Patents by Inventor David Brotherton-Ratcliffe
David Brotherton-Ratcliffe 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: 20160311529Abstract: A VTOL aircraft is disclosed comprising a plurality of autonomous lifting modules wherein each autonomous lifting module is composed of a physical structure in which are mounted one or more electric ducted fans, an electrical energy storage system to drive the electric ducted fans, a charging and energy storage monitoring system to charge and monitor the electrical energy storage system, an inertial navigation system, electronic speed controllers to control the electric ducted fans and one or more microcomputers assuring (a) module flight stability by control of the electric ducted fans given the input of the inertial navigation system, (b) flight planning and (c) inter-module communication.Type: ApplicationFiled: December 17, 2014Publication date: October 27, 2016Inventors: David Brotherton-Ratcliffe, Laurent Martin
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Publication number: 20160009388Abstract: An electric and hybrid Vertical-Take Off and Landing (“VTOL”) aircraft is disclosed comprising a plurality of small Electric Ducted Fans (“EDFs”) of various sizes and orientations. The thrust of each fixed EDF is individually controlled by modulation of motor power by one or more onboard microcomputers connected to a plurality of onboard laser distance measuring sensors, at least three onboard three-axis accelerometers and at least one GPS thereby allowing extremely precise and safe VTOL operation. The aircraft may be employed to allow robotic and passenger vehicles to transition extremely quickly between normal linear flight and VTOL and tb operate in extreme and gusty conditions.Type: ApplicationFiled: July 10, 2015Publication date: January 14, 2016Inventors: David Brotherton-Ratcliffe, Jerzy Lelusz
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Patent number: 9096314Abstract: An electric and hybrid Vertical-Take Off and Landing (“VTOL”) aircraft is disclosed comprising a plurality of small Electric Ducted Fans (“EDFs”) of various sizes and orientations. The thrust of each fixed EDF is individually controlled by modulation of motor power by one or more onboard microcomputers connected to a plurality of onboard laser distance measuring sensors, at least three onboard three-axis accelerometers and at least one GPS thereby allowing extremely precise and safe VTOL operation. The aircraft may be employed to allow robotic and passenger vehicles to transition extremely quickly between normal linear flight and VTOL and to operate in extreme and gusty conditions.Type: GrantFiled: March 22, 2010Date of Patent: August 4, 2015Assignee: Geola Technologies, Ltd.Inventors: David Brotherton-Ratcliffe, Jerzy Lelusz
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Patent number: 8154584Abstract: An image capture system for a digital holographic printer is disclosed comprising a digital camera (22) having a relatively small horizontal field of view (29). The camera (22) is translated along a rail (21). As the camera (22) is translated along the rail (21) the camera (22) is also rotated so that it faces a target point of an object which is to be reproduced as an hologram. The image data which is obtained by the camera (22) is converted into image data which corresponds with image data which would have been obtained had a non-rotating camera having a substantially higher horizontal field of view been translated along the rail (21) and been used to capture images of the object.Type: GrantFiled: September 8, 2006Date of Patent: April 10, 2012Assignee: Geola Technologies Ltd.Inventors: David Brotherton-Ratcliffe, Andrej Nikolskij, Stanislovas Zacharovas, Julius Pileckas, Ramunas Bakanas
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Publication number: 20120056040Abstract: An electric and hybrid Vertical-Take Off and Landing (“VTOL”) aircraft is disclosed comprising a plurality of small Electric Ducted Fans (“EDFs”) of various sizes and orientations. The thrust of each fixed EDF is individually controlled by modulation of motor power by one or more onboard microcomputers connected to a plurality of onboard laser distance measuring sensors, at least three onboard three-axis accelerometers and at least one GPS thereby allowing extremely precise and safe VTOL operation. The aircraft may be employed to allow robotic and passenger vehicles to transition extremely quickly between normal linear flight and VTOL and tb operate in extreme and gusty conditions.Type: ApplicationFiled: March 22, 2010Publication date: March 8, 2012Applicant: GEOLA TECHNOLOGIES, LTD.Inventors: David Brotherton-Ratcliffe, Jerzy Lelusz
