EP0756131A1 - Fahrzeugbeleuchtungsvorrichtung - Google Patents

Fahrzeugbeleuchtungsvorrichtung Download PDF

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Publication number
EP0756131A1
EP0756131A1 EP96112128A EP96112128A EP0756131A1 EP 0756131 A1 EP0756131 A1 EP 0756131A1 EP 96112128 A EP96112128 A EP 96112128A EP 96112128 A EP96112128 A EP 96112128A EP 0756131 A1 EP0756131 A1 EP 0756131A1
Authority
EP
European Patent Office
Prior art keywords
lighting device
coating
lens
face
light
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Withdrawn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
EP96112128A
Other languages
English (en)
French (fr)
Inventor
Iordanka Neytcheva
Luciano Elia
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.)
Marelli Europe SpA
Original Assignee
Magneti Marelli SpA
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 Magneti Marelli SpA filed Critical Magneti Marelli SpA
Publication of EP0756131A1 publication Critical patent/EP0756131A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments 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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/125—Coloured light
    • 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
    • F21S43/255—Filters
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light

Definitions

  • the present invention relates to a vehicle lighting device, in particular a headlight or similar.
  • current vehicle lighting devices comprise a light source (bulb) for generating a light beam; a reflector having a reflecting surface which receives the light beam generated by the source and distributes it within a limited solid angle; and a transparent prismatic cover comprising a number of prismatic diffusing lenses which diffuse the light beam within a broader solid angle, in accordance with vehicle lighting regulations.
  • a light source for generating a light beam
  • a reflector having a reflecting surface which receives the light beam generated by the source and distributes it within a limited solid angle
  • a transparent prismatic cover comprising a number of prismatic diffusing lenses which diffuse the light beam within a broader solid angle, in accordance with vehicle lighting regulations.
  • the object of the present invention is therefore to provide a vehicle lighting device, particularly a headlight or similar, designed to overcome the aforementioned drawbacks.
  • a vehicle lighting device in particular a headlight or similar, comprising a light source for generating a light beam; a reflector having a reflecting surface and an aperture; and at least one lens for covering said aperture and distributing said light beam in space; characterized by comprising a coating on at least one face of said cover lens and/or on said reflecting surface; said coating at least partially reflecting and/or absorbing external and/or internal light rays incident on the coating.
  • Number 1 in Figure 1 indicates a lighting device comprising a light source (bulb) 2; and a reflector 3 presenting a parabolic or complex reflecting surface 3a, housing light source 2 at its focal point, and defining an aperture 6 covered by a clear lens 4.
  • the outer face 4b of lens 4 presents a coating 5 for at least partially reflecting and/or absorbing the light rays incident on it.
  • coating 5 comprises a thin film of dielectric material, metal or metal oxide.
  • possible metals include aluminium and chromium
  • possible oxides include aluminium and chromium oxide
  • possible dielectric materials include germanium oxide, silicon oxide and zinc sulphide.
  • coating 5 comprises a single layer, and acts as a semitransparent mirror for reflecting and/or absorbing some of the external light rays directed inwards of lighting device 1 and some of the internal light rays generated by light source 2 and directed outwards of lighting device 1.
  • Figure 2 shows a variation of lighting device 1, wherein the coating, here indicated by 7, is formed on the inner surface 4a of lens 4, and comprises a number of layers 8 of different refraction indexes and a thickness of the order of the wavelength of the incident light.
  • Coating 7 in this case provides for two functions: on the one hand, it acts as a semitransparent mirror, as described with reference to Figure 1, to conceal the inside of device 1 when viewed from the outside; and, on the other, it acts as a selective interferential filter for filtering the light transmitted and/or reflected and/or absorbed externally of device 1, i.e. presents different reflection, transmission and absorption indexes for the different wavelengths of the incident light.
  • each layer 8 is an even whole multiple of half the wavelength of the light, constructive interference exists between the incident and reflected light and the total intensity of the light beam increases. Conversely, if the thickness of the dielectric is not a whole multiple of half the wavelength of the light, destructive interference exists and the total intensity of the light beam is reduced, even to the extent of being suppressed entirely if the thickness of the dielectric is an odd whole multiple of half the wavelength of the light.
  • a monochromic colour e.g. blue
  • a composite colour e.g. cyan
  • coating 5 or 7 is preferably only reflective and/or absorbent and/or transparent for a given range of wavelengths, or is nonreflective for all or a given range of wavelengths.
  • Coating 5 or 7 is deposited relatively easily and provides for optically as opposed to mechanically masking the inside of the headlight, thus reducing cost by eliminating the concealing walls.
  • the headlight may differ in colour from the externally visible light, thus conforming with regulations governing the colour of the emitted light, while at the same time satisfying increasing demand for special colour designs, and also enabling saving by eliminating the use of expensive high-contrast lenses.
  • coating 5 or 7 may be deposited indifferently on inner face 4a or outer face 4b of lens 4, or on reflecting surface 3a of reflector 3.
  • the single-layer (coating 5) or multilayer (coating 7) solution is used depends on the desired colour characteristics, so that the multilayer solution (coating 7) may also be applied to the outer face of lens 4 or to reflecting surface 3a, and the single-layer solution (coating 5) may also be applied to the inner face 4a of lens 4 or to reflecting surface 3a.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP96112128A 1995-07-28 1996-07-26 Fahrzeugbeleuchtungsvorrichtung Withdrawn EP0756131A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95TO000640A IT1280879B1 (it) 1995-07-28 1995-07-28 Dispositivo di illuminazione per autoveicoli.
ITTO950640 1995-07-28

