JPS577514A - Optical measuring device - Google Patents

Optical measuring device

Info

Publication number
JPS577514A
JPS577514A JP8171980A JP8171980A JPS577514A JP S577514 A JPS577514 A JP S577514A JP 8171980 A JP8171980 A JP 8171980A JP 8171980 A JP8171980 A JP 8171980A JP S577514 A JPS577514 A JP S577514A
Authority
JP
Japan
Prior art keywords
light
wavelength
laser light
measured
photo detector
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
JP8171980A
Other languages
Japanese (ja)
Inventor
Takeshi Koseki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8171980A priority Critical patent/JPS577514A/en
Publication of JPS577514A publication Critical patent/JPS577514A/en
Pending 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
    • G01D5/268—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 using optical fibres

Abstract

PURPOSE:To perform a high-precise measurement by means of a simple structure, by a method wherein, according to an amount to be measured, reflection or transmitting light output of a wavelength trace laser light by a variable filter, whose reflection or transmission center wavelength changes according to an amount to be measured, and a reference wavelength resonance output of a laser light and a scale resonance output are detected. CONSTITUTION:A laser light from a wavelength trace laser power source 4 is selectively fed to photofibers 3a-3c via a photoswitch 6, and is incident on transducers 1a-1c, consisting of Fabry-Perot in which a dielectric crystal works as a medium, via mode matching optical elements 2a-2c, such as rod lens and the like. Then, a reflection light, having a wavelength corresponding to an amount to be measured, is inputted to a photo detector 10c. Meanwhile, the laser light is inputted to a count circuit 11 via a light isolator 7, a reference resonance 8, and a photo detector 10a to start counting of a scale light from a scale resonator 9 and stop the signal from the photo detector 10c. This permits the high-precise measurement by means of a simple structure.
JP8171980A 1980-06-17 1980-06-17 Optical measuring device Pending JPS577514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8171980A JPS577514A (en) 1980-06-17 1980-06-17 Optical measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8171980A JPS577514A (en) 1980-06-17 1980-06-17 Optical measuring device

Publications (1)

Publication Number Publication Date
JPS577514A true JPS577514A (en) 1982-01-14

Family

ID=13754213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8171980A Pending JPS577514A (en) 1980-06-17 1980-06-17 Optical measuring device

Country Status (1)

Country Link
JP (1) JPS577514A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326199A2 (en) * 1988-01-29 1989-08-02 Plessey Overseas Limited An optical sensing apparatus
JPH02203251A (en) * 1989-02-01 1990-08-13 Agency Of Ind Science & Technol Wavelength sweep type density measuring instrument
FR2658603A1 (en) * 1990-02-20 1991-08-23 Dassault Electronique Method and device for remote acquisition of physical parameters
WO2017090516A1 (en) * 2015-11-24 2017-06-01 日本電気株式会社 Gas detection system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0326199A2 (en) * 1988-01-29 1989-08-02 Plessey Overseas Limited An optical sensing apparatus
JPH02203251A (en) * 1989-02-01 1990-08-13 Agency Of Ind Science & Technol Wavelength sweep type density measuring instrument
JPH0478939B2 (en) * 1989-02-01 1992-12-14 Kogyo Gijutsuin
FR2658603A1 (en) * 1990-02-20 1991-08-23 Dassault Electronique Method and device for remote acquisition of physical parameters
WO2017090516A1 (en) * 2015-11-24 2017-06-01 日本電気株式会社 Gas detection system

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