GB2023281B - Position encoders - Google Patents

Position encoders

Info

Publication number
GB2023281B
GB2023281B GB7827204A GB7827204A GB2023281B GB 2023281 B GB2023281 B GB 2023281B GB 7827204 A GB7827204 A GB 7827204A GB 7827204 A GB7827204 A GB 7827204A GB 2023281 B GB2023281 B GB 2023281B
Authority
GB
United Kingdom
Prior art keywords
position encoders
encoders
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
GB7827204A
Other versions
GB2023281A (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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB7827204A priority Critical patent/GB2023281B/en
Priority to DE19782839880 priority patent/DE2839880C3/en
Priority to FR7916812A priority patent/FR2428855B1/en
Publication of GB2023281A publication Critical patent/GB2023281A/en
Application granted granted Critical
Publication of GB2023281B publication Critical patent/GB2023281B/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
    • G01D5/26—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
    • G01D5/347—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 using displacement encoding scales
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
    • G01D5/34715—Scale reading or illumination devices
    • G01D5/34723—Scale reading or illumination devices involving light-guides

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Length Measuring Devices By Optical Means (AREA)
GB7827204A 1978-06-17 1978-06-17 Position encoders Expired GB2023281B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB7827204A GB2023281B (en) 1978-06-17 1978-06-17 Position encoders
DE19782839880 DE2839880C3 (en) 1978-06-17 1978-09-13 Device for determining the change in position of an object
FR7916812A FR2428855B1 (en) 1978-06-17 1979-06-18 POSITION ENCODER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7827204A GB2023281B (en) 1978-06-17 1978-06-17 Position encoders

Publications (2)

Publication Number Publication Date
GB2023281A GB2023281A (en) 1979-12-28
GB2023281B true GB2023281B (en) 1983-08-17

Family

ID=10498016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827204A Expired GB2023281B (en) 1978-06-17 1978-06-17 Position encoders

Country Status (3)

Country Link
DE (1) DE2839880C3 (en)
FR (1) FR2428855B1 (en)
GB (1) GB2023281B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135313A (en) * 1981-02-16 1982-08-20 Fanuc Ltd Pulse encoder
ATA395181A (en) * 1981-09-14 1986-12-15 Rieder Heinz HAND MEASURING DEVICE
US4656347A (en) * 1984-01-30 1987-04-07 Nippon Telegraph & Telephone Public Corporation Diffraction grating position adjuster using a grating and a reflector
FR2591736A1 (en) * 1985-12-17 1987-06-19 Bazenet Jean Pierre System for measuring the linear displacement of a cylindrical rod such as a thruster cylinder rod, thruster cylinder adapted for such a measurement and method of manufacture thereof
DE4023323A1 (en) * 1990-07-21 1992-01-23 Krieg Gunther Position sensor relative measurement of relatively movable parts - has two optical grids with light conductors for reflected light measurement in grip overcap region
DE9011628U1 (en) * 1990-08-09 1991-12-12 Hohner Elektrotechnik KG, 7200 Tuttlingen Optoelectronic arrangement for scanning code carriers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1145807B (en) * 1958-01-21 1963-03-21 Philips Nv Device for measuring changes in the position of a movable organ in relation to a reference system
DE1220152B (en) * 1963-08-23 1966-06-30 Wenczler & Heidenhain Device for canting error-free measurement of lengths
DE1259621B (en) * 1965-03-25 1968-01-25 Telefunken Patent Photoelectric measuring generator
GB1159033A (en) * 1965-08-04 1969-07-23 Molins Machine Co Ltd Improvements relating to Optical Inspection Devices.
AT288050B (en) * 1968-01-29 1971-02-25 Leitz Ernst Gmbh Device for measuring lengths or angles
US3524067A (en) * 1968-06-26 1970-08-11 Ibm Compact line grating position sensing device
US3983391A (en) * 1975-05-21 1976-09-28 Itek Corporation Optical encoder of the reflective type

Also Published As

Publication number Publication date
DE2839880A1 (en) 1979-12-20
DE2839880B2 (en) 1980-07-31
FR2428855B1 (en) 1985-11-15
FR2428855A1 (en) 1980-01-11
GB2023281A (en) 1979-12-28
DE2839880C3 (en) 1981-04-30

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee