Patents by Inventor Neil Collings
Neil Collings 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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Publication number: 20180188532Abstract: There is provided a display system comprising a data provider, a spatial light modulator and a second cylindrical lens. The data provider is arranged to provide holographic data comprising first data corresponding to a first cylindrical lens having optical power in a first direction. The spatial light modulator is arranged to receive the holographic data, wherein the spatial light modulator is arranged to spatially-modulate received light in accordance with the holographic data. The second cylindrical lens is arranged to receive spatially-modulated light from the spatial light modulator and perform a one-dimensional Fourier transform of the received light in a second direction orthogonal to the first direction.Type: ApplicationFiled: March 3, 2017Publication date: July 5, 2018Applicant: Dualitas Ltd.Inventors: Jamieson CHRISTMAS, Neil COLLINGS
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Patent number: 10007234Abstract: Provided is an optically addressable spatial light modulator (OASLM)-based holographic display and a method of operating the same. The display includes an addressing unit including a light source unit emitting a plurality of recording beams, a driving mirror array including driving mirrors that each reflect a recording beam incident thereon, and a mirror member array including mirror members that each obliquely reflect a recording beam incident thereon, in which each of the driving mirrors corresponds to one of the mirror members. The recording beams, which are transmitted by the addressing unit, are focused onto the OASLM by micro lenses of a lenslet array. The OASLM is optically addressed by the recording beams focused by the micro lenses of the lenslet array and thus modulates and diffracts a reproduction beam, incident thereon from a reproduction beam providing unit, and thus a holographic image is reproduced.Type: GrantFiled: June 3, 2014Date of Patent: June 26, 2018Assignees: SAMSUNG ELECTRONICS CO., LTD., CAMBRIDGE ENTERPRISE LIMITEDInventors: Hong-seok Lee, Hoon Song, Kang-hee Won, Neil Collings, Daping Chu
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Patent number: 9930431Abstract: This invention relates to methods and apparatus for routing light beams in telecommunications devices using holographic techniques, in particular by displaying kinoforms on Liquid Crystal on Silicon devices. At least one optical input to receives an input beam. A plurality of optical outputs and a spatial light modulator (SLM) on an optical path between said optical input and said optical outputs are provided, and a driver for said SLM to display a kinoform on said SLM diffracts said input beam into an output beam comprising a plurality of diffraction orders, wherein a routed one of said diffraction orders is directed to at least one selected said optical output; said apparatus is configured to modify a wavefront of said output beam to reduce a coupling of said output beam into said selected optical output; and said kinoform is adapted to compensate for said wavefront modification to compensate for said reduced coupling.Type: GrantFiled: June 6, 2016Date of Patent: March 27, 2018Assignee: Cambridge Enterprise LimitedInventors: Daping Chu, Neil Collings, William Crossland, Maura Michelle Redmond, Brian Robertson
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Publication number: 20170315507Abstract: A LCOS routing device, comprising: an optical input and plurality of optical outputs; a spatial light modulator (SLM) between said input and output, for displaying a kinoform; a data processor, configured to provide kinoform data for displaying said kinoform on said SLM. Said data processor inputs routing and calculates said kinoform data. Said data processor calculates kinoform data by: determining an initial phase pattern for said kinoform; calculating a replay field of said phase pattern; modifying an amplitude component of said replay field, retaining a phase component of said replay field to provide an updated replay field; performing a space-frequency transform on said updated replay field to determine an updated phase pattern for said kinoform; and repeating said calculating and updating of said replay field and said performing of said space-frequency transform until said kinoform for display is determined; and outputting said kinoform data for display on said LCOS SLM.Type: ApplicationFiled: December 19, 2016Publication date: November 2, 2017Inventors: Neil Collings, Andreas Georgiou, Maura Michelle Redmond, Brian Robertson, Jinsong Liu, William Crossland, John Richard Moore, Daping Chu
