FR2336675A1 - Strip material scanning system - uses laser and rotating mirror with position encoding grating to give optical scan - Google Patents

Strip material scanning system - uses laser and rotating mirror with position encoding grating to give optical scan

Info

Publication number
FR2336675A1
FR2336675A1 FR7638587A FR7638587A FR2336675A1 FR 2336675 A1 FR2336675 A1 FR 2336675A1 FR 7638587 A FR7638587 A FR 7638587A FR 7638587 A FR7638587 A FR 7638587A FR 2336675 A1 FR2336675 A1 FR 2336675A1
Authority
FR
France
Prior art keywords
grating
strip material
rotating mirror
scanning system
optical scan
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.)
Withdrawn
Application number
FR7638587A
Other languages
French (fr)
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.)
Feldmuehle Anlagen und Produktion GmbH
Original Assignee
Feldmuehle Anlagen und Produktion 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 Feldmuehle Anlagen und Produktion GmbH filed Critical Feldmuehle Anlagen und Produktion GmbH
Publication of FR2336675A1 publication Critical patent/FR2336675A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/8901—Optical details; Scanning details

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The optical scanning equipment for examining strip material consists of a laser light source and rotating multiplier mirror. The rotating mirror causes the laser beam to be deflected over the complete width of the band of material under investigation. The scanning beam passes through an angled clear glass screen and light reflected from the material passes to photomultiplier detectors. The beam is partially reflected by the transparent screen onto a grating. Light passing through the grating falls onto a detector whose pulse output is used to encode the position of the scanning beam across the width of the material.
FR7638587A 1975-12-22 1976-12-21 Strip material scanning system - uses laser and rotating mirror with position encoding grating to give optical scan Withdrawn FR2336675A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752558008 DE2558008A1 (en) 1975-12-22 1975-12-22 METHOD AND DEVICE FOR OPTICAL INSPECTION OF RAILWAY GUARDS

Publications (1)

Publication Number Publication Date
FR2336675A1 true FR2336675A1 (en) 1977-07-22

Family

ID=5965289

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7638587A Withdrawn FR2336675A1 (en) 1975-12-22 1976-12-21 Strip material scanning system - uses laser and rotating mirror with position encoding grating to give optical scan

Country Status (4)

Country Link
JP (1) JPS5280195A (en)
DE (1) DE2558008A1 (en)
FR (1) FR2336675A1 (en)
SE (1) SE7614195L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19646888C1 (en) * 1996-11-13 1998-04-23 Schoeller Felix Jun Foto Device for calibrating track material examination system using scanning light beam

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3410643A (en) * 1961-04-14 1968-11-12 Saint Gobain Apparatus for detecting and recording the locations of defects in sheet material in two dimensions
US3596060A (en) * 1967-05-04 1971-07-27 Alexander Inc Optical scanning unit for mark sensing
US3835249A (en) * 1972-12-26 1974-09-10 Ibm Scanning light synchronization system
US9871773B2 (en) * 2005-09-28 2018-01-16 Encryptics, Llc Method and system for digital rights management of documents

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3410643A (en) * 1961-04-14 1968-11-12 Saint Gobain Apparatus for detecting and recording the locations of defects in sheet material in two dimensions
US3596060A (en) * 1967-05-04 1971-07-27 Alexander Inc Optical scanning unit for mark sensing
US3835249A (en) * 1972-12-26 1974-09-10 Ibm Scanning light synchronization system
US9871773B2 (en) * 2005-09-28 2018-01-16 Encryptics, Llc Method and system for digital rights management of documents

Also Published As

Publication number Publication date
JPS5629779B2 (en) 1981-07-10
JPS5280195A (en) 1977-07-05
SE7614195L (en) 1977-06-23
DE2558008A1 (en) 1977-06-23

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse