FR2555292A1 - Anti - dazzle headlights - Google Patents
Anti - dazzle headlights Download PDFInfo
- Publication number
- FR2555292A1 FR2555292A1 FR8319377A FR8319377A FR2555292A1 FR 2555292 A1 FR2555292 A1 FR 2555292A1 FR 8319377 A FR8319377 A FR 8319377A FR 8319377 A FR8319377 A FR 8319377A FR 2555292 A1 FR2555292 A1 FR 2555292A1
- Authority
- FR
- France
- Prior art keywords
- polarizing
- headlights
- light
- vehicles
- glasses
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/12—Polarisers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/135—Polarised
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Un problème grave pour de nombreux conducteurs de véhicules est celui de l'éblouissement. Il est connu qu' après avoir été ébloui par les phares plus ou moins mal réglés d'un véhicule arrivant face à lui, un conducteur à la vue sensible demeure pratiquement aveugle pendant un temps pouvant atteindre plusieurs secondes, et pendant lequel il poursuit son chemin, pendant des dizaines ou même des centaines de mètres. A serious problem for many vehicle drivers is that of glare. It is known that after being dazzled by the more or less ill-adjusted headlights of a vehicle arriving in front of it, a driver with a sensitive vision remains practically blind for a time which can reach several seconds, and during which he continues on his way. , for tens or even hundreds of meters.
De nombreux expédients ont été proposés, depuis les systèmes déclenchant automatiquement le passage en feux de croisement quand un véhicule se présente en face, jusqu'à des lunettes "anti-éblouissement". Many expedients have been proposed, from systems automatically triggering the passing into low beam when a vehicle comes in front, to "anti-glare" glasses.
Le premier type de système est coûteux et doit être financé, non par le conducteur sensible à l'éblouissement, mais par tous les autres. Le second a surtout pour effet de diminuer la visibilité du conducteur de façon permanente. The first type of system is expensive and must be funded, not by the glare-sensitive driver, but by everyone else. The second mainly has the effect of permanently reducing the driver's visibility.
La présente invention a pour avantage d'être applicable à très peu de frais à la totalité des véhicules, tandis que seuls les conducteurs sensibles auront la faculté d'en bénéficier, à leur gré et à leurs propres frais. The present invention has the advantage of being applicable at very low cost to all vehicles, while only sensitive drivers will be able to benefit from it, at their discretion and at their own expense.
Ce nouveau système repose sur l'application bien connue de la propriété de deux faisceaux de lumière polarisée de ne subir aucun affaiblissement s'ils sont en phase ou de s'annuler s'ils sont en opposition de phase. This new system is based on the well-known application of the property of two beams of polarized light not to undergo any weakening if they are in phase or to cancel out if they are in phase opposition.
Ainsi, si la glace des phares de tous les véhicules est réalisée en verre polarisant, ou recouverte d'une pellicule polarisante, il suffira au conducteur sensible de placer sur le trajet du faisceau de ces phares un écran polarisant en opposition de phase pour que ce faisceau ne soit plus reçu. Thus, if the glass of the headlights of all vehicles is made of polarizing glass, or covered with a polarizing film, it will suffice for the sensitive driver to place on the path of the beam of these headlights a polarizing screen in phase opposition so that this beam is no longer received.
Un premier moyen consiste à réaliser tout ou partie de pare-brise du conducteur sensible avec une pellicule polarisante. Cette solution est techniquement, possible, mais finan cièrement trop coûteuse en raison de la superficie du pare-brise à traiter ou équiper ainsi. A first means consists in producing all or part of the sensitive conductor's windshield with a polarizing film. This solution is technically possible, but financially too costly because of the surface area of the windshield to be treated or fitted in this way.
Un second moyen consiste à rendre reglementaire l'ame- nagement précité des glaces de phares, au moyen par exemple de pastilles thermocollantes de petites dimensions en pellicule polarisant la lumière dans une direction bien déterminée, essentiellement celle du faisceau "phare". Il suffit alors à tout conducteur sensible à l'éblouissement, et à ceux là seulement, de se procurer des lunettes à polarisation partielle en totale correspondance à ces pastilles règlementaires. A second means consists in making the aforementioned arrangement of the headlight glass regulatory, by means for example of small iron-on patches in film polarizing the light in a well-defined direction, essentially that of the "headlight" beam. It then suffices for any driver sensitive to glare, and only for those there, to obtain glasses with partial polarization in total correspondence to these regulatory pastilles.
Ainsi, la règlementation n imposerait à la collectivité qu'une dépense minime, mais obligatoire et généralisée, et seuls les conducteurs concernés auraient, à leur gré, et à leur frais, la possibilité de bénéficier d'une protection certaine. Thus, the regulations impose on the community only a minimal, but compulsory and generalized expense, and only the drivers concerned would, at their option, and at their expense, be able to benefit from certain protection.
