Patents by Inventor Allen H. Tanner

Allen H. Tanner 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: 7891818
    Abstract: A projection system that includes a singe light modulation device and a plurality of light sources of different wavelengths. Each wavelength of light is incident on the light modulation device at a spatially distinct location and a temporally distinct time. The use of a scanning mirror allows the projection system to sequentially form, in full-color, each of the columns or rows of an image. The projection system is characterized by the reduction of color separation or the rainbow effect due to the rendering of each column or row in full color.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: February 22, 2011
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Robert R. Christensen, Bret D. Winkler, Dennis Elkins, Allen H. Tanner
  • Publication number: 20090028195
    Abstract: A system and method is disclosed for converting a frequency of a coherent light source. A birefringent nonlinear material is cut at an angle for critical phase matching to form a rectangular parallelepiped biased nonlinear crystal. The nonlinear crystal cut at a biased angle can be placed at an angle in a coherent light beam to enable the beam to be directed through the crystal over a substantially optimal phase matching path while minimizing back reflection of the coherent light beam to the coherent light source.
    Type: Application
    Filed: January 11, 2008
    Publication date: January 29, 2009
    Applicant: EVANS & SUTHERLAND COMPUTER CORPORATION
    Inventors: Yuri S. Grapov, Tatyana Chernysheva, Allen H. Tanner
  • Publication number: 20090002644
    Abstract: An invisible scanning safety system for use with laser projection systems that includes sensors monitoring less than the entire laser accessible region such that the region monitored is reduced to almost the absolute minimum, to thereby prevent unwarranted stoppages or disturbances in projection. The system may also monitor a 360 degree region around the lens of the laser projector, a wedge-shaped region, a pyramid-shaped region or a chimney-shaped region.
    Type: Application
    Filed: May 21, 2008
    Publication date: January 1, 2009
    Applicant: EVANS & SUTHERLAND COMPUTER CORPORATION
    Inventors: Robert R. Christensen, Bret D. Winkler, Allen H. Tanner, Jeffery J. Waite, Dennis F. Elkins, Michael J. McMahon, Forrest L. Williams
  • Publication number: 20080212035
    Abstract: A projection system that includes a singe light modulation device and a plurality of light sources of different wavelengths. Each wavelength of light is incident on the light modulation device at a spatially distinct location and a temporally distinct time. The use of a scanning mirror allows the projection system to sequentially form, in full-color, each of the columns or rows of an image. The projection system is characterized by the reduction of color separation or the rainbow effect due to the rendering of each column or row in full color.
    Type: Application
    Filed: December 12, 2007
    Publication date: September 4, 2008
    Inventors: Robert R. Christensen, Bret D. Winkler, Dennis Elkins, Allen H. Tanner
  • Patent number: 7420177
    Abstract: A system and method for generating a high-resolution image using a scanned-column projector is disclosed. The method includes the operation of generating a time-varying line image. A further operation includes collimating the time-varying line image in at least one plane. An additional operation involves scanning the collimated time-varying line image using a scan mirror. A further operation includes projecting the scanned collimated time-varying line image onto a surface. The scanned collimated time-varying line image is projected with at least one imaging element.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: September 2, 2008
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Forrest Williams, Robert R. Christensen, Allen H. Tanner
  • Patent number: 7400449
    Abstract: A system and method is disclosed for reducing visibility of image artifacts caused by diffractive elements in a laser projector having a structured diffractive device. At least two diffracted orders of light can be selected from light emitted from the structured diffractive device using a spatial light filter. The polarization of at least one of the selected diffracted orders can be changed with respect to another selected diffracted order. The selected diffracted order can be recombined to form an image having reduced visible image artifacts.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: July 15, 2008
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Robert R. Christensen, Forrest L. Williams, Allen H. Tanner
  • Publication number: 20080080054
    Abstract: A system and method is disclosed for reducing visibility of image artifacts caused by diffractive elements in a laser projector having a structured diffractive device. At least two diffracted orders of light can be selected from light emitted from the structured diffractive device using a spatial light filter. The polarization of at least one of the selected diffracted orders can be changed with respect to another selected diffracted order. The selected diffracted order can be recombined to form an image having reduced visible image artifacts.
    Type: Application
    Filed: September 29, 2006
    Publication date: April 3, 2008
    Inventors: Robert R. Christensen, Forrest L. Williams, Allen H. Tanner
  • Publication number: 20080055618
    Abstract: A system and method for correcting pixel intensities for output on a video display is disclosed. In one embodiment, the method includes the operation of generating an interpolation table having a plurality of interpolation segment endpoints spaced over a transfer function correction curve. The plurality of interpolation segment end points are distributed logarithmically over the transfer function correction curve to increase a number of correction points along a curved portion of the transfer function correction curve without substantially increasing a total number of correction points over the entire curve. Correction values for a graphic display can be determined by interpolating between the logarithmically distributed interpolation segment endpoints.
