SU1446590A1 - Device for controlling spectacles for protection from blinding effect - Google Patents

Device for controlling spectacles for protection from blinding effect Download PDF

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Publication number
SU1446590A1
SU1446590A1 SU847773327A SU7773327A SU1446590A1 SU 1446590 A1 SU1446590 A1 SU 1446590A1 SU 847773327 A SU847773327 A SU 847773327A SU 7773327 A SU7773327 A SU 7773327A SU 1446590 A1 SU1446590 A1 SU 1446590A1
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SU
USSR - Soviet Union
Prior art keywords
liquid crystal
control
cell
phi
light
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SU847773327A
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Russian (ru)
Inventor
Рюдигер Соломон
Клаус Ниче
Герд Бернер
Original Assignee
Феб Карл Цейсс Йена (Инопредприятие)
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Publication of SU1446590A1 publication Critical patent/SU1446590A1/en

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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
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G02C7/101—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses having an electro-optical light valve
    • 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

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Health & Medical Sciences (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Vascular Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Mathematical Physics (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Liquid Crystal (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

An arrangement for driving liquid crystal cells in antiglare glasses, in which an adjustment to the varying light conditions is achieved on the basis of a self-acting transparency control. A plurality of first liquid crystal cells (7.1, 7.2, 7.3), form an eye shield and are electrically connected to light sensors (4.1, 4.2, 4.3) via driving units (5.1, 5.2, 5.3). A further liquid crystal cell (3) is disposed in front of the light sensors (4.1, 4.2, 4.3) and is arranged to act as a variable light filter. The cell (3) is connected via a driving unit (2) to an additional light sensor (1) which is arranged to control the cell (3) in response to the ambient luminance. <IMAGE>

Description

(Л(L

i4ib 4i Од СЛ i4ib 4i od SL

Изобретение относитс  к области управлени  пропусканием очками и может быть использовано дл  защиты от слеп щего действи  в дневное и ночное врем .The invention relates to the field of controlling the transmission of glasses and can be used to protect against the blinding effect during the day and at night.

Известно устройство дл  защиты глаз от слеп щего действи , например по за вке ФРГ № 2315308, кл.ЗОо 27/02, опублик, 1974, содержащее светочувствительньй элемент, который при изменении условий освещени  формирует сигнал .дл  управлени  жидкими кристаллами.A device for protecting the eyes from a blinding effect is known, for example, German Application No. 2315308, Claude 27/02, published 1974, containing a photosensitive element, which, when the lighting conditions change, forms a signal for controlling liquid crystals.

Цель изобретени  - обеспечение автоматического управлени  коэффи циентом пропускани  очков при суточной смене освещенности.The purpose of the invention is to provide automatic control of the transmission coefficient of points during a daily change of illumination.

На фиг,1 изображена схема управлени  очками дл  защиты от слеп щего действи } на фиг.2 - зависимость сте пени пропускани  2 от  ркости освещени  окружающей среды Ф фиг.З - отношение  ркости освещени  окружающей среды ц к  ркости света, воспринимаемой как слепимость , в зависимости от времени; на фиг.,4 - зависимость степени пропускани  от  ркости освещени  в ограниченном диапазоне угла зрени  фд.FIG. 1 shows a control scheme for protection against the blinding effect} of FIG. 2 — the dependence of the transmission degree 2 on the ambient illumination intensity Φ FIG. 3 — the ratio of the ambient illumination intensity to the lightness perceived as glare in time dependent; Fig. 4 shows the dependence of the transmission degree on the illumination brightness in a limited range of the viewing angle fd.

Светочувствительньй элемент 1 дл  измерени   ркости освещени  окружаю- щей среды через управл кщий узел 2 электрически св зан с  чейкой 3 жид- ких кристаллов, действующей как.переменный (регулируемьш) фильтр. Ячейка 3 жидких кристаллов установлена в качестве фильтра перед светочувствительными элементами 4..3 которые в свою очередь св заны цепью сигнализации через св занные с ними управл ющими узлами 5.1 - 5 .,3, образующими поле зрени  глаза 6, с соответствующими участками  чеек 7,1-7оЗ жидких кристаллов. Узел 8 питани  св зан с управл  с(цими узлами 2 и 5„1-5сЗсThe photosensitive element 1 for measuring the luminance of ambient light through the control unit 2 is electrically connected to the cell of 3 liquid crystals acting as a variable (adjustable) filter. Cell 3 of liquid crystals is installed as a filter in front of the photosensitive elements 4..3 which, in turn, are connected by an alarm circuit through associated control nodes 5.1-5., 3, which form the eye field of eye 6, with corresponding portions of cells 7, 1-7оЗ liquid crystals. The power supply node 8 is connected to the control unit (tsimi nodes 2 and 5 "1-5s3s

