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LIDAR SYSTEM WITH A POLYGON MIRROR AND A NOISE-REDUCING FEATURE

  • US 20190310351A1
  • Filed: 05/08/2018
  • Published: 10/10/2019
  • Est. Priority Date: 04/05/2018
  • Status: Active Grant
First Claim
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1. A lidar system comprising:

  • a light source configured to produce a beam of light;

    a scanner configured to scan a field of regard of the lidar system, the scanner including;

    a polygon mirror having a block with a first wall, a second wall, and a plurality of reflective surfaces angularly offset from one another along a periphery of the block, the polygon mirror configured to rotate about a scan-mirror rotation axis to scan the beam of light across the field of regard, anda bracket adjacent to the polygon mirror;

    wherein at least one of the polygon mirror or the bracket includes a noise-reducing feature configured to reduce acoustic noise produced when pressure waves generated by the polygon mirror during rotation are incident on one or more components of the scanner;

    the lidar system further comprising;

    a receiver configured to detect light from the beam of light scattered by a remote target.

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