Vehicle side and rear exterior illumination and projection

Patent metadata

Field	Value
Publication number	US-11480854-B2
Application number	US-201916727709-A
Country	US
Kind code	B2
Filing date	Dec 26, 2019
Priority date	Dec 26, 2018
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

Systems, devices, and methods are disclosed in which one or more light sources, a detector, a processor and a controller are configured such that light from the one or more light sources can provide illumination or projections that can reduce accidents while the vehicle is in motion and when parked and may also provide information and illumination to the driver and vehicle occupants when entering or exiting the vehicle. These systems may, for example, provide spot illumination to moving objects or pedestrians on the road surface, with the spot illumination following the moving object. Alternatively or in addition these systems may project images on the ground, for example to communicate information to occupants of the vehicle, to occupants of another vehicle, or to pedestrians.

First claim

What is claimed is:

1. A vehicle lighting system comprising:
one or more light sources;
one or more detectors;
a processor configured to receive and process signals from the one or more detectors to detect motion of objects and people exterior to the vehicle; and
a controller configured to receive signals from the processor and in response to detection by the processor of motion of an object or person on a roadway to control the one or more light sources to provide spot illumination to the object or person comprising a spot of reduced horizontal illuminance having a shape that at least partially horizontally surrounds the object or person and follows the moving object or person along the road surface for increased contrast.

2. The vehicle lighting system of claim 1 , wherein the one or more light sources comprise an LED, a laser, or an LED and a laser.

3. The vehicle lighting system of claim 1 , wherein the one or more light sources comprises an LED array.

4. The vehicle lighting system of claim 3 , wherein the LED array is capable of emitting visible light of at least one of white, amber, and red colors.

5. The vehicle lighting system of claim 3 , wherein the LED array is or comprises a microLED array.

6. The vehicle lighting system of claim 5 , wherein the microLED array comprises LED chips, mounted and electrically connected to CMOS circuitry on a silicon wafer, wherein the LED chips are separated by a dielectric and metal that extends above a semiconductor surface of the LED chip and is filled with a wavelength converter.

7. The vehicle lighting system of claim 5 , wherein the microLED array comprises a plurality of LED chips each less than 500 microns in size, a spacing between LED chips less than 50 microns, the LED chips mounted and electrically connected to CMOS circuitry.

8. The vehicle lighting system of claim 1 , wherein the controller is configured to control the one or more light sources to provide a projection at least partially surrounding and following a person moving on the road surface.

9. The vehicle lighting system of claim 8 , wherein the projection is one of circular, oval, square, and rectangular.

10. The vehicle lighting system of claim 1 , wherein the controller is configured to control the one or more light sources to provide a projection on the road surface comprising an arrow that indicates the direction of travel of the vehicle, the moving object or person, or of another vehicle.

11. The vehicle lighting system of claim 1 , wherein the controller is configured to control the one or more light sources to provide a projection on the road surface, visible to another vehicle driver, comprising a traffic sign, a text message, or a traffic sign and a text message.

12. The vehicle lighting system of claim 11 , wherein the projection comprises one or more color.

13. The vehicle lighting system of claim 12 , wherein the color is one of white, amber, and red.

14. A vehicle lighting system comprising:
one or more light sources comprising a microLED array that comprises a plurality of LED chips each less than 500 microns in size, a spacing between LED chips being less than 50 microns, the LED chips mounted and electrically connected to CMOS circuitry;
one or more detectors;
a processor configured to receive and process signals from the one or more detectors to detect motion of objects and people exterior to the vehicle; and
a controller configured to receive signals from the processor and in response to detection by the processor of motion of an object or person on a roadway to control the one or more light sources to provide a projection on the road surface.

15. The vehicle lighting system of claim 14 , wherein the one or more light sources comprises a laser.

16. The vehicle lighting system of claim 14 , wherein a horizontal illuminance of the projection is at least twice a horizontal illuminance of a surrounding area.

17. The vehicle lighting system of claim 16 , wherein the projection comprises a traffic sign, a text message, or a traffic sign and a text message.

18. The vehicle lighting system of claim 14 , wherein the CMOS circuitry is on a silicon wafer, and the LED chips are separated by a dielectric and metal that extends above a semiconductor surface of the LED chip and is filled with a wavelength converter.

19. The vehicle light system of claim 14 , wherein the projection at least partially surrounds and follows the moving object or person on the road surface.

20. The vehicle lighting system of claim 14 , wherein the projection comprises an arrow that indicates the direction of travel of the vehicle, the moving object or person, or of another vehicle.

Assignees

• Lumileds Llc

Inventors

• Camras Michael
• Bhardwaj Jyoti Kiron

Classifications

• H05B45/20

  Controlling the colour of the light · CPC title

• H05B47/115

  by determining the presence or movement of objects or living beings · CPC title

• B60Q1/2696

  Mounting of devices using LEDs · CPC title

• Y02B20/40

  Control techniques providing energy savings, e.g. smart controller or presence detection · CPC title

• B60Q2300/45

  Special conditions, e.g. pedestrians, road signs or potential dangers · CPC title