    Type: Application
    Filed: August 31, 2006
    Publication date: March 6, 2008
    Inventors: Calvin L. Simmons, Tom P. Skowyra, Bret D. Winkler, Cameron Farmer, Allen H. Tanner
  • Patent number: 7334902
    Abstract: A wide angle display system includes a linear array projector, a curved display surface, and an n-sides scanning mirror. The projector is configured to project an image along an optical axis to the scanning mirror. The scanning mirror continuously rotates about a rotational axis at a speed 1/n the refresh rate, so as to reflect and scan the image onto the display surface.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: February 26, 2008
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Harry Streid, Robert R. Christensen, Allen H. Tanner
  • Patent number: 7327909
    Abstract: A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber laser, to compensate variations in an optical system, and a method of making a tunable fiber optic component are also disclosed.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: February 5, 2008
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: David Marceau, Dennis F. Elkins, Forrest L. Williams, Allen H. Tanner
  • Patent number: 7215840
    Abstract: A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber laser, to compensate variations in an optical system, and a method of making a tunable fiber optic component are also disclosed.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: May 8, 2007
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: David Marceau, Dennis F. Elkins, Forrest L. Williams, Allen H. Tanner
  • Patent number: 7197200
    Abstract: A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber laser, to compensate variations in an optical system, and a method of making a tunable fiber optic component are also disclosed.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: March 27, 2007
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: David Marceau, Dennis F. Elkins, Forrest L. Williams, Allen H. Tanner
  • Patent number: 7193765
    Abstract: The invention provides a system and method for reducing laser speckle and interference patterns in a laser projector display when using a laser projector having a spatial light modulator (SLM) with a defined pixel rate. The method can include the operation of polarizing a laser output of a continuous wave laser such that the laser output is s-polarized with respect to a beam combiner. The s-polarized laser output can be divided into a first laser beam and a second laser beam. A phase of the second laser beam can be modulated with an amplitude sufficient to create a phase delay of approximately half a wavelength of the laser output and at a frequency at least twice that of the SLM's pixel rate.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: March 20, 2007
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Robert R. Christensen, Forrest L. Williams, Allen H. Tanner
  • Patent number: 7133583
    Abstract: A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber laser, to compensate variations in an optical system, and a method of making a tunable fiber optic component are also disclosed.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: November 7, 2006
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: David Marceau, Dennis F. Elkins, Forrest L. Williams, Allen H. Tanner
  • Patent number: 7113320
    Abstract: A communications transmitter is disclosed that utilizes a grating light valve (GLV) to impose information on an optical signal. The communications transmitter further includes at least one laser light source, a frequency dispersing device, an electrostatic modulator that serves as a GLV, and at least one data input source. The laser light source is configured to produce a light beam having a specific optical bandwidth and the frequency dispersing device is optically coupled to the light source and configured to disperse the light beam to produce a frequency dispersed light. The electrostatic modulator includes an electrostatically responsive reflective ribbon oriented to receive a portion of the frequency dispersed light having a specified bandwidth.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: September 26, 2006
    Assignee: Evans & Sutherland Computer Corporation
    Inventor: Allen H. Tanner
  • Patent number: 7110624
    Abstract: A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber laser, to compensate variations in an optical system, and a method of making a tunable fiber optic component are also disclosed.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: September 19, 2006
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Forrest L. Williams, Allen H. Tanner, David Marceau, Dennis F. Elkins
  • Patent number: 7012669
    Abstract: A panoramic display system includes a curved projection screen, a panoramic projector, and a substantially conically shaped barrier. The projector is configured to project an image onto the projection screen from a projection point located substantially above the projection screen. The conical barrier has a base disposed toward the bottom of the projection screen, and an apex region disposed toward the projection point. The barrier blocks scattered light from reflecting from portions of the curved screen to other portions thereof.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: March 14, 2006
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Harry Streid, Rob Christensen, Allen H. Tanner
  • Patent number: 6871958
    Abstract: A wide angle display system includes a linear array projector, a curved display surface, and a two-sided, substantially planar scanning mirror. The projector is configured to project an image along an optical axis to the scanning mirror. The scanning mirror continuously rotates about an axis substantially in the plane of the mirror, so as to reflect and scan the image onto the display surface.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: March 29, 2005
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Harry Streid, Rob Christensen, Allen H. Tanner
  • Patent number: 6856449
    Abstract: A microscopic optical structure controller for providing singular control of individual microscopic optical structures of a microelectromechanical optical device by a multiplexed stream of individual pixel values generated by a pixel value source. The microscopic optical structure controller includes at least one interconnect coupled to the pixel value source for receiving the multiplexed stream of individual pixel values and at least one mapper communicating with the interconnect for extracting individual pixel values from the multiplexed stream and applying the individual pixel values to one or more individual microscopic optical structures according to a configurable mapping. A method and a driver for providing singular control of individual microscopic optical structures of a microelectromechanical optical device are also disclosed.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: February 15, 2005
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Bret D. Winkler, Dennis F. Elkins, Allen H. Tanner
  • Publication number: 20040179766
    Abstract: A tunable fiber optic component providing environmental isolation, thermal tuning, and mechanical tuning and a method of tuning a fiber optic component using application of substantially simultaneous varying of temperature and mechanical strain is disclosed. A method of using a tunable fiber optic component, for example, a distributed feedback fiber laser, to compensate variations in an optical system, and a method of making a tunable fiber optic component are also disclosed.
    Type: Application
    Filed: March 23, 2004
    Publication date: September 16, 2004
    Inventors: Forrest L. Williams, Allen H. Tanner, David Marceau, Dennis F. Elkins