WO2004088357A1 - Appareil de mesure de distance sans contact, notamment telemetre laser - Google Patents

Appareil de mesure de distance sans contact, notamment telemetre laser Download PDF

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Publication number
WO2004088357A1
WO2004088357A1 PCT/DE2003/004070 DE0304070W WO2004088357A1 WO 2004088357 A1 WO2004088357 A1 WO 2004088357A1 DE 0304070 W DE0304070 W DE 0304070W WO 2004088357 A1 WO2004088357 A1 WO 2004088357A1
Authority
WO
WIPO (PCT)
Prior art keywords
collimator
measuring device
optics carrier
receiving seat
distance measurement
Prior art date
Application number
PCT/DE2003/004070
Other languages
German (de)
English (en)
Inventor
Joerg Stierle
Peter Wolf
Kai Renz
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2004088357A1 publication Critical patent/WO2004088357A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs

Definitions

  • Measuring device for non-contact distance measurement especially laser rangefinder
  • the invention is based on a measuring device for non-contact distance measurement, in particular a laser range finder, according to the preamble of claim 1.
  • Such a measuring device designed as a hand-held device is known, for example, from DE 198 04 051 A1.
  • the measuring device works according to the principle of transit time measurement and has an optical transmitter and an optical receiver.
  • the transmitting device has a collimator, which comprises a laser diode and a collimator lens, which are combined in a tubular housing.
  • the collimator is a commercially available, self-contained unit that is rigidly connected to the optics carrier. The rigid connection is necessary so that once the measuring device has been adjusted, it does not have to be readjusted. Gluing or screwing are used as known techniques for fastening the collimator to the optics carrier. Advantages of the invention
  • the measuring device with the features of claim 1 has the advantage that with the press fit of the collimator according to the invention on a receiving seat formed on the optics carrier, a simple, time-saving, inexpensive fastening of the collimator in the optics carrier is achieved, which allows the collimator to be dismantled without destruction, which is what Repair and recycling simplified.
  • no complex processes are required for the integration of the collimator into the optics carrier during assembly.
  • Gluing is very time-consuming due to the required lying and pot times. Cleanliness is just as important as the properties of the adhesive in question. Screwing the collimator requires a sufficiently large wall thickness of the collimator housing to make threaded holes in order to achieve the required strength.
  • the collimator fastening according to the invention achieves the same thermal stability as gluing or screwing and meets the high strength requirements over a predetermined temperature range.
  • the collimator is pressed onto the receiving seat by a compressive force acting diametrically on the collimator seat, the compressive force being applied by a prestressed compression spring.
  • a steel spring or preferably a plastic spring, for example as Eladur is used as the compression spring. The latter enables a smaller structure than a steel spring.
  • the prestressing of the compression spring is generated by means of a tendon, for example a commercially available threaded screw that can be screwed into a threaded hole in the optics carrier. This has the advantage that the prestressing force of the spring can be adjusted via the insertion depth of the tendon.
  • the preloaded compression spring takes up tolerances on changes in travel.
  • the collimator has a rotationally symmetrical collimator housing, and the receiving seat comprises two by an angle of rotation, e.g. 90 ° or 120 °, staggered pads.
  • the compression spring acts on the collimator in such a way that the axis of the compression spring is aligned radially and coincides with the bisector of the angle of rotation between the supports.
  • the supports preferably each have an arcuate surface contour whose arc radius corresponds to the outer diameter of the collimator.
  • each support has at least two spaced, protruding support bumps. These support humps bridge roughness and unevenness in the surface of the supports, and the collimator lies very precisely against the supports.
  • the invention is based on one shown in the drawing
  • FIG. 1 shows a detail of a cross section of an optics carrier of a laser rangefinder, shown schematically, 2 is an enlarged view of section II in FIG. 1st
  • a laser rangefinder as an exemplary embodiment of a measuring device for non-contact distance measurement has, in a known manner, a device module enclosed by a housing, which module consists of an optics carrier and a circuit board attached to the optics carrier.
  • the transmission and reception path contain corresponding optical components, such as the transmission path a collimator with a laser diode and a collimator lens.
  • the laser diode and collimator lens are integrated in a tubular housing, which is fixed on the optics carrier 11 after insertion into the transmission path.
  • FIG. 1 shows a section of a cross section of the optics carrier 11 in the region of a receiving chamber 12 for the collimator 13, of which only the cylindrical collimator housing 14 is shown in FIG. 1.
  • a prism-like receiving seat 15 is formed with two supports 16 which are offset from one another by an angle of rotation ⁇ .
  • the supports 16 have an arcuate surface contour with an arc radius corresponding to the outer diameter of the collimator housing 14.
  • a stepped bore 17 is made in the optics carrier 11 such that its bore axis is aligned with the bisector of the angle of rotation ⁇ .
  • the front bore section 171 facing away from the receiving chamber 12 and having the larger bore diameter is designed as a threaded bore and has an internal thread 18.
  • Bore section 172 with the smaller bore diameter is a spring element 19, which is supported on the collimator housing 14 on its side facing away from the receiving seat 15.
  • the abutment for the spring element 19 is formed by a clamping member 20 which can be screwed into the internal thread 18 of the bore section 171.
  • the spring element 19 which is supported on the one hand on the collimator housing 14 and on the other hand on the tensioning member 20, is prestressed and presses the collimator housing 14 onto the two supports 16 of the receiving seat 15 with a defined compressive force.
  • the prestressing of the spring element 19 can be adjusted by means of the tension member 20 by screwing the tension member 20 more or less deeply into the bore section 171.
  • the spring element 19 is designed as a compression spring 22, which is supported with its spring ends via a spring plate 23 or 24 on the tensioning member 20 and on the collimator housing 14, the latter spring plate 24 on its from the compression spring 22 opposite side has a curved contact surface, the radius of curvature of which corresponds to the outer radius of the collimator housing 14.
  • the compression spring 22 can be a steel spring, but to reduce the installation volume a plastic spring, e.g. from Eladur, preferred.
  • the pretension of the compression spring 22 and thus the pressure force with which the collimator 13 is clamped on the receiving seat 15 in the receiving chamber 12 is determined by means of the tension member 20, that is, the cap screw 21.
  • the insulation is realized with an insulating coating 26 applied to the inner wall 121 of the receiving chamber 12.
  • An insulating coating on the outer wall of the collimator housing 14 or on both is also possible.

