Patents by Inventor Valentin M. Gelikonov
Valentin M. Gelikonov 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: 8159677Abstract: Variants of an interferometric device are developed for examining internal structures of objects by means of optical coherence tomography, which allow for controlling a boundary location of the observation range. The device also allows for correcting a distortion of the tomographic image of the object under study, caused by lateral scanning, due to aberrations of the optical path length for the low-coherence optical radiation directed towards the object. Embodiments of the device include either one, or two fiber-optic controlled scanners, which in different combinations perform a function of in-depth scanning of the coherence window of low-coherence optical radiation within the observation range, a function of controlling a boundary location of the observation range, and a function of compensating the optical path length aberration for the low-coherence optical radiation directed towards the object, caused by lateral scanning.Type: GrantFiled: August 4, 2005Date of Patent: April 17, 2012Assignee: Imalux CorporationInventors: Valentin M. Gelikonov, Grigory V. Gelikonov, Felix I. Feldchtein
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Patent number: 7728985Abstract: Polarization sensitive common path OCT/OCR devices are presented. Optical radiation from a source is converted into two cross-polarized replicas propagating therethrough with a predetermined optical path length difference. The two cross-polarized replicas are then delivered to an associated sample by a delivering device, which is, preferably, an optical fiber probe. A combination optical radiation is produced in at least one secondary interferometer by combining a corresponding portion of an optical radiation returning from the associated sample with a reference optical radiation reflected from a tip of an optical fiber of the optical fiber probe. Subject to a preset optical path length difference of the arms of the at least one secondary interferometer, a cross-polarized component, and/or a parallel-polarized component of the combined optical radiation, are selected. The topology of the devices allows for time domain, as well as for frequency domain registration.Type: GrantFiled: November 13, 2006Date of Patent: June 1, 2010Assignee: Imalux CorporationInventors: Felix I. Feldchtein, Valentin M. Gelikonov, Grigory V. Gelikonov
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Publication number: 20100039651Abstract: Variants of an interferometric device are developed for examining internal structures of objects by means of optical coherence tomography, which allow for controlling a boundary location of the observation range. The device also allows for correcting a distortion of the tomographic image of the object under study, caused by lateral scanning, due to aberrations of the optical path length for the low-coherence optical radiation directed towards the object. Embodiments of the device include either one, or two fiber-optic controlled scanners, which in different combinations perform a function of in-depth scanning of the coherence window of low-coherence optical radiation within the observation range, a function of controlling a boundary location of the observation range, and a function of compensating the optical path length aberration for the low-coherence optical radiation directed towards the object, caused by lateral scanning.Type: ApplicationFiled: August 4, 2005Publication date: February 18, 2010Inventors: Valentin M. Gelikonov, Grigory V. Gelikonov, Felix I. Feldchtein
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Patent number: 6992776Abstract: The present invention relates to the study of internal structure of objects by optical means. The invention presents a bi-directional sampling optical path for the low coherent optical radiation directed to the sample, i.e. a bi-directional sampling arm, and two unidirectional reference beams directed along a reference path designed as a loop. One of the reference beams propagates clockwise and the other propagates counterclockwise in the reference loop. The beam splitters non-reciprocal or polarization-dependent and by placing polarization-changing elements between the beam splitters and/or into the sampling arm and the reference loop. Thus the developed method and optical interferometer make possible to ensure highly efficient use of optical source power together with optimal signal-to-noise ratio for a given optical source power and are simple and cost effective.Type: GrantFiled: February 14, 2003Date of Patent: January 31, 2006Assignee: Imalux CorporationInventors: Felix I. Feldchtein, Paul G. Amazeen, Grigory V. Gelikonov, Valentin M. Gelikonov
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Patent number: 6950692Abstract: In a method for in vivo diagnostics of a biological tissue covered with epithelium an image of the biological tissue is acquired with the aid of a beam in the visible or near IR range directed towards a biological tissue by visualizing the intensity of optical radiation backscattered by the biological tissue. The basal membrane of said biological tissue, which separates the epithelium from an underlying stroma, is identified in the acquired image and diagnostics is performed on basis of the form of the basal membrane. For diagnostics of biological tissue lining the surface of cavities and internal organs of a patient a miniature optical fiber probe is inserted into the patient's cavity. The probe may be placed at a distal end of an endoscope instrumental channel.Type: GrantFiled: April 18, 2003Date of Patent: September 27, 2005Assignee: Imalux CorporationInventors: Valentin M. Gelikonov, Grigory V. Gelikonov, Natalia D. Gladkova, Natalia M. Shahova, Felix J. Feldchtein, Alexander M. Sergeev
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Patent number: 6903854Abstract: The present invention relates to the analysis of the internal structures of objects using optical means. According to the invention there were designed an apparatus suited for optical coherence tomography (OCT), an optical fiber lateral scanner (15), which is a part of said apparatus and is incorporated into an optical fiber probe (8), and a method for studying biological tissue in vivo, which allows for making a diagnostics of the biological tissue under study on basis of the state of the basal membrane (46). The moving part of lateral scanner (15) of sampling arm (4) of interferometer (2) is arranged comprising a current conductor (19), which envelopes a magnetic system (17) in the area of one of its poles (25) and an optical fiber (13), which is rigidly fastened to current conductor (19), whereas optical fiber (13) serves as a flexible cantilever, allowing to miniaturize the optical fiber probe (8).Type: GrantFiled: April 18, 2003Date of Patent: June 7, 2005Assignee: Imalux CorporationInventors: Valentin M. Gelikonov, Grigory V. Gelikonov, Natalia D. Gladkova, Natalia M. Shahova, Felix J. Feldchtein, Alexander M. Sergeev
