JPS5796203A - Contactless displacement detector employing optical fiber - Google Patents

Contactless displacement detector employing optical fiber

Info

Publication number
JPS5796203A
JPS5796203A JP17197780A JP17197780A JPS5796203A JP S5796203 A JPS5796203 A JP S5796203A JP 17197780 A JP17197780 A JP 17197780A JP 17197780 A JP17197780 A JP 17197780A JP S5796203 A JPS5796203 A JP S5796203A
Authority
JP
Japan
Prior art keywords
light
optical fiber
fiber
distance
angle
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.)
Pending
Application number
JP17197780A
Other languages
Japanese (ja)
Inventor
Toru Kachi
Satoshi Sugiyama
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.)
Toyota Central R&D Labs Inc
Original Assignee
Toyota Central R&D Labs Inc
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 Toyota Central R&D Labs Inc filed Critical Toyota Central R&D Labs Inc
Priority to JP17197780A priority Critical patent/JPS5796203A/en
Publication of JPS5796203A publication Critical patent/JPS5796203A/en
Pending 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
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/028—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring lateral position of a boundary of the object

Landscapes

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

Abstract

PURPOSE:To manufacture a contactless displacement detector utilizing an optical fiber with a high sensitivity and a wide measuring range by providing an angle between a light projecting optical fiber and a light receiving optical fiber. CONSTITUTION:Light from a light source is irradiated on the surface to be measured through a light projecting optical fiber and a light receiving optical fiber arranged in a probe with an angle and the reflected light is taken out to generate electric signals according to the quantity of the reflected light. The signals are processed to measure displacement of the surface to be measured. For example, light is irradiated on an areas on the surface with a light project- ing fiber 1 at a distance r therefrom and the light from an area S' is received with a light receiving fiber set at a distance d from said fiber with an angle alpha. The relationship of a signal output P according to the quantity of the light to the distance r is as shown by the chart with the angle alpha as parameter. Thus, a wide range of measurement can be done at a high accuracy.
JP17197780A 1980-12-08 1980-12-08 Contactless displacement detector employing optical fiber Pending JPS5796203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17197780A JPS5796203A (en) 1980-12-08 1980-12-08 Contactless displacement detector employing optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17197780A JPS5796203A (en) 1980-12-08 1980-12-08 Contactless displacement detector employing optical fiber

Publications (1)

Publication Number Publication Date
JPS5796203A true JPS5796203A (en) 1982-06-15

Family

ID=15933245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17197780A Pending JPS5796203A (en) 1980-12-08 1980-12-08 Contactless displacement detector employing optical fiber

Country Status (1)

Country Link
JP (1) JPS5796203A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS608913U (en) * 1983-06-30 1985-01-22 アルプス電気株式会社 light sensor
JPS608821U (en) * 1983-06-30 1985-01-22 アルプス電気株式会社 rotary encoder
US4822170A (en) * 1986-04-30 1989-04-18 Commissariat A L'energie Atomique Sensor for the contactless linear measurement of the distance of a target by backscattered radiation
JP2014529740A (en) * 2011-08-26 2014-11-13 クアルコム，インコーポレイテッド Proximity sensor calibration
CN110411354A (en) * 2019-07-29 2019-11-05 重庆大学 Fiber grating wide-range displacement monitor and system
CN110411352A (en) * 2019-07-29 2019-11-05 重庆大学 Displacement monitor and method based on bending loss of optical fiber
CN110411353A (en) * 2019-07-29 2019-11-05 重庆大学 Wide range fiber grating displacement monitor and system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS608913U (en) * 1983-06-30 1985-01-22 アルプス電気株式会社 light sensor
JPS608821U (en) * 1983-06-30 1985-01-22 アルプス電気株式会社 rotary encoder
JPH0226013Y2 (en) * 1983-06-30 1990-07-17
JPH0230727Y2 (en) * 1983-06-30 1990-08-20
US4822170A (en) * 1986-04-30 1989-04-18 Commissariat A L'energie Atomique Sensor for the contactless linear measurement of the distance of a target by backscattered radiation
JP2014529740A (en) * 2011-08-26 2014-11-13 クアルコム，インコーポレイテッド Proximity sensor calibration
JP2016006423A (en) * 2011-08-26 2016-01-14 クアルコム，インコーポレイテッド Proximity sensor calibration
CN110411354A (en) * 2019-07-29 2019-11-05 重庆大学 Fiber grating wide-range displacement monitor and system
CN110411352A (en) * 2019-07-29 2019-11-05 重庆大学 Displacement monitor and method based on bending loss of optical fiber
CN110411353A (en) * 2019-07-29 2019-11-05 重庆大学 Wide range fiber grating displacement monitor and system

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