Publications (1)

Publication Number Publication Date
EP0756131A1 true EP0756131A1 (de) 1997-01-29

Family

ID=11413758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112128A Withdrawn EP0756131A1 (de) 1995-07-28 1996-07-26 Fahrzeugbeleuchtungsvorrichtung

Country Status (2)

Country Link
EP (1) EP0756131A1 (de)
IT (1) IT1280879B1 (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0969245A3 (de) * 1998-07-01 2001-10-17 Volkswagen Aktiengesellschaft Scheinwerferanordnung für ein Kraftfahrzeug
FR2852380A1 (fr) * 2003-03-14 2004-09-17 Valeo Vision Glace pour dispositif d'eclairage et/ou de signalisation du type projecteur pour vehicule automobile
EP1104870A3 (de) * 1999-12-03 2005-05-04 Schott Ag Gegenstand zum Transmittieren von Licht
WO2009033862A1 (de) 2007-09-10 2009-03-19 Robert Bosch Gmbh Scheinwerfer für fahrzeuge
CN103527959A (zh) * 2013-10-30 2014-01-22 杨进 一种led筒灯
WO2014056988A1 (en) * 2012-10-10 2014-04-17 Osram Gmbh Illuminating device
DE102012023264A1 (de) 2012-11-29 2014-06-05 Auer Lighting Gmbh Frontscheinwerfer und Weißlichtlampe
AT15122U1 (de) * 2014-08-04 2017-01-15 Brilliant Ag Elektrische Leuchte
EP3182192A1 (de) * 2015-12-18 2017-06-21 Stanley Electric Co., Ltd. Halbspiegel, verfahren zur herstellung davon und beleuchtungseinheit damit
CN109906340A (zh) * 2016-11-10 2019-06-18 亮锐控股有限公司 Led照明单元
CN111795361A (zh) * 2018-03-13 2020-10-20 玛泽森创新有限公司 具有至少部分地可透过光的铬基反射涂层的车辆部件
WO2021043922A1 (de) * 2019-09-04 2021-03-11 Zkw Group Gmbh Verfahren zum herstellen eines semitransparenten kraftfahrzeugdesignelements
CN114353016A (zh) * 2020-10-13 2022-04-15 株式会社小糸制作所 车辆用灯具
US11346523B2 (en) 2018-03-13 2022-05-31 Motherson Innovations Company Limited Light emitting system, a design element, a rear view device, a covering device, and a body component of a vehicle
US11635186B2 (en) 2018-03-13 2023-04-25 Motherson Innovations Company Limited Polymeric substrate and a method of providing same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016371B (de) * 1954-03-15 1957-09-26 Westfaelische Metall Industrie Fremdlichtsichere Leuchte, insbesondere fuer Kraftfahrzeuge
FR2169740A1 (de) * 1972-01-31 1973-09-14 Cibie Projecteurs
DE3843522A1 (de) * 1988-12-23 1990-07-05 Daimler Benz Ag Leuchtvorrichtung, insbesondere fuer kraftfahrzeuge
EP0422815A2 (de) * 1989-10-10 1991-04-17 General Electric Company Reflektoren für Lampen
EP0448125A2 (de) * 1990-03-23 1991-09-25 Toshiba Lighting & Technology Corporation Interferenzschicht und Lampe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016371B (de) * 1954-03-15 1957-09-26 Westfaelische Metall Industrie Fremdlichtsichere Leuchte, insbesondere fuer Kraftfahrzeuge
FR2169740A1 (de) * 1972-01-31 1973-09-14 Cibie Projecteurs
DE3843522A1 (de) * 1988-12-23 1990-07-05 Daimler Benz Ag Leuchtvorrichtung, insbesondere fuer kraftfahrzeuge
EP0422815A2 (de) * 1989-10-10 1991-04-17 General Electric Company Reflektoren für Lampen
EP0448125A2 (de) * 1990-03-23 1991-09-25 Toshiba Lighting & Technology Corporation Interferenzschicht und Lampe

