Patents by Inventor Hossein ALISAFAEE
Hossein ALISAFAEE 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: 20240085000Abstract: An output device of an event indicator system is mounted relative to a surface such as a wall, a ceiling, or a floor. The output device includes a housing configured to mount to the wall or the ceiling. The housing includes a cavity. A movable door is coupled to the housing and is configured to transition between an open position and a closed position. A laser is positioned within the cavity and configured to project a graphic onto the surface when the movable door is in the open position. The laser is inoperable to project the graphic onto the surface when the movable door is in the closed position.Type: ApplicationFiled: September 8, 2023Publication date: March 14, 2024Inventors: Paul L. ECKERT, Md. Azizul ISLAM, Md. Rakibul ISLAM, Delwar HOSSAIN, Md. Borhan UDDIN, Hossein ALISAFAEE
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Publication number: 20210003265Abstract: A vehicular laser lamp that utilizes a coherent light and a beam shaping element configured to produce a standard illumination pattern. The beam shaping element may be segmented to provide multiple standard illumination patterns. Alternatively, the beam shaping element may be electrically addressable like a spatial light modulator to achieve standard illumination patterns or a desired dynamic illumination pattern. The beam shaping element may also provide a curved path for an illumination pattern. A plurality of dark zones may be produced in the illumination pattern using an active beam shaping element controlled by an electronic signal.Type: ApplicationFiled: July 1, 2020Publication date: January 7, 2021Inventor: Hossein Alisafaee
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Patent number: 10753562Abstract: An automotive headlamp that utilizes a lightguide to form light into a desired output shape and illumination pattern. The headlamp is comprised of a light emitting source, and a lightguide. The lightguide is able to create a hot spot, and a horizontal cut-off in the illumination pattern. The cut-off is formed at the exit face of the lightguide. A cut-off facet angled from the exit-face of the lightguide is used to help with obtaining a sharp cut-off.Type: GrantFiled: June 9, 2019Date of Patent: August 25, 2020Inventor: Hossein Alisafaee
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Patent number: 10569693Abstract: An electric powered lamp is disclosed. The lamp has a base, a light emitting element, and a cover over the light source. A light guide carries light from the light source to a reflective surface in the cover. Light rays run transversely through the cover.Type: GrantFiled: May 31, 2017Date of Patent: February 25, 2020Assignee: Grote Industries, Inc.Inventors: Hossein Alisafaee, Chris Billman, Travis Demaree, Cesar Perez-Bolivar
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Patent number: 10502385Abstract: A dynamic segmented-reflector for a vehicle headlamp that includes a light source and a substrate formed as a reflector sidewall. The reflector sidewall includes reflector facets that are grown on the reflector sidewall. The reflector facets include at least one mirrored surface that faces the light source, and the reflector facets are configured to adjust position to form different light patterns.Type: GrantFiled: August 28, 2017Date of Patent: December 10, 2019Assignee: Grote Industries, LLCInventors: Hossein Alisafaee, Aditya Peri, Cesar Perez-Bolivar
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Patent number: 10317030Abstract: A headlamp assembly is provided that includes a circuit board that is attached to the bottom of a headlamp reflector and that includes a plurality of light emitting elements. The plurality of light emitting elements are arranged on the circuit board in a high-beam and low-beam producing pattern configured to generate light toward the outer edge of the headlamp reflector. The headlamp assembly also includes an optical lens that includes a first optical surface and a second optical surface. The optical lens optically forms a low-beam light pattern and a high-beam light pattern from the light generated from the plurality of light emitting elements through the optical lens.Type: GrantFiled: October 24, 2017Date of Patent: June 11, 2019Assignee: Grote Industries, LLCInventors: Hossein Alisafaee, Albert J. Bolander, Jr., Paul Miller, Cesar Perez-Bolivar
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Publication number: 20190120457Abstract: A headlamp assembly is provided that includes a circuit board that is attached to the bottom of a headlamp reflector and that includes a plurality of light emitting elements. The plurality of light emitting elements are arranged on the circuit board in a high-beam and low-beam producing pattern configured to generate light toward the outer edge of the headlamp reflector. The headlamp assembly also includes an optical lens that includes a first optical surface and a second optical surface. The optical lens optically forms a low-beam light pattern and a high-beam light pattern from the light generated from the plurality of light emitting elements through the optical lens.Type: ApplicationFiled: October 24, 2017Publication date: April 25, 2019Inventors: Hossein ALISAFAEE, Albert J. BOLANDER, JR., Paul MILLER, Cesar PEREZ-BOLIVAR
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Publication number: 20180345846Abstract: An electric powered lamp is disclosed. The lamp has a base, a light emitting element, and a cover over the light source. A light guide carries light from the light source to a reflective surface in the cover. Light rays run transversely through the cover.Type: ApplicationFiled: May 31, 2017Publication date: December 6, 2018Inventors: Hossein Alisafaee, Chris Billman, Travis Demaree, Cesar Perez-Bolivar
