FR2016904B1 - - Google Patents

Info

Publication number
FR2016904B1
FR2016904B1 FR696933570A FR6933570A FR2016904B1 FR 2016904 B1 FR2016904 B1 FR 2016904B1 FR 696933570 A FR696933570 A FR 696933570A FR 6933570 A FR6933570 A FR 6933570A FR 2016904 B1 FR2016904 B1 FR 2016904B1
Authority
FR
France
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
FR696933570A
Other versions
FR2016904A1 (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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2016904A1 publication Critical patent/FR2016904A1/fr
Application granted granted Critical
Publication of FR2016904B1 publication Critical patent/FR2016904B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/32—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 attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • G01D5/38—Forming the light into pulses by diffraction gratings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Polarising Elements (AREA)
FR696933570A 1968-08-08 1969-08-08 Expired FR2016904B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6811252A NL6811252A (fr) 1968-08-08 1968-08-08

Publications (2)

Publication Number Publication Date
FR2016904A1 FR2016904A1 (fr) 1970-05-15
FR2016904B1 true FR2016904B1 (fr) 1974-06-28

Family

ID=19804316

Family Applications (1)

Application Number Title Priority Date Filing Date
FR696933570A Expired FR2016904B1 (fr) 1968-08-08 1969-08-08

Country Status (10)

Country Link
US (1) US3630622A (fr)
JP (1) JPS5245225B1 (fr)
BE (1) BE737145A (fr)
CA (1) CA965499A (fr)
CH (1) CH531163A (fr)
DE (1) DE1939005C3 (fr)
FR (1) FR2016904B1 (fr)
GB (1) GB1282048A (fr)
NL (1) NL6811252A (fr)
SE (1) SE356588B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240968A1 (de) * 1972-08-21 1974-03-07 Leitz Ernst Gmbh Optisches verfahren zur messung der relativen verschiebung eines beugungsgitters sowie einrichtungen zu seiner durchfuehrung
US3842261A (en) * 1973-12-20 1974-10-15 Itek Corp Optical encoder using diffraction imagery in a reflective mode
FR2439382A1 (fr) * 1978-10-19 1980-05-16 Experim Rech Etu Batim Centre Procede et dispositif pour mesurer les deformations d'un subjectile au moyen d'un reseau
US4824208A (en) * 1984-08-28 1989-04-25 Talig Corporation Display for contrast enhancement
US4967072A (en) * 1984-09-05 1990-10-30 Canon Kabushiki Kaisha Interferometric rotating condition detection apparatus
JPS60190812A (ja) * 1984-10-26 1985-09-28 Hitachi Ltd 位置検出器
GB2185314B (en) * 1986-01-14 1990-09-26 Canon Kk Encoder
DE3607462A1 (de) * 1986-03-07 1987-09-10 Philips Patentverwaltung Anordnung zur messung der spannungsdoppelbrechung eines optischen sensors
JPH073344B2 (ja) * 1987-06-15 1995-01-18 キヤノン株式会社 エンコ−ダ−
EP0486050B1 (fr) * 1990-11-16 1998-02-04 Canon Kabushiki Kaisha Méthode et appareil pour mesurer un déplacement
JP2862417B2 (ja) * 1990-11-16 1999-03-03 キヤノン株式会社 変位測定装置及び方法
US5104225A (en) * 1991-01-25 1992-04-14 Mitutoyo Corporation Position detector and method of measuring position
DE19537081A1 (de) * 1995-10-05 1997-04-10 Happich Gmbh Gebr Dachhimmel für Fahrzeuge
US5894531A (en) * 1997-03-11 1999-04-13 Karta Technology, Inc. Method and apparatus for detection of ultrasound using a fiber-optic interferometer
CN105784327B (zh) * 2016-03-03 2018-04-03 南京理工大学 用于测定复合零级波片装配误差的装置与方法
CN109738167A (zh) * 2019-03-05 2019-05-10 中国工程物理研究院流体物理研究所 一种光栅的二维线密度测量方法及系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1548703B2 (de) * 1966-07-16 1971-04-15 Ernst Leitz Gmbh, 6330 Wetzlar Fotoelektrischer schrittgeber fuer vierphasen signale
CH457204A (de) * 1966-07-21 1968-05-31 Leitz Ernst Gmbh Fotoelektrischer Schrittgeber
DE1548707C3 (de) * 1966-07-26 1979-02-15 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Fotoelektrischer Schrittgeber
US3496364A (en) * 1968-01-23 1970-02-17 Dynamics Res Corp Linear encoder having a fringe pattern produced by optical imaging

Also Published As

Publication number Publication date
DE1939005C3 (de) 1980-04-24
DE1939005B2 (de) 1979-08-09
US3630622A (en) 1971-12-28
NL6811252A (fr) 1970-02-10
BE737145A (fr) 1970-02-06
GB1282048A (en) 1972-07-19
FR2016904A1 (fr) 1970-05-15
CA965499A (en) 1975-04-01
JPS5245225B1 (fr) 1977-11-14
DE1939005A1 (de) 1970-02-12
SE356588B (fr) 1973-05-28
CH531163A (de) 1972-11-30

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Legal Events

Date Code Title Description
ST Notification of lapse