Light Engine, Driver, and System Including the Light Engine and Driver

Patent metadata

Field	Value
Publication number	US-2025311073-A1
Application number	US-202519234873-A
Country	US
Kind code	A1
Filing date	Jun 11, 2025
Priority date	Apr 22, 2021
Publication date	Oct 2, 2025
Grant date	—

Abstract

A light engine with a driver interface is provided. The light engine is configured to be driven by a driver via the driver interface. The light engine comprises an LED circuit, wherein the LED circuit comprises a number of LED stands each comprising a number of LEDs. The light engine further comprises a control unit comprising a memory unit for storing a maximum allowable current value for the light engine, and a digital interface for receiving and/or sending data, wherein the control unit is configured to output the maximum allowable current value stored in the memory unit via the digital interface for configuring the driver so that the electric current provided by the driver does not exceed the maximum allowable current value of the light engine. A driver and a system are further specified.

First claim

What is claimed is:

1 . A light-emitting diode (LED)-based light engine comprising:
a first interface by which the light engine is configured to receive an electric current output by a driver; and a second interface by which the light engine is configured to send to the driver a maximum allowable current value associated with the light engine, wherein the maximum allowable current value:
corresponds to a peak electric current at which the light engine operates normally; and
serves, at least in part, to configure the driver so that the electric current output by the driver does not exceed the maximum allowable current value of the light engine.

2 . The light engine of claim 1 , further comprising at least one LED.

3 . The light engine of claim 2 , wherein the at least one LED comprises at last one of:
at least one LED strand; and a plurality of LEDs including at least two different types of LEDs.

4 . The light engine of claim 1 , further comprising a memory unit configured to store the maximum allowable current value.

5 . The light engine of claim 4 , wherein the memory unit is further configured to store data pertaining to at least one of:
calibration information relating to the light engine; a current temperature of the light engine; a type of emitter of the light engine; a current color of light emitted by the light engine; a current correlated color temperature (CCT) of light emitted by the light engine; operating duration information relating to the light engine; an input voltage relating to the light engine; and an input current relating to the light engine.

6 . The light engine of claim 1 , further comprising a first control unit configured to communicate with the driver through the first interface.

7 . The light engine of claim 6 , wherein the first control unit is configured to output the maximum allowable current value to the driver via the first interface.

8 . The light engine of claim 7 , wherein the first control unit is configured to output the maximum allowable current value to a second control unit of the driver.

9 . The light engine of claim 6 , wherein the first control unit is configured to control the light engine at least partially based on at least one sensor signal.

10 . The light engine of claim 9 , wherein the at least one sensor signal comprises data pertaining to at least one of:
a current temperature of the light engine; a current color of light emitted by the light engine; a current correlated color temperature (CCT) of light emitted by the light engine; a motion or presence in an environment of the light engine; environmental light in the environment of the light engine; and an air quality in the environment of the light engine.

11 . The light engine of claim 6 , wherein the first control unit is configured to at least one of:
determine the maximum allowable current value based on a current temperature of the light engine; and update the maximum allowable current value.

12 . The light engine of claim 6 , further comprising a power supply unit configured to autonomously supply power to the first control unit.

13 . The light engine of claim 1 , further comprising:
a plurality of LEDs; and a power distribution unit configured to control a distribution of power provided by the driver to the plurality of LEDs.

14 . The light engine of claim 13 , further comprising a first control unit configured to control the power distribution unit such that the distribution of power is at least partially based on at least one of:
calibration data; and sensor data.

15 . The light engine of claim 1 , further comprising at least one of:
an operating sensor configured to detect at least one current operation parameter; and an environmental sensor configured to detect at least one current environmental parameter.

16 . A driver configured to drive the light engine of claim 1 .

17 . A lamp or luminaire comprising the light engine of claim 1 .

18 . A system comprising:
a driver; and a light-emitting diode (LED)-based light engine comprising:
a first interface by which the light engine is configured to receive an electric current output by the driver; and
a second interface by which the light engine is configured to send to the driver a maximum allowable current value associated with the light engine, wherein the maximum allowable current value:
corresponds to a peak electric current at which the light engine operates normally; and
serves, at least in part, to configure the driver so that the electric current output by the driver does not exceed the maximum allowable current value of the light engine.

19 . The system of claim 18 , wherein the driver comprises a memory unit configured to store the maximum allowable current value.

20 . The system of claim 18 , further comprising at least one of:
a controller configured to be in communication with at least one of the driver and the light engine; a communication module configured to be in communication with at least one of the driver and the light engine; and a temperature sensor configured to detect a current temperature of the light engine.

Assignees

• Ledvance Gmbh

Inventors

• Bergenek Krister
• Niggebaum Alexander
• Klier Philipp

Classifications

• H05B45/30 Primary

  Driver circuits · CPC title

• H05B45/28

  using temperature feedback · CPC title

• H05B47/11

  by determining the brightness or colour temperature of ambient light · CPC title

• H05B47/105

  in response to determined parameters · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title