EP0094518A2 - Projecteur pour véhicule - Google Patents

Projecteur pour véhicule Download PDF

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Publication number
EP0094518A2
EP0094518A2 EP83103843A EP83103843A EP0094518A2 EP 0094518 A2 EP0094518 A2 EP 0094518A2 EP 83103843 A EP83103843 A EP 83103843A EP 83103843 A EP83103843 A EP 83103843A EP 0094518 A2 EP0094518 A2 EP 0094518A2
Authority
EP
European Patent Office
Prior art keywords
reflector
ellipse
axial longitudinal
longitudinal section
vehicle headlight
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.)
Granted
Application number
EP83103843A
Other languages
German (de)
English (en)
Other versions
EP0094518B1 (fr
EP0094518A3 (en
Inventor
Hans-Otto Dr. Ernst
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
Priority to AT83103843T priority Critical patent/ATE28693T1/de
Publication of EP0094518A2 publication Critical patent/EP0094518A2/fr
Publication of EP0094518A3 publication Critical patent/EP0094518A3/de
Application granted granted Critical
Publication of EP0094518B1 publication Critical patent/EP0094518B1/fr
Expired legal-status Critical Current

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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
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature

Definitions

  • the invention relates to a vehicle headlight with a cup-shaped reflector, the inner reflection surface of which forms an ellipse section in the axial longitudinal sections, the eccentricity of which increases from the vertical axial longitudinal section to the horizontal axial longitudinal section.
  • Such reflectors are used in headlights that work on the projector principle.
  • Such a headlight is described in DE-OS 24 46 521.
  • a reflector is used, the reflecting surface of which, in the vertical axial section, represents an ellipse section, the inner focal point of which is designated by F and the outer focal point of which is the diaphragm which is referred to as a screen.
  • the outer focal point of this ellipse section also forms the focal plane of the lens body arranged in front of the reflector.
  • the reflection surface has a different shape, which can also be elliptical, among other things. The description only says that this other shape or elliptical shape is designed so that the light reflected by the reflector is scattered more horizontally than vertically. It can be seen from FIG.
  • the light is strongly concentrated in the vertical direction and more scattered in the horizontal direction, but the scatter in the horizontal direction is uncontrolled and very strong, since the filament is arranged between the two focal points of the ellipse resulting in the horizontal axial section.
  • the object of the invention is to provide a headlight which, as in the aforementioned prior publication, bundles the light strongly in the vertical direction and scatters it in the horizontal direction, but also the light reflected from the lateral regions of the reflector is concentrated so that it is still is captured by a relatively small, spaced lens in front of the reflector.
  • This object is achieved according to the invention in that the focal points of the ellipse sections of all axial sections and their associated vertices of the ellipse sections are each congruent.
  • the outer edge runs in one plane. This means that the largest possible reflection surface is not used without an undercut being produced in the main light exit direction, which is also the demoulding direction of the reflector produced by injection or casting from the tool.
  • the reflector depth in the axial longitudinal sections of the reflector full length of the longer semiaxis of the respective ellipses.
  • the outer edge of the reflector according to the invention runs at different heights and is therefore no longer suitable as an attachment location for the fastening means of the reflector, it is further proposed to form a recessed edge on the outer edge which carries the fastening means. This gives the possibility that the fastening means, if necessary, lie in one plane. According to a further feature of the invention, these fastening means can be designed as a radially projecting fastening flange.
  • Figure 3 shows a horizontal axial longitudinal section through the headlight system, in which the vertical longitudinal section is drawn in dash-dotted lines.
  • the semi-ellipse 1 shows the curve of the reflector 3 in the horizontal central longitudinal section
  • the semi-ellipse 2 shows the curve of the reflector 3 in the vertical central longitudinal section. It becomes clear that both ellipses 1 and 2 have the same apex 4 and the same focal point 5 and differ only in the eccentricity e.
  • the eccentricity e is defined by the following formula:
  • a is the longer semiaxis and b is the shorter semiaxis of the respective ellipse.
  • Each axial longitudinal section through the reflector 3 results in a semi-ellipse for the reflection surface 6.
  • the eccentricity e of this semi-ellipses is increased from the vertical axial longitudinal section to the horizontal axial longitudinal section, in such a way that the reflector is viewed from the front, in turn, 'comprises an ellipse.
  • the depth of the reflector increases from the vertical axial longitudinal section to the horizontal axial longitudinal section.
  • the outer edge 7 of the reflector assumes such a curve shape that each axial longitudinal section has a semi-ellipse with the full semi-axes a and b.
  • This results in a reflector 3 which gives the greatest possible proportion of reflected light without the reflector 3 having an 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 outer edge 7 of the reflector merges into a recessed outer edge 8, which has a radially outwardly projecting fastening edge 9.
  • This configuration has the advantage that the fastening means, as in this case the fastening flange, can also be flat in the case of the curved outer edge of the reflector without it having to be integrally formed on the outer wall of the reflector having the reflection surface 6. The latter would result in material accumulation and thus sink marks. These sink marks would adversely affect the quality of the reflective surface.
  • the operating diagram of the headlight is shown in FIG.
  • a diaphragm 11 is arranged, the essentially horizontal edge of which creates the light-dark boundary.
  • the flat surface of the lens 13 is arranged, which lies with its focal plane in the ellipse focal point 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
EP83103843A 1982-05-18 1983-04-20 Projecteur pour véhicule Expired EP0094518B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83103843T ATE28693T1 (de) 1982-05-18 1983-04-20 Fahrzeugscheinwerfer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3218702A DE3218702C2 (de) 1982-05-18 1982-05-18 Fahrzeugscheinwerfer
DE3218702 1982-05-18

