Patents by Inventor John Marshall Ferri
John Marshall Ferri 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).
-
Patent number: 11454875Abstract: Described examples include a device having a prism cube having a first side and a second side opposite the first side, the prism cube configured to: receive light comprising a first color light and a second color light, direct the first color light to the first side of the prism cube, and direct the second color light to the second side of the prism cube.Type: GrantFiled: November 25, 2020Date of Patent: September 27, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Alexander Lyubarsky, Michael Terry Davis, John Marshall Ferri
-
Patent number: 11320728Abstract: In described examples, a projector includes a light source to produce first light of a first color. The projector also includes a phosphor to selectively receive the first light and produce second light of a second color in response to the first light. The projector also includes a dichroic mirror to pass a portion of the second light to produce a third light of a third color. The dichroic mirror reflects a portion of the second light as fourth light of a fourth color.Type: GrantFiled: April 20, 2018Date of Patent: May 3, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Gregory S. Pettitt, Michael Terry Davis, James Francis Hallas, John Marshall Ferri
-
Patent number: 11057595Abstract: Described examples include an optical device having a first light source configured to provide a first light having a first characteristic. The optical device also has a second light source configured to provide a second light having a second characteristic. The optical device also has a combiner configured to combine the first light and the second light to provide a combined light. The optical device also has a spatial light modulator configured to modulate the combined light to provide modulated combined light. The optical device also has a divider configured to receive the modulated combined light and to direct a first portion of the modulated combined light having the first characteristic to a first target and to direct a second portion of the modulated combined light having the second characteristic to a second target.Type: GrantFiled: October 11, 2019Date of Patent: July 6, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ganapathy Sivakumar, Zhongyan Sheng, Terry Alan Bartlett, John Marshall Ferri
-
Publication number: 20210157225Abstract: Described examples include a device having a prism cube having a first side and a second side opposite the first side, the prism cube configured to: receive light comprising a first color light and a second color light, direct the first color light to the first side of the prism cube, and direct the second color light to the second side of the prism cube.Type: ApplicationFiled: November 25, 2020Publication date: May 27, 2021Inventors: Alexander Lyubarsky, Michael Terry Davis, John Marshall Ferri
-
Patent number: 10915010Abstract: Described examples include a projection system having projection optics with a projection optics axis tilted from an axis perpendicular to an image target, the projection optics configured to project an image. The projection system also having an image source, the image source configured to provide the image, the image source having an offset from the projection optics axis, a plane of the image source having an angle from perpendicular to the projection optics axis such that a projected image from the image source projected by the projection optics is focused onto the image target along an extent of the projected image.Type: GrantFiled: June 24, 2019Date of Patent: February 9, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Alexander Lyubarsky, John Marshall Ferri
-
Publication number: 20200260057Abstract: Described examples include an optical device having a first light source configured to provide a first light having a first characteristic. The optical device also has a second light source configured to provide a second light having a second characteristic. The optical device also has a combiner configured to combine the first light and the second light to provide a combined light. The optical device also has a spatial light modulator configured to modulate the combined light to provide modulated combined light. The optical device also has a divider configured to receive the modulated combined light and to direct a first portion of the modulated combined light having the first characteristic to a first target and to direct a second portion of the modulated combined light having the second characteristic to a second target.Type: ApplicationFiled: October 11, 2019Publication date: August 13, 2020Inventors: Ganapathy Sivakumar, Zhongyan Sheng, Terry Alan Bartlett, John Marshall Ferri
-
Publication number: 20200004117Abstract: Described examples include a projection system having projection optics with a projection optics axis tilted from an axis perpendicular to an image target, the projection optics configured to project an image. The projection system also having an image source, the image source configured to provide the image, the image source having an offset from the projection optics axis, a plane of the image source having an angle from perpendicular to the projection optics axis such that a projected image from the image source projected by the projection optics is focused onto the image target along an extent of the projected image.Type: ApplicationFiled: June 24, 2019Publication date: January 2, 2020Inventors: Alexander Lyubarsky, John Marshall Ferri
-
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
-
Publication number: 20180239230Abstract: In described examples, a projector includes a light source to produce first light of a first color. The projector also includes a phosphor to selectively receive the first light and produce second light of a second color in response to the first light. The projector also includes a dichroic mirror to pass a portion of the second light to produce a third light of a third color. The dichroic mirror reflects a portion of the second light as fourth light of a fourth color.Type: ApplicationFiled: April 20, 2018Publication date: August 23, 2018Inventors: Gregory S. Pettitt, Michael Terry Davis, James Francis Hallas, John Marshall Ferri
