FR2490666B1 - - Google Patents

Info

Publication number
FR2490666B1
FR2490666B1 FR8018774A FR8018774A FR2490666B1 FR 2490666 B1 FR2490666 B1 FR 2490666B1 FR 8018774 A FR8018774 A FR 8018774A FR 8018774 A FR8018774 A FR 8018774A FR 2490666 B1 FR2490666 B1 FR 2490666B1
Authority
FR
France
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.)
Expired
Application number
FR8018774A
Other languages
French (fr)
Other versions
FR2490666A1 (fr
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR8018774A priority Critical patent/FR2490666A1/fr
Priority to DE19813133118 priority patent/DE3133118A1/de
Priority to CH5505/81A priority patent/CH649574A5/fr
Priority to US06/296,302 priority patent/US4410283A/en
Priority to JP56134379A priority patent/JPS5783578A/ja
Publication of FR2490666A1 publication Critical patent/FR2490666A1/fr
Application granted granted Critical
Publication of FR2490666B1 publication Critical patent/FR2490666B1/fr
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
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G01K11/16—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials
    • G01K11/165—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials of organic liquid crystals
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
    • C09K19/50—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing steroidal liquid crystal compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Liquid Crystal Substances (AREA)
  • Liquid Crystal (AREA)
FR8018774A 1980-08-29 1980-08-29 Cristal liquide cholesterique du type reentrant, et dispositif de detection de temperature utilisant un tel cristal liquide Granted FR2490666A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR8018774A FR2490666A1 (fr) 1980-08-29 1980-08-29 Cristal liquide cholesterique du type reentrant, et dispositif de detection de temperature utilisant un tel cristal liquide
DE19813133118 DE3133118A1 (de) 1980-08-29 1981-08-21 "fluessigkristall und mit diesem betriebene temperaturanzeigevorrichtung"
CH5505/81A CH649574A5 (fr) 1980-08-29 1981-08-26 Cristal liquide cholesterique du type reentrant, et dispositif de detection de temperature le comprenant.
US06/296,302 US4410283A (en) 1980-08-29 1981-08-26 Cholesteric liquid crystal of the reentrant type and a temperature-detecting device entailing the use of a liquid crystal of this type
JP56134379A JPS5783578A (en) 1980-08-29 1981-08-28 Chlesteric liquid crystal and temperature sensor utilizing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8018774A FR2490666A1 (fr) 1980-08-29 1980-08-29 Cristal liquide cholesterique du type reentrant, et dispositif de detection de temperature utilisant un tel cristal liquide

Publications (2)

Publication Number Publication Date
FR2490666A1 FR2490666A1 (fr) 1982-03-26
FR2490666B1 true FR2490666B1 (show.php) 1982-09-03

Family

ID=9245506

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8018774A Granted FR2490666A1 (fr) 1980-08-29 1980-08-29 Cristal liquide cholesterique du type reentrant, et dispositif de detection de temperature utilisant un tel cristal liquide

Country Status (5)

Country Link
US (1) US4410283A (show.php)
JP (1) JPS5783578A (show.php)
CH (1) CH649574A5 (show.php)
DE (1) DE3133118A1 (show.php)
FR (1) FR2490666A1 (show.php)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550981A (en) * 1982-09-30 1985-11-05 Hoffmann-La Roche Inc. Liquid crystalline esters and mixtures
GB2155465B (en) * 1984-01-23 1987-12-31 Dainippon Ink & Chemicals Tolan-type nematic liquid crystalline compounds
DE3710069A1 (de) * 1987-03-27 1988-10-06 Merck Patent Gmbh Ethinderivate
US5394824A (en) * 1992-10-07 1995-03-07 Johnson, Jr.; Lawrence F. Thermochromic sensor for locating an area of contact
US5487352A (en) 1994-09-21 1996-01-30 John R. Williams Temperature indicator for cooked meats
EP2221592A1 (en) 2009-01-22 2010-08-25 Stichting Dutch Polymer Institute Multifunctional optical sensor
CN112903136A (zh) * 2020-09-21 2021-06-04 河北工业大学 一种示温装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697297A (en) * 1970-10-22 1972-10-10 Ncr Co Gelatin-gum arabic capsules containing cholesteric liquid crystal material and dispersions of the capsules
US4137192A (en) * 1974-01-25 1979-01-30 Canon Kabushiki Kaisha Liquid crystalline composition
DE2507904A1 (de) * 1975-02-24 1976-09-02 Harting Elektro W Anschlussverteiler
GB1556994A (en) * 1975-09-03 1979-12-05 Secr Defence Optically active cyanobiphenyl compounds and liquid crystal materials and devices containing them
GB1596012A (en) * 1976-08-16 1981-08-19 Secr Defence Optically active liquid crystal materials and liquid crystal devices containing them
CH626914A5 (show.php) * 1977-03-08 1981-12-15 Bbc Brown Boveri & Cie
US4140016A (en) * 1977-04-07 1979-02-20 Becton, Dickinson And Company Novel compositions, devices and method
FR2404040A1 (fr) * 1977-09-23 1979-04-20 Thomson Csf Cristal liquide a formule chimique contenant un noyau stilbene, et dispositif utilisant un tel cristal liquide
GB2009219B (en) * 1977-11-02 1982-04-28 Secr Defence Liquid ctystal material mixtures and devices incorporating such mixtures

Also Published As

Publication number Publication date
JPS5783578A (en) 1982-05-25
CH649574A5 (fr) 1985-05-31
US4410283A (en) 1983-10-18
FR2490666A1 (fr) 1982-03-26
DE3133118A1 (de) 1982-04-29

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Legal Events

Date Code Title Description
ST Notification of lapse