DE19714434A1 - Selective electronic photo-protective spectacles - Google Patents
Selective electronic photo-protective spectaclesInfo
- Publication number
- DE19714434A1 DE19714434A1 DE1997114434 DE19714434A DE19714434A1 DE 19714434 A1 DE19714434 A1 DE 19714434A1 DE 1997114434 DE1997114434 DE 1997114434 DE 19714434 A DE19714434 A DE 19714434A DE 19714434 A1 DE19714434 A1 DE 19714434A1
- Authority
- DE
- Germany
- Prior art keywords
- glasses
- light
- lcd
- segments
- selective
- 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.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/18—Face protection devices
- A42B3/22—Visors
- A42B3/226—Visors with sunscreens, e.g. tinted or dual visor
-
- 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
- A61F9/02—Goggles
- A61F9/022—Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs
- A61F9/023—Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs with variable transmission, e.g. photochromic
-
- 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
Abstract
Description
Die Erfindung betrifft eine Vorrichtung entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of claim 1.
Herkömmliche Lichtschutzbrillen besitzen eine fest vorgegebene Tönung, was zur Folge hat, daß sie für viele Situationen zu schwach oder zu stark getönt sind - je nach der momentanen Helligkeit der Umgebung.Conventional light protection glasses have a fixed tint, which results has that they are too weak or too tinted for many situations - depending on the current brightness of the environment.
Um diesen Mangel zu beheben wurden phototrope Gläser auf Basis von Silberhalogenidkristallen entwickelt, welche in unbelichtetem Zustand farblos sind (10% Absorption) und sich unter Einwirkung der UV-Strahlung des Sonnenlichts schwärzen (bis 60% Absorption). Weil es jedoch einige Zeit dauert, bis diese Schwärzung eintriff (ca. 30 Sekunden) eignen sich diese phototropen Gläser nicht für Anwendung in Situationen, wo sich die Helligkeit der Umgebung sehr schnell ändert (z. B. beim Autofahren durchs Tunnel, kurzer Blick in die Sonne, etc.).In order to remedy this deficiency, phototropic glasses based on Silver halide crystals developed, which are colorless in the unexposed state (10% Absorption) and blacken under the influence of UV radiation from sunlight (up to 60% absorption). However, because it takes some time for this blackening to occur (approx. 30 Seconds) these phototropic glasses are not suitable for use in situations where the brightness of the surroundings changes very quickly (e.g. when driving through a tunnel, shorter Look at the sun, etc.).
Dieser Nachteil wurde mit der Entwicklung von von Sonnenbrillen auf Basis elektronisch gesteuerter LCD-Gläser behoben, die sich gegenüber den photochromen Sonnenbrillen durch eine sehr viel schnellere Ansprechzeit auszeichnen (Sekundenbruchteile anstatt 30 sec.), wodurch ihr Einsatz gerade in diesen Anwendungsbereichen möglich und sinnvoll wird, wo sich die Umgebungshelligkeit sehr schnell ändern kann.This disadvantage has been with the development of electronic sunglasses Controlled LCD glasses, which differ from the photochromic sunglasses have a much faster response time (fractions of a second instead of 30 seconds), which makes their use possible and sensible, especially in these application areas, where the ambient brightness can change very quickly.
Ein weiterer Vorteil der LCD-Sonnenbrillen gegenüber den phototropen Sonnenbrillen ist die Möglichkeit, sich ihre Tönung individuell nach Belieben einstellen zu können.Another advantage of LCD sunglasses over phototropic sunglasses is that Possibility to adjust your tint individually at will.
Trotz dieser erfreulichen Entwicklungen bleibt jedoch ein prinzipieller Nachteil, welcher
allen diesen bisher entworfenen Lichtschutzbrillen anhaftet:
Sie verdunkeln das gesamte Blickfeld, unabhangig davon, ob die Blendung von einer
allgemein erhöhten Leuchtdichte, oder nur von einer einzelnen Lichtquelle verursacht
wird.Despite these pleasing developments, however, there remains a fundamental disadvantage that is inherent in all of these previously designed light protection glasses:
They darken the entire field of view, regardless of whether the glare is caused by a generally increased luminance or only by a single light source.
