CA2098153A1 - Fiber Optic Curvature and Displacement Sensor - Google Patents

Fiber Optic Curvature and Displacement Sensor

Info

Publication number
CA2098153A1
CA2098153A1 CA 2098153 CA2098153A CA2098153A1 CA 2098153 A1 CA2098153 A1 CA 2098153A1 CA 2098153 CA2098153 CA 2098153 CA 2098153 A CA2098153 A CA 2098153A CA 2098153 A1 CA2098153 A1 CA 2098153A1
Authority
CA
Canada
Prior art keywords
curvature
light
curved
loss
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.)
Granted
Application number
CA 2098153
Other languages
French (fr)
Other versions
CA2098153C (en
Inventor
Lee A. Danisch
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.)
Individual
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 to CA002098153A priority Critical patent/CA2098153C/en
Application filed by Individual filed Critical Individual
Priority to EP94918255A priority patent/EP0702780B1/en
Priority to AT94918255T priority patent/ATE159586T1/en
Priority to PCT/CA1994/000314 priority patent/WO1994029671A1/en
Priority to AU69670/94A priority patent/AU6967094A/en
Priority to DE69406447T priority patent/DE69406447T2/en
Priority to JP7501141A priority patent/JPH08511343A/en
Publication of CA2098153A1 publication Critical patent/CA2098153A1/en
Application granted granted Critical
Publication of CA2098153C publication Critical patent/CA2098153C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)

Abstract

A curvature or bending and displacement sensor is composed of a fiber optic or light wave guide, for attachment to a member or members being curved or displaced. Light is injected at one end and detected at the other end. Curvature of the fibre results in light loss through an emission surface or surfaces, sometimes in conjunction with a superimposed curvature in a plane other than that of the curvature to be measured, this loss being detected. The loss of light detection is used to produce indication of curvature or displacement. The light emission surfaces extend in a substantially circumferential direction, or in a substantially curved axial direction when in a curved portion of a curved guide. The placement, shape and configuration of the emission surfaces allows adjustment of the linear range of measurement, the overall throughput of light, and the length over which curvature is measured. Two or more light guides can be oriented to given indication of direction of curvature or displacement.
CA002098153A 1993-06-10 1993-06-10 Fiber optic curvature and displacement sensor Expired - Lifetime CA2098153C (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA002098153A CA2098153C (en) 1993-06-10 1993-06-10 Fiber optic curvature and displacement sensor
AT94918255T ATE159586T1 (en) 1993-06-10 1994-06-01 FIBER OPTICAL BENDING AND POSITIONING SENSOR
PCT/CA1994/000314 WO1994029671A1 (en) 1993-06-10 1994-06-01 Fiber optic bending and positioning sensor
AU69670/94A AU6967094A (en) 1993-06-10 1994-06-01 Fiber optic bending and positioning sensor
EP94918255A EP0702780B1 (en) 1993-06-10 1994-06-01 Fiber optic bending and positioning sensor
DE69406447T DE69406447T2 (en) 1993-06-10 1994-06-01 FIBER OPTICAL BENDING AND POSITIONING SENSOR
JP7501141A JPH08511343A (en) 1993-06-10 1994-06-01 Fiber Optic Bending and Positioning Sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002098153A CA2098153C (en) 1993-06-10 1993-06-10 Fiber optic curvature and displacement sensor

Publications (2)

Publication Number Publication Date
CA2098153A1 true CA2098153A1 (en) 1994-12-11
CA2098153C CA2098153C (en) 2000-03-14

Family

ID=4151776

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002098153A Expired - Lifetime CA2098153C (en) 1993-06-10 1993-06-10 Fiber optic curvature and displacement sensor

Country Status (1)

Country Link
CA (1) CA2098153C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109855545A (en) * 2019-04-02 2019-06-07 中国科学院国家天文台 A kind of telescoping mechanism based on light wave displacement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109855545A (en) * 2019-04-02 2019-06-07 中国科学院国家天文台 A kind of telescoping mechanism based on light wave displacement
CN109855545B (en) * 2019-04-02 2024-03-15 中国科学院国家天文台 Telescopic mechanism based on optical wave measurement displacement

Also Published As

Publication number Publication date
CA2098153C (en) 2000-03-14

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20130610