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    High quality white laser-based light source by indirect pumping of red phosphor
    2.
    发明授权
    High quality white laser-based light source by indirect pumping of red phosphor 有权

    公开(公告)号：US11953194B2

    公开(公告)日：2024-04-09

    申请号：US17636275

    申请日：2020-08-17

    Applicant: SIGNIFY HOLDING B.V.

    Inventor： Olexandr Valentynovych Vdovin ,  Ties Van Bommel ,  Rifat Ata Mustafa Hikmet ,  Martinus Petrus Joseph Peeters ,  Robert Van Asselt

    IPC: F21V9/38 ,  C09K11/77 ,  F21V29/503 ,  F21Y113/10 ,  F21Y115/30

    CPC classification number: F21V9/38 ,  C09K11/77 ,  F21V29/503 ,  F21Y2113/10 ,  F21Y2115/30

    Abstract: The invention provides a lighting device (1000) comprising: —a first light source (110) configured to generate first light source light (111), having a first light source light spectral power distribution, wherein the first light source (110) comprises a laser light source (10), and wherein the first light source light (111) has an optical axis (0); —a first converter material (215), comprising a first luminescent material (210), configured to convert at least part of the first light source light (111) into first luminescent material light (211) having a first luminescent material light spectral power distribution, wherein the first luminescent material light (211) has one or more wavelengths in the green and/or yellow wavelength range; —a second converter material (225), comprising a second luminescent material (220), configured to convert part of the first luminescent material light (211) into second luminescent material light (221) having a second luminescent material light spectral power distribution different from the first luminescent material light spectral power distribution, wherein the second luminescent material light (221) has one or more wavelengths in the orange and/or red wavelength range; wherein the first light source (110), the first converter material (215), and the second converter material (225) are configured such that first light source light (111) can only reach the second converter material (225) after scattering via the first converter material (215); wherein the optical axis (O) is incident on the first converter material (215) and is not incident on the second converter material (225); and —a first thermally conductive element (410) in thermal contact with at least part of the second luminescent material (220).

    Wavelength converting composite member, and light emitting device and electronic instrument employing same
    8.
    发明授权
    Wavelength converting composite member, and light emitting device and electronic instrument employing same 有权

    公开(公告)号：US11692687B2

    公开(公告)日：2023-07-04

    申请号：US17919999

    申请日：2021-04-19

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Mitsuru Nitta ,  Shozo Oshio ,  Chigusa Fujiwara

    IPC: F21V9/38 ,  A61B90/30

    CPC classification number: F21V9/38 ,  A61B2090/304

    Abstract: Provided is a wavelength converting composite member including: a disk-shaped substrate; a first wavelength converting member provided on the substrate and containing a first phosphor that radiates fluorescence due to a parity-forbidden transition; and a second wavelength converting member provided on the substrate and containing a second phosphor that radiates fluorescence due to a parity-allowed transition. The first wavelength converting member and the second wavelength converting member are disposed adjacent to each other along the circumferential direction of the substrate. The first wavelength converting member and the second wavelength converting member are provided on the substrate in such a way that the position of the center of gravity of the entirety of the first wavelength converting member and the second wavelength converting member is located on the rotation axis of the substrate. A light emitting device is provided with the wavelength converting composite member.

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