Patents by Inventor Ian Powell
Ian Powell 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: 11693238Abstract: An optical lens arrangement comprises a first Fresnel lens element and a second lens element. The first Fresnel lens element defines a flat surface side and an opposite faceted surface side defining wedge and draft faces. The flat surface side faces towards the eye of a user and the opposite faceted surface side faces away from the eye of the user. The second lens element interfaces with the faceted surface side of first Fresnel lens. The second lens element is selected from the group consisting of: a second Fresnel lens element, a singlet lens element, a doublet lens element and any combination thereof. The first Fresnel lens is proximal relative to the eye of the user and the second lens element is distal relative to the eye of the user. Head mounted devices (HMD) including these optical lens arrangements are provided. Methods of making such optical lens arrangements and HMDs are also provided.Type: GrantFiled: July 6, 2020Date of Patent: July 4, 2023Assignee: APPLE INC.Inventors: Simon Fortin-Deschenes, Ian Powell
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Publication number: 20200333591Abstract: An optical lens arrangement comprises a first Fresnel lens element and a second lens element. The first Fresnel lens element defines a flat surface side and an opposite faceted surface side defining wedge and draft faces. The flat surface side faces towards the eye of a user and the opposite faceted surface side faces away from the eye of the user. The second lens element interfaces with the faceted surface side of first Fresnel lens. The second lens element is selected from the group consisting of: a second Fresnel lens element, a singlet lens element, a doublet lens element and any combination thereof. The first Fresnel lens is proximal relative to the eye of the user and the second lens element is distal relative to the eye of the user. Head mounted devices (HMD) including these optical lens arrangements are provided. Methods of making such optical lens arrangements and HMDs are also provided.Type: ApplicationFiled: July 6, 2020Publication date: October 22, 2020Inventors: Simon Fortin-Deschenes, Ian Powell
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Patent number: 10761321Abstract: An optical lens arrangement comprises a first Fresnel lens element and a second lens element, The first Fresnel lens element defines a flat surface side and an opposite faceted surface side defining wedge and draft faces. The flat surface side faces towards the eye of a user and the opposite faceted surface side faces away from the eye of the user. The second lens element interfaces with the faceted surface side of first Fresnel lens. The second lens element is selected from the group consisting of: a second Fresnel lens element, a singlet lens element, a doublet lens element and any combination thereof. The first Fresnel lens is proximal relative to the eye of the user and the second lens element is distal relative to the eye of the user. Head mounted devices (HMD) including these optical lens arrangements are provided. Methods of making such optical lens arrangements and HMDs are also provided.Type: GrantFiled: March 21, 2017Date of Patent: September 1, 2020Assignee: Apple Inc.Inventors: Simon Fortin-DeschĂȘnes, Ian Powell
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Publication number: 20190227305Abstract: An optical lens arrangement comprises a first Fresnel lens element and a second lens element, The first Fresnel lens element defines a flat surface side and an opposite faceted surface side defining wedge and draft faces. The flat surface side faces towards the eye of a user and the opposite faceted surface side faces away from the eye of the user. The second lens element interfaces with the faceted surface side of first Fresnel lens. The second lens element is selected from the group consisting of: a second Fresnel lens element, a singlet lens element, a doublet lens element and any combination thereof. The first Fresnel lens is proximal relative to the eye of the user and the second lens element is distal relative to the eye of the user. Head mounted devices (HMD) including these optical lens arrangements are provided. Methods of making such optical lens arrangements and HMDs are also provided.Type: ApplicationFiled: March 21, 2017Publication date: July 25, 2019Inventors: Simon Fortin-DeschĂȘnes, Ian Powell
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Patent number: 8807751Abstract: A method and apparatus for quantitative imaging of the retinal fundus. The method for retinal health assessment comprises imaging the retinal fundus of a patient's eye at different wavelengths within a spectral range and determining spectral reflectivity of the retina for each pixel within a field of view (FOV). The retinal health is assessed based on the spectral reflectivity of the retina. The metabolic and anatomical activity of the eye is monitored to detect, at the earliest stage, activity that could lead to the onset of blinding eye diseases such as macular degeneration, diabetic retinopathy, glaucoma, cataracts, etc.Type: GrantFiled: July 12, 2013Date of Patent: August 19, 2014Assignee: Annidis Health Systems Corp.Inventors: David Alexander Kahn, Ian Powell, Alan Boate, Jeremy Lloyd Gribben
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Publication number: 20130301004Abstract: A method and apparatus for quantitative imaging of the retinal fundus. The method for retinal health assessment comprises imaging the retinal fundus of a patient's eye at different wavelengths within a spectral range and determining spectral reflectivity of the retina for each pixel within a field of view (FOV). The retinal health is assessed based on the spectral reflectivity of the retina. The metabolic and anatomical activity of the eye is monitored to detect, at the earliest stage, activity that could lead to the onset of blinding eye diseases such as macular degeneration, diabetic retinopathy, glaucoma, cataracts, etc.Type: ApplicationFiled: July 12, 2013Publication date: November 14, 2013Inventors: David Alexander KAHN, Ian POWELL, Alan BOATE, Jeremy Lloyd GRIBBEN
