知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

8 records (took 0.009 seconds)

    Driver circuit with reduced current ripple
    2.
    发明授权
    Driver circuit with reduced current ripple 有权

    公开(公告)号：US11647573B2

    公开(公告)日：2023-05-09

    申请号：US17572847

    申请日：2022-01-11

    Applicant: LEDVANCE GmbH

    Inventor： Shijun Nie ,  Shaoping Chen

    IPC: H05B45/345 ,  H05B45/385

    CPC classification number: H05B45/345 ,  H05B45/385

    Abstract: 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.

    Driver Circuit with Reduced Current Ripple
    4.
    发明申请
    Driver Circuit with Reduced Current Ripple 有权

    公开(公告)号：US20220232681A1

    公开(公告)日：2022-07-21

    申请号：US17572847

    申请日：2022-01-11

    Applicant: LEDVANCE GmbH

    Inventor： Shijun Nie ,  Shaoping Chen

    IPC: H05B45/345 ,  H05B45/385

    Abstract: 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.

    DYNAMIC LIGHT CONTROL METHOD FOR CONTROLLING AT LEAST ONE ILLUMINATION PARAMETER
    5.
    发明申请
    DYNAMIC LIGHT CONTROL METHOD FOR CONTROLLING AT LEAST ONE ILLUMINATION PARAMETER 有权

    公开(公告)号：US20210267037A1

    公开(公告)日：2021-08-26

    申请号：US17179993

    申请日：2021-02-19

    Applicant: LEDVANCE GmbH

    Inventor： Shaoping Chen ,  Dandan Hou ,  Huaming Chen ,  Yandan Lin

    IPC: H05B47/16 ,  A61M21/00

    Abstract: 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.

    Dynamic light control method for controlling at least one illumination parameter
    6.
    发明授权
    Dynamic light control method for controlling at least one illumination parameter 有权

    公开(公告)号：US11612040B2

    公开(公告)日：2023-03-21

    申请号：US17179993

    申请日：2021-02-19

    Applicant: LEDVANCE GmbH

    Inventor： Shaoping Chen ,  Dandan Hou ,  Huaming Chen ,  Yandan Lin

    IPC: H05B47/16 ,  A61M21/00

    Abstract: 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.

    Lighting system with wireless power supply
    8.
    发明申请
    Lighting system with wireless power supply 审中-公开

    公开(公告)号：US20180231194A1

    公开(公告)日：2018-08-16

    申请号：US15884715

    申请日：2018-01-31

    Applicant: LEDVANCE GmbH

    Inventor： Shaoping Chen ,  Shijun Nie ,  Fan Xin

    IPC: F21L4/08 ,  H02J7/02 ,  H02J7/00 ,  F21S6/00 ,  H02J50/40 ,  H02J50/10

    Abstract: A lighting system comprises a primary luminaire and a secondary luminaire each having a light source. Electrical power can be transmitted wirelessly via an inductive wireless power transmission from the primary to the secondary luminaire. Electrical power can also be transmitted wirelessly via an RF wireless power transmission from a RF wireless power transmitter to both luminaires. Energy can be stored in energy storage means. Thus, true wireless lighting can be achieved.

Patent Agency Ranking