EP3835650A1 - Corps optique pour un phare de véhicule automobile - Google Patents

Corps optique pour un phare de véhicule automobile Download PDF

Info

Publication number
EP3835650A1
EP3835650A1 EP19214438.4A EP19214438A EP3835650A1 EP 3835650 A1 EP3835650 A1 EP 3835650A1 EP 19214438 A EP19214438 A EP 19214438A EP 3835650 A1 EP3835650 A1 EP 3835650A1
Authority
EP
European Patent Office
Prior art keywords
optical
radius
basic shape
segments
body 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.)
Withdrawn
Application number
EP19214438.4A
Other languages
German (de)
English (en)
Inventor
Christian Maier
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.)
ZKW Group GmbH
Original Assignee
ZKW Group GmbH
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 ZKW Group GmbH filed Critical ZKW Group GmbH
Priority to EP19214438.4A priority Critical patent/EP3835650A1/fr
Priority to DE202020106901.2U priority patent/DE202020106901U1/de
Priority to CN202022924949.4U priority patent/CN215294790U/zh
Publication of EP3835650A1 publication Critical patent/EP3835650A1/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Withdrawn legal-status Critical Current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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • 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
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S41/33—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
    • 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

Definitions

  • the invention further relates to a motor vehicle headlight with at least one optical body according to the invention.
  • An optic body designed as a reflector is used, for example, to deflect incident light beams in a specific direction.
  • An ideal paraboloid as the effective surface and a point light source, which is usually arranged at the focal point of a parabolic reflector.
  • the reflector surface is faceted in practice, i.e. divided into surface segments or optical segments. Each of these segments is inclined or curved towards the ideal parabolic shape in order to bring about the expansion described above.
  • connecting surfaces Due to the faceting and the deviation from the ideal parabolic shape, connecting surfaces have to be inserted between the photometric facet surfaces in order to obtain a coherent area. These connecting surfaces are also inclined towards the ideal parabolic shape, but also towards the optics segments. The result of this is that light incident on these connecting surfaces is reflected differently from the target direction. From certain viewing directions that deviate from the frontal view, for example, these connecting surfaces appear very bright. This increases the contrast between the minimum and maximum luminance in the luminous surface. However, these luminance differences are undesirable.
  • the curved active surface can also follow a part or section of a quadric.
  • a quadric In three dimensions, a quadric generally describes an area in space, which is also called a second-order area or a square area.
  • Examples of a three-dimensional quadric are a (two-shell) hyperboloid, ellipsoid, (hyperbolic) paraboloid, cylinder, elliptical paraboloid and a cone.
  • quadrics have three-dimensional, curved surfaces, with degenerate quadrics having linear structures in some directions, such as a cylinder in the direction of its height or a cone, starting from a point on the base surface along the lateral surface in the direction of the tip of the cone.
  • the connecting surfaces which are not formed as part of a cylinder jacket can, for example, have a width in the order of magnitude of 0.2 to 1 mm.
  • the connecting surfaces which are designed as part of a cylinder jacket, reflect incident light in a more widely scattered manner, which results in a more homogeneous light impression Appearance or light distribution results (reduction of hot spots or light intensity maxima in a certain preferred direction, which would correspond to the direction of reflection of conventional optical segments with connecting surfaces).
  • the connecting surfaces formed as part of a cylinder jacket are shaped, for example, as grooves. It can be provided that the radius changes over the length of one or more grooves over their length. It can be provided that one, several or all connection surfaces or grooves, which are arranged in columns and / or rows between the optics segments, start on one side with a maximum radius and extend to the opposite side with a minimum radius, the radius extending each gradually changed over the length.
  • connecting surfaces which are designed as part of a cylinder jacket, have a different radius.
  • the optic body is designed as a reflector or as a light guide body.
  • both the entry and exit surfaces, connecting surfaces can be designed as part of a cylinder jacket with a radius.
  • the virtual basic shape is parabolic, hyperbolic, ellipsoidal or flat.
  • the individual optics segments are flat or planar.
  • the radius is 0.1 to 0.5 mm, preferably 0.1 to 0.3 mm, in particular 0.2 mm.
  • the object is also achieved with a motor vehicle headlight with at least one optical body.
  • the motor vehicle headlight comprises at least one light source, which is positioned at the focal point of the reflector, for example in the case of an optic body designed as a reflector and having a parabolic basic shape.
