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公开(公告)号：US11791445B2
公开(公告)日：2023-10-17
申请号：US17873293
申请日：2022-07-26
申请人： Lumileds LLC
IPC分类号： H01L33/58 , H01L27/15 , H01L33/50 , G02F1/01 , G02F1/163 , H01L25/075 , G02F1/015 , H10K50/86 , F21S41/141 , F21S41/40 , F21V14/00 , F21S41/64 , F21V23/00 , F21V23/02 , F21Y115/10
CPC分类号： H01L33/58 , F21S41/141 , F21S41/40 , F21V14/003 , G02F1/015 , G02F1/0126 , G02F1/0147 , G02F1/163 , H01L25/0753 , H01L27/156 , H01L33/50 , H10K50/865 , F21S41/64 , F21S41/645 , F21V23/005 , F21V23/02 , F21Y2115/10 , G02F2203/01 , G02F2203/02 , G02F2203/03 , H01L2933/0091
摘要： A lighting device comprises a light-emitting module with light-emitting elements, wherein the light-emitting elements are arranged adjacent to each other and are configured to emit light towards a light-emitting side. The light-emitting module is configured such that the light-emitting elements can be addressed partially independently of each other, such that some may be brought into a switched-on state while others are brought into a switched-off state. A top layer is disposed on the light-emitting module at the light-emitting side. Further comprising a switching material capable of a reversible change in transmittance for the light emitted by changing to a higher transmittance in regions where the top layer situated on light-emitting elements in the switched-on state or to a lower transmittance in regions of the top layer situated in the switched-off state. The invention further refers to methods for producing and operating a lighting device and using a lighting device.
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公开(公告)号：US20230254563A1
公开(公告)日：2023-08-10
申请号：US18104084
申请日：2023-01-31
申请人： Lumileds LLC
CPC分类号： H04N23/56 , H04N23/675
摘要： An imaging system can automatically measure a distance to an object. A camera, having a field of view that includes the object, can define a camera longitudinal axis that extends to a center of the field of view. An illuminator, defining an illuminator longitudinal axis that is substantially parallel to the camera longitudinal axis and is laterally offset from the camera longitudinal axis, can illuminate the object with an illumination field. The illumination field can have an illumination field central axis that is angularly offset from the illuminator longitudinal axis by an angle that depends at least in part on the measured distance to the object to at least partially compensate for parallax error caused by the lateral offset between the illuminator longitudinal axis and the camera longitudinal axis. The camera can capture an image of the object while the illuminator illuminates the object with the illumination field.
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公开(公告)号：US20230167970A1
公开(公告)日：2023-06-01
申请号：US18070740
申请日：2022-11-29
申请人： Lumileds LLC
CPC分类号： F21V23/005 , H05B45/12 , F21Y2115/10
摘要： A mobile device contains an integrated structure (e.g., a semiconductor structure) that includes an LED matrix with one or more LED arrays and sensors on at least opposing edges of the LED matrix. Each LED array has LEDs that are separated by non-emitting areas and the LEDs are independently driven to provide light. The light is converted to white light using a phosphor disposed on the LEDs. The sensors detect ambient light or flicker. The semiconductor structure is attached to a semiconductor driver via conductive pillars and underfill between the conductive pillars. The driver is coupled to a PCB. The PCB is electrically coupled to the semiconductor structure via PCB contacts and LED contacts to drive the LEDs dependent on the ambient light.
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公开(公告)号：US11662081B2
公开(公告)日：2023-05-30
申请号：US17096013
申请日：2020-11-12
申请人： Lumileds LLC
CPC分类号： F21V14/06 , G02B27/0172 , H04N5/2256 , B82Y20/00
摘要： An adaptive lighting system comprises an array of independently controllable LEDs, and a metalens positioned to collimate, focus, or otherwise redirect light emitted by the array of LEDs. The adaptive lighting system may optionally include a pre-collimator positioned in the optical path between the array of LEDs and the metalens.
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公开(公告)号：US20230137928A1
公开(公告)日：2023-05-04
申请号：US17978678
申请日：2022-11-01
申请人： Lumileds LLC
发明人： Nicola Bettina Pfeffer , Arjen Gerben Van der Sijde , Pieter Johannes Quintus van Voorst Vader , Marcus Hendrikus Adrianus van Steen , Ronald Johannes Bonne
摘要： A sensor can sense time-varying ambient light that is present in a scene to produce an ambient light signal. A processor can determine an ambient light frequency and an ambient light phase of the ambient light signal. Light-emitting diodes (LEDs) of an LED array can be electrically powered with pulse-width modulation (PWM) electrical signals having a same amplitude to produce illumination. Each LED can illuminate a respective region of the scene. Each PWM electrical signal can have a respective duty cycle that corresponds to a specified illumination intensity in a respective region of the scene. The PWM electrical signals can have a same PWM frequency that is an integral multiple of the ambient light frequency. Each PWM electrical signal can have a respective PWM phase that is synchronized to the ambient light phase. A lens can direct the illumination toward the scene to illuminate the scene.
