Patents by Inventor James T. Veligdan

James T. Veligdan 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: 6719430
    Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: April 13, 2004
    Assignee: Scram Technologies, Inc.
    Inventors: Christopher T. Cotton, James T. Veligdan
  • Patent number: 6715886
    Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: April 6, 2004
    Assignee: Scram Technologies, Inc.
    Inventors: Christopher T. Cotton, James T. Veligdan
  • Patent number: 6685792
    Abstract: An optical panel having a small inlet, and a method of making a small inlet optical panel, are disclosed, which optical panel includes a individually coating, stacking, and cutting a first plurality of stacked optical waveguides to form an outlet face body with an outlet face, individually coating, stacking, and cutting a second plurality of stacked optical waveguides to form an inlet face body with an inlet face, and connecting an optical coupling element to the first plurality and second plurality of stacked optical waveguides, wherein the optical coupling element redirects light along a parallel axis of the inlet face to a parallel axis of the outlet face. In the preferred embodiment of the present invention, the inlet face is disposed obliquely with and askew from the outlet face.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: February 3, 2004
    Assignee: Brookhaven Science Associates
    Inventors: James T. Veligdan, David E. Slobodin
  • Patent number: 6673065
    Abstract: A laser scalpel includes a ribbon optical waveguide extending therethrough and terminating at a slender optical cutting tip. A laser beam is emitted along the height of the cutting tip for cutting tissue therealong.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: January 6, 2004
    Assignee: Brookhaven Science Associates
    Inventor: James T. Veligdan
  • Publication number: 20030218725
    Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.
    Type: Application
    Filed: May 13, 2003
    Publication date: November 27, 2003
    Inventors: Christopher T. Cotton, James T. Veligdan
  • Publication number: 20030174978
    Abstract: An optical panel is disclosed. A plurality of stacked planar optical waveguides are used to guide light from an inlet face to an outlet face of an optical panel. Each of the optical waveguides comprises a planar sheet of core material having a central plane. The core material has an index of refraction which decreases as the distance from the central plane increases. The decrease in the index of refraction occurs gradually and continuously.
    Type: Application
    Filed: October 3, 2002
    Publication date: September 18, 2003
    Inventor: James T. Veligdan
  • Publication number: 20030174979
    Abstract: An optical display panel which provides improved viewing contrast for front projection applications, and a method of producing a stacked optical waveguide panel for front projection applications, are disclosed. The optical panel includes a plurality of stacked optical waveguides, wherein each waveguide has a back face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core between an opposing pair of cladding layers, and at least one reflector connected to the back face of at least one waveguide, wherein the at least one reflector receives image light incident through at least one waveguide from the outlet face, and wherein the at least one reflector redirects the image light back through the at least one waveguide out of the outlet face. In the preferred embodiment, the outlet face is rendered black by inclusion of black within or between cladding layers.
    Type: Application
    Filed: March 14, 2003
    Publication date: September 18, 2003
    Inventor: James T. Veligdan
  • Publication number: 20030142936
    Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.
    Type: Application
    Filed: February 7, 2003
    Publication date: July 31, 2003
    Inventors: Cyrus Biscardi, Calvin Brewster, Leonard DeSanto, James T. Veligdan
  • Patent number: 6597417
    Abstract: An optical panel includes a transparent serrated first side, and an opposite second side, and a black material provided on the serrated first side for intermittently blocking or absorbing light transmission. Image light may be transmitted through the panel at the serrations, with contrast provided by the black material.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: July 22, 2003
    Assignee: Scram Technologies, Inc.
    Inventor: James T. Veligdan
  • Patent number: 6571044
    Abstract: An optical display panel which provides improved viewing contrast is disclosed. The optical panel includes a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core in contact with at least one cladding layer, wherein the at least one cladding layer includes at least one black layer, and at least one redirector connected to the inlet face of each of at least two waveguides. The at least one black layer has a first thickness, and the core has a second thickness, and the first thickness is preferably a multiple of the second thickness. In a preferred embodiment, the first thickness is at least two times greater than the second thickness. In a second preferred embodiment, the first thickness is at least four times greater than the second thickness.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: May 27, 2003
    Assignee: Scram Technologies, Inc.
    Inventor: James T. Veligdan
  • Patent number: 6535674
    Abstract: An optical display panel which provides improved viewing contrast for front projection applications, and a method of producing a stacked optical waveguide panel for front projection applications, are disclosed. The optical panel includes a plurality of stacked optical waveguides, wherein each waveguide has a back face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core between an opposing pair of cladding layers, and at least one reflector connected to the back face of at least one waveguide, wherein the at least one reflector receives image light incident through at least one waveguide from the outlet face, and wherein the at least one reflector redirects the image light back through the at least one waveguide out of the outlet face. In the preferred embodiment, the outlet face is rendered black by inclusion of black within or between cladding layers.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: March 18, 2003
    Assignee: Scram Technologies, Inc.
    Inventor: James T. Veligdan
  • Publication number: 20030038924
    Abstract: A spatially modulated light beam is projected, reflected, and redirected through a prismatic optical panel to form a video image for direct viewing thereon.
