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FR1130691A - Perfectionnements aux dispositifs de mesure des déplacements - Google Patents

Perfectionnements aux dispositifs de mesure des déplacements

Info

Publication number
FR1130691A
FR1130691A FR1130691DA FR1130691A FR 1130691 A FR1130691 A FR 1130691A FR 1130691D A FR1130691D A FR 1130691DA FR 1130691 A FR1130691 A FR 1130691A
Authority
FR
France
Prior art keywords
measurement devices
displacement measurement
displacement
devices
measurement
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
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR1130691A publication Critical patent/FR1130691A/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)
FR1130691D 1954-09-07 1955-09-05 Perfectionnements aux dispositifs de mesure des déplacements Expired FR1130691A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1130691X 1954-09-07

Publications (1)

Publication Number Publication Date
FR1130691A true FR1130691A (fr) 1957-02-08

Family

ID=10876314

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1130691D Expired FR1130691A (fr) 1954-09-07 1955-09-05 Perfectionnements aux dispositifs de mesure des déplacements

Country Status (1)

Country Link
FR (1) FR1130691A (fr)

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