Patents Assigned to Ledvance GmbH
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Patent number: 11664478Abstract: An LED light with an LED module which has one or more LEDs and an LED driver for power supply to the LEDs. The LED module is at least partially coated with a photoluminescent phosphor, which is configured for absorption of light energy from the LEDs and time-delayed emission of the stored light energy, and the LED driver has at least one electronic component for smoothing the current to be output to the LEDs.Type: GrantFiled: February 19, 2020Date of Patent: May 30, 2023Assignee: LEDVANCE GMBHInventor: Georg Rosenbauer
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Patent number: 11655972Abstract: An LED illumination device corresponds to a compact fluorescent lamp and has improved thermal properties. The illumination device includes a transparent tube having an inner wall defining a cavity, a light engine having one or more light emitting diodes, and a driver to drive the light engine. The light engine is disposed at the inner wall of the transparent tube. The arrangement of the light engine and the one or more light emitting diodes at the inner wall of the tube provides improved lighting characteristics. Simultaneously, an improved cooling is provided by the interface surface for conducting heat between the inner wall and the light engine.Type: GrantFiled: September 12, 2018Date of Patent: May 23, 2023Assignee: LEDVANCE GMBHInventors: Ran Lin, Bernhard Rieder, Shaozhu Yang
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Patent number: 11647573Abstract: A ripple reduction circuit for reducing a current ripple of a driver is provided. The driver circuit comprises an input section with input contacts for connecting the driver circuit to an AC power supply providing an AC input current and a power section for providing an output power, the power section comprising a power transformer and a power switch connected in series with a primary winding of the power transformer. The driver circuit further comprises a ripple reduction circuit with an inductance and a capacitive and two diodes, the ripple reduction circuit being configured such that, in operation, the inductance and the capacitance can be alternately charged and discharged, depending on the switching state of the power switch.Type: GrantFiled: January 11, 2022Date of Patent: May 9, 2023Assignee: LEDVANCE GMBHInventors: Shijun Nie, Shaoping Chen
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Patent number: 11611183Abstract: A lamp socket for a lamp base, in particular a pin-based lamp base, is provided. The lamp socket comprises an electrically insulating housing having a cavity that is entirely framed by the housing in lateral directions, wherein the cavity is adapted for receiving a connector casing of the lamp base, wherein a bottom of the cavity comprises a receptacle for receiving a connector pin of the lamp base, and wherein a height of the cavity corresponds to at least a length of the connector pin.Type: GrantFiled: July 27, 2017Date of Patent: March 21, 2023Assignee: LEDVANCE GMBHInventors: Tianzheng Jiang, Bangzhou Liang
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Patent number: 11612040Abstract: A dynamic light control method for controlling at least one adjustable illumination parameter at a target location has been suggested. The method comprises setting the value of at least one adjustable illumination parameter at a first predetermined level, maintaining the value of the at least one adjustable illumination parameter at the first predetermined level for a first predetermined time period, varying the value of the at least one adjustable illumination parameter from the first predetermined level to a second predetermined level, maintaining the value of the at least one adjustable illumination parameter at the second level for a second predetermined time period, and varying the value of the at least one adjustable illumination parameter from the second level to a third predetermined level, wherein the varying the at least one adjustable illumination parameter comprises monotonously varying the at least one adjustable illumination parameter with a predefined maximum variation rate.Type: GrantFiled: February 19, 2021Date of Patent: March 21, 2023Assignee: LEDVANCE GMBHInventors: Shaoping Chen, Dandan Hou, Huaming Chen, Yandan Lin
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Patent number: 11570863Abstract: A lighting device for generating a white mixed light having controllable spectral characteristics is provided. The lighting device comprises a number of white light sources for each making a contribution to the white mixed light by generating a white light with a respective spectral expression in each case that can be quantitatively characterized, so that the white lights generated by the white light sources can form corner points of a target range for the resulting mixed light in a spectral light parameter space. The lighting device further comprises control electronics for controlling proportional contributions of the white light sources so that the position corresponding to the resulting mixed white light can be varied within the target area spanned on the corner points in the spectral light parameter space.Type: GrantFiled: February 14, 2022Date of Patent: January 31, 2023Assignee: LEDVANCE GMBHInventor: Krister Bergenek
