WO2016146161A1 - Apparatus for providing a light beam - Google Patents

Apparatus for providing a light beam Download PDF

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Publication number
WO2016146161A1
WO2016146161A1 PCT/EP2015/055441 EP2015055441W WO2016146161A1 WO 2016146161 A1 WO2016146161 A1 WO 2016146161A1 EP 2015055441 W EP2015055441 W EP 2015055441W WO 2016146161 A1 WO2016146161 A1 WO 2016146161A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
rim
light
rim body
light source
Prior art date
Application number
PCT/EP2015/055441
Other languages
French (fr)
Inventor
Keisuke Maekawa
Original Assignee
Osram Opto Semiconductors 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 Opto Semiconductors Gmbh filed Critical Osram Opto Semiconductors Gmbh
Priority to PCT/EP2015/055441 priority Critical patent/WO2016146161A1/en
Publication of WO2016146161A1 publication Critical patent/WO2016146161A1/en

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
    • 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
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof

Definitions

  • Apparatus for providing a light beam refers to an apparatus for providing a light beam according to claim 1.
  • An object of the proposed invention is to provide an
  • An advantage of the apparatus is to define a sharp beam cutting line for the light beam. This advantage is generated by a rim body that defines a part of a rim of the emitting face of the apparatus. Therefore the light beam that is emitted via the emitting face of the apparatus defines a sharp beam cutting line. This is of advantage for an
  • An embodiment of the apparatus comprises a rim body that defines a circumferential rim around the emitting face.
  • This apparatus provides a light beam with a circumferential sharp beam cutting line. This means that the light beam illuminates a precise defined area.
  • the apparatus uses a light emitting diode or a laser diode as a light source. The light emitting diode and the laser diode have the advantage to provide a high light flux and to generate less heat.
  • a further embodiment of the apparatus comprises a rim body made of metal.
  • the use of metal as material for the rim body has the advantage that the rim body can be formed with a sharp edge .
  • a second light source is arranged.
  • This provides the advantage that a higher light flux can be provided.
  • a further embodiment of the apparatus comprises an emitting face that has at least at one side a stepped rim body that defines a stepped beam cutting line of the emitting face. This embodiment provides the advantage that a precise shape of the illuminated area can be attained by a correspondingly shaped emitting face using the rim body.
  • first layer and the second layer are in contact at a contact face. Furthermore, the first and the second layer can be circumvented by the rim body. This embodiment provides a compact apparatus that is robust against damage.
  • the first layer is made of glass. Glass can easily be processed and provides a sufficient scattering function.
  • the light source is connected to a heat sink, wherein the heat sink is in particular a printed circuit board.
  • the connection between the light source and the heat sink has the advantage that generated heat can be easily passed to the heat sink without warming up the
  • the rim body is fixed to the first and/or the second layer by a glue, for example a silicone- type glue.
  • a glue for example a silicone- type glue.
  • the apparatus can for example be used as a head lamp of a motor car, a motor bike, a train or a bike.
  • Fig. 1 shows main parts of an apparatus for providing a light beam.
  • light sources 1 which may be embodied as light emitting diodes and/or laser diodes.
  • first layer 2 that is a homogeneity block.
  • the first layer 2 may for example be embodied as a glass layer.
  • the first layer 2 may be embodied as a silicone layer comprising scattering material.
  • Scattering material may for example be particles of titanium dioxide (Ti02) .
  • the function of the first layer 2 is to spread a light beam and to homogenize the light beam.
  • a second layer 3 comprising conversion material.
  • the second layer 3 is disposed to convert a wavelength of a light to another wavelength.
  • the conversion material is embodied to convert a wavelength of light to a longer wavelength of light.
  • the second layer 3 may comprise ceramics and a conversion material for example phosphor.
  • phosphors based on the (Gd, Y) 3 (Al , Ga) 5O12 : Ce system such as the Y 3 Al 5 0i 2 :Ce (YAG) may be used.
  • Fig. 1 shows a rim body 4 that is disposed for confining a light emitting face 5 of an apparatus for
  • the light emitting face 5 is confined by the circular rim body 4.
  • the rim body 4 may be embodied as a circular frame comprising an upper section, a lower section and two side sections.
  • the rim body 4 may have different shapes.
  • the rim body 4 may be embodied as a staged section as shown in Fig. 2.
  • the rim body 4 confines only an upper rim of the light emitting face 5.
  • the other rims of the light emitting face 5 may be confined by other material as indicated by a dashed line is shown in Fig. 2.
  • the rim body 4 may also be embodied as a straight stripe.
  • the rim body 4 may confine two sides of the emitting face 5 of the apparatus or three sides or four sides of the emitting face of the apparatus as shown in Fig. 1.
  • a main function of the rim body is to define a sharp beam cutting line of the emitting face 5. Therefore a precise confinement of the light emitting face 5 is attained.
  • the sharp beam cutting line generates a sharp beam area at least at a section of the rim area.
  • the apparatus may be embodied as a head lamp of a motor car or of a motor bike.
  • the rim body is made of metal or made of ceramic or other material.
  • the rim body 4 defines at least a part of a rim section of the emitting face. In the shown embodiment, the rim body 4 defines an upper rim section of the emitting face 5. Furthermore, the depicted embodiment of fig. 1 or fig. 2 shows a rim section that comprises a left rim section 6 and a right rim section 7. The left and the right rim section 6, 7 are connected by a middle section 8. In the shown embodiment, the left rim section 6 and the right rim section 7 are arranged in parallel. The middle rim section 8 is arranged perpendicular to the right and left rim section 7, 6.
  • Fig. 3 depicts a schematics top view of the apparatus 9.
  • the apparatus 9 comprises the light emitting face 5 that is encased by the rim body 4.
  • the second layer 3 is arranged adjacent to the light emitting face 5.
  • the first layer 2 is arranged.
  • the first layer 2 abuts to the second layer 3 at a contact face 10.
  • the contact face 10 is arranged in parallel to the light emitting face 5 that is defined by an outer face of the second layer 3.
  • the first layer 2 is encased by the rim body 4.
  • a free space 11 is arranged within the rim body 4 at a backside 12 of the first layer 2.
  • Several light sources 1 are arranged in the free space 11.
  • the light sources 1 may be fixed on a heat sink 13.
  • the heat sink 13 may be embodied as a printed circuit board.
  • the light emitting face 5 comprises in the shown embodiment a first part 14 and a second part 15.
  • the first part 14 has a smaller height than the second part 15 as can be seen in fig. 1.
  • a line 16 that separates the first part 14 from the second part 15 is arranged in parallel to the middle rim section 8 that can be seen in fig.l.
  • the rim body 4 may be fixed to the first and/or the second layer for example by a glue 20 i.e. a silicone-type glue.
  • Fig. 4 depicts a side view of the apparatus 9. There are light sources 1 which are arranged on different heights.
  • the first layer 2 may also be arranged adjacent to the light emitting face 5 and the second layer 3 may arranged between the first layer 2 and the light sources 1.
  • the apparatus 9 may be a head lamp of a motor car, a motor bike, a train or a bike.
  • optics i.e. lenses or not that can be additionally used to concentrate the light beam.
  • the light beam that is emitted by the light sources beams through the free space 11, the first layer 2 and the second layer 3.
  • the light emitting beam area is formed by the rim body 4. Because of the sharp beam cutting line that is generated by the rim body 4 there may be no further need for complex optical design to produce a desired illuminated area for example on a street.