In der Regel ist jedoch gerade letzteres der Fall: Es sind einzelne Lichtquellen, wie zum Beispiel direkte Blendung durch die Sonne oder nachts durch Autoscheinwerfer entgegenkommender Fahrzeuge, die Blendung verursachen. In allen diesen Fällen wird durch die bisher entwickelten Lichtschutzbrillen zwar eine Blendung verhindert (und damit Netzhautschädigung oder vorübergehende akkomodationsbedingte Herabsetzung der Sehfähigkeit) - es wird aber in gleichem Ausmaß auch die Lichtstarke des gesamten übrigen Blickfeldes reduziert - und damit das Licht reduziert, welches für gutes Erkennen der übrigen Objekte notwendig ist. As a rule, however, the latter is the case: They are individual light sources, such as Example direct glare from the sun or at night from car headlights oncoming vehicles that cause glare. In all of these cases, through the previously developed light protection glasses prevent glare (and thus Retinal damage or temporary reduction in accommodation due to accommodation Eyesight) - but it will also be the same light intensity of the rest Reduced field of vision - and thus reduces the light, which is necessary for good recognition of the rest Objects is necessary.
Wenn die Blendung nur von einzelnen Lichtquellen verursacht wird und nicht von einer allgemein erhöhten Lichtstärke, ist es nicht sinnvoll, daß gleich die Brille als Ganzes verdunkelt wird. Eine wesentliche Verbesserung der Sehfähigkeit bei direkter Blendung kann nur durch selektive Verdunkelung derjenigen Bereiche auf den Brillengläsern erreicht werden, die sich genau zwischen dem Auge und der Lichtquelle befinden - nicht aber durch die undifferenzierte Verdunkelung der gesamten Brille.If the glare is caused only by individual light sources and not by one Generally increased light intensity, it does not make sense that the glasses as a whole is darkened. A significant improvement in vision with direct glare can only achieved by selectively darkening those areas on the lenses that are exactly between the eye and the light source - but not through the undifferentiated darkening of the entire glasses.
Die Notwendigkeit einer Selektiven Tönung wurde schon in Patenten und Gebrauchsmustern der 70er und 80er Jahre gesehen. Jedoch basierten die damals vorgeschlagenen Erfindungen auf einer nicht sehr praktikablen statischen Lösung: Es wurden die Bereiche auf den Brillengläsern getönt, in denen die Blendung erwartet wurde.The need for selective tinting has already been mentioned in patents and utility models seen in the 70s and 80s. However, the inventions proposed at the time were based on a not very practicable static solution: The areas on the Tinted lenses in which glare was expected.
So wurden z. B. Brillengläser entworfen, deren obere Hälfte getönt, und deren untere Hälfte klar war (Funktion ähnlich dem Blendschutz beim Auto), Gläser bei denen nur ein kleiner Zentraler Bereich ungetönt war, oder eine spezielle "Autofährerbrille" gegen die nächtliche Blendung durch entgegenkommende Autoscheinwerfer. Diese mehr oder weniger praktikablen Konstruktionen hatten den Nachteil, daß sie das Blickfeld in bestimmten Bereichen dauerhaft einschränkten, wodurch sie zumindest außerhalb ihres engen Anwendungsbereichs unpraktikabel waren - oft sogar innerhalb ihres Anwendungsbereiches selbst (verkehrsgefährdende "Autofahrerbrillen".So z. B. glasses designed, the upper half tinted, and the lower Half was clear (function similar to glare protection in the car), glasses in which only one small central area was not tinted, or special "car driver glasses" against the night glare from oncoming car headlights. This more or less practical constructions had the disadvantage that they limited the field of vision Areas permanently restricted, making them at least outside of their narrow Scope were impractical - often even within their scope itself (traffic-jeopardizing "driver glasses".