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Publication number: 20030206321Abstract: The present invention relates to the analysis of the internal structures of objects using optical means. According to the invention there were designed an apparatus suited for optical coherence tomography (OCT), an optical fiber lateral scanner (15), which is a part of said apparatus and is incorporated into an optical fiber probe (8), and a method for studying biological tissue in vivo, which allows for making a diagnostics of the biological tissue under study on basis of the state of the basal membrane (46). The moving part of lateral scanner (15) of sampling arm (4) of interferometer (2) is arranged comprising a current conductor (19), which envelopes a magnetic system (17) in the area of one of its poles (25) and an optical fiber (13), which is rigidly fastened to current conductor (19), whereas optical fiber (13) serves as a flexible cantilever, allowing to miniaturize the optical fiber probe (8).Type: ApplicationFiled: April 18, 2003Publication date: November 6, 2003Inventors: Valentin M. Gelikonov, Grigory V. Gelikonov, Natalia D. Gladkova, Natalia M. Shahova, Felix I. Feldchtein, Alexander M. Sergeev
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Publication number: 20030174339Abstract: The present invention relates to the study of internal structure of objects by optical means. One modification of the invention presents a bi-directional optical path for the low coherent optical radiation directed to the sample, i.e. a bi-directional sampling arm, and a unidirectional optical path for the low coherent reference optical radiation, i.e. a unidirectional reference arm. This makes splitting and mixing ratios completely independent, the latter providing for optimal power management. Another modification of the invention presents a bi-directional optical path for the low coherent optical radiation directed to the sample, i.e. a bi-directional sampling arm, and two unidirectional reference beams directed along a reference path designed as a loop. One of the reference beams propagates clockwise and the other propagates counterclockwise in the reference loop.Type: ApplicationFiled: February 14, 2003Publication date: September 18, 2003Inventors: Felix I. Feldchtein, Paul G. Amazeen, Grigory V. Gelikonov, Valentin M. Gelikonov
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Patent number: 6608684Abstract: The present invention relates to the analysis of the internal structures of objects using optical means. According to the invention there were designed an apparatus suited for optical coherence tomography (OCT), an optical fiber lateral scanner (15), which is a part of said apparatus and is incorporated into an optical fiber probe (8), and a method for studying biological tissue in vivo, which allows for making a diagnostics of the biological tissue under, study on basis of the state of the basal membrane (46). The moving part of lateral scanner (15) of sampling arm (4) of interferometer (2) is arranged comprising a current conductor (19), which envelopes a magnetic system (17) in the area of one of its poles (25) and an optical fiber (13), which is rigidly fastened to current conductor (19), whereas optical fiber (13) serves as a flexible cantilever, allowing to miniaturize the optical fiber probe (8).Type: GrantFiled: December 1, 2000Date of Patent: August 19, 2003Assignee: Imalux CorporationInventors: Valentin M. Gelikonov, Grigory V. Gelikonov, Natalia D. Gladkova, Natalia M. Shahova, Felix I. Feldchtein, Alexander M. Sergeev
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Patent number: 5867268Abstract: The invention is related to technical physics, in particular to devices for investigating the internal structure of objects and can be used in medicine for diagnostics of human organs and systems, in particular for optical coherence tomography and in technical diagnostics, for example technological process control. The invention relates to the creation of an optical-fiber interferometer, which, being used in a device for optical coherence tomography, allows one to investigate media with short time of changing of optical characteristics or its position relative to the optical probe, for example biotissues in vivo. The invention also relates to the creation of a piezoelectric modulator, suitable for use in the interferometer and for providing the necessary scanning depth in the mentioned media.Type: GrantFiled: October 3, 1997Date of Patent: February 2, 1999Assignee: Optical Coherence Technologies, Inc.Inventors: Valentin M. Gelikonov, Grigory V. Gelikonov, Natalia D. Gladkova, Vladimir I. Leonov, Felix I. Feldchtein, Alexander M. Sergeev, Yakov I. Khanin
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Patent number: 5835642Abstract: The invention is related to technical physics, in particular to devices for investigating the internal structure of objects and can be used in medicine for diagnostics of human organs and systems, in particular for optical coherence tomography and in technical diagnostics, for example technological process control. The invention relates to the creation of an optical-fiber interferometer, which, being used in a device for optical coherence tomography, allows one to investigate media with short time of changing of optical characteristics or its position relative to the optical probe, for example biotissues in vivo. The invention also relates to the creation of a piezoelectric modulator, suitable for use in the interferometer and for providing the necessary scanning depth in the mentioned media.Type: GrantFiled: March 3, 1997Date of Patent: November 10, 1998Assignee: Optical Coherence Technologies, Inc.Inventors: Valentin M. Gelikonov, Grigory V. Gelikonov, Natalia D. Gladkova, Vladimir I. Leonov, Felix I. Feldchtein, Alexander M. Sergeev, Yakov I. Khanin