Patents by Inventor Raveen Kumaran
Raveen Kumaran 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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Publication number: 20240080416Abstract: Example embodiments provide systems and methods for correcting non-uniformities of a light beam generated by a multi-emitter light source. In some embodiments a phase modulator displays patch lenses to correct for the non-uniformities. In some embodiments each region of the phase modulator is illuminated by a beam generated by one emitter of the multi-emitter light source. Such region of the phase modulator may display a patch lens for correcting non-uniformities in the corresponding beam which illuminates the region.Type: ApplicationFiled: August 3, 2023Publication date: March 7, 2024Inventors: Samuel MELAMED, Martin Gregory BECKETT, Raveen KUMARAN, Weicheng YAN
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Publication number: 20240042691Abstract: Apparatus for additive manufacturing includes a light source that emits light into an optical path that extends to a powder bed or other platform for additive manufacturing. A phase modulator in the optical path is controlled to present a 2D pattern of phase shifts that steer the light to provide a desired pattern of optical power density on the powder bed. In some embodiments the optical path includes elements that focus the light into a small spot on the powder bed and a scanner operative to scan the spot over the powder bed. In some embodiments the light from the optical path is distributed over an area of the powder bed. A pattern of optical power density within the spot or area may be altered by changing the data controlling the phase modulator.Type: ApplicationFiled: October 20, 2023Publication date: February 8, 2024Inventors: Sam BULS, Andra ST QUINTIN, Raveen KUMARAN
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Publication number: 20230375906Abstract: Optical assemblies comprise plural spatial light modulators arranged to modulate light in plural light beams. The modulated light is combined in angular space by converging light beams onto a target area of an image plane. Light from the image plane may be received at an entrance pupil of an optical system. A diffuser may be provided to increase utilization of an acceptance angle of the optical system. The optical system may comprise an image projection system comprising an imager that is illuminated by the light from the image plane. An example application of the described technology is cinema projection of scenes which include high luminance highlights.Type: ApplicationFiled: October 1, 2021Publication date: November 23, 2023Inventors: Dries Jan DOORNAERT, Bart Henri Johanna MAXIMUS, Raveen KUMARAN, Dirk Leontina MAES
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Publication number: 20230188684Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: ApplicationFiled: December 15, 2022Publication date: June 15, 2023Inventors: Gerwin DAMBERG, Eric Jan KOZAK, Raveen KUMARAN, Anders BALLESTAD
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Publication number: 20230027499Abstract: Light projection systems and methods may comprise combining light from two or more projectors. Each projector may be controlled so that the combined light output of the projectors matches a target for the projected light. In some embodiments optimization is performed to generate image data and control signals for each of the projectors. Embodiments may be applied in image projecting applications, lighting applications, and 3D stereoscopic imaging.Type: ApplicationFiled: June 13, 2022Publication date: January 26, 2023Inventors: Eric Kozak, Gerwin Damberg, Anders Ballestad, Raveen Kumaran, James Gregson, Johannes Minor, Gil Rosenfeld
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Patent number: 11558588Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: GrantFiled: April 30, 2021Date of Patent: January 17, 2023Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, Eric Jan Kozak, Raveen Kumaran, Anders Ballestad
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Patent number: 11363242Abstract: Light projection systems and methods may comprise combining light from two or more projectors, Each projector may be controlled so that the combined light output of the projectors matches a target for the projected light. In some embodiments optimization is performed to generate image data and control signals for each of the projectors. Embodiments may be applied in image projecting applications, lighting applications, and 3D stereoscopic imaging.Type: GrantFiled: December 20, 2018Date of Patent: June 14, 2022Assignee: MTT Innovation IncorporatedInventors: Eric Kozak, Gerwin Damberg, Anders Ballestad, Raveen Kumaran, James Gregson, Johannes Minor, Gil Rosenfeld
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Publication number: 20210258546Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: ApplicationFiled: April 30, 2021Publication date: August 19, 2021Inventors: Gerwin DAMBERG, Eric Jan KOZAK, Raveen KUMARAN, Anders BALLESTAD
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Publication number: 20210254797Abstract: A light source includes a plurality of laser diodes or other light emitters. Beams of light from the light emitters are steered to provide n array of parallel beams that illuminate a target area with an array of patches of light. In some embodiments the parallel beams are de-magnified to form the array of patches of light. Such a light source has application in illuminating dynamically-addressable focusing elements such as phase modulators, deformable mirrors and dynamically addressable lenses. Light projectors for a wide variety of applications may combine a light source as described herein with a dynamically-addressable focusing element to project defined patterns of light.Type: ApplicationFiled: February 25, 2021Publication date: August 19, 2021Inventors: Johannes MINOR, Gerwin DAMBERG, Raveen KUMARAN, Anders BALLESTAD, Eric Jan KOZAK, Gil ROSENFELD, Eran ELIZUR
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Patent number: 11032525Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: GrantFiled: September 27, 2019Date of Patent: June 8, 2021Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, Eric Jan Kozak, Raveen Kumaran, Anders Ballestad
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Patent number: 11019311Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: GrantFiled: February 24, 2020Date of Patent: May 25, 2021Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, Eric Jan Kozak, Raveen Kumaran, Anders Ballestad
