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US 12,529,826 B2Granted
Projector including meta-lens
AssigneeSamsung Electronics Co., Ltd.
InventorsJangwoo You, Byunghoon Na, Seunghoon Han
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Abstract
Provided are projectors, each including a light source configured to emit laser light, a substrate spaced apart from the light source by a distance, a pattern mask including a pattern on a first surface of the substrate, the first surface facing the light source, and a meta-lens including a plurality of first nanostructures on a second surface of the substrate, the second surface facing the first surface, the nanostructures having a shape dimension of a sub-wavelength that is less than a wavelength of light emitted from the light source.
Claims18
A projector comprising:
- a light source configured to emit laser light;
- a substrate apart from the light source;
- a pattern mask comprising a pattern on a first surface of the substrate, the first surface facing the light source;
- and
- a first meta-lens including a plurality of first nanostructures on a second surface of the substrate, the second surface facing the first surface, the plurality of first nanostructures having a shape dimension of a sub-wavelength that is less than a wavelength of the light emitted from the light source,
- wherein the light source is an edge emitting device comprising:
- an upper surface which is parallel to the first surface of the substrate;
- and
- a side surface from which the laser light is emitted, and
- wherein the projector further comprises a path change member that reflects light emitted from the side surface of the edge emitting device to the first surface of the substrate.
7 more elements
Dependencies are inferred from the claim text.