WO2016039053A1 - Dispositif d'arpentage - Google Patents

Dispositif d'arpentage Download PDF

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Publication number
WO2016039053A1
WO2016039053A1 PCT/JP2015/072373 JP2015072373W WO2016039053A1 WO 2016039053 A1 WO2016039053 A1 WO 2016039053A1 JP 2015072373 W JP2015072373 W JP 2015072373W WO 2016039053 A1 WO2016039053 A1 WO 2016039053A1
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WO
WIPO (PCT)
Prior art keywords
light
measurement
laser
reflected
pointer
Prior art date
Application number
PCT/JP2015/072373
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English (en)
Japanese (ja)
Inventor
太一 湯浅
Original Assignee
株式会社トプコン
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Filing date
Publication date
Application filed by 株式会社トプコン filed Critical 株式会社トプコン
Priority to JP2016547778A priority Critical patent/JPWO2016039053A1/ja
Publication of WO2016039053A1 publication Critical patent/WO2016039053A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00

Definitions

  • the present invention relates to a surveying instrument including a pointer light projection system that projects pointer light onto a measurement target.
  • Patent Document 1 a surveying instrument equipped with a visible laser projector having a visible laser light source that emits pointer light is known (see Patent Document 1).
  • Such a surveying instrument is provided with a collimating optical system for observing a measurement target onto which pointer light is projected by a visible laser projector.
  • the collimating optical system has a perforated objective lens, a focusing lens, an erect image prism, a focusing plate, and an eyepiece lens arranged on the collimating optical axis. , The collimation point image is focused on the focusing screen.
  • the operator can see the image of the survey target on the focusing screen through the eyepiece.
  • Such a surveying instrument is provided with a dichroic mirror that cuts light having a wavelength greater than or equal to the red wavelength, or a photographing optical system that photographs a surveying target through the dichroic mirror. For this reason, the survey target that is collimated through the dichroic mirror is cut in red, so it is collimated as a survey target with strong bluishness (measurement target), and the survey target becomes an unnatural color. Will be observed.
  • An object of the present invention is to provide a surveying apparatus that allows a measurement target to be observed with a natural color.
  • the invention of claim 1 is a pointer light projection system that projects red pointer light onto a measurement target;
  • a surveying instrument comprising: a measurement optical system that measures the position of a measurement object onto which the pointer light is projected; and a collimation optical system that collimates the measurement object,
  • a first dichroic optical element for sharing a part of the optical path of the pointer light receiving system and the collimating optical system and separating the light in the wavelength band of the pointer light and the light in both wavelength bands sandwiching the wavelength band Place and
  • the first dichroic optical element is characterized in that the imaging element of the collimating optical system receives light in both wavelength bands sandwiching the wavelength band of the pointer light.
  • a bright red pointer can be projected onto the measurement object, and the measurement object can be observed with a natural color.
  • FIG. 3 is an optical arrangement diagram showing an arrangement of optical systems provided in a lens barrel portion of the surveying instrument shown in FIGS. 1 and 2.
  • 4 is a graph showing the characteristics of the dichroic mirror in FIG. 3 and the light receiving sensitivity of an image pickup element interposing the dichroic mirror.
  • It is the block diagram which showed the structure of the control system of a surveying instrument. It is the graph which showed the spectral characteristic of the diffuse reflectance of each color. It is the graph which showed the spectral characteristic of the light reception sensitivity in R, G, B of an image sensor.
  • Fig. 1 shows a configuration example of a surveying system.
  • This surveying system includes a surveying instrument 1 that is a surveying device that is a total station with a laser pointer, and a measuring object 2.
  • the surveying instrument 1 captures and tracks the measurement object 2 by irradiating the tracking light 4 which is substantially parallel light after detecting the measurement object 2.
  • the surveying instrument 1 measures the distance by irradiating the distance measuring light 5 and measures the angle by an angle detection unit such as an encoder.
  • the measuring object 2 includes a corner cube 7 which is a reflector that reflects the tracking light 4 and the distance measuring light 5.
  • the surveying instrument 1 is provided in the surveying instrument main body 10, which is mounted on a tripod, the surveying instrument main body 10 that is pivotally supported on the base plate 8 around a vertical axis (not shown), and the surveying instrument main body 10. And a lens barrel portion 12 that is rotatably supported around a horizontal axis (not shown).
  • FIG. 2 shows a surveying system when the measurement target is a non-prism, for example, when the measurement target is a wall 2 ′ or the like. In this surveying system, visible light pointer light P is projected onto the wall 2 from the surveying instrument 1, and the direction and position of the surveying instrument 1 are adjusted so that the pointer light P is projected onto the measurement position 2a of the wall 2 '. .
