公开(公告)号：US20200232790A1

公开(公告)日：2020-07-23

申请号：US16748317

申请日：2020-01-21

申请人： LUMILEDS HOLDING B.V.

发明人： Varun Dev KAKKAR

IPC分类号： G01B11/25 ,  G02B27/09 ,  H01L25/075 ,  H01L33/60 ,  H01L33/48

摘要： A lighting system is described that includes a first lighting device, a second lighting device and a pattern element. The first lighting device includes at least one individual light-emitting element configured to emit light with a first beam profile. The second lighting device includes at least one individual light-emitting element configured to emit light with a second beam profile such that a third beam profile, different from the first beam profile and the second beam profile, is provided as a combination of the first beam profile and the second beam profile. The pattern element is configured to generate a pattern on at least one of the first beam profile and the second beam profile and a pattern on the third beam profile.

公开(公告)号：US20190033688A1

公开(公告)日：2019-01-31

申请号：US16071784

申请日：2017-01-16

申请人： Lumileds Holding B.V.

发明人： Varun Dev KAKKAR ,  Arjen VAN DER SIJDE ,  Erno FANCSALI ,  Chunxia FENG ,  Nicola PFEFFER

IPC分类号： G03B15/05 ,  F21V8/00 ,  H04N5/225

摘要： A device includes a light-emitting device (LED) having at least two vertical light-emitting sides, and a ring-shaped light guide having a bottom side, a top side comprising a light-emitting surface, an inner sidewall, and an outer sidewall defining an indentation having at least two vertical in-coupling surfaces mated to the at least two vertical light-emitting sides of the LED.

公开(公告)号：US20200174169A1

公开(公告)日：2020-06-04

申请号：US16697728

申请日：2019-11-27

申请人： Lumileds Holding B.V.

发明人： Rob ENGELEN ,  Varun Dev KAKKAR

IPC分类号： G02B5/28 ,  H04N5/235 ,  H04N5/225 ,  G01J1/08 ,  G01J1/04 ,  G01J1/42

摘要： Systems, methods and devices are for optical imaging are described. A system includes a light source and a light detection unit. The light source includes a light-emitting device and a first spectral filter opposite the light emitting device. The first spectral filter includes at least one dielectric filter and has a first angular dependence of a transmission passband. The light source further includes at least one reflector adjacent side surfaces of the light emitting device. The light detection unit includes an optical sensor and a second spectral filter opposite the optical sensor. The second spatial filter has a second angular dependence of a transmission passband that is matched to the first angular dependence.

公开(公告)号：US20190384141A1

公开(公告)日：2019-12-19

申请号：US16444447

申请日：2019-06-18

申请人： Lumileds Holding B.V.

发明人： Rob ENGELEN ,  Varun Dev KAKKAR

IPC分类号： G03B15/06

摘要： The invention refers to a lighting device comprising at least one light emitting diode (LED). The object to provide a lighting device that is capable of providing a light pattern for illuminating an object in 3D imaging, wherein the lighting device is simple and cost-effective to manufacture, while the lighting device may in addition have a very small form factor, is solved in with a lighting device comprising: at least one LED for emitting light towards a light-emitting side; a first grating with a regular pitch having light-blocking sections and light-permeable sections; wherein the first grating is arranged on the light-emitting side to block the passage of light at the light-blocking sections, such that the light passing the light-permeable sections is capable to illuminate an object with a line pattern. The invention further corresponds to a method for producing a lighting device and the use of a lighting device.

公开(公告)号：US20190146142A1

公开(公告)日：2019-05-16

申请号：US16098847

申请日：2016-11-08

申请人： Lumileds Holding B.V.

发明人： Varun Dev KAKKAR ,  Erno FANCSALI ,  Huub KONIJN

IPC分类号： F21V8/00

CPC分类号： G02B6/0073 ,  G02B6/0021 ,  G02B6/0055 ,  G02B6/0065 ,  G02B6/0083

摘要： A thin plastic light guide is formed to have cavities on one surface and TIR (total internal reflection) structures directly above the cavities. LEDs mounted on a printed circuit board are positioned in the cavities. The cavity walls are shaped to refract the LED light and direct the LED light toward the TIR structures to most efficiently make use of the TIR structures. The TIR structures may have a cusp or cone shape. The top ceiling of the cavities may be shaped to direct light at the TIR structure so as to leak through the TIR structure and blend the light with light leaking through surrounding portions of the light guide. The LEDs may be distributed only near the edges of the light guide or over the entire back surface of the light guide. A diffuser sheet may be laminated over the light guide to further mix the light.