公开(公告)号：US20210373166A1

公开(公告)日：2021-12-02

申请号：US17314613

申请日：2021-05-07

Applicant: FARO Technologies, Inc.

Inventor： Stefan Müller ,  Martin Ossig ,  Elisabeth Brühl ,  Jens Trollmann

IPC: G01S17/894 ,  G01S7/481

Abstract: A three-dimensional (3D) scanner includes a light source, an optical detector, a reference reflector, and a 3D aperture structure having side walls and an aperture, the aperture sized to pass a first portion of the light reflected by the reference reflector, the side walls sized to block a second portion of the light reflected by the reference reflector. The 3D scanner further includes a tilted optical bandpass filter to block ambient background light without creating cavity reflections that might cause errors in measured distance.