-
公开(公告)号：US11982431B2
公开(公告)日：2024-05-14
申请号：US17926974
申请日：2021-05-20
申请人： Lumileds LLC
发明人： Nicola Bettina Pfeffer , Frederic Stephane Diana , Kevin-Gx Jiao , Charles André Schrama , Arjen Gerben Van der Sijde , Alan Andrew McReynolds , Yifeng Qiu
IPC分类号： F21V23/00 , F21S4/22 , G03B15/03 , H04M1/02 , H04N23/56 , H04N23/57 , H05B45/30 , F21Y115/10
CPC分类号： F21V23/005 , F21S4/22 , G03B15/03 , H04M1/0264 , H04N23/56 , H04N23/57 , H05B45/30 , F21Y2115/10 , G03B2215/0567
摘要： A LED lighting module is described that is realized as a printed circuit assembly. The LED lighting module has a carrier with a strip of dielectric material and conductive circuit tracks printed on the dielectric material. Bare LED dies are mounted in a linear formation on the carrier. The width of the LED die formation does not exceed 0.75 mm and the area of the emission face of an LED die does not exceed 0.0625 mm2. Drivers are mounted on the carrier and are connected to drive the LED dies.
-
公开(公告)号：US11940144B2
公开(公告)日：2024-03-26
申请号：US18200298
申请日：2023-05-22
申请人： Lumileds LLC
IPC分类号： F21V5/04 , F21S8/08 , F21Y115/10
CPC分类号： F21V5/045 , F21S8/086 , F21V2200/20 , F21Y2115/10
摘要： A luminaire can include a curved light guide plate including a first receiving surface, an emitting surface, a major surface opposing the emitting surface, second and third receiving surfaces, the first receiving surface extending in a first dimension between the major surface and the emitting surface and extending in a second dimension between the second and third receiving surfaces, the first receiving surface, emitting surface, and major surface including a positive, non-zero radius of curvature (R) and the second and third receiving surfaces generally planar, and a plurality of LEDs positioned to emit light into one or more of the first: receiving surface, second receiving surface, third receiving surface, or a fourth receiving surface, the fourth receiving surface opposing the first receiving surface.
-
公开(公告)号：US20230288628A1
公开(公告)日：2023-09-14
申请号：US18198554
申请日：2023-05-17
申请人： Lumileds LLC
IPC分类号： F21V8/00 , G02F1/01 , G02F1/13357
CPC分类号： G02B6/0038 , G02F1/0136 , G02B6/0083 , G02B6/0056 , G02F1/13362
摘要： In a projection display system, a light-emitting diode (LED) can generate unpolarized light. A light guide can receive the unpolarized light from a perimeter of the light guide and guide the unpolarized light between a light emission surface and an opposing surface as guided light. The light guide can include a plurality of light-extraction features that can direct a portion of the guided light out of the light guide through the light emission surface as unpolarized emitted light. A polarizing film can reflect at least some of a first polarization state of the unpolarized emitted light into the light guide through the light emission surface and can transmit at least some of a second polarization state of the unpolarized emitted light through the polarizing film to form a polarized light beam. An angular reduction film can reduce a range of propagation angles of the polarized light beam.
-
公开(公告)号：US11098860B2
公开(公告)日：2021-08-24
申请号：US16694726
申请日：2019-11-25
申请人： Lumileds LLC
IPC分类号： F21S4/24 , H05B45/00 , H05B45/46 , H05B45/395 , F21V21/08 , F21Y115/10
摘要： A light-emitting diode (LED) strip is disclosed. The LED strip includes: an input terminal for receiving a first reference signal, a first LED coupled to an end of a power bus and driven by a first current signal, the first current signal being supplied to the first LED via the power bus; a current-copying circuit arranged to control a flow rate of the first current signal based on the first reference signal; and a first switching element arranged to re-couple the first LED to the power bus when the first LED is disconnected from the end of the power bus as a result of the LED strip being cut at a first location.
-
公开(公告)号：US20210190293A1
公开(公告)日：2021-06-24
申请号：US17121482
申请日：2020-12-14
申请人： Lumileds LLC
摘要： A luminaire can include a curved light guide plate including a first receiving surface, an emitting surface, a major surface opposing the emitting surface, second and third receiving surfaces, the first receiving surface extending in a first dimension between the major surface and the emitting surface and extending in a second dimension between the second and third receiving surfaces, the first receiving surface, emitting surface, and major surface including a positive, non-zero radius of curvature (R) and the second and third receiving surfaces generally planar, and a plurality of LEDs positioned to emit light into one or more of the first receiving surface, second receiving surface, third receiving surface, or a fourth receiving surface, the fourth receiving surface opposing the first receiving surface.
