Patents by Inventor Henk Derks
Henk Derks 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: 11809064Abstract: The invention describes a method of controlling a segmented flash (10) having a plurality of flash segments (S1, S2, . . . , Sn), which method comprises the steps of measuring the forward voltages (Vf1, Vf2, . . . , Vfn) of the flash segments (S1, S2, . . . , Sn); and adjusting the brightness of the flash segments (S1, S2, . . . , Sn) on the basis of the measured forward voltages (Vf1, Vf2, . . . , Vfn) to achieve a desired illumination profile (P) for the segmented flash (10). The invention further describes a segmented flash system (1) comprising a segmented flash (10) with a plurality of flash segments (S1, S2, . . . , Sn), wherein each flash segment (S1, S2, . . . , Sn) is arranged to illuminate a portion (20) of a scene (2); and a flash driver (11) adapted to perform the steps of the inventive method to adjust the brightness of the flash segments (S1, S2, . . . , Sn).Type: GrantFiled: August 30, 2022Date of Patent: November 7, 2023Assignee: Lumileds LLCInventor: Henk Derks
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Publication number: 20220413365Abstract: The invention describes a method of controlling a segmented flash (10) having a plurality of flash segments (S1, S2, . . . , Sn), which method comprises the steps of measuring the forward voltages (Vf1, Vf2, . . . , Vfn) of the flash segments (S1, S2, . . . , Sn); and adjusting the brightness of the flash segments (S1, S2, . . . , Sn) on the basis of the measured forward voltages (Vf1, Vf2, . . . , Vfn) to achieve a desired illumination profile (P) for the segmented flash (10). The invention further describes a segmented flash system (1) comprising a segmented flash (10) with a plurality of flash segments (S1, S2, . . . , Sn), wherein each flash segment (S1, S2, . . . , Sn) is arranged to illuminate a portion (20) of a scene (2); and a flash driver (11) adapted to perform the steps of the inventive method to adjust the brightness of the flash segments (S1, S2, . . . , Sn).Type: ApplicationFiled: August 30, 2022Publication date: December 29, 2022Inventor: Henk Derks
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Patent number: 11454867Abstract: The invention describes a method of controlling a segmented flash (10) having a plurality of flash segments (S1, S2, . . . , Sn), which method comprises the steps of measuring the forward voltages (Vf1, Vf2, . . . , Vfn) of the flash segments (S1, S2, . . . , Sn); and adjusting the brightness of the flash segments (S1, S2, . . . , Sn) on the basis of the measured forward voltages (Vf1, Vf2, . . . , Vfn) to achieve a desired illumination profile (P) for the segmented flash (10). The invention further describes a segmented flash system (1) comprising a segmented flash (10) with a plurality of flash segments (S1, S2, . . . , Sn), wherein each flash segment (S1, S2, . . . , Sn) is arranged to illuminate a portion (20) of a scene (2); and a flash driver (11) adapted to perform the steps of the inventive method to adjust the brightness of the flash segments (S1, S2, . . . , Sn).Type: GrantFiled: June 16, 2021Date of Patent: September 27, 2022Assignee: Lumileds LLCInventor: Henk Derks
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Publication number: 20210311373Abstract: The invention describes a method of controlling a segmented flash (10) having a plurality of flash segments (S1, S2, . . . , Sn), which method comprises the steps of measuring the forward voltages (Vf1, Vf2, . . . , Vfn) of the flash segments (S1, S2, . . . , Sn); and adjusting the brightness of the flash segments (S1, S2, . . . , Sn) on the basis of the measured forward voltages (Vf1, Vf2, . . . , Vfn) to achieve a desired illumination profile (P) for the segmented flash (10). The invention further describes a segmented flash system (1) comprising a segmented flash (10) with a plurality of flash segments (S1, S2, . . . , Sn), wherein each flash segment (S1, S2, . . . , Sn) is arranged to illuminate a portion (20) of a scene (2); and a flash driver (11) adapted to perform the steps of the inventive method to adjust the brightness of the flash segments (S1, S2, . . . , Sn).Type: ApplicationFiled: June 16, 2021Publication date: October 7, 2021Inventor: Henk Derks
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Patent number: 11064582Abstract: Systems, methods and devices are descried. A method of controlling a segmented flash having a plurality of flash segments each arranged to illuminate a portion of the scene includes determining an amount of light for illuminating each portion of the scene, measuring forward voltages of each of the flash segments, and adjusting a brightness of each of the flash segments to the determined amount of light for illuminating each portion of the scene. The adjusting is performed by at least one of adjusting a magnitude of a drive current to each of the flash segments, adjusting a duty cycle of the drive current to each of the flash segments, or scheduling a dummy flash, based at least in part on the measured forward voltages.Type: GrantFiled: July 10, 2018Date of Patent: July 13, 2021Assignee: Lumileds LLCInventor: Henk Derks
