EP0153485A2 - Projecteur non-éblouissant pour véhicules - Google Patents

Projecteur non-éblouissant pour véhicules Download PDF

Info

Publication number
EP0153485A2
EP0153485A2 EP84115982A EP84115982A EP0153485A2 EP 0153485 A2 EP0153485 A2 EP 0153485A2 EP 84115982 A EP84115982 A EP 84115982A EP 84115982 A EP84115982 A EP 84115982A EP 0153485 A2 EP0153485 A2 EP 0153485A2
Authority
EP
European Patent Office
Prior art keywords
light
reflector
vehicle headlight
vertical
section
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Withdrawn
Application number
EP84115982A
Other languages
German (de)
English (en)
Other versions
EP0153485A3 (fr
Inventor
Wilhelm Röhling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
Westfaelische Metall Industrie KG Hueck and Co
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 Hella KGaA Huek and Co, Westfaelische Metall Industrie KG Hueck and Co filed Critical Hella KGaA Huek and Co
Publication of EP0153485A2 publication Critical patent/EP0153485A2/fr
Publication of EP0153485A3 publication Critical patent/EP0153485A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations

Definitions

  • the invention relates to a dimmed vehicle headlight with a cup-shaped reflector, the inner reflection surface of which forms a section of ellipses in the axial longitudinal sections, of which an apex and the associated focal point are congruent and whose eccentricity from the vertical axial center section to the horizontal axial center section increases and with an umbrella arranged in the second focal point of the ellipse resulting in the vertical axial central section of the reflector and producing the light / dark boundary, and with a convex converging lens arranged at least approximately in the second focal point of the ellipse resulting in the horizontal axial central section of the reflector, the edge of the diaphragm generating the light / dark boundary lying in the imaging surface of the converging lens.
  • a vehicle headlight of this type is known from DE-OS 32 18 702.
  • the light generated by this headlight is strongly bundled in the vertical direction and is scattered horizontally.
  • the lateral scatter of the light is still so low that objects on the side of the road, such as. B. traffic signs are not sufficiently illuminated.
  • the object of the invention is to improve the light distribution of the known headlamp described above so that a greater lateral scatter of the light is achieved without significantly reducing the illumination of the road.
  • This object is achieved according to the invention in that light-scattering means which scatter the light in the horizontal direction are arranged in the regions of the reflection surface which adjoin the horizontal axial central section. It is expedient here if those adjoining the vertical axial central section of the reflector Reflection areas remain free of light-scattering agents.
  • the light-scattering means are designed as ribs and each rib runs in such a vertical plane which is at an acute angle to the vertical central plane and the angle is determined by the bisector of the incident and emerging light beam of the ellipsoidal base body .
  • the light is scattered by the ribs only in the horizontal direction. Vertically scattered light would be half covered by the aperture and half. others undesirably lighten the apron.
  • the ribs of each reflector half run in vertical planes which meet in the intersection of the plane of the inner scattering rib and the bisector of the angle of incidence and exit of the outer light beam, the inner rib being at an equidistant distance from one another vertical center plane.
  • the scattering of the light in the vertical is so small that it is not noticeable.
  • the reflector has no undercut when viewed in the main light exit direction. The latter is important because such reflectors can only be economically produced in a mass production using the injection or die-casting process and the manufacturing tools for molds without undercuts are particularly favorable in their structure and stability.
  • the reflector on the outer edge has no draft, which makes it relatively difficult to demold.
  • This disadvantage does not apply if the depth of the reflector is somewhat smaller than the respective longer semiaxis of the ellipses formed in the axial longitudinal sections.
  • the disadvantage that arises that the lateral scattering of the light is no longer so great is advantageous way canceled if the surface of the ribs in cross-section describes such an arc that the width of the diaphragm edge intended for imaging is exposed to light. It is useful if the arc is a circular arc.
  • the radius of the circular arc is the same over the entire length of the rib. This allows the profiling to be produced mechanically. In addition, there is a different side scatter depending on the height of the rib, so that there is an optimal, soft light distribution in the lateral course.
  • a vehicle headlight which essentially consists of an ellipsoid reflector 8 and an aperture 7 interposed between the convex converging lens 6 and reflector 8.
  • the inner reflection surface in each case forms a half-ellipse which is trimmed to the outer edge 11 in the axial central sections.
  • the apex S and the associated inner focal point F of the semi-ellipses are congruent.
  • the eccentricity of the ellipses decreases from the vertical axial center cut to the horizontal axial center cut.
  • the convex converging lens 6 is arranged in the vicinity of the outer second focal point F2 of the ellipse of the reflector 8 which results in the horizontal axial central section.
  • the upper, substantially horizontal edge of the diaphragm 7, which produces the light / dark boundary, is arranged, which has a radius R ⁇ 35 mm.
  • the reflector 8 has, apart from the smooth reflection regions 4 adjoining the vertical axial central section of the reflector, the light-scattering optical means 3.
  • the optical means are designed as ribs 3, which are arranged in the areas 1 and 2 adjoining the horizontal axial central section.
  • the ribs 3 run in the areas 1 and 2 in vertical planes 10 which meet in the section line 9 from the plane 10 'of the inner scattering rib 3' and the bisector 12 of the angle of incidence and the exit of the outer light beam.
  • the inner rib 3 'of each reflector half runs at an equidistant distance from the vertical central plane.
  • the radius is the same over the entire length of the ribs 3.
  • the ratio of pitch (t) / radius (r) is 1:15 - this means that the light from each rib 3 is scattered at an optimal angle ⁇ up to 15 ° in the horizontal direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
EP84115982A 1984-02-25 1984-12-20 Projecteur non-éblouissant pour véhicules Withdrawn EP0153485A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3406876A DE3406876C1 (de) 1984-02-25 1984-02-25 Abgeblendeter Fahrzeugscheinwerfer
DE3406876 1984-02-25

