Patents by Inventor Ned Nestorovic
Ned Nestorovic 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: 11560998Abstract: A high-efficiency lamp, emitting light from a front surface, and having a high-efficiency light source, producing a first light beam. An iris assembly has an annular body that defines a first annulus and has iris blades which can be extended into the annulus to form a second, smaller, annulus. This iris assembly is positioned relative to the light source so that the iris blades are in front of the high-efficiency light source. The annular body and therefore the first annulus have finite depth from back to front. A light guide is placed immediately behind the iris blades and defines a channel that is open at its back and its front and has a reflective interior surface, with the open back being transversely coincident to the light source so that light from the light source can travel through the channel to and out from the open front.Type: GrantFiled: August 18, 2020Date of Patent: January 24, 2023Assignee: RIVERPOINT MEDICAL, LLCInventors: John Thomas Ferguson, Ned Nestorovic, Jack Schmidt
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Patent number: 11160632Abstract: A high-efficiency medical headlamp, emitting light from a front surface, and having a high-efficiency light source, producing a first light beam. An iris assembly has an annular body that defines a first annulus and has iris blades which can be extended into the annulus to form a second, smaller, annulus. This iris assembly is positioned relative to the light source so that the iris blades are in front of the high-efficiency light source. The annular body and therefore the first annulus have finite depth from back to front. A light guide is placed immediately behind the iris blades and defines a channel that is open at its back and its front and has a reflective interior surface, with the open back being transversely coincident to the light source so that light from the light source can travel through the channel to and out from the open front.Type: GrantFiled: January 14, 2020Date of Patent: November 2, 2021Assignee: RIVERPOINT MEDICAL, LLCInventors: John Thomas Ferguson, Ned Nestorovic, Jack Schmidt
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Patent number: 10893803Abstract: A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.Type: GrantFiled: February 8, 2019Date of Patent: January 19, 2021Assignee: PHOENIX TECHNOLOGY GROUP LLCInventors: Norbert A. Massie, Stephan Hoffmann, Jack Schmidt, Ned Nestorovic
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Patent number: 10690325Abstract: A medical headlamp having a front from which light is selectively emitted. The headlamp includes a beam origination portion that produces a light beam and an iris assembly, positioned in front of the beam origination portion, having a user accessible actuator and an iris, responsive to the actuator to block a user selectable portion of the light beam. The iris is also responsive to the actuator to block none of the light beam, for maximum efficiency, when a user so selects.Type: GrantFiled: January 12, 2016Date of Patent: June 23, 2020Assignee: RIVERPOINT MEDICAL, LLCInventors: John Thomas Ferguson, Ned Nestorovic
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Publication number: 20200030628Abstract: A phototherapeutic system in accordance with an embodiment of the present technology includes a housing at least partially defining an irradiation zone configured to accommodate at least a portion of a human subject. The system further comprises an ultraviolet (UV) radiation source configured to direct UV radiation along a radiation path extending from the radiation source to the irradiation zone. The radiation source includes a concentrated source at which UV radiation is generated, and a collimating reflector (or lens) configured to reflect (or refract) the UV radiation and thereby increase collimation of the UV radiation. The system still further comprises a filter, a spreader, and a collimator disposed successively farther downstream from the radiation source along the radiation path. The spreader and the collimator respectively decrease and increase collimation of the UV radiation before the UV radiation reaches the subject.Type: ApplicationFiled: September 29, 2017Publication date: January 30, 2020Applicant: BeneSol, Inc.Inventors: William Alexander MOFFAT, Keith KIRKWOOD, Jeff STEWART, Jeff ALLISON, Brian SHAY, Ned NESTOROVIC
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Publication number: 20190239744Abstract: A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.Type: ApplicationFiled: February 8, 2019Publication date: August 8, 2019Applicant: Phoenix Technology GroupInventors: Norbert A. Massie, Stephan Hoffmann, Jack Schmidt, Ned Nestorovic
