FR2402185A1 - METHOD OF GAUGING THE SURFACE OF A PROFILE - Google Patents

METHOD OF GAUGING THE SURFACE OF A PROFILE

Info

Publication number
FR2402185A1
FR2402185A1 FR7824634A FR7824634A FR2402185A1 FR 2402185 A1 FR2402185 A1 FR 2402185A1 FR 7824634 A FR7824634 A FR 7824634A FR 7824634 A FR7824634 A FR 7824634A FR 2402185 A1 FR2402185 A1 FR 2402185A1
Authority
FR
France
Prior art keywords
profile
mirror
path
laser beam
gauging
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
FR7824634A
Other languages
French (fr)
Inventor
Rainer Haberl
Kurt Mravlag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Semperit AG Holding
Original Assignee
Semperit AG Holding
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 Semperit AG Holding filed Critical Semperit AG Holding
Publication of FR2402185A1 publication Critical patent/FR2402185A1/en
Pending legal-status Critical Current

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
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Head (AREA)

Abstract

L'invention est du domaine des procédés optiques de mesure. Elle concerne un procédé de jaugeage de la surface d'un profil défilant de manière continue dans une direction longitudinale. Sur cette surface, on focalise un faisceau de rayons laser, y forme une tache lumineuse, enregistre les variations de l'image de cette tache dues à des variations géométriques et les représente sous forme de signaux analogiques et/ou digitaux, le rayon ou le faisceau laser étant animé d'un mouvement alternatif périodique dans un plan perpendiculaire à la direction de déplacement du profil. Le dispositif correspondant comporte, le long du parcours du faisceau laser : une lentille convergente, une lentille collimatrice, un miroir semi-transparent incliné à 45 degrés sur l'axe optique et sur le trajet du faisceau réfléchi par le profil sur ledit miroir, un miroir déviateur, un système focalisateur, un diaphragme de faible ouverture vibrant, un photodétecteur et un ensemble électronique de traitement des signaux. Application : contrôle de la fabrication par extrusion de produits profilés.The invention relates to the field of optical measurement methods. It relates to a method for gauging the surface of a profile moving continuously in a longitudinal direction. On this surface, a beam of laser rays is focused, a luminous spot is formed there, the variations in the image of this spot due to geometric variations are recorded and they are represented in the form of analog and / or digital signals, the ray or the laser beam being driven by a periodic alternating movement in a plane perpendicular to the direction of movement of the profile. The corresponding device comprises, along the path of the laser beam: a converging lens, a collimating lens, a semi-transparent mirror inclined at 45 degrees on the optical axis and on the path of the beam reflected by the profile on said mirror, a deflector mirror, a focusing system, a vibrating low aperture diaphragm, a photodetector and an electronic signal processing assembly. Application: manufacturing control by extrusion of profiled products.

FR7824634A 1977-08-29 1978-08-25 METHOD OF GAUGING THE SURFACE OF A PROFILE Pending FR2402185A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1049277A CH618261A5 (en) 1977-08-29 1977-08-29

Publications (1)

Publication Number Publication Date
FR2402185A1 true FR2402185A1 (en) 1979-03-30

Family

ID=4363801

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824634A Pending FR2402185A1 (en) 1977-08-29 1978-08-25 METHOD OF GAUGING THE SURFACE OF A PROFILE

Country Status (4)

Country Link
CH (1) CH618261A5 (en)
DE (1) DE2836245A1 (en)
FR (1) FR2402185A1 (en)
GB (1) GB2003693B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8310611D0 (en) * 1983-04-19 1983-05-25 Beta Instr Co Measurement of profiles of irregular objects
DE3543632A1 (en) * 1985-12-11 1987-06-19 Hoechst Ag METHOD AND DEVICE FOR DETERMINING THICKNESS AND / OR ORIENTATION CHANGES WITHIN AN OPTICALLY ACTIVE MATERIAL RAIL
GB201900914D0 (en) 2019-01-23 2019-03-13 Proton Products International Ltd Outline measurements of moving objects

Also Published As

Publication number Publication date
GB2003693B (en) 1982-05-06
DE2836245A1 (en) 1979-03-15
CH618261A5 (en) 1980-07-15
GB2003693A (en) 1979-03-14

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