Led assembly, led fixture, control method and software program
AssigneeEldolab Holding B.V.
InventorPetrus Johannes Maria Welten
Life of this patent
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Abstract
A plurality of LEDs arranged in groups, each group comprising at least one LED, a control circuit for driving the LEDs, the control circuit comprising a sensing device for sensing an operative parameter of the LEDs. The control circuit is arranged to: a) operate at least one group of the LEDs: b) sense by the sensing device a value of the operative parameter of the at least one group; c) repeat a) and b) for at least a different one of the groups; d) assign to each of the groups of LEDs a value of the operative parameter from the sensed operative parameter values; and e) control the driving of the groups of LEDs from the assigned operative parameter values.
Claims19
A LED assembly comprising:
- a plurality of LEDs arranged in groups, each group comprising at least one LED,
- a control circuit for driving the LEDs, the control circuit comprising a sensing device for sensing an operative parameter of the LEDs,
- the control circuit being arranged to:
- a) operate at least one group of the LEDs;
- b) sense by the sensing device a value of the operative parameter of the at least one group;
- c) repeat a) and b) for at least a different one of the groups;
- d) assign to each of the groups of LEDs a value of the operative parameter from the sensed operative parameter values;
- and
- e) control the driving of the groups of LEDs from the assigned operative parameter values.
A LED fixture comprising:
- a plurality of LEDs, in use having a substantially monochrome light output,
- a cover being provided with a coating or coatings of phosphor or phosphorous materials arranged to receive at least part of the monochrome light output and;
- a light sensor arranged to receive part of the substantially monochrome light output of the plurality of LEDs.
A method for controlling an LED assembly comprising a plurality of LEDs arranged in groups, each group comprising at least one LED, the method comprising:
- a) operating at least one group of the LEDs:
- b) sensing by the sensing device a value of the operative parameter of the at least one group;
- c) repeating a) and b) for at least a different one of the groups;
- d) assigning to each of the groups of LEDs a value of the operative parameter from the sensed operative parameter values;
- and
- e) controlling the driving of the groups of LEDs from the assigned operative parameter values.
Dependencies are inferred from the claim text.