WO2013139962A1 - Elément optique destiné à un phare de véhicule - Google Patents

Elément optique destiné à un phare de véhicule Download PDF

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Publication number
WO2013139962A1
WO2013139962A1 PCT/EP2013/056070 EP2013056070W WO2013139962A1 WO 2013139962 A1 WO2013139962 A1 WO 2013139962A1 EP 2013056070 W EP2013056070 W EP 2013056070W WO 2013139962 A1 WO2013139962 A1 WO 2013139962A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical element
facet
light
facet surfaces
edges
Prior art date
Application number
PCT/EP2013/056070
Other languages
German (de)
English (en)
Inventor
Henning Kiel
Patrick Wegener
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Priority to CN201380015645.6A priority Critical patent/CN104302966B/zh
Priority to KR1020147024450A priority patent/KR101722825B1/ko
Publication of WO2013139962A1 publication Critical patent/WO2013139962A1/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
    • F21S43/20—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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission

Definitions

  • the present invention relates to an optical element for a vehicle lamp with a light input surface for coupling the light beams of a light source of the vehicle lamp and a coupling-out structure.
  • the directions of the coupled-in light beams are changed so as to produce a radiation characteristic which differs from the emission characteristic of the light emission of the light source of the vehicle lamp.
  • Vehicle lights contribute increasingly to the design of the vehicle.
  • the design of the vehicle lights is to give the vehicle in particular a characteristic appearance, which is easily recognized and by which the vehicle differs from the design of other vehicles. Furthermore, it make the space conditions for the vehicle lights of the vehicle, especially for the
  • a vehicle lamp arrangement is known from DE 10 2004 053 643 A1, in which the cover has a light-directing optical structure.
  • This structure has sawtooth-like projections which are each associated with a light emitting diode and this at least
  • a signal light is known in which an optical disc is arranged between the light source and a cover.
  • the cover has optical means in the form of a so-called pillow look.
  • the optical disk expands in the central area, the almost parallel light rays, while in the outdoor areas
  • Light rays are less dilated.
  • the present invention is based on the technical problem of providing an optical element and a vehicle lamp with such an optical element, which in a Light emission of the vehicle lamp can provide a light function of the vehicle and which gives the vehicle lamp a particularly characteristic appearance.
  • the optical element according to the invention is characterized in that the coupling-out structure comprises a multiplicity of facet surfaces in which light beams are coupled out in an emission angle that depends on the respective angular orientation of the facet surface.
  • the facet surfaces are arranged in a partial region of the coupling-out structure at different angles to one another in a non-repeating pattern.
  • the faceted surfaces of the optical element give the vehicle lamp a particularly characteristic appearance for the viewer.
  • Facet surfaces make it possible to generate a defined radiation characteristic for a light function, which however is characterized by random, contrast-rich structures.
  • a regular structure as is usually used in the case of light disks or intermediate light disks, is avoided in a subregion of the coupling-out structure.
  • the observer does not perceive a uniform luminous surface, but especially with varying viewing positions and viewing angles a glittering effect, which gives the vehicle lamp another special characteristic and makes the vehicle lamp recognizable to the beholder again.
  • the subregion of the coupling-out structure in which the facet surfaces are arranged at different angles to one another in a non-repeating pattern, makes up at least 30% of the coupling-out structure.
  • the subregion makes up exactly 30% of the coupling-out structure.
  • the subregion preferably makes at least 40% or 50% and particularly preferably exactly 50% of the
  • the subregion of the coupling-out structure in which the facet surfaces are arranged at different angles to one another in a non-repeating pattern preferably constitutes at least 60%, at least 70%, at least 80% or at least 90% of the coupling-out structure.
  • the subarea makes up exactly 70% of the coupling-out structure.
  • the partial area corresponds to the entire
  • the facet surfaces is advantageously also achieved that arranged behind the optical element further elements of the vehicle lamp, such as the light sources and reflectors, are not visible to the viewer or laminated by the optical element.
  • the distribution of the emission angles generated by the individual facet surfaces is of the one to be generated
  • the angular orientations of the individual facet surfaces to each other are randomly arranged. It is thus given a certain emission characteristic, for example, a specific light function of the vehicle.
