EP0485818A1 - Projecteur - Google Patents

Projecteur Download PDF

Info

Publication number
EP0485818A1
EP0485818A1 EP91118675A EP91118675A EP0485818A1 EP 0485818 A1 EP0485818 A1 EP 0485818A1 EP 91118675 A EP91118675 A EP 91118675A EP 91118675 A EP91118675 A EP 91118675A EP 0485818 A1 EP0485818 A1 EP 0485818A1
Authority
EP
European Patent Office
Prior art keywords
light
headlight
lens
light source
headlight according
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
EP91118675A
Other languages
German (de)
English (en)
Other versions
EP0485818B1 (fr
Inventor
Edwin Schwaller
Diego Bally
Walter Zürcher
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.)
Bisy Bike-Systems Industrielle Fertigung Von Fahrr
Original Assignee
Vereinigte Drahtwerke AG
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 Vereinigte Drahtwerke AG filed Critical Vereinigte Drahtwerke AG
Publication of EP0485818A1 publication Critical patent/EP0485818A1/fr
Application granted granted Critical
Publication of EP0485818B1 publication Critical patent/EP0485818B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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

Definitions

  • the invention relates to a headlamp with a light source arranged in the headlamp axis, with a reflector and with a lens arranged in front of the light source, and in particular with a headlamp for relatively weak light sources, such as are present in bicycle lighting systems.
  • the light generated can be used in an optimal manner.
  • the smallest possible part of it should be lost as stray light.
  • the light of the first origin can be deflected relatively well in the desired direction by the diffusing lens optics in order to generate a corresponding light cone. With the light coming directly from the light source onto the lens, the problem arises that the beam path has to be deflected relatively strongly, for which purpose a collecting lens must be provided on the lens.
  • the converging lens is intended to capture as large a solid angle as possible of the directly emitted light, without, however, taking up too large an area of the lens.
  • it has already been proposed to cement a relatively thick converging lens on the inside of the lens, which bundles the direct light from the light source.
  • this solution is complex in terms of production technology.
  • the lens is curved inwards, a much larger solid angle of the direct light can be used, whereby the collecting lens structure, which is preferably designed as a Fresnel lens, does not require a significant local thickening of the lens, which could not be controlled during manufacture.
  • the spreading disc designed in this way can therefore be efficiently produced in a conventional manner as a one-piece molded part made of plastic or Olas.
  • the scattered light which is still reduced, is advantageously used to produce a laterally visible, illuminated zone on the headlamp, for which purpose a transparent ring is formed on the periphery of the lens, through which false light radially emerges.
  • the headlight has a light source 1, which is preferably is designed as a halogen lamp.
  • the light source is drawn in a dot shape in FIG. 1, but is actually designed as a spiral.
  • the light source is arranged in the focal point of a parabolically or elliptically shaped reflector 2.
  • the light rays striking the reflector 2 from the light source are therefore reflected approximately parallel to the headlight axis 3 and thus strike a diffusing screen 4.
  • the diffusing screen 4 is formed from a translucent material, for example a transparent plastic such as PMMA. Their shape essentially determines the beam path of the headlamp.
  • the lens 4 is divided into different zones.
  • a central zone 5 is provided for deflecting the light coming directly from the light source 1.
  • the outer peripheral zones 6, 7, 8 are divided into an upper zone 6, a central zone 7 and a lower zone 8 (see FIG. 2) and serve to deflect the light reflected in parallel by the reflector 2.
  • the lens 4 is curved toward the light source 1. This has the effect that the central zone 5 is close to the light source 1 and thus detects a relatively large solid angle of the directly emitted light from the light source.
