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).
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Patent number: 7298947Abstract: An optical panel system including stackable waveguides is provided. The optical panel system displays a projected light image and comprises a plurality of planar optical waveguides in a stacked state. The optical panel system further comprises a support system that aligns and supports the waveguides in the stacked state. In one embodiment, the support system comprises at least one rod, wherein each waveguide contains at least one hole, and wherein each rod is positioned through a corresponding hole in each waveguide.Type: GrantFiled: March 5, 2007Date of Patent: November 20, 2007Assignee: Brookhaven Science AssociatesInventors: Leonard DeSanto, James T. Veligdan
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Patent number: 7222969Abstract: A video image is displayed from an optical panel by splitting the image into a plurality of image components, and then projecting the image components through corresponding portions of the panel to collectively form the image. Depth of the display is correspondingly reduced.Type: GrantFiled: May 27, 2005Date of Patent: May 29, 2007Assignee: Brookhaven Science AssociatesInventor: James T. Veligdan
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Patent number: 7187831Abstract: An optical panel system including stackable waveguides is provided. The optical panel system displays a projected light image and comprises a plurality of planar optical waveguides in a stacked state. The optical panel system further comprises a support system that aligns and supports the waveguides in the stacked state. In one embodiment, the support system comprises at least one rod, wherein each waveguide contains at least one hole, and wherein each rod is positioned through a corresponding hole in each waveguide.Type: GrantFiled: April 26, 2004Date of Patent: March 6, 2007Assignee: Brookhaven Science AssociatesInventors: Leonard DeSanto, James T. Veligdan
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Patent number: 7167619Abstract: A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. An image beam is projected across the inlet face laterally and transversely for display on the outlet face. An optical detector including a matrix of detector elements is optically aligned with the inlet face for detecting a corresponding lateral and transverse position of an inbound light spot on the outlet face.Type: GrantFiled: August 28, 2003Date of Patent: January 23, 2007Assignee: Brookhaven Science AssociatesInventors: James T. Veligdan, Leonard DeSanto
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Patent number: 7116873Abstract: 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: GrantFiled: May 24, 2004Date of Patent: October 3, 2006Assignee: Scram Technologies, Inc.Inventor: James T. Veligdan
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Patent number: 7062134Abstract: A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. A projector and imaging device cooperate with the panel for projecting a video image thereon. An optical detector bridges at least a portion of the waveguides for detecting a location on the outlet face within a target zone of an inbound light spot. A controller is operatively coupled to the imaging device and detector for displaying a cursor on the outlet face corresponding with the detected location of the spot within the target zone.Type: GrantFiled: August 28, 2003Date of Patent: June 13, 2006Assignee: Brookhaven Science AssociatesInventors: James T. Veligdan, Leonard DeSanto
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Patent number: 7025461Abstract: A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. A projector cooperates with a digital imaging device, e.g. a digital micromirror imaging device, for projecting an image through the panel for display on the outlet face. The imaging device includes an array of mirrors tiltable between opposite display and divert positions. The display positions reflect an image light beam from the projector through the panel for display on the outlet face. The divert positions divert the image light beam away from the panel, and are additionally used for reflecting a probe light beam through the panel toward the outlet face. Covering a spot on the panel, e.g. with a finger, reflects the probe light beam back through the panel toward the inlet face for detection thereat and providing interactive capability.Type: GrantFiled: August 28, 2003Date of Patent: April 11, 2006Assignee: Brookhaven Science AssociatesInventors: James T. Veligdan, Leonard DeSanto, Lisa Kaull, legal representative, Calvin Brewster, deceased
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Patent number: 6999665Abstract: An optical panel includes a plurality of stacked optical waveguides bound by black cladding to collectively form an inlet face and an opposite display screen. An inlet diffuser has an inlet surface, and an opposite outlet surface adjoining the inlet face of the waveguides. Asymmetric diffusion of image light is effected by the inlet diffuser for increasing field of view, with ambient light being absorbed through the display screen for increasing contrast. Alternatively, an outlet diffuser may be provided at the display screen to complement the inlet diffuser by differently diffusing the image light spatially at the display screen.Type: GrantFiled: October 9, 2002Date of Patent: February 14, 2006Assignee: Scram Technologies, Inc.Inventor: James T. Veligdan
