Light engines with dynamically controllable light distribution

Patent metadata

Field	Value
Publication number	US-11807162-B2
Application number	US-202217977494-A
Country	US
Kind code	B2
Filing date	Oct 31, 2022
Priority date	May 4, 2018
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

An apparatus and system are disclosed and include a vehicle interior lighting system comprising that includes a light engine with a plurality of independently addressable light emitting diode (LED) segments, each independently addressable LED segment including at least one LED, a flexible printed circuit board (PCB) having a base and plurality of legs extending from the base, each leg supporting an independently addressable LED segment, and a light guide plate configured to provide illumination from the plurality of independently addressable LED segments inside the vehicle. A processor may be configured to receive information from a o vehicle sensing system, a vehicle communication system, or a detection system, and may generate a signal. A controller may be configured to provide one or more light control signals to modify at least one light characteristic of at least one of the plurality of independently addressable LED segments based on the signal.

First claim

What is being claimed is:

1. A vehicle interior lighting system comprising:
a light engine configured to provide light within an interior of a vehicle, the light engine comprising:
a support structure having an outer surface;
independently addressable light emitting diode (LED) segments disposed on the outer surface of the support structure to illuminate different areas of the interior of the vehicle, each of the independently addressable LED segments comprising at least one LED;
a processor configured to receive information from at least one system within the vehicle and generate a control signal based on the information, the information comprising at least one vehicle characteristic selected from a set of vehicle characteristics including occupancy information within the vehicle, vehicular control information, and environmental information external to the vehicle; and
a controller configured to provide, based on the control signal, at least one light control signal to modify at least one emission characteristic of the at least one LED of at least one of the independently addressable LED segments, the controller configured to provide a spot of reduced horizontal illumination surrounding or on a moving object within the vehicle to follow the moving object.

2. The vehicle interior lighting system of claim 1 , wherein:
the independently addressable LED segments are configured to illuminate different interior areas of the vehicle, and
the controller is configured to control the independently addressable LED segments configured to independently control illumination of the different interior areas of the vehicle.

3. The vehicle interior lighting system of claim 2 , wherein the independently addressable LED segments are disposed symmetrically around the outer surface of the support structure to have constant angular difference between adjacent LED segments.

4. The vehicle interior lighting system of claim 2 , wherein the independently addressable LED segments associated with a particular interior area of the vehicle are controlled based on information associated with the particular interior area to dynamically update illumination of the interior of the vehicle.

5. The vehicle interior lighting system of claim 2 , wherein the controller comprises a light intensity controller configured to control an intensity of light from the independently addressable LED segments within each interior area, a light directional controller configured to control a direction of the light from the independently addressable LED segments within each interior area, and a light color controller configured to control a color of the light from the independently addressable LED segments within each interior area.

6. The vehicle interior lighting system of claim 2 , wherein the controller steers light within an interior of the vehicle to a specific vehicle area via control of the independently addressable LED segments to independently activate or deactivate the independently addressable LED segments.

7. The vehicle interior lighting system of claim 1 , wherein the information is selected from a group of data that includes image data, video data, location-tracked image data, facial recognition data, face detection data, shape recognition data, machine learning data, computer vision data, weather data, environmental data, user profile data, and object location data, and the group of data is based on detection selected from occupancy detection, object detection, passenger detection, weight detection, pressure detection, driver identification via an driver seat image, passenger identification via a passenger seat image, an identifier, a mobile device, a user input, historical data, gaze detection, occupant positioning, and vehicle component.

8. The vehicle interior lighting system of claim 1 , wherein the controller is able to generate different types of signals to control different characteristics of the independently addressable LED segments.

9. The vehicle interior lighting system of claim 8 , wherein a first type of signal is a pulse width modulation (PWM) signal with a first width to control brightness of one of the independently addressable LED segments and a second type of signal is a PWM signal with a second width to control intensity of the one of the independently addressable LED segments.

10. The vehicle interior lighting system of claim 1 , further comprising:
a vehicle sensor system configured to provide the information; and
a housing configured to house the light engine and the vehicle sensor system.

11. The vehicle interior lighting system of claim 10 , wherein the housing is further configured to house a light guide having an opening in which the light engine and the vehicle sensor system are disposed.

12. The vehicle interior lighting system of claim 1 , further comprising:
a housing configured to house the light engine; and
a vehicle sensor system configured to provide the information, the vehicle sensor system external to the housing.

13. The vehicle interior lighting system of claim 1 , wherein the controller is configured to use the reduced horizontal illumination to track the moving object while a vertical plane remains the same such that the same vertical plane of the vehicle remains illuminated as the object moves.

14. The vehicle interior lighting system of claim 1 , further comprising sensors configured to generate sensor signals to produce the information in response to multiple sensors being simultaneously triggered, the sensors selected from a group of sensors that include an infra-red (IR) sensor, passive infra-red sensor (PIR), a camera, a motion detection sensor, a microwave sensor a weight sensor, a pressure sensor, an ultra sound sensor, a proximity sensor, a capacitive sensor, a photoelectric sensor, an inductive sensor, and a magnetic sensor.

15. The vehicle interior lighting system of claim 1 , wherein the independently addressable LED segments are arranged in a circular pattern on a ceiling of the vehicle.

16. The vehicle interior lighting system of claim 1 , wherein the at least one system comprises a gaze sensor located on a dashboard of the vehicle such that the gaze sensor is in line of sight with a driver of the vehicle, the gaze sensor configured to detect a gaze of a user and provide facial recognition data to the processor, the processor configured to generate the control signal based on a user profile determined based on the facial recognition data.

17. A vehicle interior lighting system comprising:
a vehicle sensor system configured to generate information based on at least one of occupancy detection, object detection, passenger detection, weight detection, pressure detection, driver identification via a driver seat image, passenger identification via a passenger seat image, an identifier, a mobile device, a user input, historical data, gaze detection, occupant positioning, a vehicle component, and a vehicle component mode;
independently addressable light emitting diode (LED) segments disposed to illuminate different areas of an interior of a vehicle, each of the independently addressable LED segments comprising at least one LED;
a processor configured to receive the information from the vehicle sensor system and generate a control signal based on the information; and
a controller configured to provide, based on the control signal, at least one light control signal to modify at least one emission characteristic of the at least one LED of at least one of the independently addressable LED segments, the controller configured to provide a spot of reduced horizontal ill

Assignees

• Lumileds Llc

Inventors

• Diana Frederic Stephane
• Qiu Yifeng
• Wasilko Michael
• Soleimani Nazila
• Den Breejen Jeroen
• Mcreynolds Alan Andrew
• Guth Gregory Donald

Classifications

• B60Q3/80 Primary

  Circuits; Control arrangements (for dashboards B60Q3/16; for mass transit vehicles B60Q3/47) · CPC title

• B60Q3/56

  Lighting devices mounted on elongate supports, e.g. on flexible arms · CPC title

• B60Q3/66

  for distributing light among several lighting devices · CPC title

• F21V23/005

  the substrate is supporting also the light source · CPC title

• H05K1/189

  characterised by the use of flexible or folded printed circuits · CPC title