JPS57114829A - Optical temperature detector - Google Patents

Optical temperature detector

Info

Publication number
JPS57114829A
JPS57114829A JP17367580A JP17367580A JPS57114829A JP S57114829 A JPS57114829 A JP S57114829A JP 17367580 A JP17367580 A JP 17367580A JP 17367580 A JP17367580 A JP 17367580A JP S57114829 A JPS57114829 A JP S57114829A
Authority
JP
Japan
Prior art keywords
light
temperature
change
flat end
made incident
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
JP17367580A
Other languages
Japanese (ja)
Other versions
JPS627484B2 (en
Inventor
Kazuyoshi Shibata
Shoichi Fushimi
Masaya Yabe
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.)
FUJI DENKI SOUGOU KENKYUSHO KK
Fuji Electric Co Ltd
Original Assignee
FUJI DENKI SOUGOU KENKYUSHO KK
Fuji Electric Corporate Research and Development 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 FUJI DENKI SOUGOU KENKYUSHO KK, Fuji Electric Corporate Research and Development Ltd filed Critical FUJI DENKI SOUGOU KENKYUSHO KK
Priority to JP17367580A priority Critical patent/JPS57114829A/en
Publication of JPS57114829A publication Critical patent/JPS57114829A/en
Publication of JPS627484B2 publication Critical patent/JPS627484B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

PURPOSE:To simplify the structure of a temperature detecting part and to faciliate the production and control of an optical temperature detector, by making use of a change of the multi-wave interference depending on the temperature and the multiplex reflection that is produced when the light is made incident to a pair of parallel flat end faces of a temperature detecting element. CONSTITUTION:The light radiated from a light source 11 propagates through an optical fiber 12 and is turned into parallel beams through a lens 13. These parallel beams are made incident vertically or obliquely to a flat end face 14a of a temperature detecting element 14 and delivered from a flat end face 14b of the element 14 after being reflected repetitively between the faces 14a and 14b to be condensed by a lens 15. This condensed beam propagates in an optical fiber 16 and is made incident to a light receiving part 17 to be measured for its light volume. The intensity of the transmitted light caused by the interference of the light wave is decided by the distance between the faces 14a and 14b plus the optical refractive index of the material used for the element 14. As these distance and refractive index are varied by the temperature, the change of temperature is converted into the change of intensity of the transmitted light.
JP17367580A 1980-12-09 1980-12-09 Optical temperature detector Granted JPS57114829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17367580A JPS57114829A (en) 1980-12-09 1980-12-09 Optical temperature detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17367580A JPS57114829A (en) 1980-12-09 1980-12-09 Optical temperature detector

Publications (2)

Publication Number Publication Date
JPS57114829A true JPS57114829A (en) 1982-07-16
JPS627484B2 JPS627484B2 (en) 1987-02-17

Family

ID=15965009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17367580A Granted JPS57114829A (en) 1980-12-09 1980-12-09 Optical temperature detector

Country Status (1)

Country Link
JP (1) JPS57114829A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61234321A (en) * 1985-04-10 1986-10-18 Hamamatsu Photonics Kk Two-dimensional infrared radiation image detecting device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5566725A (en) * 1978-07-17 1980-05-20 Mitsubishi Electric Corp Temperature detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5566725A (en) * 1978-07-17 1980-05-20 Mitsubishi Electric Corp Temperature detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61234321A (en) * 1985-04-10 1986-10-18 Hamamatsu Photonics Kk Two-dimensional infrared radiation image detecting device
JPH0533331B2 (en) * 1985-04-10 1993-05-19 Hamamatsu Photonics Kk

Also Published As

Publication number Publication date
JPS627484B2 (en) 1987-02-17

Similar Documents

Publication Publication Date Title
CA2086046A1 (en) Apparatus for measuring the effective refractive index in optical fibres
JPS5238939A (en) Optical coupler
JPS57141604A (en) Optical fiber
JPS55142220A (en) Device for measuring wavelength
JPS57114829A (en) Optical temperature detector
JPS57108605A (en) Displacement meter
JPS53113572A (en) Dispersion characteristic measuring device of optical fiber
JPS56106211A (en) Thick-film lens with optical filter
JPS533356A (en) Laser interference
JPS55144567A (en) Optical fiber device for light wave range finder
JPS5582032A (en) Out-off wavelength measuring method for lp11 mode in optical fiber and measuring unit
JPS5413356A (en) Optical excitation of optical fiber
JPS5763430A (en) Temperature measurement for deep part by laser
JPS5435757A (en) Measuring method of refractive index distribution of optical fibers
JPS573020A (en) Temperature measuring method
JPS5374084A (en) Measuring method for refractive index distribution of optical transmission path
JPS5774722A (en) Optical wavelength branching filter
JPS56137137A (en) Optical sensor
JPS57179606A (en) Optical displacement gage
JPS55107930A (en) Temperature measuring instrument
JPS554573A (en) Optical measuring method and optical measuring device
JPS56130606A (en) Optical measuring device for thickness of transparent material
JPS5587923A (en) Optical detector
JPS56145324A (en) Optical temperature sensor
JPS5748710A (en) Optical wave branching filter