FR2432158A1 - Rotating disc profile measuring system - uses laser beams deflected by pentagonal prisms onto right angled prisms fixed rigidly to displacement levers - Google Patents

Rotating disc profile measuring system - uses laser beams deflected by pentagonal prisms onto right angled prisms fixed rigidly to displacement levers

Info

Publication number
FR2432158A1
FR2432158A1 FR7822382A FR7822382A FR2432158A1 FR 2432158 A1 FR2432158 A1 FR 2432158A1 FR 7822382 A FR7822382 A FR 7822382A FR 7822382 A FR7822382 A FR 7822382A FR 2432158 A1 FR2432158 A1 FR 2432158A1
Authority
FR
France
Prior art keywords
prisms
right angled
fixed rigidly
displacement
levers
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.)
Granted
Application number
FR7822382A
Other languages
French (fr)
Other versions
FR2432158B1 (en
Inventor
Claude-Alain Letort
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.)
Societe dOptique Precision Electronique et Mecanique SOPELEM SA
Original Assignee
Societe dOptique Precision Electronique et Mecanique SOPELEM SA
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 Societe dOptique Precision Electronique et Mecanique SOPELEM SA filed Critical Societe dOptique Precision Electronique et Mecanique SOPELEM SA
Priority to FR7822382A priority Critical patent/FR2432158A1/en
Publication of FR2432158A1 publication Critical patent/FR2432158A1/en
Application granted granted Critical
Publication of FR2432158B1 publication Critical patent/FR2432158B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/0011—Arrangements for eliminating or compensation of measuring errors due to temperature or weight
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/28—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication
    • G01D5/30—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The system utilises the unique rectilinear properties of laser light to obtain a metrologically precise measurement of deviations from perfect shape. Mechanical sensors using articulated levers transform translation and inclination movements into electrical signals via optical links. Laser beam components (F1 - F5) are deflected by pentagonal prisms (8, 9, 19, 26) onto right angled prisms (13-16, 25) fixed rigidly to the displacement levers Reflected beams are detected by photo cells (17-20, 27) providing analogue signals which are functions of prism displacement. Laser, beam splitters and photo cells are kept stable on an optical bench (12). Signals proportional to axial and radial deviations which are sufficient to define the profile of the plate, can constitute matrix elements in computer-solvable simultaneous linear equations to calculate plate profile in particular angular orientations.
FR7822382A 1978-07-28 1978-07-28 Rotating disc profile measuring system - uses laser beams deflected by pentagonal prisms onto right angled prisms fixed rigidly to displacement levers Granted FR2432158A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7822382A FR2432158A1 (en) 1978-07-28 1978-07-28 Rotating disc profile measuring system - uses laser beams deflected by pentagonal prisms onto right angled prisms fixed rigidly to displacement levers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7822382A FR2432158A1 (en) 1978-07-28 1978-07-28 Rotating disc profile measuring system - uses laser beams deflected by pentagonal prisms onto right angled prisms fixed rigidly to displacement levers

Publications (2)

Publication Number Publication Date
FR2432158A1 true FR2432158A1 (en) 1980-02-22
FR2432158B1 FR2432158B1 (en) 1980-12-05

Family

ID=9211319

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7822382A Granted FR2432158A1 (en) 1978-07-28 1978-07-28 Rotating disc profile measuring system - uses laser beams deflected by pentagonal prisms onto right angled prisms fixed rigidly to displacement levers

Country Status (1)

Country Link
FR (1) FR2432158A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579745A1 (en) * 1985-03-28 1986-10-03 Usinor Method and device for measuring the dimensions of a body of revolution and their applications
FR2620817A1 (en) * 1987-09-17 1989-03-24 Ngk Insulators Ltd METHOD FOR MEASURING THE CONTOUR CONFIGURATION OF AN OBJECT DEFINED BY MANY CYLINDRICAL SURFACE PARTS

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB947209A (en) * 1959-02-06 1964-01-22 Gen Precision Inc Improvements in optical goniometers
FR1575662A (en) * 1968-04-03 1969-07-25
DE1548350A1 (en) * 1966-02-22 1970-05-21 Wenczler & Heidenhain Optical straight line
FR2244154A1 (en) * 1973-09-17 1975-04-11 Strasmann Prazisions Werkzeug

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB947209A (en) * 1959-02-06 1964-01-22 Gen Precision Inc Improvements in optical goniometers
DE1548350A1 (en) * 1966-02-22 1970-05-21 Wenczler & Heidenhain Optical straight line
FR1575662A (en) * 1968-04-03 1969-07-25
FR2244154A1 (en) * 1973-09-17 1975-04-11 Strasmann Prazisions Werkzeug

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2579745A1 (en) * 1985-03-28 1986-10-03 Usinor Method and device for measuring the dimensions of a body of revolution and their applications
FR2620817A1 (en) * 1987-09-17 1989-03-24 Ngk Insulators Ltd METHOD FOR MEASURING THE CONTOUR CONFIGURATION OF AN OBJECT DEFINED BY MANY CYLINDRICAL SURFACE PARTS
BE1003159A3 (en) * 1987-09-17 1991-12-17 Ngk Insulators Ltd METHOD FOR MEASURING ARTICLE CONTOUR CONFIGURATIONS.

Also Published As

Publication number Publication date
FR2432158B1 (en) 1980-12-05

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Legal Events

Date Code Title Description
ST Notification of lapse