Illumination system using edge-illuminated hollow waveguide and lenticular optical structures
AssigneeHoneywell International Inc.
InventorsHan Zou, Karl W. Beeson
Life of this patent
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Abstract
An illumination system having a hollow waveguide including first and second light directing arrays (LDA), each having a plurality of generally lenticular prisms defined thereon and arranged generally orthogonally with respect to each other. Light rays from a light source enter the waveguide through a light input side and emerge from the waveguide through a light output side at a predetermined flux and angular distribution. The light output flux and angular distribution can each be independently controlled in accordance with the present invention by the LDAs to provide an illumination system that can be configured for various light output distribution and intensity requirements.
Claims51
An illumination system for distributing light rays from a light source, said illumination system comprising:
- a hollow waveguide having a light input side through which light rays from the light source enter said hollow waveguide and a light output side from which light rays emerge from said hollow waveguide;
- a first light directing array having a first light directing feature defined thereon;
- and
- a second light directing array having a second light directing feature defined thereon, said first and said second light directing features being arranged generally orthogonally with respect to each other, said second light directing array comprising said light output side from which light rays emerge from said hollow waveguide;
- said first and said second light directing features controlling the angular distribution of light output of said illumination system by defining a cut-off angle for light output from said illumination system.
An illumination system for distributing light from a light source having a longitudinal axis, said system comprising:
- a generally rectangular hollow waveguide having a light input side through which light rays from the light source enter said hollow waveguide and a light output side from which light rays emerge from said hollow waveguide;
- a first light directing array having a first light directing feature defined thereon;
- and
- a second light directing array having a second light directing feature defined thereon, said first and said second light directing features being arranged generally orthogonally with respect to each other, said second light directing array comprising said light output side from which light rays emerge from said hollow waveguide;
- said first and said second light directing features controlling the angular distribution of light output of said illumination system by defining a cut-off angle for light output from said illumination system.
An illumination system for distributing light rays from a light source, said illumination system comprising:
- a hollow waveguide having a light input side through which light rays from the light source enter said waveguide and a light output side from which light rays emerge from said hollow waveguide;
- and
- a light directing array having a plurality of angled ridges that project outwardly from the hollow waveguide for controlling the angular distribution of light output of said illumination system in a single direction by defining a cut-off angle for light output from said illumination system.
Dependencies are inferred from the claim text.