  • This light function may be, for example, the taillight function, the function of the direction indicator of the vehicle or the reversing light of the vehicle. It may also be a light function of the vehicle headlight, such as the low beam or the high beam. From this radiation characteristic results, which light intensity is to be emitted at which angle. Since the facet surface, from which a certain light intensity is radiated at a certain angle, is arbitrary, a large number of possible arrangements of the angular orientations of the facet surfaces results. According to the invention, a random arrangement of the angular orientations of the facet surfaces is chosen, which is the
  • the facet surfaces are flat.
  • the individual facet surfaces are connected by edges.
  • the radius of curvature of these edges is in particular less than 4 mm.
  • Facet surfaces is advantageously enhanced the glittering effect for the viewer.
  • the edges are aligned parallel to each other.
  • an elongated irregular zigzag structure can be produced.
  • the length of the facet surfaces between the edges to adjacent facet surfaces is in particular greater than the thickness of the
  • the thickness of the optical element results from the distance of opposing surfaces on the Lichteinkoppel- and Lichtauskoppelseite.
  • the decoupling structure can be provided both on the coupling side and on the decoupling side. However, it is preferably provided on the light output side. Since the coupling-out structure of From the coupling side of the optical element gives an irregular structure, the average thickness is considered on this page.
  • the distance between the edges of the facet surfaces in a direction perpendicular to the thickness of the optical element is always the same.
  • the irregularity of the facet surfaces is thus achieved via the angular orientation of the facet surfaces.
  • a regular pattern may result in the projection of the facet surface in a plane which is perpendicular to the thickness direction of the optical element, thus, a regular pattern may result.
  • the non-repeating pattern results with respect to the angular orientations of the facet surfaces.
  • the angular orientation is selected at random, but, as explained above, certain secondary conditions for generating a defined emission characteristic can be taken into account.
  • Facet surfaces are generated random numbers p between 0 and M. For successive, ie adjacent facet surfaces, the positive and negative values of the successive random numbers p are alternately taken as the distance value a of the respective facet surface. The edges of the facet surfaces are then arranged at the respective distance values a. The distance values a determine the angular orientation of the facet surface, since the distance between the edges in the direction perpendicular to the thickness of the optical element is the same. The distance perpendicular to the thickness of the optical element and the
  • Distance value a thus define a right-angled triangle in cross-section whose hypotenuse is the facet area.
  • Optics elements are only used those random numbers for generating the distance value for which the deviation from the random number of the preceding distance value does not exceed a defined percentage, for example 10%. In this way, too large irregularities can be avoided in an advantageous manner.
  • a regular structure known per se which generates the desired emission characteristic.
  • a per se known cushion optics can be considered, which generates the desired radiation characteristic.
  • This structure is cut n times and the curvatures are linearized to give flat surfaces with a certain angular orientation.
  • the resulting facet surfaces now have a regular structure.
  • the facet faces are randomly arranged. Due to the angular orientation in the facet surface, the emission characteristic is retained, but for the observer there is no longer a regular decoupling structure.
  • a vehicle lamp is provided with the above-described optical element.
  • the optical element can be used as an intermediate lens in the
  • Vehicle light to be arranged.
  • the optical element forms a lens of the vehicle lamp.
  • FIG 1 shows the structure of an embodiment of the invention
  • FIG. 2 shows a detail of a cross section of an embodiment of the invention
  • Figure 3 shows a section of the arrangement of the optical element in one
  • Embodiment of the vehicle lamp Embodiment of the vehicle lamp.
  • Fig. 1 an embodiment of the vehicle lamp 1 according to the invention is shown.
  • vehicle light 1 may be a tail light or a headlight of a
  • the vehicle lamp 1 comprises a housing 2, which is closed to the outside by a transparent clear lens cover 5 formed in clear glass optics.
  • a light source 3 is arranged, which is electrically connected to a light control device (not shown). Further, within the housing 2 is a Reflector 4 is arranged so that the light emitted from the light source 3 is reflected in parallel in the direction of the light finishing disc 5.
  • an optical element 6 is arranged as an intermediate lens.
  • the optical element 6 has a light input 3 facing the light input surface 7.
  • the directions of the coupled light beams are changed so that a radiation pattern is generated, which differs from the emission characteristics of the light emission of the light source 3 of the vehicle lamp 1 and the light source 3 in conjunction with the reflector 4.
  • the optical element does not form an intermediate lens, but the LichtabQueryIFF.
