Patents by Inventor Charles Schrama
Charles Schrama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11835362Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.Type: GrantFiled: October 13, 2021Date of Patent: December 5, 2023Assignee: Lumileds LLCInventors: Charles Schrama, Cristian Dan
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Patent number: 11610325Abstract: 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.Type: GrantFiled: June 1, 2022Date of Patent: March 21, 2023Assignee: Lumileds LLCInventors: Charles Schrama, Nicola Bettina Pfeffer, Arjen Gerben Van der Sijde
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Publication number: 20220292700Abstract: 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.Type: ApplicationFiled: June 1, 2022Publication date: September 15, 2022Applicant: LUMILEDS LLCInventors: Charles Schrama, Nicola Bettina Pfeffer, Arjen Gerben Van der Sijde
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Patent number: 11417806Abstract: LED devices and methods of operating LED devices are described. An LED device includes a light-emitting element, a wavelength converting layer and a dichroic mirror. The light-emitting element is configured to emit ultra violet, visible, or ultra violet and visible light. The wavelength converting layer is configured to absorb at least a portion of the light emitted by the light-emitting element and in response emit infrared light. The dichroic mirror transmits the infrared light emitted by the wavelength converting layer, reflects the light emitted by the light emitting element, and is arranged to reflect back into the wavelength converting layer light emitted by the light emitting element, transmitted unabsorbed through the wavelength converting layer, and incident on the dichroic mirror.Type: GrantFiled: March 29, 2019Date of Patent: August 16, 2022Assignee: Lumileds LLCInventor: Charles Schrama
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Publication number: 20220214493Abstract: A light source useful for architectural lighting, general lighting, street lighting, or other lighting applications includes a plurality of light emitting diodes. A least some light emitting diodes can be sized between 30 microns and 500 microns. A plurality of micro-optics sized less than 1 millimeter are positioned over at least some of the plurality of light emitting diodes. A controller may be connected to selectively power groups of the plurality of light emitting diodes to provide different light beam patterns.Type: ApplicationFiled: March 24, 2022Publication date: July 7, 2022Applicant: LUMILEDS LLCInventors: Sudhir SUBRAMANYA, Willem SILLEVIS-SMITT, Frederic DIANA, Charles SCHRAMA, Alan McREYNOLDS, Yifeng QIU
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Patent number: 11361460Abstract: 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.Type: GrantFiled: November 19, 2020Date of Patent: June 14, 2022Assignee: Lumileds LLCInventors: Charles Schrama, Nicola Bettina Pfeffer, Arjen Gerben Van Der Sijde
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Patent number: 11333821Abstract: A light source useful for architectural lighting, general lighting, street lighting, or other lighting applications includes a plurality of light emitting diodes. A least some light emitting diodes can be sized between 30 microns and 500 microns. A plurality of micro-optics sized less than 1 millimeter are positioned over at least some of the plurality of light emitting diodes and a controller is connected to selectively power groups of the plurality of light emitting diodes to provide different light beam patterns.Type: GrantFiled: September 26, 2019Date of Patent: May 17, 2022Assignee: LUMILEDS LLCInventors: Sudhir Subramanya, Willem Sillevis-Smitt, Frederic Diana, Charles Schrama, Alan McReynolds, Yifeng Qiu
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Patent number: 11314012Abstract: A light source useful for architectural lighting, general lighting, street lighting, or other lighting applications includes a plurality of light emitting diodes, with at least some light emitting diodes sized between 50 microns and 500 microns. A plurality of micro-optics sized less than 1 millimeter are positioned over at least some of the plurality of light emitting diodes. Each combination of light emitting diode and associated micro-optic is positioned within a Rayleigh distance to each other, sufficient to both present a substantially uniform visual appearance and provide a substantially uniform light beam. In some embodiments the height of the light emitting diodes, their supporting substrate and electrical traces, and associated optics is less than 5 millimeters.Type: GrantFiled: September 26, 2019Date of Patent: April 26, 2022Assignee: Lumileds LLCInventors: Sudhir Subramanya, Willem Sillevis-Smitt, Frederic Diana, Charles Schrama, Alan McReynolds, Yifeng Qiu
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Publication number: 20220065624Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.Type: ApplicationFiled: October 13, 2021Publication date: March 3, 2022Applicant: Lumileds LLCInventors: Charles Schrama, Cristian Dan
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Patent number: 11194091Abstract: A light source includes a plurality of light emitting diodes, with at least some light emitting diodes sized between 30 microns and 500 microns. A plurality of micro-optics are associated with a light guide plate and sized less than 1 millimeter, with each micro-optic positioned over at least one of the plurality of light emitting diodes. At least some of the combinations of light emitting diode and micro-optics associated with the light guide plate are positioned within a distance to each other sufficient to provide a substantially uniform light beam.Type: GrantFiled: September 26, 2019Date of Patent: December 7, 2021Assignee: Lumileds LLCInventors: Sudhir Subramanya, Willem Sillevis-Smitt, Frederic Diana, Charles Schrama, Alan McReynolds, Yifing Qiu
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Patent number: 11150088Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.Type: GrantFiled: May 11, 2020Date of Patent: October 19, 2021Assignee: Lumileds LLCInventors: Charles Schrama, Cristian Dan
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Patent number: 11076083Abstract: 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.Type: GrantFiled: December 5, 2019Date of Patent: July 27, 2021Assignee: Lumileds LLCInventors: Charles Schrama, Nicola Bettina Pfeffer, Arjen van der Sijde
