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    Integrated optical system for dynamic diffuse and directional lighting
    21.
    发明授权
    Integrated optical system for dynamic diffuse and directional lighting 有权

    公开(公告)号：US11946621B2

    公开(公告)日：2024-04-02

    申请号：US18140382

    申请日：2023-04-27

    Applicant: Lumileds LLC

    Inventor： Wouter Soer ,  Johannes Willem Herman Sillevis Smitt

    IPC: F21V14/06 ,  F21K9/61 ,  F21V23/00 ,  F21Y115/10

    CPC classification number: F21V14/06 ,  F21K9/61 ,  F21V23/003 ,  F21Y2115/10

    Abstract: An illumination system can produce a dynamically variable illumination pattern. The illumination system can include a light guide. The illumination system can include projection optics, which can contribute to the illumination pattern at relatively low beam angles (i.e., beam angles formed with respect to a surface normal of the light guide). The projection optics can include individually addressable light-producing elements that can direct light through one or more focusing elements. A controller can control which of the light-producing elements are electrically powered and can therefore control the illumination pattern contribution from the projection optics. The illumination system can also include scattering optics, which can contribute to the illumination pattern at relatively high beam angles. The scattering optics can direct light out of the light guide over a relatively large surface area, which can help reduce glare when the light guide is viewed directly.

    Integrated optical system for dynamic diffuse and directional lighting
    23.
    发明授权
    Integrated optical system for dynamic diffuse and directional lighting 有权

    公开(公告)号：US11668452B2

    公开(公告)日：2023-06-06

    申请号：US17582649

    申请日：2022-01-24

    Applicant: Lumileds LLC

    Inventor： Wouter Soer ,  Johannes Willem Herman Sillevis Smitt

    IPC: F21V14/06 ,  F21V23/00 ,  F21K9/61 ,  F21Y115/10

    CPC classification number: F21V14/06 ,  F21K9/61 ,  F21V23/003 ,  F21Y2115/10

    Abstract: An illumination system can produce a dynamically variable illumination pattern. The illumination system can include a light guide. The illumination system can include projection optics, which can contribute to the illumination pattern at relatively low beam angles (i.e., beam angles formed with respect to a surface normal of the light guide). The projection optics can include individually addressable light-producing elements that can direct light through one or more focusing elements. A controller can control which of the light-producing elements are electrically powered and can therefore control the illumination pattern contribution from the projection optics. The illumination system can also include scattering optics, which can contribute to the illumination pattern at relatively high beam angles. The scattering optics can direct light out of the light guide over a relatively large surface area, which can help reduce glare when the light guide is viewed directly.

    INTEGRATED OPTICAL SYSTEM FOR DYNAMIC DIFFUSE AND DIRECTIONAL LIGHTING
    25.
    发明申请
    INTEGRATED OPTICAL SYSTEM FOR DYNAMIC DIFFUSE AND DIRECTIONAL LIGHTING 有权

    公开(公告)号：US20220221132A1

    公开(公告)日：2022-07-14

    申请号：US17582649

    申请日：2022-01-24

    Applicant: Lumileds LLC

    Inventor： Wouter Soer ,  Johannes Willem Herman Sillevis Smitt

    IPC: F21V14/06 ,  F21V23/00 ,  F21K9/61

    Abstract: An illumination system can produce a dynamically variable illumination pattern. The illumination system can include a light guide. The illumination system can include projection optics, which can contribute to the illumination pattern at relatively low beam angles (i.e., beam angles formed with respect to a surface normal of the light guide). The projection optics can include individually addressable light-producing elements that can direct light through one or more focusing elements. A controller can control which of the light-producing elements are electrically powered and can therefore control the illumination pattern contribution from the projection optics. The illumination system can also include scattering optics, which can contribute to the illumination pattern at relatively high beam angles. The scattering optics can direct light out of the light guide over a relatively large surface area, which can help reduce glare when the light guide is viewed directly.

    Tapped single-stage buck converter LED driver
    26.
    发明授权
    Tapped single-stage buck converter LED driver 有权

    公开(公告)号：US11233449B2

    公开(公告)日：2022-01-25

    申请号：US15906797

    申请日：2018-02-27

    Applicant: Lumileds LLC

    Inventor： Zhi Hua Song ,  Wouter Soer

    IPC: H02M7/06 ,  H02M3/156 ,  H02M1/08 ,  H02M1/24 ,  H05B45/48 ,  H02M1/12 ,  H05B45/375 ,  H03K5/24 ,  H02M1/44 ,  H05B45/355 ,  H05B45/36 ,  H02M1/00 ,  H02M1/42

    Abstract: An apparatus is disclosed, comprising: a first light source having a first threshold voltage; a second light source having a second threshold voltage; a rectifier configured to receive an AC voltage as input and generate a DC voltage based on the AC voltage; a single-stage Buck converter section coupled to the rectifier, the first light source, and the second light source, the Buck converter section being configured to output a current generated based on the DC voltage towards the first light source and the second light source; and a switching circuit configured to reduce a load on the Buck converter section by periodically diverting the current away from the second light source when a magnitude of the AC voltage is less than or equal to a sum of the first threshold voltage and the second threshold voltage.

    Tunable Lighting System With Preferred Color Rendering
    29.
    发明申请
    Tunable Lighting System With Preferred Color Rendering 有权

    公开(公告)号：US20210193882A1

    公开(公告)日：2021-06-24

    申请号：US16723265

    申请日：2019-12-20

    Applicant: Lumileds LLC

    Inventor： Wouter Soer

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

    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.

    Dimming LED circuit augmenting DC/DC controller integrated circuit
    30.
    发明授权
    Dimming LED circuit augmenting DC/DC controller integrated circuit 有权

    公开(公告)号：US10959306B2

    公开(公告)日：2021-03-23

    申请号：US15606388

    申请日：2017-05-26

    Applicant: Lumileds LLC

    Inventor： Zhihua Song ,  Wouter Soer ,  Ron Bonne ,  Yifeng Qiu

    IPC: H05B45/37 ,  H05B45/10 ,  H05B45/20 ,  H05B47/10 ,  H03G1/00 ,  H05B39/04

    Abstract: Embodiments include systems, methods, and apparatuses for providing a dimming function in a single stage AC input light emitting diode (LED) driver with a controller that contains an on-chip error amplifier and an on-chip fixed reference voltage source coupled to a first input of the error amplifier. The controller controls a duty cycle of a switching transistor to cause a feedback voltage, applied to a first package input terminal, to match the reference voltage. To achieve a dimming function, a voltage across a current sense resistor in series with the LEDs is applied to a first input of a high gain differential amplifier, and a variable dimming control voltage is applied to a second input of the differential amplifier. The output of the differential amplifier is coupled to the first package input terminal. The differential amplifier input signals will be matched at the target LED current level.

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