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WO2018171277A1 - Laser à lignes croisées - Google Patents

Laser à lignes croisées Download PDF

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Publication number
WO2018171277A1
WO2018171277A1 PCT/CN2017/118386 CN2017118386W WO2018171277A1 WO 2018171277 A1 WO2018171277 A1 WO 2018171277A1 CN 2017118386 W CN2017118386 W CN 2017118386W WO 2018171277 A1 WO2018171277 A1 WO 2018171277A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
module
line projector
laser beam
laser line
Prior art date
Application number
PCT/CN2017/118386
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English (en)
Chinese (zh)
Inventor
张瓯
夏蒙扬
Original Assignee
常州华达科捷光电仪器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 常州华达科捷光电仪器有限公司 filed Critical 常州华达科捷光电仪器有限公司
Publication of WO2018171277A1 publication Critical patent/WO2018171277A1/fr

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  • the invention relates to a laser line projector in the field of construction.
  • the optical structure of the existing laser line projector is to focus and collimate with an aspheric lens after a single point source is emitted, and then selectively split by reflection or transmission or a half mirror, and finally directly cast Draw a line out or through a cylindrical mirror. Therefore, the common laser line projector achieves a slight change in the combination of point and line to form various combinations, such as two lines, four lines, two lines and five points.
  • Such a fixed laser module and its splitting method structurally define the applicability of an instrument.
  • this patent proposes a micromirror system that replaces the structure of the conventional laser module.
  • the shape of the laser line can be changed at any time according to actual needs, and at the same time, some problems compatible with the movement mechanism of the laser line projector are solved, and the problem is greatly improved. The practicality of this product.
  • the micromirror line projector replaces the original collimating beam splitter system with the micromirror optical system on the basis of the conventional laser line projector.
  • the micromirror optical system is not restricted by distance and does not require focusing, and has the characteristics of small volume, light weight and high reliability. Due to the characteristics of its scanning imaging, the image displayed on the target object can be defined by editing the program.
  • the micro mirror can scan a point, a horizontal line, a line segment of a certain length, two mutually perpendicular lines, and the like.
  • the invention discloses a laser line finder comprising: a laser source module emitting a laser beam; a micromirror optical module receiving the laser beam; the micromirror optical module comprising a micro scanning lens, the micro scanning lens being in a mutual Moving in two perpendicular directions, the laser beam is reflected by the micro-scanning lens to a target object, the target object reflects the laser beam back to the scanning galvanometer module to form a reflected laser; the light detecting module Receiving a reflected laser light of the laser beam and converting the reflected laser light into an electrical signal; and a data processing module connected to the light detecting module, receiving the electrical signal and calculating distance data of the target object.
  • the laser line projector is provided with a magnetic ring, and the magnetic ring is connected with the micro-scanning lens, and the magnetic ring slows down the micro-scanning lens by electromagnetic damping when the micro-scanning lens moves shock.
  • the existing laser collimation instrument adopts a movement structure of a hammer type, so as to ensure that the overall posture of the movement including the laser exit module is kept vertical, thereby ensuring that the projected laser line is not affected by the placement surface. Any tilt.
  • a laser line projector equipped with a micromirror system in the past, partly because the micromirror system generates high frequency vibration during operation, and this vibration will affect the hammer structure of the laser line projector. Causes a certain amount of shaking.
  • the solution provided by this patent is to add a magnetic ring inside the casing to overcome the influence of the high frequency vibration of the micromirror by electromagnetic damping.
  • the light detecting module and the data processing module are disposed in an embedded unit.
  • the laser line projector further comprises: a laser modulation module for modulating the laser intensity and the emission time of the laser source module.
  • the laser line projector further comprises: a communication module, which is in interactive communication with a mobile device.
  • the laser line projector further comprises: a human-computer interaction module, wherein the human-machine interaction module comprises a user interface and a display.
  • the laser line projector further comprises: a power module, which is provided by one of a disposable battery pack, a rechargeable battery or an external regulated power supply.
  • a power module which is provided by one of a disposable battery pack, a rechargeable battery or an external regulated power supply.
  • FIG. 1 is a schematic structural view of a system of a laser line projector in accordance with a preferred embodiment of the present invention
  • the laser line projector includes the following equipment:
  • the laser source module is disposed inside the laser line projector and emits a laser beam outward.
  • the micromirror optical module includes a micro-scanning lens that moves in two directions perpendicular to each other such that the laser beam is reflected by the micro-scanning lens to a target object, and the target object is The laser beam is reflected back to the scanning galvanometer module to form a reflected laser.
  • the scanning galvanometer module After the scanning galvanometer module receives the reflected laser light, the reflected laser light is reflected to the light detecting module. After receiving the reflected laser light, the light detecting module converts the reflected laser light into an electrical signal, and further processes the electrical signal.
  • the electrical signal may include the frequency, phase, intensity, etc. of the laser beam emitted by the laser source module, as well as the frequency, phase, intensity, etc. of the reflected laser light.
  • the device is connected to the light detecting module, receives the electrical signal converted by the light detecting module and the information of the laser beam carried in the electrical signal, and processes the information to calculate the distance data between the target object and the laser source. Specifically, after the electrical signal is transmitted by the light detecting module to the data processing module, the data processing module extracts the information of the laser beam from the electrical signal, and calculates the cause of the phase difference according to the corresponding principle, that is, the target object. Distance data.
  • the light detecting module and the data processing module can be placed in an embedded unit, which is convenient for the user to program, and can realize the handheld of the laser line projector.
  • a magnetic ring is provided within the laser line projector.
  • the magnetic ring is coupled to the micro-scanning lens.
  • the magnetic ring is a ring-shaped magnet.
  • the magnetic ring is a commonly used anti-jamming component in electronic circuits, and the magnetic ring mitigates the vibration of the micromirror scanning lens by electromagnetic damping.
  • the laser line projector further includes a laser modulation module that can select different modulation modes for incorrect measurement requirements. For example, when the measured value is calculated based on the time difference of the laser emission reception, the pulse modulation mode can be selected, and when the measured value is calculated based on the phase difference received by the laser emission, the sinusoidal waveform mode can be selected. Therefore, for different modes of demand, the laser modulation module can adjust the laser beam emitted by the laser source module to be converted into a desired form.
  • the laser scanning device of the present invention further includes a communication module or a human-machine interaction module for further convenience of the user's operation.
  • the communication module can communicate with the mobile device, and the mobile device can be installed with application software, and the user can switch to indirectly through the communication module to the drive circuit through operation of the application software.
  • the human-computer interaction module can provide an operation interface to a user who does not have a mobile device, and includes a user interface and a display, and the user can directly input an instruction in the user interface.
  • the laser scanning device can be a combination of a separate device with the mobile device or a separate option from the mobile device.
  • the human-computer interaction module can be placed inside the laser scanning device or in an external fixed position. This embodiment does not limit the locations of the communication module, the mobile device, and the human-machine interaction module.
  • the power supply of the laser scanning device can be provided by the power module.
  • the power module can be a disposable battery pack and manually replaced by a user; or a rechargeable battery, such as a lithium battery, can be connected to an external power supply; or directly connected An external regulated power supply is an alternative.