  • the coupling-out structure 8 has a plurality of planar facet surfaces 9, in which light beams are coupled out in a certain angle of radiation, which depends on the respective angular orientation of the facet surface, as will be explained later.
  • Facet surfaces 9 are arranged in a partial region 12 of the coupling-out structure 8 at different angles to one another in a non-repeating pattern.
  • Angular orientations of the facet surfaces 9 are arranged in particular in a random pattern.
  • the partial area 12 extends over the entire coupling-out structure 8, thus making up 100% of the coupling-out structure 8.
  • Reflector 4 meet the exemplified light beams L1 and L2 on the
  • Light input surface 7, which is a flat surface in the illustrated embodiment of the optical element 6.
  • the light beams L1 and L2 in particular impinge perpendicularly on the light incoupling surface 7, so that they are not changed in their direction when they enter the optical element 6. Subsequently, the light beams L1 and L2 pass through the transparent optical element 6 and hit on the other side of the optical element 6 on the
  • the decoupling structure 8 comprises a plurality of elongate sections extending in the z-direction with adjacent facet surfaces 9. In the z-direction, adjacent facet surfaces 9 are connected to one another by edges 11. The edges 1 1 are aligned parallel to each other. The edges 1 1 resulting from adjoining facet surfaces 9 have substantially no rounding, the radius of curvature is in particular less than 4 mm.
  • Essential for the radiation characteristic generated by the optical element 6 is the angle a, which include the individual facet surfaces 9 with a plane parallel to the
  • Light input surface 7 is.
  • the angles ⁇ of the facet surfaces 9 namely determine the
  • Fig. 2 the angles ⁇ - ⁇ to a 4 are shown for the facet surfaces 9-1 to 9-4. From the angles ⁇ - ⁇ and a 4 results for the light beams L1 and L2, for example, the
  • Beam angle ß- ⁇ and ß 2 Beam angle ß- ⁇ and ß 2 .
  • angles ⁇ for the orientation of the facet surfaces 9 are determined, for example, as follows:
  • the optical element 6 determines what is to be generated by the optical element 6 for a radiation characteristic.
  • a radiation characteristic For example, the known radiation characteristic for a
  • Taillight function are generated. This results in the total distribution of the emission angle ß to be generated of the individual facet surfaces 9. Since in the present
  • Embodiment the light rays parallel to the light input surface 7 and the
  • Light input surface 7 is the same size for all facet surfaces 9.
  • the length I is in particular greater than the average thickness d of the optical element 6.
  • the average thickness d is, for example, 3 mm.
  • the angle ⁇ of a certain facet surface is now obtained from the distances a of the edges 1 1 to the average thickness d of the optical element 6, d. H. to the level 10.
  • the facet surface 9-1 is started.
  • the edge 1 1-0 at the beginning of this facet surface 9-1 is at a distance of the average thickness d of the
  • Arranged light input surface 7, ie a is zero in this case.
  • the next edge 1 1-1 to the adjacent facet face 9-2 is arranged at a distance of a-1 from the plane 10 at the mean thickness d of the optical element 6. This results in an angle ⁇ - ⁇ for the alignment of the facet surface 9-1.
  • the edge 1 1 -2 of the facet surface 9-2 to the next facet surface 9-3 is arranged at a distance a-2 from the plane 10.
  • the value of the distance a-2 is negative since the edge 1 1-2 is arranged on the side of the plane 10 facing the light-incoupling surface 7.
  • the distance values a for the individual facet surfaces 9 are determined as follows:
  • a maximum distance M from the plane 10 at the mean thickness d of the optical element 6 is set. This maximum distance M is smaller than the thickness d of the
  • Random numbers P generated.
  • the random numbers P are between 0 and M.
  • Facet area 9-1 the positive value of the random number Pi is taken as the distance value a-1.
  • the negative value of the random number P 2 is taken as the distance value a-2.
  • the next facet surface 9-3 again the positive value P 3 is taken as the distance value a-3.
  • the positive and negative values of the successive random numbers P are thus alternately taken as the distance value a of the respective facet surface 9.
  • the edges 11 of the facet surfaces 9 are now arranged at the respective distance values a, so that the zigzag pattern shown in FIGS. 2 and 3 results. Since the angular orientation of the facet faces 9 has been generated by means of random numbers, a non-repeating random pattern with regard to the alignment of the facet faces 9 is very likely to result.
  • a cushion optic known per se can be used as a starting point for the determination of the angles ⁇ of the facet surfaces 9.
  • the pillow-shaped bulges of this cushion optics are comparable to lenses, which is an incident parallel light beam fan out. If the same radiating characteristic as with the known cushion optics to be generated with the optical element 6, the individual pillow-shaped
  • the overall radiation characteristic thus corresponds to that of the cushion optics, but this is produced by the facet surfaces 9 arranged in a non-repeating pattern. In this way, there is no substantially uniformly illuminated surface, but with slight deviations of the viewing position

