LED ARRAY BETWEEN FLEXIBLE AND RIGID SUBSTRATES

    公开(公告)号:US20230411572A1

    公开(公告)日:2023-12-21

    申请号:US18206309

    申请日:2023-06-06

    Applicant: Lumileds LLC

    Abstract: A light source can include a transparent flexible substrate. A sparse array of light-emitting diodes (LEDs) can be disposed on the transparent flexible substrate. A rigid substrate can be adhered to the transparent flexible substrate such that the sparse array of LEDs is located between the rigid substrate and the transparent flexible substrate. The rigid substrate can be adhered to the transparent flexible substrate with an adhesive layer. The sparse array of LEDs can be encapsulated in an adhesive of the adhesive layer. The adhesive can have a refractive index that is between a refractive index of the transparent flexible substrate and a refractive index of the rigid substrate, inclusive. The sparse array of LEDs can have a light-emitting area that is less than or equal to a specified fraction of a surface area of the sparse array, such as 5 percent or 1 percent.

    Tunable lighting system with preferred color rendering

    公开(公告)号:US11949049B2

    公开(公告)日:2024-04-02

    申请号:US17686479

    申请日:2022-03-04

    Applicant: Lumileds LLC

    Inventor: Wouter Soer

    CPC classification number: H01L33/504 H01L25/0753 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.

    INTEGRATED OPTICAL SYSTEM FOR DYNAMIC DIFFUSE AND DIRECTIONAL LIGHTING

    公开(公告)号:US20230258317A1

    公开(公告)日:2023-08-17

    申请号:US18140382

    申请日:2023-04-27

    Applicant: Lumileds LLC

    CPC classification number: F21V14/06 F21V23/003 F21K9/61 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.

    LIGHTING SYSTEM WITH INTEGRATED SENSOR
    6.
    发明申请

    公开(公告)号:US20190394853A1

    公开(公告)日:2019-12-26

    申请号:US16015697

    申请日:2018-06-22

    Applicant: Lumileds LLC

    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

    公开(公告)号:US12033990B2

    公开(公告)日:2024-07-09

    申请号:US17846616

    申请日:2022-06-22

    Applicant: Lumileds LLC

    CPC classification number: H01L25/0753

    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

    公开(公告)号:US11382195B2

    公开(公告)日:2022-07-05

    申请号:US17144881

    申请日:2021-01-08

    Applicant: LUMILEDS LLC

    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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