ILLUMINATION DEVICE WITH LIGHT DIFFUSION PLATE
First Claim
1. An illumination device comprising:
- a solid-state light source configured for generating light, the solid-state light source defining a central axis;
a light diffusion plate arranged generally adjacent to the solid-state light source, the plate comprising an incident surface and an output surface at opposite sides thereof, the incident surface positioned for receiving the light from the solid-state light source, and the output surface being for emission of the light to the outside of the illumination device, at least one of the incident surface and the output surface having a plurality of parallel first micro-structures each having a length parallel to a first reference axis, the first micro-structures being arranged in two groups at opposite sides of the central axis, the first micro-structures of the two groups being symmetrical relative to each other across the central axis, and the first micro-structures configured for increasing a radiating range of the light entering the plate, the increase of one of the groups of first micro-structures being along one direction of a second reference axis, the increase of the other group of first micro-structures being along an opposite direction of the second reference axis, the second reference axis being substantially perpendicular to the first reference axis.
1 Assignment
0 Petitions
Accused Products
Abstract
An exemplary illumination device includes a solid-state light source and a light diffusion plate. The solid-state light source is configured for generating light, and the solid-state light source defines a central axis. The light diffusion plate is arranged generally adjacent to the solid-state light source. The plate includes an incident surface and an output surface at opposite sides thereof. At least one of the incident surface and the output surface has parallel micro-structures each having a length parallel to a first reference axis. The micro-structures are arranged in two groups at opposite sides of the central axis, and the micro-structures of the two groups are symmetrical relative to each other across the central axis. The first micro-structures are configured for increasing a radiating range of the light entering the plate along respective opposite directions of a second reference axis substantially perpendicular to the first reference axis.
-
Citations
20 Claims
-
1. An illumination device comprising:
-
a solid-state light source configured for generating light, the solid-state light source defining a central axis; a light diffusion plate arranged generally adjacent to the solid-state light source, the plate comprising an incident surface and an output surface at opposite sides thereof, the incident surface positioned for receiving the light from the solid-state light source, and the output surface being for emission of the light to the outside of the illumination device, at least one of the incident surface and the output surface having a plurality of parallel first micro-structures each having a length parallel to a first reference axis, the first micro-structures being arranged in two groups at opposite sides of the central axis, the first micro-structures of the two groups being symmetrical relative to each other across the central axis, and the first micro-structures configured for increasing a radiating range of the light entering the plate, the increase of one of the groups of first micro-structures being along one direction of a second reference axis, the increase of the other group of first micro-structures being along an opposite direction of the second reference axis, the second reference axis being substantially perpendicular to the first reference axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An illumination device comprising:
-
a substrate having a convex surface; a plurality of solid-state light sources secured on the convex surface, the plurality of solid-state light sources defining a central axis; a light diffusion plate arranged generally adjacent to the convex surface of the substrate, the plate comprising a concave incident surface and a convex output surface, the concave incident surface facing the convex surface of the substrate for receiving light from the solid-state light sources, and the convex output surface being for emission of the light to the outside of the illumination device, at least one of the concave incident surface and the convex output surface having a plurality of parallel micro-structures each having a length parallel to a first reference axis, the micro-structures being arranged in two groups at opposite sides of the central axis, the micro-structures of the two groups being symmetrical relative to each other across the central axis, and the micro-structures configured for increasing a radiating range of the light entering the plate, the increase of one of the groups of micro-structures being along one direction of a second reference axis, the increase of the other group of micro-structures being along an opposite direction of the second reference axis, the second reference axis being substantially perpendicular to the first reference axis. - View Dependent Claims (19, 20)
-
Specification