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Patent number: 10244943Abstract: A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.Type: GrantFiled: January 2, 2018Date of Patent: April 2, 2019Assignee: Phoenix Technology GroupInventors: Norbert A. Massie, Stephan Hoffmann, Jack Schmidt, Ned Nestorovic
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Publication number: 20180228368Abstract: A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.Type: ApplicationFiled: January 2, 2018Publication date: August 16, 2018Applicant: Phoenix Technology GroupInventors: Norbert A. Massie, Stephan Hoffmann, Jack Schmidt, Ned Nestorovic
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Patent number: 9872618Abstract: A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.Type: GrantFiled: August 4, 2016Date of Patent: January 23, 2018Assignee: Phoenix Technology GroupInventors: Norbert A. Massie, Stephan Hoffmann, Jack Schmidt, Ned Nestorovic
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Patent number: 9664905Abstract: Technology is disclosed for optimizing a near-eye display using a waveguide. A first waveband for a first color narrower than the full spectral bandwidth for the first color and a second waveband for a second color adjacent to the first color in the visible spectrum are generated in image light of an image generation unit like a microdisplay. The first waveband and the second waveband are coupled into a same layer of a diffractive waveguide. An input grating of the same layer of the waveguide has a grating wavelength band approximately matching a waveband extensive with the first waveband and the second waveband. A converted green light emitting diode (LED) may be used for obtaining a first waveband centered around 515 nm in some examples. One of more of the wavebands may be obtained using filters, for example filters using dichroic mirrors, quantum dots or a combination of these.Type: GrantFiled: June 28, 2013Date of Patent: May 30, 2017Assignee: Microsoft Technology Licensing, LLCInventors: David D. Bohn, Ned Nestorovic, Rod G. Fleck, Cynthia Bell
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Publication number: 20170035294Abstract: A retinal imager for imaging a retina of an eye includes an illumination source operable to generate illumination light and a beam splitter operable to receive the illumination light and direct the illumination light along an optical axis. The retinal imager also includes a field lens disposed along the optical axis and an objective lens disposed along the optical axis and operable to contact a cornea of the eye. An aerial image is formed adjacent to the field lens. The retinal imager further includes an image sensor and one or more lenses disposed along the optical axis between the beam splitter and the image sensor. The one or more lenses are operable to form a sensor image at the image sensor.Type: ApplicationFiled: August 4, 2016Publication date: February 9, 2017Applicant: Phoenix Technology GroupInventors: Norbert A. Massie, Stephan Hoffmann, Jack Schmidt, Ned Nestorovic
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Publication number: 20160123563Abstract: A medical headlamp having a front from which light is selectively emitted. The headlamp includes a beam origination portion that produces a light beam and an iris assembly, positioned in front of the beam origination portion, having a user accessible actuator and an iris, responsive to the actuator to block a user selectable portion of the light beam. The iris is also responsive to the actuator to block none of the light beam, for maximum efficiency, when a user so selects.Type: ApplicationFiled: January 12, 2016Publication date: May 5, 2016Applicant: RIVERPOINT MEDICAL, LLCInventors: John Thomas Ferguson, Ned Nestorovic
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Patent number: 9063331Abstract: Embodiments are disclosed herein that relate to compact optical systems for incorporation into near-eye display devices. For example, one disclosed embodiment provides a near-eye display system may comprising a light source, a first polarizing beam splitting surface configured to receive light from the light source, a mirror configured to reflect light passed by the first polarizing beam splitting surface, and a quarter wave plate positioned between the first polarizing beam splitting surface and the mirror. The near-eye display system may further include a second polarizing beam splitting surface positioned at an angle relative to the first polarizing beam splitting surface and a microdisplay configured to produce an image via light received from the second polarizing beam splitting surface.Type: GrantFiled: February 26, 2013Date of Patent: June 23, 2015Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: David D. Bohn, Ned Nestorovic
