WO2000060409A8 - Gradateur a cristaux liquides - Google Patents

Gradateur a cristaux liquides

Info

Publication number
WO2000060409A8
WO2000060409A8 PCT/JP2000/001874 JP0001874W WO0060409A8 WO 2000060409 A8 WO2000060409 A8 WO 2000060409A8 JP 0001874 W JP0001874 W JP 0001874W WO 0060409 A8 WO0060409 A8 WO 0060409A8
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal material
dichroic dye
dimmer
absorptance
Prior art date
Application number
PCT/JP2000/001874
Other languages
English (en)
Japanese (ja)
Other versions
WO2000060409A1 (fr
Inventor
Yuichi Yano
Original Assignee
Nippon Sheet Glass Co Ltd
Yuichi Yano
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
Priority claimed from JP2000037347A external-priority patent/JP2000347222A/ja
Priority claimed from JP2000037384A external-priority patent/JP2000347223A/ja
Application filed by Nippon Sheet Glass Co Ltd, Yuichi Yano filed Critical Nippon Sheet Glass Co Ltd
Publication of WO2000060409A1 publication Critical patent/WO2000060409A1/fr
Publication of WO2000060409A8 publication Critical patent/WO2000060409A8/fr

Links

Classifications

    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13725—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on guest-host interaction

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Abstract

L'invention concerne un gradateur à cristaux liquides dans lequel des films conducteurs transparents sont prévus sur les faces opposées d'une paire de substrats transparents et dans lequel un milieu contenant un matériau à cristaux liquides ainsi qu'un colorant dichroïque aligné selon l'alignement du matériau à cristaux liquides. L'indice de double réfraction (Δn) du matériau à cristaux liquides est inférieur à 0,15. La relation entre l'absorptance (A//) le long de l'axe principal de la molécule de colorant dichroïque et l'absorptance (A ) le long de l'axe mineur de celle-ci, est exprimée par 1,0≥[A//-A )/(A//+2a )]≥0,75. L'invention porte sur un autre gradateur à cristaux liquides dans lequel le rapport (teneur en cristaux liquides) entre le matériau à cristaux liquides et le milieu est de 50 % en poids ou plus, le rapport entre la concentration de colorant dichroïque et celle du cristal liquide est de 1 % ou plus, et la distance entre les films conducteurs transparents est de l'ordre de 10 à 40 νm.
PCT/JP2000/001874 1999-04-02 2000-03-27 Gradateur a cristaux liquides WO2000060409A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP11/96013 1999-04-02
JP9643999 1999-04-02
JP11/96439 1999-04-02
JP9601399 1999-04-02
JP2000/37347 2000-02-16
JP2000/37384 2000-02-16
JP2000037347A JP2000347222A (ja) 1999-04-02 2000-02-16 液晶調光体
JP2000037384A JP2000347223A (ja) 1999-04-02 2000-02-16 液晶調光体

Publications (2)

Publication Number Publication Date
WO2000060409A1 WO2000060409A1 (fr) 2000-10-12
WO2000060409A8 true WO2000060409A8 (fr) 2000-11-23

Family

ID=27468383

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/001874 WO2000060409A1 (fr) 1999-04-02 2000-03-27 Gradateur a cristaux liquides

Country Status (1)

Country Link
WO (1) WO2000060409A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556289A (en) * 1983-03-21 1985-12-03 Manchester R & D Partnership Low birefringence encapsulated liquid crystal and optical shutter using same
JP2548967B2 (ja) * 1988-05-28 1996-10-30 タキロン株式会社 調光材用シート、調光材及びその製造方法
US5156452A (en) * 1989-07-20 1992-10-20 Paul Drzaic Encapsulated liquid crystal apparatus having low off-axis haze and operable by a sine-wave power source
JPH05112780A (ja) * 1991-10-23 1993-05-07 Mitsubishi Kasei Corp 調光材料およびそれを含む調光素子
JPH09143472A (ja) * 1995-09-18 1997-06-03 Mitsubishi Chem Corp 液晶組成物

Also Published As

Publication number Publication date
WO2000060409A1 (fr) 2000-10-12

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