HEAD-UP DISPLAY SYSTEM

• US 20170242247A1
• Filed: 09/24/2015
• Published: 08/24/2017
• Est. Priority Date: 10/14/2014
• Status: Active Grant

• Current Assignee: Fuyao Glass Industry Group Company Limited (Fuyao)
• Original Assignee: Fuyao Glass Industry Group Company Limited (Fuyao)
• Inventors: TSO, Fai, YUAN, Junlin, ZENG, Dong, ZHANG, Penghui, LIN, Zhu, LU, Guoshui, PENG, Yinghao, FUKUHARA, Kohta
• Granted Patent: US 10,437,054 B2
• Time in Patent Office: Days
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10229 Metallic layers sandwiched by dielectric layers
• CPC Class Codes: B32B 17/10458 Polarization selective transmission
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 2457/20 Displays, e.g. liquid crystal displays, plasma displays
• CPC Class Codes: B32B 2605/08 Cars
• CPC Class Codes: B60J 1/02 arranged at the vehicle front , e.g. structure of the glazing, mounting of the glazing on windscreen mounted antenna wire H01Q1/1271
• CPC Class Codes: B60K 2360/334 Projection means
• CPC Class Codes: B60K 2360/77 Instrument locations other than the dashboard
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60K 35/425 Anti-reflection arrangements
• CPC Class Codes: B60K 35/60 Instruments characterised by their location or relative disposition in or on vehicles arrangements of lighting devices on dashboards B60Q3/10
• CPC Class Codes: C03C 17/3618 Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic
• CPC Class Codes: C03C 17/3626 one layer at least containing a nitride, oxynitride, boronitride or carbonitride
• CPC Class Codes: C03C 17/3644 the metal being silver
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C03C 2217/281 Nitrides
• CPC Class Codes: C03C 2218/156 by magnetron sputtering
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 2027/012 comprising devices for attenuating parasitic image effects
• CPC Class Codes: G02B 2027/0194 : with combiner of laminated type, for optical or mechanical aspects
• CPC Class Codes: G02B 27/0018 : with means for preventing ghost images anti-reflection coatings G02B1/11
• CPC Class Codes: G02B 27/01 : Head-up displays
• CPC Class Codes: G02B 27/0101 : characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 5/00 : Optical elements other than lenses light guides G02B6/00; optical logic elements G02F3/00

Abstract

The present invention relates to the technical field of head-up display, and particularly relates to a head-up display system for an automobile. The head-up display system comprises a projection light source and laminated glass, and further comprises a transparent nanofilm; said film comprises at least two dielectric layers and at least one metallic layer; the projection light source is used for generating p-polarized light; the p-polarized light is incident on a surface of an internal glass panel distal to an intermediate film, said light having an angle of incidence of 42 to 72 degrees, such that the transparent nanofilm can reflect part of the incident p-polarized light.

Claims

1. A head-up display system, comprising a projection light source and laminated glass, the laminated glass comprising an internal glass panel, an external glass panel and an intermediate film sandwiched between the internal glass panel and the external glass panel, wherein the head-up display system further comprises a transparent nanofilm comprising at least two dielectric layers and at least one metallic layer, each metallic layer being located between two dielectric layers;

a difference between a refractive index of the intermediate film and a refractive index of the internal glass panel and the external glass panel is no more than 0.1; and

the projection light source is used for generating p-polarized light which is incident on a surface of the internal glass panel distal to the intermediate film, the light having an angle of incidence of 42 to 72 degrees, such that the transparent nanofilm can reflect part of the incident p-polarized light.

2. The head-up display system according to claim 1, wherein the metallic layer is a silver layer or a silver-containing alloy layer.

3. The head-up display system according to claim 1, wherein the p-polarized light has an angle of incidence of 55 to 70 degrees.

4. The head-up display system according to claim 1, wherein the difference between the refractive index of the intermediate film and the refractive index of the internal glass panel and the external glass panel is no more than 0.05.

5. The head-up display system according to claim 1, wherein the transparent nanofilm is disposed on a surface of the internal glass panel contacting the intermediate film or on a surface of the external glass panel contacting the intermediate film.

6. The head-up display system according to claim 1, wherein the transparent nanofilm is disposed on a polymer film, a difference between a refractive index of the polymer film and the refractive index of the internal glass panel and the external glass panel being no more than 0.1;

and the polymer film provided with the transparent nanofilm is located between the internal glass panel and the external glass panel or is disposed on the surface of the internal glass panel distal to the intermediate film.

7. The head-up display system according to claim 1, wherein the color of the p-polarized light generated by the projection light source is at least one color selected from a group consisting of red, green and blue.

8. The head-up display system according to claim 7, wherein, when the transparent nanofilm comprises two metallic layers, the color of the p-polarized light generated by the projection light source is at least one color selected from a group consisting of green and blue.

9. The head-up display system according to claim 1, wherein, when the transparent nanofilm in the head-up display system comprises two metallic layers or three metallic layers, an auxiliary film is additionally disposed, and comprises at least one auxiliary polymer film and an auxiliary transparent nanofilm disposed on the auxiliary polymer film and comprising a metallic layer;

the auxiliary film is located at an area where the p-polarized light is incident, a distance between the auxiliary transparent nanofilm in the auxiliary film and the transparent nanofilm comprising two metallic layers or three metallic layers is no more than 350 μ

m.

10. The head-up display system according to claim 9, wherein the distance between the auxiliary transparent nanofilm in the auxiliary film and the transparent nanofilm comprising two metallic layers or three metallic layers is no more than 100 μ

m.