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

Abstract

La présente invention concerne un élément optique (6) destiné à un phare de véhicule (1), pourvu d'une surface d'injection de lumière (7) destinée à injecter la lumière émise par une source de lumière (3) du phare de véhicule (1) et d'une structure d'extraction (8) permettant de modifier les directions des rayons lumineux (L1, L2) injectées de manière à obtenir des propriétés d'émission qui sont différentes des propriétés d'émission de la lumière émise par la source de lumière (3) du phare de véhicule (1). L'élément optique (6) selon l'invention est caractérisé en ce que la structure d'extraction (8) comprend une pluralité de facettes planes (9) permettant d'extraire les rayons lumineux (L1, L2) à un angle d'émission β lequel dépend de l'orientation angulaire α de la facette plane (9) concernée, et les facettes planes (9) sont disposées à différents angles α les unes par rapport aux autres, de manière à constituer un schéma non-répétitif.
PCT/EP2013/056070 2012-03-22 2013-03-22 Elément optique destiné à un phare de véhicule WO2013139962A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380015645.6A CN104302966B (zh) 2012-03-22 2013-03-22 用于车灯的光学元件
KR1020147024450A KR101722825B1 (ko) 2012-03-22 2013-03-22 자동차 조명등용 광학 소자

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012005826.8 2012-03-22
DE102012005826A DE102012005826A1 (de) 2012-03-22 2012-03-22 Optikelement für eine Fahrzeugleuchte

Publications (1)

Publication Number Publication Date
WO2013139962A1 true WO2013139962A1 (fr) 2013-09-26

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ID=48047999

Family Applications (1)

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PCT/EP2013/056070 WO2013139962A1 (fr) 2012-03-22 2013-03-22 Elément optique destiné à un phare de véhicule

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Country Link
KR (1) KR101722825B1 (fr)
CN (1) CN104302966B (fr)
DE (1) DE102012005826A1 (fr)
WO (1) WO2013139962A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107178751A (zh) * 2017-07-06 2017-09-19 上海小糸车灯有限公司 具有立体发光效果的车灯配光纹及其设计生成方法