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Patent number: 11563286Abstract: A lighting device contains a first circuit board and a second circuit board. The first circuit board has one or more connecting sections having overall at least two contact areas. The second circuit board has an opening through which the connecting section of the first circuit board can extend. At least two contact elements, which are electrically connected to conductive tracks of the second circuit board, are arranged on the second circuit board. Each contact element has a contact region by which the contact element butts against one of the contact areas of the first circuit board. As a result, an electrical connection is produced between the two circuit boards.Type: GrantFiled: January 24, 2019Date of Patent: January 24, 2023Assignee: LEDVANCE GMBHInventors: Klaus Eckert, Markus Hofmann, Thomas Klafta, Andreas Lovich, Henrike Streppel, Steffen Tegethoff, Marcel Vuc
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Patent number: 11503693Abstract: A driver unit for programming an output current of a driver with an output stage for providing the output current and a primary control stage with a control input for controlling the output current has been provided. The driver unit includes a programmable memory unit for storing data corresponding a target value of the output current, a programming signal circuit configured to provide electric signals for writing the data in the programmable memory unit as well as a controller circuit with a controller. The controller is operatively connected to the programmable memory unit and is configured to read out the data stored in the programmable memory unit and generate a controller output signal for adjusting the output current of the driver, based on the data stored in the programmable memory unit.Type: GrantFiled: May 6, 2021Date of Patent: November 15, 2022Assignee: LEDVANCE GMBHInventors: Xiangyin Hao, Daogang Wei, Xiao Ruan, Dayi Zhong
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Patent number: 11490494Abstract: A method for controlling an electronic device with a remote control includes detecting a motion of the remote control and determining a command associated with the detected motion. The determined command is sent from the remote control to the electronic device. A corresponding remote control includes a motion detector for detecting a motion of the remote control, a device for determining a command associated with the detected motion, and a transmitter for sending the determined command to the electronic device.Type: GrantFiled: September 6, 2018Date of Patent: November 1, 2022Assignee: LEDVANCE GMBHInventors: Yongchang Dai, Huajin Huang, Wang Jiang, Yafen Zhang
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Patent number: 11490238Abstract: A method for joining a Zigbee device to a Zigbee network, includes starting a Zigbee protocol stack and a Bluetooth protocol stack on the Zigbee device, sending out Zigbee requests to seek for Zigbee networks, sending out Bluetooth beacon messages containing a Zigbee install code, wherein the Zigbee requests and the Bluetooth beacon messages are sent out in a time division multiplex manner.Type: GrantFiled: January 31, 2020Date of Patent: November 1, 2022Assignee: LEDVANCE GMBHInventors: Huajin Huang, Wang Jiang, Wuqiang Liao, Li Lu
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Patent number: 11454266Abstract: A cable clamp for holding a cable, preferably for an LED driver, including a clamp cover and a clamp gear which can be joined together, thereby defining an inner space for accommodating a portion of the cable, and a bracket placed inside the inner space and configured to apply a clamping force on the cable, wherein the bracket is adjustable in a direction perpendicular to the axial direction of the cable such that the bracket can take different positions in the joined state.Type: GrantFiled: March 6, 2020Date of Patent: September 27, 2022Assignee: LEDVANCE GMBHInventors: Tianci Zeng, Daogang Wei
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Patent number: 11419195Abstract: An electronic driver for transforming an electronic ballast input voltage into an operating voltage for an LED lighting module. The driver includes a flicker eliminating circuit, which is adapted to operate in a saturation mode when the input voltage is below a threshold voltage. It operates in a switch mode when the input voltage is above a threshold voltage. A voltage drop in the flicker eliminating circuit in the saturation mode is higher than in the switch mode.Type: GrantFiled: June 28, 2021Date of Patent: August 16, 2022Assignee: LEDVANCE GMBHInventors: Zhifeng Li, Hui Ye
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Patent number: 11399423Abstract: A lighting device including an LED light source, wherein the LED light source includes a first LED strand for generating a first light with a first correlated color temperature and a second LED strand for generating a second light with a second color temperature different from the first color temperature. The lighting device further comprises control electronics with a controllable LED driver for driving the LED light source, wherein the control electronics comprise a switch for switching between the first LED strand and the second LED strand so that either the first LED strand or the second LED strand is activated depending on the switch position. A lighting system comprising the lighting device is further disclosed.Type: GrantFiled: March 19, 2021Date of Patent: July 26, 2022Assignee: LEDVANCE GMBHInventors: Patrick Kotal, Krister Bergenek, Shijun Nie
