Patents by Inventor Lingfeng Yu

Lingfeng Yu 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).

  • Patent number: 10779721
    Abstract: An optical coherence tomography (OCT) system and method for cross view imaging using at least two B-scan images transformed and coupled to each other at an angle to generate a cross view image.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: September 22, 2020
    Assignee: Alcon Inc.
    Inventors: Mauricio Jochinsen, Hugang Ren, Lingfeng Yu
  • Patent number: 10765315
    Abstract: Systems and methods for high-resolution, wide-angle viewing of a retina of an eye using an ophthalmic microscope that can view a high-resolution image of a retina formed using a wide field of view optical system. A wide field of view optical system can involve a first lens having a diffractive surface on at least one surface and a second lens housing in a shared housing. A wide field of view optical system can involve one or more lens formed from an optical grade polymer and manufactured at a cost that allows the lens to be disposable.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: September 8, 2020
    Assignee: Alcon Inc.
    Inventors: Valentina Doushkina, Lingfeng Yu
  • Patent number: 10694940
    Abstract: A method of automatically detecting a retinal feature using an ophthalmic imaging system and automatically providing at least one of an audio, visual, and tactile indication of the detected retinal feature to a user.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: June 30, 2020
    Assignee: Alcon Inc.
    Inventors: Hugang Ren, Lingfeng Yu
  • Patent number: 10533838
    Abstract: The present disclosure provides a visualization system for performing optimized optical coherence tomography (OCT) by determining the absolute distance between the OCT source and a sample. The present disclosure also provides a method for optimizing OCT, which includes determining an absolute distance between the OCT source and a sample using data relating to the focal length or position of an autofocus imager lens.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: January 14, 2020
    Assignee: Novartis AG
    Inventors: Hugang Ren, Lingfeng Yu
  • Publication number: 20190388274
    Abstract: Apparatuses, systems, and methods for treating tissue abnormalities are disclosed. The tissue may be visualized for determining a presence of one or more abnormalities contained therein. Imaging data obtained by visualization may be used to determine the presence of one or more abnormalities. Each of the detected abnormalities may be identified and a treatment plan developed for treating the abnormalities. Treatment may be delivered to the abnormalities according to the treatment plan.
    Type: Application
    Filed: September 4, 2019
    Publication date: December 26, 2019
    Inventors: Michael John Claus, Robert Sanchez, Tammo Heeren, Argelio Michael Olivera, Michael Papac, Lingfeng Yu, Hugang Ren
  • Publication number: 20190346253
    Abstract: The present disclosure provides a visualization system for performing optimized optical coherence tomography (OCT) by determining the absolute distance between the OCT source and a sample. The present disclosure also provides a method for optimizing OCT, which includes determining an absolute distance between the OCT source and a sample using data relating to the focal length or position of an autofocus imager lens.
    Type: Application
    Filed: July 23, 2019
    Publication date: November 14, 2019
    Inventors: Hugang Ren, Lingfeng Yu
  • Patent number: 10408601
    Abstract: The present disclosure provides a visualization system for performing optimized optical coherence tomography (OCT) by determining the absolute distance between the OCT source and a sample. The present disclosure also provides a method for optimizing OCT, which includes determining an absolute distance between the OCT source and a sample using data relating to the focal length or position of an autofocus imager lens.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: September 10, 2019
    Assignee: Novartis AG
    Inventors: Hugang Ren, Lingfeng Yu
  • Patent number: 10409051
    Abstract: A method and system for extracting the zoom level of a microscope is disclosed. The method includes capturing a reference image; recording a first zoom level corresponding to a first magnification at which the reference image is captured; capturing a second image; determining a second zoom level by comparing the second image and the reference image, the second zoom level corresponding to a second magnification at which the second image is captured; and recording the second zoom level at a location accessible by a microscope application.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: September 10, 2019
    Assignee: Novartis AG
    Inventors: Hugang Ren, Lingfeng Yu, Tammo Heeren
  • Publication number: 20190212533
    Abstract: An ophthalmic surgical microscope includes a beam coupler positioned along an optical path of the surgical microscope between a first eyepiece and magnifying/focusing optics, the beam coupler operable to direct the OCT imaging beam along a first portion of the optical path of the surgical microscope between the beam coupler and a patient's eye (an OCT image being generated based on a reflected portion of the OCT imaging beam). The surgical microscope additionally includes a real-time data projection unit operable to project the OCT image generated by the OCT system and a beam splitter positioned along the optical path of the surgical microscope between a second eyepiece and the magnifying/focusing optics. The beam splitter is operable to direct the projected OCT image along a second portion of the optical path of the surgical microscope between the beam splitter and the second eyepiece such that the projected OCT image is viewable through the second eyepiece.