Landscapes

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

Abstract

The apparatus provides a light beam, with a light source emitting a light, with a first layer and with a second layer, wherein the first layer comprises scattering material, wherein the scattering material scatters the light, wherein the second layer comprises conversion material, wherein the conversion material converts a wavelength of the light to another wavelength, wherein the first layer and the second layer are arranged in that way that the light goes successively through the two layers, wherein after the two layers a light beam leaves the apparatus via an emitting face, wherein a rim body is arranged that defines at least a part of a rim of the emitting face defining a sharp beam cutting line.

Description

Description
Apparatus for providing a light beam The invention refers to an apparatus for providing a light beam according to claim 1.
It is known in the state of the art to use an apparatus for providing a light beam, wherein the light beam is generated by a light emitting diode or a laser diode.
An object of the proposed invention is to provide an
apparatus with an improved light beam. The object of the invention is achieved by the apparatus according to claim 1.
Further embodiments of the apparatus are disclosed in the dependent claims.
An advantage of the apparatus is to define a sharp beam cutting line for the light beam. This advantage is generated by a rim body that defines a part of a rim of the emitting face of the apparatus. Therefore the light beam that is emitted via the emitting face of the apparatus defines a sharp beam cutting line. This is of advantage for an
application that should provide at least partly a sharp beam cutting line. This can be advantageous for a head lamp of a motor car or a motor bike. Because of the sharp beam cutting line the light beam illuminates a precise defined area.
An embodiment of the apparatus comprises a rim body that defines a circumferential rim around the emitting face. This apparatus provides a light beam with a circumferential sharp beam cutting line. This means that the light beam illuminates a precise defined area. In a further embodiment, the apparatus uses a light emitting diode or a laser diode as a light source. The light emitting diode and the laser diode have the advantage to provide a high light flux and to generate less heat.
A further embodiment of the apparatus comprises a rim body made of metal. The use of metal as material for the rim body has the advantage that the rim body can be formed with a sharp edge .
In a further embodiment of the apparatus a second light source is arranged. This provides the advantage that a higher light flux can be provided. A further embodiment of the apparatus comprises an emitting face that has at least at one side a stepped rim body that defines a stepped beam cutting line of the emitting face. This embodiment provides the advantage that a precise shape of the illuminated area can be attained by a correspondingly shaped emitting face using the rim body.
In a further embodiment, the first layer and the second layer are in contact at a contact face. Furthermore, the first and the second layer can be circumvented by the rim body. This embodiment provides a compact apparatus that is robust against damage.
In a further embodiment, the first layer is made of glass. Glass can easily be processed and provides a sufficient scattering function.
In a further embodiment, the light source is connected to a heat sink, wherein the heat sink is in particular a printed circuit board. The connection between the light source and the heat sink has the advantage that generated heat can be easily passed to the heat sink without warming up the
apparatus too much. Lower temperature in the apparatus preserves the light source. ^
In a further embodiment, the rim body is fixed to the first and/or the second layer by a glue, for example a silicone- type glue. The use of a glue for fixing means between the rim body and the first and the second layer provides a simple and cheap production of the apparatus.
The apparatus can for example be used as a head lamp of a motor car, a motor bike, a train or a bike. These
applications can use the precise shape of the illuminated area of the light beam.
Fig. 1 shows main parts of an apparatus for providing a light beam. There are some light sources 1 which may be embodied as light emitting diodes and/or laser diodes. Furthermore, there is a first layer 2 that is a homogeneity block. The first layer 2 may for example be embodied as a glass layer.
Furthermore, the first layer 2 may be embodied as a silicone layer comprising scattering material. Scattering material may for example be particles of titanium dioxide (Ti02) . The function of the first layer 2 is to spread a light beam and to homogenize the light beam. Furthermore, there is a second layer 3 comprising conversion material. The second layer 3 is disposed to convert a wavelength of a light to another wavelength. Usually the conversion material is embodied to convert a wavelength of light to a longer wavelength of light. For example the second layer 3 may comprise ceramics and a conversion material for example phosphor. For example phosphors based on the (Gd, Y) 3 (Al , Ga) 5O12 : Ce system, such as the Y3Al50i2:Ce (YAG) may be used. Furthermore EU doped
