EP2846077A3 - Projection lens for use in an LED module of a motor vehicle headlight, and LED module and motor vehicle headlamp with such a projection lens - Google Patents

Projection lens for use in an LED module of a motor vehicle headlight, and LED module and motor vehicle headlamp with such a projection lens Download PDF

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Publication number
EP2846077A3
EP2846077A3 EP14180018.5A EP14180018A EP2846077A3 EP 2846077 A3 EP2846077 A3 EP 2846077A3 EP 14180018 A EP14180018 A EP 14180018A EP 2846077 A3 EP2846077 A3 EP 2846077A3
Authority
EP
European Patent Office
Prior art keywords
led module
motor vehicle
projection lens
optics
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.)
Granted
Application number
EP14180018.5A
Other languages
German (de)
French (fr)
Other versions
EP2846077A2 (en
EP2846077B1 (en
Inventor
Emil P Dr. Stefanov
Christian Dr. Buchberger
Markus Kiesel
Martin Licht
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 Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Automotive Lighting Reutlingen 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 Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP2846077A2 publication Critical patent/EP2846077A2/en
Publication of EP2846077A3 publication Critical patent/EP2846077A3/en
Application granted granted Critical
Publication of EP2846077B1 publication Critical patent/EP2846077B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • 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
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • 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
    • F21S41/24—Light guides
    • 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
    • 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
    • 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-F21S41/28
    • 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
    • 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
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/155—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having inclined and horizontal cutoff lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/20—Illuminance distribution within the emitted light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Abstract

Die Erfindung betrifft eine Projektionsoptik (16) zum Einsatz in einem LED-Modul (6) eines Kraftfahrzeugscheinwerfers (1). Das LED-Modul (6) weist eine Lichtquelle (10) in Form einer LED-Matrix, die mehrere matrixartig neben- und/oder übereinander angeordnete LED-Chips (11) umfasst, eine Primäroptik (12), die mehrere matrixartig neben- und/oder übereinander angeordnete Primäroptikelemente (13) umfasst, zum Bündeln des von der Lichtquelle (10) ausgesandten Lichts und die Projektionsoptik (16) auf. Die Projektionsoptik (16) projiziert eine Lichtaustrittsfläche (17) der Primäroptik (12) zur Erzeugung einer vorgegebenen Lichtverteilung (27) auf eine Fahrbahn vor das Fahrzeug. Um die Lichtverteilung (27) hinsichtlich Intensitätsschwankungen und Farbeffekten zu verbessern, wird vorgeschlagen, dass die Projektionsoptik (16) derart ausgebildet ist, dass sie auf ihrer Bildseite mindestens zwei separate, in horizontaler Richtung zueinander versetzte Abbildungen (25, 26, 28, 29) der Lichtaustrittsfläche (17) der Primäroptik (12) erzeugt. (Figur 10)

Figure imgaf001
The invention relates to a projection optical system (16) for use in an LED module (6) of a motor vehicle headlight (1). The LED module (6) has a light source (10) in the form of an LED matrix, which comprises a plurality of matrix-like juxtaposed and / or superimposed LED chips (11), a primary optics (12), the next several matrix-like and / or superimposed primary optic elements (13), for bundling the light emitted by the light source (10) and the projection optics (16). The projection optics (16) project a light exit surface (17) of the primary optics (12) for generating a predetermined light distribution (27) on a roadway in front of the vehicle. In order to improve the light distribution (27) with regard to intensity fluctuations and color effects, it is proposed that the projection optics (16) be designed such that they have on their image side at least two separate images (25, 26, 28, 29) offset from one another in the horizontal direction. the light exit surface (17) of the primary optics (12) produced. (Figure 10)
Figure imgaf001
EP14180018.5A 2013-09-06 2014-08-06 Projection lens for use in an LED module of a motor vehicle headlight, and LED module and motor vehicle headlamp with such a projection lens Active EP2846077B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013217843.3A DE102013217843A1 (en) 2013-09-06 2013-09-06 Projection optics for use in an LED module of a motor vehicle headlight, and LED module and motor vehicle headlights with such a projection optics

Publications (3)

Publication Number Publication Date
EP2846077A2 EP2846077A2 (en) 2015-03-11
EP2846077A3 true EP2846077A3 (en) 2015-03-25
EP2846077B1 EP2846077B1 (en) 2020-04-22

Family

ID=51292832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14180018.5A Active EP2846077B1 (en) 2013-09-06 2014-08-06 Projection lens for use in an LED module of a motor vehicle headlight, and LED module and motor vehicle headlamp with such a projection lens

Country Status (4)

Country Link
US (1) US9476558B2 (en)
EP (1) EP2846077B1 (en)
CN (1) CN104421714B (en)
DE (1) DE102013217843A1 (en)

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DE102016124800A1 (en) * 2016-12-19 2018-06-21 Automotive Lighting Reutlingen Gmbh Primary optics module for use in a motor vehicle lighting device and motor vehicle lighting device with such a primary optics module
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Also Published As

Publication number Publication date
EP2846077A2 (en) 2015-03-11
CN104421714A (en) 2015-03-18
US20150070926A1 (en) 2015-03-12
EP2846077B1 (en) 2020-04-22
CN104421714B (en) 2017-09-22
US9476558B2 (en) 2016-10-25
DE102013217843A1 (en) 2015-03-12

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