Illumination apparatus
    1.
    发明授权

    公开(公告)号:US12085240B2

    公开(公告)日:2024-09-10

    申请号:US18013153

    申请日:2021-06-24

    Abstract: It is provided an illumination apparatus, comprising a first light source mounted on a board emitting first light having a first wavelength spectrum; a second light source mounted on the board emitting second light having a second wavelength spectrum; a phosphor layer converting at least a part of at least one of the first light and the second light into first converted light and second converted light, respectively; wherein the phosphor layer emits a remaining part of the first light, a remaining part of the second light, the first converted light, and the second converted light; the phosphor layer is in contact with the first and second light sources and continuous on the first and second light sources, and on a path on the board connecting the first and second light sources; the phosphor layer and the board surround the first light source and the second light source.

    High-intensity light source with high CRI

    公开(公告)号:US12085239B2

    公开(公告)日:2024-09-10

    申请号:US17760833

    申请日:2020-09-14

    CPC classification number: F21K9/64 H01L33/502 H01S5/0087 F21Y2113/10

    Abstract: The invention provides a light generating device (1000) configured to generate device light (1001), wherein the light generating device (1000) comprises (i) a first light source (110) configured to generate blue first light source light (111), wherein the first light source (110) is a first laser light source (10), (ii) a first luminescent material (210) configured to convert part of the blue first light source light (111) into first luminescent material light (211) having an emission band having wavelengths in one or more of the green and yellow, (iii) an optical filter (410) configured to optically filter the first luminescent material light (211) into optically filtered first luminescent material light (213), whereby the optically filtered first luminescent material light (213) is red-shifted relative to the first luminescent material light (211), and (iv) a second light source (120) configured to generate red second light source light (121), wherein the second light source (120) comprises a second laser light source (20); wherein in one or more operational modes of the light generating device (1000) the light generating device (1000) is configured to generate white device light (1001) comprising the first light source light (111), the optically filtered first luminescent material light (213), and the second light source light (121).

    WAVELENGTH CONVERTER, WAVELENGTH CONVERSION DEVICE, LIGHT SOURCE DEVICE, PROJECTOR, AND METHOD OF MANUFACTURING WAVELENGTH CONVERTER

    公开(公告)号:US20240201572A1

    公开(公告)日:2024-06-20

    申请号:US18539740

    申请日:2023-12-14

    Inventor: Yoichi NAKAGOMI

    CPC classification number: G03B21/204 F21K9/64 G03B21/206 G03B21/2066

    Abstract: A wavelength converter includes: a wavelength conversion part having a first surface where first light enters and a second surface positioned at opposite side from first surface, and configured to convert the first light into second light; and a substrate configured to allow heat of wavelength conversion part to be transferred. The wavelength conversion part contains wavelength conversion particles excited by the first light to emit the second light, a filler having a heat conductivity higher than the wavelength conversion particles, and a binder holding the wavelength conversion particles and the filler. The wavelength conversion part includes a first wavelength conversion layer having the first surface and a second wavelength conversion layer having the second surface. The first wavelength conversion layer contains wavelength conversion particles and a binder, but does not contain a filler, and the second wavelength conversion layer contains the wavelength conversion particles, the filler, and the binder.

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