Patents by Inventor Duane Scott Dewald
Duane Scott Dewald 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: 8891087Abstract: A system and method for visualizing a biological sample. One or more spectra are selected for illuminating the biological sample to indicate one or more chemicals in the biological sample. The biological sample is illuminated with the one or more spectra. Reflected light is analyzed to determine characteristics of the biological sample.Type: GrantFiled: June 8, 2012Date of Patent: November 18, 2014Assignee: Digital Light InnovationsInventors: Karel J. Zuzak, William Boyd Werner, Duane Scott Dewald, Brian Crowell
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Patent number: 8792098Abstract: A system and method for a hyperspectral illuminator. The hyperspectral illuminator includes an LED array for generating light of a predefined spectra. The hyperspectral illuminator further includes multiple collimators. Each of the multiple collimators is associated with one an LED of the LED array and focus the light into beams. The hyperspectral illuminator further includes multiple dichroic filters. The dichroic filters filter the beams. The hyperspectral illuminator further includes one or more integrator lenses for mixing the filtered beams into a uniform pattern for projection on to a target.Type: GrantFiled: June 1, 2012Date of Patent: July 29, 2014Assignee: Digital Light InnovationsInventors: Duane Scott Dewald, Karel J. Zuzak, William Boyd Werner
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Patent number: 8541860Abstract: Device and method for an antireflective coating to improve image quality in an image display system. A preferred embodiment comprises a first high refractive index layer overlying a reflective surface of an integrated circuit, a first low refractive index layer overlying the first high refractive index layer, a second high refractive index layer overlying the first low refractive index layer, and a second low refractive index layer overlying the second high refractive index layer. The alternating layers of high refractive index material and low refractive index material form an optical trap, allowing light to readily pass through in one direction, but not so easily in a reverse direction. The dual alternating layer topology improves the antireflective properties of the antireflective layer and permits a wide range of adjustments for manipulating reflectivity and color point.Type: GrantFiled: August 9, 2011Date of Patent: September 24, 2013Assignee: Texas Instruments IncorporatedInventors: Simon Joshua Jacobs, Duane Scott Dewald, Leigh A. Files, Terry A. Bartlett
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Publication number: 20120307056Abstract: A system and method for visualizing a biological sample. One or more spectra are selected for illuminating the biological sample to indicate one or more chemicals in the biological sample. The biological sample is illuminated with the one or more spectra. Reflected light is analyzed to determine characteristics of the biological sample.Type: ApplicationFiled: June 8, 2012Publication date: December 6, 2012Inventors: Karel J. Zuzak, Duane Scott Dewald, William Boyd Werner, Brian Crowell
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Publication number: 20120307081Abstract: A system and method for a hyperspectral illuminator. The hyperspectral illuminator includes an LED array for generating light of a predefined spectra. The hyperspectral illuminator further includes multiple collimators. Each of the multiple collimators is associated with one an LED of the LED array and focus the light into beams. The hyperspectral illuminator further includes multiple dichroic filters. The dichroic filters filter the beams. The hyperspectral illuminator further includes one or more integrator lenses for mixing the filtered beams into a uniform pattern for projection on to a target.Type: ApplicationFiled: June 1, 2012Publication date: December 6, 2012Inventors: Duane Scott Dewald, Karel J. Zuzak, William Boyd Werner
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Patent number: 8208759Abstract: An image system comprises a light valve and an image capturing unit. The light valve comprises an array of individually addressable pixels capable of generating an image. The image capturing unit comprises a detector having an array of detector pixels capable of capturing images. The detector pixels are correlated with the light valve pixels.Type: GrantFiled: December 14, 2007Date of Patent: June 26, 2012Assignee: Texas Instruments IncorporatedInventors: Roger S. Carver, Leigh Ann Files, Duane Scott Dewald, Walter M. Duncan
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Publication number: 20110294305Abstract: Device and method for an antireflective coating to improve image quality in an image display system. A preferred embodiment comprises a first high refractive index layer overlying a reflective surface of an integrated circuit, a first low refractive index layer overlying the first high refractive index layer, a second high refractive index layer overlying the first low refractive index layer, and a second low refractive index layer overlying the second high refractive index layer. The alternating layers of high refractive index material and low refractive index material form an optical trap, allowing light to readily pass through in one direction, but not so easily in a reverse direction. The dual alternating layer topology improves the antireflective properties of the antireflective layer and permits a wide range of adjustments for manipulating reflectivity and color point.Type: ApplicationFiled: August 9, 2011Publication date: December 1, 2011Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Simon Joshua Jacobs, Duane Scott Dewald, Leigh A. Files, Terry A. Bartlett