Dans la pratique, l'expérience montre que la zone à rendre polarisante de la glace des phares correspond pratiquement à un rectangle de 5 X 10 cm, dont la longueur est horizontale. Le moyen le plus simple et le moins coûteux de constituer cette zone consiste à apposer sur l'emplacement approprié de la glace un tel rectangle autocollant réalisé en pellicule souple transparente traitée de manière à déterminer une polarisation de la lumière suivant une orientation fixée règlementairement, Un autre moyen pourrait consister à créer une telle zone au sein même du maté riau constituant la glace du phare.Ce moyen serait plus coûteux dans l'état actuel de la technique, mais son prix de revient pourrait se trouver réduit dans la mesure où, s'agissant d'une règlementation imposée à tous les véhicules, ces glaces seraient fabriquées en très grande série. Les deux moyens rentrent donc dans le cadre de l'invention. In practice, experience shows that the area to be polarized from the headlight glass corresponds practically to a rectangle of 5 X 10 cm, the length of which is horizontal. The simplest and least costly way to constitute this zone consists in affixing on the appropriate location of the glass such a self-adhesive rectangle made of transparent flexible film treated so as to determine a polarization of the light according to an orientation fixed by regulation, A other means could consist in creating such a zone within the material constituting the lighthouse ice. This means would be more expensive in the current state of the art, but its cost price could be reduced insofar as, s '' being a regulation imposed on all vehicles, these windows would be manufactured in very large series. The two means therefore fall within the scope of the invention.
Les conducteurs concernés, c est-à-dire ceux sensibles à l'éblouissement, et eux seuls, n'auraient donc qu'à se procurer une paire de lunettes équipées de verres polarisant la lumière dans l'orientation perpendiculaire à celle évoquée ci-dessus. Le faisceau provenant de phares mal réglés serait "éteint" par ces lunettes et'n'atteindrait donc pas l'oeil du conducteur portant lesdites lunettes qui, par ailleurs n'entrainent pratiquement aucune altération de la vue du conducteur,
La mise en oeuvre del'invention, même si elle ne résulte pas d'une règlementation obligatoire, apporterait un progrès considerable dans les conditions de sécurité de la circulation, aussi bien urbaine que routière, dans la mesure où l'éblouissement est à l'origine de nombreux accidents. The conductors concerned, that is to say those sensitive to glare, and they alone, would therefore only have to obtain a pair of glasses equipped with lenses polarizing the light in the orientation perpendicular to that mentioned above. above. The beam coming from poorly adjusted headlights would be "turned off" by these glasses and therefore would not reach the eye of the driver wearing said glasses which, moreover, practically does not cause any impairment of the driver's view,
The implementation of the invention, even if it does not result from compulsory regulations, would bring considerable progress in traffic safety conditions, both urban and road, insofar as the glare is at the origin of many accidents.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MC1666 | 1983-11-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2555292A1 true FR2555292A1 (en) | 1985-05-24 |
Family
ID=19738070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8319377A Pending FR2555292A1 (en) | 1983-11-21 | 1983-12-01 | Anti - dazzle headlights |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2555292A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR876005A (en) * | 1941-10-15 | 1942-10-12 | Hugo Schneider Ag | Automobile headlight |
US2562895A (en) * | 1949-07-01 | 1951-08-07 | John F Dreyer | Polarizing means for reducing headlight glare and other purposes |
FR2199094A1 (en) * | 1972-09-12 | 1974-04-05 | Bosch Gmbh Robert | |
FR2251778A1 (en) * | 1973-11-19 | 1975-06-13 | Guiguet Alfred | Polarising lamp and windscreen attachment - to prevent dazzle from headlamps of oncoming vehicles |
FR2444886A1 (en) * | 1978-12-20 | 1980-07-18 | Elfandi Patrice | Suppression of dazzle from vehicle lights - utilises polarising filters which act as integral part of lamps and windscreens |
-
1983
- 1983-12-01 FR FR8319377A patent/FR2555292A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR876005A (en) * | 1941-10-15 | 1942-10-12 | Hugo Schneider Ag | Automobile headlight |
US2562895A (en) * | 1949-07-01 | 1951-08-07 | John F Dreyer | Polarizing means for reducing headlight glare and other purposes |
FR2199094A1 (en) * | 1972-09-12 | 1974-04-05 | Bosch Gmbh Robert | |
FR2251778A1 (en) * | 1973-11-19 | 1975-06-13 | Guiguet Alfred | Polarising lamp and windscreen attachment - to prevent dazzle from headlamps of oncoming vehicles |
FR2444886A1 (en) * | 1978-12-20 | 1980-07-18 | Elfandi Patrice | Suppression of dazzle from vehicle lights - utilises polarising filters which act as integral part of lamps and windscreens |
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