-
公开(公告)号：US10809436B2
公开(公告)日：2020-10-20
申请号：US15610245
申请日：2017-05-31
申请人： Lumileds LLC
摘要： A method, apparatus, and system are disclosed for increasing light extraction efficiency in a light guide optical system. The light guide optical system may comprise a light emitting source. The light emitting source may be, for example, a light-emitting diode (LED) or plurality of LEDS. The light guide optical system may also comprise a light guide plate (LGP). The LGP may include light extraction features located on surfaces of the LGP. The LGP may also include a shaped injection surface on an input surface of the LGP. The shaped injection surface may be angled to deviate near-parallel light emitted from the LED to enable the near-parallel light emitted from the LED to be extracted from the LGP via the light extraction features. The shaped injection surface may be a split edge (i.e. a V-groove) or a curved edge.
-
公开(公告)号：US20200305251A1
公开(公告)日：2020-09-24
申请号：US16895780
申请日：2020-06-08
申请人： Lumileds LLC
摘要： An interface currents channeling circuit may be used to convert two current channels of a conventional two-channel driver into three driving currents for the three strings of LEDs. By doing so, the same two channel driver can be used for applications requiring just two LED arrays as well as three LED arrays.
-
公开(公告)号：US10785847B2
公开(公告)日：2020-09-22
申请号：US16014734
申请日：2018-06-21
申请人： Lumileds LLC
发明人： Frederic Stephane Diana , Yifeng Qiu , Michael Wasilko , Nazila Soleimani , Jeroen Den Breejen , Alan Andrew McReynolds , Gregory Guth
IPC分类号： H05B47/105 , F21S4/20 , F21V29/70 , F21V23/04
摘要： An apparatus is disclosed comprising: a light guide having an opening formed thereon; an illumination source at least partially disposed in the opening, the illumination source including a plurality of LEDs disposed on a flexible circuit that is wrapped around a base, which may be thermally conductive, the base having a central opening, and the flexible circuit including a plurality of legs, each leg including electrical wiring for independently operating a different one of the LEDs, each leg being wrapped around a bottom edge of the base, and into the central opening, to come above the illumination source and connect to a control board that is situated above the illumination source; and a heat-dissipating element disposed over the illumination source, the heat-dissipating element being thermally coupled to the base to dissipate heat generated by the LEDs that is supplied to the heat dissipating element via the base.
-
公开(公告)号：US20200152837A1
公开(公告)日：2020-05-14
申请号：US16742729
申请日：2020-01-14
申请人： Lumileds LLC
IPC分类号： H01L33/46 , H01L33/64 , H01L33/54 , H01L33/50 , H01L33/38 , H01L33/08 , H01L27/15 , G09G3/34 , H05B47/10
摘要： A light emitting device comprises a detector circuit and a light emitting diode (LED) die. The LED die includes a semiconductor stack grown on a substrate. The LED includes an emitter segment formed from one segment of the semiconductor stack. The LED die includes a photosensor segment formed from another segment of the semiconductor stack. The LED die includes a segmentation layer formed between the emitter segment and the photosensor segment. The segmentation layer electrically isolates the emitter segment from the photosensor segment. The LED die includes first electrodes configured to provide power to energize the emitter segment. The LED die includes second electrodes configured to send the current to the detector circuit. The detector circuit is configured to convert the current to a signal which provides operational feedback with respect to the emitter segment.
-
公开(公告)号：US20190342975A1
公开(公告)日：2019-11-07
申请号：US16014734
申请日：2018-06-21
申请人： Lumileds LLC
发明人： Frederic Stephane Diana , Yifeng Qiu , Michael Wasilko , Nazila Soleimani , Jeroen Den Breejen , Alan Andrew McReynolds , Gregory Guth
摘要： An apparatus is disclosed comprising: a light guide having an opening formed thereon; an illumination source at least partially disposed in the opening, the illumination source including a plurality of LEDs disposed on a flexible circuit that is wrapped around a base, which may be thermally conductive, the base having a central opening, and the flexible circuit including a plurality of legs, each leg including electrical wiring for independently operating a different one of the LEDs, each leg being wrapped around a bottom edge of the base, and into the central opening, to come above the illumination source and connect to a control board that is situated above the illumination source; and a heat-dissipating element disposed over the illumination source, the heat-dissipating element being thermally coupled to the base to dissipate heat generated by the LEDs that is supplied to the heat dissipating element via the base.
-
-
-
-
-
-
-
-
-
搜索结果
74 条记录 (耗时 0.019 秒)
