Patents by Inventor Gregory Scott Pettitt
Gregory Scott Pettitt 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).
-
Publication number: 20230388460Abstract: A system includes a color filter including a first segment configured to transmit first light having a first color and to reflect second light having a second color and a second segment configured to transmit the second light having the second color and to reflect the first light having the first color. The system also includes an integrator rod optically coupled to the color filter, a reflective surface having an aperture on an end of the integrator rod.Type: ApplicationFiled: August 11, 2023Publication date: November 30, 2023Inventors: Kristofer Scott OBERASCHER, Gregory Scott PETTITT, Jeffrey Matthew KEMPF, Michael Terry DAVIS, Xi ZHOU
-
Patent number: 11765325Abstract: A system having a color filter having first and second segments. The first and second segments allow respective first and second wavelengths to pass through to a spatial light modulator. The first and second segments also reflect second and first wavelengths, respectively. The reflected first and second wavelengths are recycled and directed towards the color filter.Type: GrantFiled: October 30, 2020Date of Patent: September 19, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Kristofer Scott Oberascher, Gregory Scott Pettitt, Jeffrey Matthew Kempf, Michael Terry Davis, Xi Zhou
-
Publication number: 20210136333Abstract: A system having a color filter having first and second segments. The first and second segments allow respective first and second wavelengths to pass through to a spatial light modulator. The first and second segments also reflect second and first wavelengths, respectively. The reflected first and second wavelengths are recycled and directed towards the color filter.Type: ApplicationFiled: October 30, 2020Publication date: May 6, 2021Inventors: Kristofer Scott OBERASCHER, Gregory Scott PETTITT, Jeffrey Matthew KEMPF, Michael Terry DAVIS, Xi ZHOU
-
Patent number: 10785459Abstract: In described examples, a digital light processing color projector includes light emitters configured to collectively emit light at multiple wavelengths, multiple light directing elements forming an illumination path having at least one aperture stop, a micromirror array coupled to a substrate, an aperture located at the aperture stop, and a filter with a selected color transmittance profile located at or near the aperture stop. The light directing elements are configured to direct light towards the micromirror array as illumination light. An aperture width determines a diameter of the illumination light. A micromirror on-state reflects the illumination light as on-state light. The substrate reflects the illumination light as flat-state light. The light directing elements direct on-state light through the aperture to a projector output. The filter filters flat-state light in an overlap region of the on-state light and flat-state light, or an illumination light portion corresponding to overlap region.Type: GrantFiled: December 28, 2018Date of Patent: September 22, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Zhongyan Sheng, Gregory Scott Pettitt
-
Publication number: 20190230326Abstract: In described examples, a digital light processing color projector includes light emitters configured to collectively emit light at multiple wavelengths, multiple light directing elements forming an illumination path having at least one aperture stop, a micromirror array coupled to a substrate, an aperture located at the aperture stop, and a filter with a selected color transmittance profile located at or near the aperture stop. The light directing elements are configured to direct light towards the micromirror array as illumination light. An aperture width determines a diameter of the illumination light. A micromirror on-state reflects the illumination light as on-state light. The substrate reflects the illumination light as flat-state light. The light directing elements direct on-state light through the aperture to a projector output. The filter filters flat-state light in an overlap region of the on-state light and flat-state light, or an illumination light portion corresponding to overlap region.Type: ApplicationFiled: December 28, 2018Publication date: July 25, 2019Inventors: Zhongyan Sheng, Gregory Scott Pettitt
-
Patent number: 10230928Abstract: An image may be formed in a projection system by forming a light beam with substantially a first polarization. The light beam is directed onto a first color wheel that transmits a first selected color portion of the light beam and reflects a second color portion of the light beam. The reflected second color portion is converted to a second polarization. A first portion of the image is produced with a first spatial light modulator using the first selected color portion of the light beam having the first polarization. A second portion of the image is produced with a second spatial light modulator using at least a portion of the reflected second color portion of the light beam having the second polarization. The first portion of the image and the second portion of the image are combined to form a combined image for projection.Type: GrantFiled: October 23, 2015Date of Patent: March 12, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Alexander Lyubarsky, Gregory Scott Pettitt
-
Patent number: 10070106Abstract: In described examples, a method of creating multiple light images uses spatially-separated light sources, arranged in an array, operated in multiplexed fashion, for driving a spatial light modulator. Each of the light sources is time-sequenced to direct light at the spatial light modulator during a time interval. The spatial light modulator is synchronized with the light sources and controlled to produce a desired image during each time interval. The resulting images are received by an optical lens system to provide light images along an image plane. Alternately, the optical lens system focuses the modulated light images on a hogel plane to produce a light field. The pixel count of the spatial light modulator is effectively multiplied by the number of light sources.Type: GrantFiled: June 17, 2016Date of Patent: September 4, 2018Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: John Marshall Ferri, Gregory Scott Pettitt