Da man im Alltag normalerweise nicht exakt voraussagen kann aus welchen Richtungen Blendung zu erwarten ist, und man für die vielen wechselnden Situationen nicht jeweils die "passende" Brille dabei haben kann, ist es kein Wunder, daß sich keine dieser Lösungen etablieren konnte.Since you cannot normally predict exactly from which directions in everyday life Glare is to be expected, and not for each of the many changing situations "Matching" glasses can be there, it is no wonder that none of these solutions could establish.
Aufgabe der Erfindung ist es, eine Vorrichtung zu schaffen, die vor Blendung schützt, indem sie sich wie die LCD-Sonnenbrillen dynamisch an wechselnde Lichtverhältnisse anpassen kann, - gleichzeitig jedoch in der Lage ist, zu erkennen, ob die Blendung von einer allgemein erhöhten Leuchtdichte herrührt, oder ob sie nur von einzelnen hellen Lichtquellen verursacht wird. Im letzteren Fall soll nicht unspezifisch die gesamte Brille verdunkelt werden, sondern selektiv nur die Bereiche, die sich exakt zwischen dem Auge und den Lichtquellen befinden, während die anderen Bereiche durchsichtig-klar bleiben sollen.The object of the invention is to provide a device that protects against glare by like the LCD sunglasses, they adapt dynamically to changing lighting conditions can - at the same time, however, is able to recognize whether the glare from a general increased luminance, or whether it is caused only by individual bright light sources becomes. In the latter case, the entire glasses should not be darkened unspecifically, but selectively only the areas that are exactly between the eye and the light sources, while the other areas should remain transparent and clear.
Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst. (Es werden nur die Segmente verdunkelt, die sich zwischen Auge und Lichtquelle befinden. Zu diesem Zweck ist jedem Brillensegment ein eigenes Fotoelement zugeordnet, welches nur auf das Licht aus einer spezifischen Richtung anspricht).This object is achieved by a device with the features of claim 1. (Only the segments that are between the eye and the light source are darkened. For this purpose, each eyeglass segment is assigned its own photo element, which only responds to light from a specific direction).
Diese Erfindung vereinigt die Vorteile der dynamischen LCD Lichtschutzbrillen (individuell einstellbare Tönung, automatische Konstanthaltung der einfallenden Lichtmenge, sehr schnelle Ansprechzeit) mit der Fähigkeit zur selektiven Verdunkelung einzelner Segmente.This invention combines the advantages of dynamic LCD light protection glasses (individually adjustable tint, automatic constant maintenance of the amount of light, very fast response time) with the ability to selectively darken individual segments.
Sie kann dabei als Ganzes dunkler werden (bei allgemein erhöhter Helligkeit) und/oder sektorenspezifisch (bei direkter Blendung durch Lichtquellen). It can darken as a whole (with generally increased brightness) and / or sector-specific (with direct glare from light sources).
Die Erfindung zeichnet sich durch viele Anwendungsmöglichkeiten aus. Einsatzgebiete sind
besonders alle Situationen, wo mit direkter Blendung und/oder schnell wechselnden
Lichtverhältnissen zu rechnen ist, und wo es wesentlich ist, das Umfeld der Lichtquelle
trotzdem noch in unveränderter Helligkeit und Deutlichkeit wahrzunehmen:
The invention is characterized by many possible uses. Areas of application are particularly all situations where direct glare and / or rapidly changing lighting conditions are to be expected, and where it is essential to still perceive the environment of the light source in unchanged brightness and clarity:
- - bei bestimmten Sportarten in der Sonne (Volleyball, Baseball, Federball,)- for certain sports in the sun (volleyball, baseball, badminton,)
- - im Alltag (vor allem bei tiefstehender Sonne)- in everyday life (especially when the sun is low)
- - beim Autofahren (Tags: tiefstehende Sonne; Nachts: Blendung durch Scheinwerfer)- when driving (tags: low sun; at night: glare from headlights)
- - Vogelbeobachtungen und Himmelsbeobachtungen gegen die Sonne- Bird watching and sky watching against the sun
- - Flugzeugpiloten.- Airplane pilots.