    Type: Application
    Filed: October 24, 2017
    Publication date: July 11, 2019
    Inventors: TAMMO HEEREN, HUGANG REN, VADIM SHOFMAN, LINGFENG YU
  • Publication number: 20190183335
    Abstract: The present disclosure relates to an ophthalmic surgical microscope including a magnifying lens positioned in an optical path, a reflection inverter positioned in the optical path, and an ocular lens or eyepiece positioned in the optical path. The reflection inverter may include A Schmidt-Pechan prism or a pair of inverting lenses and a reduction lens.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 20, 2019
    Inventors: Lingfeng Yu, Valentina Doushkina
  • Publication number: 20190175402
    Abstract: Both visible and IR cameras are integrated without an increase in an optical stack height of a surgical microscope used for ophthalmic surgery. The IR camera may be used to directly and intraoperatively capture a scanning OCT measurement beam, which uses NIR light that is invisible to the human eye. An IR image from the IR camera taken from the same surgical field as displayed intraoperatively to a user of the surgical microscope may be displayed in an ocular to the user, enabling visualization of a location of an OCT scan along with actual visible images of the surgical field.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 13, 2019
    Inventors: MARTIN EIL, MAURICIO JOCHINSEN, HUGANG REN, LINGFENG YU
  • Patent number: 10299671
    Abstract: A Slit-lamp-or-Microscope-Integrated-OCT-Refractometer system includes an eye-visualization system, configured to provide a visual image of an imaged region in an eye; an Optical Coherence Tomographic (OCT) imaging system, configured to generate an OCT image of the imaged region; a refractometer, configured to generate a refractive mapping of the imaged region; and an analyzer, configured to determine refractive characteristics of the eye based on the OCT image and the refractive mapping, wherein the refractometer and the OCT imaging system are integrated into the eye visualization system.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: May 28, 2019
    Assignee: Novartis AG
    Inventors: Alexander N. Artsyukhovich, Z. Aras Aslan, Lingfeng Yu, Mikhail Boukhny
  • Patent number: 10285584
    Abstract: En face or 3D volumetric OCT imaging during ophthalmic surgery may be performed with an OCT scanning controller that interfaces to an OCT scanner used with a surgical microscope. The OCT scanner may generate en face images before and after surgical operations, such as retinal membrane peeling, are performed. Using digital subtraction on the en face images, an overlay image indicative of the changes from the surgical operations to the eye may be generated and overlaid onto an optical image displayed to a user of the surgical microscope.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: May 14, 2019
    Assignee: Novartis AG
    Inventors: Steven T. Charles, Lingfeng Yu, Hugang Ren
  • Publication number: 20190069776
    Abstract: A method of automatically detecting a retinal feature using an ophthalmic imaging system and automatically providing at least one of an audio, visual, and tactile indication of the detected retinal feature to a user.
