公开(公告)号：US11605761B2

公开(公告)日：2023-03-14

申请号：US17028496

申请日：2020-09-22

申请人： NICHIA CORPORATION

发明人： Kazushige Fujio ,  Masaki Kondo

IPC分类号： H01L33/48 ,  H01L33/50 ,  C09K11/77 ,  H01L33/32 ,  H01L33/56 ,  H01L33/62

摘要： A light-emitting device is provided. The light-emitting device includes a light-emitting element having a peak light-emitting wavelength in the range of 440 nm to 470 nm, and a fluorescent member. The fluorescent member includes a first fluorescent material having a peak light-emitting wavelength in the range of 480 nm to less than 520 nm, a second fluorescent material having a peak light-emitting wavelength in the range of 520 nm to less than 600 nm, and a third fluorescent material having a peak light-emitting wavelength in the range of 600 nm to 670 nm. The light-emitting device has a ratio of an effective radiant intensity for melatonin secretion suppression to an effective radiant intensity for blue-light retinal damage of 1.53 to 1.70 when the light-emitting device emits light with a correlated color temperature of 2700 K to less than 3500 K; 1.40 to 1.70 when the light-emitting device emits light with a correlated color temperature of 3500 K to less than 4500 K; 1.40 to 1.70 when the light-emitting device emits light with a correlated color temperature of 4500 K to less than 5700 K; and 1.35 to 1.65 when the light-emitting device emits light with a correlated color temperature of 5700 K to 7200 K.

公开(公告)号：US20230072659A1

公开(公告)日：2023-03-09

申请号：US17903474

申请日：2022-09-06

申请人： SHINKO ELECTRIC INDUSTRIES CO., LTD.

发明人： Michio Horiuchi ,  Yuichiro Shimizu

IPC分类号： C09K11/77 ,  C04B35/10 ,  C04B35/64 ,  C09K11/02

摘要： A ceramic composition is provided. The ceramic composition includes a corundum phase, and a CeAl11O18 phase. A ratio of an amount of substance of the CeAl11O18 phase with respect to a total amount of substance of the ceramic composition is not lower than 0.5 mol % and not higher than 5 mol %.

公开(公告)号：US11597879B2

公开(公告)日：2023-03-07

申请号：US17449340

申请日：2021-09-29

申请人： NICHIA CORPORATION

发明人： Shigeki Yoshida ,  Hiroyuki Watanabe ,  Eri Matsuka

IPC分类号： C09K11/77 ,  H01L33/50 ,  C09K11/02

摘要： The wavelength converter includes a support, and a wavelength conversion layer disposed on the support. The wavelength conversion layer contains a fluorescent layer containing a fluorescent material with a composition represented by formula (1) below, and having a thickness of from 5 μm to 155 μm. A ratio of a sum of cross-sectional areas of particles of the fluorescent material in a cross-section of the wavelength conversion layer orthogonal to a disposed surface of the wavelength conversion layer that is disposed on the support and including a full width of the wavelength conversion layer to a cross-sectional area of the cross-section of the wavelength conversion layer is from 5% to 40%. In the formula (1), M1 is at least one selected from the rare earth elements other than La and Ce; a total amount of yttrium (Y), gadolinium (Gd), and lutetium (Lu) by mole with respect to a total amount of M1 by mole is 90% or more; and p, q, r, and s satisfy 2.7≤p+q+r≤3.3, 0≤r≤1.2, 10≤s≤12, and 0

公开(公告)号：US20230053528A1

公开(公告)日：2023-02-23

申请号：US17796602

申请日：2021-01-28

申请人： DENKA COMPANY LIMITED

发明人： Yuki KUBOTA ,  Taiyo YAMAURA ,  Kazuhiro ITO

IPC分类号： C09K11/02 ,  H01L33/50 ,  C09K11/77 ,  C04B35/117 ,  C04B35/443

摘要： A phosphor plate includes a plate-like composite including a base material and an α-type sialon phosphor present in the base material, in which, in an X-ray diffraction analysis pattern using a Cu-Kα ray, in a case in which peak intensity corresponding to the α-type sialon phosphor having a diffraction angle 2 θ in a range of 30.2° or more and 30.4° or less is defined as Iα and peak intensity of a peak having a diffraction angle 2 θ in a range of 26.6° or more and 26.8° or less is defined as Iβ, Iα, and Iβ satisfy 0

公开(公告)号：US11588076B2

公开(公告)日：2023-02-21

申请号：US16606226

申请日：2018-04-17

申请人： OSRAM Opto Semiconductors GmbH

发明人： Ion Stoll ,  Alexander Baumgartner ,  Alexander Wilm

IPC分类号： C09K11/77 ,  C09K11/66 ,  C09K11/08 ,  H01L33/50 ,  C12M1/00 ,  H01L33/28 ,  H01L33/32 ,  H01S5/323

摘要： A radiation-emitting optoelectronic component may include a semiconductor chip or a semiconductor laser which, in operation of the component, emits a primary radiation in the UV region or in the blue region of the electromagnetic spectrum. The optoelectronic component may further include a conversion element comprising a first phosphor configured to convert the primary radiation at least partly to a first secondary radiation having a peak wavelength in the green region of the electromagnetic spectrum between 475 nm and 500 nm inclusive. The first phosphor may be or include BaSi4Al3N9, SrSiAl2O3N2, BaSi2N2O2, ALi3XO4, M*(1−x*−y*−z*) Z*z*[A*a*B*b*C*c*D*d*E*e*N4-n*On*], and combinations thereof.

