Patents Assigned to Optovate Limited
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Patent number: 11742466Abstract: A colour micro-LED display apparatus comprises an array of reflective optical elements and an array of micro-LED pixels with a uniform emission colour across the array arranged between the array of reflective optical elements and an output substrate. Light from the micro-LEDs is directed into the reflective optical elements and is incident on scattering regions in the apparatus. Colour converted scattered light is transmitted by the output substrate. A thin and efficient display apparatus may be provided with high spatial and angular colour uniformity and long lifetime.Type: GrantFiled: June 10, 2021Date of Patent: August 29, 2023Assignee: Optovate LimitedInventors: Graham J Woodgate, Jonathan Harrold, Michael G. Robinson
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Patent number: 11629847Abstract: 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: August 3, 2021Date of Patent: April 18, 2023Assignee: Optovate LimitedInventors: Jonathan Harrold, Graham J. Woodgate
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Patent number: 11422344Abstract: A directional illumination apparatus comprises an array of micro-LEDs that may be organic LEDs (OLEDs) or inorganic LEDs and an aligned solid catadioptric micro-optic array arranged to provide a water vapour and oxygen barrier for the micro-LEDs as well as reduced sensitivity to thermal and pressure variations. The shape of the interfaces of the solid catadioptric micro-optic array is arranged to provide total internal reflection for light from the aligned micro-LEDs using known transparent materials. A thin and efficient illumination apparatus may be used for collimated illumination in environmental lighting, display backlighting or direct display.Type: GrantFiled: January 11, 2019Date of Patent: August 23, 2022Assignee: Optovate LimitedInventors: Graham J. Woodgate, Jonathan Harrold
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Patent number: 11287109Abstract: 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: July 23, 2020Date of Patent: March 29, 2022Assignee: Optovate LimitedInventors: Jonathan Harrold, Graham J. Woodgate
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Patent number: 11061279Abstract: A switchable directional illumination apparatus comprises first and second arrays of LEDs, some of which are micro-LEDs; an aligned catadioptric micro-optic array and an aligned light guide array. In a first mode a narrow angular output is provided by a first micro-LED array and catadioptric micro-optics. In a second mode a wider angular output is provided by the second LED array and light guides. A thin and efficient illumination apparatus may be used for switching illumination in environmental lighting, display backlighting or direct display.Type: GrantFiled: March 29, 2018Date of Patent: July 13, 2021Assignee: Optovate LimitedInventors: Graham J. Woodgate, Jonathan Harrold
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Patent number: 10718492Abstract: 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: September 18, 2019Date of Patent: July 21, 2020Assignee: Optovate LimitedInventors: Jonathan Harrold, Graham J. Woodgate
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Patent number: 10605434Abstract: 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: June 26, 2019Date of Patent: March 31, 2020Assignee: Optovate LimitedInventors: Graham J. Woodgate, Jonathan Harrold
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Patent number: 10598347Abstract: 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: June 26, 2019Date of Patent: March 24, 2020Assignee: Optovate LimitedInventors: Jonathan Harrold, Graham J. Woodgate
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Patent number: 10598348Abstract: 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: June 26, 2019Date of Patent: March 24, 2020Assignee: Optovate LimitedInventors: Graham J. Woodgate, Jonathan Harrold
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Patent number: 10598346Abstract: 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: June 26, 2019Date of Patent: March 24, 2020Assignee: Optovate LimitedInventors: Jonathan Harrold, Graham J. Woodgate
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Patent number: 10533730Abstract: 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: May 1, 2019Date of Patent: January 14, 2020Assignee: Optovate LimitedInventors: Jonathan Harrold, Graham J. Woodgate
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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: 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: 9557034Abstract: 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: October 20, 2011Date of Patent: January 31, 2017Assignee: OPTOVATE LIMITEDInventors: John Graham Woodgate, Jonathan Harrold
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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: 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: 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