GB816723A - Improvements in or relating to devices for measuring the displacement of a movable member relative to a stationary member - Google Patents

Improvements in or relating to devices for measuring the displacement of a movable member relative to a stationary member

Info

Publication number
GB816723A
GB816723A GB25051/57A GB2505157A GB816723A GB 816723 A GB816723 A GB 816723A GB 25051/57 A GB25051/57 A GB 25051/57A GB 2505157 A GB2505157 A GB 2505157A GB 816723 A GB816723 A GB 816723A
Authority
GB
United Kingdom
Prior art keywords
measuring
grids
cells
displacement
relating
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
GB25051/57A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB816723A publication Critical patent/GB816723A/en
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
    • G01D5/12—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 using electric or magnetic means
    • G01D5/244—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—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 using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • 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
    • 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)

Abstract

816,723. Photo-electric measuring apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 8, 1957 [Aug. 11, 1956], No. 25051/57. Class 40 (3). In apparatus for measuring the relative displacement of two members by passing light through two grids 1, 2 carried thereby on to photo-cells 3, 4 which are connected to an elec. tronic comparison apparatus 5 and a counter 6, the grids 1, 2 are made of slightly different pitches so that the signals received by the cells 3, 4 are of opposite phase. The grids may be in contact as shown or may be spaced apart with an optical system between them and with a prism or mirrors to direct the light on to the cells.
GB25051/57A 1956-08-11 1957-08-08 Improvements in or relating to devices for measuring the displacement of a movable member relative to a stationary member Expired GB816723A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL816723X 1956-08-11

Publications (1)

Publication Number Publication Date
GB816723A true GB816723A (en) 1959-07-15

Family

ID=19838910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25051/57A Expired GB816723A (en) 1956-08-11 1957-08-08 Improvements in or relating to devices for measuring the displacement of a movable member relative to a stationary member

Country Status (1)

Country Link
GB (1) GB816723A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1188304B (en) * 1962-08-31 1965-03-04 Hensoldt & Soehne Optik Pulse-counting device for determining the size of the displacement path of an object moving relative to a scale
DE1259588B (en) * 1960-06-25 1968-01-25 Philips Nv Measuring device for determining the displacement of an object according to size and direction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1259588B (en) * 1960-06-25 1968-01-25 Philips Nv Measuring device for determining the displacement of an object according to size and direction
DE1188304B (en) * 1962-08-31 1965-03-04 Hensoldt & Soehne Optik Pulse-counting device for determining the size of the displacement path of an object moving relative to a scale

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