公开(公告)号：US20230045233A1

公开(公告)日：2023-02-09

申请号：US17937766

申请日：2022-10-03

申请人： NICHIA CORPORATION

发明人： Kenichi AOYAGI ,  Takashi KAIDE ,  Yuya TAKAHASHI ,  Shoji HOSOKAWA

IPC分类号： C01B21/082 ,  C01F17/30 ,  C09K11/08 ,  C09K11/77

摘要： Provided a method of producing a β-sialon fluorescent material having excellent emission intensity. The method includes providing a first composition containing aluminum, an oxygen atom, and a europium-containing silicon nitride, heat treating the first composition, contacting the heat-treated composition and a basic substance to obtain a second composition, and contacting the second composition resulting from contacting the heat-treated composition with the basic substance and an acidic liquid medium containing an acidic substance.

公开(公告)号：US20230041361A1

公开(公告)日：2023-02-09

申请号：US17869709

申请日：2022-07-20

申请人： NICHIA CORPORATION

发明人： Teppei KUNIMUNE ,  Yasuaki KAWATA

IPC分类号： G02B5/28 ,  G02B1/14 ,  C09K11/77

摘要： A wavelength conversion module includes a base, a wavelength conversion member consisting of a phosphor, and a bonding member including a metal part that bonds the base and the wavelength conversion member. A thickness of the wavelength conversion member is less than 100 μm.

公开(公告)号：US11568161B2

公开(公告)日：2023-01-31

申请号：US16884474

申请日：2020-05-27

申请人： South Dakota Board of Regents

发明人： David Langerman ,  Jon Kellar ,  William Cross ,  P. Stanley May ,  Julian Brackins ,  Jeevan Meruga ,  Aravind Baride ,  John Rapp

IPC分类号： G06K7/10 ,  C09D11/50 ,  C09D11/037 ,  G01N21/00 ,  G07D7/00 ,  G07D7/005 ,  G07D7/0043 ,  G07D7/1205 ,  B42D25/29 ,  B42D25/382 ,  C09D11/03 ,  C09K11/77 ,  G06K7/14 ,  G01N21/64 ,  H01L23/00

摘要： An improved system and method for reading an upconversion response from nanoparticle inks is provided. A is adapted to direct a near-infrared excitation wavelength at a readable indicia, resulting in a near-infrared emission wavelength created by the upconverting nanoparticle inks. A short pass filter may filter the near-infrared excitation wavelength. A camera is in operable communication with the short pass filter and receives the near-infrared emission wavelength of the readable indicia. The system may further include an integrated circuit adapted to receive the near-infrared emission wavelength from the camera and generate a corresponding signal. A readable application may be in operable communication with the integrated circuit. The readable application receives the corresponding signal, manipulates the signal, decodes the signal into an output, and displays and/or stores the output.

公开(公告)号：US20230002671A1

公开(公告)日：2023-01-05

申请号：US17781528

申请日：2020-12-04

申请人： LUMILEDS LLC

发明人： Peter Josef SCHMIDT ,  Philipp-Jean STROBEL ,  Volker WEILER ,  Andreas TÜCKS

IPC分类号： C09K11/08 ,  C01B21/082 ,  H01L33/50 ,  C09K11/77

摘要： This specification discloses methods of enhancing the stability and performance of Eu2+ doped narrow band red emitting phosphors. In one embodiment the resulting phosphor compositions are characterized by crystallizing in ordered structure variants of the UCr4C4 crystal structure type and having a composition of AE1−xLi3−2yAl1+y−zSizO4−4y−zN4y+z:Eux (AE=Ca, Sr, Ba, or a combination thereof, 0

公开(公告)号：US20220403238A1

公开(公告)日：2022-12-22

申请号：US17754777

申请日：2020-10-05

申请人： Evonik Operations GmbH

发明人： Stefan FISCHER ,  David Böhnisch ,  Thomas Jüstel ,  Simone Schulte ,  Markus Hallack

IPC分类号： C09K11/77 ,  A61L2/10 ,  A61L2/08

摘要： A garnet is doped with a lanthanide ion selected from praseodymium, gadolinium, erbium, and neodymium. For co-doping, at least two of the lanthanide ions are selected. The lanthanide ion doped garnet converts electromagnetic radiation energy of a longer wavelength of below 530 nm to electromagnetic radiation energy of shorter wavelengths in the range of 220 to 425 nm. The garnet is crystalline and is obtainable from a mixture of salts or oxides of the components, in the presence of a chelating agent, that are dissolved in acid. This is followed by a specific calcination process to produce the garnet and, optionally, to adjust particle size and increase the crystallinity of the particles. The garnet can be used to inactivate microorganisms or cells covering a surface containing silicate-based material under exposure of electromagnetic radiation energy of a longer wavelength of below 500 nm.