  • the motor vehicle headlight can also comprise several light sources which are assigned to the optic body and which couple or radiate light into it.
  • the motor vehicle headlight can also comprise a projection lens which is arranged downstream of the reflector in the emission or deflection direction.
  • Fig. 1 shows an exemplary optical body 10 designed as a reflector for a motor vehicle headlight, which reflector has an optical active surface 50 which is set up to reflect incident light rays from a light source, the active surface 50 in its entirety essentially following a virtual basic shape 60 , which in the example shown is designed as part of a paraboloid, targeted deviations from the virtual basic shape 60 for beam expansion are provided.
  • the virtual basic shape 60 can also have a hyperbolic, ellipsoidal or planar shape.
  • the reflector 10 further comprises several optics segments 100 , which form the effective surface 50 and are arranged in a grid-like manner in rows and columns, the optics segments 100 each being arranged inclined to the virtual basic form 60 to deviate from the virtual basic shape 60 , and with between the optic segments 100 due to an offset 110 to one another, which arises from the inclination of the optical segments 100 to the virtual basic shape, connecting surfaces 200 are arranged.
  • Figure 2A shows a schematic representation of a side view of the reflector 10 , showing how the individual optical segments 100 are arranged inclined to the virtual parabolic basic shape 60 .
  • the offset 110 of the optics segments that occurs due to the inclination of the optics segments to one another can also be seen.
  • the offset 110 is to be understood as the shortest distance between immediately adjacent end edges or edges of the optics segments 100 , such an offset generally being in the order of magnitude of 0.2 to 1 mm.
  • the optical segments 100 are designed to be planar, flat or planar and thus each form a plane in the mathematical sense.
  • Figure 2B shows the same schematic representation as Figure 2A , connecting surfaces 200 connecting the optical segments being arranged between the offset between the optical segments 100 shown.
  • Fig. 3 a perspective view of an optic body 10 designed as a reflector, with the connecting surfaces in contrast to the previously described embodiments 200 are formed between the columns of the optical segments 100 as part of a cylinder jacket with a radius.
  • FIG. 4 shows similar to Figure 2A and FIG. 2B is a schematic side view of the example from FIG Fig. 3 , wherein the connecting surfaces 200 formed as part of a cylinder jacket with a radius R can be clearly seen.
  • the radius R can be 0.1 to 0.5 mm, preferably 0.1 to 0.3 mm, preferably 0.2 mm.
  • the connecting surfaces 200 formed as part of a cylinder jacket are formed here as grooves. It can be provided that the radius changes over the length of one or more grooves over the length.
  • connection surfaces 200 or grooves which are arranged in columns and / or rows between the optics segments 100 , starting on one side with a radius R of 0.3 mm up to the opposite side with a radius R 0.1 mm, with the radius R changing gradually.
  • connecting surfaces 200 which are designed as part of a cylinder jacket, have a different radius R.
  • Figure 5A shows an exemplary optic body 20 embodied as a light guide body with an entry surface embodied as an active surface 50 , which entry surface is set up to refract incident light rays from a light source and to couple them into the light guide body.
  • a corresponding exit surface is arranged on the opposite side of the entry surface, but this cannot be seen due to the selected perspective view.
  • the effective surface 50 in this example essentially follows a curved or a virtual basic shape having a curvature, the remaining explanations of the above examples applying equivalently to the example of the light guide body, with the only difference that the connecting surfaces 200 formed as part of a cylinder jacket here are shaped as elongated projections.
  • Figure 5B shows a detailed view of the active surface 50 or the entry surface of the light guide body, the connecting surfaces 200 between the optics segments 100 being formed in columns and rows as part of a cylinder jacket with a radius.
  • exit surface of the light guide body is also equipped with optical segments and corresponding connecting surfaces.
  • Optic body 10 20 reflector 10 Light guide body 20th Effective area 50 Virtual basic form 60 Optics segment 100 Offset 110 Interface 200 radius R.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP19214438.4A 2019-12-09 2019-12-09 Corps optique pour un phare de véhicule automobile Withdrawn EP3835650A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19214438.4A EP3835650A1 (fr) 2019-12-09 2019-12-09 Corps optique pour un phare de véhicule automobile
DE202020106901.2U DE202020106901U1 (de) 2019-12-09 2020-12-01 Optikkörper für einen Kraftfahrzeugscheinwerfer
CN202022924949.4U CN215294790U (zh) 2019-12-09 2020-12-09 用于机动车前照灯的光学体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19214438.4A EP3835650A1 (fr) 2019-12-09 2019-12-09 Corps optique pour un phare de véhicule automobile