  • the tracking optical system 31 includes a tracking light irradiation system 42 and a tracking light receiving system 43.
  • the tracking light irradiation system 42 includes a tracking laser light source (second laser light source) 44, a collimator lens 45 that converts the tracking laser light (second laser light) emitted from the tracking laser light source 44 into a parallel light beam, A long pass filter 46, a mirror 47, a dichroic mirror (first dichroic optical element) 48, and a window glass 49 provided on the front surface of the lens barrel 12 are provided.
  • the tracking laser light emitted from the tracking laser light source 44 is infrared light having a wavelength of 792 nm, and the tracking laser light is irradiated from the window glass 49 as the tracking light 4 (see FIG. 1).
  • the optical path of the tracking light irradiation system 42 from the long pass filter 46 to the window glass 49 is common to a part of the optical path of the pointer light projection system 100 described later.
  • the tracking light receiving system 43 includes a window glass 49, a dichroic mirror 48, an objective lens 50, a dichroic prism (second dichroic optical element) 51, and a tracking light receiving element 52.
  • the dichroic mirror 48 transmits light in the wavelength band of measurement light of 620 to 660 nm and reflects light in the wavelength band of 400 to 600 nm and light in the wavelength band of 670 to 750 nm, as shown in the graph G1 of FIG. It has the characteristic to make it.
  • the wavelength band of the measurement light is 640 nm to 680 nm, it has a characteristic of reflecting light having a wavelength band of 400 to 620 nm and light having a wavelength band of 700 to 750 nm. That is, the dichroic mirror 48 has a function of separating light having a wavelength of 400 to 600 nm and light having a wavelength of 670 to 750 nm with respect to light having a wavelength of 620 to 660 nm.
  • the dichroic prism 51 has a reflecting surface 51b.
  • the reflecting surface 51b transmits light having a wavelength of 790 nm or more and reflects light having a wavelength of 790 nm or less.
  • the tracking light receiving element 52 receives light transmitted through the reflecting surface 51 b of the dichroic prism 51.
  • the distance measuring optical system 32 includes a distance measuring light irradiation system (measurement projection system) 60 and a distance measuring light receiving system 70.
  • the distance measuring light irradiation system 60 includes a distance measuring / pointer laser light source (first laser light source) 61 that serves both as a distance measuring device and a pointer, and a laser beam emitted from the distance measuring / pointer laser light source 61 (first laser light source 61).
  • the distance measuring light irradiation system 60 has a common optical path from the long pass filter 46 of the tracking light irradiation system 42 to the window glass 49.
  • the beam splitter 63 is set to reflect approximately 1% of the laser light emitted from the distance measuring / pointer laser light source 61 and transmit approximately 99% of the laser light.
  • the distance measuring light receiving system 70 includes a window glass 49, a dichroic mirror 48, an objective lens 50, a dichroic prism 51, a light receiving stop 71, and a distance measuring light receiving element 72.
  • the light receiving aperture 71 is composed of a disc 71A that adjusts the amount of light received by the ranging light receiving element 72 and a motor (not shown) that rotates the disc 71A. The amount of received light is adjusted by the rotational position of the disc 71A.
  • the distance measuring light receiving system 70 has a common optical path from the window glass 49 of the tracking light receiving system 43 to the reflecting surface 51 b of the dichroic prism 51.
  • Reference numeral 101 denotes a shutter that can be switched between a solid line position (second position) and a broken line position (first position). The shutter 101 is moved to the second position to transmit the laser beam through the beam splitter 63. The light is shielded, and the laser beam reflected by the beam splitter 63 is shielded by being moved to the first position.
  • the pointer light projection system 100 projects the pointer light P (see FIG. 2) toward the measurement object 2, and also uses the distance measurement light irradiation system 60 of the distance measurement optical system 32, and is the same as the measurement projection system. It has a configuration.
  • the shutter 101 When the pointer is projected, the shutter 101 is moved to the solid line position, and when it is used as the reference light of the distance measuring light irradiation system 60, it is moved to the chain line position.
  • the shutter 101 When the shutter 101 is moved to the position of the broken line, approximately 1% of the laser light from the distance / pointer laser light source 61 reflected by the beam splitter 63 is guided to the distance measuring light receiving element 72 as reference light.
  • the wavelength of the laser light emitted from the distance measuring / pointer laser light source 61 may be in the range of 620 to 680 nm.
  • a laser light source having a wavelength of about 630 nm is used, and the laser light is used as pointer laser light (pointer).
