FR2228234A1 - - Google Patents

Info

Publication number
FR2228234A1
FR2228234A1 FR7415031A FR7415031A FR2228234A1 FR 2228234 A1 FR2228234 A1 FR 2228234A1 FR 7415031 A FR7415031 A FR 7415031A FR 7415031 A FR7415031 A FR 7415031A FR 2228234 A1 FR2228234 A1 FR 2228234A1
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.)
Granted
Application number
FR7415031A
Other languages
French (fr)
Other versions
FR2228234B1 (en
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.)
Fiat SpA
Original Assignee
Fiat SpA
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 Fiat SpA filed Critical Fiat SpA
Publication of FR2228234A1 publication Critical patent/FR2228234A1/fr
Application granted granted Critical
Publication of FR2228234B1 publication Critical patent/FR2228234B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector
FR7415031A 1973-05-03 1974-04-30 Expired FR2228234B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6823673A IT985834B (en) 1973-05-03 1973-05-03 VARIABLE TRANSPARENCY SCREEN

Publications (2)

Publication Number Publication Date
FR2228234A1 true FR2228234A1 (en) 1974-11-29
FR2228234B1 FR2228234B1 (en) 1976-10-15

Family

ID=11308615

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7415031A Expired FR2228234B1 (en) 1973-05-03 1974-04-30

Country Status (4)

Country Link
BE (1) BE814351A (en)
DE (2) DE2421485A1 (en)
FR (1) FR2228234B1 (en)
IT (1) IT985834B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735194A1 (en) * 1977-08-04 1979-02-08 Siemens Ag METHOD FOR DISPLAYING OPERATING DATA OF A VEHICLE, IN PARTICULAR MOTOR VEHICLE
EP0202067A2 (en) * 1985-05-06 1986-11-20 Raychem Corporation Flashing advisory sign
EP0272871A2 (en) * 1986-12-18 1988-06-29 Xerox Corporation Liquid crystal voltmeter
US5153760A (en) * 1990-06-13 1992-10-06 Ahmed Adel A A Oscillating photovoltaic optical shutter for reflective display

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735195C2 (en) * 1977-08-04 1982-05-06 Siemens AG, 1000 Berlin und 8000 München Anti-glare rearview mirror
DE4121383A1 (en) * 1991-06-28 1993-01-07 Bayerische Motoren Werke Ag Brightening electrochromic window of motor vehicle - short-circuiting electro=optical layer system for darkened window
DE4121845A1 (en) * 1991-07-02 1993-01-07 Hohe Kg Sun-visor for motor vehicle windscreen - is controlled by electronic circuit to provide sun screening effect only when required
DE4420789A1 (en) * 1994-06-15 1995-12-21 Raimund Dr Schmitz Electronically-dimming driving mirror for motor vehicle
DE102006006690B4 (en) * 2006-02-14 2008-07-03 Audi Ag Anti-glare device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735194A1 (en) * 1977-08-04 1979-02-08 Siemens Ag METHOD FOR DISPLAYING OPERATING DATA OF A VEHICLE, IN PARTICULAR MOTOR VEHICLE
EP0202067A2 (en) * 1985-05-06 1986-11-20 Raychem Corporation Flashing advisory sign
EP0202067A3 (en) * 1985-05-06 1989-03-08 Raychem Corporation Flashing advisory sign
US4893903A (en) * 1985-05-06 1990-01-16 Taliq Corporation Flashing advisory sign
EP0272871A2 (en) * 1986-12-18 1988-06-29 Xerox Corporation Liquid crystal voltmeter
EP0272871A3 (en) * 1986-12-18 1988-07-27 Xerox Corporation Liquid crystal voltmeter
US4786858A (en) * 1986-12-18 1988-11-22 Xerox Corporation Liquid crystal electrostatic voltmeter
US5153760A (en) * 1990-06-13 1992-10-06 Ahmed Adel A A Oscillating photovoltaic optical shutter for reflective display

Also Published As

Publication number Publication date
DE7415555U (en) 1976-04-29
IT985834B (en) 1974-12-20
FR2228234B1 (en) 1976-10-15
BE814351A (en) 1974-08-16
DE2421485A1 (en) 1974-11-21

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Legal Events

Date Code Title Description
ST Notification of lapse