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Patent number: 9774930Abstract: We describe methods and devices for manipulating optical signals. A method of manipulating an optical signal comprises providing a device (100) comprising a layer (106) of blue phase liquid crystal in the path of the optical signal; and applying a dynamically varying spatial pattern of voltages across the layer (106) of blue phase liquid crystal, thereby causing the refractive index of the layer (106) of blue phase liquid crystal to vary according the dynamically varying spatial pattern.Type: GrantFiled: January 23, 2013Date of Patent: September 26, 2017Assignee: Cambridge Enterprise LimitedInventors: Daping Chu, Neil Collings, John Richard Moore, Mykhaylo Pivnenko, Brian Robertson
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Patent number: 9547276Abstract: We describe a LCOS (liquid crystal on silicon) telecommunications light beam routing device, the device comprising: an optical input; a plurality of optical outputs; a LCOS spatial light modulator (SLM) in an optical path between said input and said output, for displaying a kinoform; a data processor, coupled to said SLM, configured to provide kinoform data for displaying said kinoform on said SLM; wherein said kinoform data defines a kinoform which routes a beam from said optical input to a selected said optical output; wherein said data processor is configured to input routing data defining said selected optical output and to calculate said kinoform data for routing said beam responsive to said routing data; and wherein said data processor is configured to calculate said kinoform data by: determining an initial phase pattern for said kinoform; calculating a replay field of said phase pattern; modifying an amplitude component of said replay field to represent a target replay field for said beam routing, retaType: GrantFiled: February 15, 2012Date of Patent: January 17, 2017Assignee: Cambridge Enterprise LimitedInventors: Neil Collings, Andreas Georgiou, Marua Michelle Redmond, Brian Robertson, Jinsong Liu, William Crossland, John Richard Moore, Daping Chu
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Publication number: 20160301994Abstract: This invention relates to methods and apparatus for routing light beams in telecommunications devices using holographic techniques, in particular by displaying kinoforms on Liquid Crystal on Silicon devices. At least one optical input to receives an input beam. A plurality of optical outputs and a spatial light modulator (SLM) on an optical path between said optical input and said optical outputs are provided, and a driver for said SLM to display a kinoform on said SLM diffracts said input beam into an output beam comprising a plurality of diffraction orders, wherein a routed one of said diffraction orders is directed to at least one selected said optical output; said apparatus is configured to modify a wavefront of said output beam to reduce a coupling of said output beam into said selected optical output; and said kinoform is adapted to compensate for said wavefront modification to compensate for said reduced coupling.Type: ApplicationFiled: June 6, 2016Publication date: October 13, 2016Applicant: Cambridge Enterprise LimitedInventors: Daping Chu, Neil Collings, William Crossland, Maura Michelle Redmond, Brian Robertson
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Patent number: 9363582Abstract: This invention relates to methods and apparatus for routing light beams in telecommunications devices using holographic techniques, in particular by displaying kinoforms on LCOS (Liquid Crystal on Silicon) devices.Type: GrantFiled: March 7, 2012Date of Patent: June 7, 2016Assignee: Cambridge Enterprise LimitedInventors: Daping Chu, Neil Collings, William Crossland, Maura Michelle Redmond, Brian Robertson
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Patent number: 9354604Abstract: Provided are an optically addressable spatial light modulator (OASLM) divided into a plurality of segments, and an apparatus and method for displaying a holographic three-dimensional (3D) image using the OASLM. The holographic 3D image display apparatus includes a first light source which emits a write beam, an electric addressable spatial light modulator (EASLM) which modulates the write beam emitted from the first light source according to hologram information regarding a 3D image, a second light source which emits a read beam, an OASLM which receives the write beam modulated by the EASLM and modulates the read beam emitted from the second light source according to hologram information included in the modulated write beam, a scanning optical unit which projects the write beam modulated by the EASLM onto the OASLM, and a Fourier lens which focuses the read beam modulated by the OASLM onto a predetermined space to form the 3D image.Type: GrantFiled: April 8, 2013Date of Patent: May 31, 2016Assignees: SAMSUNG ELECTRONICS CO., LTD., CAMBRIDGE ENTERPRISE LIMITEDInventors: Hong-seok Lee, Neil Collings, Daping Chu, Hoon Song, William Alden Crossland, Jhen Si Chen
