WO2014009289A1 - Système d'éclairage - Google Patents

Système d'éclairage Download PDF

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Publication number
WO2014009289A1
WO2014009289A1 PCT/EP2013/064307 EP2013064307W WO2014009289A1 WO 2014009289 A1 WO2014009289 A1 WO 2014009289A1 EP 2013064307 W EP2013064307 W EP 2013064307W WO 2014009289 A1 WO2014009289 A1 WO 2014009289A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
tir
lighting device
laser
phosphor
Prior art date
Application number
PCT/EP2013/064307
Other languages
German (de)
English (en)
Inventor
Sergey Khrushchev
Original Assignee
Osram 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 Osram Gmbh filed Critical Osram Gmbh
Publication of WO2014009289A1 publication Critical patent/WO2014009289A1/fr

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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
    • F21S41/12—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
    • F21S41/10—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
    • F21S41/16—Laser light sources
    • 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
    • F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
    • 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
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the 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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/70—Prevention of harmful light leakage
    • 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
    • F21Y2101/00—Point-like light sources
    • 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
    • F21Y2115/30—Semiconductor lasers

Definitions

  • the invention relates to a lighting device according to the preamble of claim 1.
  • Such a lighting device is disclosed for example in US 2011/0084609 AI.
  • This document describes a lighting device with improved safety for the user.
  • a light sensor is provided in the lighting device that detects reflected at the light wavelength conversion element light and detects in this manner, the presence or absence of the light wavelength conversion element and a shutdown of the laser light source in the case of the absence of the light wavelength conversion member veran ⁇ initiated.
  • the illumination device has at least one laser light source and at least one optical system in which light from the at least one laser light source and at least one light wavelength conversion element.
  • the at least one optic is designed as a TIR optic.
  • TIR optics the abbreviation "TIR” stands for “total internal reflection”
  • TIR optics therefore refers to an optic in which light rays strike the interface from the optically denser medium to the optically thinner medium at an angle of incidence greater than the critical angle of total reflection and thus totally reflected at this interface, so that no transition takes place in the optical thinner medium.
  • the op ⁇ table denser medium is, for example, sapphire, glass or transparent plastic material of the optics and the optically thinner material to air or vacuum.
  • the at least one optical wavelength conversion element according to the invention arranged on a surface of the TIR optics so on occurs that light emitted from the at least ei ⁇ NEN laser light source and coupled into the at least one TIR optic light at this surface in the light wavelength conversion member.
  • the at least one laser ⁇ light source and so on ⁇ aligned with each other at least one TIR optics that occurs on the aforementioned surface in the at least one Lichtwellendorfnkonversi- onselement overflowed light having angles of incidence on this surface, which is equal to or greater than a critical angle ⁇ , which is defined as follows:
  • nl is the refractive index of air and n2 is the index Bre ⁇ monitoring the at least one TIR optics at the pre ⁇ called surface.
  • the illumination device according to the invention thus does not require additional sensors or control mechanisms, to prevent the release of the human eye Surgicaldli ⁇ cher laser radiation.
  • the TIR optics of the Invention ⁇ proper illumination device of sapphire, glass or transparent plastic or transparent ceramic or transparent crystal in order to keep losses due Lichtab ⁇ absorption as low as possible.
  • the at least one optical wavelength conversion element of the lighting device according to the invention advantageously comprises phosphor which at least converts the light emitted from the Minim ⁇ least a laser light source electromagnetic radiation proportionally in electromagnetic Strah ⁇ lung with a different wavelength.
  • He phosphor ⁇ enables in a simple manner a conversion of Lichtwel- lenus of light emitted from the at least one laser light source.
  • the chemical composition of the phosphor and the concentration of the phosphor can influence the wavelength of the converted light and the relative proportions of converted and unconverted light.
  • At least one Lichtwel- leninkonversionselement loading ⁇ illumination unit comprising at least one Lichtwel- leninkonversionselement loading ⁇ illumination unit according to the invention additionally adhesive for fixing the phosphor.
  • adhesive of the phosphor can be fixed directly on a surface, for example, egg ⁇ ner surface of the TIR optics.
  • the phosphor of the light wavelength conversion element is arranged as a phosphor coating on egg ⁇ ner surface of the TIR optics.
