US 10,480,733 B2Granted

Flame simulating light-emitting devices and related methods

AssigneeSignify Holding B.V.

InventorsJohannes Petrus Maria Ansems, Martinus Theodorus Bennebroek, Abraham Vamattathil Scaria, Ramon Antoine Wiro Clout, Dragan Sekulovski, Tim Dekker

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Abstract

Lighting systems, devices, methods and apparatus for simulating a candle flame are disclosed. The systems and methods employ spatially distributed, disjointed sets of light-emitting elements that are independently controlled with randomized control signals to simulate a candle flame by forming spatially and temporally varying lighting effects. Further, the disjointed sets are controlled such that the total light intensity is essentially maintained. In addition, systems and methods employ a transition probability model to adjust intensities of light-emitting elements in a way that accurately mimics a candle flame.

Claims19

Dependent claims

A light-emitting system for simulating a flame comprising:

a plurality of disjointed sets of light-emitting elements,
a controller configured to dynamically generate a plurality of control signals,
wherein the light-emitting elements of a given set of the disjointed sets of light-emitting elements are configured to adjust corresponding intensities of emitted light in accordance with a respective control signal of the plurality of control signals, and
wherein at least one parameter of the respective control signal is an independent variable with respect to the at least one parameter of another control signal with which the light-emitting elements of another set of the disjointed sets adjust respective emitted light intensities,
wherein the light-emitting elements within the given set adjust the corresponding intensities of the emitted light in accordance with a plurality of light-emission signals that are based on the respective control signal such that the at least one parameter of each light-emission signal of the plurality of light-emission signals is a dependent variable with respect to the at least one parameter of each other light-emission signal of the plurality of light-emission signals.

2 more elements

A method for simulating a flame with a light-emitting system comprising:

generating a plurality of control signals respectively to a plurality of disjointed sets of light-emitting elements;
and
adjusting, in each set of the plurality of disjointed sets, intensities of the light-emitting elements of the set in accordance with a respective control signal of the plurality of control signals,
wherein at least one parameter of the respective control signal for any of said sets is an independent variable with respect to the at least one parameter of the respective control signal for any other set of the disjointed sets,
wherein the adjusting further comprises applying, in each corresponding set of the plurality of disjointed sets, a plurality of phases of the respective control signal to the light-emitting elements of the corresponding set such that the phase applied to any light-emitting element of the set is different from the phase applied to any other light-emitting element of the corresponding set.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/515,590Filed 30 Sep 2015 · us provisional application
Priority: 1 Oct 2014
Published: US 2018/0347771 A16 Dec 2018
Granted: 19 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

F21S 10/043
Simulating flames: by selectively switching fixed light sources
F21K 9/61
Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction: using light guides
H05B 45/00
Circuit arrangements for operating light-emitting diodes [led]
H05B 45/10
Circuit arrangements for operating light-emitting diodes [LED]: controlling the intensity of the light

Family

Application62/058,138Us provisional application · filed 1 Oct 2014
US 2018/0347771 A1Pre-grant publication · published 6 Dec 2018
US 10,480,733 B2This patent

From the US filing history. Foreign family members aren’t listed.

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