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Patent number: 11051382Abstract: The invention describes a driver (1) of an array (2) of current-driven LEDs (20), comprising a voltage converter (10) arranged to generate a supply voltage (Vboost) to the LED array (2) and to adjust the supply voltage (Vboost) in response to a feedback signal (100); a number of current sources (CS1, . . . , CSn) arranged to drive the LEDs (20) of the LED array (2); and a monitoring arrangement (M) adapted to monitor a current source voltage (Vcs1, . . . , Vcsn) relative to a voltage headroom (H) and to generate the feedback signal (100) on the basis of the headroom monitoring results. The invention further describes a device (4) comprising an LED array (2) and an embodiment of the inventive driver (1). The invention further describes method of driving an LED array (2).Type: GrantFiled: October 31, 2018Date of Patent: June 29, 2021Assignee: Lumileds LLCInventor: Henk Derks
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Publication number: 20210195705Abstract: Systems, methods and devices are descried. A method of controlling a segmented flash having a plurality of flash segments each arranged to illuminate a portion of the scene includes determining an amount of light for illuminating each portion of the scene, measuring forward voltages of each of the flash segments, and adjusting a brightness of each of the flash segments to the determined amount of light for illuminating each portion of the scene. The adjusting is performed by at least one of adjusting a magnitude of a drive current to each of the flash segments, adjusting a duty cycle of the drive current to each of the flash segments, or scheduling a dummy flash, based at least in part on the measured forward voltages.Type: ApplicationFiled: July 10, 2018Publication date: June 24, 2021Applicant: LUMILEDS LLCInventor: Henk DERKS
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Publication number: 20200281061Abstract: The invention describes a driver (1) of an array (2) of current-driven LEDs (20), comprising a voltage converter (10) arranged to generate a supply voltage (Vboost) to the LED array (2) and to adjust the supply voltage (Vboost) in response to a feedback signal (100); a number of current sources (CS1, . . . , CSn) arranged to drive the LEDs (20) of the LED array (2); and a monitoring arrangement (M) adapted to monitor a current source voltage (Vcs1, . . . , Vcsn) relative to a voltage headroom (H) and to generate the feedback signal (100) on the basis of the headroom monitoring results. The invention further describes a device (4) comprising an LED array (2) and an embodiment of the inventive driver (1). The invention further describes method of driving an LED array (2).Type: ApplicationFiled: October 31, 2018Publication date: September 3, 2020Inventor: Henk Derks
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Publication number: 20190363727Abstract: The present invention relates to an analog-to-digital converter and electronic device comprising the same. According to the invention, the ADC comprises a comparator comprising a first input for receiving an input signal and a second input for receiving a feedback signal, the comparator being configured to output a comparison signal in dependence of a difference between the input signal and the feedback signal. The ADC further comprises a triggered pulse generator configured for outputting a digital pulse signal, the pulse generator being configured to generate a pulse in said digital pulse signal in dependence of a clock signal when the comparison signal exceeds a first threshold. The ADC also comprises a digital-to-analog converter (DAC) for converting the digital pulse signal into an analog signal, and a low-pass filter for filtering the analog signal and for providing the filtered analog signal to the comparator as the feedback signal.Type: ApplicationFiled: February 24, 2017Publication date: November 28, 2019Inventor: Henk Derks
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Patent number: 10057507Abstract: The present invention is related to an image sensor and to a method for operating such sensor. The sensor of the invention comprises a pair of butted sensor tiles, each sensor tile comprising a pixel array comprising a plurality of rows and columns of photosensitive pixels. By constructing first row groups using at least one imaginary row, a different center-to-center distance exists between the different row groups than that which is obtained in prior art devices. More in particular, the construction according to the present invention allows the center positions of the rows to lie on a regular grid thereby lowering the geometrical distortion of the resulting image.Type: GrantFiled: April 22, 2015Date of Patent: August 21, 2018Assignee: TELEDYNE DALSA B.V.Inventor: Henk Derks
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Publication number: 20180146143Abstract: The present invention is related to an image sensor and to a method for operating such sensor. The sensor of the invention comprises a pair of butted sensor tiles, each sensor tile comprising a pixel array comprising a plurality of rows and columns of photosensitive pixels. By constructing first row groups using at least one imaginary row, a different center-to-center distance exists between the different row groups than that which is obtained in prior art devices. More in particular, the construction according to the present invention allows the center positions of the rows to lie on a regular grid thereby lowering the geometrical distortion of the resulting image.Type: ApplicationFiled: April 22, 2015Publication date: May 24, 2018Inventor: Henk DERKS
