CH475508A - Lighting device - Google Patents
Lighting deviceInfo
- Publication number
- CH475508A CH475508A CH918267A CH918267A CH475508A CH 475508 A CH475508 A CH 475508A CH 918267 A CH918267 A CH 918267A CH 918267 A CH918267 A CH 918267A CH 475508 A CH475508 A CH 475508A
- Authority
- CH
- Switzerland
- Prior art keywords
- sub
- lighting device
- prism
- face
- reflecting surface
- Prior art date
Links
- 239000006185 dispersion Substances 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims 1
- 230000001788 irregular Effects 0.000 claims 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
-
- 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
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
-
- 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
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
- F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
- F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Dispositif d'éclairage Dans bien des cas l'utilisateur aimerait disposer d'une source de lumière répartie le plus uniformément possible sur une certaine longueur sans être ébloui par le foyer d'une source ponctuelle ou linéaire comme c'est le cas des lampes, usuelles.
La présente invention a précisément pour objet un dispositif d'éclairage caractérisé par le fait qu'il com prend au moins .une source lumineuse émettant un fais ceau parallèle, une surface réfléchissante éclairée par le faisceau, s'étendant parallèlement à un plan et présentant une section droite en dents de scie, les flancs de ces dents en regard dudit faisceau étant orientés de telle façon que les rayons incidents du faisceau soient réfléchis dans une direction perpendiculaire audit plan.
Le dessin annexé représente, à titre d'exemple, une forme d'exécution de l'objet de l'invention.
La fig. 1 en représente une vue en plan.
La fig. 2 en représente une vue en coupe selon 11-1I de la fig. 1.
Le dispositif d'éclairage représenté au dessin com prend deux projecteurs fixes 1 et 2 situés en regard l'un de l'autre et émettant un faisceau parallèle 3, respective ment 4. Les axes de ces deux faisceaux coïncident l'un avec l'autre.
Entre les deux projecteurs 1 et 2, sur la trajectoire des faisceaux 3 et 4, est disposé un corps prismatique 5 en matière transparente, dont les génératrices sont parallèles aux faisceaux et dont les extrémités présentent des faces planes 6 et 7 dirigées obliquement par rapport aux fais ceaux, l'angle formé par ses parois avec les faisceaux étant tel que ces faisceaux soient déviés par réfraction en direction de la face postérieure 9 du prisme 5. Cette face présente une section en dents de scie, les flancs de ces dents frappés par les rayons incidents du faisceau étant orientés de telle manière que les rayons réfléchis 10 soient perpendiculaires à l'axe du prisme.
La réflexion sur la surface dentelée 9 est assurée par un étamage pro tégé par une couche 8 en matière opaque ou transpa rente. La surface dentelée 9 peut être obtenue soit par moulage ou par fraisage.
La forme d'exécution représentée étant avant tout destinée à équiper un véhicule automobile, le prisme 5 est fixé sur un support 11 orientable autour d'un axe 12. Le passage des feux de route en code se fera donc sim plement par le pivotement du support 11.
La face antérieure 13 du prisme sera en outre légère ment bombée de façon à obtenir la dispersion nécessaire du faisceau. L'éclairage latéral pourra être réalisé sim plement en prévoyant à chaque extrémité du prisme des zones de dispersion 14 et 15.
Le phare ainsi réalisé sera antiéblouissant. Le pas sage en code ne nécessitant plus de commutation électri que, la durée de vie des sources lumineuses 1 et 2 sera notablement plus élevée. En outre, il sera possible de loger ces sources dans les ailes du véhicule, à l'abri des chocs et de la poussière.
Le prisme peut être réalisé en matière incassable et monté élastiquement de manière à amortir le choc d'une collision et augmenter ainsi la sécurité des passagers.
En variante, il est possible de remplacer le prisme 5 par une simple surface réfléchissante en dents de scie, les faisceaux lumineux 3 et 4 étant dirigés directement sur cette surface de manière à être réfléchis en avant.
L'application aux véhicules automobiles n'a été citée qu'à titre d'exemple. Un tel dispositif d'éclairage trou vera de nombreuses autres applications, telles que éclai rage de salles d'opérations, éclairage latéral de route ou de pistes d'aérodromes au moyen d'une barrière ou d'une glissière de sécurité constituée précisément par une sur face ou un prisme réfléchissant, un tel éclairage étant susceptible de rendre de grands services, notamment par brouillard. Notons qu'il est sans autre possible de supprimer l'une des sources lumineuses, une source suffisant à ba layer toute la surface réfléchissante.
En outre, la surface réfléchissante sera en pratique dentelée beaucoup plus finement que représenté au dessin, de manière à réduire les zones d'ombre.
Lighting device In many cases the user would like to have a light source distributed as uniformly as possible over a certain length without being dazzled by the focus of a point or linear source as is the case with lamps, usual.
The present invention specifically relates to a lighting device characterized by the fact that it comprises at least a light source emitting a parallel beam, a reflecting surface illuminated by the beam, extending parallel to a plane and having a straight sawtooth section, the flanks of these teeth facing said beam being oriented such that the incident rays of the beam are reflected in a direction perpendicular to said plane.