-
Patent number: 9568816Abstract: A projector system with a single imaging array has a low-etendue light source. The projector system includes a first optical path from the low-etendue light source to a plurality of optical conversion media having a plurality of emission wavelengths to provide display light with wavelengths longer than blue light. The projector system includes a second optical path from the optical conversion media to the imaging array. The projector system has a means of moving an excitation location on the optical conversion media in the first optical path. The projector system may include a blue LED, a diffuser region, or an optical conversion medium with a blue emission wavelength to provide blue display light. Light from the low-etendue light source is prevented from directly impinging on the imaging array.Type: GrantFiled: November 17, 2014Date of Patent: February 14, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: John Marshall Ferri, Sajjad Ali Khan, Michael Terry Davis, Vikrant R. Bhakta
-
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: 9291819Abstract: Apparatus and methods are described for creating multiple different heads-up display (HUD) images at different apparent distances from a viewer using a single picture generator. First and second images are generated using respective first and second subsets of modulating elements of an array of image pixel modulating elements of a spatial light modulator. Light from the first and second images is directed along respective first and second optical paths onto a transparent display surface to form respective first and second virtual images at different apparent distances within a field of view of a viewer looking through the display surface. In a described example, the modulating elements are micromirrors of a digital micromirror device (DMD) and optical elements of the respective optical paths are relatively movable to set relative path lengths.Type: GrantFiled: December 18, 2013Date of Patent: March 22, 2016Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: John Marshall Ferri
-
Patent number: 9261764Abstract: A pixel array display system which has an illumination source with a plurality of emitters in a sparse array, collimators in front of the emitters, a condenser lens downstream of the collimators, an optical homogenizing element downstream from the condenser lens, a relay lens downstream from the optical homogenizing element, a pixel array downstream from the relay lens, a rear group of lens elements of a projection lens downstream from the pixel array, a polarization converter stack downstream from the rear group of lens elements and a front group of lens elements of the projection lens downstream from the polarization converter stack, so that light from the emitters is imaged onto input apertures of the polarization converter stack.Type: GrantFiled: June 1, 2012Date of Patent: February 16, 2016Assignee: TEXAS INSTRUMENTS INCORPORATEDInventor: John Marshall Ferri
-
Publication number: 20150146174Abstract: A projector system with a single imaging array has a low-etendue light source. The projector system includes a first optical path from the low-etendue light source to a plurality of optical conversion media having a plurality of emission wavelengths to provide display light with wavelengths longer than blue light. The projector system includes a second optical path from the optical conversion media to the imaging array. The projector system has a means of moving an excitation location on the optical conversion media in the first optical path. The projector system may include a blue LED, a diffuser region, or an optical conversion medium with a blue emission wavelength to provide blue display light. Light from the low-etendue light source is prevented from directly impinging on the imaging array.Type: ApplicationFiled: November 17, 2014Publication date: May 28, 2015Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: John Marshall Ferri, Sajjad Ali Khan, Michael Terry Davis, Vikrant R. Bhakta
-
Publication number: 20150061976Abstract: Apparatus and methods are described for creating multiple different heads-up display (HUD) images at different apparent distances from a viewer using a single picture generator. First and second images are generated using respective first and second subsets of modulating elements of an array of image pixel modulating elements of a spatial light modulator. Light from the first and second images is directed along respective first and second optical paths onto a transparent display surface to form respective first and second virtual images at different apparent distances within a field of view of a viewer looking through the display surface. In a described example, the modulating elements are micromirrors of a digital micromirror device (DMD) and optical elements of the respective optical paths are relatively movable to set relative path lengths.Type: ApplicationFiled: December 18, 2013Publication date: March 5, 2015Applicant: Texas Instruments IncorporatedInventor: John Marshall Ferri
-
Publication number: 20130038838Abstract: A pixel array display system which has an illumination source with a plurality of emitters in a sparse array, collimators in front of the emitters, a condenser lens downstream of the collimators, an optical homogenizing element downstream from the condenser lens, a relay lens downstream from the optical homogenizing element, a pixel array downstream from the relay lens, a rear group of lens elements of a projection lens downstream from the pixel array, a polarization converter stack downstream from the rear group of lens elements and a front group of lens elements of the projection lens downstream from the polarization converter stack, so that light from the emitters is imaged onto input apertures of the polarization converter stack.Type: ApplicationFiled: June 1, 2012Publication date: February 14, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventor: John Marshall Ferri