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Patent number: 9457549Abstract: A method for forming an optical fiber array. A substrate having a first surface and an opposing second surface is provided. The substrate is provided with a plurality of apertures extending through the substrate from the first surface to the second surface. In addition, a plurality of fibers are provided. The fibers have fiber ends with a diameter smaller than the smallest diameter of the apertures. A first fiber is inserted in a first corresponding aperture, from the first surface side of the substrate, such that the fiber end is positioned in close proximity of the second surface. The inserted first fiber is bent in a predetermined direction such that the fiber abuts a side wall of the first aperture at a predetermined position. After the first fiber is bent, a second fiber is inserted in a second corresponding aperture, from the first surface side of the substrate, such that the fiber end is positioned in close proximity of the second surface.Type: GrantFiled: March 19, 2015Date of Patent: October 4, 2016Assignee: MAPPER LITHOGRAPHY IP B.V.Inventors: Guido De Boer, Ralph Van Melle, Teunis Van De Peut, Henk Derks, Frederik Matthias Spiegelhalder, Roy Josephus Stephanus Derks, Edwin Johannes Theodorus Smulders
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Patent number: 9287081Abstract: The invention relates to a charged-particle multi-beamlet lithography system for transferring a pattern onto the surface of a target. The system comprises a beam generator for generating a plurality of charged particle beamlets, a beamlet blanker array for patterning the beamlets in accordance with a pattern, and a projection system for projecting the patterned beamlets onto the target surface. The blanker array comprises a plurality of modulators and a plurality of light sensitive elements. The light sensitive elements are arranged to receive pattern data carrying light beams and to convert the light beams into electrical signals. The light sensitive elements are electrically connected to one or more modulators for providing the received pattern data. The blanker array is coupled to a fiber fixation substrate which accommodates end sections of a plurality of fibers for providing pattern data carrying light beams as an assembled group with a fixed connection.Type: GrantFiled: October 26, 2011Date of Patent: March 15, 2016Assignee: MAPPER LITHOGRAPHY IP B.V.Inventors: Ralph Van Melle, Teunis Van De Peut, Henk Derks
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Publication number: 20150190994Abstract: A method for forming an optical fiber array. A substrate having a first surface and an opposing second surface is provided. The substrate is provided with a plurality of apertures extending through the substrate from the first surface to the second surface. In addition, a plurality of fibers are provided. The fibers have fiber ends with a diameter smaller than the smallest diameter of the apertures. A first fiber is inserted in a first corresponding aperture, from the first surface side of the substrate, such that the fiber end is positioned in close proximity of the second surface. The inserted first fiber is bent in a predetermined direction such that the fiber abuts a side wall of the first aperture at a predetermined position. After the first fiber is bent, a second fiber is inserted in a second corresponding aperture, from the first surface side of the substrate, such that the fiber end is positioned in close proximity of the second surface.Type: ApplicationFiled: March 19, 2015Publication date: July 9, 2015Inventors: Guido DE BOER, Ralph VAN MELLE, Teunis VAN DE PEUT, Henk DERKS, Frederik Matthias SPIEGELHALDER, Roy Josephus Stephanus DERKS, Edwin Johannes Theodorus SMULDERS
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Patent number: 9036962Abstract: A method of forming an optical fiber array. The method comprises providing a substrate having a first surface and an opposing second surface. The substrate is provided with a plurality of apertures extending through the substrate from the first surface to the second surface. Additionally, a plurality of fibers is provided. The fibers have fiber ends with a diameter smaller than the smallest diameter of the apertures. For each fiber, from the first surface side of the substrate, the fiber is inserted in a corresponding aperture such that the fiber end is positioned in close proximity of the second surface. Then the fiber is bent in a predetermined direction such that the fiber abuts a side wall of the aperture at a predetermined position. Finally, the bent fibers are bonded together using an adhesive material.Type: GrantFiled: April 20, 2012Date of Patent: May 19, 2015Assignee: MAPPER LITHOGRAPHY IP B.V.Inventors: Guido De Boer, Ralph Van Melle, Teunis Van De Peut, Henk Derks, Frederik Matthias Spiegelhalder, Roy Josephus Stephanus Derks, Edwin Johannes Theodorus Smulders
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Patent number: 8921758Abstract: The invention relates to a charged-particle multi-beamlet lithography system. The system comprises a beam generator for generating a plurality of beamlets, a beamlet blanker array for patterning the plurality of beamlets, an optical fiber arrangement, and a projection system. The beamlet blanker array comprises a substrate provided with a first area comprising one or more modulators and a second area free of modulators. The beamlet blanker array comprises one or more light sensitive elements, electrically connected to the one or more modulators, and arranged to receive light beams carrying pattern data. The optical fiber arrangement comprises a plurality of optical fibers for guiding the light beams carrying pattern data towards the one or more light sensitive elements. The projection of the optical fiber arrangement onto a surface of the beamlet blanker array in a direction perpendicular to the surface falls entirely within the second area.Type: GrantFiled: October 26, 2011Date of Patent: December 30, 2014Assignee: Mapper Lithography IP B.V.Inventors: Marco Jan-Jaco Wieland, Teunis Van De Peut, Alexander Hendrik Vincent Van Veen, Remco Jager, Stijn Willem Herman Karel Steenbrink, Ralph Van Melle, Henk Derks