  • the phosphor is formed for example as a phosphor mixture or as a single phosphor and arranged in one or meh ⁇ eral layers on a surface of the TIR optics.
  • the TIR optic advantageously consists of a transparent material with good heat conduction. Therefore, according to the most preferred embodiments of the invention, the TIR optic is sapphire. The heating of the phosphor caused by the laser light can thereby be dissipated via the sapphire material and the holding device of the TIR optics to the environment.
  • a mirrored metal layer is arranged on the abovementioned phosphor coating. This metal layer serves as a reflector for the light coupled into the light wavelength conversion element and increases the path length of the light in the light wavelength conversion element or in the phosphor coating. This increases the proportion of converted light.
  • the mirrored metal surface can be used as an electrical contact for closing or interrupting a power supply for the at least one laser light source.
  • mirrored metal layer in a power supply for the power supply of the at least one laser light source, so that in the case of lack of Lichtwel- leninkonversionselements the power supply is interrupted and thus no power supply of the at least one laser light source takes place.
  • the at least one laser light source is advantageously designed as a fiber laser or laser diode in order to achieve, with simple means, that the illumination device according to the invention comes as close as possible to the ideal of a point light source.
  • the at least one laser light source of the invention shown SEN illumination device is preferably designed as Laserdi ⁇ ode, the electromagnetic radiation from the wavelength range of 380 nm to 490 nm, that is, light from the spectral region of blue light generated.
  • the at least one Lichtwellenlienkon- version element of the lighting device according to the invention configured such that a part of the generated by the at least one laser diode electromagnetic radiation upon passing the at least one Lichtwel- lennostinkonversionselements in electromagnetic Strah ⁇ lung with a dominant wavelength from the wavelength range of 560 nm to 590 nm is converted.
  • the lighting device according to the invention is characterized as a white light source versatile ⁇ bar.
  • the TIR optics of the illumination device according to the invention is advantageously formed rotationally symmetrical with respect to a rotation axis and rotatably supported about the ⁇ se rotation axis.
  • Characterized ⁇ size the heat distribution and the light distribution of the coupled-in the TIR optics by means of laser light sources of heat and light can be homogenized.
  • the illumination device according to the invention preferably serves as a source of white light in a vehicle headlight or in other projection applications, for example in microscopy or endoscopy.
  • Figure 1 is a schematic representation of the illumination ⁇ device according to the first embodiment of the invention
  • Figure 2 is a schematic representation of the illustrated in Figure 1 lighting device without Lichtwelleninkonversionselernent
  • Figure 3 is a schematic representation of the illumination ⁇ device according to the second embodiment of the invention
  • FIG. 4 A schematic representation of the illumination device depicted in FIG. 3 without light wavelength conversion element
  • the illumination device comprises a TIR optical system 1, a light wavelength conversion element 2 and four laser diodes 3, of which only one is shown in FIG. 1 for the sake of clarity.
  • the illumination device comprises an operating device (not shown) for the laser diodes 3 and Garvor ⁇ directions (not shown) for the TIR optics 1 and the laser diodes.
  • the TIR optics 1 is made of sapphire and has a Bre ⁇ chung index n2 of 1.76.
  • the TIR optics 1 is formed in one piece and has a circular disk-shaped base portion 11 and a seamlessly thereto subsequently ⁇ sequent frustoconical portion 12 constituting the base portion 11, on its side facing away from the frustoconical portion 12 side, a first end surface 110 of the TIR lens system 1 of ,
  • the frustoconical portion 12 of the TIR optic 1 forms, on its side remote from the circular disk-shaped base portion 11 side, a second end face 120 of the TIR optics 1.
  • the second Stirnflä ⁇ surface 120 is parallel to the first end face 110 angeord ⁇ net and has a smaller area than the first Helical surface 110.
  • the diameter of the base portion 11 ent ⁇ speaks the largest diameter of the frustoconical portion 12.
  • the second end surface 120 of the TIR lens system 1 corresponds to the top surface of the frustoconical portion 12 and at its base of the truncated cone-like portion 12 leads smoothly into the circular discs ⁇ shaped base portion 11 of the TIR optics 1 on.
  • the lateral surface 121 of the frustoconical portion 12 of the TIR optic 1 forms an angle of 135 ° with the second end face 120 and is arranged at an angle of 45 ° to the first end face 110.
  • the light wavelength conversion element 2 consists of phosphor 21, which is fixed by means of silicone adhesive 20 on the second end face 120 of the TIR optics 1.
  • the phosphor 21, together with the silicone adhesive 20 has a phosphor coating on the TIR optics 1, which is the second end face 120 of the TIR optics 1 completely from ⁇ covers.
  • the refractive index of the silicone adhesive 20 is 1.5.