Publications (2)

Publication Number Publication Date
EP0153485A2 true EP0153485A2 (fr) 1985-09-04
EP0153485A3 EP0153485A3 (fr) 1987-10-14

Family

ID=6228816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115982A Withdrawn EP0153485A3 (fr) 1984-02-25 1984-12-20 Projecteur non-éblouissant pour véhicules

Country Status (6)

Country Link
EP (1) EP0153485A3 (fr)
JP (1) JPS60216402A (fr)
AU (1) AU3857685A (fr)
DD (1) DD232337A5 (fr)
DE (1) DE3406876C1 (fr)
ES (1) ES284366Y (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254746A4 (fr) * 1985-12-27 1988-03-30 Ichikoh Industries Ltd Phare a projecteur pour vehicules.
FR2704044A1 (fr) * 1993-04-15 1994-10-21 Valeo Vision Projecteur du genre elliptique pour véhicule automobile.
EP1426675A3 (fr) * 2002-12-02 2006-11-02 Ichikoh Industries, Ltd. Projecteur de véhicule, réflecteur pour projecteur de véhicule, programme d'ordinateur pour la conception de ce réflecteur

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0789444B2 (ja) * 1986-02-10 1995-09-27 市光工業株式会社 プロジエクタ型の前照灯
JPS6471001A (en) * 1987-09-10 1989-03-16 Koito Mfg Co Ltd Head light of vehicle
JPH01120702A (ja) * 1987-11-05 1989-05-12 Koito Mfg Co Ltd 車輌用前照灯
GB8824206D0 (en) * 1988-10-15 1988-11-23 Carello Lighting Plc Motor vehicle headlamp
AT404396B (de) * 1996-12-05 1998-11-25 Zizala Lichtsysteme Gmbh Rillenscheinwerfer
DE102020130859A1 (de) 2020-11-23 2022-05-25 Marelli Automotive Lighting Reutlingen (Germany) GmbH Kraftfahrzeugbeleuchtungseinrichtung mit einem Reflektor und Verfahren zum Gestalten einer Reflexionsfläche eines Reflektors einer solchen Kraftfahrzeugbeleuchtungseinrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1459372A (en) * 1923-06-19 Keflectob for lights
DE427143C (de) * 1920-08-06 1926-03-27 Duncan James Ritchie Scheinwerferlampe, insbesondere fuer Automobile, mit Reflektor, Projektionslinse undObturator
US1572853A (en) * 1922-09-19 1926-02-09 American Flatlite Company Light projector
DE617846C (de) * 1932-04-04 1935-08-27 Camille Montchatre Elektrischer Scheinwerfer zur Beleuchtung einer rechteckigen Flaeche
FR2460442A1 (fr) * 1979-06-29 1981-01-23 Cibie Projecteurs Nouvelle structure de projecteur, notamment de projecteur d'automobile
DE3218702C2 (de) * 1982-05-18 1987-01-29 Hella KG Hueck & Co, 4780 Lippstadt Fahrzeugscheinwerfer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0254746A4 (fr) * 1985-12-27 1988-03-30 Ichikoh Industries Ltd Phare a projecteur pour vehicules.
FR2704044A1 (fr) * 1993-04-15 1994-10-21 Valeo Vision Projecteur du genre elliptique pour véhicule automobile.