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FR3019116B1 (fr) * 2014-04-01 2017-11-24 Valeo Vision Dispositif lumineux avec ecran de deviation
DE102014218540B4 (de) 2014-09-16 2023-04-20 Volkswagen Aktiengesellschaft Fahrzeugleuchte und Verfahren zum Bereitstellen einer Lichtfunktion mittels einer Fahrzeugleuchte
DE102015216744A1 (de) 2015-09-02 2017-03-02 Volkswagen Aktiengesellschaft Fahrzeugleuchte und Verfahren zum Bereitstellen einer Lichtfunktion mittels einer Fahrzeugleuchte
DE102015216746A1 (de) 2015-09-02 2017-03-02 Volkswagen Aktiengesellschaft Fahrzeugleuchte und Verfahren zum Bereitstellen einer Lichtfunktion mittels einer Fahrzeugleuchte
DE102015216743A1 (de) 2015-09-02 2017-03-02 Volkswagen Ag Fahrzeugleuchte und Verfahren zum Bereitstellen einer Lichtfunktion mittels einer Fahrzeugleuchte
CN106369521A (zh) * 2016-09-30 2017-02-01 马瑞利汽车零部件(芜湖)有限公司 使用透镜实现近光的汽车前照灯光学系统
KR102396854B1 (ko) * 2017-07-10 2022-05-11 현대모비스 주식회사 차량용 램프 장치
GB2597242A (en) * 2020-07-13 2022-01-26 Iq Structures Sro Optics for luminaires
EP3964748A1 (fr) * 2020-09-03 2022-03-09 Varroc Engineering Limited Ensemble d'éclairage
DE102020124482A1 (de) 2020-09-21 2022-03-24 Bayerische Motoren Werke Aktiengesellschaft Beleuchtungsvorrichtung für ein Kraftfahrzeug

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FR2046337A5 (fr) * 1969-05-12 1971-03-05 Lucas Industries Ltd
GB2077413A (en) * 1980-06-05 1981-12-16 Iao Industrie Riunite Spa Vehicle lamp unit
DE3925999A1 (de) 1989-08-05 1991-02-07 Hella Kg Hueck & Co Signalleuchte
FR2727742A1 (fr) * 1994-12-01 1996-06-07 Valeo Vision Feu de signalisation pour vehicule automobile, notamment du type feu stop sureleve
US6529678B2 (en) * 1998-08-25 2003-03-04 Physical Optics Corporation Optical element having an integral surface diffuser
DE102004053643A1 (de) 2004-11-03 2006-05-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fahrzeugleuchtenanordnung
FR2925656A1 (fr) * 2007-12-21 2009-06-26 Holophane Soc Par Actions Simp Lentille de module d'eclairage de vehicule automobile
DE102008023551A1 (de) * 2008-05-14 2009-11-19 Automotive Lighting Reutlingen Gmbh Optische Linse für Beleuchtungszwecke und Beleuchtungseinrichtung mit einer solchen Linse
EP2481635A1 (fr) * 2011-01-27 2012-08-01 Automotive Lighting Italia S.p.A. Feu de signalisation d'un véhicule

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Publication number Priority date Publication date Assignee Title
FR2046337A5 (fr) * 1969-05-12 1971-03-05 Lucas Industries Ltd
GB2077413A (en) * 1980-06-05 1981-12-16 Iao Industrie Riunite Spa Vehicle lamp unit
DE3925999A1 (de) 1989-08-05 1991-02-07 Hella Kg Hueck & Co Signalleuchte
FR2727742A1 (fr) * 1994-12-01 1996-06-07 Valeo Vision Feu de signalisation pour vehicule automobile, notamment du type feu stop sureleve
US6529678B2 (en) * 1998-08-25 2003-03-04 Physical Optics Corporation Optical element having an integral surface diffuser
DE102004053643A1 (de) 2004-11-03 2006-05-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fahrzeugleuchtenanordnung
FR2925656A1 (fr) * 2007-12-21 2009-06-26 Holophane Soc Par Actions Simp Lentille de module d'eclairage de vehicule automobile
DE102008023551A1 (de) * 2008-05-14 2009-11-19 Automotive Lighting Reutlingen Gmbh Optische Linse für Beleuchtungszwecke und Beleuchtungseinrichtung mit einer solchen Linse
EP2481635A1 (fr) * 2011-01-27 2012-08-01 Automotive Lighting Italia S.p.A. Feu de signalisation d'un véhicule

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Publication number Priority date Publication date Assignee Title
CN107178751A (zh) * 2017-07-06 2017-09-19 上海小糸车灯有限公司 具有立体发光效果的车灯配光纹及其设计生成方法

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KR20140124391A (ko) 2014-10-24
KR101722825B1 (ko) 2017-04-05
CN104302966A (zh) 2015-01-21
CN104302966B (zh) 2017-09-08
DE102012005826A1 (de) 2013-09-26

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