Silicate or TAG CE (Tb3Al50i2 : Ce) .
Additionally Fig. 1 shows a rim body 4 that is disposed for confining a light emitting face 5 of an apparatus for
providing a light beam. The light emitting face 5 is confined by the circular rim body 4. As shown in Fig. 1, the rim body 4 may be embodied as a circular frame comprising an upper section, a lower section and two side sections. Depending on the used embodiment, the rim body 4 may have different shapes. For example the rim body 4 may be embodied as a staged section as shown in Fig. 2. In this embodiment, the rim body 4 confines only an upper rim of the light emitting face 5. The other rims of the light emitting face 5 may be confined by other material as indicated by a dashed line is shown in Fig. 2. Furthermore, depending on the used embodiment, the rim body 4 may also be embodied as a straight stripe. Additionally the rim body 4 may confine two sides of the emitting face 5 of the apparatus or three sides or four sides of the emitting face of the apparatus as shown in Fig. 1. A main function of the rim body is to define a sharp beam cutting line of the emitting face 5. Therefore a precise confinement of the light emitting face 5 is attained. The sharp beam cutting line generates a sharp beam area at least at a section of the rim area. As a result, it is possible to confine precisely an illuminated area for example of a street that is illuminated by the apparatus that provides the light beam, for example the apparatus may be embodied as a head lamp of a motor car or of a motor bike. Depending on the used embodiment, the rim body is made of metal or made of ceramic or other material. In further embodiments, also other material may be used to fabricate the rim body 4. As shown in Fig. 2, the rim body 4 defines at least a part of a rim section of the emitting face. In the shown embodiment, the rim body 4 defines an upper rim section of the emitting face 5. Furthermore, the depicted embodiment of fig. 1 or fig. 2 shows a rim section that comprises a left rim section 6 and a right rim section 7. The left and the right rim section 6, 7 are connected by a middle section 8. In the shown embodiment, the left rim section 6 and the right rim section 7 are arranged in parallel. The middle rim section 8 is arranged perpendicular to the right and left rim section 7, 6. Fig. 3 depicts a schematics top view of the apparatus 9. The apparatus 9 comprises the light emitting face 5 that is encased by the rim body 4. The second layer 3 is arranged adjacent to the light emitting face 5. At an inner face of the second layer 3 the first layer 2 is arranged. In the shown embodiment, the first layer 2 abuts to the second layer 3 at a contact face 10. The contact face 10 is arranged in parallel to the light emitting face 5 that is defined by an outer face of the second layer 3. Also the first layer 2 is encased by the rim body 4. Additionally a free space 11 is arranged within the rim body 4 at a backside 12 of the first layer 2. Several light sources 1 are arranged in the free space 11. The light sources 1 may be fixed on a heat sink 13. The heat sink 13 may be embodied as a printed circuit board.
The light emitting face 5 comprises in the shown embodiment a first part 14 and a second part 15. The first part 14 has a smaller height than the second part 15 as can be seen in fig. 1. A line 16 that separates the first part 14 from the second part 15 is arranged in parallel to the middle rim section 8 that can be seen in fig.l. Depending on the used embodiment, the rim body 4 may be fixed to the first and/or the second layer for example by a glue 20 i.e. a silicone-type glue.
Fig. 4 depicts a side view of the apparatus 9. There are light sources 1 which are arranged on different heights.
Depending on the used embodiment, the first layer 2 may also be arranged adjacent to the light emitting face 5 and the second layer 3 may arranged between the first layer 2 and the light sources 1. The apparatus 9 may be a head lamp of a motor car, a motor bike, a train or a bike. Furthermore, depending on the used embodiment, there may be optics i.e. lenses or not that can be additionally used to concentrate the light beam. The light beam that is emitted by the light sources beams through the free space 11, the first layer 2 and the second layer 3. The light emitting beam area is formed by the rim body 4. Because of the sharp beam cutting line that is generated by the rim body 4 there may be no further need for complex optical design to produce a desired illuminated area for example on a street.
Reference numerals
1 light source
2 first layer
3 second layer
4 rim body
5 emitting face
6 left rim section
7 right rim section
8 middle rim section
9 apparatus
10 contact face
11 free space
12 backside
13 heat sink
14 first part
15 second part
16 line
17 first side
18 second side
19 bottom side
20 glue

