Patents by Inventor Graham John Woodgate
Graham John Woodgate 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: 10473947Abstract: Disclosed is an optical valve or light valve for providing large area collimated illumination from localized light sources, and system and method thereof for 2D, 3D, and/or autosteroscopic displays. An optical valve may include a stepped structure, in which the steps include separated extraction features which may be optically hidden to light propagating in a first direction. Light propagating in a second direction may be refracted, diffracted, or reflected by the features to provide illumination beams exiting from the top surface of the optical valve. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality.Type: GrantFiled: December 12, 2016Date of Patent: November 12, 2019Assignee: RealD Spark, LLCInventors: Michael G. Robinson, Graham John Woodgate, Jonathan Harrold
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Patent number: 10330283Abstract: An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.Type: GrantFiled: December 16, 2016Date of Patent: June 25, 2019Assignee: Optovate LimitedInventors: Graham John Woodgate, Jonathan Harrold
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Publication number: 20170160554Abstract: Disclosed is an optical valve or light valve for providing large area collimated illumination from localized light sources, and system and method thereof for 2D, 3D, and/or autosteroscopic displays. An optical valve may include a stepped structure, in which the steps include separated extraction features which may be optically hidden to light propagating in a first direction. Light propagating in a second direction may be refracted, diffracted, or reflected by the features to provide illumination beams exiting from the top surface of the optical valve. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality.Type: ApplicationFiled: December 12, 2016Publication date: June 8, 2017Inventors: Michael G. Robinson, Graham John Woodgate, Jonathan Harrold
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Publication number: 20170102127Abstract: An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.Type: ApplicationFiled: December 16, 2016Publication date: April 13, 2017Applicant: Optovate LimitedInventors: Graham John WOODGATE, Jonathan HARROLD
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Patent number: 9519153Abstract: Disclosed is an optical valve or light valve for providing large area collimated illumination from localized light sources, and system and method thereof for 2D, 3D, and/or autosteroscopic displays. An optical valve may include a stepped structure, in which the steps include separated extraction features which may be optically hidden to light propagating in a first direction. Light propagating in a second direction may be refracted, diffracted, or reflected by the features to provide illumination beams exiting from the top surface of the optical valve. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality.Type: GrantFiled: November 18, 2011Date of Patent: December 13, 2016Assignee: RealD Inc.Inventors: Michael G. Robinson, Graham John Woodgate, Jonathan Harrold
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Patent number: 9188731Abstract: Disclosed is a light guiding valve apparatus including at least one transparent stepped waveguide optical valve for providing large area collimated illumination from localized light sources, and at least one further illumination source. A stepped waveguide may be a stepped structure, where the steps include extraction features hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality. Light from a separate illumination source may pass through the transparent stepped waveguide optical valve to provide at least one further additional illumination function.Type: GrantFiled: March 15, 2013Date of Patent: November 17, 2015Assignee: RealD Inc.Inventors: Graham John Woodgate, Michael G. Robinson, Jonathan Harrold, Miller H. Schuck
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Patent number: 9125253Abstract: An illumination system is provided. The illumination system comprises an array of light emitting elements, an array of directional optical elements and a light deflecting means arranged to provide a fan of light cones. A position detector senses the retroreflection from an observer's eyes and a control system reduces the intensity of light directed towards the retroreflection region. Such a system achieves glare reduction for a line-of-sight illumination apparatus.Type: GrantFiled: November 5, 2012Date of Patent: September 1, 2015Assignee: OPTOVATE LIMITEDInventors: Graham John Woodgate, Jonathan Harrold
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Patent number: 9091420Abstract: An illumination apparatus, a method of manufacture of the same and a heat sink apparatus for use in said illumination apparatus in which an array of optical elements directs light from an array of light emitting elements through a heat dissipating structure to achieve a thin and efficient light source that provides directional illumination with efficient dissipation of generated heat into the illuminated environment.Type: GrantFiled: March 29, 2011Date of Patent: July 28, 2015Assignee: OPTOVATE LIMITEDInventors: Graham John Woodgate, Jonathan Harrold
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Patent number: 9080752Abstract: A light emitting element array for an illumination apparatus, an illumination apparatus and method of manufacture of the same in which an array of light-emitting elements and an array of light directing optics are provided between first and second attached mothersheet substrates wherein the thermal resistance of at least one of the mothersheet substrates is reduced by means of thickness reduction so as to provide reduced LED junction temperature.Type: GrantFiled: October 20, 2011Date of Patent: July 14, 2015Assignee: OPTOVATE LIMITEDInventors: Graham John Woodgate, Jonathan Harrold
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Patent number: 8985810Abstract: An illumination apparatus and method of manufacture of the same in which an array of light-emitting elements is aligned to an array of optical elements to achieve a thin and efficient light source that can also be arranged to provide directional and/or programmable illumination.Type: GrantFiled: October 1, 2009Date of Patent: March 24, 2015Assignee: Optovate LimitedInventors: Graham John Woodgate, Jonathan Harrold
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Publication number: 20140306612Abstract: An illumination system is provided. The illumination system comprises an array of light emitting elements, an array of directional optical elements and a light deflecting means arranged to provide a fan of light cones. A position detector senses the retroreflection from an observer's eyes and a control system reduces the intensity of light directed towards the retroreflection region. Such a system achieves glare reduction for a line-of-sight illumination apparatus.Type: ApplicationFiled: November 5, 2012Publication date: October 16, 2014Inventors: Graham John Woodgate, Jonathan Harrold
