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WO1990004130A1 - Projecteur ou feu de signalisation, notamment pour vehicules a moteur - Google Patents

Projecteur ou feu de signalisation, notamment pour vehicules a moteur Download PDF

Info

Publication number
WO1990004130A1
WO1990004130A1 PCT/DE1989/000509 DE8900509W WO9004130A1 WO 1990004130 A1 WO1990004130 A1 WO 1990004130A1 DE 8900509 W DE8900509 W DE 8900509W WO 9004130 A1 WO9004130 A1 WO 9004130A1
Authority
WO
WIPO (PCT)
Prior art keywords
reflector
light source
optical axis
angle
ring
Prior art date
Application number
PCT/DE1989/000509
Other languages
German (de)
English (en)
Inventor
Heinrich Schmid
Margret Schmock Von Ohr
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1990004130A1 publication Critical patent/WO1990004130A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • 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
    • F21S41/28—Cover glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255

Definitions

  • the invention relates to a headlight according to the type of the main claim.
  • headlights and lights with ever smaller light outlet openings are required.
  • the headlight efficiency must be improved, that is to say the proportion of the light emitted by the light source that is emitted to the front must be increased. This is possible by arranging optical elements around the light source which collect the light emitted by it. It is from the
  • a generic headlight in which for this purpose a light collection system composed of different, ring lenses, optical elements, a light source arranged on a central optical axis and a reflector partially surrounding it on the back and on the side at the front
  • the reflector is designed as an ellipsoid of revolution. Since the light collection system encloses the light source and reflector, this is very large. In addition, the light collection system is given a complicated shape by combining different optical elements. A complete parallel direction of the light emitted by the light source is not possible since the reflector has two focal points.
  • the headlamp according to the invention with the characterizing features of the main claim has the advantage that the optical elements that form the light collection system can be designed as simple ring lenses and only need to enclose the light source.
  • the reflector is formed in a simple manner from at least one flat reflection surface lying outside the ring lenses.
  • the part of the light emitted by the light source that is captured by the ring lenses can be increased further.
  • a very small, low-profile design of a headlamp is achieved with a high luminous efficiency.
  • a particularly narrow design is made possible by the design of the headlight according to claim 5.
  • FIG. 1 shows a first embodiment 2 shows the variant of the headlight in FIG. 2
  • FIG. 3 shows the headlight in longitudinal section along line III-III in FIG. 2
  • FIG. 4 in 5 shows a second exemplary embodiment of the headlight in front view
  • FIG. 6 shows the headlight in cross section along the line VI-VI in FIG. 5.
  • a first embodiment of a headlamp is shown in a rectangular shape and with a small height in front view.
  • the headlight consists of a light source 5 and a reflector 1, which is formed by two plane reflection surfaces 3, which are inclined at an angle ⁇ of 45 degrees to a central optical axis 2, perpendicular to a plane passing through the optical axis and which are formed in
  • the reflector 1 is closed off by boundary walls 8 arranged perpendicular to the reflection surfaces 3.
  • the headlight which forms an outlet opening in the form of a narrow rectangle, is closed off by a translucent pane, not shown, which, if necessary, can also have refractive properties.
  • the light source 5 is arranged on the central optical axis 2 of the headlight.
  • a first ring lens 6 is mounted perpendicular to the optical axis 2 in front of the light source 5, the two further ring lenses 7 are at an angle ⁇ of 0 degrees, that is to say parallel to the optical one Axis 2 and arranged perpendicular to the plane passing through the optical axis 2 to the front ring lens 6.
  • All three ring lenses advantageously form identical rectangular elements which laterally adjoin the boundary walls 8.
  • the two laterally arranged ring lenses 7 encompass the light source 5 and come into contact with the reflection surfaces 3 of the reflector near the reflector neck 4.
  • the ring lenses 6, 1, the reflection surfaces 3 of the reflector 1 and the boundary walls 8 thus form a closed box around the light source 5, from which light can only emerge through the ring lenses 6, 7.
  • the light source 5, e.g. B. a filament 13 of an incandescent lamp, is located in the focus of the three ring lenses 6, 7th
  • Light 11 emerging from the light source 5 strikes the front ring lens 6 and is refracted on it so that it emerges parallel to the optical axis 2.
  • Light 12 emerging laterally from the light source 5 strikes the laterally arranged ring lenses 7, is broken at these so that it emerges perpendicular to the optical axis 2 and is reflected on the reflection surfaces 3 of the reflector in such a way that it extends parallel to the optical axis 2 to the front the headlight emerges.
  • the light source has a rod-shaped filament 13 and the light source 5 is arranged so that its filament 13 is perpendicular to the optical axis 2 and parallel to the lateral ring lenses 7, this is due to the arrangement of the ring lenses 6, 7 and the reflector 1 detected portion of the light emitted by the light source 5 is greatest.
  • the angle ⁇ results which the reflection surfaces 3 must have against the optical axis 2 , than half the difference of an angle of 90 degrees and the angle ⁇ . This ensures that the light always exits the headlight parallel to the optical axis 2 to the front.
  • the reflection surfaces 3 in the region between the reflector neck 4 and the lateral ring lenses 7 are designed as surfaces 14 of a sphere, the center of which lies approximately in the middle of the filament 13 of the light source 5.
  • light 15 emerging from the light source 5 to the rear can also be partially used, starting from the incandescent filament 13, striking the surfaces 14 of the sphere, being reflected there and striking the front ring lens 6 and being broken here in such a way that it emerges parallel to the optical axis 2.
  • a second embodiment of the headlamp is shown.
  • a lateral ring lens 17 is inclined at an angle ⁇ of zero degrees to the optical axis 2, that is to say parallel to the front ring lens 6 and laterally extending to the reflector 11.
  • the reflector 11 consists on the side of the optical axis 2, on which the lateral ring lens 17 is arranged, of a flat reflection surface 23 arranged at an angle ⁇ of 45 degrees to the optical axis 2 and on the opposite side of the optical axis 2 of a reflecting surface Surface 18 of a sphere, the center of which lies approximately in the center of the filament 13 of the light source 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Un projecteur rectangulaire à hauteur très réduite est décrit. Dans le cas de petits projecteurs, il faut prendre des mesures particulières afin d'utiliser une partie aussi grande que possible de la lumière émise par la source (5) de lumière et satisfaire ainsi aux prescriptions légales. A cet effet, la source de lumière (5) du projecteur est entourée d'un système collecteur de lumière composé d'au moins deux lentilles rectangulaires de Fresnel (6, 7) identiques et d'un réflecteur (1) formé de manière très simple d'au moins une surface plate de réflexion (3).
PCT/DE1989/000509 1988-10-06 1989-08-02 Projecteur ou feu de signalisation, notamment pour vehicules a moteur WO1990004130A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3834023.2 1988-10-06
DE3834023A DE3834023A1 (de) 1988-10-06 1988-10-06 Scheinwerfer oder signalleuchte, insbesondere fuer kraftfahrzeuge