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Patent number: 9274400Abstract: The invention relates to optical beam steering. There is described an optical beam steering apparatus, comprising: a splitter arranged to split an optical beam into at least a first part having a first polarization and a second part having a second polarization, said first and second polarizations being substantially mutually orthogonal; a first liquid crystal device region arranged to receive said first part and to have director orientation substantially aligned to said first polarization; and a second liquid crystal device region arranged to receive said second part and to have director orientation substantially aligned to said second polarization.Type: GrantFiled: November 13, 2009Date of Patent: March 1, 2016Assignee: Cambridge Enterprise Limited, University of CambridgeInventors: Neil Collings, William Crossland, Maura Michelle Redmond, John Richard Moore, David Nugent, Brian Robertson
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Publication number: 20150286187Abstract: We describe a LCOS (liquid crystal on silicon) telecommunications light beam routing device, the device comprising: an optical input; a plurality of optical outputs; a LCOS spatial light modulator (SLM) in an optical path between said input and said output, for displaying a kinoform; a data processor, coupled to said SLM, configured to provide kinoform data for displaying said kinoform on said SLM; wherein said kinoform data defines a kinoform which routes a beam from said optical input to a selected said optical output; wherein said data processor is configured to input routing data defining said selected optical output and to calculate said kinoform data for routing said beam responsive to said routing data; and wherein said data processor is configured to calculate said kinoform data by: determining an initial phase pattern for said kinoform; calculating a replay field of said phase pattern; modifying an amplitude component of said replay field to represent a target replay field for said beam routing, retaType: ApplicationFiled: February 15, 2012Publication date: October 8, 2015Applicant: CAMBRIDGE ENTERPRISE LIMITEDInventors: Neil Collings, Andreas Georgiou, Marua Michelle Redmond, Brian Robertson, Jinsong Liu, William Crossland, John Richard Moore, Daping Chu
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Publication number: 20140375763Abstract: Provided is an optically addressable spatial light modulator (OASLM)-based holographic display and a method of operating the same. The display includes an addressing unit including a light source unit emitting a plurality of recording beams, a driving mirror array including driving mirrors that each reflect a recording beam incident thereon, and a mirror member array including mirror members that each obliquely reflect a recording beam incident thereon, in which each of the driving mirrors corresponds to one of the mirror members. The recording beams, which are transmitted by the addressing unit, are focused onto the OASLM by micro lenses of a lenslet array. The OASLM is optically addressed by the recording beams focused by the micro lenses of the lenslet array and thus modulates and diffracts a reproduction beam, incident thereon from a reproduction beam providing unit, and thus a holographic image is reproduced.Type: ApplicationFiled: June 3, 2014Publication date: December 25, 2014Applicants: SAMSUNG ELECTRONICS CO., LTD., CAMBRIDGE ENTERPRISE LIMITEDInventors: Hong-seok LEE, Hoon SONG, Kang-hee WON, Neil COLLINGS, Daping CHU
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Publication number: 20140363162Abstract: We describe methods and devices for manipulating optical signals. A method of manipulating an optical signal comprises providing a device (100) comprising a layer (106) of blue phase liquid crystal in the path of the optical signal; and applying a dynamically varying spatial pattern of voltages across the layer (106) of blue phase liquid crystal, thereby causing the refractive index of the layer (106) of blue phase liquid crystal to vary according the dynamically varying spatial pattern.Type: ApplicationFiled: January 23, 2013Publication date: December 11, 2014Inventors: Daping Chu, Neil Collings, John Richard Moore, Mykhaylo Pivnenko, Brian Robertson