Claims

Patent claims
Apparatus (9) for providing a light beam, with a light source (1) emitting a light, with a first layer (2) and with a second layer (3), wherein the first layer (2) comprises scattering material, wherein the scattering material scatters light, wherein the second layer (3) comprises conversion material, wherein the conversion material converts a wavelength of light to another wavelength, wherein the first layer (2) and the second layer (3) are arranged in that way in the apparatus (9) that the light goes successively through the two layers (2, 3), wherein after the two layers (2, 3) a light beam leaves the apparatus via an emitting face (5) , wherein a rim body (4) is arranged that defines at least a part of a rim of the emitting face (5) defining a sharp beam cutting line.
Apparatus of claim 1, wherein the rim body (4) defines a circumferential rim of the emitting face (5) .
Apparatus of one of the preceding claims, wherein the light source is a light emitting diode or a laser diode.
Apparatus of any one of the preceding claims, wherein the rim body is made of metal.
Apparatus of any one of the preceding claims, wherein a second light source (1) is arranged beside the light source ( 1 ) .
Apparatus of any one of the preceding claims, wherein the rim body (4) defines an upper rim section of the emitting face (5) , and wherein the upper rim section comprises a left and a right rim section (6, 7), wherein the left and the right rim sections (6, 7) are arranged in parallel and at different heights, wherein the left and the right rim sections (6, 7) are connected by a middle rim section (8), wherein the middle rim section (8) is in particular arranged vertical to the left and right rim section (6, 7) . 7. Apparatus of any one of the preceding claims, wherein the first and the second layer (2, 3) are in contact at a contact face (10), wherein the first and second layer are circumvented by the rim body (4) . 8. Apparatus of any one of the preceding claims, wherein the first layer (2) is made of glass.
9. Apparatus of any one of the preceding claims, wherein the second layer (3) is made of ceramic with phosphor.
10. Apparatus of any one of the preceding claims, wherein the at least one light source (1) is connected to a heat sink, wherein the heat sink is in particular a printed circuit board.
11. Apparatus of any one of the preceding claims, wherein between the light source (1) and the first layer (2) a free space layer (11) is arranged. 12. Apparatus of claim 11, wherein the free space (11), the first layer (2) and the second layer (3) are
circumvented by the rim body (4) .
13. Apparatus of any one of the preceding claims, wherein the rim body (4) is fixed to the first and/or the second layer by a glue (20), for example a silicone type glue.
14. Apparatus of any one of the preceding claims, wherein the apparatus (9) is a head lamp of a motor-car, a motor-bike, a train or a bike.
PCT/EP2015/055441 2015-03-16 2015-03-16 Apparatus for providing a light beam WO2016146161A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/055441 WO2016146161A1 (en) 2015-03-16 2015-03-16 Apparatus for providing a light beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/055441 WO2016146161A1 (en) 2015-03-16 2015-03-16 Apparatus for providing a light beam

