GB2120880B - Optical transducers - Google Patents

Optical transducers

Info

Publication number
GB2120880B
GB2120880B GB08311240A GB8311240A GB2120880B GB 2120880 B GB2120880 B GB 2120880B GB 08311240 A GB08311240 A GB 08311240A GB 8311240 A GB8311240 A GB 8311240A GB 2120880 B GB2120880 B GB 2120880B
Authority
GB
United Kingdom
Prior art keywords
optical transducers
transducers
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
Application number
GB08311240A
Other versions
GB2120880A (en
GB8311240D0 (en
Inventor
David Niall Macfadyen
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.)
Thales Optronics Ltd
Original Assignee
Thales Optronics 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 Thales Optronics Ltd filed Critical Thales Optronics Ltd
Priority to GB08311240A priority Critical patent/GB2120880B/en
Publication of GB8311240D0 publication Critical patent/GB8311240D0/en
Publication of GB2120880A publication Critical patent/GB2120880A/en
Application granted granted Critical
Publication of GB2120880B publication Critical patent/GB2120880B/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
    • 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)
GB08311240A 1982-05-11 1983-04-25 Optical transducers Expired GB2120880B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08311240A GB2120880B (en) 1982-05-11 1983-04-25 Optical transducers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8213617 1982-05-11
GB08311240A GB2120880B (en) 1982-05-11 1983-04-25 Optical transducers

Publications (3)

Publication Number Publication Date
GB8311240D0 GB8311240D0 (en) 1983-06-02
GB2120880A GB2120880A (en) 1983-12-07
GB2120880B true GB2120880B (en) 1985-11-06

Family

ID=26282796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08311240A Expired GB2120880B (en) 1982-05-11 1983-04-25 Optical transducers

Country Status (1)

Country Link
GB (1) GB2120880B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209101A (en) * 1987-08-23 1989-04-26 Schlumberger Ind Ltd Optical transducer sensing
GB9022969D0 (en) * 1990-10-23 1990-12-05 Rosemount Ltd Displacement measurement apparatus
GB9109890D0 (en) * 1991-05-08 1991-08-21 Marconi Gec Ltd Apparatus and method for sensing the relative position of two members
JP4880893B2 (en) 2004-11-08 2012-02-22 株式会社ミツトヨ Photoelectric encoder

Also Published As

Publication number Publication date
GB2120880A (en) 1983-12-07
GB8311240D0 (en) 1983-06-02

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Legal Events

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