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US 2022/0066084 A1Published application
Planar remote phosphor illumination apparatus
OwnerYosi SHANI, Tania KOSOBURD +5inventors
InventorsYosi SHANI, Tania KOSOBURD, Pierre Avner BADEHI, Dafna BORTMAN-ARBIV, Gadi SEGAL, Inna MISHUSTIN, Yigal MALYANKER
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Abstract
In various embodiments, an illumination apparatus features spatially separated input and output regions, a light source, a phosphor for light conversion, and an out-coupling structure.
Claims21
-42. (canceled)
An illumination apparatus comprising:
- a waveguide having (i) top and bottom opposed surfaces, (ii) a side surface spanning the top and bottom surfaces, (iii) an input region for receiving light, and (iv) spatially separated from the input region, an output region for emitting light, the output region having an output surface comprising at least a portion of the top surface of the waveguide;
- at least partially embedded within the bottom surface of the waveguide in the input region proximate the side surface, a light source for emitting light into the input region;
- disposed on at least one of the top surface or the side surface of the waveguide in the input region, a layer of phosphor material for converting a portion of light emitted from the light source to a different wavelength;
- and
- an out-coupling structure, disposed in the output region, for causing light to be emitted from the output surface.
2 more elements
An illumination apparatus comprising:
- a waveguide having (i) top and bottom opposed surfaces, (ii) a first side surface spanning the top and bottom surfaces, (iii) a second side surface, opposite the first side surface, spanning the top and bottom surfaces, (iv) a first input region for receiving light, (v) a second input region for receiving light, and (vi) spatially separated from the first and second input regions, an output region for emitting light, the output region having an output surface comprising at least a portion of the top surface of the waveguide;
- at least partially embedded within the bottom surface of the waveguide in the first input region proximate the first side surface, a first light source for emitting light into the first input region;
- at least partially embedded within the bottom surface of the waveguide in the second input region proximate the second side surface, a second light source for emitting light into the second input region;
- disposed on at least one of the top surface or the side surface of the waveguide in the first input region, a first layer of phosphor material for converting a portion of light emitted from the first light source to a different wavelength;
- disposed on at least one of the top surface or the side surface of the waveguide in the second input region, a second layer of phosphor material for converting a portion of light emitted from the second light source to a different wavelength;
- and
- an out-coupling structure, disposed in the output region, for causing light to be emitted from the output surface.
4 more elements
Dependencies are inferred from the claim text.