FR2402220A1 - Dispositif a electrets et systeme d'affichage lumineux comprenant un tel dispositif - Google Patents

Dispositif a electrets et systeme d'affichage lumineux comprenant un tel dispositif

Info

Publication number
FR2402220A1
FR2402220A1 FR7726693A FR7726693A FR2402220A1 FR 2402220 A1 FR2402220 A1 FR 2402220A1 FR 7726693 A FR7726693 A FR 7726693A FR 7726693 A FR7726693 A FR 7726693A FR 2402220 A1 FR2402220 A1 FR 2402220A1
Authority
FR
France
Prior art keywords
electrodes
system including
display system
luminous display
electret
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
FR7726693A
Other languages
English (en)
Other versions
FR2402220B1 (fr
Inventor
Raymond Marcy
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 FR7726693A priority Critical patent/FR2402220A1/fr
Priority to LU80175A priority patent/LU80175A1/fr
Priority to BE190181A priority patent/BE870113A/fr
Priority to DE2838277A priority patent/DE2838277C3/de
Priority to JP10802778A priority patent/JPS5449100A/ja
Priority to NL7808984A priority patent/NL7808984A/xx
Priority to GB7835499A priority patent/GB2006944B/en
Publication of FR2402220A1 publication Critical patent/FR2402220A1/fr
Application granted granted Critical
Publication of FR2402220B1 publication Critical patent/FR2402220B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/0472—Traffic signs
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
    • G09F9/372—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the positions of the elements being controlled by the application of an electric field

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

Dispositif à électrets qui, placé sur le trajet d'une source de lumière S, permet d'en modifier les caractéristiques, notamment l'intensité et la couleur. Dispositif comprenant une structure isolante transparente T, un ensemble d'électrets colorés 30i, 30j, etc., un premier jeu d'électrodes opaques 10i, 10j, etc., un second jeu d'électrodes transparentes 20i, 20j, l'ensemble des électrets peut être basculé de façon coordonnée contre chaque jeu d'électrodes. Application aux systèmes d'affichage lumineux, notamment aux feux polychromes de signalisation routière.
FR7726693A 1977-09-02 1977-09-02 Dispositif a electrets et systeme d'affichage lumineux comprenant un tel dispositif Granted FR2402220A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7726693A FR2402220A1 (fr) 1977-09-02 1977-09-02 Dispositif a electrets et systeme d'affichage lumineux comprenant un tel dispositif
LU80175A LU80175A1 (fr) 1977-09-02 1978-08-30 Dispositif a electrets et systeme d'affichage lumineux comprenant un tel dispositif
BE190181A BE870113A (fr) 1977-09-02 1978-08-31 Dispositif a electrets et systeme d'affichage lumineux comprenant un tel dispositif
DE2838277A DE2838277C3 (de) 1977-09-02 1978-09-01 Vorrichtung zur Beeinflussung der Leuchtdichte und/oder der Farbe eines Lichtstrahles
JP10802778A JPS5449100A (en) 1977-09-02 1978-09-01 Electret and light emitting display system having same
NL7808984A NL7808984A (nl) 1977-09-02 1978-09-01 Electreteninrichting.
GB7835499A GB2006944B (en) 1977-09-02 1978-09-04 Electret devices and illuminated indicator systems incorporating them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7726693A FR2402220A1 (fr) 1977-09-02 1977-09-02 Dispositif a electrets et systeme d'affichage lumineux comprenant un tel dispositif

Publications (2)

Publication Number Publication Date
FR2402220A1 true FR2402220A1 (fr) 1979-03-30
FR2402220B1 FR2402220B1 (fr) 1982-01-08

Family

ID=9194993

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7726693A Granted FR2402220A1 (fr) 1977-09-02 1977-09-02 Dispositif a electrets et systeme d'affichage lumineux comprenant un tel dispositif

Country Status (7)

Country Link
JP (1) JPS5449100A (fr)
BE (1) BE870113A (fr)
DE (1) DE2838277C3 (fr)
FR (1) FR2402220A1 (fr)
GB (1) GB2006944B (fr)
LU (1) LU80175A1 (fr)
NL (1) NL7808984A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001627A1 (fr) * 1984-08-21 1986-03-13 Simpson George R Dispositifs binaires disposes en panneaux et actionnes electrostatiquement
US4736202A (en) * 1984-08-21 1988-04-05 Bos-Knox, Ltd. Electrostatic binary switching and memory devices
US4794370A (en) * 1984-08-21 1988-12-27 Bos-Knox Ltd. Peristaltic electrostatic binary device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1303597B1 (it) * 1998-12-09 2000-11-14 Fiat Ricerche Dispositivo ottico e stato di funzionamento variabile, in particolareotturatore o specchio, a controllo elettrostatico.
US6427910B1 (en) * 1999-12-17 2002-08-06 International Business Machines Corporation Method for managing and updating overloaded cards

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3897997A (en) * 1974-02-01 1975-08-05 Charles G Kalt Electrostatic display device with variable reflectivity

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001627A1 (fr) * 1984-08-21 1986-03-13 Simpson George R Dispositifs binaires disposes en panneaux et actionnes electrostatiquement
US4736202A (en) * 1984-08-21 1988-04-05 Bos-Knox, Ltd. Electrostatic binary switching and memory devices
US4794370A (en) * 1984-08-21 1988-12-27 Bos-Knox Ltd. Peristaltic electrostatic binary device

Also Published As

Publication number Publication date
NL7808984A (nl) 1979-03-06
LU80175A1 (fr) 1979-02-12
DE2838277B2 (de) 1981-01-22
DE2838277A1 (de) 1979-03-08
DE2838277C3 (de) 1981-10-01
GB2006944B (en) 1982-01-13
GB2006944A (en) 1979-05-10
BE870113A (fr) 1978-12-18
FR2402220B1 (fr) 1982-01-08
JPS5449100A (en) 1979-04-18

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Legal Events

Date Code Title Description
ST Notification of lapse