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Publication number: 20150002528Abstract: Technology is disclosed for optimizing a near-eye display using a waveguide. A first waveband for a first color narrower than the full spectral bandwidth for the first color and a second waveband for a second color adjacent to the first color in the visible spectrum are generated in image light of an image generation unit like a microdisplay. The first waveband and the second waveband are coupled into a same layer of a diffractive waveguide. An input grating of the same layer of the waveguide has a grating wavelength band approximately matching a waveband extensive with the first waveband and the second waveband. A converted green light emitting diode (LED) may be used for obtaining a first waveband centered around 515 nm in some examples. One of more of the wavebands may be obtained using filters, for example filters using dichroic mirrors, quantum dots or a combination of these.Type: ApplicationFiled: June 28, 2013Publication date: January 1, 2015Inventors: David D. Bohn, Ned Nestorovic, Rod G. Fleck, Cynthia Bell
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Patent number: 8873149Abstract: Technology is described for a projection optical system which optically couples image light from an image source to a near-eye display (NED) of a wearable near-eye display device. The projection optical system and the image source make up a projection light engine. Light from the image source is directed to a birdbath reflective optical element which is immersed in high index glass. The image light is reflected and collimated by the birdbath element and travels outside a housing of the projection light engine forming an external exit pupil, meaning the exit pupil is external to the projection light engine. A waveguide optically couples the image light of the external exit pupil. An example of a waveguide which can be used is a surface relief grating waveguide.Type: GrantFiled: January 28, 2013Date of Patent: October 28, 2014Inventors: David D. Bohn, Ned Nestorovic, Steve J. Robbins
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Publication number: 20140240613Abstract: Embodiments are disclosed herein that relate to compact optical systems for incorporation into near-eye display devices. For example, one disclosed embodiment provides a near-eye display system may comprising a light source, a first polarizing beam splitting surface configured to receive light from the light source, a minor configured to reflect light passed by the first polarizing beam splitting surface, and a quarter wave plate positioned between the first polarizing beam splitting surface and the mirror. The near-eye display system may further include a second polarizing beam splitting surface positioned at an angle relative to the first polarizing beam splitting surface and a microdisplay configured to produce an image via light received from the second polarizing beam splitting surface.Type: ApplicationFiled: February 26, 2013Publication date: August 28, 2014Inventors: David D. Bohn, Ned Nestorovic
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Publication number: 20140211322Abstract: Technology is described for a projection optical system which optically couples image light from an image source to a near-eye display (NED) of a wearable near-eye display device. The projection optical system and the image source make up a projection light engine. Light from the image source is directed to a birdbath reflective optical element which is immersed in high index glass. The image light is reflected and collimated by the birdbath element and travels outside a housing of the projection light engine forming an external exit pupil, meaning the exit pupil is external to the projection light engine. A waveguide optically couples the image light of the external exit pupil. An example of a waveguide which can be used is a surface relief grating waveguide.Type: ApplicationFiled: January 28, 2013Publication date: July 31, 2014Inventors: David D. Bohn, Ned Nestorovic, Steve J. Robbins
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Patent number: 5576854Abstract: In a liquid crystal light valve projector, a quarter-wave compensator plate is disposed between a polarization plate and a liquid crystal light valve to compensate for polarization irregularities induced by the off-incident reflections in the cone of light projected onto the LCLV. The quarter-wave compensation plate reverses the phase of the P component of said illumination light with respect to said compensator plate by 180.degree. thereby eliminating P-polarization leakage during the dark state of an LCLV projector. The invention also combines the compensator plate with a heat shield and a low stress-optical coefficient counter electrode substrate to reduce the birefringence of the LCLV thereby also minimizing leakage of P-polarized light onto the projection screen during the dark state of the projector.Type: GrantFiled: November 12, 1993Date of Patent: November 19, 1996Assignee: Hughes-JVC Technology CorporationInventors: Jack H. Schmidt, Ned Nestorovic, Rodney D. Sterling, Joseph M. Haggerty, Javier A. Ruiz, Robert Edwards, Roger Hollister