-
Patent number: 9664892Abstract: Apparatus and methods are disclosed for generating blue color illumination for use in a projection system. Light from a blue laser light source is reflected off a dichroic filter sequentially onto different color emitting phosphor coated light non-transmissive segments and onto a cyan color emitting phosphor coated light transmissive segment of a rotating color wheel. The different color light and cyan color light emitted by the phosphor back to the filter is selectively transmitted by the filter along a projection path. Blue laser light and cyan color light emitted by the phosphor transmitted through the color wheel is directed along a wraparound optical path back to the filter for reflection along the projection optical path.Type: GrantFiled: January 14, 2014Date of Patent: May 30, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Philip Scott King, Gregory Scott Pettitt, Sajjad Ali Khan
-
Publication number: 20160373701Abstract: In described examples, a method of creating multiple light images uses spatially-separated light sources, arranged in an array, operated in multiplexed fashion, for driving a spatial light modulator. Each of the light sources is time-sequenced to direct light at the spatial light modulator during a predetermined time interval. The spatial light modulator is synchronized with the light sources and controlled to produce a desired image during each time interval. The resulting images are received by an optical lens system to provide light images along an image plane. Alternately, the optical lens system focuses the modulated light images on a hogel plane to produce a light field. The pixel count of the spatial light modulator is effectively multiplied by the number of light sources. Each light source may sequentially provide multiple colors to produce a full-color image. The light source array may, in turn, be driven by one or more remotely-located master light sources.Type: ApplicationFiled: June 17, 2016Publication date: December 22, 2016Inventors: John Marshall Ferri, Gregory Scott Pettitt
-
Patent number: 9344696Abstract: A system for displaying a high resolution video image utilizing multiple spatial light modulators includes at least one illumination source configured to provide illumination to multiple spatial light modulators; a video data image processor coupled to receive video image data at a first visual resolution of X by Y pixels; and multiple spatial light modulators each having an image resolution lower than the first visual resolution, each configured to project an image sub-frame onto a focal plane using an image projection system; wherein the image projection system is configured to project a first sub-frame image of a first color portion while simultaneously projecting at least a second sub-frame image of a second color portion onto the focal plane, and the first and second sub-frame images are offset from one another, so that when viewed together a viewed image has at least the first visual resolution. Methods are disclosed.Type: GrantFiled: July 24, 2015Date of Patent: May 17, 2016Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Jeffrey Matthew Kempf, Gregory Scott Pettitt, Michael Terry Davis
-
Publication number: 20160119595Abstract: An image may be formed in a projection system by forming a light beam with substantially a first polarization. The light beam is directed onto a first color wheel that transmits a first selected color portion of the light beam and reflects a second color portion of the light beam. The reflected second color portion is converted to a second polarization. A first portion of the image is produced with a first spatial light modulator using the first selected color portion of the light beam having the first polarization. A second portion of the image is produced with a second spatial light modulator using at least a portion of the reflected second color portion of the light beam having the second polarization. The first portion of the image and the second portion of the image are combined to form a combined image for projection.Type: ApplicationFiled: October 23, 2015Publication date: April 28, 2016Inventors: Alexander Lyubarsky, Gregory Scott Pettitt
-
Publication number: 20160037147Abstract: A system for displaying a high resolution video image utilizing multiple spatial light modulators includes at least one illumination source configured to provide illumination to multiple spatial light modulators; a video data image processor coupled to receive video image data at a first visual resolution of X by Y pixels; and multiple spatial light modulators each having an image resolution lower than the first visual resolution, each configured to project an image sub-frame onto a focal plane using an image projection system; wherein the image projection system is configured to project a first sub-frame image of a first color portion while simultaneously projecting at least a second sub-frame image of a second color portion onto the focal plane, and the first and second sub-frame images are offset from one another, so that when viewed together a viewed image has at least the first visual resolution. Methods are disclosed.Type: ApplicationFiled: July 24, 2015Publication date: February 4, 2016Inventors: Jeffrey Matthew Kempf, Gregory Scott Pettitt, Michael Terry Davis
-
Publication number: 20140253882Abstract: Apparatus and methods are disclosed for generating blue color illumination for use in a projection system. Light from a blue laser light source is reflected off a dichroic filter sequentially onto different color emitting phosphor coated light non-transmissive segments and onto a cyan color emitting phosphor coated light transmissive segment of a rotating color wheel. The different color light and cyan color light emitted by the phosphor back to the filter is selectively transmitted by the filter along a projection path. Blue laser light and cyan color light emitted by the phosphor transmitted through the color wheel is directed along a wraparound optical path back to the filter for reflection along the projection optical path.Type: ApplicationFiled: January 14, 2014Publication date: September 11, 2014Inventors: Philip Scott King, Gregory Scott Pettitt, Sajjad Ali Khan