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    Tapped single-stage buck converter LED driver
    11.
    发明授权
    Tapped single-stage buck converter LED driver 有权

    公开(公告)号：US11246203B2

    公开(公告)日：2022-02-08

    申请号：US16286360

    申请日：2019-02-26

    Applicant: Lumileds LLC

    Inventor： Zhi Hua Song ,  Wouter Soer

    IPC: H02M3/156 ,  H02M1/44 ,  H05B45/48 ,  H05B45/375 ,  H02M7/06

    Abstract: Systems, devices and methods are described herein. An integrated light emitting diode (LED) lighting system includes an electronics board. An alternating current (AC) input is disposed on the electronics board. Multiple strings of LED devices are disposed on the electronics board, each having an individual voltage threshold. A buck converter is disposed on the electronics board and is electrically coupled to provide a direct current (DC) current based on an AC current at the AC input. A switching circuit is disposed on the electronics board and is electrically coupled to the strings of LED devices to apply the DC current to each of the strings in a sequence beginning at a time when an instantaneous voltage level at the AC input reaches the individual threshold voltage of a first one of the strings of LED devices in the sequence.

    Light emitting device with improved warm-white color point
    12.
    发明授权
    Light emitting device with improved warm-white color point 有权

    公开(公告)号：US11231148B2

    公开(公告)日：2022-01-25

    申请号：US17064487

    申请日：2020-10-06

    Applicant: LUMILEDS LLC

    Inventor： Wouter Soer ,  Hans-Helmut Bechtel

    IPC: H05B33/02 ,  F21K9/64 ,  H01L25/075 ,  H01L33/50 ,  C09K11/08 ,  F21V23/00 ,  F21V7/22 ,  C09K11/77 ,  F21K9/62

    Abstract: A light emitting device is disclosed and includes an emission source configured to emit a primary blue light and a wavelength-converting element configured to convert the primary blue light to a secondary light having a correlated color temperature (CCT) in the range of 1600K-2500K and color rendering index (CRI) in the range of 40-60, the wavelength-converting element including a red phosphor material having a peak emission wavelength that is less than 620 nm and a green phosphor material having a peak emission wavelength that is greater than 530 nm. The device may exhibit a melanopic/photopic ratio of less than 0.25 and/or may exhibit a radiometric power fraction of light having a wavelength below 530 nm below .1.

    Lighting system with integrated sensor
    14.
    发明授权
    Lighting system with integrated sensor 有权

    公开(公告)号：US11805584B2

    公开(公告)日：2023-10-31

    申请号：US17846607

    申请日：2022-06-22

    Applicant: LUMILEDS LLC

    Inventor： Wouter Soer ,  Willem Sillevis-Smitt

    IPC: H05B45/22 ,  G06T7/90 ,  H05B47/11 ,  F21V5/04 ,  F21V23/00

    CPC classification number: H05B45/22 ,  G06T7/90 ,  H05B47/11 ,  F21V5/04 ,  F21V23/003

    Abstract: Techniques and devices are provided for sensing image data from a scene and activating primary light sources based on information sensed from the scene. Subsets of a plurality of primary light sources may be activated to emit sensing spectrum of light onto a scene. Combined image data may be sensed from the scene while the subsets of the plurality of primary light sources are activated. Reflectance information for the scene may be determined based on the combined image data and combined sensing spectra. Spectrum optimization criteria for the primary light sources may be determined based on the reference information and a desired output parameter provided by a user or determined by a controller. The plurality of primary light sources may be activated to emit a lighting spectrum based on the spectrum optimization criteria.

    MULTI-COLOR PHOSPHOR CONVERTED LED PACKAGE WITH SINGLE CAVITY
    16.
    发明申请
    MULTI-COLOR PHOSPHOR CONVERTED LED PACKAGE WITH SINGLE CAVITY 有权

    公开(公告)号：US20220328462A1

    公开(公告)日：2022-10-13

    申请号：US17846616

    申请日：2022-06-22

    Applicant: Lumileds LLC

    Inventor： Wouter Soer ,  Gregory Tashjian

    IPC: H01L25/075

    Abstract: A lighting device includes a first LED configured to emit a first light, a second LED configured to emit a third light, a first phosphor disposed over the first LED and second LED, and arranged to absorb a portion of the first light and in response emit a second light of a longer wavelength than the first light, and a second phosphor disposed over the second LED, the second phosphor arranged to absorb a portion of the third light and in response emit a fourth light of a longer wavelength than the third light, and the fourth light exits the second phosphor into the first phosphor, and both the second light and fourth light exit the lighting device though the first phosphor.

    Tunable lighting system with preferred color rendering
    17.
    发明授权
    Tunable lighting system with preferred color rendering 有权

    公开(公告)号：US11289630B2

    公开(公告)日：2022-03-29

    申请号：US16723265

    申请日：2019-12-20

    Applicant: Lumileds LLC

    Inventor： Wouter Soer

    IPC: H01L33/50 ,  H05B45/20 ,  H01L25/075

    Abstract: Light emitting devices having a first LED with a first phosphor, a second LED with a second phosphor and a third LED with a third phosphor to emit a composite white light are described. The first LED and first phosphor emit the red spectral component, the second LED and the second phosphor emit the blue spectral component and the third LED and third phosphor emit the green spectral component of the composite white light. The green spectral component has at least 30% radiant flux in a deep red spectral wavelength region.

    MULTI-COLOR PHOSPHOR CONVERTED LED PACKAGE WITH SINGLE CAVITY
    18.
    发明申请
    MULTI-COLOR PHOSPHOR CONVERTED LED PACKAGE WITH SINGLE CAVITY 有权

    公开(公告)号：US20210183824A1

    公开(公告)日：2021-06-17

    申请号：US16714238

    申请日：2019-12-13

    Applicant: Lumileds LLC

    Inventor： Wouter Soer ,  Gregory TASHJIAN

    IPC: H01L25/075

    Abstract: A lighting device includes a first LED configured to emit a first light, a second LED configured to emit a third light, a first phosphor disposed over the first LED and second LED, and arranged to absorb a portion of the first light and in response emit a second light of a longer wavelength than the first light, and a second phosphor disposed over the second LED, the second phosphor arranged to absorb a portion of the third light and in response emit a fourth light of a longer wavelength than the third light, and the fourth light exits the second phosphor into the first phosphor, and both the second light and fourth light exit the lighting device though the first phosphor.

    Lighting system with integrated sensor
    20.
    发明授权
    Lighting system with integrated sensor 有权

    公开(公告)号：US10582589B2

    公开(公告)日：2020-03-03

    申请号：US16015697

    申请日：2018-06-22

    Applicant: Lumileds LLC

    Inventor： Wouter Soer ,  Willem Sillevis-Smitt

    IPC: H05B33/08 ,  H05B37/02 ,  G06T7/90 ,  F21V5/04 ,  F21V23/00

    Abstract: Techniques and devices are provided for sensing image data from a scene and activating primary light sources based on information sensed from the scene. Subsets of a plurality of primary light sources may be activated to emit sensing spectrum of light onto a scene. Combined image data may be sensed from the scene while the subsets of the plurality of primary light sources are activated. Reflectance information for the scene may be determined based on the combined image data and combined sensing spectra. Spectrum optimization criteria for the primary light sources may be determined based on the reference information and a desired output parameter provided by a user or determined by a controller. The plurality of primary light sources may be activated to emit a lighting spectrum based on the spectrum optimization criteria.

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