Systems and methods for testing and characterizing LED lighting devices
First Claim
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1. A method of measuring and storing LED data comprising:
- driving each of a plurality of LEDs with a first predefined drive condition, the plurality of LEDs having data identifying each LED;
measuring one or more selected parameters of each LED when the LED is driven with the first drive condition; and
storing the one or more measured parameters and the first drive condition corresponding to the data identifying each LED.
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Abstract
Systems and methods for characterizing solid state lighting devices are provided. In certain examples, systems and methods for measuring various parameters of light emitting diodes (LEDs), characterizing each LED based on the measured parameters and selecting one or more of the characterized LEDs such that the emitted light from each of the selected LEDs is mixed with the light from the other selected LEDs to create a desired overall light output are described.
6 Citations
18 Claims
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1. A method of measuring and storing LED data comprising:
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driving each of a plurality of LEDs with a first predefined drive condition, the plurality of LEDs having data identifying each LED; measuring one or more selected parameters of each LED when the LED is driven with the first drive condition; and storing the one or more measured parameters and the first drive condition corresponding to the data identifying each LED. - View Dependent Claims (2, 3, 4, 5, 6, 18)
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7. A method of selecting two of more LEDs from a group of LEDs comprising:
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accessing data including, one or more measured parameters of a plurality of LEDs; calculating a mixed output of two or more of the plurality of LEDs based on one or more of the stored measured parameters; and selecting two or more LEDs from said plurality of LEDs for positioning into a luminaire based on the mixed output, wherein the data includes a drive condition that includes one or more of LED temperature, current, forward voltage, duty cycle and a total number of LEDs used in the luminaire. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method of mixing the emitted light of two or more LEDs for a lighting product comprising:
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driving each of a plurality of LEDs with a predefined drive condition; measuring one or more selected parameters of each of the LEDs when the LED is driven with said drive condition; storing said measured parameters and said drive condition; selecting said two or more LEDs from said plurality of LEDs for positioning within a luminaire based on the stored measured parameters and the stored drive condition. - View Dependent Claims (14, 15, 16, 17)
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Specification