  • the light incident on the lens at this solid angle is collected by means of a converging lens structure to form a light bundle 10 which is emitted essentially in the direction of the headlight axis 3.
  • the converging lens structure in the central zone 5 is designed as a Fresnel lens 9 arranged concentrically to the axis 3, so that the thickness of the lens 4 remains relatively uniform. This is an important prerequisite for their manufacture as plastic molded articles.
  • the lens in the central zone 5 forms a fourth-order curve in vertical section, which means that the rays that pass through this central zone 5 are deflected somewhat more strongly, ie towards the axis 3, than the deeper rays that pass through Axis direction 3 run (see FIG. 1).
  • the cone of light falling obliquely onto the street or other surface leads to a light spot of essentially constant brightness.
  • the brightness in the light spot generated by the obliquely incident light cone does not decrease with increasing distance from the headlight.
  • a corresponding configuration of the lens is present in the edge zones 6, 7, 8 already mentioned, of which only the upper zone 6 and the lower zone 8 are visible in FIG. 1.
  • the diffusing screen forms a fourth-order curve with a correspondingly greater deflection of the higher-passing rays.
  • the light bundles 11 and 12 from these zones 6, 8 also lead to a light spot with a regular light distribution on a base in the case of oblique incidence.
  • These zones are viewed in a horizontal section (cf. FIGS. 2 and 3), they have a scattering lens structure 14 of a type known per se, which, according to FIG. 3, leads to a lateral divergence of the light cone.
  • the edge zone 7 has the same configuration.
  • the headlight designed in this way is used as a bicycle lamp, it produces an essentially trapezoidal light spot of uniform brightness on the street at a distance of 4 m to 10 m from the lamp position. Since the direct light of the solid angle detected by the central zone 5 contributes to this, the luminous efficacy can be significantly improved.
  • the transparent ring 15 preferably has a signal color, so that it appears in a side view as a streak glowing in the signal color occurs (see Figure 4).
  • the scattered light from the headlight contributes to the lateral marking of, for example, a cyclist at night, which is otherwise often only possible with passive reflectors.
  • the transparent ring 15 can also be designed as a mounting element for connecting the reflector 2 and the diffuser 4.
  • Figure 4 shows a possible embodiment of the described headlamp as a bicycle lamp.
  • the headlight with signal ring 15 and reflector 2 is arranged on a housing 16.
  • FIG. 5 shows a somewhat modified configuration of the diffusing screen 4. As can be seen, this differs from the embodiment according to FIG. 1 only in that the central zone 5 itself forms a bulge against the light source 1. It can be achieved that the detected solid angle of the direct light is further increased.
  • the described headlight can also be provided with a reflector ring 16 directed forward. Should the light source 1 or its supply fail, this serves to make the bike recognizable for oncoming traffic at night.
  • the reflector ring 16 made of transparent plexiglass has a back 17 with a reflector structure. It is welded to a ring made of transparent red plexiglass designed as a signal ring 15, through which stray light can escape laterally in the manner described. The whole can be designed as a snap ring for mounting the lens 4 on the reflector 2.
  • the headlamp according to the invention is an integrated, active and passive effective, visual identification in traffic.
  • the described headlamp allows light sources with relatively low power, such as those used in bicycle light systems, to be used optimally for light generation by the false light losses are reduced and the light is emitted in an optimal manner, so that an extensive light spot with even light distribution is generated in front of the bicycle on the street.
  • the components, in particular the diffusing screen, can be produced as molded parts in efficient processes.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
EP91118675A 1990-11-12 1991-11-01 Projecteur Expired - Lifetime EP0485818B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3577/90A CH681478A5 (fr) 1990-11-12 1990-11-12
CH3577/90 1990-11-20