  • the phosphor layer 21 is covered by a verapt ⁇ te metal layer 22nd That is, the luminous ⁇ material layer 21 is arranged in the manner of a sandwich between the TIR optics 1 and the metal layer 22.
  • the phosphor layer 21 is formed of cerium-doped yttrium-aluminum garnet (YAG: Ce). This phosphor is a so-called yellow fluorescent substance, the light from the violet and blue spectral range, corresponding to the wavelength range from 380 nm to 490 nm, in yellow Light with a dominant wavelength in the range of 560 nm to 590 nm converted.
  • YAG cerium-doped yttrium-aluminum garnet
  • the four laser diodes 3 of the illumination device according to the first embodiment of the invention are each designed to generate light having a wavelength from the spectral range of the violet and blue light, corresponding to the wavelength range from 380 nm to 490 nm.
  • each of the four laser diodes 3 can be followed by a collimator lens (not shown), which parallelises the light emitted by the respective laser diode 3.
  • the four identically formed laser diodes 3 are arranged at the corners of a fictive square and aligned such that the light emitted by the laser diodes 3 light impinges with a incidence angle of zero degrees on the lateral surface 121 of the frustoconical portion 12 of the TIR optics 1.
  • the course of the light beams is schematically illustrated by means of two light beams L 1, L 2 emitted by one of the four laser diodes 3.
  • the light beams LI, L2 emitted by the laser diode 3 run parallel and impinge on the lateral surface 121 of the TIR optical system 1 at an angle of incidence of zero degrees.
  • the light rays LI, L2 are reflected back into the TIR optics by total reflection, because the angle of incidence of the light rays LI, L2 at the first end face 110 is greater than the critical angle ⁇ is the total reflection of the TIR optic 1 for the passage of light into air.
  • the light rays LI, L2 also strike the second face at the same angle of incidence. Area 120 of the TIR optics 1 on. When hitting the second end face 120 of the TIR optic 1, the light rays LI, L2 pass into the light wavelength conversion element 2 with a refraction angle which is greater than their angle of incidence on the second end face 120. Due to the high compared to air refractive index of the Sili ⁇ konklebers 20 no total reflection of the light beams LI, L2 takes place at the second end face 120th Upon penetration into the phosphor layer 21, the light rays LI, L2 are scattered on the phosphor particles, and a part of the light is converted into yellow light. The mirrored metal layer 22 reflects both portions of the light back towards the TIR optics 1.
  • the TIR optics 1 can rely on the ERS th end face 110th Due to the scattering on the phosphor particles of the phosphor layer 21 and the reflection on the metal layer 22, white mixed light impinges on the first end face 110 of the TIR optics 1 which are smaller than the abovementioned critical angle ⁇ which corresponds to the angle of total reflection of the TIR optics. Optics 1 for the passage of light from the material of the TIR optics 1 in air corresponds.
  • the white light-mixing ⁇ therefore exits at the first end face 110 of the TIR optics. 1 This situation is not shown in FIG.
  • the first end face 110 has a size in the range of 0.1 mm 2 to 5 mm 2 and serves as a light source, which is arranged for example in the focus of a reflector, insbesonde ⁇ re a motor vehicle headlight reflector.
  • the light beams LI, L2 strike the first end face 110 and the second end face 120 of the TIR optics 1 at an angle of incidence of 45 ° in each case.
  • the refractive angle of the light beams LI, L2 calculated on the transition from the TIR optic 1 into the silicone adhesive 20 is 56.1 °, calculated according to the snelliuschen law of refraction.
  • FIG. 2 shows the illumination device according to the first exemplary embodiment of the invention without light wavelength conversion element 2.
  • Feh ⁇ lens of the light wavelength conversion element 2 that is in the case of a partially or completely detached phosphor coating
  • the light beams LI, L2 can therefore leave the TIR optics 1 neither at the first end face 110 nor at the second end face 120.
  • the reflective metal layer 22 (Fig. 1) is preferably connected as an electrical contact in a circuit for power ⁇ supply of the laser diodes 3 such that in the case of absence of the light wavelength conversion element 2 of this circuit is open and thus the Laserdi ⁇ diodes are switched off 3.
  • FIG. 3 schematically illustrates a lighting device according to the second exemplary embodiment of the invention.
  • the illumination device comprises a TIR optic 1 ', a light wavelength conversion element 2' and four laser diodes 3 ', of which only one is shown in FIG. 3 for the sake of clarity.
  • the illumination device comprises a Radiovorrich- device (not shown) for the laser diode 3 'and Hal ⁇ tevortechniken (not shown) for the TIR optics 1' and the laser diode 3 '.
  • the TIR optic 1 ' is made of sapphire and has a refractive index n2 of 1.76.
  • the TIR optic 1 ' is designed in one piece and has a circular disk-shaped base section 11' and a conical section 12 'adjoining it.
  • the base portion 11 'bil ⁇ det, on its side facing away from the conical portion 12' side, an end face 110 'of the TIR optics 1' from.
  • the lateral surface 121 'of the conical portion 12' of the TIR optic 1 ' is arranged at an angle of 45 ° to the end face 110'.