Publications (1)

Publication Number Publication Date
WO1990004130A1 true WO1990004130A1 (fr) 1990-04-19

Family

ID=6364522

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1989/000509 WO1990004130A1 (fr) 1988-10-06 1989-08-02 Projecteur ou feu de signalisation, notamment pour vehicules a moteur

Country Status (3)

Country Link
DE (1) DE3834023A1 (fr)
ES (1) ES2016190A6 (fr)
WO (1) WO1990004130A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2874994A1 (fr) * 2004-09-07 2006-03-10 Valeo Vision Sa Projecteur d'eclairage ou de signalisation en forme de bandeau comportant un miroir plan a echelons
EP1577608A3 (fr) * 2004-03-16 2006-11-15 Schefenacker Vision Systems Germany GmbH Luminaire avec une structure optique pour influencer le rayonnement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3104870B2 (ja) * 1998-01-29 2000-10-30 スタンレー電気株式会社 自動車用ランプ
JP3390412B2 (ja) 2000-08-07 2003-03-24 株式会社キャットアイ ヘッドランプ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR776891A (fr) * 1935-02-05
EP0229572A1 (fr) * 1985-12-31 1987-07-22 Valeo Vision Feu de signalisation à éclairement coloré, notamment pour véhicule automobile

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR776891A (fr) * 1935-02-05
EP0229572A1 (fr) * 1985-12-31 1987-07-22 Valeo Vision Feu de signalisation à éclairement coloré, notamment pour véhicule automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1577608A3 (fr) * 2004-03-16 2006-11-15 Schefenacker Vision Systems Germany GmbH Luminaire avec une structure optique pour influencer le rayonnement
FR2874994A1 (fr) * 2004-09-07 2006-03-10 Valeo Vision Sa Projecteur d'eclairage ou de signalisation en forme de bandeau comportant un miroir plan a echelons
EP1632710A3 (fr) * 2004-09-07 2008-11-05 Valeo Vision Projecteur d'éclairage ou de signalisation en forme de bandeau comportant un miroir plan à échelons

Also Published As

Publication number Publication date
ES2016190A6 (es) 1990-10-16
DE3834023A1 (de) 1990-04-12

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