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Patent number: 8704987Abstract: A graded index birefringent component is described and shown with at least one liquid crystal layer having a plurality of lens segments, wherein the orientation of the liquid crystal molecules varies across each lens segment of the liquid crystal layer.Type: GrantFiled: January 5, 2011Date of Patent: April 22, 2014Assignee: AU Optronics CorporationInventors: Jonathan Harrold, Graham John Woodgate, Chao-Yuan Chen
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Patent number: 8692871Abstract: An autostereoscopic display apparatus includes a spatial light modulator in which alignment features such as bump features provide radially symmetric alignment of the molecules of the liquid crystal. A parallax element is arranged over the spatial light modulator to direct light from the pixels into different viewing windows. The apertures of the pixels are shaped such that, for each individual row of pixels, a notional line parallel to the geometric axes of the parallax elements has a total length of intersection with the pixels of the row, weighted for the intensity of light modulated by the alignment features, which is the same for all positions of the notional line. This improves angular intensity uniformity. The pixels may each include plural apertures, wherein the alignment features of the apertures of each individual pixel are offset from one another in a direction perpendicular to said geometric axes. This improves angular contrast uniformity.Type: GrantFiled: January 21, 2011Date of Patent: April 8, 2014Assignee: AU Optronics Corp.Inventors: Jonathan Harrold, Graham John Woodgate, Ren-Wei Liao
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Publication number: 20140016314Abstract: A light emitting element array for an illumination apparatus, an illumination apparatus and method of manufacture of the same in which an array of light-emitting elements and an array of light directing optics are provided between first and second attached mothersheet substrates wherein the thermal resistance of at least one of the mothersheet substrates is reduced by means of thickness reduction so as to provide reduced LED junction temperature.Type: ApplicationFiled: October 20, 2011Publication date: January 16, 2014Applicant: Optovate LimitedInventors: Graham John Woodgate, Jonathan Harrold
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Publication number: 20130308339Abstract: Disclosed is a light guiding valve apparatus including at least one transparent stepped waveguide optical valve for providing large area collimated illumination from localized light sources, and at least one further illumination source. A stepped waveguide may be a stepped structure, where the steps include extraction features hidden to guided light, propagating in a first forward direction. Returning light propagating in a second backward direction may be refracted, diffracted, or reflected by the features to provide discrete illumination beams exiting from the top surface of the waveguide. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality. Light from a separate illumination source may pass through the transparent stepped waveguide optical valve to provide at least one further additional illumination function.Type: ApplicationFiled: March 15, 2013Publication date: November 21, 2013Inventors: Graham John Woodgate, Michael G. Robinson, Jonathan Harrold, Miller H. Schuck
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Publication number: 20130271959Abstract: An illumination apparatus in which an array of light-emitting elements and an array of light directing optics are provided between first and second attached mothersheet substrates wherein the thickness of at least one mothersheet substrates is most between about 0.01 mm and about 1.1 mm thick so as to minimise LED junction temperature.Type: ApplicationFiled: October 20, 2011Publication date: October 17, 2013Inventors: Graham John Woodgate, Jonathan Harrold
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Publication number: 20130258663Abstract: An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.Type: ApplicationFiled: October 20, 2011Publication date: October 3, 2013Applicant: OPTOVATE LIMITEDInventors: Graham John Woodgate, Jonathan Harrold
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Patent number: 8520155Abstract: Manufacture of a birefringent liquid crystal cell is performed as follows. A layer of isotropic material having an outer surface which is shaped with a surface relief structure and is provided with a liquid crystal alignment property is formed. A flexible sheet having an outer surface provided with a liquid crystal alignment property is formed. A curable birefringent liquid crystal material is applied to one or both of the layer of isotropic material and the flexible sheet. The flexible sheet is applied over the layer of isotropic material with the outer surfaces of the layer of isotropic material and the flexible sheet facing one another with the liquid crystal material therebetween, thereby to form a liquid crystal cell. The liquid crystal material is cured and the flexible sheet is removed from the liquid crystal cell.Type: GrantFiled: August 11, 2011Date of Patent: August 27, 2013Assignee: AU Optronics CorporationInventors: Graham John Woodgate, Jonathan Harrold
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Publication number: 20130107525Abstract: An illumination apparatus, a method of manufacture of the same and a heat sink apparatus for use in said illumination apparatus in which an array of optical elements directs light from an array of light emitting elements through a heat dissipating structure to achieve a thin and efficient light source that provides directional illumination with efficient dissipation of generated heat into the illuminated environment.Type: ApplicationFiled: March 29, 2011Publication date: May 2, 2013Applicant: OPTOVATE LIMITEDInventors: Graham John Woodgate, Jonathan Harrold
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Patent number: 8390914Abstract: A controllable light directional distributor for an illumination apparatus, and a method of manufacture of the same in which multiple elongate optical elements are arranged to provide controllable divergence angle from a light source with low divergence output angle.Type: GrantFiled: April 21, 2010Date of Patent: March 5, 2013Assignee: Optovate LimitedInventors: Graham John Woodgate, Jonathan Harrold