GB2247313B - Optical encoder. - Google Patents

Optical encoder.

Info

Publication number
GB2247313B
GB2247313B GB9121237A GB9121237A GB2247313B GB 2247313 B GB2247313 B GB 2247313B GB 9121237 A GB9121237 A GB 9121237A GB 9121237 A GB9121237 A GB 9121237A GB 2247313 B GB2247313 B GB 2247313B
Authority
GB
United Kingdom
Prior art keywords
optical encoder
encoder
optical
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
GB9121237A
Other versions
GB9121237D0 (en
GB2247313A (en
Inventor
Souji Ichikawa
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
Priority claimed from JP1988130027U external-priority patent/JPH07888Y2/en
Application filed by Mitutoyo Corp filed Critical Mitutoyo Corp
Priority to GB9121237A priority Critical patent/GB2247313B/en
Publication of GB9121237D0 publication Critical patent/GB9121237D0/en
Publication of GB2247313A publication Critical patent/GB2247313A/en
Application granted granted Critical
Publication of GB2247313B publication Critical patent/GB2247313B/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
    • G01D5/38—Forming the light into pulses by diffraction gratings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
GB9121237A 1988-02-22 1991-10-04 Optical encoder. Expired - Fee Related GB2247313B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9121237A GB2247313B (en) 1988-02-22 1991-10-04 Optical encoder.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2203188 1988-02-22
JP1988130027U JPH07888Y2 (en) 1988-02-22 1988-10-04 Optical displacement detector
GB8903837A GB2216256B (en) 1988-02-22 1989-02-20 Optical encoder.
GB9121237A GB2247313B (en) 1988-02-22 1991-10-04 Optical encoder.

Publications (3)

Publication Number Publication Date
GB9121237D0 GB9121237D0 (en) 1991-11-20
GB2247313A GB2247313A (en) 1992-02-26
GB2247313B true GB2247313B (en) 1992-08-19

Family

ID=27264334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9121237A Expired - Fee Related GB2247313B (en) 1988-02-22 1991-10-04 Optical encoder.

Country Status (1)

Country Link
GB (1) GB2247313B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5283434A (en) * 1991-12-20 1994-02-01 Canon Kabushiki Kaisha Displacement detecting device with integral optics
US5390022A (en) * 1992-04-07 1995-02-14 Canon Kabushiki Kaisha Displacement information detection apparatus for receiving a divergent light beam
JPH06194123A (en) * 1992-12-24 1994-07-15 Canon Inc Displacement detecting device
JP3005131B2 (en) * 1992-12-28 2000-01-31 キヤノン株式会社 Displacement detector
EP0741282A3 (en) * 1995-05-04 1998-06-17 CSEM Centre Suisse d'Electronique et de Microtechnique S.A. - Recherche et Développement Optical device to measure the relative displacement between two elements
JP3631551B2 (en) * 1996-01-23 2005-03-23 株式会社ミツトヨ Optical encoder
JP4803641B2 (en) 2005-05-12 2011-10-26 オリンパス株式会社 Optical encoder
EP2613128A4 (en) * 2010-09-02 2014-10-08 Yaskawa Denki Seisakusho Kk Encoder, servomotor, and motor unit
JP6664155B2 (en) * 2015-06-11 2020-03-13 株式会社ミツトヨ Optical encoder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007944A1 (en) * 1986-06-21 1987-12-30 Renishaw Plc Opto-electronic scale reading apparatus
GB2195179A (en) * 1986-09-11 1988-03-30 Synergy Computer Graphics Registration system for a moving substrate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007944A1 (en) * 1986-06-21 1987-12-30 Renishaw Plc Opto-electronic scale reading apparatus
GB2195179A (en) * 1986-09-11 1988-03-30 Synergy Computer Graphics Registration system for a moving substrate

Also Published As

Publication number Publication date
GB9121237D0 (en) 1991-11-20
GB2247313A (en) 1992-02-26

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Legal Events

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

Effective date: 20050220