Patents by Inventor Vladislav NIKITIN
Vladislav NIKITIN 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: 11578965Abstract: An implementation cost of a line-scan optical coherence tomography (OCT) apparatus is reduced by miniaturizing a scanning mirror and using a light source with relaxed requirement in intensity uniformity. The mirror reflects a probe light beam to different parts of a sample for line-scanning the sample. A line-compressing lens compresses the probe light beam's cross-sectional length before the beam reaches the mirror, allowing the mirror to be miniaturized to reflect only the compressed beam. In generating a linear light beam that gives the probe light beam, a cascade of collimating lens, Powell lens and focusing lens generates the linear light beam from a raw light beam of a point source. A slit further filters the linear light beam to remove a peripheral portion thereof such that the linear light beam is substantially uniform in intensity even if an asymmetrical divergent light source is used.Type: GrantFiled: May 26, 2021Date of Patent: February 14, 2023Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Vladislav Nikitin, Pingping Feng, Ka Shing Anthony Yuen, Sifan Xie, Xinliang Li
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Publication number: 20220381551Abstract: An implementation cost of a line-scan optical coherence tomography (OCT) apparatus is reduced by miniaturizing a scanning mirror and using a light source with relaxed requirement in intensity uniformity. The mirror reflects a probe light beam to different parts of a sample for line-scanning the sample. A line-compressing lens compresses the probe light beam's cross-sectional length before the beam reaches the mirror, allowing the mirror to be miniaturized to reflect only the compressed beam. In generating a linear light beam that gives the probe light beam, a cascade of collimating lens, Powell lens and focusing lens generates the linear light beam from a raw light beam of a point source. A slit further filters the linear light beam to remove a peripheral portion thereof such that the linear light beam is substantially uniform in intensity even if an asymmetrical divergent light source is used.Type: ApplicationFiled: May 26, 2021Publication date: December 1, 2022Inventors: Vladislav Nikitin, Pingping Feng, Ka Shing Anthony Yuen, Sifan Xie, Xinliang Li
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Patent number: 11287626Abstract: The invention provides a chromatic confocal system for inspecting an object. The system comprises a first light modulator for providing a spatially modulated light beam arranged to project on one or more parts of the object to form a reflected light beam carrying image information of the one or more projected parts of the object; a second light modulator for spatially filtering the reflected light beam to form a light beam carrying filtered image information of the one or more projected parts of the object; wherein operation of the first light modulator and the second light modulator is synchronized such that the spatial filtering of the second light modulator varies in concert with variations in the spatial modulation of the first light modulator.Type: GrantFiled: May 17, 2019Date of Patent: March 29, 2022Assignee: Hong Kong Applied Science and Technology Research Institute Comoanv LimitedInventors: Vladislav Nikitin, Changli Wu, Qi Lang
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Publication number: 20200363619Abstract: The invention provides a chromatic confocal system for inspecting an object. The system comprises a first light modulator for providing a spatially modulated light beam arranged to project on one or more parts of the object to form a reflected light beam carrying image information of the one or more projected parts of the object; a second light modulator for spatially filtering the reflected light beam to form a light beam carrying filtered image information of the one or more projected parts of the object; wherein operation of the first light modulator and the second light modulator is synchronized such that the spatial filtering of the second light modulator varies in concert with variations in the spatial modulation of the first light modulator.Type: ApplicationFiled: May 17, 2019Publication date: November 19, 2020Inventors: Vladislav Nikitin, Changli Wu, Qi Lang
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Patent number: 10634618Abstract: The invention provides an apparatus for inspecting a light transmissible optical component. The apparatus comprises an image capturing module arranged on a first side of a support configured to hold a light transmissible optical component whilst it is being inspected. The apparatus includes an illumination device configured to shape light from a light source and to illuminate a selected portion of a surface of said light transmissible optical component with said shaped light to enable the image capturing module to capture any of a bright field image, a dark field image, or a combined bright field and dark field image of the light transmissible optical component being held by the support.Type: GrantFiled: January 23, 2018Date of Patent: April 28, 2020Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Vladislav Nikitin, Wang Fei Ng, Ka Kit Wong, Xiaozhe Ren, Ying Liu
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Patent number: 9970884Abstract: An apparatus for inspecting a light transmissive optical component comprises an image capturing module arranged on a first side of a support configured to hold a light transmissive optical component while it is being inspected. One or more first illuminating means are arranged on the first side of the support and adapted to illuminate from a first side of a light transmissive optical component held by the support. One or more second illuminating means are arranged on a second side of the support and adapted to illuminate from a second side of the light transmissive optical component held by the support, the second side of the support opposing the first side of said support.Type: GrantFiled: April 28, 2017Date of Patent: May 15, 2018Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Vladislav Nikitin, Anna Liu, Changli Wu
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Patent number: 9778556Abstract: Embodiments of the present invention provide an imaging system, including: a first polarization element having a first polarization direction; a second polarization element having a second polarization direction; a third polarization element, where the third polarization element has multiple areas that respectively correspond to multiple pixel positions, each area in the multiple areas consists of a first semi-area and a second semi-area; a first projection device, projecting an image onto the multiple areas by using the first polarization element and based on the multiple pixel positions; and a second projection device, projecting an image onto the multiple areas by using the second polarization element and based on the multiple pixel positions. In the embodiments of the present invention, images from multiple views may be presented, by using a polarization element, in areas corresponding to pixel positions, which, therefore, can improve imaging resolution.Type: GrantFiled: November 9, 2015Date of Patent: October 3, 2017Assignee: Huawei Technologies Co., Ltd.Inventors: Maxim Khromov, Nikolay Petrov, Vladislav Nikitin, Qingpeng Xie
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Publication number: 20160139498Abstract: Embodiments of the present invention provide an imaging system, including: a first polarization element having a first polarization direction; a second polarization element having a second polarization direction; a third polarization element, where the third polarization element has multiple areas that respectively correspond to multiple pixel positions, each area in the multiple areas consists of a first semi-area and a second semi-area; a first projection device, projecting an image onto the multiple areas by using the first polarization element and based on the multiple pixel positions; and a second projection device, projecting an image onto the multiple areas by using the second polarization element and based on the multiple pixel positions. In the embodiments of the present invention, images from multiple views may be presented, by using a polarization element, in areas corresponding to pixel positions, which, therefore, can improve imaging resolution.Type: ApplicationFiled: November 9, 2015Publication date: May 19, 2016Inventors: Maxim KHROMOV, Nikolay PETROV, Vladislav NIKITIN, Qingpeng XIE