comprising glass as the main or only constituent of a layer, next to another layer of a specific {material} · CPC title