Abstract

L'invention concerne un appareil de mesure de distance sans contact, notamment un télémètre laser, qui présente un porte-optique (11) et un collimateur (13) fixé à ce dernier. L'objectif de l'invention et de permettre d'obtenir une fixation thermiquement stable, rapide à monter et pouvant être démontée de manière non destructive. A cet effet, un siège de logement (15), fixant la position du collimateur (13), est monté dans le porte-optique (11) et le collimateur (13) est bloqué par liaison de force sur le siège de logement (15).
PCT/DE2003/004070 2003-03-31 2003-12-10 Appareil de mesure de distance sans contact, notamment telemetre laser WO2004088357A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10314774.8 2003-03-31
DE2003114774 DE10314774A1 (de) 2003-03-31 2003-03-31 Messgerät zur berührungslosen Abstandsmessung, insbesondere Laserentfernungsmesser

Publications (1)

Publication Number Publication Date
WO2004088357A1 true WO2004088357A1 (fr) 2004-10-14

Family

ID=32980908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2003/004070 WO2004088357A1 (fr) 2003-03-31 2003-12-10 Appareil de mesure de distance sans contact, notamment telemetre laser

Country Status (2)

Country Link
DE (1) DE10314774A1 (fr)
WO (1) WO2004088357A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109839070A (zh) * 2017-11-27 2019-06-04 上海华银电器有限公司 一种制动器气隙检测装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021120256B3 (de) 2020-08-28 2021-12-09 Ifm Electronic Gmbh Lasermodul mit einer Linsenhalterung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62185260A (ja) * 1986-02-12 1987-08-13 Canon Inc 光源装置
JPH0350512A (ja) * 1989-07-19 1991-03-05 Canon Inc 光源装置
JPH03113842A (ja) * 1989-09-27 1991-05-15 Canon Inc レーザー光源装置
DE29618728U1 (de) * 1996-10-28 1997-01-30 Koester Detlef Justierlaser für Reflektoren
JPH1123932A (ja) * 1997-06-30 1999-01-29 Nikon Corp レンズ保持装置
DE19804059A1 (de) * 1998-02-03 1999-08-05 Bosch Gmbh Robert Vorrichtung zur optischen Distanzmessung
JP2002156605A (ja) * 2000-11-20 2002-05-31 Fuji Photo Film Co Ltd コリメータレンズの位置決め方法および装置
JP2003075756A (ja) * 2001-08-31 2003-03-12 Hitachi Koki Co Ltd 光走査装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62185260A (ja) * 1986-02-12 1987-08-13 Canon Inc 光源装置
JPH0350512A (ja) * 1989-07-19 1991-03-05 Canon Inc 光源装置
JPH03113842A (ja) * 1989-09-27 1991-05-15 Canon Inc レーザー光源装置
DE29618728U1 (de) * 1996-10-28 1997-01-30 Koester Detlef Justierlaser für Reflektoren
JPH1123932A (ja) * 1997-06-30 1999-01-29 Nikon Corp レンズ保持装置
DE19804059A1 (de) * 1998-02-03 1999-08-05 Bosch Gmbh Robert Vorrichtung zur optischen Distanzmessung
JP2002156605A (ja) * 2000-11-20 2002-05-31 Fuji Photo Film Co Ltd コリメータレンズの位置決め方法および装置
JP2003075756A (ja) * 2001-08-31 2003-03-12 Hitachi Koki Co Ltd 光走査装置

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 034 (P - 662) 2 February 1988 (1988-02-02) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 198 (P - 1204) 22 May 1991 (1991-05-22) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 316 (P - 1237) 13 August 1991 (1991-08-13) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 04 30 April 1999 (1999-04-30) *
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 09 4 September 2002 (2002-09-04) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 07 3 July 2003 (2003-07-03) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109839070A (zh) * 2017-11-27 2019-06-04 上海华银电器有限公司 一种制动器气隙检测装置

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