  • the imaging optical system 200 images (collimates) the measurement object 2 onto which the pointer light P is projected, and includes a window glass 49, a dichroic mirror 48, a focusing lens 202, an imaging lens 203, and an imaging. Element 204.
  • the optical path from the window glass 49 of the imaging optical system 200 to the dichroic mirror 48 and the optical path from the window glass 49 of the ranging light receiving system 70 to the dichroic mirror 48 are common. That is, the optical path from the window glass 49 of the distance measuring light irradiation system 60 to the dichroic mirror 48 is common.
  • FIG. 5 is a block diagram showing the configuration of the control system of the surveying instrument 1.
  • the operation unit 301 is provided with various operation switches (not shown).
  • Reference numeral 302 denotes a display unit that displays an image captured by the image sensor 204, and this display unit 302 is also provided on the rear surface of the surveying instrument main body 10. Or it can be displayed on a separate tablet.
  • Reference numeral 303 denotes a horizontal driving unit that rotates the surveying instrument main body 10 horizontally
  • 304 denotes a vertical driving unit that rotates the lens barrel unit 12 vertically (rotates about the horizontal axis)
  • 305 denotes a horizontal angle encoder that detects the horizontal angle of the surveying instrument main body 10.
  • 306 is a vertical angle encoder for detecting the vertical angle of the lens barrel 12.
  • the arithmetic control device 310 controls the horizontal driving unit 303 and the vertical driving unit 304 based on the light reception signal of the tracking light receiving element 52 to perform tracking positioning, or the distance measuring / pointer laser light source 61.
  • the light emission of the tracking laser light source 44 is controlled, and various controls are performed based on the operation of the operation unit 301.
  • a search mode for searching the direction of the measuring object 2 is set by operating the operation unit 301.
  • the surveying instrument 1 drives the horizontal driving unit 303 and the vertical driving unit 304 to perform collimation positioning. When the collimation is completed, the surveying instrument 1 shifts to a tracking mode for tracking the measurement object 2. The surveying instrument 1 emits tracking laser light from the tracking laser light source 44.
  • the tracking laser light emitted from the tracking laser light source 44 is converted into a parallel light beam by the collimator lens 45, and the tracking laser light (tracking light 4) converted into the parallel light beam passes through the long pass filter 46 and is mirrored. 47 is reflected toward the measuring object 2 and reaches the dichroic mirror 48. Since the tracking laser light has a wavelength of 750 nm or more, it passes through the dichroic mirror 48. This tracking laser beam is transmitted through the dichroic mirror 48 toward the measurement object 2. The tracking laser light further passes through the window glass 49 and reaches the corner cube 7 of the measuring object 2. The tracking laser light is reflected by the corner cube 7 and enters the window glass 49 of the surveying instrument 1.
  • the tracking laser light incident on the window glass 49 passes through the dichroic mirror 48 and enters the dichroic prism 51 through the objective lens 50.
  • the tracking laser light incident on the dichroic prism 51 has a wavelength of 792 nm, and therefore passes through the reflecting surface 51 b of the dichroic prism 51 and is received by the tracking light receiving element 52.
  • the arithmetic and control unit 310 performs tracking position alignment based on the light reception signal of the tracking light receiving element 52.
  • the position of the center of gravity of the received tracking laser beam is aligned with the center position (collimation center) of the tracking light receiving element 52.
  • the surveying instrument 1 shifts to a measurement mode in which ranging and angle measurement are performed.
  • the emission of the tracking laser light from the tracking laser light source 44 is stopped, and the shutter 101 is moved to the solid line position.
  • pointer laser light is emitted from the distance measuring / pointer laser light source 61 of the pointer light projection system 100.
  • the emitted pointer laser light is converted into a parallel light beam by the collimator lens 62, and the pointer laser light converted into the parallel light beam is transmitted through the beam splitter 63, reflected by the long pass filter 46, and further measured by the mirror 47. Is reflected toward the dichroic mirror 48.
  • the pointer laser light has a wavelength of 630 nm, and the dichroic mirror 48 transmits light having a wavelength of 620 to 660 nm. Therefore, the pointer laser light passes through the dichroic mirror 48.
  • the pointer laser light that has passed through the dichroic mirror 48 passes through the window glass 49 and reaches the corner cube 7 of the measuring object 2.
  • the pointer laser light (pointer light P) has a wavelength of 630 nm and is bright red light.
  • the laser beam for the pointer that has reached the corner cube 7 of the measuring object 2 is reflected here and is incident on the window glass 49 of the surveying instrument 1 and is transmitted through the dichroic mirror 48.
  • the light of the subject that is the measuring object 2 enters the window glass 49 of the lens barrel 12 of the surveying instrument 1 and reaches the dichroic mirror 48.