Die selektive Lichtschutzbrille eignet sich auch für Personen, die im Kontakt mit Menschen ungern eine Sonnenbrille tragen. Die Brille kann so eingestellt werden, daß sie völlig klar bleibt, und beim Auftreten von hellen Lichtquellen nur in denjenigen Segmenten dunkler wird, die sich direkt zwischen dem Auge und der Lichtquelle befinden.The selective light protection glasses are also suitable for people who come into contact with people reluctant to wear sunglasses. The glasses can be adjusted so that they are completely clear remains, and when bright light sources occur only darker in those segments that are directly between the eye and the light source.
Dadurch, daß jedes Brillensegment separat über jeweils einen eigenen Lichtsensor gesteuert wird, können mehrere unabhängige Lichtquellen gleichzeitig abgeschirmt werden.Because each eyeglass segment is controlled separately by its own light sensor several independent light sources can be shielded at the same time.
Ein völlig neues Anwendungsfeld wurde sich ergeben, wenn man die Erfindung nicht nur zum Schutz des Auges, sondern zum selektiven Lichtschutz in Foto- oder Filmapparaten einsetzen würde. Würde man Fotoapparate oder Videokameras so konstruieren, daß sich eine selektive LCD direkt vor dem Film bzw. dem CCD-Chip befindet, wurde es möglich, gegen Sonne und Gegenlicht zu fotografieren bzw. zu filmen, und dabei trotzdem sowohl die Details der hellen, wie auch die Details der dunkleren Umgebung zu erhalten, ohne einen dieser Bereiche - wie es bisher der Fall ist - zu überbelichten oder zu unterbelichten, und ohne Geräteschäden zu verursachen. A completely new field of application would emerge if one not only considered the invention to protect the eye, but for selective light protection in cameras or film cameras would start. Would you construct cameras or video cameras so that one selective LCD is located directly in front of the film or the CCD chip, it became possible against Photographing and filming the sun and back light, and still including the details the light as well as the details of the darker surroundings without getting any of these Areas - as has been the case so far - to overexpose or underexpose, and without Cause damage to the device.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben.Embodiments of the invention are shown in the drawings and are in following described in more detail.
Zur Verdeutlichung des Unterschieds der vorliegenden Erfindung zu den bisher entwickelten LCD-Lichtschutzbrillen, ist in Fig. 0 eine typische LCD-Lichtschutzbrille dargestellt, wie sie dem momentanen Stand der Technik entspricht.To illustrate the difference between the present invention and the previously developed LCD light protection glasses, FIG. 0 shows a typical LCD light protection glasses as it corresponds to the current state of the art.
Die folgenden Abbildungen zeigen:The following pictures show:
Fig. 0 herkömmliche LCD-Lichtschutzbrille
Fig. 0 conventional LCD light protection glasses
- a) perspektivische Ansichta) perspective view
- b) Schaltskizze bisheriger LCD-Lichtschutzbrillen (stark vereinfacht !)b) Circuit diagram of previous LCD light protection glasses (greatly simplified!)
Fig. 1 Selektive Lichtschutzbrille (einfache Ausführung)
Fig. 1 Selective light protection glasses (simple version)
- a) perspektivische Ansichta) perspective view
- b) Schaltskizze (stark vereinfacht!)b) Circuit diagram (greatly simplified!)
- c) Funktionsprinzipc) Principle of operation
Fig. 2 Selektive Lichtschutzbrille (komplexere Ausführung)
Fig. 2 Selective light protection glasses (more complex version)
- a) perspektivische Ansicht einer komplexeren/weiterentwickelten dynamisch selektiven Lichtschutzbrillea) Perspective view of a more complex / evolved dynamic selective light goggles
- b) vergrößerte perspektivische Ansicht des Lichtsensorsb) enlarged perspective view of the light sensor
- c) Funktionsprinzip dieser Sensoren-Anordnung.c) Functional principle of this sensor arrangement.
