VEHICLE DISPLAY SYSTEM

• US 20120105808A1
• Filed: 10/28/2010
• Published: 05/03/2012
• Est. Priority Date: 10/28/2010
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: Diehl, Peter G., Feng, Fei
• Application Number:
  US12/913,901
• Publication Number:
  US 20120105808A1
• Time in Patent Office: Days
• US Class Current: 353/20
• CPC Class Codes: G02B 2027/012 comprising devices for attenuating parasitic image effects
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 5/30 Polarising elements light-modulating devices with active elements G02F1/00

Abstract

A device for a vehicle that includes an at least partially transparent member operatively connected to the vehicle, the at least partially transparent member having a first side and a second side. A projector emits electromagnetic radiation projecting an image on or in the at least partially transparent member. A first polarizer is positioned on the first side of the transparent member such that the electromagnetic radiation goes through the first polarizer. A second polarizer is positioned on the second side of the at least partially transparent member. The first polarizer and the second polarizer are oriented such that the image is visible from the first side of the at least partially transparent member and not visible from the second side of the at least partially transparent member. The second polarizer may have a second polarization axis that is substantially orthogonal to a first polarization axis of the first polarizer.

Claims

1. A device for a vehicle comprising:

an at least partially transparent member operatively connectable to a vehicle, the at least partially transparent member having a first side and a second side;

a projector emitting electromagnetic radiation, the electromagnetic radiation projecting an image on or in the at least partially transparent member;

a first polarizer positioned on the first side of the transparent member such that the electromagnetic radiation goes through the first polarizer;

a second polarizer positioned on the second side of the at least partially transparent member;

wherein the first polarizer and the second polarizer are oriented such that the image is visible from the first side of the at least partially transparent member and not visible from the second side of the at least partially transparent member.

2. The device of claim 1:

wherein the first polarizer has a first polarization axis; and

wherein the second polarizer has a second polarization axis that is substantially orthogonal to the first polarization axis.

3. The device of claim 2, wherein the first side of the at least partially transparent member faces inside of the vehicle and the second side of the at least partially transparent member faces outside of the vehicle.

4. The device of claim 2, wherein the at least partially transparent member is substantially transparent.

5. The device of claim 2, further comprising a third polarizer operatively connected to the second side of the at least partially transparent member, to control the transmission of exterior light into the vehicle.

6. The device of claim 2:

wherein the first polarizer is a linear polarizer; and

wherein the second polarizer is a linear polarizer.

7. The device of claim 2:

wherein the first polarizer is a circular polarizer; and

wherein the second polarizer is a circular polarizer.

8. The device of claim 2, wherein the at least partially transparent member is a front windshield of the vehicle.

9. The device of claim 2, wherein the at least partially transparent member is a sunroof of the vehicle.

10. The device of claim 2, wherein the at least partially transparent member is a rear windshield of the vehicle.

11. The device of claim 2, wherein the at least partially transparent member is a side window of the vehicle.

12. The device of claim 2, wherein the electromagnetic radiation is ultraviolet light.

13. The device of claim 2, wherein the electromagnetic radiation is infrared light.

14. The device of claim 2, wherein the electromagnetic radiation is visible light.

15. The device of claim 2, wherein the projector is located at a center armrest.

16. The device of claim 2, wherein the projector is positioned at a front passenger headrest.

17. The device of claim 2, further comprising:

a plurality of light emitting particles integrated in the at least partially transparent member;

wherein the plurality of light emitting particles emit visible light in response to absorbing the electromagnetic radiation from the projector, the emitted visible light forming the image on or in the at least partially transparent member.

18. The device of claim 17, wherein each of the plurality of light emitting particles has a diameter less than about 500 nanometers.

19. A device for a vehicle comprising:

a projector emitting electromagnetic radiation;

wherein the electromagnetic radiation includes a first and second wavelength range, the first wavelength range being different from the second wavelength range;

a first polarizer positioned such that the electromagnetic radiation goes through the first polarizer, the first polarizer having a first polarization axis;

an at least partially transparent member operatively connectable to a vehicle, the at least partially transparent member including;

a first layer having at least one first light emitting particle emitting a first visible color upon absorbing electromagnetic radiation in the first wavelength range;

a second layer having at least one second light emitting particle emitting a second visible color upon absorbing electromagnetic radiation in the second wavelength range, the second visible color being different from the first visible color;

an image formed on or in the at least partially transparent member by the first visible color and the second visible color;

a second polarizer operatively connected to the at least partially transparent member, the second polarizer having a second polarization axis that is substantially orthogonal to the first polarization axis; and

wherein the image is visible from a first side of the at least partially transparent member and not visible from a second side of the at least partially transparent member.

20. The device of claim 19:

wherein the electromagnetic radiation includes a third wavelength range, the third wavelength range being different from the first and the second wavelength ranges;

wherein the at least partially transparent member includes a third layer having at least one third light emitting particle emitting a third color light upon absorbing electromagnetic radiation in the third wavelength range;

wherein the image formed includes the third color light.