LIGHT SOURCE DEVICE
    22.
    发明申请
    LIGHT SOURCE DEVICE 审中-公开

    公开(公告)号:US20200010760A1

    公开(公告)日:2020-01-09

    申请号:US16483401

    申请日:2018-02-22

    摘要: A light source device includes an excitation light source, and a fluorescence layer configured to emit fluorescence by receiving excitation light emitted from the excitation tight source. The fluorescence layer includes at least one selected from a group consisting of a first fluorescent substance and a second fluorescent substance. The first fluorescent substance is configured to emit fluorescence having a peak wavelength ranging :from 400 nm to 510 nm, inclusive, by receiving the excitation light. The second fluorescent substance is configured to emit fluorescence having a peak wavelength ranging from 580 nm to 700 nm, inclusive, by receiving the excitation light. The first fluorescent substance and the second fluorescent substance each have a fluorescence lifetime ranging from 0.1 nanoseconds to 250 nanoseconds, inclusive. Energy density of the excitation light is 10 W/mm2 or more.

    Meat lighting system with improved efficiency and red oversaturation

    公开(公告)号:US10439110B2

    公开(公告)日:2019-10-08

    申请号:US15753658

    申请日:2016-08-16

    摘要: The invention provides a lighting system (100), configured to provide lighting system light (101), the lighting system comprising: —a light source (10) configured to provide light source light (11) with light intensity in the blue spectral region; —a first luminescent material (210) configured to convert at least part of the light source light (11) into first luminescent material light (211) with light intensity in the green spectral region and having a full width half maximum (FWHM) of at least 90 nm; —a second luminescent material (220) configured to convert (i) at least part of the light source light (11), or (ii) at least part of the light source light (11) and at least part of the first luminescent material light (211) into second luminescent material light (221) with light intensity in the spectral region of 610-680 nm; wherein the lighting system (100) is configured to provide at a first setting of the lighting system (100) lighting system light (101) comprising said light source light (11), said first luminescent material light (211) and said second luminescent material light (221) having a color point (x; y) with x=0.38±0.1 and with y=0.28±0.1.

    LIGHT EMITTING DEVICE
    24.
    发明申请

    公开(公告)号:US20180274737A1

    公开(公告)日:2018-09-27

    申请号:US15761944

    申请日:2016-10-26

    IPC分类号: F21K9/64 F21V9/38 F21V9/32

    摘要: A light emitting device includes a first wavelength converter that contains a first phosphor that absorbs at least part of primary light radiated by a radiation source and converts the primary light absorbed into secondary light, and a second wavelength converter that contains a second phosphor that absorbs at least part of the secondary light and converts the secondary light absorbed into tertiary light. The lifetime of fluorescence emitted from the second phosphor is longer than the lifetime of fluorescence emitted from the first phosphor, and the light density of the secondary light, with which the second wavelength converter is irradiated, is lower than the light density of the primary light, with which the first wavelength converter is irradiated.

    High-intensity light source with high CRI

    公开(公告)号:US11927342B2

    公开(公告)日:2024-03-12

    申请号:US18010515

    申请日:2021-06-14

    IPC分类号: F21V9/38 C09K11/77 F21Y115/30

    摘要: The invention provides a light generating device (1000), wherein: (I) the light generating device (1000) comprises: (a) 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 first laser light source (10) configured to generate first laser light source light (11); (b) 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 spectral power distribution having an emission at one or more wavelengths selected from the wavelength range of 590-780 nm, wherein the first luminescent material (210) is configured in an optical resonator (230); (II) the first light source (110) and the first luminescent material (210) are configured to generate first luminescent material laser light (1211) having a first luminescent material laser light spectral power distribution comprising at least part of the first luminescent material light (211); (III) the first light source light spectral power distribution and the first luminescent material laser light spectral power distribution mutually differ; and (IV) the light generating device (1000) is configured to generate in one or more operational modes white device light (1001) comprising the first luminescent material laser light (1211).

    High intensity light source with high CRI

    公开(公告)号:US11841136B2

    公开(公告)日:2023-12-12

    申请号:US17636091

    申请日:2020-08-18

    摘要: The invention provides a light generating device (1000) configured to generate device light (1001), wherein the light generating device (1000) comprises a first light source (110), a first luminescent material (210), a second source (120) of second light (121), and a third light source (130), wherein: the first light source (110) is configured to generate blue first light source light (111) having a first peak wavelength λ1 selected from the spectral wavelength range of 440-475 nm, wherein the first light source (110) is a first laser light source (10); the first luminescent material (210) is configured to convert at least part of the first light source light (111) into first luminescent material light (211) having an emission band having wavelengths in one or more of (a) the green spectral wavelength range and (b) the yellow spectral wavelength range, wherein the
    first luminescent material (210) comprises a luminescent material of the type A3B5O12:Ce, wherein A comprises one or more of Y, Gd, Tb and Lu, and wherein B comprises one or more of Al, Ga, and In, wherein A comprises at least Y, and wherein B comprises at least Al; the second source (120) of second light (121) is configured to provide the second light (121) having an emission band having a dominant wavelength or peak wavelength in the spectral wavelength range of 580-610 nm; the third light source (130) is configured to generate red third light source light (131) having a third peak wavelength λ3 selected from the spectral wavelength range of 630-670 nm, wherein the third light source (130) is a third laser light source (30); the light generating device (1000) is configured to provide in a first operational mode white device light (1001) comprising the first light source light (111), the first luminescent material light (211), the second light (121), and the third light source light (131), with a correlated color temperature selected from the range of 2000-5000 K and a color rendering index (CRI) of at least 80.