Bei den bisherigen dynamischen LCD-Lichtschutzbrillen wird die Lichtdurchlässigkeit der Brillengläser global durch die auf einen einzelnen Lichtsensor fallende Lichtmenge reguliert. (Fig. 0a und b).In the previous dynamic LCD light protection glasses, the light transmission of the glasses is regulated globally by the amount of light falling on a single light sensor. ( Fig. 0a and b).
Bei der selektiven dynamischen Lichtschutzbrille (einfache Ausführung in Fig. 1a, b, c) sind die Brillengläser dagegen in mehrere Segmente unterteilt, die jeweils über eigene Fotoelemente separat angesteuert werden.In contrast, in the case of selective dynamic light protection glasses (simple design in FIGS. 1a, b, c), the glasses glasses are divided into several segments, each of which is controlled separately by its own photo elements.
Diese Fotoelemente sind so ausgerichtet, daß sie nur - oder zumindest hauptsächlich - auf Licht ansprechen, welches aus einer für das Element spezifischen Richtung kommt. Dabei soll das Fotoelement, welches den oberen Brillensegmenten zugeordnet ist, nur auf Licht ansprechen, welches von oben eintrifft, während das entsprechende Fotoelement der unteren Brillensegmente nur auf Licht ansprechen soll, das von unten eintritt. These photo elements are oriented so that they only - or at least mainly - on Address light coming from a direction specific to the element. Here the photo element, which is assigned to the upper segments of the glasses, should only be on light address which arrives from above, while the corresponding photo element of the lower Glasses segments should only respond to light entering from below.
Diese Richtungsspezifität kann durch besondere Bauart der Fotoelemente, durch Abschirmungen an den Elementen, oder durch Linsen (wie z. B. in Fig. 2b, c) erreicht werden.This directional specificity can be achieved by a special design of the photo elements, by shielding on the elements, or by lenses (such as in FIG. 2b, c).
Im einfachsten Fall kann Richtungsspezifität durch entsprechende Ausrichtung normaler Fotoelemente erreicht werden (wie in Fig. 1c dargestellt), jedoch wurde dann - in steilem Winkel - auch das Fotoelement 2 vom Lichtstrom der Lichtquelle gestreift, was eine leichte Tönung auch des entsprechenden Brillensegmentes 2 zur Folge hätte.In the simplest case, directional specificity can be achieved by appropriate alignment of normal photo elements (as shown in Fig. 1c), but then - at a steep angle - the photo element 2 was also streaked by the luminous flux of the light source, which also results in a slight tinting of the corresponding glasses segment 2 would have.
Fig. 2a) zeigt eine Version der selektiven Lichtschutzbrille, die in noch mehr Sektoren unterteilt ist, und die über einen anderen Sensor verfügt. Durch diese Konstruktion kommt die Brille dem Ideal näher, nur ganz spezifisch die blendenden Lichtquellen abzuschirmen, unter Beibehaltung der Lichtdurchlässigkeit der restlichen Brillensegmente. Fig. 2a) shows a version of the selective light protection glasses, which is divided into even more sectors, and which has a different sensor. This construction brings the glasses closer to the ideal of only specifically shielding the dazzling light sources while maintaining the translucency of the remaining glasses segments.
Zur Steuerung der 16 einzelnen Sektoren beider Brillengläser wurde hier jedoch eine andere
Anordnung der Fotoelemente gewählt als im vorherigen Beispiel. Diese Anordnung ist in
Fig. 2b) vergrößert und perspektivisch abgebildet:
Es handelt sich dabei um eine quadratische Anordnung von 16 Fotoelementen, die von
lichtundurchlässigen Seitenwänden umgeben sind (diese sind aus darstellungstechnischen
Gründen hier durchsichtig abgebildet).To control the 16 individual sectors of both lenses, however, a different arrangement of the photo elements was chosen than in the previous example. This arrangement is enlarged in FIG. 2b) and shown in perspective:
It is a square arrangement of 16 photo elements, which are surrounded by opaque side walls (these are shown here for reasons of illustration).