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Patent number: 8491120Abstract: A method and apparatus for quantitatively imaging the retinal fundus. The method for retinal health assessment comprises imaging the retinal fundus of a patient's eye at different wavelengths within a spectral range and determining spectral reflectivity of the retina for each pixel within a field of view (FOV). The retinal health is assessed based on the spectral reflectivity of the retina. The metabolic and anatomical activity of the eye is monitored to detect, at the earliest stage, activity that could lead to the onset of blinding eye diseases such as macular degeneration, diabetic retinopathy, glaucoma, cataracts, etc.Type: GrantFiled: April 22, 2009Date of Patent: July 23, 2013Assignee: Annidis Health Systems Corp.Inventors: David Alexander Kahn, Ian Powell
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Publication number: 20110043756Abstract: A method and apparatus for quantitatively imaging the retinal fundus. The method for retinal health assessment comprises imaging the retinal fundus of a patient's eye at different wavelengths within a spectral range and determining spectral reflectivity of the retina for each pixel within a field of view (FOV). The retinal health is assessed based on the spectral reflectivity of the retina. The metabolic and anatomical activity of the eye is monitored to detect, at the earliest stage, activity that could lead to the onset of blinding eye diseases such as macular degeneration, diabetic retinopathy, glaucoma, cataracts, etc.Type: ApplicationFiled: April 22, 2009Publication date: February 24, 2011Applicant: ANNIDIS HEALTH SYSTEMS CORP.Inventors: David Alexander Kahn, Ian Powell
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Patent number: 7317535Abstract: A spectroscopic method and system for the spectral analysis of an optical signal directed to a wavelength dispersive component having two interleaved dispersive devices. For a single wavelength, the optical signal exiting the interleaved dispersive devices includes two wavefronts generally disposed at an angle to one another and producing an interference pattern. The interference pattern is detected and subsequently analyzed via a Fourier transform to produce the optical spectrum of the input beam. The method and system are applicable in a planar waveguide environment, in reflection and transmission geometries.Type: GrantFiled: September 9, 2005Date of Patent: January 8, 2008Assignee: National Research Council of CanadaInventors: Pavel Cheben, Ian Powell, Siegfried Janz, Dan-Xia Xu
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Publication number: 20060144170Abstract: An integrated sweep kit provides for the detection and location of covert electronic eavesdropping devices of both the radiating type (ie. transmitting electromagnetic energy) and the non-radiating type (ie. not transmitting electromagnetic energy). The kit includes at least one non-radiating device sensor for actively transmitting a detection signal, which detection signal is adapted to trigger a response from a normally non-radiating device; and at least one radiating device sensor for passively receiving a signal generated by a radiating device. A synchronization means is used for consecutively activating operation of the non-radiating device sensor and the radiating device sensor during sequential time slots so that the sensors do not interfere with one another.Type: ApplicationFiled: October 9, 2003Publication date: July 6, 2006Inventors: Andrew Stephen, Ian Roberts, Ian Powell, Steven Holmes
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Patent number: 7039267Abstract: The invention provides an optical switch having a pair of opposed optical arrays, each optical array including a fixed mirror and a plurality of independently tiltable mirrors, at least one input port for launching a beam of light into the optical switch, said input port being disposed within a respective optical array, at least two output ports for selectively receiving a beam of light from an optical path between the at least one input port and a selected one of the at least two output ports, said at least two output ports being disposed within a respective opposed optical array, and an ATO element having optical power disposed between the pair of opposed optical arrays. The pair of opposed optical arrays is disposed in respective focal planes of the ATO element. Preferably, the ATO element has a focal length equal to a Rayleigh range of a beam of light incident thereon.Type: GrantFiled: January 30, 2004Date of Patent: May 2, 2006Assignee: JDS Uniphase Inc.Inventors: Thomas Ducellier, Ian Powell, Stephen David Shaw
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Publication number: 20060055935Abstract: A spectroscopic method and system for the spectral analysis of an optical signal directed to a wavelength dispersive component having two interleaved dispersive devices. For a single wavelength, the optical signal exiting the interleaved dispersive devices includes two wavefronts generally disposed at an angle to one another and producing an interference pattern. The interference pattern is detected and subsequently analyzed via a Fourier transform to produce the optical spectrum of the input beam. The method and system are applicable in a planar waveguide environment, in reflection and transmission geometries.Type: ApplicationFiled: September 9, 2005Publication date: March 16, 2006Inventors: Pavel Cheben, Ian Powell, Siegfried Janz, Dan-Xia Xu
