Luminaire with programmable light distribution

Patent metadata

Field	Value
Publication number	US-10412802-B2
Application number	US-201715447199-A
Country	US
Kind code	B2
Filing date	Mar 2, 2017
Priority date	Mar 2, 2017
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

A method of setting luminance levels of a solid-state light sources of a luminaire with programmable light distribution is provided. The method includes obtaining a file describing a desired light beam distribution, converting the desired light beam distribution into luminance levels for the solid-state light sources, and applying the luminance levels to the solid-state light sources to cause the luminaire to output the desired light beam distribution.

First claim

What is claimed is:

1. A method of setting luminance levels of solid-state light sources of a luminaire with programmable light distribution, the method comprising:
obtaining an output of a lighting design program, wherein the output comprises a file describing a desired light beam distribution;
identifying the luminaire from the output of the lighting design program;
converting the desired light beam distribution into luminance levels for the solid-state light sources; and
applying the luminance levels to the solid-state light sources to cause the luminaire to output the desired light beam distribution.

2. The method of claim 1 , wherein obtaining the file describing the desired light beam distribution comprises obtaining an IES file or a EULUMDAT file describing the desired light beam distribution.

3. The method of claim 2 , wherein the IES file or the EULUMDAT file is obtained from another luminaire with programmable light distribution.

4. The method of claim 2 , wherein the IES file or the EULUMDAT file is obtained from a database of IES files or EULUMDAT files.

5. The method of claim 1 , further comprising:
performing a feasibility check to determine if the desired light beam distribution is feasible to implement on the solid-state light sources of the luminaire.

6. The method of claim 5 , wherein the feasibility check is intensity independent.

7. The method of claim 6 , wherein performing the feasibility check comprises:
normalizing data of the file describing the desired light beam distribution to a maximum intensity of the distribution, and using geometric aspects of the desired light beam distribution to determine if the desired light beam distribution is feasible to implement on the solid-state light sources of the luminaire.

8. The method of claim 7 , wherein converting the desired light beam distribution into the luminance levels for the solid-state light sources comprises modulating an intensity of the solid-state light sources to emulate the geometric aspects of the desired light beam distribution.

9. The method of claim 5 , wherein the feasibility check is intensity dependent.

10. The method of claim 9 , wherein performing the feasibility check comprises:
obtaining a calibration file for the luminaire with all solid-state light sources at full intensity and comparing the calibration file to a maximum intensity of the desired light beam distribution.

11. The method of claim 1 , wherein converting the desired light beam distribution into the luminance levels for the solid-state light sources comprises:
determining whether the desired light beam distribution is rotationally symmetric.

12. The method of claim 11 , wherein in response to determining that the desired light beam distribution is rotationally symmetric, converting the desired light beam distribution into the luminance levels for the solid-state light sources comprises:
calculating luminance levels for one arc of the solid-state light sources and applying the calculated luminance levels to other arcs of the solid-state light sources.

13. The method of claim 11 , wherein in response to determining that the desired light beam distribution is not rotationally symmetric, converting the desired light beam distribution into the luminance levels for the solid-state light sources comprises:
processing spatial variations to achieve the desired light beam distribution.

14. The method of claim 1 , wherein converting the desired light beam distribution into the luminance levels for the solid-state light sources comprises:
obtaining a light beam configuration profile file specifying individual contributions of the solid-state light sources; and
determining intensity constants to be applied to the solid-state light sources from the light beam configuration profile file.

15. The method of claim 1 , wherein the file comprises a surface plot of luminance levels at a target surface.

16. A non-transitory tangible computer readable storage medium having stored thereon a computer program for implementing a method of setting luminance levels of solid-state light sources of a luminaire with programmable light distribution, the computer program comprising instructions which, when executed by a computer, cause the computer to perform a process comprising:
obtaining an output of a lighting design program, wherein the output comprises a file describing a desired light beam distribution;
identifying the luminaire from the output of the lighting design program;
converting the desired light beam distribution into luminance levels for the solid-state light sources; and
applying the luminance levels to the solid-state light sources to cause the luminaire to output the desired light beam distribution.

17. The non-transitory tangible computer readable storage medium of claim 16 , further comprising instructions which, when executed by the computer, cause the computer to perform the process further comprising:
implementing a user interface through which a user of the computer interacts with the computer program, the user interface enabling the user to select the file describing the desired light beam distribution from a set of files describing previously defined light beam distributions.

18. A lighting system, comprising:
one or more luminaires, wherein a first luminaire in the one or more luminaries comprises a plurality of solid-state light sources; and
a computer communicatively coupled to the one or more luminaires, the computer comprising a processor that is configured to:
obtain an output of a lighting design program, wherein the output comprises a file describing a desired light beam distribution;
identify the first luminaire from the output of the lighting design program;
convert the desired light beam distribution into luminance levels for the plurality of solid-state light sources of the first luminaire; and
apply the luminance levels to the plurality of solid-state light sources to cause the first luminaire to output the desired light beam distribution.

19. The lighting system of claim 18 , wherein the processor is further configured to:
receive a user input to change the luminance levels for one or more of the plurality of solid state light sources of the first luminaire; and
apply the changed luminance levels to the one or more solid-state light sources of the first luminaire.

Assignees

• Pereyra Rodrigo
• Quilici Michael
• Ryu Seung Cheol
• Sarkisian Alan
• Osram Sylvania Inc

Inventors

• Pereyra Rodrigo
• Quilici Michael
• Ryu Seung Cheol
• Sarkisian Alan

Classifications

• H05B45/10 Primary

  Controlling the intensity of the light · CPC title

• G05B2219/23069

  Illuminated, lighting up keys, build in led, display, show sequence data entry · CPC title

• G05B19/0426

  Programming the control sequence · CPC title

• H05B37/0272

  Electricity · mapped topic

• H05B33/0845 Primary

  Electricity · mapped topic