JPS577514A - Optical measuring device - Google Patents
Optical measuring deviceInfo
- 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
Links
- 230000003287 optical effect Effects 0.000 title abstract 2
- 238000005259 measurement Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000013078 crystal Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
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.
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)
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 |
-
1980
- 1980-06-17 JP JP8171980A patent/JPS577514A/en active Pending
Cited By (5)
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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