公开(公告)号：US20240314901A1

公开(公告)日：2024-09-19

申请号：US18678809

申请日：2024-05-30

申请人： OLYMPUS MEDICAL SYSTEMS CORP.

发明人： Koji MATSUMOTO ,  Masahiro NISHIO ,  Kazuto FUJIWARA

IPC分类号： H05B45/18 ,  F21V9/45 ,  F21Y113/17 ,  F21Y115/10 ,  G01J3/02 ,  G01J3/30 ,  G01J3/51 ,  H05B45/28

CPC分类号： H05B45/18 ,  F21V9/45 ,  G01J3/0286 ,  G01J3/30 ,  G01J3/51 ,  H05B45/28 ,  F21Y2113/17 ,  F21Y2115/10

摘要： A light source device includes light sources, a light output unit, optical filters, temperature sensors detecting current temperatures of the sources, light quantity sensors detecting current light quantities of light beams before traveling through the filters, a storage, and a processor. The storage stores first correlation information between the temperatures of the sources and spectral information and second correlation information between the spectral information and light quantity of light at the unit. The processor is configured to calculate a variation in the spectral information based on each current temperature and the first information, calculate a variation in the light quantity of the light at the unit caused by a change in the spectral information based on the variation in the spectral information and the second information, and calculate a light-quantity correction amount for each of the sources based on the variation in the light quantity and the current light quantity.

公开(公告)号：US11965822B2

公开(公告)日：2024-04-23

申请号：US17761377

申请日：2021-05-18

申请人： MEGA CRYSTAL BIOTECHNOLOGY SINGAPORE PTE. LTD

发明人： Yi-Sheng Ting ,  Yu-Tsung Chen

IPC分类号： G01N21/25 ,  G01N21/359 ,  G01N21/39 ,  H05B45/18

CPC分类号： G01N21/255 ,  G01N21/359 ,  G01N21/39 ,  H05B45/18 ,  G01N2201/0694 ,  G01N2201/121 ,  G01N2201/125

摘要： A light emitting apparatus has light emitting units. The light emitting units can be respectively provided with current densities, so that the light emitted by each of the light emitting unit has a light intensity, wherein the current densities are different from each other, or partial of the current densities are different from each other. A number of the light emitting units can be larger than or equal to four, all of the four lighting frequencies of the four light emitting units are different from each other, or partial of the four lighting frequencies of the four light emitting units are identical to each other, and the light emitting apparatus and the object under test rotate relative to each other. A light emitting method, a spectrum detection method and a lighting correction method are also illustrated for increasing SNR, correcting the light intensity or the spectrum signal.

公开(公告)号：US11945363B2

公开(公告)日：2024-04-02

申请号：US18253725

申请日：2021-11-22

申请人： VALEO VISION

发明人： Hafid El Idrissi ,  Rabih Taleb

IPC分类号： H05B45/18 ,  B60Q1/04 ,  B60Q1/14 ,  H05B47/155

CPC分类号： B60Q1/0408 ,  B60Q1/1423 ,  H05B45/18 ,  H05B47/155 ,  B60Q2300/05

摘要： A method for operating an automotive lighting device including providing a first preliminary current profile, calculating a first preliminary derating time associated to the first preliminary current profile, providing a second preliminary current profile, calculating a second preliminary derating time associated to the second preliminary current profile, feeding the first light module with a first current profile which provides a total amount of current lower than the first preliminary amount of current, and feeding the second light module with a second current profile which provides a total amount of current higher than the second preliminary amount of current.

公开(公告)号：US20240057230A1

公开(公告)日：2024-02-15

申请号：US18384919

申请日：2023-10-30

申请人： LEDVANCE GmbH

发明人： Alexander Niggebaum ,  Krister Bergenek ,  David Chilachava

IPC分类号： H05B45/18 ,  H05B47/19 ,  H05B45/345 ,  H05B47/18

CPC分类号： H05B45/18 ,  H05B47/19 ,  H05B45/345 ,  H05B47/18

摘要： A driver expansion module for retrofitting a driver with at least one adjustable output parameter is provided. The driver expansion module comprises an interface for connecting the driver expansion module to the driver, and a control unit, wherein the control unit is configured to send a control signal to a control input of the driver to adjust the at least one output parameter of the driver. A driver is further provided, as well as a driver system and a light management system.

公开(公告)号：US11864280B2

公开(公告)日：2024-01-02

申请号：US17451248

申请日：2021-10-18

申请人： AES Global Holdings PTE Ltd.

发明人： Liran Katzir ,  Tal Tayar ,  Nikolay Truchni ,  Dror Salony

IPC分类号： H05B45/14 ,  H05B45/18 ,  H05B45/3725 ,  H04N23/74

CPC分类号： H05B45/14 ,  H04N23/74 ,  H05B45/18 ,  H05B45/3725

摘要： A charge voltage calibration system comprises a power supply, a light string, a driver, and a calibration circuit. The driver comprises a capacitor, a switch, and a sense resistor. The switch, sense resistor, and light string are coupled in series to form a discharge path coupled in parallel with the capacitor. The calibration circuit comprises a controller, a DAC, a comparator, a memory device. The controller is configured to control the DAC to provide a reference voltage to the comparator, cause the power converter to supply a first charge voltage to the driver, cause the switch to transition from an off state to an on state to discharge stored energy in the capacitor through the discharge path, and store a value of the first charge voltage in the memory device in response to detection of voltage generated across the sense resistor being greater than or equal to the reference voltage.

