公开(公告)号：US20220342071A1

公开(公告)日：2022-10-27

申请号：US17728585

申请日：2022-04-25

Applicant: SICK AG

Inventor： Frank BLÖHBAUM ,  Christoph MENZEL

IPC: G01S17/34 ,  G01S7/4912 ,  B66C13/46

Abstract: The present invention relates to an FMCW-LiDAR distance measurement apparatus in which a light source, in particular a laser, generates a frequency modulated transmission light beam as a transmission signal having a predetermined frequency deviation and transmits said frequency modulated transmission light beam into a measurement zone; a light receiver receives light reflected by objects in the measurement zone as a reception signal; a mixer mixes at least a portion of the transmission signal with the reception signal and with an oscillator frequency to generate a mixed signal; and the oscillator frequency is adapted to a desired measurement zone to achieve a high measurement accuracy in the desired measurement zone.