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Patent number: 8884255Abstract: A maskless charged particle lithography system comprises an electron-optical column and a data path. The column includes a blanker array including blanker elements. The data path comprises a preprocessing system, transmission channels, and a pattern streaming system. The lithography system is configured for exposing a target field in two passes by allocating a first beamlet subset for exposing a first field subset during a first pass and a second beamlet subset for exposing a second field subset during a second pass. A first beam selector selects a first pattern data subset containing exposure data for the first beamlet subset and a second pattern data subset containing exposure data for the second beamlet subset. Second beam selectors connect transmission channels assigned for transmitting the first pattern data subset to a first blanker elements subset, and transmission channels assigned for transmitting the second pattern data subset to a second blanker elements subset.Type: GrantFiled: November 7, 2011Date of Patent: November 11, 2014Assignee: Mapper Lithography IP B.V.Inventors: Henk Derks, Marco Jan-Jaco Wieland, Teunis Van De Peut
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Patent number: 8604411Abstract: The invention relates to a charged particle lithography system comprising a beam generator for generating a plurality of charged particle beamlets, a beam stop array and a modulation device. The beam stop array has a surface for blocking beamlets from reaching a target surface and an aperture array in the surface for allowing beamlets to reach the target surface. The modulation device is arranged for modulating the beamlets by deflecting or not deflecting the beamlets so that the beamlets are blocked or not blocked by the beam stop array. A surface area of the modulation device comprises an elongated beam area comprising an array of apertures and associated modulators, and a power interface area for accommodating a power arrangement for powering elements within the modulation device. The power interface area is located alongside a long side of the elongated beam area and extending in a direction substantially parallel thereto.Type: GrantFiled: November 14, 2011Date of Patent: December 10, 2013Assignee: Mapper Lithography IP B.V.Inventors: Marco Jan-Jaco Wieland, Remco Jager, Alexander Hendrik Vincent Van Veen, Stijn Willem Herman Karel Steenbrink, Teunis van de Peut, Henk Derks
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Publication number: 20130043413Abstract: A method of forming an optical fiber array. The method comprises providing a substrate having a first surface and an opposing second surface. The substrate is provided with a plurality of apertures extending through the substrate from the first surface to the second surface. Additionally, a plurality of fibers is provided. The fibers have fiber ends with a diameter smaller than the smallest diameter of the apertures. For each fiber, from the first surface side of the substrate, the fiber is inserted in a corresponding aperture such that the fiber end is positioned in close proximity of the second surface. Then the fiber is bent in a predetermined direction such that the fiber abuts a side wall of the aperture at a predetermined position. Finally, the bent fibers are bonded together using an adhesive material.Type: ApplicationFiled: April 20, 2012Publication date: February 21, 2013Applicant: MAPPER LITHOGRAPHY IP B.V.Inventors: Guido DE BOER, Ralph VAN MELLE, Teunis VAN DE PEUT, Henk DERKS, Frederik Matthias SPIEGELHALDER
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Patent number: RE48287Abstract: A method for forming an optical fiber array. A substrate having a first surface and an opposing second surface is provided. The substrate is provided with a plurality of apertures extending through the substrate from the first surface to the second surface. In addition, a plurality of fibers are provided. The fibers have fiber ends with a diameter smaller than the smallest diameter of the apertures. A first fiber is inserted in a first corresponding aperture, from the first surface side of the substrate, such that the fiber end is positioned in close proximity of the second surface. The inserted first fiber is bent in a predetermined direction such that the fiber abuts a side wall of the first aperture at a predetermined position. After the first fiber is bent, a second fiber is inserted in a second corresponding aperture, from the first surface side of the substrate, such that the fiber end is positioned in close proximity of the second surface.Type: GrantFiled: October 3, 2018Date of Patent: October 27, 2020Assignee: ASML Netherlands B.V.Inventors: Guido De Boer, Ralph Van Melle, Teunis Van De Peut, Henk Derks, Frederik Matthias Spiegelhalder, Roy Josephus Stephanus Derks, Edwin Johannes Theodorus Smulders