Projector and sensing system used therefor
AssigneeHTC Corporation
InventorsShih Hong Sun, Chih Pin Chung
Life of this patent
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Abstract
A projector includes a light source and a diffractive optical element. The light source has a first light emitting area and a second light emitting area. The diffractive optical element is disposed on the light source. The diffractive optical element has a first diffraction structure and a second diffraction structure respectively overlapped with the first light emitting area and the second light emitting area, and the first diffraction structure is different from the second diffraction structure. A sensing system is also provided.
Claims18
A projector, comprising:
- a light source, having a first light emitting area and a second light emitting area;
- a diffractive optical element, disposed on the light source, wherein the diffractive optical element has a first diffraction structure and a second diffraction structure respectively overlapped with the first light emitting area and the second light emitting area, and the first diffraction structure is different from the second diffraction structure;
- and
- a light blocking layer, disposed between the first diffraction structure and the second diffraction structure.
A sensing system for sensing three-dimensional information of a test object, the sensing system comprising:
- a projector, the projector comprising:
- a light source, having a first light emitting area and a second light emitting area for emitting a light beam to irradiate the test object;
- a diffractive optical element, disposed on the light source, wherein the diffractive optical element has a first diffraction structure and a second diffraction structure respectively overlapped with the first light emitting area and the second light emitting area, and the first diffraction structure is different from the second diffraction structure;
- and
- a light blocking layer, disposed between the first diffraction structure and the second diffraction structure;
- and
- a camera, configured to receive the light beam reflected by the test object.
Dependencies are inferred from the claim text.