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US 2010/0148689 A1Published application
Systems and methods for calibrating light output by light-emitting diodes
AssigneePhilips Solid-State Lighting Solutions, Inc.
InventorsFrederick M. MORGAN, Ihor A. LYS
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Abstract
A system and method for calibrating light output from an LED is provided. The system includes a support on which an LED is positioned, a photosensor to measure the light output from the LED, and means for calibrating and adjusting the light output of the LED. Calibration is accomplished by measuring the light output from the LED, comparing such output against a reference value, and adjusting the measured output against the reference value.
Claims16
An apparatus, comprising:
- at least one first LED to generate first radiation having a first spectrum;
- at least one second LED to generate second radiation having a second spectrum different than the first spectrum;
- a memory for storing at least one first calibration value and at least one second calibration value;
- and
- at least one controller to receive at least first and second lighting commands, the at least one controller configured to:
- apply the at least one first calibration value to the first lighting command to control the at least one first LED so as to output the first radiation at a first calibrated intensity that substantially corresponds in a predetermined manner to the first lighting command, and
- apply the at least one second calibration value to the second lighting command to control the at least one second LED so as to output the second radiation at a second calibrated intensity that substantially corresponds in a predetermined manner to the second lighting command.
4 more elements
A method, comprising acts of:
- A) energizing at least one first LED so as to generate first radiation having a first spectrum;
- B) energizing at least one second LED so as to generate second radiation having a second spectrum different than the first spectrum;
- C) providing at least first and second lighting commands;
- D) retrieving from at least one memory at least one first calibration value and at least one second calibration value;
- E) applying the at least one first calibration value to the first lighting command to control the at least one first LED so as to output the first radiation at a first calibrated intensity that substantially corresponds in a predetermined manner to the first lighting command;
- and
- F) applying the at least one second calibration value to the second lighting command to control the at least one second LED so as to output the second radiation at a second calibrated intensity that substantially corresponds in a predetermined manner to the second lighting command.
4 more elements
Dependencies are inferred from the claim text.