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公开(公告)号：US20220113613A1
公开(公告)日：2022-04-14
申请号：US17496424
申请日：2021-10-07
申请人： Lumileds LLC
摘要： In a projection display system, a polarizing beamsplitter can split an unpolarized light beam into a first internal beam and a second internal beam, which can have polarization states that are orthogonal. A polarization rotator, such as a half-wave plate, can rotate a plane of polarization of at least one of the first internal beam or the second internal beam. A beam aligner, such as a second polarizing beamsplitter, can change a propagation direction of at least one of the first internal beam or the second internal beam. The polarization rotator and the beam aligner each can adjust at least one of the first or second internal beams such that the first internal beam forms a first exiting beam and the second internal beam forms a second exiting beam. The first exiting beam and the second exiting beam can be adjacent and parallel and have parallel polarization states.
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公开(公告)号：US11236870B2
公开(公告)日：2022-02-01
申请号：US17066132
申请日：2020-10-08
申请人： Lumileds LLC
IPC分类号： F21K9/69 , F21V5/04 , G02B27/30 , G02B3/08 , G02B19/00 , F21Y115/10 , F21Y105/16 , F21V7/00
摘要： In an illumination system, a lens can substantially collimate light that is emitted from a location on a light source. The emitted light can have a central light portion and a peripheral light portion. The lens can have a first surface that faces the light source and a second surface opposite the first surface. The first surface can include a first convex central portion and a first total internal reflection (TIR) portion. The second surface can include a second convex central portion and a second TIR portion. The first and second convex central portions can substantially collimate the central light portion via refraction at the first convex central portion and refraction at the second convex central portion. The first and second TIR portions can substantially collimate the peripheral light portion via total internal reflection at the first TIR portion and total internal reflection at the second TIR portion.
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公开(公告)号：US20210404611A1
公开(公告)日：2021-12-30
申请号：US17066132
申请日：2020-10-08
申请人： Lumileds LLC
摘要： In an illumination system, a lens can substantially collimate light that is emitted from a location on a light source. The emitted light can have a central light portion and a peripheral light portion. The lens can have a first surface that faces the light source and a second surface opposite the first surface. The first surface can include a first convex central portion and a first total internal reflection (TIR) portion. The second surface can include a second convex central portion and a second TIR portion. The first and second convex central portions can substantially collimate the central light portion via refraction at the first convex central portion and refraction at the second convex central portion. The first and second TER portions can substantially collimate the peripheral light portion via total internal reflection at the first TIR portion and total internal reflection at the second TIR portion.
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公开(公告)号：US20210325712A1
公开(公告)日：2021-10-21
申请号：US17217814
申请日：2021-03-30
申请人： Lumileds LLC
IPC分类号： G02F1/13357 , F21V8/00
摘要： A backlight apparatus can include a light emitting element configured to emit visible light. The backlight apparatus can include a polarizing device including a prism situated to receive the visible light and to polarize the visible light to generate polarized light. The backlight apparatus can include a light guide panel configured to receive the polarized light at an input surface facing the polarizing device and to distribute the polarized light to a major surface of the light guide panel facing a display screen.
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公开(公告)号：US11145191B2
公开(公告)日：2021-10-12
申请号：US16467720
申请日：2017-11-29
申请人： Lumileds LLC
摘要： A flash light module (1) can include a housing (30) carrying at least a visible flash light emitter (10) to emit a flash light beam along an optical axis (OA) and at least one additional emitter (20) emitting non-visible light arranged at a second distance (D2) perpendicular to the optical axis (OA), where position and orientation of the additional emitter (20) and at least the second distances (D2) are suitably adapted as well as the housing (30) is suitably shaped in order to enable the additional emitter (20) to emit non-visible light (22) along a non-visible light emitting direction (IRD), wherein the additional emitter (20) is adapted to emit the non-visible light (22) to the environment suitable to remote communicate to, preferably to remote control, external electronic devices (5) comprising corresponding receivers for the non-visible light (22). A mobile device (100) can include the flash light module (1) and a method to operate the mobile device (100).
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