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Patent number: 8047660Abstract: A method and apparatus for a projection display system includes a spatial light modulator and a volume illumination hologram. The spatial light modulator comprises a digital micromirror device, and the projection system includes a laser light source to produce a sequence of collimated, colored, light beams for the illumination hologram. Waste light produced by the spatial light modulator is transmitted to the illumination hologram, and the illumination hologram emits waste light from at least one of its edges. Waste light emitted from an edge of the illumination hologram is absorbed by a light sensor to control the intensity of the light beams. A projection focusing element is mounted proximate a side of the illumination hologram to focus the image beam from the spatial light modulator for viewing. A projection hologram is interposed between the side of the illumination hologram and the projection focusing element to manage waste light.Type: GrantFiled: January 13, 2010Date of Patent: November 1, 2011Assignee: Texas Instruments IncorporatedInventors: Steven Monroe Penn, Duane Scott Dewald, Ronald Allen Barry
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Patent number: 7994600Abstract: Device and method for an antireflective coating to improve image quality in an image display system. A preferred embodiment comprises a first high refractive index layer overlying a reflective surface of an integrated circuit, a first low refractive index layer overlying the first high refractive index layer, a second high refractive index layer overlying the first low refractive index layer, and a second low refractive index layer overlying the second high refractive index layer. The alternating layers of high refractive index material and low refractive index material form an optical trap, allowing light to readily pass through in one direction, but not so easily in a reverse direction. The dual alternating layer topology improves the antireflective properties of the antireflective layer and permits a wide range of adjustments for manipulating reflectivity and color point.Type: GrantFiled: December 21, 2005Date of Patent: August 9, 2011Assignee: Texas Instruments IncorporatedInventors: Simon Joshua Jacobs, Duane Scott Dewald, Leigh A. Files, Terry A. Bartlett
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Patent number: 7883219Abstract: System and method for thin projection display systems. An embodiment comprises a light source, an array of light modulators optically coupled to the light source, a lensed mirror optically coupled to the array, and a controller electronically coupled to the array and to the light source. The array produces images on a display plane by modulating light from the light source based on image data and the controller provides light commands to the light source and load image data into the array. The lensed mirror reflects modulated light from the array onto the display plane, the lensed mirror comprising a refractive portion and a reflective portion. The refractive portion of the lensed mirror helps to increase the light bending capability to help reduce the overall thickness of a projection display system.Type: GrantFiled: December 27, 2006Date of Patent: February 8, 2011Assignee: Texas Instruments IncorporatedInventors: John David Jackson, Steven Edward Smith, Duane Scott Dewald
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Publication number: 20100110516Abstract: A method and apparatus for a projection display system includes a spatial light modulator and a volume illumination hologram. The spatial light modulator comprises a digital micromirror device, and the projection system includes a laser light source to produce a sequence of collimated, colored, light beams for the illumination hologram. Waste light produced by the spatial light modulator is transmitted to the illumination hologram, and the illumination hologram emits waste light from at least one of its edges. Waste light emitted from an edge of the illumination hologram is absorbed by a light sensor to control the intensity of the light beams. A projection focusing element is mounted proximate a side of the illumination hologram to focus the image beam from the spatial light modulator for viewing. A projection hologram is interposed between the side of the illumination hologram and the projection focusing element to manage waste light.Type: ApplicationFiled: January 13, 2010Publication date: May 6, 2010Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Steven Monroe Penn, Duane Scott Dewald, Ronald Allen Barry
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Publication number: 20100026962Abstract: An optical element for compensating for aberrations in a projected image resulting from an air gap between adjacent segments of a separation prism includes a first surface and a second surface opposite said first surface. Each of the first and second surface define a portion of a cylinder having a radius and a cylindrical axis. The optical element is disposed between the separation prism and the projected image. A thickness of the optical element and the radius of the cylinder are selected to correspond to the aberration to be compensated and the cylindrical axis is oriented to correspond to the aberration to be compensated.Type: ApplicationFiled: July 30, 2008Publication date: February 4, 2010Inventor: Duane Scott Dewald
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Patent number: 7651227Abstract: A method and apparatus for a projection display system includes a spatial light modulator and a volume illumination hologram. The spatial light modulator comprises a digital micromirror device, and the projection system includes a laser light source to produce a sequence of collimated, colored, light beams for the illumination hologram. Waste light produced by the spatial light modulator is transmitted to the illumination hologram, and the illumination hologram emits waste light from at least one of its edges. Waste light emitted from an edge of the illumination hologram is absorbed by a light sensor to control the intensity of the light beams. A projection focusing element is mounted proximate a side of the illumination hologram to focus the image beam from the spatial light modulator for viewing. A projection hologram is interposed between the side of the illumination hologram and the projection focusing element to manage waste light.Type: GrantFiled: September 13, 2005Date of Patent: January 26, 2010Assignee: Texas Instruments IncorporatedInventors: Steven Monroe Penn, Duane Scott Dewald, Ronald Allen Barry