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Patent number: 7983316Abstract: A pulsed multiple color laser system is disclosed having particular application for incorporation into a digital holographic printer for producing RGB color reflection holograms. A Nd:YLF crystal 1 in a laser cavity is excited to produce an emission at 1313 nm which is frequency converted by doubling to 656.5 nm and by tripling to 437.7 nm. In a separate cavity a similar Nd:YLF crystal 1a is synchronously or asynchronously excited to produce an emission at 1047.1 nm (or at the related line of 1053 nm) which is frequency converted by doubling to 523.6 nm (or 526.5 nm). The emissions at 437.7 nm and 656.5 nm are combined co-linearly with the emission at 523.6 nm (or 526.5 nm) to produce a single RGB pulsed laser beam.Type: GrantFiled: February 23, 2010Date of Patent: July 19, 2011Assignee: Geola Technologies Ltd.Inventors: Alexey Rodin, Florian Vergnes, David Brotherton-Ratcliffe
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Patent number: 7852887Abstract: A pulsed laser is disclosed comprising an active lasing medium (1), an output coupler (5) and a rear cavity mirror (6). The rear cavity mirror (6) is attached to a mount (21) via an intermediate attachment (15). Heating elements are embedded within the attachment (15). The attachment (15) is heated in order to vary the physical length of the laser cavity in a manner which seeks to stabilise the output energy and wavelength of the laser pulses emitted from the laser cavity.Type: GrantFiled: July 28, 2006Date of Patent: December 14, 2010Assignee: View Holographics Ltd.Inventor: David Brotherton-Ratcliffe
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Patent number: 7800803Abstract: A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.Type: GrantFiled: May 15, 2009Date of Patent: September 21, 2010Assignee: View Holographics Ltd.Inventors: David Brotherton-Ratcliffe, Florian Michel Robert Vergnes, Alexy Rodin, Mikhail Grichine
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Publication number: 20100149499Abstract: A pulsed multiple colour laser system is disclosed having particular application for incorporation into a digital holographic printer for producing RGB colour reflection holograms. A Nd:YLF crystal 1 in a laser cavity is excited to produce an emission at 1313 nm which is frequency converted by doubling to 656.5 nm and by tripling to 437.7 nm. In a separate cavity a similar Nd:YLF crystal 1a is synchronously or asynchronously excited to produce an emission at 1047.1 nm (or at the related line of 1053 nm) which is frequency converted by doubling to 523.6 nm (or 526.5 nm). The emissions at 437.7 nm and 656.5 nm are combined co-linearly with the emission at 523.6 nm (or 526.5 nm) to produce a single RGB pulsed laser beam.Type: ApplicationFiled: February 23, 2010Publication date: June 17, 2010Applicant: VIEW HOLOGRAPHICS LTD.Inventors: Alexey Rodin, Florian Vergnes, David Brotherton-Ratcliffe
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Publication number: 20100067076Abstract: A holographic printer, a hologram copier and a combined holographic printer and hologram copier system is disclosed. The printer, copier and combined system comprise a pulsed RGB laser system comprising three short cavity oscillators. With the holographic printer digital image data is encoded onto three LCOS reflective SLM displays. The combined holographic printer and hologram copier system comprises a single RGB laser system.Type: ApplicationFiled: April 27, 2007Publication date: March 18, 2010Inventor: David Brotherton-Ratcliffe
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Publication number: 20090219596Abstract: A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.Type: ApplicationFiled: May 15, 2009Publication date: September 3, 2009Applicant: VIEW HOLOGRAPHICS LTD.Inventors: David Brotherton-Ratcliffe, Florian Michel Robert Vergnes, Alexey Rodin, Mikhail Grichine
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Publication number: 20090201957Abstract: A pulsed laser is disclosed comprising an active lasing medium (1), an output coupler (5) and a rear cavity mirror (6). The rear cavity mirror (6) is attached to a mount (21) via an intermediate attachment (15). Heating elements are embedded within the attachment (15). The attachment (15) is heated in order to vary the physical length of the laser cavity in a manner which seeks to stabilise the output energy and wavelength of the laser pulses emitted from the laser cavity.Type: ApplicationFiled: July 28, 2006Publication date: August 13, 2009Applicant: Geola Technologies Ltd.Inventor: David Brotherton-Ratcliffe
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Patent number: 7548360Abstract: A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.Type: GrantFiled: March 11, 2008Date of Patent: June 16, 2009Assignee: View Holographics Ltd.Inventors: David Brotherton-Ratcliffe, Florian Michel Robert Vergnes, Alexey Rodin, Mikhail Grichine
