Method and apparatus for setting a chromaticity coordinate
AssigneeOSRAM GmbH
InventorRalph Bertram
Life of this patent
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Abstract
A method for setting a color locus of a luminaire (110) comprising at least one phosphor-converted light-emitting diode (103, 105) and at least one monochromatic light-emitting diode (104), wherein the method comprises the steps of: setting a current for the at least one phosphor-converted light-emitting diode (103, 105) setting a pulse width modulation for the at least one phosphor-converted light-emitting diode (104); and setting a current or a pulse width modulation for the at least one monochromatic light-emitting diode (104).
Claims14
A method for setting a color locus of a luminaire comprising at least one phosphor-converted light-emitting diode and at least one monochromatic light-emitting diode, wherein the method comprises the steps of:
- setting a current for the at least one phosphor-converted light-emitting diode;
- setting a pulse width modulation for the at least one phosphor-converted light-emitting diode;
- and
- setting a current or a pulse width modulation for the at least one monochromatic light-emitting diode.
An apparatus for setting a color locus of a lamp or luminaire comprising at least one phosphor-converted light-emitting diode and at least one monochromatic light-emitting diode,
- with a control unit, which detects a brightness and/or a temperature of the light-emitting diodes via at least one sensor and drives a driver in such a way that:
- a current can be set for the at least one phosphor-converted light-emitting diode;
- and
- a pulse width modulation can be set for the at least one phosphor-converted light-emitting diode;
- a current or a pulse width modulation can be set for the at least one monochromatic light-emitting diode.
Dependencies are inferred from the claim text.