Publications (2)

Publication Number Publication Date
EP0485818A1 true EP0485818A1 (fr) 1992-05-20
EP0485818B1 EP0485818B1 (fr) 1994-06-22

Family

ID=4258992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118675A Expired - Lifetime EP0485818B1 (fr) 1990-11-12 1991-11-01 Projecteur

Country Status (8)

Country Link
US (1) US5245515A (fr)
EP (1) EP0485818B1 (fr)
JP (1) JPH04284301A (fr)
AT (1) ATE107755T1 (fr)
CH (1) CH681478A5 (fr)
DE (1) DE59102003D1 (fr)
DK (1) DK0485818T3 (fr)
TW (1) TW203584B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745365A1 (fr) * 1996-02-23 1997-08-29 Valeo Vision Feu de signalisation a moyens perfectionnes d'etalement de la lumiere
DE102022124330A1 (de) * 2022-09-22 2024-03-28 Ledlenser GmbH & Co. KG Leuchteinheit und Leuchte

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11194189A (ja) * 1997-10-13 1999-07-21 Mitsubishi Materials Corp 耐食性およびクリープ特性にすぐれた原子炉燃料被覆管用Ｚｒ合金管の製造方法
CN1125940C (zh) * 1998-01-26 2003-10-29 比松运动照明有限公司 改进的手电筒
US6354715B1 (en) 1998-01-26 2002-03-12 Bison Sportslights, Inc. Flashlight
EP1055869A3 (fr) * 1999-05-28 2002-03-06 Corning Incorporated Lentille en verre pour véhicule automobile
US6554456B1 (en) * 2000-05-05 2003-04-29 Advanced Lighting Technologies, Inc. Efficient directional lighting system
AT500415B8 (de) * 2001-03-13 2007-02-15 Zizala Lichtsysteme Gmbh Fahrzeugscheinwerfer
US20040264201A1 (en) * 2003-06-30 2004-12-30 Guide Corporation, A Delaware Corporation Chromatic effect using light sources and condensing lenses
JP2005251435A (ja) * 2004-03-01 2005-09-15 Koito Mfg Co Ltd 車両用前照灯
BR112013018136A2 (pt) * 2011-01-19 2016-11-08 Koninkl Philips Nv dispositivo de iluminação e luminária
DE102011113627B4 (de) 2011-09-16 2020-12-17 Volkswagen Aktiengesellschaft Lichtscheibe für eine Fahrzeugleuchte und Fahrzeugleute mit einer solchen Lichtscheibe
DE102011116028A1 (de) * 2011-10-17 2013-04-18 Busch & Müller KG Scheinwerfer mit prismatischer Linse
CN103322513B (zh) * 2012-03-23 2015-08-12 大连工业大学 用于led产生环形光斑的混合式折反射器及其使用方法
DE102012102732B4 (de) * 2012-03-29 2015-12-31 Siteco Beleuchtungstechnik Gmbh Leuchte mit Lichtabstrahlung in einen Randbereich
CN102874349A (zh) * 2012-09-27 2013-01-16 力帆实业(集团)股份有限公司 摩托车前照灯壳组件
CN103017039B (zh) * 2012-12-16 2015-01-28 广州市佛达信号设备有限公司 一种led警示灯
JP6048842B2 (ja) * 2014-03-17 2016-12-21 パナソニックＩｐマネジメント株式会社 照明器具
JP2017074820A (ja) * 2015-10-13 2017-04-20 スズキ株式会社 車両の報知システム
DE202018002106U1 (de) * 2018-04-25 2019-07-29 Büchel GmbH & Co.Fahrzeugteilefabrik KG Scheinwerfer mit Zeichen, insbesondere Logo
CN111197726A (zh) * 2018-11-20 2020-05-26 常州星宇车灯股份有限公司 一种全反射式厚壁聚光器和照明装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB120581A (en) * 1917-11-05 1919-02-13 Joseph Phillips Ogden Improvements in Glasses or Lenses for Headlights.
US1571139A (en) * 1923-12-01 1926-01-26 James G Nolen Refractor
US1674460A (en) * 1925-10-24 1928-06-19 William H Zorger Automobile headlight lens
DE1101985B (de) * 1958-07-22 1961-03-09 Westfaelische Metall Ind K G H Mit einem Rueckstrahler vereinigte Leuchte fuer Kraftfahrzeuge
DE1472525A1 (de) * 1965-12-09 1969-01-23 Peter Nawrath Decken-,Strassen- und Werkplatzleuchte
US4213171A (en) * 1976-06-24 1980-07-15 Sassmannshausen Knut Lighting fixture with side escape window
DE3143086A1 (de) * 1980-10-31 1982-08-19 Saßmannshausen, Knut Otto, 6580 Idar-Oberstein "hohlspiegelleuchte"
DE3317519A1 (de) * 1983-05-13 1984-11-15 Robert Bosch Gmbh, 7000 Stuttgart Lichtsammelplatte

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US120581A (en) * 1871-11-07 Improvement in plow-wheels
US1433292A (en) * 1917-09-29 1922-10-24 Charles G Myers Light concentrator and projector
US1788935A (en) * 1926-06-30 1931-01-13 William H Wood Vehicle headlight
US3235720A (en) * 1963-08-13 1966-02-15 L D Bridge Company Inc Vehicle light assembly
US3244869A (en) * 1964-03-23 1966-04-05 Dominion Auto Access Vehicle lamp
IT1160893B (it) * 1978-10-30 1987-03-11 Iao Industrie Riunite Spa Fanale per autoveicoli
EP0097449B1 (fr) * 1982-06-19 1986-04-09 Britax Vega Limited Feu pour véhicule
EP0098062B1 (fr) * 1982-06-24 1986-04-09 Britax Vega Limited Feu pour véhicule