Publications (1)

Publication Number Publication Date
WO2016146161A1 true WO2016146161A1 (en) 2016-09-22

Family

ID=52823598

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Application Number Title Priority Date Filing Date
PCT/EP2015/055441 WO2016146161A1 (en) 2015-03-16 2015-03-16 Apparatus for providing a light beam

Country Status (1)

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WO (1) WO2016146161A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040257827A1 (en) * 2003-06-20 2004-12-23 Koito Manufacturing Co., Ltd Vehicular lamp and light source module
US20050057917A1 (en) * 2003-09-17 2005-03-17 Yasushi Yatsuda Light source and vehicle lamp
US20080068856A1 (en) * 2004-08-06 2008-03-20 Koninklijke Philips Electronics, N.V. Led Light System
JP2008282575A (en) * 2007-05-08 2008-11-20 Stanley Electric Co Ltd Led lamp for head lamp light source
US20110222303A1 (en) * 2010-03-12 2011-09-15 Koito Manufacturing Co., Ltd. Vehicle headlamp
US20110235355A1 (en) * 2010-03-24 2011-09-29 Toshihiro Seko Semiconductor light-emitting device and manufacturing method
DE102012212244A1 (en) * 2012-07-12 2014-01-16 Osram Gmbh Vehicle illumination device i.e. headlight, for e.g. motor cars, has phosphor element converting primary light into secondary light, and comprising non-uniform edge section whose shape corresponds to non-uniform portion of cut-off lines
US20140301098A1 (en) * 2013-04-03 2014-10-09 Hon Hai Precision Industry Co., Ltd. Vehicle lamp system
DE102013107227A1 (en) * 2013-07-09 2015-01-15 Osram Opto Semiconductors Gmbh Conversion element with separation structure

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040257827A1 (en) * 2003-06-20 2004-12-23 Koito Manufacturing Co., Ltd Vehicular lamp and light source module
US20050057917A1 (en) * 2003-09-17 2005-03-17 Yasushi Yatsuda Light source and vehicle lamp
US20080068856A1 (en) * 2004-08-06 2008-03-20 Koninklijke Philips Electronics, N.V. Led Light System
JP2008282575A (en) * 2007-05-08 2008-11-20 Stanley Electric Co Ltd Led lamp for head lamp light source
US20110222303A1 (en) * 2010-03-12 2011-09-15 Koito Manufacturing Co., Ltd. Vehicle headlamp
US20110235355A1 (en) * 2010-03-24 2011-09-29 Toshihiro Seko Semiconductor light-emitting device and manufacturing method
DE102012212244A1 (en) * 2012-07-12 2014-01-16 Osram Gmbh Vehicle illumination device i.e. headlight, for e.g. motor cars, has phosphor element converting primary light into secondary light, and comprising non-uniform edge section whose shape corresponds to non-uniform portion of cut-off lines
US20140301098A1 (en) * 2013-04-03 2014-10-09 Hon Hai Precision Industry Co., Ltd. Vehicle lamp system
DE102013107227A1 (en) * 2013-07-09 2015-01-15 Osram Opto Semiconductors Gmbh Conversion element with separation structure

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