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US 8,274,644 B2Granted
Sensing temperature of a light emitting diode
AssigneeX-Rite, Incorporated
InventorsJon K. Nisper, Michael J. Mater
Life of this patent
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AssigneeX-Rite, Incorporated
InventorsJon K. Nisper, Michael J. Mater
Estimating the term…
A system (100) for sensing a temperature of a light emitting diode (LED). The system may comprise an LED having a spectral output centered at a first wavelength, a first filter (104) that transitions from attenuation to transmission at about the first wavelength, and a second filter (106) that transitions from transmission to attenuation at about the first wavelength. The system may also comprise a first sensor (108) positioned to sense a first intensity of the LED through the first filter and a second sensor (110) positioned to sense a second intensity of the LED through the second filter. It will be appreciated that a single sensor may be substituted instead of the first and second sensors, provided that the single sensor is capable of selectively viewing the LED through the first and the second filters. The system may also comprise a computer (112) configured to derive a temperature of the LED considering the first intensity and the second intensity.
A system for sensing a temperature of a light emitting diode (LED), the system comprising:
A method of determining a temperature of a light emitting diode (LED), the method comprising:
A method of calibrating a system for determining a temperature of a light emitting diode (LED), the method comprising:
Dependencies are inferred from the claim text.