Das Licht gelangt über eine Sammellinse (ähnlich wie bei einem Fotoapparat) zu den Fotoelementen. Die Linse sorgt dafür, daß auf jedes einzelne Fotoelement nur das Licht gelangt, welches aus einem ganz bestimmten Einfallswinkel eintrifft.The light reaches the through a converging lens (similar to a camera) Photo elements. The lens ensures that on each individual photo element only the light arrives, which arrives from a very specific angle of incidence.
Jedem dieser Fotoelemente ist wieder ein spezifisches Segment in beiden Brillengläser zugeordnet. Fotoelemente und das ihnen jeweils zugeordneten Brillensegment sind durch gleiche Zahlen gekennzeichnet.Each of these photo elements is again a specific segment in both glasses assigned. Photo elements and the glasses segment assigned to them are through same numbers marked.
Die Numerierung der Fotoelementen ist spiegelbildlich zu den Brillensegmenten: Licht, welches z. B. von oben rechts durch die Sensorlinse auf das untere linke Fotoelement 1 auftrifft, soll das entsprechende Brillensegment 1 in der oberen rechten Ecke beider Brillengläser verdunkeln. Dieses ist das Segment, welches sich dann genau zwischen Auge und Lichtquelle befindet.The numbering of the photo elements is a mirror image of the eyeglass segments: light, which z. B. from above strikes the right by the sensor lens on the lower left picture element 1, the corresponding glasses segment 1 is to darken in the upper right corner of both lenses. This is the segment that is exactly between the eye and the light source.
Fig. 2c) zeigt das Funktionsprinzip vereinfacht in der 2-dimensionalen Seitenansicht: Das Licht der Lichtquelle trifft von schräg oben z. B. auf das Fotoelement Nr. 2 und verursacht damit die Eintönung des entsprechenden, ihm zugeordneten Brillensegments. Da sich dieses Segment genau zwischen Auge und Lichtquelle befindet, wird selektiv die Lichtquelle abgedunkelt, während alle anderen Brillensegmente durchsichtig-klar bleiben. Fig. 2c) shows the functional principle simplified in the 2-dimensional side view: The light of the light source hits obliquely from above z. B. on the photo element No. 2 and thus causes the tinting of the corresponding glasses segment assigned to it. Since this segment is located exactly between the eye and the light source, the light source is selectively darkened, while all other eyeglass segments remain transparent and clear.
Die Funktion der dargestellten Konstruktionen beruht darauf, daß die Lichtstrahlen annähernd parallel eintreffen, der Lichteinfallswinkel auf den Sensor also auch in etwa der gleiche ist wie der auf das entsprechende Brillensegment.The function of the constructions shown is based on the fact that the light rays are approximately Arrive in parallel, so the light incidence angle on the sensor is roughly the same like that on the corresponding glasses segment.
Für Lichtquellen jedoch, die sich nur wenige cm vor den Augen befinden, wurde der Einfallswinkel in den Lichtsensor nicht mehr mit dem Einfallswinkel in die Brille und Auge übereinstimmen: Das aktivierte Segment wurde in diesem Fall die Lichtquelle nicht mehr perfekt abschirmen.However, for light sources that are only a few cm in front of the eyes, the Angle of incidence in the light sensor no longer with the angle of incidence in the glasses and eye match: In this case, the activated segment was no longer the light source shield perfectly.
Da die Lichtstrahlen von etwas weiter entfernten Lichtquellen (Sonne, Autos) jedoch annähernd parallel auf Sensor und Auge einfallen, ist das Anbringen des Lichtsensors zwischen den Brillengläsern unproblematisch. However, since the light rays from light sources (sun, cars) are a little further away Attaching the light sensor is approximately parallel to the sensor and eye between the glasses unproblematic.