The appended drawing represents, by way of example, an embodiment of the object of the invention.
Fig. 1 shows a plan view.
Fig. 2 shows a sectional view along 11-1I of FIG. 1.
The lighting device shown in the drawing com takes two fixed projectors 1 and 2 located opposite each other and emitting a parallel beam 3, respectively 4. The axes of these two beams coincide with each other. other.
Between the two projectors 1 and 2, on the path of the beams 3 and 4, is arranged a prismatic body 5 in transparent material, the generatrices of which are parallel to the beams and the ends of which have flat faces 6 and 7 directed obliquely with respect to the beams. beams, the angle formed by its walls with the beams being such that these beams are deflected by refraction in the direction of the rear face 9 of the prism 5. This face has a sawtooth section, the flanks of these teeth struck by the incident rays of the beam being oriented such that the reflected rays 10 are perpendicular to the axis of the prism.
The reflection on the indented surface 9 is provided by a tinning protected by a layer 8 of opaque or transparent material. The serrated surface 9 can be obtained either by molding or by milling.
The embodiment shown being primarily intended to equip a motor vehicle, the prism 5 is fixed to a support 11 which can be oriented around an axis 12. The passage of the high beam headlights in code will therefore be done simply by the pivoting of the support 11.
The anterior face 13 of the prism will also be slightly curved so as to obtain the necessary dispersion of the beam. Lateral lighting can be achieved simply by providing dispersion zones 14 and 15 at each end of the prism.
The lighthouse thus produced will be anti-glare. Since the step wise in code no longer requires electrical switching, the lifetime of light sources 1 and 2 will be considerably longer. In addition, it will be possible to accommodate these sources in the fenders of the vehicle, protected from shocks and dust.
The prism may be made of unbreakable material and resiliently mounted so as to absorb the impact of a collision and thus increase the safety of the passengers.
As a variant, it is possible to replace the prism 5 by a simple reflecting sawtooth surface, the light beams 3 and 4 being directed directly on this surface so as to be reflected forward.
The application to motor vehicles was cited only as an example. Such a lighting device will have many other applications, such as lighting of operating theaters, lateral lighting of roads or aerodrome runways by means of a barrier or a guardrail constituted precisely by a on the face or a reflective prism, such lighting being capable of rendering great services, in particular in fog. Note that it is without further possible to remove one of the light sources, a source sufficient to layer the entire reflecting surface.
In addition, the reflecting surface will in practice be much finer serrated than shown in the drawing, so as to reduce the shadow areas.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH918267A CH475508A (en) | 1967-06-28 | 1967-06-28 | Lighting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH918267A CH475508A (en) | 1967-06-28 | 1967-06-28 | Lighting device |
Publications (1)
Publication Number | Publication Date |
---|---|
CH475508A true CH475508A (en) | 1969-07-15 |
Family
ID=4349227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH918267A CH475508A (en) | 1967-06-28 | 1967-06-28 | Lighting device |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH475508A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4642736A (en) * | 1984-07-02 | 1987-02-10 | Mitsubishi Rayon Company, Ltd. | Light diffuser |
DE9204063U1 (en) * | 1992-03-26 | 1993-04-15 | Buechner, Thomas, 8901 Deubach | Backlight |
US5408388A (en) * | 1992-01-24 | 1995-04-18 | Stanley Electric Co., Ltd. | Planar illuminating device |
EP1106905A3 (en) * | 1999-11-30 | 2002-02-06 | GEBRUEDER LUDWIG GmbH | Luminaire |
EP1033526A3 (en) * | 1999-03-02 | 2002-03-13 | VALEO Beleuchtung Deutschland GmbH | Lamp, in particular for motor vehicles |
EP1085253A3 (en) * | 1999-09-14 | 2002-04-24 | VALEO Beleuchtung Deutschland GmbH | Lamp, in particular for motor vehicles |
-
1967
- 1967-06-28 CH CH918267A patent/CH475508A/en not_active IP Right Cessation
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4642736A (en) * | 1984-07-02 | 1987-02-10 | Mitsubishi Rayon Company, Ltd. | Light diffuser |
US5408388A (en) * | 1992-01-24 | 1995-04-18 | Stanley Electric Co., Ltd. | Planar illuminating device |
DE9204063U1 (en) * | 1992-03-26 | 1993-04-15 | Buechner, Thomas, 8901 Deubach | Backlight |
EP1033526A3 (en) * | 1999-03-02 | 2002-03-13 | VALEO Beleuchtung Deutschland GmbH | Lamp, in particular for motor vehicles |
EP1085253A3 (en) * | 1999-09-14 | 2002-04-24 | VALEO Beleuchtung Deutschland GmbH | Lamp, in particular for motor vehicles |
EP1106905A3 (en) * | 1999-11-30 | 2002-02-06 | GEBRUEDER LUDWIG GmbH | Luminaire |
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Legal Events
Date | Code | Title | Description |
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PL | Patent ceased |