Publications (1)

Publication Number Publication Date
EP3835650A1 true EP3835650A1 (fr) 2021-06-16

Family

ID=68840911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19214438.4A Withdrawn EP3835650A1 (fr) 2019-12-09 2019-12-09 Corps optique pour un phare de véhicule automobile

Country Status (3)

Country Link
EP (1) EP3835650A1 (fr)
CN (1) CN215294790U (fr)
DE (1) DE202020106901U1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710095A (en) * 1970-09-23 1973-01-09 Gen Motors Corp Method of making a faceted reflector for a lighting unit
JPH10162606A (ja) * 1996-11-27 1998-06-19 Koito Mfg Co Ltd 車輌用灯具
DE19951407A1 (de) * 1999-10-26 2001-05-03 Hella Kg Hueck & Co Kraftfahrzeugleuchte
EP1338844A1 (fr) * 2002-02-21 2003-08-27 Valeo Vision Feu de signalisation comportant une pièce optique réalisant une fonction de signalisation de manière autonome
US20080259630A1 (en) * 2007-04-17 2008-10-23 Jeyachandrabose Chinniah Lens assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710095A (en) * 1970-09-23 1973-01-09 Gen Motors Corp Method of making a faceted reflector for a lighting unit
JPH10162606A (ja) * 1996-11-27 1998-06-19 Koito Mfg Co Ltd 車輌用灯具
DE19951407A1 (de) * 1999-10-26 2001-05-03 Hella Kg Hueck & Co Kraftfahrzeugleuchte
EP1338844A1 (fr) * 2002-02-21 2003-08-27 Valeo Vision Feu de signalisation comportant une pièce optique réalisant une fonction de signalisation de manière autonome
US20080259630A1 (en) * 2007-04-17 2008-10-23 Jeyachandrabose Chinniah Lens assembly

Also Published As

Publication number Publication date
CN215294790U (zh) 2021-12-24
DE202020106901U1 (de) 2021-01-14

Similar Documents

Publication Publication Date Title
EP2893249B1 (fr) Unité d'éclairage destinée à un projecteur
DE102008005488B4 (de) Scheinwerfer für Fahrzeuge
EP3329179B1 (fr) Dispositif d'illumination pour un phare de véhicule
AT515864B1 (de) Beleuchtungsvorrichtung für Fahrzeuge sowie Kraftfahrzeugscheinwerfer
DE1597945B2 (de) Leuchte
EP3531012B9 (fr) Dispositif d'éclairage pour véhicules automobiles pourvu de guide de lumière allongé
DE2925456A1 (de) Beleuchtungskoerper fuer strassenbeleuchtung
DE112017001098B4 (de) Beleuchtungsvorrichtung
DE202012000567U1 (de) Beleuchtungseinrichtung für ein Kraftfahrzeug
DE102022107022A1 (de) Fahrzeugrückfahrleuchten mit hoher effizienz
DE19803987A1 (de) Scheinwerfer mit Lichtleitstab für Kraftfahrzeuge
DE19704267A1 (de) Signalleuchte mit verbesserten Mitteln zur Streuung des Lichts
EP1338845A2 (fr) Luminaire
DE102005047746A1 (de) Anordnung zum gezielten Entblenden von Außenleuchten in vertikaler und horizontaler Achse
EP3199869A1 (fr) Dispositif d'éclairage
DE102014017295A1 (de) Leuchtvorrichtung
EP3835650A1 (fr) Corps optique pour un phare de véhicule automobile
EP3341648B1 (fr) Élément optique
DE10314357A1 (de) Kraftfahrzeugleuchte, insbesondere Zusatzbremsleuchte
EP0638764B2 (fr) Lampadaire à éclairage principalement direct
DE19951407A1 (de) Kraftfahrzeugleuchte
EP1496308A2 (fr) Lampe d'éclairage intérieur avec un élément réfractif
EP1209409B1 (fr) Dispositif d'éclairage extérieur à caratéristiques d' émission de lumière ameliorées
DE102008025013B4 (de) Optikelement zur Beleuchtung eines Fahrzeugkennzeichens
DE102012211748A1 (de) Optisches kollimationssystem

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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: 20211217