Светочувствительные элементы 4.1- 4.3 и св занные с ними управл кщие узлы .3 так согласованы с  чейками 7с,1-7„3 жидких кристаллов, что при превышении заданной величины светового порога через соответствующие управл гацие узлы вьщаетс  сигнал, который вызывает изменение степени пропускани  €, соответствующих участков  чеек 7.1-7.3 жидких кристаллов. Свыше пороговой величины световогоThe photosensitive elements 4.1–4.3 and the associated control nodes .3 are so coordinated with the cells 7c, 1-7 ± 3 liquid crystals, that when a predetermined value of the light threshold is exceeded, a signal is generated through the corresponding control, which causes a change in the degree of transmission corresponding to sections 7.1-7.3 of liquid crystals. Above the threshold of the light

воспри ти  f )ззмен етс  в зависимости от  ркости освещени  слеп щего излучени .f) is measured depending on the intensity of the blinding radiation.

Световой поток, поступающий на светочувствительные элементы 4.1-4.3 регулируетс  с помощью светочувствительного элемента 1, управл ющего узла 2 и  чейки 3 жидких кристаллов в зависимости от  ркости освещени  окружающей среды. На фиг.2 схематично представлена зависимость степени пропускани   чейки 3 жидких кристаллов , действующей в качестве фильт ра, и  ркости освещени  окружающей среды Рц . Как известно, воспринимаема  слеп щей  ркость света Р зависит от и . В примере зависимости от времени, представленном на фиг.З,  ркость света в ограниченном диапазоне угла зрени  Рц при определенной Ф( только тогда воспринимаетс  слеп щей, когда она превьшает значение е, . Если  ркость света подразделить в диапазоны Рд РвДл  Ф и Фц дл  Фц то наблюдаетс  зависимость между Фд и 7 (фиг,4). То, что светочувствительные элементы 4.1-4.3, измен клцие степень пропускани  S t оптически св заны с  чейкой 3 жидких кристаллов, действующей в качестве фильтра, и степень пропускани  сГ измер етс  в зависимости от Ф{ , обуславливает изменение y , если фд 9g дл  Ф. , в зависимости от Рд иФ,.The luminous flux supplied to the photosensitive elements 4.1-4.3 is controlled by the photosensitive element 1, the control unit 2 and the cell 3 of liquid crystals, depending on the brightness of the surrounding environment. Fig. 2 shows a schematic representation of the degree of transmission of a cell of 3 liquid crystals, acting as a filter, and the brightness of the ambient radiation Rc. As is known, the perceived blinding brightness of light P depends on and. In the example, depending on the time shown in Fig. 3, the brightness of light in a limited range of the viewing angle Rc at a certain Φ (only then is perceived to be blind when it exceeds the value of e,. If the brightness of the light is divided into the ranges Rd RvD F and Fz for Φz A relationship is observed between Fd and 7. (Fig. 4). The fact that the photosensitive elements 4.1-4.3 change the transmission degree S t is optically coupled to a cell of 3 liquid crystals acting as a filter, and the degree of transmission cH is measured according to from f {, conditioned The change is y, if fd 9g dl f., depending on Rd iff ,.

Таким образом происходит автоматическа  адаптаци  схемы управлени  к соответствующим услови м освещени  и необходима  дл  этого зависимость между Ф и Ф„ осуществл етс  за счет оптической св зи.In this way, the control circuit is automatically adapted to the corresponding lighting conditions and the relationship between F and Fn is necessary for this, due to the optical coupling.

Claims (5)

