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公开(公告)号：US20220375397A1
公开(公告)日：2022-11-24
申请号：US17326531
申请日：2021-05-21
申请人： Lumileds LLC
发明人： Wilhelmus Johannes Robertus Van Lier , Marcus Hendrikus Adrianus van Steen , Nicola Bettina Pfeffer , Rob Jacques Paul Engelen , Erkan Diken , Arjen Gerben Van Der Sijde
摘要： A driver system controls a plurality of light emitting diodes (LEDs). The driver system includes a first driver to provide an LED current to each of the plurality of LEDs. The first driver includes a current mirror for the LED current provided to the plurality of LEDs. The driver system also includes a second driver to modulate the LED current provided to the plurality of LEDs.
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公开(公告)号：US11204539B2
公开(公告)日：2021-12-21
申请号：US16370268
申请日：2019-03-29
申请人： Lumileds LLC
摘要： Methods and systems for color error correction for a segmented LED array are disclosed. A method includes calculating a target luminance for LED segments in a segmented LED array based on an initial luminance pattern, determining a luminance ratio based on the target luminance, the luminance ratio defined as a ratio of a primary luminance value of the primary LED segment to a secondary luminance value of the at least one adjacent LED segment, and comparing the luminance ratio to a predefined threshold ratio. If the luminance ratio is greater than or equal to the predefined ratio, then the secondary luminance value of the at least one adjacent LED segment is maintained. If the luminance ratio is less than the predefined ratio, then the secondary luminance value of the at least one adjacent LED segment is increased.
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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：US10222681B2
公开(公告)日：2019-03-05
申请号：US15803803
申请日：2017-11-05
申请人： Lumileds LLC
IPC分类号： H01L33/00 , H05B41/36 , G03B15/02 , H05B33/08 , F21V5/04 , F21K9/64 , H01L33/50 , H01L27/15 , H05B37/02 , F21Y115/10 , G03B15/03
摘要： A segmented light or optical power emitting device and an illumination device are described. The segmented device includes a die having a light or optical power emitting semiconductor structure that includes an active layer disposed between an n-layer and a p-layer. Trenches are formed in at least the semiconductor structure and separate the die into individually addressable segments. The active layer emits light or optical power having a first color point or spectrum. At least one wavelength converting layer is adjacent the die and converts the light or optical power to light or optical power having at least one second color point or spectrum and limits an energy ratio of the pump light or optical power that passes through the at least one wavelength converting layer unconverted to total light or optical power emitted by the light or optical power emitting device to less than 10%.
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公开(公告)号：US11900859B2
公开(公告)日：2024-02-13
申请号：US17326531
申请日：2021-05-21
申请人： Lumileds LLC
发明人： Wilhelmus Johannes Robertus Van Lier , Marcus Hendrikus Adrianus van Steen , Nicola Bettina Pfeffer , Rob Jacques Paul Engelen , Erkan Diken , Arjen Gerben Van Der Sijde
IPC分类号： G09G3/32 , G09G3/20 , H01L29/786
CPC分类号： G09G3/32 , G09G3/2003 , G09G2300/0452 , G09G2300/0804 , G09G2300/0809 , H01L29/78669
摘要： A driver system controls a plurality of light emitting diodes (LEDs). The driver system includes a first driver to provide an LED current to each of the plurality of LEDs. The first driver includes a current mirror for the LED current provided to the plurality of LEDs. The driver system also includes a second driver to modulate the LED current provided to the plurality of LEDs.
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公开(公告)号：US20220377222A1
公开(公告)日：2022-11-24
申请号：US17326494
申请日：2021-05-21
申请人： Lumileds LLC
发明人： Erkan Diken , Arjen Gerben Van Der Sijde , Nicola Bettina Pfeffer , Wilhelmus Johannes Robertus Van Lier , Marcus Hendrikus Adrianus van Steen , Rob Jacques Paul Engelen
摘要： An apparatus includes a neuromorphic vision unit, an array, and a controller. The neuromorphic vision unit includes a plurality of pixels to photoelectrically produce data based on light received from an object in a scene. The array includes a plurality of light sources. The controller controls the plurality of light sources at one of a plurality of granularities, at least in part based on the data.
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公开(公告)号：US11350022B2
公开(公告)日：2022-05-31
申请号：US16999401
申请日：2020-08-21
申请人： Lumileds LLC
发明人： Arjen Gerben Van Der Sijde , Erno Fancsali , Nicola Bettina Pfeffer , Pieter Johannes Quintus van Voorst Vader
摘要： The invention describes an infrared imaging assembly (1) for capturing an infrared image (M0, M1) of a scene (S), comprising an infrared-sensitive image sensor (14); an irradiator (10) comprising an array of individually addressable infrared-emitting LEDs, wherein each infrared-emitting LED is arranged to illuminate a scene region (S1, . . . , S9); a driver (11) configured to actuate the infrared irradiator (10) by applying a switching pulse train (T1, . . . , T9) to each infrared-emitting LED; an image analysis module (13) configured to analyse a preliminary infrared image (M0) to determine the required exposure levels (130) for each of a plurality of image regions (R1, . . . , R9); and a pulse train adjusting unit (12) configured to adjust the duration (L1, . . . , L9) of a switching pulse train (T1, . . . , T9) according to the required exposure levels (130). The invention also described a method of generating a depth map (D) for a scene (S); a depth map generator comprising an embodiment of the inventive infrared imaging assembly (1); and a camera comprising such a depth map generator (2).
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公开(公告)号：US11800233B2
公开(公告)日：2023-10-24
申请号：US17326494
申请日：2021-05-21
申请人： Lumileds LLC
发明人： Erkan Diken , Arjen Gerben Van Der Sijde , Nicola Bettina Pfeffer , Wilhelmus Johannes Robertus Van Lier , Marcus Hendrikus Adrianus van Steen , Rob Jacques Paul Engelen
IPC分类号： H04N23/72 , H04N23/56 , H04N23/73 , H04N23/74 , H04N25/47 , H04N23/61 , H04N23/00 , H04N23/741
CPC分类号： H04N23/72 , H04N23/56 , H04N23/61 , H04N23/73 , H04N23/74 , H04N23/00 , H04N23/741 , H04N25/47
摘要： An apparatus includes a neuromorphic vision unit, an array, and a controller. The neuromorphic vision unit includes a plurality of pixels to photoelectrically produce data based on light received from an object in a scene. The array includes a plurality of light sources. The controller controls the plurality of light sources at one of a plurality of granularities, at least in part based on the data.
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公开(公告)号：US11361460B2
公开(公告)日：2022-06-14
申请号：US16952768
申请日：2020-11-19
申请人： Lumileds LLC
摘要： Multi-color flash with image post-processing that uses a camera device with a multi-color flash and implements post-processing to generate images is described. In one aspect, the multi-color flash with image post-processing may be implemented by a controller configured to control a camera and flashes of at least two different colors. The controller may be configured to cause the camera to acquire a first image of a scene while the scene is being illuminated with the first flash but not the second flash, then cause the camera to acquire a second image of the scene while the scene is being illuminated with the second flash but not the first flash, and generate a final image of the scene in post-processing based on a combination of the first image and the second image.
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