FR2388250A1 - Mirror angular deviation monitoring system - operates by superimposing images of orthogonal graduated screens - Google Patents

Mirror angular deviation monitoring system - operates by superimposing images of orthogonal graduated screens

Info

Publication number
FR2388250A1
FR2388250A1 FR7711862A FR7711862A FR2388250A1 FR 2388250 A1 FR2388250 A1 FR 2388250A1 FR 7711862 A FR7711862 A FR 7711862A FR 7711862 A FR7711862 A FR 7711862A FR 2388250 A1 FR2388250 A1 FR 2388250A1
Authority
FR
France
Prior art keywords
orthogonal
angular deviation
graduated
operates
monitoring system
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
FR7711862A
Other languages
French (fr)
Other versions
FR2388250B1 (en
Inventor
Llop
Lacuve
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 FR7711862A priority Critical patent/FR2388250A1/en
Publication of FR2388250A1 publication Critical patent/FR2388250A1/en
Application granted granted Critical
Publication of FR2388250B1 publication Critical patent/FR2388250B1/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
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means

Landscapes

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

Abstract

Angular deviation of the reflective surface are monitored by use of a Lummer cube (2). A pair of light sources (41, 51) illuminate adjacent surfaces of the cube, which both lie upon the optical axis of an objective lens (1) by virtue of a semi reflective beam splitting surface (20) in a diagonal plane of the cube. Each surface bears orthogonal graduated tracks with a reference bar (4) and (5) along a central axis. Images of the graduated screens are then projected onto each other with degrees of misaligned indicative of mirror deviation.
FR7711862A 1977-04-20 1977-04-20 Mirror angular deviation monitoring system - operates by superimposing images of orthogonal graduated screens Granted FR2388250A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7711862A FR2388250A1 (en) 1977-04-20 1977-04-20 Mirror angular deviation monitoring system - operates by superimposing images of orthogonal graduated screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7711862A FR2388250A1 (en) 1977-04-20 1977-04-20 Mirror angular deviation monitoring system - operates by superimposing images of orthogonal graduated screens

Publications (2)

Publication Number Publication Date
FR2388250A1 true FR2388250A1 (en) 1978-11-17
FR2388250B1 FR2388250B1 (en) 1980-02-01

Family

ID=9189643

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7711862A Granted FR2388250A1 (en) 1977-04-20 1977-04-20 Mirror angular deviation monitoring system - operates by superimposing images of orthogonal graduated screens

Country Status (1)

Country Link
FR (1) FR2388250A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315690A (en) * 1979-02-27 1982-02-16 Thomson-Csf Arrangement for locating radiating sources

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315690A (en) * 1979-02-27 1982-02-16 Thomson-Csf Arrangement for locating radiating sources

Also Published As

Publication number Publication date
FR2388250B1 (en) 1980-02-01

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Legal Events

Date Code Title Description
ST Notification of lapse