公开(公告)号：US10569711B2

公开(公告)日：2020-02-25

申请号：US15769374

申请日：2016-09-13

申请人： ZKW Group GmbH

发明人： Georg Hebenstreit

IPC分类号： B60Q11/00 ,  F21S45/70 ,  F21S41/176 ,  F21S41/16 ,  F21S41/14 ,  F21S41/147 ,  F21S45/00

摘要： The invention relates to a monitoring apparatus for monitoring the operating state of a laser vehicle headlamp (4), wherein the laser vehicle headlamp (4) comprises at least one laser light source (5) and a light conversion element (6) that can be illuminated by the laser light source (5) and therefore can be excited to emit visible light, wherein the monitoring apparatus has at least one photosensitive device (3) and one comparison device (1), wherein the photosensitive device (3) comprises at least one LED (D1) that is set up to convert light received from the laser light source (5) into an electrical signal (UD) that is supplied to the comparison device (1), wherein the comparison device (1) is set up to compare the electrical signal (UD) with a preselectable value and to output a fault signal (U0) on the basis of the result of the comparison.

公开(公告)号：US20190323678A1

公开(公告)日：2019-10-24

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 ,  F21V23/00 ,  F21S41/16 ,  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：US10330275B2

公开(公告)日：2019-06-25

申请号：US16000900

申请日：2018-06-06

申请人： Osram GmbH

发明人： Jan Oliver Drumm ,  Michael Rosenauer ,  Benjamin Dollinger

IPC分类号： F21S41/00 ,  F21S41/32 ,  G02B5/20 ,  G02B5/30 ,  G02B27/09 ,  F21S41/16 ,  F21S41/176 ,  F21S45/70

摘要： A lighting apparatus includes a light source for emitting an illumination light, a micromirror array having a plurality of micromirror actuators, and an illumination optical unit and an optical sensor unit. The illumination light emitted by the light source is guided onto the micromirror actuators and reflected at the latter and, with the reflection integrated over time, an on beam is reflected to a lighting application by the micromirror actuators in a respective on tilt position via the illumination optical unit, and an off beam is reflected next to the illumination optical unit by the micromirror actuators in a respective off tilt position. Part of the illumination light contained in the off beam is guided, at least in part, onto the optical sensor unit.

公开(公告)号：US10738987B2

公开(公告)日：2020-08-11

申请号：US16046681

申请日：2018-07-26

申请人： NICHIA CORPORATION

发明人： Wataru Kuribayashi ,  Takashi Miyoshi ,  Naoto Morizumi

IPC分类号： F21V29/10 ,  F21K9/64 ,  H01S5/06 ,  H01L31/147 ,  F21V23/04 ,  H01S5/022 ,  F21V3/08 ,  H01S5/00 ,  F21Y115/30 ,  F21S41/176 ,  F21V5/00 ,  F21S45/70 ,  H01S5/323 ,  H01S5/0683 ,  F21S41/16 ,  H01S5/068

摘要： A light emitting device includes a semiconductor light emitting element to emit an excitation light, a wavelength converting member to emit fluorescent light upon being irradiated with the excitation light, a package supporting the semiconductor light emitting element and the wavelength converting member, and a first photodetector configured to detect the excitation light and a second photodetector to detect the fluorescent light, located in the package.

公开(公告)号：US20200248885A1

公开(公告)日：2020-08-06

申请号：US16856051

申请日：2020-04-23

申请人： NICHIA CORPORATION

发明人： Takuya SUZUKI ,  Takashi MUKAI

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

摘要： A light emitting module includes a laser element and a conversion member to convert a laser beam in a light having a different wavelength from a wavelength of the laser beam. A first FET includes a first gate. A second FET includes a second gate. A first transistor is serially connected to the second FET at a first connection node that is connected to the first gate. A sensing wire is provided on the conversion member. A second resistor is serially connected to the sensing wire at a second connection node that is connected to the second gate.

