Structured light projector and structured light depth sensor
AssigneesInterface Technology (ChengDu) Co., Ltd., Interface Optoelectronics (Shenzhen) Co., Ltd., General Interface Solution Limited
InventorYI-SAN HSIEH
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Abstract
A structured light projector able to project structured light for the depth-perception of objects in a scene includes a laser light source, a first lens on an optical path of the laser beams to collimate the laser beams, and a reflecting mirror. The reflecting mirror imparts a certain or more than one pattern to the light, a target object in the scene reflecting some of the structured light. A structured light depth sensor using the structured light projector is also provided. A depth sensing accuracy of the structured light depth sensor is improved without being limited to an arrangement of light source dots.
Claims20
A structured light projector, comprising:
- a light source adapted for emitting laser beams;
- a first lens on an optical path of the laser beams, the first lens configured for collimating the laser beams;
- and
- a reflecting mirror on a side of the first lens away from the light source, wherein the reflecting mirror comprises a predetermined pattern for reflecting and converting the laser beams passing through the first lens into structured light having a same pattern as the predetermined pattern.
A structured light projector, comprising:
- a light source adapted for emitting laser beams;
- a first lens on an optical path of the laser beams, the first lens configured for collimating the laser beams;
- and
- a reflecting mirror on a side of the first lens away from the light source, wherein the reflecting mirror is configured for reflecting and converting the laser beams passing through the first lens into structured light having preset patterns at a preset time interval.
A structured light depth sensor for sensing a depth of an object, comprising:
- a structured light projector for projecting patterned structured light to the object, the structured light projector comprising:
- a light source adapted for emitting laser beams;
- a first lens on an optical path of the laser beams, the first lens configured for collimating the laser beams;
- and
- a reflecting mirror on a side of the first lens away from the light source, wherein the reflecting mirror is configured for reflecting and converting the laser beams passing through the first lens into structured light;
- a camera on one side of the structured light projector, the camera configured for capturing structured light reflected by the structured light projector after being projected onto the object;
- a memory, the memory configured for storing information of parameters of the camera and a distance between the projector and the camera;
- and
- a processor electrically connected to the projector, the camera, and the memory, wherein the processor controls the structured light projector to project light to the object, and controls the camera to capture light reflected by the object, and according to the parameters of the camera and the distance between the projector and the camera in the memory, the light projected by the structured light projector, and the reflected light captured by the camera calculate a depth of the object.
Dependencies are inferred from the claim text.