FR2929420B1 - Dispositif d'obturation electro-optique - Google Patents

Dispositif d'obturation electro-optique

Info

Publication number
FR2929420B1
FR2929420B1 FR0852081A FR0852081A FR2929420B1 FR 2929420 B1 FR2929420 B1 FR 2929420B1 FR 0852081 A FR0852081 A FR 0852081A FR 0852081 A FR0852081 A FR 0852081A FR 2929420 B1 FR2929420 B1 FR 2929420B1
Authority
FR
France
Prior art keywords
electro
shut
optical
optical shut
Prior art date
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.)
Expired - Fee Related
Application number
FR0852081A
Other languages
English (en)
Other versions
FR2929420A1 (fr
Inventor
Bougrenet De La Tocnaye Jean Louis De
Emmanuel Daniel
Bougrenet De La Tocnaye Thibault De
Bertrand Caillaud
Pascal Gautier
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.)
GROUPE ECOLES TELECOMM
Original Assignee
GROUPE ECOLES TELECOMM
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 GROUPE ECOLES TELECOMM filed Critical GROUPE ECOLES TELECOMM
Priority to FR0852081A priority Critical patent/FR2929420B1/fr
Priority to PCT/EP2009/053834 priority patent/WO2009121894A1/fr
Publication of FR2929420A1 publication Critical patent/FR2929420A1/fr
Application granted granted Critical
Publication of FR2929420B1 publication Critical patent/FR2929420B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G02F1/133—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
    • 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

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)
FR0852081A 2008-03-31 2008-03-31 Dispositif d'obturation electro-optique Expired - Fee Related FR2929420B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0852081A FR2929420B1 (fr) 2008-03-31 2008-03-31 Dispositif d'obturation electro-optique
PCT/EP2009/053834 WO2009121894A1 (fr) 2008-03-31 2009-03-31 Dispositif d'obturation electro-optique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0852081A FR2929420B1 (fr) 2008-03-31 2008-03-31 Dispositif d'obturation electro-optique

Publications (2)

Publication Number Publication Date
FR2929420A1 FR2929420A1 (fr) 2009-10-02
FR2929420B1 true FR2929420B1 (fr) 2010-08-20

Family

ID=39789358

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0852081A Expired - Fee Related FR2929420B1 (fr) 2008-03-31 2008-03-31 Dispositif d'obturation electro-optique

Country Status (2)

Country Link
FR (1) FR2929420B1 (fr)
WO (1) WO2009121894A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107966834B (zh) * 2016-10-20 2020-08-28 泰克曼(南京)电子有限公司 可实现高遮光号的自动变光过滤器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3276596D1 (en) * 1982-04-14 1987-07-23 Eggenschwiler Andre M Protective light filter, in particular for protective shields or welding glasses
SE502840C2 (sv) * 1993-05-10 1996-01-29 Optrel Ag Siktskyddsanordning
FR2886418B1 (fr) * 2005-05-25 2007-08-17 Get Enst Bretagne Groupe Des E Utilisation d'un materiau a base de cristal liquide afin de fabriquer un dispositif d'obturation electro-optique, dispositif et casque stroboscopique conformes a cette utilisation
FR2901032B1 (fr) * 2006-05-10 2008-09-05 Get Enst Bretagne Groupe Des E Obturateur rapide a double regime d'obturation.

Also Published As

Publication number Publication date
WO2009121894A1 (fr) 2009-10-08
FR2929420A1 (fr) 2009-10-02

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Legal Events

Date Code Title Description
PLFP Fee payment

Year of fee payment: 8

ST Notification of lapse

Effective date: 20161130