公开(公告)号：US11825575B2

公开(公告)日：2023-11-21

申请号：US17013978

申请日：2020-09-08

申请人： Microchip Technology Incorporated

发明人： Josh Averyt ,  Shannon Cash ,  Matthew Kalibat

IPC分类号： H05B45/18 ,  H05B45/325 ,  B60Q3/18 ,  B60K37/02

CPC分类号： H05B45/325 ,  B60K37/02 ,  B60Q3/18 ,  H05B45/18 ,  B60K2370/332 ,  B60K2370/349

摘要： A PWM lighting bridge manages hardware PWM compensation components. One or more PWM outputs are driven based upon a master PWM input signal. The master PWM input signal is processed through a mapping function to produce a desired output signal(s) on the one or more PWM outputs. The mapping function comprises a set of compensation bins having a maxim input duty cycle, a minimum input duty cycle and an output duty cycle. The mapping process selects a bin based on determining whether the input duty cycle is within the minimum and maximum duty cycle ranges of the bins and then uses the specified output duty cycle for the one or more PWM outputs. The PWM lighting bridge provides configuration and runtime management of the hardware PWM compensation components. Read/write access to the PWM compensation bins provides customizable configurations of the input and output PWM characteristics.

公开(公告)号：US20230345597A1

公开(公告)日：2023-10-26

申请号：US17728868

申请日：2022-04-25

申请人： Fuzhou Sen Yin line Information Technology Co., Ltd.

发明人： ZEAN SU

IPC分类号： H05B45/18 ,  H05B45/28

CPC分类号： H05B45/18 ,  H05B45/28 ,  G01K7/34

摘要： A device and method for adjusting light according to temperature, the device comprises a temperature detection circuit, a control circuit, a drive circuit and a light-emitting circuit, wherein the control circuit is respectively connected with the temperature detection circuit and the drive circuit, the drive circuit is connected with the light-emitting circuit; the temperature detection circuit is configured to detect the temperature information of a target device, and convert the temperature information into a feedback signal; the control circuit is configured to adjust a driving signal input to the drive circuit according to the feedback signal; the drive circuit is configured to adjust a light-emitting state of the light-emitting circuit according to the driving signal. The color, the intensity changes, and a periodic on or off of the light are adjusted according to the temperature which could present a dynamic effect and is full of life interest.

公开(公告)号：US20240334580A1

公开(公告)日：2024-10-03

申请号：US18579622

申请日：2022-06-22

申请人： KOITO MANUFACTURING CO., LTD.

发明人： Shohei Yanagizu ,  Yu Ota

IPC分类号： H05B47/28 ,  H05B45/18 ,  H05B45/305 ,  H05B45/3725 ,  H05B45/46 ,  H05B47/165

CPC分类号： H05B47/28 ,  H05B45/18 ,  H05B45/305 ,  H05B45/3725 ,  H05B45/46 ,  H05B47/165

摘要： A lamp includes a power supply circuit, a light source, a control unit, a first temperature detection circuit, and a second temperature detection circuit. The power supply circuit is provided on a first substrate and configured to generate a predetermined voltage based on a power supply voltage. The light source, which is provided on a second substrate, includes a plurality of light-emitting elements and an adjustment unit configured to adjust a drive current flowing through each of the plurality of light-emitting elements, and uses the predetermined voltage as a power supply. The control unit is provided on a third substrate and configured to control the adjustment unit. The first temperature detection circuit is provided on the first substrate and configured to detect a temperature. The second temperature detection circuit is provided on the second substrate and configured to detect a temperature. The control unit is configured to control the adjustment unit based on a detection result having a higher temperature of detection results of the first and second temperature detection circuits and a signal indicating a turn-on condition of the plurality of light-emitting elements.

公开(公告)号：US12089307B2

公开(公告)日：2024-09-10

申请号：US17824805

申请日：2022-05-25

申请人： Lumileds LLC

发明人： Ronald Johannes Bonne ,  Zhi Hua Song

IPC分类号： H05B45/3725 ,  G09G3/32 ,  H01L27/15 ,  H05B45/18 ,  H05B45/325 ,  H05B45/44 ,  H05B47/165

CPC分类号： H05B45/3725 ,  G09G3/32 ,  H01L27/156 ,  H05B45/18 ,  H05B45/325 ,  H05B45/44 ,  H05B47/165 ,  G09G2330/028 ,  G09G2330/12 ,  G09G2380/10

摘要： A lighting system includes an LED array having a plurality of LED pixels and a power controller. The power controller adjusts a supply voltage for powering the LED pixels based on one or more conditions of the LED array. The power controller may determine the supply voltage based on process data of the LED array. The power controller may adjust the supply voltage based on an operating temperature of the LED pixels and the amplitude of a current driving the LED pixels.

公开(公告)号：US12048073B2

公开(公告)日：2024-07-23

申请号：US17867870

申请日：2022-07-19

申请人： KOITO MANUFACTURING CO., LTD.

发明人： Tomoyuki Ichikawa ,  Toru Ito ,  Atsushi Ozawa

IPC分类号： H05B45/18 ,  H05B45/345

CPC分类号： H05B45/18 ,  H05B45/345

摘要： An automotive lamp includes a temperature-sensing element having an electrical state that changes according to the temperature T of a semiconductor light source, and a constant current driver that generates a driving current ILED that corresponds to the temperature T. The maximum value of the temperature differential of the driving current ILED in a first temperature range from a reference temperature T0 to a first temperature T1 (T1>T0) is smaller than the maximum value of the temperature differential of the driving current ILED in a second temperature range from the first temperature T1 to a second temperature T2 (T2>T1).