  • the opening angle of the conical portion 12 ' is 90 °.
  • the Lichtwellenlän- is genkonversionselement 2' arranged and fixed on the Stirnflä ⁇ surface 110 '.
  • the light wavelength conversion element 2 ' consists of phosphor 21', which is fixed by means of silicone adhesive on the end face 110 'of the TIR optics 1'.
  • the phosphor 21 ', together with the silicone adhesive 20' forms a phosphor coating on the end face 110 'of the TIR optics 1'.
  • the refractive index of the silicone adhesive 20 'be ⁇ carries 1.5.
  • the phosphor layer 21 ' is formed of cerium-doped yttrium-aluminum garnet (YAG: Ce). This phosphor is a so-called yellow phosphor which converts light from the violet and blue spectral regions corresponding to the wavelength range of 380 nm to 490 nm into yellow light having a dominant wavelength in the range of 560 nm to 590 nm.
  • the four laser diodes 3 'of the lighting device according to the second embodiment of the invention are each ⁇ wells designed such that they generate light having a Wel ⁇ lenide from the spectral range of the violet and blue light, corresponding to the wavelength range of 380 nm to 490 nm.
  • the four laser diodes 3 ' may optionally each have a collimator lens (not shown) arranged according to ⁇ , which parallelizes the light emitted by the respective laser diode 3'.
  • the four identically formed laser diodes 3 ' are arranged at the corners of a notional square and aligned such that the light emitted by the laser diode 3' with a light Incident angle of zero degrees on the lateral surface 121 'of the conical portion 12' of the TIR optics 1 'meets.
  • FIG. 3 diagrammatically shows the course of the light beams on the basis of two light beams LI ', L2' which are emitted by one of the four laser diodes 3 '.
  • the light beams LI ', L2' emitted by the laser diode 3 ' run parallel and impinge on the lateral surface 121' of the TIR optical system 1 'with an angle of incidence of zero degrees.
  • the light beams LI ', L2' pass into the silicone adhesive 20 'at a refraction angle which is greater than their angle of incidence on the end face 110'.
  • the angle of incidence of the light rays LI ', L2' on the end face 110 'of the TIR optics 1' is greater than the critical angle ⁇ of the total reflection of the TIR optics 1 'for the passage of the light in air. Due to the comparatively high Brechungsin ⁇ dex of the silicone adhesive 20 'is at the end face 110' no total reflection of the light beams LI ', L2' instead.
  • the light beams LI', L2 'scattered by the phosphor particles and a part of the light is kon ⁇ vertiert in yellow light.
  • the light is deflected in many of ⁇ Kunststoffliche directions so that white light, so-called white mixed light, which is a mixture of non-converted blue light and Converted yellow light, the light wavelength conversion member 2' by scattering by the phosphor particles of the phosphor layer 21 on its with leaves the phosphor layer 21 'side provided.
  • white mixed light which is a mixture of non-converted blue light and Converted yellow light
  • the with the light wavelength conversion element 2 'provided end face 110' has a size in the range of 1 mm 2 to 5 mm 2 and serves as a light source, which is arranged in ⁇ example in the focus of a reflector, in particular a motor vehicle headlight reflector.
  • FIG. 4 shows the illumination device according to the second exemplary embodiment of the invention without light wavelength conversion element 2 '. In the case of the absence of the light wavelength conversion element 2 ', that is in the case of a partially or completely detached phosphor coating, the light rays LI', L2 'at the portions of the end face 110' of the TIR optics
  • the invention is not limited to the above in more detail erläu ⁇ failed embodiments of the invention.
  • laser diodes 3, 3 ' which emit blue light
  • laser diodes can be used which, for example, emit ultraviolet radiation which is converted into white or colored light by means of at least one light wavelength conversion element.
  • different laser diodes can be used to ⁇ that emit light of different colors and are ordered so check that the colored light of the Laserdio ⁇ the mixes to form white light.
  • the TIR optics 1, 1 ' according to the first and second embodiments of the invention can be rotatably mounted around the truncated cone axis of the truncated cone or the cone axis of the tapered ⁇ portion 12, 12' of the TIR optics 1, 1 'to the light coupling to homogenize the TIR optics and the heat distribution in the TIR optics.
  • TIR optics 1, 1 instead of the TIR optics 1, 1 'according to the preferred embodiments, other forms of TIR optics may be used. Furthermore, the TIR optic does not necessarily consist of sapphire. Glass, transparent plastics and transparent ceramics are alternative Ma ⁇ terialien for the TIR optics.
  • the phosphor does not necessarily have to be fixed to the TIR optic with glue.
  • the phosphor can be blown up or sintered, for example or be fixed by means of hydrogen bonds on the TIR optics.
  • the phosphor layer can be electrophoretically deposited onto a is on the TIR optics ⁇ brought indium tin oxide layer (ITO layer).
  • the angle of incidence of the laser light on the TIR optics need not be zero degrees, as in the two embodiments. There are also other angles of incidence mög ⁇ Lich. In addition, the laser radiation may also have a certain divergence. Collimator lenses are, as mentioned above, optional.