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Patent number: 11324088Abstract: A lighting system comprises one or more illuminants and a control device for adjusting light parameters of the illuminants during operation. The control device is arranged to adjust the light parameters time-dependently according to a predetermined course of the light parameters. The control device is further adapted to receive a one-dimensional user setting and to change the course of the light parameters according to the one-dimensional user setting.Type: GrantFiled: March 15, 2019Date of Patent: May 3, 2022Assignee: LEDVANCE GMBHInventors: Dieter Lang, Enzo Peres, Timo Weinert
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Patent number: 11251165Abstract: A light engine for a semiconductor lamp comprises a substrate and at least two groups of LED chips arranged on the substrate.Type: GrantFiled: November 6, 2019Date of Patent: February 15, 2022Assignee: LEDVANCE GMBHInventors: Jing Lin, Junhao Yuan, Xiongqiang He, Shuting Chou
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Patent number: 11251349Abstract: A light fixture has a translucent tubular bulb. At least one end cap is located at one end of the translucent tubular bulb. A light engine is disposed in the translucent tubular bulb. The light engine has a leadframe on which a plurality of semiconductor light elements is arranged. The fixture may include an electronic driver. The electronic driver includes a plurality of electronic components. At least one of the plurality of electronic components is arranged inside the transparent tubular bulb.Type: GrantFiled: December 26, 2018Date of Patent: February 15, 2022Assignee: LEDVANCE GMBHInventors: Bernhard Rieder, Heinz Lang, Georg Rosenbauer
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Patent number: 11240889Abstract: A lighting system has at least one light fixture and a control device. The at least one light fixture has light parameters. The control device is in communication with the at least one light fixture. The control device has a plurality of one-dimensional user setting, a predetermined sequence of light parameters as a function of time, and an adjustment to the predetermined sequence as a function of a selected one-dimensional user setting.Type: GrantFiled: March 15, 2019Date of Patent: February 1, 2022Assignee: LEDVANCE GMBHInventors: Dieter Lang, Enzo Peres, Timo Weinert
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Patent number: 11209130Abstract: A method for producing a tube lamp uses at least one leadframe. A leadframe is a flat structure which has two opposing surfaces extending substantially parallel and spaced apart by the sheet thickness. One or more stabilizing sections are applied to the leadframe. The leadframe is fastened with the stabilizing sections in a tubular housing of the tube lamp.Type: GrantFiled: October 16, 2019Date of Patent: December 28, 2021Assignee: LEDVANCE GMBHInventors: Georg Rosenbauer, Bernhard Rieder, Henrike Streppel, Andreas Hammer, Georg Scheipl, Klaus Eckert
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Patent number: 11168842Abstract: A lamp includes a base, a light-permeable bulb containing at least one light source, and a driver for powering the light source. The driver is located within the base. The bulb has outwardly leading supply lines on the base side, and the driver has at least one contact element which projects in the direction of the bulb into which a free-standing section of the respective supply line is inserted to make contact. The technology is particularly applicable to lamps with LEDs as light sources, in particular for replacement of conventional lamps such as incandescent lamps.Type: GrantFiled: February 17, 2017Date of Patent: November 9, 2021Assignee: LEDVANCE GMBHInventors: Lene Haberkorn, Klaus Eckert
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Patent number: 11162672Abstract: A lighting device with changeable beam angle and fixed center beam candle power. The device may include a light source, an electronic driver for driving the light source to emit light, a beam shaping element for shaping a beam of light emitted by the light source, a beam angle adjustment mechanism configured to change a positional relationship between the light source and the beam shaping element, and a sensor configured to provide a signal indicative of a setting of the beam angle adjustment mechanism. The electronic driver is configured to adjust the luminous flux emitted by the light source depending on the signal provided by the sensor. Such a lighting device may keep the center beam candle power of the emitted light constant when the beam angle is changed.Type: GrantFiled: March 6, 2020Date of Patent: November 2, 2021Assignee: LEDVANCE GMBHInventors: Jinhui Luo, Zhian Li, Jianxiong Deng