Light-spreading device
AssigneeEpistar Corporation
InventorsMin-Hsun Hsieh, Chien-Yuan Wang
Life of this patent
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Abstract
A light-spreading device is disclosed, wherein the light-spreading structure is formed with a wing-shaped protrusion part extending in a first direction and protruding in a different, second direction, such that light enters a surface on one side of the light-spreading structure, opposite to a recess located on another side of the light-spreading structure. The light-spreading structure also has an uneven surface associated with at least one of the wing-shaped protrusion part, the light-entering surface, and the recess.
Claims18
A light-spreading device, comprising:
- a wing-shaped protrusion part extended in a first direction and protruding in a second direction different from the first direction;
- a light-entering surface being on one side of the light-spreading device;
- a recess being on another side of the light-spreading device;
- and
- an uneven surface associated with at least one of the wing-shaped protrusion part, the light-entering surface, and the recess, and propagating in the first direction,
- wherein the uneven surface comprises a plurality of micro-lenses.
A light-spreading device, comprising:
- a first protrusion part extended in a first direction and protruding in a second direction different from the first direction;
- a light-entering surface for receiving light and being away from the protrusion part;
- a recess adjacent to the protrusion part;
- and
- an uneven surface for blurring the light when the light enters the light-spreading device, and propagating in the first direction,
- wherein the uneven surface is arranged between light-pervious materials having different refractive indexes.
A light-spreading device, comprising:
- a first protrusion part extended in a first direction and protruding in a second direction different from the first direction;
- a light-entering surface for receiving light and being away from the protrusion part;
- a recess adjacent to the protrusion part;
- a first uneven surface arranged at a location before the light exits the light-spreading device, and
- propagating in a first propagation direction;
- and
- a second uneven surface propagating in a second propagation direction different from the first propagation direction.
Dependencies are inferred from the claim text.