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB120581A (en) * 1917-11-05 1919-02-13 Joseph Phillips Ogden Improvements in Glasses or Lenses for Headlights.
US1571139A (en) * 1923-12-01 1926-01-26 James G Nolen Refractor
US1674460A (en) * 1925-10-24 1928-06-19 William H Zorger Automobile headlight lens
DE1101985B (de) * 1958-07-22 1961-03-09 Westfaelische Metall Ind K G H Mit einem Rueckstrahler vereinigte Leuchte fuer Kraftfahrzeuge
DE1472525A1 (de) * 1965-12-09 1969-01-23 Peter Nawrath Decken-,Strassen- und Werkplatzleuchte
US4213171A (en) * 1976-06-24 1980-07-15 Sassmannshausen Knut Lighting fixture with side escape window
DE3143086A1 (de) * 1980-10-31 1982-08-19 Saßmannshausen, Knut Otto, 6580 Idar-Oberstein "hohlspiegelleuchte"
DE3317519A1 (de) * 1983-05-13 1984-11-15 Robert Bosch Gmbh, 7000 Stuttgart Lichtsammelplatte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745365A1 (fr) * 1996-02-23 1997-08-29 Valeo Vision Feu de signalisation a moyens perfectionnes d'etalement de la lumiere
US5945916A (en) * 1996-02-23 1999-08-31 Valeo Vision Indicator light with improved light spreading means
DE102022124330A1 (de) * 2022-09-22 2024-03-28 Ledlenser GmbH & Co. KG Leuchteinheit und Leuchte

Also Published As

Publication number Publication date
DK0485818T3 (da) 1994-09-26
TW203584B (fr) 1993-04-11
JPH04284301A (ja) 1992-10-08
EP0485818B1 (fr) 1994-06-22
DE59102003D1 (de) 1994-07-28
US5245515A (en) 1993-09-14
CH681478A5 (fr) 1993-03-31
ATE107755T1 (de) 1994-07-15

Similar Documents

Publication Publication Date Title
EP0485818B1 (fr) Projecteur
EP0890785B1 (fr) Projecteur de véhicule
DE19814480A1 (de) Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip
DE69326611T2 (de) Vorrichtung zur verhinderung eines pseudo-leuchtphänomens in einer signallampe
DE19853402A1 (de) Scheinwerfer mit hyperbolischem Reflektor und Scheinwerfereinsatz mit einem solchen Scheinwerfer
DE19814479A1 (de) Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip
DE2908453C2 (de) Farbiges Licht abgebende Signalleuchte, insbesondere für Fahrzeuge
DE29912504U1 (de) Scheinwerfer für Fahrzeuge
DE6920060U (de) Leuchte, insbesondere rueck-oder sicherungsleuchte
DE602004012797T2 (de) Beleuchtungs- oder Signalisierungssystem für Fahrzeuge
DE19632189A1 (de) Scheinwerfer für Fahrzeuge
DE102013210257A1 (de) Vorsatzoptik für eine Lichtquelle
DE69900437T2 (de) Kraftfahrzeugleuchte
DE19856281B4 (de) Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip
DE19841557A1 (de) Scheinwerfer für Fahrzeuge
DE602004002016T2 (de) Kfz-Scheinwerfer, der erhöht angeordnete Verkehrszeichen beleuchten kann
DE2628243A1 (de) Leuchte, insbesondere rueck-, sicherungs- oder signalleuchte
EP3385609A1 (fr) Module d'éclairage pour phare de véhicule automobile
DE19814478A1 (de) Scheinwerfer für Fahrzeuge
DE2940866A1 (de) Fahrzeugleuchte
EP3719391B1 (fr) Module de feu de route partiel pour un phare de véhicule automobile
DE2646930A1 (de) Leuchte, insbesondere rueck-, sicherungs- oder signalleuchte
DE2206315A1 (de) Scheinwerfer
DE3143086A1 (de) "hohlspiegelleuchte"
DE202022106756U1 (de) Leuchte

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

Kind code of ref document: A1

Designated state(s): AT DE DK FR GB IT NL SE

17P Request for examination filed

Effective date: 19921014

17Q First examination report despatched

Effective date: 19930114

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE DK FR GB IT NL SE

REF Corresponds to:

Ref document number: 107755

Country of ref document: AT

Date of ref document: 19940715

Kind code of ref document: T

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940622

REF Corresponds to:

Ref document number: 59102003

Country of ref document: DE

Date of ref document: 19940728

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

EAL Se: european patent in force in sweden

Ref document number: 91118675.7

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

NLS Nl: assignments of ep-patents

Owner name: BISY BIKE-SYSTEMS INDUSTRIELLE FERTIGUNG VON FAHRR

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19961007

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19961023

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19961025

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19961127

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19961128

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19961129

Year of fee payment: 6

Ref country code: DK

Payment date: 19961129

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971101

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19971130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980601

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19971101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980801

EUG Se: european patent has lapsed

Ref document number: 91118675.7

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19980601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051101