  • the dichroic mirror 48 reflects light having a wavelength band of 400 to 600 nm and light having a wavelength band of 670 to 750 nm, which are visible light, so that the visible light is reflected by the dichroic mirror 48.
  • it reaches the image sensor 204 via the focusing lens 202 and the imaging lens 203, and an image of the measurement object 2 is formed on the image sensor 204. Then, an image of the measurement object 2 is displayed on the display unit 302.
  • the dichroic mirror 48 transmits light in a wavelength band of 620 to 660 nm, that is, red light, so that an image formed on the image sensor 204 has a red color, and thus an image with a strong bluish color is obtained.
  • the dichroic mirror 48 reflects red light having a wavelength band of 670 to 750 nm, the dichroic mirror 48 can sufficiently cover the missing red color and sufficiently suppress the image from being bluish. .
  • the image displayed on the display unit 302 that is, the image of the measurement object 2 or the wall 2 'has a natural color and is very easy to see.
  • FIG. 6 shows the spectral characteristics of diffuse reflectance (not including regular reflectance) of samples such as color paper.
  • FIG. 7 shows graphs Gr, Gg, and Gb of spectral characteristics of light receiving sensitivity at R, G, and B of the image sensor 204.
  • FIG. 4 shows graphs G2r, G2g, and G2b of spectral characteristics of light receiving sensitivity at R, G, and B of the image sensor 204 when the dichroic mirror 48 is interposed.
  • the red light receiving sensitivity is high. For this reason, the red state in the range of 620 to 660 nm cut by the dichroic mirror 48 is complemented.
  • the wavelength band of 670 to 750 nm since there are green and blue light receiving sensitivities, it becomes the same state that the cut green and blue in the range of 620 to 660 nm are complemented. However, the blue light receiving sensitivity in the wavelength band of 670 to 750 nm is small, and therefore the amount of blue complementation is small.
  • the image picked up by the image pickup element 204 is close to a natural color with blueness suppressed, and the image of the measurement object 2 and the wall 2 ′ displayed on the display unit 302 is very easy to see.
  • the dichroic mirror 48 reflects light in a wavelength band (670 to 750 nm) in which the intensity of red is large and the intensity of green and blue is small. Therefore, the image of the measuring object 2 or the wall 2 'is very easy to see.
  • the shutter 101 is moved to the position of the broken line, and approximately 1% of the distance measurement laser light reflected by the beam splitter 63 is introduced as a reference laser light into an optical fiber (not shown). Then, it is guided to the light receiving element 72 for distance measurement. Thereafter, the shutter 101 is moved to the solid line position, and the distance measuring laser light emitted from the distance measuring / pointer laser light source 61 is collimated by the collimator lens 62, the beam splitter 63, the long pass filter 46, the mirror 47, It reaches the corner cube 7 (measurement position of the wall 2 'in the surveying system in FIG.
  • the dichroic mirror 48 and the window glass 49 via the dichroic mirror 48 and the window glass 49, and reflects and enters the window glass 49 of the surveying instrument 1 here.
  • the light enters the dichroic prism 51 through the dichroic mirror 48 and the objective lens 50, and is received by the ranging light receiving element 72 in the same manner as described above.
  • the ranging light receiving element 72 alternately receives the reference laser beam and the ranging laser beam, and a calculation unit (not shown) of the calculation control device 310 obtains a phase difference between them to measure the object 2 (wall). The distance to the 2 'measuring position 2a) is determined.
  • the light receiving stop 71 is adjusted according to the rotational position so that the light intensity of the reference laser beam and the distance measuring laser beam are the same.
  • the arithmetic and control unit 310 calculates the horizontal angle and the vertical angle by the horizontal angle encoder 305 and the vertical angle encoder 306 while obtaining the distance to the measuring object 2.
  • the pointer light P has a wavelength of 620 to 660 nm
  • the dichroic mirror 48 emits light having a wavelength of 400 to 600 nm and light having a wavelength of 670 to 750 nm with respect to light having a wavelength of 620 to 660 nm.
  • the wavelength of the pointer light P is 620 to 660 nm
  • the dichroic mirror 48 is light having a wavelength of 400 to 620 nm with respect to light having a wavelength of 640 to 680 nm. Even if light having a wavelength of 690 to 750 nm is separated, the same effect as described above can be obtained.
  • the optical axes of the ranging light irradiation system 60, the ranging light receiving system 70, the tracking light irradiation system 42, the pointer light projection system 100, and the photographing optical system 200 are partially coaxial. However, it is not always necessary to be coaxial, and all optical axes may be non-coaxial.
  • the dichroic mirror 48 may be an optical element such as a prism, and the dichroic prism 51 may not be a prism. For example, an optical element such as a mirror may be used.
  • the surveying instrument which measures only the distance to the measuring object on which the pointer was projected, a pointer It can also be applied to a three-dimensional laser scanner (surveying device) for projection.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Optical Distance (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