Формула изобретени Invention Formula 1 о Устройство управлени  очками дл  запщты от слеп щего действи , включанщее  чейки жидких кристаллов, электрически св занные через управ- л юцие узлы со светочувствительными элементами и узлом питани , отличающеес  тем, что, с целью обеспечени  автоматического управлени  коэффициентом пропускани  при суточной смене освещенности, оно дополнительно снабжено переменным фильтром, установленным перед светочувствительными элементами, выполненным в виде  чейки жидких крис 1 o A goggles control device for blinding, including liquid crystal cells, electrically connected through control units with light-sensitive elements and a power supply unit, characterized in that, in order to ensure automatic control of the transmittance during a daily change in illumination, it is additionally equipped with a variable filter installed in front of the photosensitive elements, made in the form of a cell of liquid crystals который через дополнительныwhich through extra таллов,tal, управл ющий узел св зан с дополнительно введенным светочувстрительны элементом.the control unit is associated with the additionally introduced photosensitive element. 2 о Устройство по п.1, отличающеес  тем, что управл ющи узлы выполнены с возможностью регулировани  порога срабатывани .2 o The device according to claim 1, characterized in that the control nodes are adapted to adjust the threshold. 3, Устройство поп,1, отличающеес  тем, что крутизна характеристики коэффициента пропускани   чеек жидких кристаллов меньше , чем у  чеек жидких крис-наллов фильтра.3, Device pop, 1, characterized in that the slope of the transmittance characteristic of the liquid crystal cells is less than that of the liquid crystal filter cells. 4. Устройство ПОП.1, отли4. Device POP.1, ex чающеес  тем, что чувствительность светочувствительных элементов ниже, чем у дополнительно введенного.This is because the sensitivity of the photosensitive elements is lower than that of the additionally introduced. 5. Устройство по П.1, отличающеес  тем, что коэффициенты передачи узлов управлени  ниже, чем у дополнительного.5. A device according to claim 1, characterized in that the transmission coefficients of the control nodes are lower than that of the additional ones. Признано изобретением по результатам экспертизы, осуществленной Ведомством по изобретательству Германской Демократической Республики.It is recognized as an invention according to the results of the examination carried out by the Office for the Invention of the German Democratic Republic. ФиPhi Фиг. г - Ф,FIG. r - F, Фи Phi (Рв дл Фи(PB dl fi Фи Phi // ФАF 4four Фиг.FIG. ЛL 77 Фиг.ЦFig.C
SU847773327A 1983-03-29 1984-02-20 Device for controlling spectacles for protection from blinding effect SU1446590A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD24935683A DD228953A3 (en) 1983-03-29 1983-03-29 ARRANGEMENT FOR OPERATING BLADE GOGGLES

Publications (1)

Publication Number Publication Date
SU1446590A1 true SU1446590A1 (en) 1988-12-23

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ID=5546049

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SU847773327A SU1446590A1 (en) 1983-03-29 1984-02-20 Device for controlling spectacles for protection from blinding effect

Country Status (5)

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CS (1) CS272258B1 (en)
DD (1) DD228953A3 (en)
DE (1) DE3404748A1 (en)
GB (1) GB2137373A (en)
SU (1) SU1446590A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4136588C2 (en) * 1991-11-07 1993-11-18 Deutsche Aerospace Device for protection against excessive optical power and energy densities
US5670935A (en) 1993-02-26 1997-09-23 Donnelly Corporation Rearview vision system for vehicle including panoramic view
US6822563B2 (en) 1997-09-22 2004-11-23 Donnelly Corporation Vehicle imaging system with accessory control
US5877897A (en) 1993-02-26 1999-03-02 Donnelly Corporation Automatic rearview mirror, vehicle lighting control and vehicle interior monitoring system using a photosensor array
US5550677A (en) * 1993-02-26 1996-08-27 Donnelly Corporation Automatic rearview mirror system using a photosensor array
DE4330817C1 (en) * 1993-09-13 1994-12-01 Optrel Ag Method of controlling an antiglare device, and antiglare device for performing the method
US5671035A (en) * 1995-06-07 1997-09-23 Barnes; Elwood E. Light intensity reduction apparatus and method
US7655894B2 (en) 1996-03-25 2010-02-02 Donnelly Corporation Vehicular image sensing system
DE19714434A1 (en) * 1997-04-08 1998-10-15 Armin Schaeuble Selective electronic photo-protective spectacles
GB2341965A (en) * 1998-09-24 2000-03-29 Secr Defence Pattern recognition
US7585068B2 (en) 2004-12-03 2009-09-08 Dynamic Eye, Inc. Method and apparatus for calibrating glare-shielding glasses
US7720580B2 (en) 2004-12-23 2010-05-18 Donnelly Corporation Object detection system for vehicle
US7972045B2 (en) 2006-08-11 2011-07-05 Donnelly Corporation Automatic headlamp control system
US8017898B2 (en) 2007-08-17 2011-09-13 Magna Electronics Inc. Vehicular imaging system in an automatic headlamp control system
US20100020170A1 (en) 2008-07-24 2010-01-28 Higgins-Luthman Michael J Vehicle Imaging System
WO2015169166A1 (en) * 2014-05-04 2015-11-12 丹阳博来腾光电科技有限公司 Anti-glare lens, device, spectacles, and method against vehicle lamplight

Also Published As

Publication number Publication date
CS272258B1 (en) 1991-01-15
DE3404748A1 (en) 1984-10-04
GB8407797D0 (en) 1984-05-02
DD228953A3 (en) 1985-10-23
GB2137373A (en) 1984-10-03

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