公开(公告)号：US10598327B2

公开(公告)日：2020-03-24

申请号：US16096594

申请日：2017-04-18

申请人： Lumileds LLC

发明人： Steffen Zozgornik

IPC分类号： F21S41/176 ,  F21S41/16 ,  F21S41/24 ,  G02B6/42 ,  F21K9/64 ,  F21V8/00 ,  H01S5/00 ,  H01S5/022 ,  F21S45/70 ,  H01S5/068 ,  H01S5/0683

摘要： A laser-based light source comprises a laser, an optical fiber, a conversion device, and a detector, the laser for emitting laser light with a laser peak emission wavelength, the optical fiber for guiding the laser light for being received at a first surface of the conversion device, the conversion device for converting at least a part of the laser light to converted light with a peak emission wavelength being longer than the laser peak emission wavelength, the optical fiber further for guiding a part of the converted light back in the direction of the laser and the detector for detecting at least a part of the back guided converted light. A vehicle headlight comprises such a laser-based light source, and a lighting system comprises such a vehicle headlight.

公开(公告)号：US20190323677A1

公开(公告)日：2019-10-24

申请号：US16389431

申请日：2019-04-19

申请人： Lumileds Holding B.V.

发明人： Hans Helmut BECHTEL ,  Thomas DIEDERICH

IPC分类号： F21S45/70 ,  F21S41/16 ,  F21S41/176 ,  F21S41/675

摘要： A laser lighting module for a vehicle headlight includes at least one laser, a scanning arrangement, a light conversion device, a safety mirror, a safety detector and a safety controller. The laser emits light in a first wavelength range and the scanning arrangement moves a beam of the light within a scanning solid angle so a spot of the light moves across the light conversion device. The light conversion device converts a fraction of the light to converted light in a different wavelength range than the first and emits a mixture of transmitted and converted light. The safety mirror is arranged within the scanning solid angle such that at least 90% of the transmitted light hits the safety mirror. The safety controller receives the control signal, generated by the safety detector from the safety detection light, and switches off the laser if the control signal exceeds a first threshold value.

公开(公告)号：US10414328B2

公开(公告)日：2019-09-17

申请号：US15855685

申请日：2017-12-27

申请人： LG Electronics Inc.

发明人： Cheolmun Kim ,  Seongju Ha ,  Kihoon Han

IPC分类号： B60Q1/00 ,  B60Q1/14 ,  F21S41/16 ,  B60Q11/00 ,  F21S45/70

摘要： A lamp for a vehicle includes a laser diode configured to output light, an interface configured to communicate with a brake device of the vehicle, and at least one processor coupled to the interface and configured to receive brake operation information from the brake device via the interface, and control a light output of the laser diode based on the brake operation information.

公开(公告)号：US20190212002A1

公开(公告)日：2019-07-11

申请号：US15864044

申请日：2018-01-08

申请人： TRIDONIC GMBH & CO KG

发明人： Karl Jonsson

IPC分类号： F21V23/04 ,  F21S41/14 ,  F21S45/70 ,  G02B5/28 ,  G02B13/14 ,  H01S3/00

CPC分类号： F21V23/0442 ,  F21S41/14 ,  F21S41/16 ,  F21S41/176 ,  F21S45/70 ,  F21V9/30 ,  G02B5/282 ,  G02B13/146 ,  H01S3/0071 ,  H01S5/005 ,  H01S5/06825

摘要： A luminaire includes a phosphor that emits non-coherent, visible light when excited, a laser diode that emits a laser beam to excite the phosphor, and a driver that outputs electrical DC power at or above the voltage level necessary to drive the laser diode. The current output from the driver to the laser diode is modulated with a code, preferably a random generated code. A visible light sensor detects light emitted from the phosphor and provides a feedback signal, which contains the code under normal operation. If the proper code is not detected in the feedback signal, power output to the laser diode is immediately ceased or reduced to a level safe for the human eye.

公开(公告)号：US20230029917A1

公开(公告)日：2023-02-02

申请号：US17758033

申请日：2020-12-16

申请人： Ichikoh Industries, Ltd.

发明人： Yoshiro SATO ,  Alejandro DE-ARRIBA ,  Takaaki TSUCHIYA

IPC分类号： B60Q1/26 ,  B60Q1/30 ,  B60Q1/28 ,  F21S45/70

摘要： When light is off, a transparent appearance is obtained, while when the light is on, light is seen through a transparent spot. The present invention includes a light source portion and a reflective portion. The light source portion emits light. The light source portion is disposed at a position shifted with respect to an emitting direction of emitted light from the reflective portion. The reflective portion reflects the light from the light source portion and emits it in a predetermined direction. The reflective portion is constituted by a transparent member with a refractive index at least in a visible light area larger than 1. As a result, in the present invention, the transparent appearance is obtained when the light is off, while the light is seen through the transparent spot when the light is on.