In einer nicht dargestellten Ausführung sind die Sektoren dieser Lichtschutzbrille in diverse, verschieden gestaltete Segmente unterteilt - je nach Einsatzzweck, wirtschaftlichen und ästhetischen Überlegungen - mit verschiedener Anzahl und Form und Anordnung der Sektoren (z. B. feine Sektorenunterteilung in der Mitte, grobe Sektoren an den peripheren Bereichen etc.).In an embodiment not shown, the sectors of these light protection glasses are divided into various differently designed segments - depending on the application, economic and aesthetic considerations - with different number and shape and arrangement of Sectors (e.g. fine sector subdivision in the middle, coarse sectors on the peripheral ones Areas etc.).
In einer weiteren nicht dargestellten Ausführung besteht die Schutzbrille nur teilweise aus LCDs, während die restlichen Bereiche der Brille klar sind oder eine bestimmte unveränderliche Tönung haben.In a further embodiment, not shown, the protective glasses consist only partially LCDs while the remaining areas of the glasses are clear or specific have a constant tint.
In einer weiteren nicht dargestellten Ausführung besteht die Brille aus optischen oder nicht optischen Gläsern, die aus Glas oder Kunststoff bestehen können.In a further embodiment, not shown, the glasses consist of optical or not optical glasses, which can be made of glass or plastic.
In einer weiteren nicht dargestellten Ausführung besteht das LCD aus einer polymeren Folie, die sich auf optischen oder nicht optischen Brillengläsern befindet. (solche polymeren LCDs befinden sich zur Zeit in Entwicklung).In a further embodiment, not shown, the LCD consists of a polymer film, which is on optical or non-optical glasses. (such polymeric LCDs are currently under development).
In einer weiteren nicht dargestellten Ausführung dienen die Lichtsensoren gleichzeitig als Stromquelle für die entsprechenden LCD-Segmente. (So könnten Solarzellen gleichzeitig als Sensoren und Stromquelle dienen).In a further embodiment, not shown, the light sensors simultaneously serve as Power source for the corresponding LCD segments. (So solar cells could be used as Serve sensors and power source).
In einer weiteren, nicht dargestellten Ausführung ist die selektive Lichtschutzbrille in das Visier in eines Helms integriert (Piloten-, Motorradhelm etc.).In a further embodiment, not shown, the selective light protection glasses are in the Visor integrated in a helmet (pilot's, motorcycle helmet etc.).
In einer weiteren, nicht dargestellten Ausführung ist das System des selektiven Lichtschutzes in einer Foto- oder Videokamera integriert - die LCD jeweils vor dem Film bzw. dem CCD-Chip.In a further embodiment, not shown, is the system of selective light protection integrated in a photo or video camera - the LCD in front of the film or the CCD chip.
Claims (13)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997114434 DE19714434A1 (en) | 1997-04-08 | 1997-04-08 | Selective electronic photo-protective spectacles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997114434 DE19714434A1 (en) | 1997-04-08 | 1997-04-08 | Selective electronic photo-protective spectacles |
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| Publication Number | Publication Date |
|---|---|
| DE19714434A1 true DE19714434A1 (en) | 1998-10-15 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1997114434 Withdrawn DE19714434A1 (en) | 1997-04-08 | 1997-04-08 | Selective electronic photo-protective spectacles |
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| US7839576B2 (en) | 2006-05-17 | 2010-11-23 | Essilor International (Compagnie Generale D'optique) | Producing a transparent optical element comprising a substance contained in cells |
| US8092017B2 (en) | 2004-07-02 | 2012-01-10 | Essilor International (Compangie Generale d'optique) | Method for producing an ophthalmic lens and an optical component for carrying out said method |
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| WO2005119347A1 (en) * | 2003-05-20 | 2005-12-15 | Conoptix Ab | Protection eyewear |
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