Patents Assigned to Sutherland
  • 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: 20080259988
    Abstract: An optical actuator having an improved response time and an improved frequency operational range due to the reduced mass of a substrate coupled to an actuator and method of making the same. The optical actuator may be formed by adhering an uncoated substrate to the actuator using an epoxy. Once cured, any deformities and irregularities in a top surface of the substrate are removed. An optical coating is then applied to the top surface of the substrate. Once finished, the optical actuator may be used in a laser resonating cavity. Further, the optical actuator desirably may have a resonant frequency of about 150 kHz.
    Type: Application
    Filed: January 22, 2008
    Publication date: October 23, 2008
    Applicant: EVANS & SUTHERLAND COMPUTER CORPORATION
    Inventors: Yuri Grapov, Dennis Elkins, David Owen, Tatyana Chernysheva
  • 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
  • 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: 7257519
    Abstract: A method is provided for correlating imprecise source data in a local coordinate system to a precise global eyepoint position for a global coordinate system within which the local coordinate system is located. The method includes the step of identifying key correlation points for the local coordinate system which has modeling inaccuracies. Global coordinates are also identified for each of the key correlation points. Another step is computing delta values for each of the key correlation points that represent the difference between key correlation points' local system coordinates and the global coordinate system's coordinate values for the key correlation points. An additional step is modifying the global eyepoint position based on delta values for selected key correlation points as the global eyepoint position moves in relation to the local coordinate system within the global coordinate system.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: August 14, 2007
    Assignee: Evans & Sutherland Computer Corporation
    Inventor: Michael A. Cosman
  • 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
  • Publication number: 20060284889
    Abstract: A system and method is provided for combining independent scene layers to form computer generated environments. The method includes the operation of constructing a terrain layer using stored terrain data. Another operation is generating a feature layer using feature layer data that is stored separately from the stored terrain data. The feature layer and the terrain layer can then be combined to form a composite scene.
    Type: Application
    Filed: August 16, 2006
    Publication date: December 21, 2006
    Applicant: Evans & Sutherland Computer Corporation
    Inventors: Michael Cosman, Robert Dawson, Heber Bennion
  • Publication number: 20060284890
    Abstract: A system and method is provided for combining independent scene layers to form computer generated environments. The method includes the operation of constructing a terrain layer using stored terrain data. Another operation is generating a feature layer using feature layer data that is stored separately from the stored terrain data. The feature layer and the terrain layer can then be combined to form a composite scene.
    Type: Application
    Filed: August 16, 2006
    Publication date: December 21, 2006
    Applicant: Evans & Sutherland Computer Corporation
    Inventors: Michael Cosman, Robert Dawson, Heber Bennion
  • 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: 7095423
    Abstract: A system and method is provided for combining independent scene layers to form computer generated environments. The method includes the operation of constructing a terrain layer using stored terrain data. Another operation is generating a feature layer using feature layer data that is stored separately from the stored terrain data. The feature layer and the terrain layer can then be combined to form a composite scene.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: August 22, 2006
    Assignee: Evans & Sutherland Computer Corporation
    Inventors: Michael A. Cosman, Robert C. Dawson, Heber B. Bennion
  • Patent number: D545075
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: June 26, 2007
    Assignee: David Sutherland, Inc.
    Inventor: Terrence J. Hunziker
  • Patent number: D545584
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: July 3, 2007
    Assignee: David Sutherland, Inc.
    Inventor: Terrence J. Hunziker
  • Patent number: D547961
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: August 7, 2007
    Assignee: David Sutherland, Inc.
    Inventors: John A. Hutton, legal representative, John Hutton, deceased
  • Patent number: D549978
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: September 4, 2007
    Assignee: David Sutherland, Inc.
    Inventor: Terrence J. Hunziker