Publications (3)

Publication Number Publication Date
EP0094518A2 true EP0094518A2 (fr) 1983-11-23
EP0094518A3 EP0094518A3 (en) 1984-11-28
EP0094518B1 EP0094518B1 (fr) 1987-07-29

Family

ID=6163937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103843A Expired EP0094518B1 (fr) 1982-05-18 1983-04-20 Projecteur pour véhicule

Country Status (8)

Country Link
US (1) US4511955A (fr)
EP (1) EP0094518B1 (fr)
JP (1) JPS58209801A (fr)
AT (1) ATE28693T1 (fr)
AU (1) AU555321B2 (fr)
DD (1) DD209889A5 (fr)
DE (1) DE3218702C2 (fr)
ES (1) ES279982Y (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269975A3 (en) * 1986-11-29 1989-04-05 Stanley Electric Co., Ltd. Headlamp for vehicle
EP0426397A1 (fr) * 1989-11-01 1991-05-08 Hewlett-Packard Company Réflecteur asymétrique pour LED
CN109681843A (zh) * 2019-02-26 2019-04-26 华域视觉科技(上海)有限公司 车灯模组及应用其的汽车

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334459C2 (de) * 1983-09-23 1993-10-21 Bosch Gmbh Robert Reflektor für einen Abblendlichtscheinwerfer für Kraftfahrzeuge
DE3406876C1 (de) * 1984-02-25 1985-07-18 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Abgeblendeter Fahrzeugscheinwerfer
DE3535249C2 (de) * 1984-10-18 1987-03-12 Hella KG Hueck & Co, 4780 Lippstadt Abgeblendeter Fahrzeugscheinwerfer
US4825343A (en) * 1985-12-27 1989-04-25 Ichikoh Industries Limited Projector type headlamp for vehicles
JPS63304501A (ja) * 1987-06-04 1988-12-12 日産自動車株式会社 プロジェクタ型の自動車用前照灯
JPH033921Y2 (fr) * 1987-08-19 1991-01-31
JPS6471001A (en) * 1987-09-10 1989-03-16 Koito Mfg Co Ltd Head light of vehicle
JPS6486401A (en) * 1987-09-29 1989-03-31 Koito Mfg Co Ltd Head light of vehicle
JPH01115001A (ja) * 1987-10-28 1989-05-08 Koito Mfg Co Ltd 車輌用前照灯
JPH01120702A (ja) * 1987-11-05 1989-05-12 Koito Mfg Co Ltd 車輌用前照灯
JPH01232602A (ja) * 1988-03-11 1989-09-18 Koito Mfg Co Ltd 自動車用前照灯
JPH0673241B2 (ja) * 1988-04-04 1994-09-14 株式会社小糸製作所 車輌用前照灯
JPH0762961B2 (ja) * 1988-04-08 1995-07-05 株式会社小糸製作所 車輌用前照灯
DE8809051U1 (de) * 1988-07-14 1988-09-01 Hella KG Hueck & Co, 4780 Lippstadt Signalleuchte
US5791771A (en) * 1995-12-19 1998-08-11 United Parcel Service Of America, Inc. Unsymmetrical elliptical reflector for spatial illumination
JP3745960B2 (ja) 1997-11-28 2006-02-15 株式会社ジェイエスピー 発泡ブロー成形品及びその製造方法
DE60139525D1 (de) 2000-04-25 2009-09-24 Ichikoh Industries Ltd Scheinwerfersystem für Fahrzeuge
CN109519865B (zh) * 2019-01-03 2024-01-26 华域视觉科技(上海)有限公司 增加光型宽度的方法、装置、模组单元、车灯及汽车

