公开(公告)号：US10670223B2

公开(公告)日：2020-06-02

申请号：US16390000

申请日：2019-04-22

申请人： NICHIA CORPORATION

发明人： Takuya Suzuki ,  Takashi Mukai

IPC分类号： F21S45/70 ,  F21S41/176 ,  F21S41/16 ,  F21V23/00 ,  F21V23/04

摘要： A light emitting module includes a laser element and a first transistor including a first electrode connected to the laser element, a second electrode connected to a power supply, and a control electrode. A second transistor includes a first electrode connected to a second reference potential via a first resistor, a second electrode connected to a first reference potential, and a control electrode. The control electrode of the first transistor is connected to the first electrode of the second transistor and the first resistor. A conversion member is to convert a laser beam emitted by the laser element and includes a sensing wire via which the control electrode of the second transistor is connected to a third reference potential. The control electrode of the second transistor is connected to a fourth reference potential via a second resistor.

公开(公告)号：US10648911B2

公开(公告)日：2020-05-12

申请号：US15814828

申请日：2017-11-16

申请人： NICHIA CORPORATION

发明人： Toshiaki Yamashita

IPC分类号： H01L33/00 ,  G01N21/64 ,  H01S5/022 ,  H01S5/40 ,  F21K9/64 ,  H01S5/00 ,  F21S41/16 ,  F21V9/30 ,  F21S41/176 ,  H01L33/50 ,  F21Y115/30

摘要： A light emitting device includes a fluorescent material, a first laser element and a second laser element. The first laser element is configured to emit a first laser light to excite the fluorescent material. The first laser light having a first peak wavelength that is shorter than an excitation peak wavelength of the fluorescent material. The second laser element is configured to emit a second laser light to excite the fluorescent material. The second laser light has a second peak wavelength that is longer than the excitation peak wavelength of the fluorescent material.

公开(公告)号：US10606158B2

公开(公告)日：2020-03-31

申请号：US16077962

申请日：2017-03-06

申请人： SIGNIFY HOLDING B.V.

发明人： Hendrik Johannes Boudewijn Jagt ,  Dominique Maria Bruls ,  Daniël Anton Benoy ,  Dirk Kornelis Gerhardus De Boer ,  Hugo Johan Cornelissen ,  Joris Jan Vrehen ,  Jacobus Gerardus Boerekamp ,  Christoph Gerard August Hoelen

IPC分类号： G03B21/20 ,  F21V29/70 ,  F21V29/502 ,  F21K9/64 ,  F21V9/30 ,  F21S41/16 ,  H01S5/00 ,  F21S41/176 ,  F21S41/20 ,  G03B21/16 ,  F21V7/00 ,  F21V5/00 ,  F21Y101/00 ,  F21V7/22 ,  H01S5/40 ,  H01S5/323

摘要： A light emitting device (1) comprising a luminescent element (3) comprising a first face (31) and a second face (32), the first face comprising a light input surface and one of the first face and the second face comprising a light exit surface, the luminescent element (3) being adapted for receiving first light (4) with a first spectral distribution emitted by at least one laser light source (21, 22, 23) at the light input surface, converting at least a part of the first light with the first spectral distribution to second light (5) with a second spectral distribution, guiding the second light with the second spectral distribution to the light exit surface and coupling at least a part of the second light with the second spectral distribution out of the light exit surface, and a heat sink element (7) arranged to be in thermal contact with at least a part of the luminescent element (3) extending between the first face (31) and the second face (32), wherein the first face (31) comprises a cross-sectional area A and the luminescent element (3) further comprises a length L being defined as the shortest distance between the first face and the second face and a characteristic length B of the cross sectional area A, the characteristic length B being defined as the square root of the cross sectional area A, and wherein, and wherein the length L and the characteristic length B of the cross sectional area A are chosen such that they satisfy any one of the relations L/B≥2*Ells/44(W/mm2) for λTHC

公开(公告)号：US20200088372A1

公开(公告)日：2020-03-19

申请号：US16470898

申请日：2017-12-12

申请人： Lumileds LLC

发明人： Steffen Zozgornik

IPC分类号： F21S41/16 ,  F21S41/20

摘要： The invention describes a laser lighting module for a vehicle headlight comprising a laser for emitting laser light, a light conversion device, and a holographic optical device for transforming part of the laser light to first transformed laser light and focusing that on the light conversion device for converting the first transformed laser light to converted light. The holographic optical device is transparent to the converted light, and transforms another part of the laser light to second transformed laser light which is mixed with the converted light after the latter has been transmitted through the holographic optical device. The invention further describes a vehicle headlight comprising at least one such laser lighting module.

