EP1637797A3 - Collimator lens for a projecting headlight in a motor vehicle - Google Patents

Collimator lens for a projecting headlight in a motor vehicle Download PDF

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Publication number
EP1637797A3
EP1637797A3 EP05102823A EP05102823A EP1637797A3 EP 1637797 A3 EP1637797 A3 EP 1637797A3 EP 05102823 A EP05102823 A EP 05102823A EP 05102823 A EP05102823 A EP 05102823A EP 1637797 A3 EP1637797 A3 EP 1637797A3
Authority
EP
European Patent Office
Prior art keywords
lens
annular
rrs
fzf
crs
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Withdrawn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
EP05102823A
Other languages
German (de)
French (fr)
Other versions
EP1637797A2 (en
Inventor
Ales Kralj
Tomaz Logar
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
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 filed Critical Hella KGaA Huek and Co
Publication of EP1637797A2 publication Critical patent/EP1637797A2/en
Publication of EP1637797A3 publication Critical patent/EP1637797A3/en
Withdrawn legal-status Critical Current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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • 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
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures

Landscapes

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

Abstract

Ein Körper einer Sammellinse (CL) ist durch eine glatte Fläche (SF) und eine mit Fresnelzonen versehene Fläche (FZF) begrenzt, wobei die Fresnelzone mit einer ringförmigen oder einer zentralen Brechfläche (RRS bzw. CRS) und einer ringförmigen Sprungfläche (RSS) erzeugt ist. Jede innere Kreiskante (ICE), längs welcher die ringförmige oder zentrale Brechfläche (RRS bzw. CRS) und die benachbarte ringförmige Sprungfläche (RSS) innenseits aneinanderstoßen, liegt auf einer imaginären konvexen Fläche (CS), die die periphere Linsenkante (PE) einschließt und in der Richtung hin zu der Fläche (FZF) gewölbt ist. In der Richtung parallel zur geometrischen Achse der Linse gemessenen Höhen (h) der Abweichung äußerer Kreiskanten (OCE) von der imaginären konvexen Fläche (CS) sind möglichst klein. Die Zahl (N) der Flächen (RRS) wird durch 2 ≤ N ≤ 5 bestimmt.A body of a condenser lens (CL) is delimited by a smooth surface (SF) and a Fresnel zone (FZF), the Fresnel zone having an annular or a central refractive surface (RRS or CRS) and an annular crack surface (RSS) is. Each inner circle edge (ICE), along which the annular or central crushing surface (RRS or CRS) and the adjacent annular jump surface (RSS) abut on the inside, lies on an imaginary convex surface (CS), which encloses the peripheral lens edge (PE) and in the direction towards the surface (FZF) is curved. Heights (h) of the deviation of outer circle edges (OCE) from the imaginary convex surface (CS) measured in the direction parallel to the geometrical axis of the lens are as small as possible. The number (N) of areas (RRS) is determined by 2 ≤ N ≤ 5.

Die Sammellinse zeichnet sich trotz geringer Masse durch die guten Eigenschaften einer dicken Sammellinse wie hohe Lichtdurchlässigkeit und wenig Blenden oberhalb der Hell-Dunkel-Grenze aus, zugleich ist sie jedoch noch immer dünn genug, dass sie auch aus einem amorphen Thermoplast durch Spritzgießen hergestellt werden kann.

Figure imgaf001
Despite its low mass, the positive lens is characterized by the good properties of a thick converging lens such as high light transmission and few apertures above the cut-off line, but at the same time it is still thin enough that it can also be produced from an amorphous thermoplastic by injection molding ,
Figure imgaf001
EP05102823A 2004-09-17 2005-04-11 Collimator lens for a projecting headlight in a motor vehicle Withdrawn EP1637797A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI200400259A SI21894A (en) 2004-09-17 2004-09-17 Collecting lens for a projection headlight within a vehicle

Publications (2)

Publication Number Publication Date
EP1637797A2 EP1637797A2 (en) 2006-03-22
EP1637797A3 true EP1637797A3 (en) 2006-08-30

Family

ID=35355333

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05102823A Withdrawn EP1637797A3 (en) 2004-09-17 2005-04-11 Collimator lens for a projecting headlight in a motor vehicle

Country Status (2)

Country Link
EP (1) EP1637797A3 (en)
SI (1) SI21894A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT507254B1 (en) * 2008-09-09 2010-06-15 Fiala Werner LENS WITH INDEPENDENT NON-INTERFERING PARTIAL ZONES
FR3064339B1 (en) 2017-03-21 2020-10-30 Valeo Vision LIGHT MODULE WITH CHROMATISM CORRECTION
DE102017112955A1 (en) * 2017-06-13 2018-12-13 Automotive Lighting Reutlingen Gmbh Bifunctional light module for a motor vehicle headlamp with Lidar function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798506A2 (en) * 1996-03-29 1997-10-01 Osram Sylvania Inc. Motor vehicle headlamp
DE19856281A1 (en) * 1998-12-07 2000-06-08 Bosch Gmbh Robert Projection headlamp for vehicles has light source, and reflector of light as converging light beam through Fresnel collecting lens with approximately plane side facing against light output direction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798506A2 (en) * 1996-03-29 1997-10-01 Osram Sylvania Inc. Motor vehicle headlamp
DE19856281A1 (en) * 1998-12-07 2000-06-08 Bosch Gmbh Robert Projection headlamp for vehicles has light source, and reflector of light as converging light beam through Fresnel collecting lens with approximately plane side facing against light output direction

Also Published As

Publication number Publication date
EP1637797A2 (en) 2006-03-22
SI21894A (en) 2006-04-30

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