JPS5455487A - Optical thermometer - Google Patents

Optical thermometer

Info

Publication number
JPS5455487A
JPS5455487A JP12275877A JP12275877A JPS5455487A JP S5455487 A JPS5455487 A JP S5455487A JP 12275877 A JP12275877 A JP 12275877A JP 12275877 A JP12275877 A JP 12275877A JP S5455487 A JPS5455487 A JP S5455487A
Authority
JP
Japan
Prior art keywords
temperature
detecting portion
variation
refractive index
varied
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
JP12275877A
Other languages
Japanese (ja)
Other versions
JPS6349171B2 (en
Inventor
Hatsuhiko Naito
Katsutoshi Muto
Shoichi Noda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12275877A priority Critical patent/JPS5455487A/en
Publication of JPS5455487A publication Critical patent/JPS5455487A/en
Publication of JPS6349171B2 publication Critical patent/JPS6349171B2/ja
Granted legal-status Critical Current

Links

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  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

PURPOSE: To improve the temperature metering accuracy by converting the temperature variation into an optical variation with the use of a thermometer, in which reflective and transparent layers having different temperature characteristics of refractive index are combined.
CONSTITUTION: There are juxtaposed in a temperature detecting portion D an optically transparent layer I, which made of a solid substance having a low temperature characteristics of a refractive index n1 such as a crystal LiTaO3, and an optically reflective layer II which is made of a substance having a high temperature characteristics of refractive index n2 such as a crystal of epitaxially grown LiNbO3. Since the refractive indexes of the layers I and II are different, the detecting portion D has its ratio in refractive indexes n1/n2 varied in accordance with the temperature. In accordance with that variation, the intensity of the transmitted light coming from an optical fiber 1 and emanating from an optical fiber 1' through the detecting portion D having its transmissvity varied is caried so that the temperature measurement of high accuracy free from noises can be accomplished through the detecting portion requiring no electric signal
COPYRIGHT: (C)1979,JPO&Japio
JP12275877A 1977-10-12 1977-10-12 Optical thermometer Granted JPS5455487A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12275877A JPS5455487A (en) 1977-10-12 1977-10-12 Optical thermometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12275877A JPS5455487A (en) 1977-10-12 1977-10-12 Optical thermometer

Publications (2)

Publication Number Publication Date
JPS5455487A true JPS5455487A (en) 1979-05-02
JPS6349171B2 JPS6349171B2 (en) 1988-10-03

Family

ID=14843876

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12275877A Granted JPS5455487A (en) 1977-10-12 1977-10-12 Optical thermometer

Country Status (1)

Country Link
JP (1) JPS5455487A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003914A1 (en) * 1981-05-07 1982-11-11 Taniuchi Tetsuo A temperature detector
JPS581627A (en) * 1981-06-23 1983-01-07 東洋製罐株式会社 Method of sterilizing sealed package

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982003914A1 (en) * 1981-05-07 1982-11-11 Taniuchi Tetsuo A temperature detector
JPS581627A (en) * 1981-06-23 1983-01-07 東洋製罐株式会社 Method of sterilizing sealed package
JPS6339225B2 (en) * 1981-06-23 1988-08-04 Toyo Seikan Kaisha Ltd

Also Published As

Publication number Publication date
JPS6349171B2 (en) 1988-10-03

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