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Patent number: 7537347Abstract: A method and system for combining light emitted by dispersed light sources for use in a projection display or similar system. A plurality of elongated and tapered light integrators are placed side by side forming an array, each having at their small input end a light source, such as an LED. Light collimated by each light integrator is further collimated by a convex lens disposed immediately at the output end of the light integrator. From the convex lenses, the light falls upon an array integrator, preferably a fly-eye type integrator, and passes through it to a second array integrator. Light emerging from the second array integrator is then passed through one or more relay lenses and falls upon a light modulator, such as a digital mircomirror device (DMD). The modulated light beam then passes through a projection lens and onto a visual image display screen. The display screen may, for example, be the screen of a high definition television (HDTV).Type: GrantFiled: November 29, 2005Date of Patent: May 26, 2009Assignee: Texas Instruments IncorporatedInventor: Duane Scott Dewald
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Patent number: 7532259Abstract: A method of processing light includes receiving an image to be displayed. The image has a brightness level. The method further includes generating light from a light source and intensity-modulating the generated light to produce light having a first intensity. The first intensity is a function of the brightness level. The method also includes spatially integrating the intensity-modulated light.Type: GrantFiled: August 22, 2006Date of Patent: May 12, 2009Assignee: Texas Instruments IncorporatedInventors: Michael Terry Davis, Duane Scott Dewald, Steve Smith
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Publication number: 20090060301Abstract: An image system comprises a light valve and an image capturing unit. The light valve comprises an array of individually addressable pixels capable of generating an image. The image capturing unit comprises a detector having an array of detector pixels capable of capturing images. The detector pixels are correlated with the light valve pixels.Type: ApplicationFiled: December 14, 2007Publication date: March 5, 2009Applicant: Texas Instruments IncorporatedInventors: Roger S. Carver, Leigh Ann Files, Duane Scott Dewald, Walter M. Duncan
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Publication number: 20080158523Abstract: System and method for thin projection display systems. An embodiment comprises a light source, an array of light modulators optically coupled to the light source, a lensed mirror optically coupled to the array, and a controller electronically coupled to the array and to the light source. The array produces images on a display plane by modulating light from the light source based on image data and the controller provides light commands to the light source and load image data into the array. The lensed mirror reflects modulated light from the array onto the display plane, the lensed mirror comprising a refractive portion and a reflective portion. The refractive portion of the lensed mirror helps to increase the light bending capability to help reduce the overall thickness of a projection display system.Type: ApplicationFiled: December 27, 2006Publication date: July 3, 2008Inventors: John David Jackson, Steven Edward Smith, Duane Scott Dewald
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Publication number: 20080143971Abstract: System and method for collecting and homogenizing light from large etendue light sources for use in projection display systems. An embodiment comprises a light source, an integrating lens optically coupled to the light source, and an auxiliary lens optically coupled to the light source and positioned in a light path of an illumination system after the light source. The integrating lens condenses light provided by the light source and the auxiliary lens focuses light incident on an outer periphery of the auxiliary lens towards an optical axis of the illumination system and passes light incident on an optical center portion of the auxiliary lens substantially unaffected. The auxiliary lens redirects light striking its periphery back towards the optical axis of the illumination system, thereby increasing the amount of usable light.Type: ApplicationFiled: December 19, 2006Publication date: June 19, 2008Inventor: Duane Scott Dewald
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Patent number: 7385747Abstract: A system and method for the modulation of light propagating along an optical path, for example the optical path in a projection display system. As light in the optical path travels from a light source to a display screen, it is shaped and modulated by the various components of the optical path so that the intended visual image appears on the display screen. In accordance with the present invention, a mirror disposed proximate the optical path is operable to be selectively inserted and removed from the optical path to alternately direct the light from one portion of the optical path to another, or to a light dump where it can be absorbed such that the associated heat energy may be properly dissipated. In a preferred embodiment, the mirror is a fold mirror mounted at a stop of the system to fold the light beam approximately 90 degrees when the mirror is inserted in the optical path.Type: GrantFiled: December 1, 2005Date of Patent: June 10, 2008Assignee: Texas Instruments IncorporatedInventors: Duane Scott Dewald, Michael T. Davis, Bryce Daniel Sawyers
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Publication number: 20080062546Abstract: A method of processing light includes receiving an image to be displayed. The image has a brightness level. The method further includes generating light from a light source and intensity-modulating the generated light to produce light having a first intensity. The first intensity is a function of the brightness level. The method also includes spatially integrating the intensity-modulated light.Type: ApplicationFiled: August 22, 2006Publication date: March 13, 2008Inventors: Michael Terry Davis, Duane Scott Dewald, Steve Smith