WO2000054097A3 - Aktive elektrooptische filtereinrichtung und verfahren zu ihrem betrieb - Google Patents

Aktive elektrooptische filtereinrichtung und verfahren zu ihrem betrieb Download PDF

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Publication number
WO2000054097A3
WO2000054097A3 PCT/CH2000/000040 CH0000040W WO0054097A3 WO 2000054097 A3 WO2000054097 A3 WO 2000054097A3 CH 0000040 W CH0000040 W CH 0000040W WO 0054097 A3 WO0054097 A3 WO 0054097A3
Authority
WO
WIPO (PCT)
Prior art keywords
active
filtering element
electronics unit
range
light
Prior art date
Application number
PCT/CH2000/000040
Other languages
English (en)
French (fr)
Other versions
WO2000054097A8 (de
WO2000054097A2 (de
Inventor
Leo Keller
Emil Ackermann
Original Assignee
Optrel Ag
Leo Keller
Emil Ackermann
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 Optrel Ag, Leo Keller, Emil Ackermann filed Critical Optrel Ag
Priority to EP00901013A priority Critical patent/EP1259852A2/de
Priority to KR1020017011384A priority patent/KR20020007319A/ko
Publication of WO2000054097A2 publication Critical patent/WO2000054097A2/de
Publication of WO2000054097A3 publication Critical patent/WO2000054097A3/de
Publication of WO2000054097A8 publication Critical patent/WO2000054097A8/de

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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using liquid crystals
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/906—Solar cell systems

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Ophthalmology & Optometry (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Die aktive optische Filtereinrichtung, die sich insbesondere als Blendschutzvorrichtung zum Einsatz in Schweissschutzmasken, -helmen oder -brillen eignet, ist in an sich bekannter Weise mit einem Lichtschutzfilter mit mindestens einem aktiven optischen Filterelement und mit einer Elektronik zur Steuerung des aktiven Filterelements sowie mit einem mit der Elektronik zusammenwirkenden Lichtsensor und einer Stromversorgung, insbesondere einer Solarzelle, für die Elektronik und das aktive Filterelement ausgestattet. Die Ansteuerschaltung für das aktive Filterelement ist derart ausgebildet, dass im Bereich Der Rahmenfrequenz (1/T) von 0.01 bis 1 Hz der Lastkondensator kurzzeitig vollständig entladen wird, wodurch die Leistungsaufnahme im Vergleich mit bekannten Schaltungen halbiert wird. Gleichzeitig wird die Betriebsspannung (U) in einen Bereich gelegt, der quantitativ festgelegt ist und in welchem der Streulichtanteil der verwendeten Flüssigkristallanzeige durch diese Festlegung minimal ist.
PCT/CH2000/000040 1999-03-11 2000-01-28 Aktive elektrooptische filtereinrichtung und verfahren zu ihrem betrieb WO2000054097A2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00901013A EP1259852A2 (de) 1999-03-11 2000-01-28 Aktive elektrooptische filtereinrichtung und verfahren zu ihrem betrieb
KR1020017011384A KR20020007319A (ko) 1999-03-11 2000-01-28 능동 전기 광학 필터링 장치 및 이것을 동작시키는 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH458/99 1999-03-11
CH00458/99A CH694384A5 (de) 1999-03-11 1999-03-11 Aktive elektrooptische Filtereinrichtung und Verfahren zu ihrem Betrieb.

Publications (3)

Publication Number Publication Date
WO2000054097A2 WO2000054097A2 (de) 2000-09-14
WO2000054097A3 true WO2000054097A3 (de) 2002-09-26
WO2000054097A8 WO2000054097A8 (de) 2003-01-03

Family

ID=4187481

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2000/000040 WO2000054097A2 (de) 1999-03-11 2000-01-28 Aktive elektrooptische filtereinrichtung und verfahren zu ihrem betrieb

Country Status (6)

Country Link
EP (1) EP1259852A2 (de)
KR (1) KR20020007319A (de)
CN (1) CN1559021A (de)
CH (1) CH694384A5 (de)
TW (1) TW527499B (de)
WO (1) WO2000054097A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100617036B1 (ko) * 2003-12-27 2006-08-30 엘지.필립스 엘시디 주식회사 액정표시장치의 제조방법
US8264265B2 (en) 2010-09-30 2012-09-11 Kimberly-Clark Worldwide, Inc. Automatic darkening filter (ADF) eye protection device with improved drive circuitry
EP2799046A1 (de) 2013-04-30 2014-11-05 Optrel Ag Vorrichtung und Verfahren zum Blendschutz

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961840A (en) * 1973-05-15 1976-06-08 Citizen Watch Co., Ltd. Driving circuit for liquid-crystal display
US4279474A (en) * 1980-03-25 1981-07-21 Belgorod Barry M Spectacle lens having continuously variable controlled density and fast response time
EP0550384A1 (de) * 1991-12-31 1993-07-07 Xelux Holding Ag Blendschutzvorrichtung
WO1997015254A1 (en) * 1995-10-26 1997-05-01 Hörnell International AB Liquid crystal shutter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961840A (en) * 1973-05-15 1976-06-08 Citizen Watch Co., Ltd. Driving circuit for liquid-crystal display
US4279474A (en) * 1980-03-25 1981-07-21 Belgorod Barry M Spectacle lens having continuously variable controlled density and fast response time
EP0550384A1 (de) * 1991-12-31 1993-07-07 Xelux Holding Ag Blendschutzvorrichtung
WO1997015254A1 (en) * 1995-10-26 1997-05-01 Hörnell International AB Liquid crystal shutter

Also Published As

Publication number Publication date
CN1559021A (zh) 2004-12-29
WO2000054097A8 (de) 2003-01-03
WO2000054097A2 (de) 2000-09-14
KR20020007319A (ko) 2002-01-26
TW527499B (en) 2003-04-11
EP1259852A2 (de) 2002-11-27
CH694384A5 (de) 2004-12-15

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