Lidar device
AssigneeSOS LAB Co., Ltd.
InventorsJun Hwan JANG, Hee Sun YOON
Life of this patent
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Abstract
A lidar device comprises: a laser emitting unit for including a plurality of VCSEL elements emitting a laser beam; a metasurface for including a plurality of beam steering cells arranged in a form of two-dimensional array by a row direction and a column direction, wherein the plurality of beam steering cells guide the laser beam by using nanopillars; wherein the nanopillars included in the plurality of beam steering cells form a subwavelength pattern, wherein the increase of an attribute related to at least one of the width, height, and number per unit length of the nanopillars is repetitive along the direction from the center of the metasurface to the position of the row corresponding to the plurality of beam steering cells.
Claims15
A lidar device comprising:
- a polygonal mirror rotating along a rotational axis, reflecting a laser beam provided from a side toward an object and receiving a laser beam reflected from the object;
- a laser emitting module including a plurality of Vertical Cavity Surface Emitting Laser (VCSEL) elements emitting a laser beam toward the polygonal mirror and arranged along the rotational axis;
- a metasurface forming, via a plurality of nanopillars disposed on an emission surface side of the laser emitting module, a beam of line pattern line pattern being extended along the rotational axis using the laser beam emitted from the laser emitting module;
- and
- a sensor unit receiving, via the polygonal mirror, the laser beam reflected from the object.
A lidar device comprising:
- a laser emitting module for including a plurality of VCSEL (Vertical Cavity Surface Emitting Laser) elements emitting a laser beam;
- a metasurface forming a beam of line pattern extended along a first axis which is one of a vertical axis and a horizontal axis, wherein the metasurface includes a plurality of steering cells steering the laser beam along the first axis by using a nanopillar disposed on an emission surface side of the laser emitting module;
- a scanning mirror transforming the beam of line pattern to a beam of plane pattern and receiving a laser beam reflected from an object, by being rotated along the first axis;
- and
- a sensor unit for receiving the laser beam reflected from the object via the scanning mirror.
Dependencies are inferred from the claim text.