SE516183C2 - Vätskekristallslutare - Google Patents

Vätskekristallslutare

Info

Publication number
SE516183C2
SE516183C2 SE9503785A SE9503785A SE516183C2 SE 516183 C2 SE516183 C2 SE 516183C2 SE 9503785 A SE9503785 A SE 9503785A SE 9503785 A SE9503785 A SE 9503785A SE 516183 C2 SE516183 C2 SE 516183C2
Authority
SE
Sweden
Prior art keywords
liquid crystal
cell
crystal cell
transmission
state
Prior art date
Application number
SE9503785A
Other languages
English (en)
Swedish (sv)
Other versions
SE9503785D0 (sv
SE9503785L (sv
Inventor
Aake Hoernell
Stephen Palmer
Original Assignee
Hoernell Internat Ab
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 Hoernell Internat Ab filed Critical Hoernell Internat Ab
Priority to SE9503785A priority Critical patent/SE516183C2/sv
Publication of SE9503785D0 publication Critical patent/SE9503785D0/xx
Priority to JP9516547A priority patent/JPH11514457A/ja
Priority to AU73567/96A priority patent/AU7356796A/en
Priority to PCT/SE1996/001374 priority patent/WO1997015256A1/en
Priority to CN 96197859 priority patent/CN1200661A/zh
Priority to EP96935760A priority patent/EP0957852A1/en
Publication of SE9503785L publication Critical patent/SE9503785L/
Publication of SE516183C2 publication Critical patent/SE516183C2/sv

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
    • A61F9/06—Masks, shields or hoods for welders
    • A61F9/065—Masks, shields or hoods for welders use of particular optical filters
    • A61F9/067—Masks, shields or hoods for welders use of particular optical filters with variable transmission
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • 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
    • G02F1/139—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 orientation effects in which the liquid crystal remains transparent

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Nonlinear Science (AREA)
  • Ophthalmology & Optometry (AREA)
  • Biomedical Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Liquid Crystal (AREA)
SE9503785A 1995-10-26 1995-10-26 Vätskekristallslutare SE516183C2 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9503785A SE516183C2 (sv) 1995-10-26 1995-10-26 Vätskekristallslutare
JP9516547A JPH11514457A (ja) 1995-10-26 1996-10-25 液晶シャッター及びそのようなシャッターを有する光遮蔽装置
AU73567/96A AU7356796A (en) 1995-10-26 1996-10-25 A liquid crystal shutter and a light shielding device including such a shutter
PCT/SE1996/001374 WO1997015256A1 (en) 1995-10-26 1996-10-25 A liquid crystal shutter and a light shielding device including such a shutter
CN 96197859 CN1200661A (zh) 1995-10-26 1996-10-25 液晶快门和包括这样一个快门的光屏蔽装置
EP96935760A EP0957852A1 (en) 1995-10-26 1996-10-25 A liquid crystal shutter and a light shielding device including such a shutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9503785A SE516183C2 (sv) 1995-10-26 1995-10-26 Vätskekristallslutare

Publications (3)

Publication Number Publication Date
SE9503785D0 SE9503785D0 (sv) 1995-10-26
SE9503785L SE9503785L (sv) 1997-04-27
SE516183C2 true SE516183C2 (sv) 2001-11-26

Family

ID=20399985

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9503785A SE516183C2 (sv) 1995-10-26 1995-10-26 Vätskekristallslutare

Country Status (6)