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Publication number: 20090147072Abstract: An image capture system for a digital holographic printer is disclosed comprising a digital camera (22) having a relatively small horizontal field of view (29). The camera (22) is translated along a rail (21). As the camera (22) is translated along the rail (21) the camera (22) is also rotated so that it faces a target point of an object which is to be reproduced as an hologram. The image data which is obtained by the camera (22) is converted into image data which corresponds with image data which would have been obtained had a non-rotating camera having a substantially higher horizontal field of view been translated along the rail (21) and been used to capture images of the object.Type: ApplicationFiled: September 8, 2006Publication date: June 11, 2009Applicant: Geola Technologies Ltd.Inventors: David Brotherton-Ratcliffe, Andrej Nikolskij, Stanislovas Zacharovas, Julius Pileckas, Ramunas Bakanas
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Patent number: 7423792Abstract: A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.Type: GrantFiled: September 26, 2006Date of Patent: September 9, 2008Assignee: View Holographics LtdInventors: David Brotherton-Ratcliffe, Florian Michel Robert Vergnes, Alexey Rodin, Mikhail Grichine
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Publication number: 20080158630Abstract: A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.Type: ApplicationFiled: March 11, 2008Publication date: July 3, 2008Applicant: Geola Technologies Ltd.Inventors: David Brotherton-Ratcliffe, Florian Michel Robert Vergnes, Alexey Rodin, Mikhail Grichine
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Publication number: 20080151340Abstract: A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from multiple 2-D camera images taken of a real 3-D (moving) object or scene from a plurality of different camera positions. The data are digitally processed and displayed on a small high resolution spatial light modulator (SLM). A compact low energy pulsed laser, is used to record composite holograms. The present invention permits the creation of restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, that can be copied using traditional methods. Alternatively the same invention and apparatus permits the direct writing of hologram without the need to pass through the intermediate stage of the H1 transmission hologram.Type: ApplicationFiled: March 11, 2008Publication date: June 26, 2008Applicant: GEOLA TECHNOLOGIES LTD.Inventors: David Brotherton-Ratcliffe, Florian Michel Robert Vergnes, Alexey Rodin, Mikhail Grichine
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Patent number: 7333252Abstract: A method of writing a single or double parallax composite 1-step hologram is disclosed. Digital data is acquired from a real or virtual object and is described by a luminous intensity tensor. A single mathematical transformation is performed to convert the luminous intensity tensor into a mask tensor. The single mathematical transformation transforms the digital data whilst integrally correcting the digital data for the finite distortion of an optical objective. Corrected data, described by the mask tensor, is written on to a spatial light modulator. A laser beam is directed on to the spatial light modulator so that at least a portion of the laser beam is spatially modulated to form a spatially modulated laser beam. The spatially modulated laser beam is then passed through an optical objective having a finite distortion and in combination with a reference recording beam forms a composite hologram.Type: GrantFiled: January 27, 2003Date of Patent: February 19, 2008Assignee: XYZ Imaging, Inc.Inventors: David Brotherton-Ratcliffe, Alexey Rodin, Lynne Hrynkiw
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Patent number: 7324248Abstract: A method and apparatus for producing holograms may use a computer generated 3-D model or data generated using multiple 2-D camera images taken of a real 3-D object or scene. The data is digitally processed and displayed on a high resolution spatial light modulator (SLM). A low energy pulsed laser records composite holograms on a holographic emulsion using a special optical design. Restricted or full parallax master transmission or reflection type composite holograms, known as H1 holograms, may be created that can be copied using traditional methods to produce full or single color rainbow white-light transmission holograms, achromatic white-light transmission holograms or single or full-color white-light reflection holograms.Type: GrantFiled: November 2, 2005Date of Patent: January 29, 2008Assignee: XYZ Imaging, Inc.Inventors: David Brotherton-Ratcliffe, Florian Michel Robert Vergnes, Alexey Rodin, Mikhail Grichine
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Patent number: D772756Type: GrantFiled: September 3, 2015Date of Patent: November 29, 2016Assignee: NEVA AEROSPACES LIMITEDInventors: Anthony Gambus, David Brotherton-Ratcliffe, Florian Michel Robert Vergnes