La présente invention concerne un dispositif d'arpentage qui est pourvu d'un système de projection de lumière de pointeur (100) permettant de projeter une lumière de pointeur, d'un système optique de mesure (32) permettant de mesurer la position d'un objet de mesure, et d'un système optique de collimation (200) permettant de collimater à l'objet de mesure. Les chemins optiques du système optique de mesure (32) et du système optique de collimation (200) ont une partie commune, et un miroir dichroïque (48) permettant de séparer la lumière de la bande de longueur d'onde de la lumière de pointeur et la lumière des bandes de longueur d'onde des deux côtés entourant cette bande de longueur d'onde est disposé sur la partie commune des chemins optiques. Le miroir dichroïque (48) amène un élément d'imagerie (204) à recevoir la lumière incidente des bandes de longueur d'onde des deux côtés entourant la bande de longueur d'onde de la lumière de pointeur.
PCT/JP2015/072373 2014-09-10 2015-08-06 Dispositif d'arpentage WO2016039053A1 (fr)

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JP2016547778A JPWO2016039053A1 (ja) 2014-09-10 2015-08-06 測量装置

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JP2014-184284 2014-09-10
JP2014184284 2014-09-10

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WO2016039053A1 true WO2016039053A1 (fr) 2016-03-17

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018146299A (ja) * 2017-03-02 2018-09-20 株式会社トプコン 測量機
EP3842740A1 (fr) * 2019-12-24 2021-06-30 Topcon Corporation Instrument de surveillance
EP4134621A1 (fr) 2021-08-10 2023-02-15 Topcon Corporation Système, dispositif et procédé de commande
JP7387803B2 (ja) 2018-04-13 2023-11-28 京セラ株式会社 電磁波検出装置および情報取得システム
JP7416647B2 (ja) 2020-03-12 2024-01-17 株式会社トプコン 測量装置

Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2004163164A (ja) * 2002-11-11 2004-06-10 Pentax Precision Co Ltd 自動視準機能と測距機能を有する測量機
JP2004198249A (ja) * 2002-12-18 2004-07-15 Sokkia Co Ltd 光波距離計
JP2006078416A (ja) * 2004-09-13 2006-03-23 Sokkia Co Ltd トータルステーション
JP2006308441A (ja) * 2005-04-28 2006-11-09 Sokkia Co Ltd 光波距離計
JP2008039600A (ja) * 2006-08-07 2008-02-21 Sokkia Co Ltd ダイクロイックプリズムによる光分割した測量機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004163164A (ja) * 2002-11-11 2004-06-10 Pentax Precision Co Ltd 自動視準機能と測距機能を有する測量機
JP2004198249A (ja) * 2002-12-18 2004-07-15 Sokkia Co Ltd 光波距離計
JP2006078416A (ja) * 2004-09-13 2006-03-23 Sokkia Co Ltd トータルステーション
JP2006308441A (ja) * 2005-04-28 2006-11-09 Sokkia Co Ltd 光波距離計
JP2008039600A (ja) * 2006-08-07 2008-02-21 Sokkia Co Ltd ダイクロイックプリズムによる光分割した測量機

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018146299A (ja) * 2017-03-02 2018-09-20 株式会社トプコン 測量機
JP7387803B2 (ja) 2018-04-13 2023-11-28 京セラ株式会社 電磁波検出装置および情報取得システム
US11947068B2 (en) 2018-04-13 2024-04-02 Kyocera Corporation Electromagnetic wave detection apparatus and information acquisition system
EP3842740A1 (fr) * 2019-12-24 2021-06-30 Topcon Corporation Instrument de surveillance
US11668567B2 (en) 2019-12-24 2023-06-06 Topcon Corporation Surveying instrument
JP7416647B2 (ja) 2020-03-12 2024-01-17 株式会社トプコン 測量装置
EP4134621A1 (fr) 2021-08-10 2023-02-15 Topcon Corporation Système, dispositif et procédé de commande

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