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1480364A (en) * 1924-01-08 Reflector
GB173243A (en) * 1920-06-23 1921-12-23 Duncan James Ritchie Improvements in lamps
US1598044A (en) * 1920-12-20 1926-08-31 Evan P Bone Headlamp
US1539696A (en) * 1921-06-16 1925-05-26 Ritchie Duncan James Lamp
GB320693A (en) * 1929-04-08 1929-10-24 Sidney Philip Holloway An improvement in glare free headlamps for motor cars, lorries and similar vehicles
US1898167A (en) * 1930-05-06 1933-02-21 Ivan L Bean Reflector
US1898166A (en) * 1930-05-06 1933-02-21 Ivan L Bean Reflector
US3191023A (en) * 1963-05-17 1965-06-22 Corning Glass Works Lighting device for dental and surgical procedures
FR1379081A (fr) * 1963-10-11 1964-11-20 Projecteur perfectionné à face frontale d'ouverture sensiblement rectangulaire, notamment pour véhicules automobiles
US3492474A (en) * 1966-12-02 1970-01-27 Koito Mfg Co Ltd Reflector with compound curvature reflecting surface
US3745325A (en) * 1971-08-17 1973-07-10 Eastman Kodak Co Photographic light
US3922073A (en) * 1973-04-25 1975-11-25 Robert A D Schwartz Light diffuser system
GB1476297A (en) * 1973-09-29 1977-06-10 Lucas Electrical Ltd Motor vehicle lamp assemblies
NL7605528A (nl) * 1976-05-24 1977-11-28 Philips Nv Aanvliegverlichtingsinrichting.
US4149229A (en) * 1976-06-18 1979-04-10 Lucas Industries Limited Lamp reflector with downwardly-facing step
DE2720956C2 (de) * 1977-05-10 1982-12-02 Bayerische Motoren Werke AG, 8000 München Kraftfahrzeug-Scheinwerfer für Abblend- und Fernlicht
US4149227A (en) * 1977-06-20 1979-04-10 Corning Glass Works Reflector
FR2459938B1 (fr) * 1979-06-22 1985-11-08 Marchal Equip Auto Projecteur d'eclairage pour vehicule automobile
DE2940249C2 (de) * 1979-10-04 1986-03-06 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Scheinwerfer, insbesondere Kraftfahrzeugscheinwerfer mit einem Kunststoffreflektor
DE3069386D1 (en) * 1979-12-22 1984-11-08 Lucas Ind Plc Motor vehicle lamp reflector
DE3125267A1 (de) * 1981-06-26 1983-01-13 Patra Patent Treuhand Halogenellipsoidreflektorlampe mit kaltlichtreflektor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269975A3 (en) * 1986-11-29 1989-04-05 Stanley Electric Co., Ltd. Headlamp for vehicle
EP0426397A1 (fr) * 1989-11-01 1991-05-08 Hewlett-Packard Company Réflecteur asymétrique pour LED
CN109681843A (zh) * 2019-02-26 2019-04-26 华域视觉科技(上海)有限公司 车灯模组及应用其的汽车

Also Published As

Publication number Publication date
US4511955A (en) 1985-04-16
ES279982Y (es) 1985-06-16
DE3218702A1 (de) 1983-11-24
EP0094518B1 (fr) 1987-07-29
ES279982U (es) 1984-12-16
AU1448883A (en) 1983-11-24
ATE28693T1 (de) 1987-08-15
JPS58209801A (ja) 1983-12-06
DE3218702C2 (de) 1987-01-29
DD209889A5 (de) 1984-05-23
EP0094518A3 (en) 1984-11-28
AU555321B2 (en) 1986-09-18

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