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Publication number: 20040184716Abstract: The invention provides an optical switch having a pair of opposed optical arrays, each optical array including a fixed mirror and a plurality of independently tiltable mirrors, at least one input port for launching a beam of light into the optical switch, said input port being disposed within a respective optical array, at least two output ports for selectively receiving a beam of light from an optical path between the at least one input port and a selected one of the at least two output ports, said at least two output ports being disposed within a respective opposed optical array, and an ATO element having optical power disposed between the pair of opposed optical arrays. The pair of opposed optical arrays is disposed in respective focal planes of the ATO element. Preferably, the ATO element has a focal length equal to a Rayleigh range of a beam of light incident thereon.Type: ApplicationFiled: January 30, 2004Publication date: September 23, 2004Inventors: Thomas Ducellier, Ian Powell, Stephen David Shaw
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Publication number: 20040127923Abstract: A microkeratome cutting blade assembly 10 includes a cutting blade 12 attached to a blade holder 14. A blade extension 18 is controlled to within at least six (6) ten-thousandths of an inch of a tangent extension length.Type: ApplicationFiled: December 30, 2002Publication date: July 1, 2004Inventors: Ian A. Powell, Craig A. Barrile-Josephson, Michael H. Dobner, Peter J. Halecki, James Kirch, John J. Weidenbenner, Laurence J. Cull, Ta-Chung Hsia
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Publication number: 20040127921Abstract: A microkeratome cutting blade assembly 10 includes a cutting blade 12 and a blade holder 14 attached to the cutting blade 12. The cutting blade 12 is keyed to aid in ensuring that a cutting blade 12 top surface 24 abuts the blade holder 14 during manufacturing.Type: ApplicationFiled: December 30, 2002Publication date: July 1, 2004Inventors: Ian A. Powell, Craig A. Barrile-Josephson, Michael H. Dobner, Peter J. Halecki, James Kirch
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Patent number: 6002483Abstract: An optical device for measuring the length of a surface that has an undulating specular appearance. The device includes a beam delivery unit that superimposes a pair of laser beams onto a moving surface for producing an interference pattern having straight-line fringes on it and a light collector assembly that captures radiation reflected from different parts along the surface and directs the radiation to a detector. One particular beam delivery unit creates two interfering beams by using refracting prisms to intercept and redirect half of an elliptically shaped laser beam leaving the other half as the second beam. The collector assembly can have a variety of configurations and acts like a bucket collecting as much of the reflected radiation as possible. In order to accomplish this, the numerical aperture in the object space of the collector assembly is made greater than 0.5.Type: GrantFiled: March 16, 1998Date of Patent: December 14, 1999Assignee: National Research Council of CanadaInventor: Ian Powell
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Patent number: 5631778Abstract: A new panoramic/fish-eye imaging system for projecting a 360 degree cylindrical field of view onto a two-dimensional annular format is described. It is rotationally symmetrical and comprises two groups of optics, each having very distinct functions. The front group of optics is basically a catoptric system employing a concave and convex mirror for converting the extreme field angles to a more manageable intermediate image. The rear group acts as a relay lens to transfer the intermediate image formed by the front group to some accessible location downstream. For improved overall performance, aberration compensation of the front group is included in the design of the relay optics. A further refinement to the design is the inclusion of an additional optical element in the form of refracting negative shell located in front of the entire arrangement. This increases the effective field of view and is useful when fields of view exceeding 180 degrees are required.Type: GrantFiled: January 16, 1996Date of Patent: May 20, 1997Assignee: National Research Council of CandaInventor: Ian Powell
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Patent number: 5629808Abstract: An optical lens is useful as a D-shape laser beam projector. The lens consists of a known linear diverging element enabling the expansion of a laser beam into an uniform line, and a matching section of an axicon, either a symmetrical half-axicon or a non-symmetrical one, cut in a plane passing through, or nearly through, its apex. The two components, joined together in a plane of cutting of the axicon section, are positioned in a laser beam such that the beam is incident on both apices of the linear diverging element and the axicon section.Type: GrantFiled: December 15, 1995Date of Patent: May 13, 1997Assignee: National Research Council of CanadaInventor: Ian Powell
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Patent number: 5499066Abstract: An optical instrument for indirectly observing an object includes a first lens system for producing a first image of the object, and an adjustable second lens system for producing a second image of the object. The second lens system is continuously adjustable between a first position wherein the second image has maximum magnification and/or a minimum area of view, and a second position wherein the second image is of a minimum magnification and/or a maximum area of view. In one aspect of the invention, the second lens system is a zoom lens system having two substantially fixed conjugate planes. In another aspect of the invention, the instrument defines a folded optical path through the lens systems which includes a generally U-shaped portion so as, in use, to reduce the separation of the observer and the observed object.Type: GrantFiled: April 21, 1993Date of Patent: March 12, 1996Assignee: Remraf Pty. Ltd.Inventors: John W. Farmer, George Smith, Malcolm Gin, John F. H. Brook, Daryl R. White, Brian A. See, Ian Powell
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Patent number: D1021068Type: GrantFiled: December 21, 2022Date of Patent: April 2, 2024Assignee: Fisher & Paykel Healthcare LimitedInventors: Kevin Blake Powell, Mark Thomas O'Connor, Brent Ian Laing, Jason Allan Klenner