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Publication number: 20180058653Abstract: A dynamic segmented-reflector for a vehicle headlamp that includes a light source and a substrate formed as a reflector sidewall. The reflector sidewall includes reflector facets that are grown on the reflector sidewall. The reflector facets include at least one mirrored surface that faces the light source, and the reflector facets are configured to adjust position to form different light patterns.Type: ApplicationFiled: August 28, 2017Publication date: March 1, 2018Inventors: Hossein ALISAFAEE, Aditya PERI, Cesar PEREZ-BOLIVAR
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Patent number: 9791618Abstract: A hollow-core waveguide structure for guiding an electromagnetic signal, comprising: a core material comprising a predetermined refractive index; and a cladding structure disposed about the core material, wherein the cladding structure has a refractive index that is less than unity; wherein the cladding structure comprises an Epsilon-near-zero (ENZ) metamaterial. The core material comprises air or the like. The cladding structure comprises one of substantially planar sheets disposed about the core material and a substantially tubular structure disposed about the core material. Optionally, the ENZ metamaterial comprises a plurality of nanostructures disposed in a host medium. The plurality of nanostructures comprise a transparent conducting oxide. Alternatively, the cladding structure is manufactured via a self-assembly method.Type: GrantFiled: August 22, 2014Date of Patent: October 17, 2017Assignee: The University of North Carolina at CharlotteInventors: Hossein Alisafaee, Michael Fiddy
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Publication number: 20160363726Abstract: A hollow-core waveguide structure for guiding an electromagnetic signal, comprising: a core material comprising a predetermined refractive index; and a cladding structure disposed about the core material, wherein the cladding structure has a refractive index that is less than unity; wherein the cladding structure comprises an Epsilon-near-zero (ENZ) metamaterial. The core material comprises air or the like. The cladding structure comprises one of substantially planar sheets disposed about the core material and a substantially tubular structure disposed about the core material. Optionally, the ENZ metamaterial comprises a plurality of nanostructures disposed in a host medium. The plurality of nanostructures comprise a transparent conducting oxide. Alternatively, the cladding structure is manufactured via a self-assembly method.Type: ApplicationFiled: August 22, 2014Publication date: December 15, 2016Applicant: The University Of North Carolina At CharlotteInventors: Hossein ALISAFAEE, Michael FIDDY
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Patent number: 9360590Abstract: A metamaterial-based dispersion compensator includes a plurality of layers arranged in a geometric structure; wherein the plurality of layers comprise engineered metamaterials; wherein the engineered metamaterials and the geometric structure are configured to compensate dispersion across a wavelength spectrum. The metamaterial-based dispersion compensator utilizes a specifically engineered frequency response, in a compact metamaterial form-factor, to correct for naturally occurring and problematic dispersion in physical systems such as in optical communication systems.Type: GrantFiled: December 12, 2013Date of Patent: June 7, 2016Assignee: The University of North Carolina at CharlotteInventors: Hossein Alisafaee, Michael Fiddy
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Publication number: 20150331146Abstract: A metamaterial-based dispersion compensator includes a plurality of layers arranged in a geometric structure; wherein the plurality of layers comprise engineered metamaterials; wherein the engineered metamaterials and the geometric structure are configured to compensate dispersion across a wavelength spectrum. The metamaterial-based dispersion compensator utilizes a specifically engineered frequency response, in a compact metamaterial form-factor, to correct for naturally occurring and problematic dispersion in physical systems such as in optical communication systems.Type: ApplicationFiled: December 12, 2013Publication date: November 19, 2015Applicant: UNIVERSITY OF NORTH CAROLINA AT CHARLOTTEInventors: Hossein ALISAFAEE, Michael FIDDY
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Publication number: 20150017433Abstract: The present disclosure explores and fabricates coupled plasmonic nanoparticles of gold (Au), silver (Ag), or aluminum (Al) onto nanorods or nanowires of zinc telluride (ZnTe), silicon (Si), germanium (Ge), or other semiconductor materials. Full-wave simulation is performed to obtain an optimum design for maximum light absorption. The nanorods, after being coated with a shell to form a p-n junction, or being imparted with a radial junction, are of interest for enhanced light harvesting in solar cells, for example. The fabrication method of such arrays is described. Modeling of the spectral properties using equivalent circuit theory is implemented to predict fabrication results and provide an intuitive approach regarding the design of these optical metamaterials with predetermined properties.Type: ApplicationFiled: July 2, 2014Publication date: January 15, 2015Applicant: The University Of North Carolina At CharlotteInventors: Hossein ALISAFAEE, Michael Anthony Fiddy