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公开(公告)号：US20180073689A1
公开(公告)日：2018-03-15
申请号：US15702152
申请日：2017-09-12
申请人： Lumileds LLC
CPC分类号： F21K9/64 , A61M21/00 , A61M2021/0044 , C09K11/7734 , F21V23/003 , F21Y2115/10 , H01L27/156 , H01L33/502 , H01L33/505
摘要： A disclosed light-emitting device may provide white light with a cyan gap coinciding with a melanopic sensitivity range and thus having reduced melanopic content. The disclosed light-emitting device may include a light source providing violet or blue light with a peak wavelength under 450 nanometers (nm). The disclosed light-emitting device may include at least one down-converter coupled to and located downstream of the light source and configured with a long-wavelength onset to convert the spectrum of the violet or blue light to generate white light with a spectral power content in a 447-531 nm wavelength range that is less than or equal to 10% of a total spectral power content in a 380-780 nm wavelength range. The disclosed light-emitting device may be incorporated in a light engine system that further includes a control system that controls a drive current to the light-emitting device.
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公开(公告)号：US20210018152A1
公开(公告)日：2021-01-21
申请号：US17064487
申请日：2020-10-06
申请人： LUMILEDS LLC
发明人： Wouter SOER , Hans-Helmut BECHTEL
摘要： A light emitting device is disclosed and includes an emission source configured to emit a primary blue light and a wavelength-converting element configured to convert the primary blue light to a secondary light having a correlated color temperature (CCT) in the range of 1600K-2500K and color rendering index (CRI) in the range of 40-60, the wavelength-converting element including a red phosphor material having a peak emission wavelength that is less than 620 nm and a green phosphor material having a peak emission wavelength that is greater than 530 nm. The device may exhibit a melanopic/photopic ratio of less than 0.25 and/or may exhibit a radiometric power fraction of light having a wavelength below 530 nm below.
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公开(公告)号：US20190219234A1
公开(公告)日：2019-07-18
申请号：US16332319
申请日：2017-09-12
申请人： LUMILEDS LLC
CPC分类号： F21K9/64 , A61M21/00 , A61M2021/0044 , C09K11/7734 , F21V23/003 , F21Y2115/10 , H01L27/156 , H01L33/502 , H01L33/505 , Y02B20/181
摘要： A disclosed light-emitting device may provide white light with a cyan gap coinciding with a melanopic sensitivity range and thus having reduced melanopic content. The disclosed light-emitting device may include a light source providing violet or blue light with a peak wavelength under 450 nanometers (nm). The disclosed light-emitting device may include at least one down-converter coupled to and located downstream of the light source and configured with a long-wavelength onset to convert the spectrum of the violet or blue light to generate white light with a spectral power content in a 447-531 nm wavelength range that is less than or equal to 10% of a total spectral power content in a 380-780 nm wavelength range. The disclosed light-emitting device may be incorporated in a light engine system that further includes a control system that controls a drive current to the light-emitting device.
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公开(公告)号：US20190093832A1
公开(公告)日：2019-03-28
申请号：US16140012
申请日：2018-09-24
申请人： Lumileds LLC
发明人： Walter SOER , Hans-Helmut BECHTEL
摘要： A light emitting device is disclosed and includes an emission source configured to emit a primary blue light and a wavelength-converting element configured to convert the primary blue light to a secondary light having a correlated color temperature (CCT) in the range of 1600K-2500K and color rendering index (CRI) in the range of 40-60, the wavelength-converting element including a red phosphor material having a peak emission wavelength that is less than 620 nm and a green phosphor material having a peak emission wavelength that is greater than 530 nm. The device may exhibit a melanopic/photopic ratio of less than 0.25 and/or may exhibit a radiometric power fraction of light having a wavelength below 530 nm below 0.1.
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公开(公告)号：US20240327706A1
公开(公告)日：2024-10-03
申请号：US18737215
申请日：2024-06-07
申请人： LUMILEDS LLC
发明人： Tobias GIFTTHALER , Philipp-Jean STROBEL , Peter Josef SCHMIDT , Hans-Helmut BECHTEL , Wolfgang SCHNICK
CPC分类号： C09K11/77928 , C09K11/55 , C09K11/63 , C09K11/7715 , C09K11/77347
摘要： A family of optionally substituted oxonitridoberyllosilicate photoluminescent compositions (i.e., phosphors) is characterized by the formula AE1−x−y−uAy+uBe1−y−z−vBy+z+vSi1−z AlzO1−vN2+v: Eux,Ceu, where AE=Ba, Sr, Ca, Mg; A=Li, Na, K, Rb; 0≤x≤0.1; 0≤ u≤0.1; 0
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6.发明申请公开(公告)号：US20220140205A1
公开(公告)日：2022-05-05
申请号：US17576757
申请日：2022-01-14
申请人： Lumileds LLC
发明人： Marcus Jozef Henricus KESSELS , Hans-Helmut BECHTEL , Johannes Willem Herman SILLEVIS SMITT , Wouter SOER
摘要： A light emitting device comprises a first group of one or more LEDs each configured to emit light having a blue color point in the 1931 CIE x,y Chromaticity Diagram, a second group of one or more LEDs each configured to emit light having a cyan or yellow color point in the 1931 CIE x,y Chromaticity Diagram, and a third group of one or more LEDs each configured to emit light having a red color point in the 1931 CIE x,y Chromaticity Diagram.
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公开(公告)号：US20190140146A1
公开(公告)日：2019-05-09
申请号：US16096598
申请日：2017-04-17
申请人： Lumileds LLC
发明人： Hans-Helmut BECHTEL , Erik ROELING
摘要： A light-emitting diode or device (LED) package includes a substrate, a white LED above the substrate, and a violet LED or laser above a wavelength converter of the white LED or laterally offset from the wavelength converter.
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公开(公告)号：US20220146058A1
公开(公告)日：2022-05-12
申请号：US17580166
申请日：2022-01-20
申请人： LUMILEDS LLC
发明人： Wouter SOER , Hans-Helmut BECHTEL
摘要： A light emitting device is disclosed and includes an emission source configured to emit a primary blue light and a wavelength-converting element configured to convert the primary blue light to a secondary light, where the wavelength-converting element including a red phosphor material having a peak emission wavelength that is less than 620 nm and a green phosphor material having a peak emission wavelength that is greater than 530 nm. The device may have a correlated color temperature (CCT) in the range of 1600K-2500K, may exhibit a melanopic/photopic ratio less than 0.25 and/or may exhibit a radiometric power fraction of light having a wavelength below 530 nm below 0.1.
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公开(公告)号：US20190137063A1
公开(公告)日：2019-05-09
申请号：US16306310
申请日：2017-05-23
申请人： Lumileds LLC
发明人： Hans-Helmut BECHTEL , Ulrich HECHTFISCHER , Thomas DIEDERICH , Matthias HEIDEMANN , Niels Jeroen VAN DER VEEN
IPC分类号： F21S41/16 , F21S41/176 , F21S41/24
摘要： A translucent body's first surface is coupled to a top surface of a light converter. The light converter's bottom surface is coupled to a reflective bottom layer. A light coupling structure includes a hole in the reflective bottom layer and at least a slot in the light converter for receiving a light guide, and a light coupling surface for receiving laser light with a laser peak emission wavelength via the light guide. The light coupling surface is arranged so at least 80% of the laser light passing the light coupling surface is received by the translucent body. The translucent body comprises a second surface which is opposite the first surface and is coupled to a reflective top layer for reflecting at least part of the laser light back to the light converter. A peak emission wavelength of the converted light has a longer wavelength than the laser peak emission wavelength.
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