GB2238865B - Photoelectric displacement detector - Google Patents

Photoelectric displacement detector

Info

Publication number
GB2238865B
GB2238865B GB8927392A GB8927392A GB2238865B GB 2238865 B GB2238865 B GB 2238865B GB 8927392 A GB8927392 A GB 8927392A GB 8927392 A GB8927392 A GB 8927392A GB 2238865 B GB2238865 B GB 2238865B
Authority
GB
United Kingdom
Prior art keywords
displacement detector
photoelectric displacement
photoelectric
detector
displacement
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 - Fee Related
Application number
GB8927392A
Other versions
GB2238865A (en
GB8927392D0 (en
Inventor
Norihito Hikawa
Wataru Ishibashi
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.)
Mitutoyo Corp
Original Assignee
Mitutoyo 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 Mitutoyo Corp filed Critical Mitutoyo Corp
Priority to GB8927392A priority Critical patent/GB2238865B/en
Priority to DE19893940387 priority patent/DE3940387A1/en
Publication of GB8927392D0 publication Critical patent/GB8927392D0/en
Publication of GB2238865A publication Critical patent/GB2238865A/en
Application granted granted Critical
Publication of GB2238865B publication Critical patent/GB2238865B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
GB8927392A 1989-12-04 1989-12-04 Photoelectric displacement detector Expired - Fee Related GB2238865B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8927392A GB2238865B (en) 1989-12-04 1989-12-04 Photoelectric displacement detector
DE19893940387 DE3940387A1 (en) 1989-12-04 1989-12-06 PHOTOELECTRIC MOTION DETECTOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8927392A GB2238865B (en) 1989-12-04 1989-12-04 Photoelectric displacement detector

Publications (3)

Publication Number Publication Date
GB8927392D0 GB8927392D0 (en) 1990-01-31
GB2238865A GB2238865A (en) 1991-06-12
GB2238865B true GB2238865B (en) 1994-01-26

Family

ID=10667398

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8927392A Expired - Fee Related GB2238865B (en) 1989-12-04 1989-12-04 Photoelectric displacement detector

Country Status (2)

Country Link
DE (1) DE3940387A1 (en)
GB (1) GB2238865B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0669518B1 (en) * 1994-02-23 2000-01-19 Dr. Johannes Heidenhain GmbH Device to generate position dependant signals

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318617A (en) * 1979-12-14 1982-03-09 Keuffel & Esser Company DC Shift error correction for electro-optical measuring system
WO1984001824A1 (en) * 1982-10-27 1984-05-10 Foxboro Co Fiber optic displacement sensor with built-in reference
EP0232625A1 (en) * 1985-12-28 1987-08-19 Aisin-Warner Kabushiki Kaisha Optical rotary encoder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3007311C2 (en) * 1980-02-27 1985-11-28 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Digital photoelectric length or angle measuring system
DE3334400C1 (en) * 1983-09-23 1985-06-05 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Photoelectric position-measuring device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318617A (en) * 1979-12-14 1982-03-09 Keuffel & Esser Company DC Shift error correction for electro-optical measuring system
WO1984001824A1 (en) * 1982-10-27 1984-05-10 Foxboro Co Fiber optic displacement sensor with built-in reference
EP0232625A1 (en) * 1985-12-28 1987-08-19 Aisin-Warner Kabushiki Kaisha Optical rotary encoder

Also Published As

Publication number Publication date
DE3940387A1 (en) 1991-06-13
GB2238865A (en) 1991-06-12
GB8927392D0 (en) 1990-01-31

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Legal Events

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

Effective date: 20061204