Lighting system and method of manufacture
AssigneeKoninklijke Phillips Electronics N.V.
InventorsHugo Johan Cornelissen, Giovanni Cennini, Tim Dekker
Life of this patent
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Abstract
A lighting system comprises a circuit board (30) which carries a lighting circuit comprising a plurality of lighting elements (72). The surface of the circuit board (30) carrying the lighting elements is at least partially reflective. A spacer layer (70) is over the circuit board and a top reflector (82) is over the spacer layer. The spacer layer defines a light cavity air gap between the circuit board and the top reflector, and the top reflector and/or the circuit board is provided with an array of light out-coupling structures.
Claims14
A lighting system comprising:
- a circuit board which carries a lighting circuit comprising a plurality of lighting elements, wherein the surface of the circuit board carrying the lighting elements is at least partially reflective;
- a spacer layer over the circuit board;
- a top reflector over the spacer layer, wherein the spacer layer defines an air gap between the circuit board and the top reflector, wherein the top reflector and/or the circuit board is provided with a light out-coupling structure,
- and wherein the circuit board comprises a patterned top conductor which has an array of isolated conductor areas surrounded by a common conductor area, wherein one or more lighting elements are connected between each isolated conductor area and the common conductor area.
A method of manufacturing a lighting system, comprising:
- providing a circuit board which carries a lighting circuit comprising a plurality of lighting elements, wherein the surface of the circuit board carrying the lighting elements is at least partially reflective;
- providing a spacer layer over the circuit board;
- and
- providing a top reflector over the spacer layer, wherein the spacer layer defines an air gap between the circuit board and the top reflector;
- wherein the top reflector and/or the circuit board is provided with a light out-coupling structure,
- and wherein the circuit board comprises a patterned top conductor which has an array of isolated conductor areas surrounded by a common conductor area, wherein one or more of the lighting elements are connected between each isolated conductor area and the common conductor area.
Dependencies are inferred from the claim text.