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  • Lasers (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

La présente invention concerne un laser à lignes croisées qui comprend : un module de source laser pour émettre un faisceau laser ; un module optique à micromiroir pour recevoir et réfléchir le faisceau laser vers un objet cible, l'objet cible réfléchissant le faisceau laser en retour vers le module optique à micromiroir pour former un faisceau laser réfléchi ; un module de détection optique pour recevoir le faisceau laser réfléchi et convertir le faisceau laser réfléchi en signal électrique ; un module de traitement de données connecté au module de détection optique, le module de traitement de données recevant le signal électrique et effectuant un calcul pour obtenir des données de distance par rapport à l'objet cible. Dans la présente invention, une structure de module laser classique est remplacée par une structure de galvanomètre, de sorte qu'un faisceau laser projeté soit programmable, de façon à offrir plus d'options que des combinaisons fixes de points et de lignes<u>. </u>Des motifs de rayons laser projetés par un instrument peuvent être définis en fonction des besoins réels, de façon à apporter plus de commodité de construction.
PCT/CN2017/118386 2017-03-21 2017-12-25 Laser à lignes croisées WO2018171277A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720277601.6 2017-03-21
CN201720277601.6U CN206989949U (zh) 2017-03-21 2017-03-21 一种激光投线仪

Publications (1)

Publication Number Publication Date
WO2018171277A1 true WO2018171277A1 (fr) 2018-09-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/118386 WO2018171277A1 (fr) 2017-03-21 2017-12-25 Laser à lignes croisées

Country Status (2)

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CN (1) CN206989949U (fr)
WO (1) WO2018171277A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108645384A (zh) * 2018-03-13 2018-10-12 深圳广田机器人有限公司 一种放线仪及放线方法
CN109839103B (zh) * 2019-04-15 2023-06-27 湖南科技大学 用于建筑施工测量的可调型曲线投线仪及用法
CN112269169A (zh) * 2020-11-09 2021-01-26 Oppo广东移动通信有限公司 发射模组、时间飞行器件及电子设备
CN113224631B (zh) * 2021-06-16 2022-07-01 中建中新建设工程有限公司 一种建筑管道定位用激光功率控制方法及定位设备

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US20070044331A1 (en) * 2005-08-26 2007-03-01 Billy Yung Laser leveler with ultrasonic transmitter and receiver
CN101782403A (zh) * 2010-03-09 2010-07-21 武汉方寸科技有限公司 基于线阵ccd的激光投线仪数字化检测装置
CN104849492A (zh) * 2015-04-27 2015-08-19 常州华达科捷光电仪器有限公司 一种用于光电仪器的监控系统及具有该监控系统的激光投线仪
CN205120965U (zh) * 2015-11-13 2016-03-30 武汉理工大学 一种基于mems微镜的激光雷达
CN105973211A (zh) * 2016-06-15 2016-09-28 常州华达科捷光电仪器有限公司 一种激光扫描放样装置

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* Cited by examiner, † Cited by third party
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US20070044331A1 (en) * 2005-08-26 2007-03-01 Billy Yung Laser leveler with ultrasonic transmitter and receiver
CN101782403A (zh) * 2010-03-09 2010-07-21 武汉方寸科技有限公司 基于线阵ccd的激光投线仪数字化检测装置
CN104849492A (zh) * 2015-04-27 2015-08-19 常州华达科捷光电仪器有限公司 一种用于光电仪器的监控系统及具有该监控系统的激光投线仪
CN205120965U (zh) * 2015-11-13 2016-03-30 武汉理工大学 一种基于mems微镜的激光雷达
CN105973211A (zh) * 2016-06-15 2016-09-28 常州华达科捷光电仪器有限公司 一种激光扫描放样装置

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