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0969245A3 (de) * 1998-07-01 2001-10-17 Volkswagen Aktiengesellschaft Scheinwerferanordnung für ein Kraftfahrzeug
EP1104870A3 (de) * 1999-12-03 2005-05-04 Schott Ag Gegenstand zum Transmittieren von Licht
FR2852380A1 (fr) * 2003-03-14 2004-09-17 Valeo Vision Glace pour dispositif d'eclairage et/ou de signalisation du type projecteur pour vehicule automobile
EP1460335A1 (de) * 2003-03-14 2004-09-22 Valeo Vision Lichtscheibe für eine Beleuchtungs und/oder Signalvorrichtung eines Kraftfahrzeuges
WO2009033862A1 (de) 2007-09-10 2009-03-19 Robert Bosch Gmbh Scheinwerfer für fahrzeuge
WO2014056988A1 (en) * 2012-10-10 2014-04-17 Osram Gmbh Illuminating device
DE102012023264A1 (de) 2012-11-29 2014-06-05 Auer Lighting Gmbh Frontscheinwerfer und Weißlichtlampe
CN103527959A (zh) * 2013-10-30 2014-01-22 杨进 一种led筒灯
AT15122U1 (de) * 2014-08-04 2017-01-15 Brilliant Ag Elektrische Leuchte
US20170176655A1 (en) * 2015-12-18 2017-06-22 Stanley Electric Co., Ltd. Half mirror, method for manufacturing the same and lighting unit using the same
EP3182192A1 (de) * 2015-12-18 2017-06-21 Stanley Electric Co., Ltd. Halbspiegel, verfahren zur herstellung davon und beleuchtungseinheit damit
US10429554B2 (en) 2015-12-18 2019-10-01 Stanley Electric Co., Ltd. Half mirror, method for manufacturing the same and lighting unit using the same
CN109906340A (zh) * 2016-11-10 2019-06-18 亮锐控股有限公司 Led照明单元
CN111795361A (zh) * 2018-03-13 2020-10-20 玛泽森创新有限公司 具有至少部分地可透过光的铬基反射涂层的车辆部件
EP3722661A3 (de) * 2018-03-13 2020-11-25 Motherson Innovations Company Limited Fahrzeugkomponenten mit chrombasierter reflektierender beschichtung, die zumindest teilweise lichtdurchlässig ist
US11346523B2 (en) 2018-03-13 2022-05-31 Motherson Innovations Company Limited Light emitting system, a design element, a rear view device, a covering device, and a body component of a vehicle
US11512830B2 (en) 2018-03-13 2022-11-29 Motherson Innovations Company Limited Light emitting system, a design element, a rear view device, a covering device, and a body component of a vehicle
US11635186B2 (en) 2018-03-13 2023-04-25 Motherson Innovations Company Limited Polymeric substrate and a method of providing same
WO2021043922A1 (de) * 2019-09-04 2021-03-11 Zkw Group Gmbh Verfahren zum herstellen eines semitransparenten kraftfahrzeugdesignelements
CN114353016A (zh) * 2020-10-13 2022-04-15 株式会社小糸制作所 车辆用灯具

Also Published As

Publication number Publication date
ITTO950640A1 (it) 1997-01-28
ITTO950640A0 (it) 1995-07-28
IT1280879B1 (it) 1998-02-11

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