    Type: Application
    Filed: November 1, 2018
    Publication date: March 7, 2019
    Inventors: Hugang Ren, Lingfeng Yu
  • Publication number: 20180368678
    Abstract: Systems and methods for high-resolution, wide-angle viewing of a retina of an eye using an ophthalmic microscope that can view a high-resolution image of a retina formed using a wide field of view optical system. A wide field of view optical system can involve a first lens having a diffractive surface on at least one surface and a second lens housing in a shared housing. A wide field of view optical system can involve one or more lens formed from an optical grade polymer and manufactured at a cost that allows the lens to be disposable.
    Type: Application
    Filed: June 19, 2018
    Publication date: December 27, 2018
    Inventors: Valentina Doushkina, Lingfeng Yu
  • Publication number: 20180360653
    Abstract: A surgical system uses a surgical tool as a control input. A tracking unit tracks a motion of the surgical tool, and a processing unit for processes the motion of the surgical tool to obtain a temporal spatial information of the surgical tool. The control unit further comprises a control input unit with a number of control commands. The control input unit associates the temporal spatial information of the surgical tool with a corresponding control command.
    Type: Application
    Filed: August 7, 2018
    Publication date: December 20, 2018
    Inventors: Hugang Ren, Lingfeng Yu
  • Patent number: 10143370
    Abstract: A method of automatically detecting a retinal feature using an ophthalmic imaging system can include: acquiring an optical coherence tomography (OCT) image of a retina; segmenting the OCT image; generating a metric based on the segmented OCT image; detecting the retinal feature based on the metric; and providing an indication of the detected retinal feature to a user. An ophthalmic imaging system can include: an OCT system configured to acquire an image of a retina; a computing device coupled to the OCT system and configured to segment the image, generate a metric based on the segmented image, and detect a retinal feature based on the metric; and an audio/visual/tactile device in communication with the computing device and configured to provide at least one of an audio, visual, and tactile indication of the detected retinal feature to a user.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: December 4, 2018
    Assignee: Novartis AG
    Inventors: Hugang Ren, Lingfeng Yu
  • Publication number: 20180317764
    Abstract: An optical coherence tomography (OCT) apparatus includes an optical source module comprising two or more selectable optical sources or an optical source configured to selectively operate in two or more source operating modes, or a combination of both, and further comprises an OCT engine coupled to the optical source module, the OCT engine comprising an OCT interferometer. The OCT apparatus still further includes a mode-switching optics module coupled to the OCT engine and comprising one or more swappable, selectable, or adjustable optical components, such that the mode-switching optics module is configured to selectively provide two or more optical configurations for the optical path between the OCT engine and an imaged object, according to two or more corresponding operating modes.
    Type: Application
    Filed: April 20, 2018
    Publication date: November 8, 2018
    Inventors: Craig Bender, Michael Papac, Lingfeng Yu
  • Publication number: 20180275386
    Abstract: A system and method for a reconfigurable surgical microscope is disclosed. The reconfigurable microscope includes an eyepiece; a relay lens system optically coupled to the eyepiece; a zoom lens system optically coupled to the eyepiece and the relay lens system; an illumination unit; and an objective lens capable of being repositioned between a first objective lens position and a second objective lens position, the first objective lens position comprising a slot located between the zoom lens system and the illumination unit and the second objective lens position comprising a slot located such that the illumination unit is located between the second objective lens position and the zoom lens system.
    Type: Application
    Filed: March 19, 2018
    Publication date: September 27, 2018
    Inventors: Lingfeng Yu, Craig Bender
  • Publication number: 20180199809
    Abstract: A method and system provide an optical coherence tomography system including a light source, an interferometric system, a processor and a memory. The interferometric system is optically coupled with the light source and includes at least one movable scanning mirror. The processor and memory are coupled with the interferometric system. The processor executes instructions stored in the memory to cause the movable scanning mirror to scan a plurality of points in a sample in at least one pattern. The at least one pattern is based on at least one of at least one Lissajous curve and at least one Spirograph curve.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 19, 2018
    Inventors: ALEXANDER N. ARTSYUKHOVICH, Z. ARAS ASLAN, HUGANG REN, LINGFENG YU, CHENGXIN ZHOU