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Laser scanner

A laser scanner and laser transmitter technology, applied in the field of laser scanners, can solve problems such as decreased sensitivity

Pending Publication Date: 2022-04-15
RIEGL LASER MEASUREMENT SYSTEMS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though the converging lens which determines the receiving aperture in this text is slightly larger than the mirror surface, the same cutting effect and thus the same periodic drop in sensitivity occurs during the rotation of the mirror cone as is the case with the laser scanner of EP2293013A1

Method used

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  • Laser scanner
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Embodiment Construction

[0023] figure 1 A laser scanner 1 is shown schematically, comprising a mirror cone 2 mounted on a shaft 3 and rotated by a motor 4 . A rotary angle encoder or sensor 5 is flange mounted to the motor 4 and measures or encodes the current position of the mirror cone 2 and sends its signal to the electronic unit 6 ( figure 2 ).

[0024] The mirror cone 2 has the shape of a four-sided cone, the cone axis 2' of which is its axis of rotation. The cone sides 7 - 10 inclined with respect to the axis of rotation 2 ′ form the mirror surface of the mirror cone 2 .

[0025] It should be understood that in this specification, the terms "cone shape" or "mirror cone" mean any type of cone, respectively, having an arbitrary polygonal base, including straight cones as well as "oblique" cones (cones whose axes are not perpendicular base), regular and irregular cones, whole or "truncated" cones ("frustums of cones"), and cones that are cut at their tips and / or bases, e.g. figure 1 with 2 T...

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PUM

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Abstract

The invention relates to a laser scanner (1) comprising a housing (23), a laser emitter (11) comprising an emission aperture (S) for emitting a light beam (12), a laser receiver (16) for receiving the light beam (15), and a beam deflection device in the form of a mirror cone (2), the cone axis of which forms the axis of rotation (2 ') thereof, the laser transmitter (11) and the laser receiver (16) are each directed parallel to an axis of rotation (2 ') of the mirror cone (2), and wherein the laser receiver (16) comprises at least one converging lens (20) arranged downstream of the mirror cone (2) in the received beam path, in the region of the convergent lens (20) that overlaps the mirror surfaces (7-10), the convergent lens, as viewed in the direction of the axis of rotation (2 '), is at least as large as twice the maximum of all the mirror surfaces (7-10), as viewed in the direction of the axis of rotation (2') in terms of area comparison.

Description

technical field [0001] The invention relates to a laser scanner, comprising a casing, a laser transmitter, a laser receiver and a beam deflection device, the laser transmitter includes an emission aperture for emitting an emission beam, and the laser receiver includes an emission aperture for receiving an emission from the environment The reception aperture of the transmitted beam reflected as the received beam, the beam deflection means being located in the beam paths of the transmitted and received beams in the form of a mirror cone mounted on a rotatable axis, wherein the mirror The cone axis of the cone forms the axis of rotation, and the respective cone sides of the mirror cone inclined to the axis of rotation each form a mirror surface, and wherein the laser emitter and the laser receiver The mirrors are each directed toward the mirror cone substantially parallel to the axis of rotation of the mirror cone. Background technique [0002] Such laser scanners are known, f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/481G02B5/09G02B26/12
CPCG01S7/4812G01S7/4817G01S7/4816G02B5/09G02B26/12G01T1/248H01L31/02027H01L31/107
Inventor 赖纳·赖歇特彼得·里格尔马丁·芬尼鲍尔约翰内斯·里格
Owner RIEGL LASER MEASUREMENT SYSTEMS