Patents by Inventor Zeev Schiffer
Zeev Schiffer 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: 11909167Abstract: Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.Type: GrantFiled: May 11, 2023Date of Patent: February 20, 2024Assignee: ELBIT SYSTEMS ELECTRO-OPTICS—ELOP LTD.Inventors: Zeev Schiffer, Andrey Nazarov, Daniel Levy
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Publication number: 20230359017Abstract: Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.Type: ApplicationFiled: June 27, 2023Publication date: November 9, 2023Inventors: Zeev SCHIFFER, Andrey NAZAROV, Daniel LEVY
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Publication number: 20230352901Abstract: Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.Type: ApplicationFiled: May 11, 2023Publication date: November 2, 2023Inventors: Zeev SCHIFFER, Andrey NAZAROV, Daniel LEVY
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Patent number: 11735886Abstract: Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.Type: GrantFiled: December 29, 2022Date of Patent: August 22, 2023Assignee: ELBIT SYSTEMS ELECTRO-OPTICS—ELOP LTD.Inventors: Zeev Schiffer, Andrey Nazarov, Daniel Levy
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Publication number: 20230134874Abstract: Multi-Channels coherent beam combining (CBC) using a mechanism for phase and/or polarization locking that uses a reference optical beam and an array of optical detectors each detector being configured and located to detect overall intensity of an optical interference signal caused by interfering of the reference beam and a beam of the respective channel, where the fast intensity per-channel detection allows simultaneous and quick phase/polarization locking of all channels for improving beam combining system performances.Type: ApplicationFiled: December 29, 2022Publication date: May 4, 2023Inventors: Zeev SCHIFFER, Andrey NAZAROV, Daniel LEVY
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Publication number: 20220146754Abstract: Aspects of embodiments pertain to beam combining devices for coherent and spectral beam-combining. The coherent beam combining (CBC) device may comprise a monolithic body having an input surface and an output surface. The input surface may be configured to direct a plurality of coherent entering optical beams through an optical pathway inside the monolithic body towards the output surface; and a phase mask configured for combining beams, exiting from the output surface of the monolithic body, to form a single combined output beam. The Spectral beam combining (SBC) device may include a monolithic body configured to direct the entering optical beams through a multi-diffraction optical pathway inside the monolithic body by directing the entering optical beams such as to impinge a diffractive surface thereof at least twice, for combining the entering optical beams into a single multispectral combined output optical beam.Type: ApplicationFiled: February 23, 2020Publication date: May 12, 2022Inventors: Zeev SCHIFFER, Daniel LEVY, Ran Zvi MAROM
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Publication number: 20180028068Abstract: A measurement system for determining at least one parameter of a subject, the system comprising: an acoustic device for generating and irradiating a region of interest in the subject with acoustic tagging radiation having a carrier frequency and being modulated by a predetermined coding function of at least one parameter varying over time; an optical device for illuminating the region of interest with electromagnetic radiation of a predetermined frequency range, detecting an electromagnetic radiation response of the region of interest, and generating measured data indicative of interaction between the acoustic tagging radiation and the electromagnetic radiation at successive positions in the region of interest, the optical device being operable concurrently with the acoustic device during at least a first measurement session; and a control unit for processing the measured data and determining at least first data comprising spectral data as a function of position, such that each of the measured successive posiType: ApplicationFiled: February 3, 2016Publication date: February 1, 2018Inventors: Zeev SCHIFFER, Eliahu RATNER, Ilan BRESKIN, Adi TSALACH, Avihai RON
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Patent number: 8768118Abstract: A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second fiber which is a double clad fiber, and a bulk optic component positioned between the first and second fibers. At least one mode stripper is positioned between the first fiber entry port and the second fiber exit port providing for limiting and removal of propagating clad light.Type: GrantFiled: July 19, 2010Date of Patent: July 1, 2014Assignee: Elbit Systems Electro-Optics Elop Ltd.Inventors: Zachary Sacks, Zeev Schiffer
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Publication number: 20110038579Abstract: A system for coupling light into a fiber in accordance with embodiments of the present invention include a first fiber, a second fiber which is a double clad fiber, and a bulk optic component positioned between the first and second fibers. At least one mode stripper is positioned between the first fiber entry port and the second fiber exit port providing for limiting and removal of propagating clad light.Type: ApplicationFiled: July 19, 2010Publication date: February 17, 2011Applicant: ELBIT SYSTEMS ELECTRO-OPTICS ELOP LTD.Inventors: Zachary Sacks, Zeev Schiffer
