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GB2241780B - A distance measuring system - Google Patents

A distance measuring system

Info

Publication number
GB2241780B
GB2241780B GB9104933A GB9104933A GB2241780B GB 2241780 B GB2241780 B GB 2241780B GB 9104933 A GB9104933 A GB 9104933A GB 9104933 A GB9104933 A GB 9104933A GB 2241780 B GB2241780 B GB 2241780B
Authority
GB
United Kingdom
Prior art keywords
distance measuring
measuring system
distance
measuring
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 - Lifetime
Application number
GB9104933A
Other versions
GB9104933D0 (en
GB2241780A (en
Inventor
Noriyuki Nose
Minoru Yoshii
Yukichi Niwa
Ryo Kuroda
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP62112266A external-priority patent/JPH068726B2/en
Priority claimed from JP62112264A external-priority patent/JPH0648170B2/en
Priority claimed from JP62112263A external-priority patent/JPS63277923A/en
Priority claimed from JP62112265A external-priority patent/JPS63277925A/en
Priority claimed from GB8811133A external-priority patent/GB2205397B/en
Application filed by Canon Inc filed Critical Canon Inc
Publication of GB9104933D0 publication Critical patent/GB9104933D0/en
Publication of GB2241780A publication Critical patent/GB2241780A/en
Application granted granted Critical
Publication of GB2241780B publication Critical patent/GB2241780B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
GB9104933A 1987-05-11 1991-03-08 A distance measuring system Expired - Lifetime GB2241780B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP62112266A JPH068726B2 (en) 1987-05-11 1987-05-11 Length measuring device
JP62112264A JPH0648170B2 (en) 1987-05-11 1987-05-11 Displacement measuring device
JP62112263A JPS63277923A (en) 1987-05-11 1987-05-11 Length measuring instrument
JP62112265A JPS63277925A (en) 1987-05-11 1987-05-11 Length measuring instrument
GB8811133A GB2205397B (en) 1987-05-11 1988-05-11 A distance measuring system

Publications (3)

Publication Number Publication Date
GB9104933D0 GB9104933D0 (en) 1991-04-24
GB2241780A GB2241780A (en) 1991-09-11
GB2241780B true GB2241780B (en) 1992-01-15

Family

ID=27516812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9104933A Expired - Lifetime GB2241780B (en) 1987-05-11 1991-03-08 A distance measuring system

Country Status (1)

Country Link
GB (1) GB2241780B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4113046C2 (en) * 1991-04-22 1994-02-10 Zeiss Carl Jena Gmbh Optoelectronic position measuring device
DE59104973D1 (en) * 1991-11-23 1995-04-20 Heidenhain Gmbh Dr Johannes Interferential measuring device.
DE4318129A1 (en) * 1993-06-01 1994-12-08 Bosch Gmbh Robert Device for measuring movement between two parts
DE19524725C1 (en) * 1995-07-07 1996-07-11 Zeiss Carl Jena Gmbh Photoelectric encoder for scanning optical structures, e.g. for angle measurement device,
RU2179707C1 (en) * 2001-04-04 2002-02-20 Общество С Ограниченной Ответственностью "Инсмат Технология" Process determining distance to radiation source
JP6786442B2 (en) * 2017-05-23 2020-11-18 Dmg森精機株式会社 Displacement detector

Also Published As

Publication number Publication date
GB9104933D0 (en) 1991-04-24
GB2241780A (en) 1991-09-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20030511