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Patent number: 6948820Abstract: A display system includes a waveguide optical panel having an inlet face and an opposite outlet face. A projector and imaging device cooperate with the panel for projecting an image thereon. An optical detector is located near the panel for detecting a location on the outlet face of an inbound light spot. The inbound light is channeled to the detector which may be of a reduced size.Type: GrantFiled: August 28, 2003Date of Patent: September 27, 2005Assignee: Scram Technologies, Inc.Inventors: James T. Veligdan, Leonard DeSanto
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Patent number: 6921452Abstract: 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: GrantFiled: April 9, 2002Date of Patent: July 26, 2005Assignee: Brookhaven Science AssociatesInventor: James T. Veligdan
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Patent number: 6899433Abstract: A video image is displayed from an optical panel by splitting the image into a plurality of image components, and then projecting the image components through corresponding portions of the panel to collectively form the image. Depth of the display is correspondingly reduced.Type: GrantFiled: June 19, 2003Date of Patent: May 31, 2005Assignee: Brookhaven Science AssociatesInventor: James T. Veligdan
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Patent number: 6895151Abstract: 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: GrantFiled: February 7, 2003Date of Patent: May 17, 2005Assignee: Brookhaven Science AssociatesInventors: Cyrus Biscardi, Calvin Brewster, Leonard DeSanto, James T. Veligdan
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Patent number: 6856753Abstract: 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: GrantFiled: December 23, 2003Date of Patent: February 15, 2005Assignee: Brookhaven Science AssociatesInventors: Cyrus Biscardi, Calvin Brewster, Leonard DeSanto, James T. Veligdan
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Publication number: 20040257533Abstract: A video image is displayed from an optical panel by splitting the image into a plurality of image components, and then projecting the image components through corresponding portions of the panel to collectively form the image. Depth of the display is correspondingly reduced.Type: ApplicationFiled: June 19, 2003Publication date: December 23, 2004Inventor: James T. Veligdan
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Patent number: 6832727Abstract: A display scanner includes an optical panel having a plurality of stacked optical waveguides. The waveguides define an inlet face at one end and a screen at an opposite end, with each waveguide having a core laminated between cladding. A projector projects a scan beam of light into the panel inlet face for transmission from the screen as a scan line to scan a barcode. A light sensor at the inlet face detects a return beam reflected from the barcode into the screen. A decoder decodes the return beam detected by the sensor for reading the barcode. In an exemplary embodiment, the optical panel also displays a visual image thereon.Type: GrantFiled: April 30, 1999Date of Patent: December 21, 2004Assignee: Brookhaven Science AssociatesInventor: James T. Veligdan
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Patent number: 6782178Abstract: 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: GrantFiled: October 3, 2002Date of Patent: August 24, 2004Assignee: Brookhaven Science AssociatesInventor: James T. Veligdan
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Publication number: 20040141712Abstract: 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: ApplicationFiled: December 23, 2003Publication date: July 22, 2004Inventors: Cyrus Biscardi, Calvin Brewster, Leonard DeSanto, James T. Veligdan
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Patent number: 6755534Abstract: 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: GrantFiled: August 24, 2001Date of Patent: June 29, 2004Assignee: Brookhaven Science AssociatesInventors: James T. Veligdan, Leonard DeSanto, Calvin Brewster
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Patent number: 6741779Abstract: 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: GrantFiled: March 14, 2003Date of Patent: May 25, 2004Assignee: Scram Technologies, Inc.Inventor: James T. Veligdan
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Publication number: 20040071417Abstract: An optical panel includes a plurality of stacked optical waveguides bound by black cladding to collectively form an inlet face and an opposite display screen. An inlet diffuser has an inlet surface, and an opposite outlet surface adjoining the inlet face of the waveguides. Asymmetric diffusion of image light is effected by the inlet diffuser for increasing field of view, with ambient light being absorbed through the display screen for increasing contrast. Alternatively, an outlet diffuser may be provided at the display screen to complement the inlet diffuser by differently diffusing the image light spatially at the display screen.Type: ApplicationFiled: October 9, 2002Publication date: April 15, 2004Inventor: James T. Veligdan