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Patent number: 7778290Abstract: Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. Fiber lasers for producing Band IV wavelengths include a depolarized laser oscillator, at least one amplifier and a polarizer. Depolarized laser oscillator is an inherently depolarized CW laser, or a depolarized laser diode, which is depolarized by a depolarizer. Additional fiber lasers in accordance with embodiments of the present invention include a double clad active optical fiber having a pump power entry point for sending pump energy through the active optical fiber in a first direction, and a loop portion at a second end of the fiber for sending pump energy through the active optical fiber in a second direction which is opposite to the first direction.Type: GrantFiled: April 2, 2008Date of Patent: August 17, 2010Assignee: Elbit Systems Electro-Optics Elop Ltd.Inventors: Zachary Sacks, Zeev Schiffer
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Patent number: 7688247Abstract: A DIRCM (Direct IR Counter Measures) system includes a detection and warning apparatus for detecting a missile that might pose a threat on the platform to which said system is allocated, and for generating a warning of its existence. The warning may include data that enable the calculation of the expected direction from which the missile is approaching. The DIRCM system may also include an acquisition device for performing acquisition of the approaching missile in accordance with the data provided by the detection and warning apparatus, and issuing data that may enable the calculation in real time of the updated position of the missile, a fiber laser for generating a laser beam, and a motion and aiming enabled turret, coupled with the laser, for directing the laser beam onto the approaching missile.Type: GrantFiled: June 3, 2004Date of Patent: March 30, 2010Assignee: ELOP Electro-Optical Industries Ltd.Inventors: Israel Anschel, Vladimir Krupkin, Andrew Lovett, Zachary Sacks, Doron Chomski, Zeev Schiffer, Kuti Grossman, Elena Luria, Doron David, Itamar Shoshan
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Publication number: 20080267228Abstract: Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. Fiber lasers for producing Band IV wavelengths include a depolarized laser oscillator, at least one amplifier and a polarizer. Depolarized laser oscillator is an inherently depolarized CW laser, or a depolarized laser diode, which is depolarized by a depolarizer. Additional fiber lasers in accordance with embodiments of the present invention include a double clad active optical fiber having a pump power entry point for sending pump energy through the active optical fiber in a first direction, and a loop portion at a second end of the fiber for sending pump energy through the active optical fiber in a second direction which is opposite to the first direction.Type: ApplicationFiled: August 18, 2006Publication date: October 30, 2008Inventors: Zachary Sacks, Zeev Schiffer
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Publication number: 20080247424Abstract: Fiber lasers for producing Band I wavelengths include a laser cavity having an optical fiber with specific parameters in length and thickness and doping concentration, and having high reflectivities. Examples show the feasibility of producing such fiber lasers. Fiber lasers for producing Band IV wavelengths include a depolarized laser oscillator, at least one amplifier and a polarizer. Depolarized laser oscillator is an inherently depolarized CW laser, or a depolarized laser diode, which is depolarized by a depolarizer. Additional fiber lasers in accordance with embodiments of the present invention include a double clad active optical fiber having a pump power entry point for sending pump energy through the active optical fiber in a first direction, and a loop portion at a second end of the fiber for sending pump energy through the active optical fiber in a second direction which is opposite to the first direction.Type: ApplicationFiled: April 2, 2008Publication date: October 9, 2008Inventors: Zachary Sacks, Zeev Schiffer
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Publication number: 20070206177Abstract: A DIRCM (Direct IR Counter Measures) system includes a detection and warning apparatus for detecting a missile that might pose a threat on the platform to which said system is allocated, and for generating a warning of its existence. The warning may include data that enable the calculation of the expected direction from which the missile is approaching. The DIRCM system may also include an acquisition device for performing acquisition of the approaching missile in accordance with the data provided by the detection and warning apparatus, and issuing data that may enable the calculation in real time of the updated position of the missile, a fiber laser for generating a laser beam, and a motion and aiming enabled turret, coupled with the laser, for directing the laser beam onto the approaching missile.Type: ApplicationFiled: June 3, 2004Publication date: September 6, 2007Applicant: ELOP ELECTRO-OPTICAL INDUSTRIES LTD.Inventors: Israel Anschel, Vladimir Krupkin, Andrew Lovett, Zachary Sacks, Doron Chomski, Zeev Schiffer, Kuti Grossman, Elena Luria, Doron David, Itamar Shoshan
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Publication number: 20030063852Abstract: An apparatus and method for optimizing the collimation of the output of an optical fiber through a collimating lens, comprising placing the beam through a collimating lens, and then comparing a characteristic feature of the image to a calculated reference image. In one embodiment a side lobe, or non-central local maximum is used as the characteristic feature. The invention is ideally suited for use with a few-mode fiber, and may be utilized for a single mode fiber with the addition of an appropriate optical element between the lens and the observing point. The calculated reference image in one embodiment is calculated assuming an ideal lens and optical element, or in another embodiment a measured optical element is utilized. In another embodiment the calculated reference image is adjusted to optimize the performance of the optical assembly for a specific operating criteria or a combination of criteria.Type: ApplicationFiled: August 16, 2002Publication date: April 3, 2003Inventors: Zeev Schiffer, Sven Ring