    Type: Application
    Filed: August 24, 2001
    Publication date: February 27, 2003
    Inventors: James T. Veligdan, Leonard DeSanto, Calvin Brewster
  • Patent number: 6519400
    Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: February 11, 2003
    Assignee: Brookhaven Science Associates
    Inventors: Cyrus Biscardi, Calvin Brewster, Leonard DeSanto, James T. Veligdan
  • Publication number: 20030025885
    Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.
    Type: Application
    Filed: April 25, 2002
    Publication date: February 6, 2003
    Inventors: Christopher T. Cotton, James T. Veligdan
  • Patent number: 6485145
    Abstract: An ultrathin optical panel, and a method of producing an ultrathin optical panel, are disclosed, including stacking a plurality of glass sheets, which sheets may be coated with a transparent cladding substance or may be uncoated, fastening together the plurality of stacked coated glass sheets using an epoxy or ultraviolet adhesive, applying uniform pressure to the stack, curing the stack, sawing the stack to form an inlet face on a side of the stack and an outlet face on an opposed side of the stack, bonding a coupler to the inlet face of the stack, and fastening the stack, having the coupler bonded thereto, within a rectangular housing having an open front which is aligned with the outlet face, the rectangular housing having therein a light generator which is optically aligned with the coupler. The light generator is preferably placed parallel to and proximate with the inlet face, thereby allowing for a reduction in the depth of the housing.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: November 26, 2002
    Assignee: Scram Technologies, Inc.
    Inventors: Christopher T. Cotton, James T. Veligdan
  • Patent number: 6487350
    Abstract: A multi-clad black display panel, and a method of making a multi-clad black display panel, are disclosed, wherein a plurality of waveguides, each of which includes a light-transmissive core placed between an opposing pair of transparent cladding layers and a black layer disposed between transparent cladding layers, are stacked together and sawed at an angle to produce a wedge-shaped optical panel having an inlet face and an outlet face.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: November 26, 2002
    Assignee: Brookhaven Science Associates
    Inventors: James T. Veligdan, Cyrus Biscardi, Calvin Brewster
  • Publication number: 20020172480
    Abstract: An optical display panel which provides improved viewing contrast is disclosed. The optical panel includes a plurality of stacked optical waveguides, wherein each waveguide has an inlet face and an outlet face at opposing ends of each waveguide, and wherein each waveguide is formed of a core in contact with at least one cladding layer, wherein the at least one cladding layer includes at least one black layer, and at least one redirector connected to the inlet face of each of at least two waveguides. The at least one black layer has a first thickness, and the core has a second thickness, and the first thickness is preferably a multiple of the second thickness. In a preferred embodiment, the first thickness is at least two times greater than the second thickness. In a second preferred embodiment, the first thickness is at least four times greater than the second thickness.
    Type: Application
    Filed: May 18, 2001
    Publication date: November 21, 2002
    Inventor: James T. Veligdan
  • Publication number: 20020140912
    Abstract: An optical system for producing an accurate image on an optical panel inlet face surface which is highly tilted relative to the image path. The optical system comprises an image source and an imaging element that creates an image from the image source. The optical system also comprises an anamorphic telescope for reducing anormorphic distortion of the image, and a final element for directing the image toward the optical panel. The anamorphic telescope reduces magnification of the image in a first direction and enlarges magnification of the image in a second direction which is perpendicular to the first direction. The anamorphic telescope includes a first lens group, a second lens group, and a third lens group. The first lens group and the second lens group form a first anamorphic telescopic system, and the second lens group and the third lens group form a second anamorphic telescopic system.
    Type: Application
    Filed: January 24, 2001
    Publication date: October 3, 2002
    Inventors: Christopher T. Cotton, James T. Veligdan, Milton J. Shoup
  • Patent number: 6457834
    Abstract: An optical system for producing an accurate image on an optical panel inlet face surface which is highly tilted relative to the image path. The optical system comprises an image source and an imaging element that creates an image from the image source. The optical system also comprises an anamorphic telescope for reducing anamorphic distortion of the image, and a final element for directing the image toward the optical panel. The anamorphic telescope reduces magnification of the image in a first direction and enlarges magnification of the image in a second direction which is perpendicular to the first direction. The anamorphic telescope includes a first lens group, a second lens group, and a third lens group. The first lens group and the second lens group form a first anamorphic telescopic system, and the second lens group and the third lens group form a second anamorphic telescopic system.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: October 1, 2002
    Assignee: Scram Technologies, Inc.
    Inventors: Christopher T. Cotton, James T. Veligdan, Milton J. Shoup, III
  • Publication number: 20020108693
    Abstract: An optical display panel which provides improved light intensity at a viewing angle by redirecting light emitting from the viewing screen, and a method of making a light redirective display panel, are disclosed. The panel includes an inlet face at one end for receiving light, and an outlet screen at an opposite end for displaying the light. The inlet face is defined at one end of a transparent body, which body may be formed by a plurality of waveguides, and the outlet screen is defined at an opposite end of the body. The screen includes light redirective elements at the outlet screen for re-directing light emitting from the outlet screen.
    Type: Application
    Filed: April 9, 2002
    Publication date: August 15, 2002
    Inventor: James T. Veligdan