EP0628765A1 (fr) * 1993-04-15 1994-12-14 Valeo Vision Projecteur du genre elliptique pour véhicule automobile
EP1426675A3 (fr) * 2002-12-02 2006-11-02 Ichikoh Industries, Ltd. Projecteur de véhicule, réflecteur pour projecteur de véhicule, programme d'ordinateur pour la conception de ce réflecteur
US7188982B2 (en) 2002-12-02 2007-03-13 Ichikoh Industries, Ltd. Vehicle headlamp, reflector for the vehicle headlamp, computer program for designing the reflector

Also Published As

Publication number Publication date
AU3857685A (en) 1985-08-29
ES284366U (es) 1985-08-01
EP0153485A3 (fr) 1987-10-14
ES284366Y (es) 1986-04-16
DD232337A5 (de) 1986-01-22
DE3406876C1 (de) 1985-07-18
JPS60216402A (ja) 1985-10-29

Similar Documents

Publication Publication Date Title
DE19704467B4 (de) Fahrzeug-Scheinwerfer
DE3932273C2 (de) Fahrzeugscheinwerfer mit einem Reflektor mit mehrteilig augebildeter Reflexionsfläche
DE4315393C2 (de) Kraftfahrzeugscheinwerfer mit einem Reflektor und einer Streulinse
DE3218702C2 (de) Fahrzeugscheinwerfer
EP0210406B1 (fr) Phare pour véhicule
DE3937195C2 (de) Kraftfahrzeugscheinwerfer mit einem konkaven Mehrflächenreflektor
DE4229728C1 (de) Kraftfahrzeugscheinwerfer mit wenigstens zwei Reflektoren
EP0153485A2 (fr) Projecteur non-éblouissant pour véhicules
DE2921068C2 (de) Fahrzeugscheinwerfer
EP0094519A2 (fr) Projecteur non-éblouissant pour véhicule
DE2453234B2 (de) Fahrzeugleuchte
DE10022977B4 (de) Bifunktions-Ellipsoidscheinwerfer für Kraftfahrzeuge
DE4212892C2 (de) Linsensystem für eine Lichtscheibe einer Kraftfahrzeugheckleuchte
DE69303075T2 (de) Kraftfahrzeugscheinwerfer nach dem Projektionsprinzip
DE4329850A1 (de) Rechteckiger Reflektor für Fahrzeugscheinwerfer
DE4112988C2 (de) Kraftfahrzeugscheinwerfer für Abblendlicht
DE4010830C2 (de) Kraftfahrzeugscheinwerfer für Abblendlicht
DE4020080C2 (de) Reflektor als Bestandteil eines Kraftfahrzeugfernlichtscheinwerfers
DE3742191C2 (fr)
DE3036987C2 (de) Streuscheibe für einen Scheinwerfer für Kraftfahrzeuge
DE3933411C2 (fr)
DE2738622C2 (fr)
EP4545845B1 (fr) Dispositif d'éclairage pour un phare de véhicule automobile et phare de véhicule automobile
DE3208741C2 (fr)
DE3531955C2 (fr)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): FR GB IT NL SE

17P Request for examination filed

Effective date: 19860210

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HELLA KG HUECK & CO.

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): FR GB IT NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19890704

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ROEHLING, WILHELM