Lighting device with image projection and display
A lighting device, for a motor vehicle, including a transparent or translucent screen; and a lighting module able to project a light beam onto the screen. The screen includes a first diffusive area and a second non-diffusive area, such that a first part of the light beam, projected onto the first area, is diffused by the screen and that a second part of the beam is transmitted by the screen to an external projection surface.
1. Lighting device, for a motor vehicle, comprising:
a transparent or translucent screen;
a lighting module able to project a light beam onto the screen;
wherein
the screen comprises a first diffusive area and a second non-diffusive area, such that a first part of the light beam, projected onto the first area, is diffused by the screen and that a second part of said beam is transmitted by said screen to an external projection surface.
2. Lighting device according to claim 1 , wherein the lighting module comprises a light source and a controlled imager able to form various images on the basis of a control signal.
3. Lighting device according to claim 2 , wherein the controlled imager comprises a liquid crystal component able to transmit in a controlled manner the light emitted by the light source.
4. Lighting device according to claim 2 , wherein the light source has a lighting surface of less than or equal to 10 mm 2 .
5. Lighting device according to claim 1 , wherein the lighting module is configured to form separate and independent light images on the first and second areas of the screen.
6. Lighting device according to claim 5 , wherein the lighting module is configured so that the light image(s) transmitted by the second area of the screen comprise pictograms.
7. Lighting device according to claim 1 , wherein the first and second areas of the screen are adjacent.
8. Lighting device according to claim 1 , wherein the first area of the screen comprises a diffusive film and/or a surface with a regular relief forming a diffusive dioptric lens.
9. Lighting device according to claim 1 , wherein the second area of the screen is transparent and smooth.
10. Lighting device according to claim 1 , wherein the device comprises a housing with an aperture, which housing houses the lighting module, the screen forming an outer lens covering the aperture of the housing.
11. Lighting device according to claim 1 , wherein the second area of the screen is situated below the first area when the device is in the installed position.
12. Lighting device according to claim 1 , wherein the device is a motor vehicle rear light.
13. Lighting device according to claim 2 , wherein the light source has a lighting surface of less than or equal to 10 mm 2 .
14. Lighting device according to claim 2 , wherein the lighting module is configured to form separate and independent light images on the first and second areas of the screen.
15. Lighting device according to claim 2 , wherein the first and second areas of the screen are adjacent.
16. Lighting device according to claim 2 , wherein the first area of the screen comprises a diffusive film and/or a surface with a regular relief forming a diffusive dioptric lens.
17. Lighting device according to claim 2 , wherein the second area of the screen is transparent and smooth.
18. Lighting device according to claim 2 , wherein the device comprises a housing with an aperture, which housing houses the lighting module, the screen forming an outer lens covering the aperture of the housing.
19. Lighting device according to claim 2 , wherein the second area of the screen is situated below the first area when the device is in the installed position.
20. Lighting device according to claim 2 , wherein the device is a motor vehicle rear light.