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Patent number: 10942428Abstract: A free-form lens (for example a phase modulator, lens or deformable mirror) may be made to reproduce a light pattern specified by image data. Source regions on the free-form lens are mapped to target regions areas on an image. Areas of the source regions are adjusted to vary the amount of light delivered to each of the target regions. Adjustment of the source areas may be achieved using a L-BFGS optimization which preferably incorporates smoothness and curl regularizers. Embodiments apply parallel processing to obtain control values for a free form lens in real time or near real time. Apparatus may process image data and display an image by controlling a dynamically variable free form lens using the processed image data.Type: GrantFiled: June 17, 2019Date of Patent: March 9, 2021Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, Anders Ballestad, Raveen Kumaran, James Gregson
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Publication number: 20200195896Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: ApplicationFiled: February 24, 2020Publication date: June 18, 2020Inventors: Gerwin DAMBERG, Eric Jan KOZAK, Raveen KUMARAN, Anders BALLESTAD
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Publication number: 20200106997Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: ApplicationFiled: September 27, 2019Publication date: April 2, 2020Inventors: Gerwin DAMBERG, Eric Jan KOZAK, Raveen KUMARAN, Anders BALLESTAD
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Patent number: 10602100Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: GrantFiled: August 21, 2018Date of Patent: March 24, 2020Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, Eric Jan Kozak, Raveen Kumaran, Anders Ballestad
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Publication number: 20200088358Abstract: A light source includes a plurality of laser diodes or other light emitters. Beams of light from the light emitters are steered to provide n array of parallel beams that illuminate a target area with an array of patches of light. In some embodiments the parallel beams are de-magnified to form the array of patches of light. Such a light source has application in illuminating dynamically-addressable focusing elements such as phase modulators, deformable mirrors and dynamically addressable lenses. Light projectors for a wide variety of applications may combine a light source as described herein with a dynamically-addressable focusing element to project defined patterns of light.Type: ApplicationFiled: August 23, 2019Publication date: March 19, 2020Inventors: Johannes MINOR, Gerwin DAMBERG, Raveen KUMARAN, Anders BALLESTAD, Eric Jan KOZAK, Gil ROSENFELD, Eran ELIZUR
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Publication number: 20190369467Abstract: A free-form lens (for example a phase modulator, lens or deformable mirror) may be made to reproduce a light pattern specified by image data. Source regions on the free-form lens are mapped to target regions areas on an image. Areas of the source regions are adjusted to vary the amount of light delivered to each of the target regions. Adjustment of the source areas may be achieved using a L-BFGS optimization which preferably incorporates smoothness and curl regularizers. Embodiments apply parallel processing to obtain control values for a free form lens in real time or near real time. Apparatus may process image data and display an image by controlling a dynamically variable free form lens using the processed image data.Type: ApplicationFiled: June 17, 2019Publication date: December 5, 2019Inventors: Gerwin DAMBERG, Anders BALLESTAD, Raveen KUMARAN, James GREGSON
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Patent number: 10469808Abstract: Image display apparatus and methods may use a single imaging element such as a digital mirror device (DMD) to spatially modulate plural color channels. A color channel may include a light steering element such as a phase modulator. Steered light from a light steering element may be combined with or replaced by additional light to better display bright images. These technologies may be provided together or applied individually.Type: GrantFiled: October 3, 2017Date of Patent: November 5, 2019Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, Eric Jan Kozak, Raveen Kumaran, Anders Ballestad
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Patent number: 10408390Abstract: A light source includes a plurality of laser diodes or other light emitters. Beams of light from the light emitters are steered to provide n array of parallel beams that illuminate a target area with an array of patches of light. In some embodiments the parallel beams are de-magnified to form the array of patches of light. Such a light source has application in illuminating dynamically-addressable focusing elements such as phase modulators, deformable mirrors and dynamically addressable lenses. Light projectors for a wide variety of applications may combine a light source as described herein with a dynamically-addressable focusing element to project defined patterns of light.Type: GrantFiled: January 5, 2018Date of Patent: September 10, 2019Assignee: MTT Innovation IncorporatedInventors: Johannes Minor, Gerwin Damberg, Raveen Kumaran, Anders Ballestad, Eric Jan Kozak, Gil Rosenfeld, Eran Elizur
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Patent number: 10324361Abstract: A free-form lens (for example a phase modulator, lens or deformable mirror) may be made to reproduce a light pattern specified by image data. Source regions on the free-form lens are mapped to target regions areas on an image. Areas of the source regions are adjusted to vary the amount of light delivered to each of the target regions. Adjustment of the source areas may be achieved using a L-BFGS optimization which preferably incorporates smoothness and curl regularizers. Embodiments apply parallel processing to obtain control values for a free form lens in real time or near real time. Apparatus may process image data and display an image by controlling a dynamically variable free form lens using the processed image data.Type: GrantFiled: February 8, 2018Date of Patent: June 18, 2019Assignee: MTT Innovation IncorporatedInventors: Gerwin Damberg, Anders Ballestad, Raveen Kumaran, James Gregson