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

Abstract

L'invention concerne un système d'éclairage comprenant au moins une source de lumière laser (3 ; 3') et au moins une optique à réfraction interne totale (1 ; 1') dans laquelle la lumière de la ou des sources de lumière laser (3 ; 3') est injectée, ainsi qu'au moins un élément convertisseur de longueur d'onde lumineuse (2 ; 2') disposé sur une surface (120 ; 110') de l'optique à réfraction interne totale (1 ; 1') de telle façon que la lumière émise par la ou les sources de lumière laser (3 ; 3') et injectée dans la ou les optiques à réfraction interne totale (1 ; 1') passe au niveau de cette surface (120 ; 110') dans l'élément convertisseur de longueur d'onde lumineuse (2 ; 2'). La ou les sources de lumière laser (3 ; 3') et la ou les optiques à réfraction interne totale (1 ; 1') sont alignées les unes par rapport aux autres de telle façon que la lumière qui passe au niveau de ladite surface (120 ; 110') dans le ou les éléments convertisseurs de longueur d'onde lumineuse (2 ; 2') frappe cette surface (120 ; 110') selon des angles d'incidence égaux ou supérieurs à un angle limite Θ défini comme suit : Θ = arcsin 〔n1/n2〕, où n1 est l'indice de réfraction de l'air et n2 est l'indice de réfraction de la ou des optiques à réfraction interne totale au niveau de ladite surface.
PCT/EP2013/064307 2012-07-09 2013-07-05 Système d'éclairage WO2014009289A1 (fr)

Applications Claiming Priority (2)

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DE102012211915.9A DE102012211915A1 (de) 2012-07-09 2012-07-09 Beleuchtungseinrichtung
DE102012211915.9 2012-07-09

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WO2017071919A1 (fr) * 2015-10-27 2017-05-04 Osram Gmbh Dispositif d'éclairage à source de rayonnement de pompage
DE102016209687A1 (de) 2016-06-02 2017-12-07 Osram Gmbh Beleuchtungsvorrichtung

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KR101781033B1 (ko) * 2016-06-14 2017-09-25 엘지전자 주식회사 차량용 발광기구
KR101836845B1 (ko) * 2016-07-04 2018-03-09 엘지전자 주식회사 차량용 발광기구
DE102016119739A1 (de) * 2016-10-17 2018-04-19 Osram Opto Semiconductors Gmbh Optoelektronisches Bauelement
JP6867870B2 (ja) * 2017-05-18 2021-05-12 スタンレー電気株式会社 車両用灯具
WO2024052198A1 (fr) * 2022-09-09 2024-03-14 Signify Holding B.V. Luminophore de forme annulaire en combinaison avec une lentille axicon pour produire une source de lumière blanche à haute intensité pompée par laser

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