Country Link
EP (1) EP0957852A1 (ja)
JP (1) JPH11514457A (ja)
CN (1) CN1200661A (ja)
AU (1) AU7356796A (ja)
SE (1) SE516183C2 (ja)
WO (1) WO1997015256A1 (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002049554A1 (de) * 2000-12-21 2002-06-27 Optrel Ag Blendschutzvorrichtung für schweisser-schutzmasken
JP4382317B2 (ja) * 2001-12-06 2009-12-09 シチズンホールディングス株式会社 液晶可変波長フィルタ装置
AU2003293483A1 (en) * 2002-12-11 2004-06-30 Optiva, Inc. Liquid crystal shutter
EP1821136A1 (en) * 2006-02-17 2007-08-22 Optrel Ag Glare protection device
GB2498726A (en) 2012-01-25 2013-07-31 3M Innovative Properties Co Automatic welding filter with tunable spectral transmission
US20140168546A1 (en) * 2012-12-13 2014-06-19 3M Innovative Properties Company Curved Automatic-Darkening Filter
WO2017172277A1 (en) * 2016-03-28 2017-10-05 Lc-Tec Displays Ab Electro-optic guest-host liquid crystal variable transmission filter with wide viewing angle
AU2017263312B2 (en) 2016-05-12 2019-01-03 3M Innovative Properties Company Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers
WO2023049224A1 (en) 2021-09-22 2023-03-30 Alphamicron Incorporated Multi-color variable transmission optical device
US12222623B2 (en) * 2021-09-22 2025-02-11 Alphamicron Incorporated Laser-protection variable transmission optical device
US12332524B2 (en) 2021-09-22 2025-06-17 Alphamicron Incorporated Color-preserving variable transmission optical device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE425048B (sv) * 1978-04-24 1982-08-30 Ake Hornell Flerskiktsglas, serskilt skyddsglas i en svetsskerm
SE464264B (sv) * 1984-02-24 1991-03-25 Esab Ab Optiskt filter foer svetsskyddsglas
US5208688A (en) * 1991-02-08 1993-05-04 Osd Envizion Company Eye protection device for welding helmets
SE502868C2 (sv) * 1994-04-26 1996-02-05 Hoernell Elektrooptik Ab Svetssnabbfilter med förbättrade vinkelegenskaper

Also Published As

Publication number Publication date
SE9503785D0 (sv) 1995-10-26
SE9503785L (sv) 1997-04-27
CN1200661A (zh) 1998-12-02
WO1997015256A1 (en) 1997-05-01
AU7356796A (en) 1997-05-15
JPH11514457A (ja) 1999-12-07
EP0957852A1 (en) 1999-11-24

Similar Documents

Publication Publication Date Title
EP0005417B1 (en) Multiple layer protective glass
US6097451A (en) Liquid crystal shutter with low twisted nematic liquid crystal cells driven with a low frequency or DC voltage
US10012884B2 (en) High contrast electro-optic liquid crystal camera iris providing angle independent transmission for uniform gray shades
JP6549335B2 (ja) 広視角を有する電気光学ゲストホスト液晶可変透過フィルタ
FI81688B (fi) Optiskt filter foer svetsskyddsglas.
US10928698B2 (en) High contrast liquid crystal light control device providing angle independent variable transmission of incident light for uniform gray shades
US5933207A (en) Reflective-type liquid crystal displays using mixed-mode twist nematic cells
US20040036821A1 (en) Liquid crystal shutter
SE508272C2 (sv) Vätskekristall-slutarkonstruktion, och en ljusskä rmningsanordning innefattande en sådan konstruktion
JPH05506950A (ja) 溶接用ヘルメット等のための目を保護する装置
EP0351200A3 (en) Liquid crystal display apparatus
EP0699938A2 (en) Liquid crystal display
SE516183C2 (sv) Vätskekristallslutare
EP3049864B1 (en) High contrast electro-optic liquid crystal camera iris
US3737211A (en) Ferroelectric-type optical filter
US3972587A (en) Liquid crystal display
JP2940031B2 (ja) 液晶表示素子
US5414546A (en) Dynamic optical notch filter
JP3102012B2 (ja) 波長可変型オプティカル・バンドパスフィルタ
EP1385044A1 (en) High contrast black-and-white cholesteric liquid crystal display
US8026998B2 (en) Variable contrast, wide viewing angle liquid crystal light attenuation filter
GB2219099A (en) Tunable Fabry-Perot filter
TW576939B (en) Color liquid crystal display device
GB2263787A (en) A multi-layer shield

Legal Events

Date Code Title Description
NUG Patent has lapsed