2D scanning high precision lidar using combination of rotating concave mirror and beam steering devices

A light detection and ranging (LiDAR) system, comprising:

• one or more light sources configured to provide a plurality of light beams;
• a beam scanner configured to scan a field-of-view of the LiDAR system using the plurality of light beams, the beam scanner comprising a planar mirror and a rotatable polygon mirror comprising a plurality of reflective surfaces,
• wherein the rotatable polygon mirror, when rotating, is configured to:
• receive the light beams at one or more reflective surfaces of the plurality of reflective surfaces of the rotatable polygon mirror, and
• direct, by the one or more reflective surface of the plurality of facets, the light beams to the planar mirror,
• wherein the planar mirror is pivotable to redirect the light beams to a field-of-view;
• and
• wherein the beam scanner is optically coupled to the one or more light sources and is positioned to:
• scan the light beams both vertically and horizontally to illuminate an object within the field-of-view of the LiDAR system,
• receive return light formed based on the illumination of the object within the field-of-view, and
• direct the return light to a detector.