Patents by Inventor Eugene Dolgoff

Eugene Dolgoff 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: 7688347
    Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each “pixel area” of the LCD and storage elements to store video signal data for each pixel, with optically shielded “dead spaces” between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: March 30, 2010
    Inventor: Eugene Dolgoff
  • Patent number: 7365908
    Abstract: A large-area display is composed of two or more adjacent panels, in which the overall display provides a consistent perception of depth (and/or other characteristics of the images) in all panels from each viewing position. This is accomplished by generating a first panel having a first repeating pattern in an arrangement of successive segments of the images, and generating a second panel to be displayed adjacent to the first panel, the second panel having a second repeating pattern in an arrangement of successive segments of the images that are in the same order as the first repeating pattern but starting at a different element of the repeating pattern from the first element of the first repeating pattern, and assembling the panels adjacent to each other, thereby allowing corresponding images to be displayed on the adjacent panels when viewed from a range of various view points.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 29, 2008
    Inventor: Eugene Dolgoff
  • Patent number: 7016116
    Abstract: An image display system provides a viewer with an experience of three dimensional images by presenting a composite image source. The system includes first and second image sources, a beamcombiner, a lens and a reflective element. The reflective elements reflects the image of the second image source to the beamcombiner. The first and second image sources, the beamcombiner, and the single lens present a foreground image and a background image, with the background image presented at a greater distance from the viewer than the foreground image. The viewer perceives the foreground image and the background image as part of a scene having depth.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: March 21, 2006
    Inventor: Eugene Dolgoff
  • Publication number: 20030107804
    Abstract: A large-area display is composed of two or more adjacent panels, in which the overall display provides a consistent perception of depth (and/or other characteristics of the images) in all panels from each viewing position. This is accomplished by generating a first panel having a first repeating pattern in an arrangement of successive segments of the images, and generating a second panel to be displayed adjacent to the first panel, the second panel having a second repeating pattern in an arrangement of successive segments of the images that are in the same order as the first repeating pattern but starting at a different element of the repeating pattern from the first element of the first repeating pattern, and assembling the panels adjacent to each other, thereby allowing corresponding images to be displayed on the adjacent panels when viewed from a range of various view points.
    Type: Application
    Filed: November 8, 2002
    Publication date: June 12, 2003
    Inventor: Eugene Dolgoff
  • Publication number: 20030076423
    Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each “pixel area” of the LCD and storage elements to store video signal data for each pixel, with optically shielded “dead spaces” between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.
    Type: Application
    Filed: April 3, 2002
    Publication date: April 24, 2003
    Inventor: Eugene Dolgoff
  • Publication number: 20020126396
    Abstract: An image display system provides a viewer with an experience of three dimensional images by presenting a composite image source. The system includes first and second image sources, a beamcombiner, a lens and a reflective element. The reflective elements reflects the image of the second image source to the beamcombiner. The first and second image sources, the beamcombiner, and the single lens present a foreground image and a background image, with the background image presented at a greater distance from the viewer than the foreground image. The viewer perceives the foreground image and the background image as part of a scene having depth.
    Type: Application
    Filed: October 29, 2001
    Publication date: September 12, 2002
    Inventor: Eugene Dolgoff
  • Patent number: 6392689
    Abstract: A system for displaying moving images from image information, e.g. on videotape or disk, in the form of a series of image frames to be displayed sequentially over a period of time. The image information does not contain stereoscopic information captured at the origin. As in conventional stereoscopic display, at any particular point in time, two image frames, A and B, are displayed simultaneously, one to each of the observer's eyes. However image frames A and B are generated from a single source of sequential image information. Image frame A is derived from a frame F1 and frame B is derived from a frame F2 of the series of source image frames. Frame F2 is positioned to be conventionally displayed after frame F1 by about 0.0167 and about 0.033 seconds.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: May 21, 2002
    Inventor: Eugene Dolgoff
  • Patent number: 6310733
    Abstract: Improved optical elements having rises and faces, which may have annular or linear grooves, such as Fresnel spherical or cylindrical lenses, and methods of making them, are disclosed wherein an opaque coating is imparted to the rises by methods including positioning pre-printed opaque elements on a substrate such that when the optical element is pressed, stamped, embossed or molded from the substrate, rises of the completed element comprise said pre-printed opaque elements. A reflective element is made by imparting a reflective coating onto a substrate and then a non-reflective coating to the rises, e.g. by applying non-reflective material to the element and selectively cleaning it to leave a coat of non-reflective material adhering to the rises but not the faces. Photoresist, photographic emulsion, or ink may be used as the coating. Unwanted light may also be minimized by using circularly polarized light.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: October 30, 2001
    Inventor: Eugene Dolgoff
  • Patent number: 5900982
    Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: May 4, 1999
    Assignee: Projectavision, Inc.
    Inventors: Eugene Dolgoff, Malcolm MacFarlane, Paul B. Christie
  • Patent number: 5602679
    Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: February 11, 1997
    Assignee: Projectavision, Inc.
    Inventors: Eugene Dolgoff, Malcolm J. MacFarlane, Paul B. Christie
  • Patent number: 5491585
    Abstract: A rear screen television cabinet, comprising a cabinet having front portions including a top, two sides and a front face, viewing surface on the front face, a mirror system comprising a plurality of mirrors for reflecting and successively enlarging and reflecting an incident beam onto the rear screen and a rear assembly which substantially closes said cabinet and is foldable or collapsible to render said cabinet portable, is disclosed. The cabinet's mirror system receives and successively enlarges and reflect an incident beam from a projector, to project a large image onto the viewing surface.
    Type: Grant
    Filed: April 7, 1994
    Date of Patent: February 13, 1996
    Assignee: Projectavision, Inc.
    Inventor: Eugene Dolgoff
  • Patent number: 5300942
    Abstract: A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field crosstalk and non-information-bearing light bleed through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: April 5, 1994
    Assignee: Projectavision Incorporated
    Inventor: Eugene Dolgoff
  • Patent number: 5012274
    Abstract: An active matrix LCD light valve between crossed polarizers, utilizing individual transistors to control each "pixel area" of the LCD and storage elements to store signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field crosstalk and non-information-bearing light bleed through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid, and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: April 30, 1991
    Inventor: Eugene Dolgoff
  • Patent number: D357474
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: April 18, 1995
    Assignee: Eugene Dolgoff
    Inventor: Eugene Dolgoff
  • Patent number: D357475
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: April 18, 1995
    Assignee: Eugene Dolgoff
    Inventor: Eugene Dolgoff
  • Patent number: D379978
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: June 17, 1997
    Assignee: Projectavision, Inc.
    Inventor: Eugene Dolgoff