Light emittng module
AssigneeNichia Corporation
InventorsRyohei Yamashita, Toshinobu Katsumata
Life of this patent
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Abstract
A light emitting module according to one embodiment of the present disclosure includes a lightguide plate having an upper surface in which a first hole is defined, and a lower surface opposite to the upper surface; and a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole. The upper surface of the lightguide plate includes a first region defining a plurality of protrusions and/or recesses. A ratio of an area occupied by the plurality of protrusions and/or recesses per unit area in a plan view increases concentrically in an outward direction from the light emitting element.
Claims28
A light emitting module, comprising:
- a lightguide plate having:
- an upper surface in which a first hole is defined, and
- a lower surface opposite to the upper surface;
- and
- a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole,
- wherein the upper surface of the lightguide plate includes a first region defining a plurality of protrusions or recesses, and
- wherein a ratio of an area occupied by the plurality of protrusions or recesses per unit area in a plan view increases concentrically in an outward direction from the light emitting element.
A light emitting module, comprising:
- a lightguide plate having:
- an upper surface in which a first hole is defined, and
- a lower surface opposite to the upper surface;
- and
- a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole,
- wherein the upper surface of the lightguide plate includes a first region defining a plurality of protrusions and recesses, and
- wherein a ratio of an area occupied by the plurality of protrusions and recesses per unit area in a plan view increases concentrically in an outward direction from the light emitting element.
Dependencies are inferred from the claim text.