CA2303629A1 - Capteur optique a deplacement differentiel - ii - Google Patents

Capteur optique a deplacement differentiel - ii Download PDF

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Publication number
CA2303629A1
CA2303629A1 CA002303629A CA2303629A CA2303629A1 CA 2303629 A1 CA2303629 A1 CA 2303629A1 CA 002303629 A CA002303629 A CA 002303629A CA 2303629 A CA2303629 A CA 2303629A CA 2303629 A1 CA2303629 A1 CA 2303629A1
Authority
CA
Canada
Prior art keywords
sensors
patterns
respect
carrier surface
optical sensor
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.)
Granted
Application number
CA002303629A
Other languages
English (en)
Other versions
CA2303629C (fr
Inventor
Pedro Gregorio
Vincent Hayward
Danny Grant
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.)
Immersion Corp
Original Assignee
Individual
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 US09/282,153 external-priority patent/US6020967A/en
Application filed by Individual filed Critical Individual
Publication of CA2303629A1 publication Critical patent/CA2303629A1/fr
Application granted granted Critical
Publication of CA2303629C publication Critical patent/CA2303629C/fr
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
    • G01D5/347—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
    • G01D5/34776—Absolute encoders with analogue or digital scales
    • 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
    • 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
    • G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
    • G01D2205/70—Position sensors comprising a moving target with particular shapes, e.g. of soft magnetic targets
    • G01D2205/77—Specific profiles
    • G01D2205/775—Tapered profiles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
CA002303629A 1999-03-31 2000-03-31 Capteur optique a deplacement differentiel - ii Expired - Fee Related CA2303629C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/282,153 US6020967A (en) 1999-03-31 1999-03-31 Differential displacement optical sensor
US09/282,153 1999-03-31
US49604200A 2000-02-02 2000-02-02
US09/496,042 2000-02-02

Publications (2)

Publication Number Publication Date
CA2303629A1 true CA2303629A1 (fr) 2000-09-30
CA2303629C CA2303629C (fr) 2007-11-20

Family

ID=26961274

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002303629A Expired - Fee Related CA2303629C (fr) 1999-03-31 2000-03-31 Capteur optique a deplacement differentiel - ii

Country Status (3)

Country Link
AU (1) AU3546800A (fr)
CA (1) CA2303629C (fr)
WO (1) WO2000060315A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1209448A1 (fr) * 2000-11-23 2002-05-29 Abb Research Ltd. Codeur optique angulaire ou linéaire
FR2926633B1 (fr) * 2008-01-18 2010-12-24 Crouzet Automatismes Capteur optique
WO2012159771A2 (fr) * 2011-05-26 2012-11-29 Ghanem Husam Capteur ou unité de mesure avec capteur comportant un convertisseur mécanique-électrique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3399347A (en) * 1964-01-09 1968-08-27 Bausch & Lomb Photoelectric system for generating a signal proportional to the movement of a meter
DE2416399A1 (de) * 1974-04-04 1975-10-16 Schwarzer Gmbh Fritz Elektronische schaltung fuer die nachfuehreinrichtung eines registriersystems
GB1563200A (en) * 1975-10-16 1980-03-19 Keystone Int Position-detecting systems
DK137187A (da) * 1986-03-21 1987-09-22 Elitex Zavody Textilniho Optoelektronisk bevaegelsesfoeler

Also Published As

Publication number Publication date
CA2303629C (fr) 2007-11-20
AU3546800A (en) 2000-10-23
WO2000060315A1 (fr) 2000-10-12

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20130402