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    LIGHT-EMITTING DEVICE, LAMP, AND LIGHTING FIXTURE
    7.
    发明公开
    LIGHT-EMITTING DEVICE, LAMP, AND LIGHTING FIXTURE 审中-实审

    公开(公告)号：EP4349936A1

    公开(公告)日：2024-04-10

    申请号：EP22832426.5

    申请日：2022-02-22

    申请人： Nichia Corporation

    发明人： MATSUMOTO Mika ,  KURATA Miyuki ,  FUJIO Kazushige

    IPC分类号： C09K11/61 ,  C09K11/64 ,  C09K11/78 ,  F21Y115/10 ,  H01L33/50 ,  F21V9/20 ,  F21V9/30 ,  F21W111/02

    摘要： Provided are a light-emitting device, a lighting appliance, and a lighting fixture that emit light that tends to promote melatonin secretion. The light-emitting device, the lighting appliance, and the lighting fixture include a light-emitting element having an emission peak wavelength in a range of 400 nm to 490 nm and a first phosphor having an emission peak wavelength in a range of 570 nm to 680 nm. The emitted light has a correlated color temperature that is 1950 K or less, an average color rendering index Ra that is 40 or greater, a full width at half maximum of an emission spectrum indicating a maximum emission intensity in an emission spectrum of the light-emitting device that is 110 nm or less, and a melanopic ratio MR derived from Equation (1) that is 0.233 or less.

    APPARATUS COMPRISING A SCINTILLATOR
    8.
    发明公开
    APPARATUS COMPRISING A SCINTILLATOR 审中-公开

    公开(公告)号：EP4234659A3

    公开(公告)日：2024-02-14

    申请号：EP23169788.9

    申请日：2012-05-15

    申请人： SAINT-GOBAIN CRISTAUX & DETECTEURS

    发明人： BLAHUTA, Samuel ,  OUSPENSKI, Vladimir

    IPC分类号： C09K11/85 ,  C09K11/61 ,  C09K11/64 ,  G01T1/00

    摘要： A scintillation compound, other than a rare earth silicate, can include a rare earth element that is in a divalent (RE 2+ ), trivalent (RE 3+ ) or a tetravalent state (RE 4+ ). The scintillation compound can include another element to allow for better change balance. The other element may be a principal constituent of the scintillation compound or may be a dopant or a co-dopant. In an embodiment, a metal element in a trivalent state (M 3+ ) may be replaced by RE 4+ and a metal element in a divalent state (M 2+ ). In another embodiment, M 3+ may be replaced by RE 2+ and M 4+ . In a further embodiment, M 2+ may be replaced by a RE 3+ and a metal element in a monovalent state (M 1+ ). The metal element used for electronic charge balance may have a single valance state, rather than a plurality of valence states, to help reduce the likelihood that the valance state would change during formation of the scintillation compound.