公开(公告)号：US10591129B2

公开(公告)日：2020-03-17

申请号：US15857675

申请日：2017-12-29

申请人： VALEO VISION

发明人： Pierre Albou

IPC分类号： F21V11/00 ,  F21S41/20 ,  F21S45/43 ,  F21S41/14 ,  F21S41/663 ,  B60Q1/08 ,  F21S41/60 ,  F21S41/155 ,  F21S41/176 ,  F21S41/153 ,  F21S45/70 ,  F21K9/64 ,  F21S41/16 ,  F21S41/125 ,  F21S41/65 ,  B60Q1/14 ,  B60Q1/20 ,  F21S45/47

摘要： The lighting device for a vehicle has two light sources and a wavelength conversion device excited by the combination of the radiations from the two light sources. A first light source is associated with a scanning system projecting, by scanning, a first light radiation onto a first conversion region of the device, while a second light source with semiconductors emits a second light radiation into a second conversion region of the device. The second source, different from the first source and whose luminance level is typically less high, is provided with light-emitting units of submillimetric dimensions. The beams produced by the device respectively in the first region and in the second region have different characteristics and complement one another to produce one or more lighting functions.

公开(公告)号：US20200063933A1

公开(公告)日：2020-02-27

申请号：US16609556

申请日：2018-05-18

申请人： Dai Nippon Printing Co., Ltd.

发明人： Shumpei NISHIO ,  Makio KURASHIGE

IPC分类号： F21S41/16 ,  F21S41/40 ,  G02B5/32 ,  F21S41/675 ,  F21S41/20

摘要： A coherent light beam from a light source is scanned by a scanning member and is incident to a light receiving surface of a light diffusing element. The incident light beam is emitted as diffused light, passes through an illumination optical system, and forms a drawing spot on an illumination target surface. When a scan control unit controls scanning of the light beam, an illumination area is formed by the moving drawing spot on the illumination target surface.

公开(公告)号：US20200049317A1

公开(公告)日：2020-02-13

申请号：US16530368

申请日：2019-08-02

申请人： SHARP KABUSHIKI KAISHA

发明人： KOJI TAKAHASHI ,  KARL PETER WELNA

IPC分类号： F21K9/64 ,  F21K9/68 ,  F21K9/61 ,  F21S41/16 ,  F21S41/176 ,  F21S41/365 ,  F21S41/40

摘要： [Object] External leakage of laser light can be prevented in a reflective type light source device.[Solution] Laser light excites a first surface (21) of a phosphor light-emitting section. (20), and a window portion (30) formed of a transparent member disposed spaced away from the first surface (21) is provided. A light leakage prevention portion (600), which inhibits the laser light reflected at the first surface (21) of the phosphor light-emitting section (20) from leaking to the outside through the window portion (30) is provided to part of the window portion (30).

公开(公告)号：US20200041084A1

公开(公告)日：2020-02-06

申请号：US16601424

申请日：2019-10-14

申请人： Young Optics Inc.

发明人： JYH-HORNG SHYU

IPC分类号： F21S41/14 ,  F21S41/16 ,  F21S41/675 ,  F21S41/20 ,  F21S41/143

摘要： A vehicle lighting system includes a light processing unit, a non-uniform projection unit, a sensing unit, a judgment unit, and an operation unit. The light processing unit is capable of changing an intensity profile of a light beam, and the judgment unit receives an image signal from the sensing unit to determine whether to change the intensity profile of the light beam according to the image signal. When the intensity profile needs to be changed in accordance with the judgment result, the operation unit calculates out a desired intensity profile and outputs a control signal containing information about the desired intensity profile to the light processing unit, and the light processing unit changes the intensity profile of the light beam according to the control signal and sends out the light beam with the desired intensity profile.

公开(公告)号：US10547157B2

公开(公告)日：2020-01-28

申请号：US14610881

申请日：2015-01-30

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Mario Werkstetter

IPC分类号： H01S5/068 ,  H01S5/026 ,  F21S41/14 ,  F21S41/60 ,  F21S41/16 ,  H01S5/042 ,  F21W102/00 ,  H01S5/06

摘要： A control apparatus for driving a laser diode comprises an output connection for connecting the laser diode, a regulation device for generating an output signal, a detector device which is designed to determine a regulation variable when the regulation device provides the output signal and the laser diode is connected to the output connection. The control apparatus furthermore comprises a computer device for providing a control signal for the regulation device, wherein the computer device provides the control signal independently of the regulation variable. The regulation device is designed in such a way that it generates a level for the output signal depending on the control signal and the determined regulation variable.

公开(公告)号：US10533723B2

公开(公告)日：2020-01-14

申请号：US15816044

申请日：2017-11-17

申请人： LG Electronics Inc.

发明人： Oklyeol Lee ,  Sulki Park

IPC分类号： F21S41/25 ,  F21V29/51 ,  F21V29/76 ,  F21S43/37 ,  F21S41/20 ,  F21S41/29 ,  F21S43/40 ,  F21S43/27 ,  F21S45/47 ,  F21S41/39 ,  F21S43/20 ,  F21S41/16 ,  F21S41/176 ,  B60Q1/04 ,  B60Q1/34 ,  B60Q1/44

摘要： A light lamp for a vehicle includes a plurality of light function modules, each of the plurality of light function modules including: a light source module including: a light source configured to generate light; a light source lens disposed in front of the light source; and a reflection unit provided on a part of a front surface of the light source lens; a light distribution module disposed in front of the light source module and configured to receive the light from the light source module and to distribute the received light; and a dissipation module disposed behind the light source module and configured to dissipate heat generated by the light source.