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Publication number: 20210181521Abstract: A near field line pattern generator includes a double grating and at least one light emitting diode (LED). The double grating includes a first grating and a second grating, each having alternating light blocking sections and light transmitting sections. The LED emits light directed at the double grating assembly such that a first portion of light passes through the first grating, and a second portion of the light passed through the first grating passes through the second grating. The light passing through the second grating forms a line pattern at a focal distance from the double grating assembly. The line pattern has alternating bright portions and dark portions. In some aspects, the pitch of the second grating is less than the pitch of the first grating. In some aspects, the near field line pattern generator also includes a convergent lens for focusing the line pattern at the focal distance.Type: ApplicationFiled: December 13, 2019Publication date: June 17, 2021Applicant: Lumileds Holding B.V.Inventors: Charles Schrama, Mehdi Aas
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Patent number: 11018183Abstract: Described herein is source sensitive optic that uses reconfigurable chip-on-board (CoB) light emitting diode (LED) arrays as light sources. In an implementation, the reconfigurable CoB LED array includes a predetermined number of LEDs that are configurable for a variety of illumination scenarios. In an implementation, the reconfigurable CoB LED array is multiple CoB LED arrays that are configured for use with the source sensitive optic as described herein. The source sensitive optic includes surface shapes that are responsive to the reconfigurable CoB LED array. The source sensitive optic is configured to provide beam profile and radiation pattern differentiation based on a CoB LED array configuration configured from the reconfigurable CoB LED. Each configurable CoB LED array configuration radiates a different beam pattern via the surface shapes due to proximity and surface shape geometries.Type: GrantFiled: May 3, 2019Date of Patent: May 25, 2021Assignee: Lumileds LLCInventors: Charles Schrama, Varun Dev Kakkar, Erno Fancsali
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Publication number: 20210152719Abstract: 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.Type: ApplicationFiled: December 5, 2019Publication date: May 20, 2021Applicant: Lumileds Holding B.V.Inventors: Charles Schrama, Nicola Bettina Pfeffer, Arjen van der Sijde
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Publication number: 20210150743Abstract: 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.Type: ApplicationFiled: November 19, 2020Publication date: May 20, 2021Applicant: Lumileds Holding B.V.Inventors: Charles Schrama, Nicola Bettina Pfeffer, Arjen Gerben Van Der Sijde
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Publication number: 20200363198Abstract: A distance measurement system includes two or more line pattern generators (LPGs), a camera, and a processor. Each LPG emits a line pattern having a first set of dark portions separated by a respective first set of bright portions. A first line pattern has a first angular distance between adjacent bright portions, and a second line pattern has a second angular distance between adjacent bright portions. The camera captures at least one image of the first line pattern and the second line pattern. The camera is a first distance from the first LPG and a second distance from the second LPG. The processor identifies a target object illuminated by the first and second line patterns and determines a distance to the target object based on the appearance of the target object as illuminated by the first and second line patterns.Type: ApplicationFiled: May 11, 2020Publication date: November 19, 2020Applicant: Lumileds LLCInventors: Charles Schrama, Cristian Dan
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Patent number: 10771717Abstract: The image capture system of the present disclosure comprises an illuminator comprising at least one infrared light LED or laser and one visible light LED, an image sensor that is sensitive to infrared light and visible light, a memory configured to store instructions, and a processor configured to execute instructions to cause the image capture system to emit infrared light, receive image data comprising at least one infrared image, and determine depth maps, visible focus settings, or infrared exposure settings based on the infrared image data.Type: GrantFiled: January 25, 2019Date of Patent: September 8, 2020Assignee: Lumileds LLCInventors: Arjen Van Der Sijde, Nicola Pfeffer, Charles Schrama
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Publication number: 20200103581Abstract: A light source includes a plurality of light emitting diodes, with at least some light emitting diodes sized between 30 microns and 500 microns. A plurality of micro-optics are associated with a light guide plate and sized less than 1 millimeter, with each micro-optic positioned over at least one of the plurality of light emitting diodes. At least some of the combinations of light emitting diode and micro-optics associated with the light guide plate are positioned within a distance to each other sufficient to provide a substantially uniform light beam.Type: ApplicationFiled: September 26, 2019Publication date: April 2, 2020Applicant: LUMILEDS HOLDING B.V.Inventors: Sudhir Subramanya, Willem Sillevis-Smitt, Frederic Diana, Charles Schrama, Alan McReynolds, Yifing Qiu
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Publication number: 20200103091Abstract: A light source useful for architectural lighting, general lighting, street lighting, or other lighting applications includes a plurality of light emitting diodes, with at least some light emitting diodes sized between 50 microns and 500 microns. A plurality of micro-optics sized less than 1 millimeter are positioned over at least some of the plurality of light emitting diodes. Each combination of light emitting diode and associated micro-optic is positioned within a Rayleigh distance to each other, sufficient to both present a substantially uniform visual appearance and provide a substantially uniform light beam. In some embodiments the height of the light emitting diodes, their supporting substrate and electrical traces, and associated optics is less than 5 millimeters.Type: ApplicationFiled: September 26, 2019Publication date: April 2, 2020Applicant: LUMILEDS HOLDING B.V.Inventors: Sudhir Subramanya, Willem Sillevis-Smitt, Frederic Diana, Charles Schrama, Alan McReynolds, Yifing Qiu