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Publication number: 20140355985Abstract: This invention relates to methods and apparatus for routing light beams in telecommunications devices using holographic techniques, in particular by displaying kinoforms on LCOS (Liquid Crystal on Silicon) devices.Type: ApplicationFiled: March 7, 2012Publication date: December 4, 2014Inventors: Daping Chu, Neil Collings, William Crossland, Maura Michelle Redmond, Brian Robertson
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Patent number: 8878759Abstract: A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM represents the sequence of kinoforms allowing reproduction of the image using a suitable illumination beam.Type: GrantFiled: January 7, 2014Date of Patent: November 4, 2014Assignee: Cambridge Enterprise LimitedInventors: William Crossland, Neil Collings, Edward Buckley, Adrian Cable, Nicholas Lawrence, Peter Mash, Timothy Wilkinson
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Publication number: 20140118806Abstract: A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM represents the sequence of kinoforms allowing reproduction of the image using a suitable illumination beam.Type: ApplicationFiled: January 7, 2014Publication date: May 1, 2014Applicant: Cambridge Enterprise LimitedInventors: William Crossland, Neil Collings, Edward Buckley, Adrian Cable, Nicholas Lawrence, Peter Mash, Timothy Wilkinson
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Publication number: 20140104664Abstract: Provided are an optically addressable spatial light modulator (OASLM) divided into a plurality of segments, and an apparatus and method for displaying a holographic three-dimensional (3D) image using the OASLM. The holographic 3D image display apparatus includes a first light source which emits a write beam, an electric addressable spatial light modulator (EASLM) which modulates the write beam emitted from the first light source according to hologram information regarding a 3D image, a second light source which emits a read beam, an OASLM which receives the write beam modulated by the EASLM and modulates the read beam emitted from the second light source according to hologram information included in the modulated write beam, a scanning optical unit which projects the write beam modulated by the EASLM onto the OASLM, and a Fourier lens which focuses the read beam modulated by the OASLM onto a predetermined space to form the 3D image.Type: ApplicationFiled: April 8, 2013Publication date: April 17, 2014Applicants: CAMBRIDGE ENTERPRISE LIMITED, SAMSUNG ELECTRONICS CO., LTD.Inventors: Hong-seok LEE, Neil COLLINGS, Daping CHU, Hoon SONG, William Alden CROSSLAND, Jhen Si CHEN
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Patent number: 8654048Abstract: A method of displaying a video image comprises receiving sequential image frames at a processor. Each image frame is processed to obtain a kinoform. A programmable diffractive element such as an SLM represents the sequence of kinoforms allowing reproduction of the image using a suitable illumination beam.Type: GrantFiled: June 14, 2006Date of Patent: February 18, 2014Assignee: Cambridge Enterprise LimitedInventors: Neil Collings, Timothy Wilkinson, William Crossland, Edward Buckley, Adrian Cable, Nicholas Lawrence, Peter Mash
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Patent number: 8159733Abstract: A method of forming an image comprising providing a device for imparting respective phase shifts to different regions of an incident wavefront, wherein the phase shifts give rise to an image in a replay field, and causing zero-order light to be focused into a region between the replay field and the device.Type: GrantFiled: November 5, 2008Date of Patent: April 17, 2012Assignee: Cambridge Enterprise LimitedInventors: Jamieson Christmas, Neil Collings, Andreas Georgiou
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Publication number: 20110280573Abstract: This invention generally relates to an optical beam steering apparatus and a method of manufacturing an optical beam steering apparatus, and more particularly to an optical add drop multiplexer (OADM) such as a reconfigurable OADM (ROADM) comprising the optical beam steering apparatus. In one embodiment, the apparatus comprises a slab and a plurality of optical elements in or on a first surface of said slab, the plurality of optical elements including at least one liquid crystal on silicon element, the apparatus being arranged such that at least one optical beam can propagate freely in the slab from one of said plurality of optical elements to another one of said plurality of optical elements via a reflection from a second surface of the optical beam steering apparatus.Type: ApplicationFiled: November 13, 2009Publication date: November 17, 2011Applicant: CAMBRIDGE ENTERPRISE LIMITEDInventors: Neil Collings, William Crossland, Maura Michelle Redmond, David Nugent, Brian Robertson