FR1448302A - Détection de défauts de bandes à l'aide de l'interférence de faisceaux multiples - Google Patents

Détection de défauts de bandes à l'aide de l'interférence de faisceaux multiples

Info

Publication number
FR1448302A
FR1448302A FR22234A FR22234A FR1448302A FR 1448302 A FR1448302 A FR 1448302A FR 22234 A FR22234 A FR 22234A FR 22234 A FR22234 A FR 22234A FR 1448302 A FR1448302 A FR 1448302A
Authority
FR
France
Prior art keywords
defect detection
multiple beam
beam interference
band defect
band
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.)
Expired
Application number
FR22234A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR1448302A publication Critical patent/FR1448302A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
FR22234A 1964-06-29 1965-06-25 Détection de défauts de bandes à l'aide de l'interférence de faisceaux multiples Expired FR1448302A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US378587A US3391599A (en) 1964-06-29 1964-06-29 Detection of tape defects by means of multiple beam interference

Publications (1)

Publication Number Publication Date
FR1448302A true FR1448302A (fr) 1966-08-05

Family

ID=23493725

Family Applications (1)

Application Number Title Priority Date Filing Date
FR22234A Expired FR1448302A (fr) 1964-06-29 1965-06-25 Détection de défauts de bandes à l'aide de l'interférence de faisceaux multiples

Country Status (4)

Country Link
US (1) US3391599A (fr)
DE (1) DE1573575A1 (fr)
FR (1) FR1448302A (fr)
GB (1) GB1070336A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232550A1 (de) * 1992-09-29 1994-03-31 Laser Sorter Gmbh Verfahren zur Bestimmung der Größe von Fehlern, insbesondere von Löchern, in Materialien
USRE37752E1 (en) 1992-10-29 2002-06-18 Equinox Corporation Polarization viewer
IL115915A (en) * 1994-11-10 1999-12-22 Lawrence B Wolff Method and apparatus for viewing
KR101231597B1 (ko) * 2010-11-15 2013-02-08 주식회사 고영테크놀러지 검사방법

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2973686A (en) * 1957-10-11 1961-03-07 Gen Precision Inc Apparatus for spectrophotometric monitoring of thin film coatings
US3145252A (en) * 1961-02-21 1964-08-18 Bell Telephone Labor Inc Polychromatic interferometry

Also Published As

Publication number Publication date
DE1573575A1 (de) 1970-06-18
GB1070336A (en) 1967-06-01
US3391599A (en) 1968-07-09

Similar Documents

Publication Publication Date Title
TR17521A (tr) 1-suebstituee-3(4)-aroplpiperidin'ler
FR1439393A (fr) Détecteur de défauts
FR1455729A (fr) Machine à roder
FR1514888A (fr) Perfectionnements relatifs à la filtration
FR1456664A (fr) Circuits de détection d'erreurs
AT279334B (de) Rohrsauger
FR1448302A (fr) Détection de défauts de bandes à l'aide de l'interférence de faisceaux multiples
BR6909752D0 (pt) Compostos de cefalosponina
BR6909343D0 (pt) Novos compostos de pirazol-diazepinona
FR1449084A (fr) Métier à tisser
FR1552704A (fr) Passeur d'échantillons
FR1497971A (fr) Transporteur à poutres de levage
BR6908829D0 (pt) Herbicidas contendo compostos de cloral
FR1530964A (fr) Perfectionnements à l'ourdissage
FR1478469A (fr) Aciers inoxydables se prêtant facilement à un usinage
FR1395292A (fr) Conditionnement-distributeur de boîtes
FR1460514A (fr) Poutre d'échafaudage
FR1400407A (fr) Tracteur du type à demi-châssis
FR1547387A (fr) Casier à huîtres
FR1421644A (fr) Microscope polarisant à interférence
FR1542542A (fr) Instrument de nettoyage
FR1493668A (fr) Perfectionnements aux caisses
FR1405173A (fr) Perfectionnements aux brosses à dents
FR1494746A (fr) Instrument du type à interférence
CH422048A (fr) Tube analyseur d'image