Apparatus and method for LED emission spectrum control
AssigneeMitsubishi Kasei Corporation
InventorMasahiro Noguchi
Life of this patent
Estimating the term…
Abstract
An emission spectrum controlling apparatus and method for an LED are disclosed. A temperature measurement device is provided for measuring the temperature of a light emitting diode or the temperature in the surrounding environment of the light emitting diode. A driving power control device is also provided for controlling the driving power of the LED, and a computing unit is disclosed which controls the driving power control device based on the temperature information from the temperature measuring device and the driving power information from the driving power control device.
Claims8
An emission spectrum controlling apparatus for at least one light emitting diode comprising:
- a temperature measurement means for measuring at least one of the temperature of a corresponding one of said at least one light emitting diode and the temperature in an environment proximate to a corresponding one of said at least one light emitting diode;
- a driving power control means for controlling the driving power of the at least one light emitting diode;
- a computing means for computing an emission wavelength of the at least one light emitting diode;
- and
- emission wavelength control means for controlling the driving power control means based on the temperature information from the temperature measurement means and driving power information from the driving power controlling means.
An emission spectrum controlling method for controlling the emission spectrum of at least one light emitting diode comprising:
- measuring at least one of the temperature of said at least one light emitting diode and the temperature in an environment proximate to said at least one light emitting diode with a temperature measurement means;
- controlling the driving power of the at least one light emitting diode with a driving power control means;
- computing an emission wavelength of the at least one light emitting diode based on the temperature information from the temperature measurement means and driving power information from the driving power control means;
- and
- controlling the driving power control means based on the computed emission wavelength.
Dependencies are inferred from the claim text.