BE814351A - VARIABLE TRANSPARENCY SCREEN - Google Patents

VARIABLE TRANSPARENCY SCREEN

Info

Publication number
BE814351A
BE814351A BE143750A BE143750A BE814351A BE 814351 A BE814351 A BE 814351A BE 143750 A BE143750 A BE 143750A BE 143750 A BE143750 A BE 143750A BE 814351 A BE814351 A BE 814351A
Authority
BE
Belgium
Prior art keywords
variable transparency
transparency screen
screen
variable
transparency
Prior art date
Application number
BE143750A
Other languages
French (fr)
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 filed Critical
Publication of BE814351A publication Critical patent/BE814351A/en

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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Liquid Crystal (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
BE143750A 1973-05-03 1974-04-29 VARIABLE TRANSPARENCY SCREEN BE814351A (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 (1)

Publication Number Publication Date
BE814351A true BE814351A (en) 1974-08-16

Family

ID=11308615

Family Applications (1)

Application Number Title Priority Date Filing Date
BE143750A BE814351A (en) 1973-05-03 1974-04-29 VARIABLE TRANSPARENCY SCREEN

Country Status (4)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2735194C3 (en) * 1977-08-04 1981-06-04 Siemens AG, 1000 Berlin und 8000 München Arrangement for displaying the operating data of a vehicle
DE2735195C2 (en) * 1977-08-04 1982-05-06 Siemens AG, 1000 Berlin und 8000 München Anti-glare rearview mirror
US4893903A (en) * 1985-05-06 1990-01-16 Taliq Corporation Flashing advisory sign
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
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

Also Published As

Publication number Publication date
FR2228234A1 (en) 1974-11-29
DE7415555U (en) 1976-04-29
DE2421485A1 (en) 1974-11-21
IT985834B (en) 1974-12-20
FR2228234B1 (en) 1976-10-15

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