Including Eye Photography Patents (Class 351/206)
  • Patent number: 9895057
    Abstract: Systems and methods for performing visual field testing using light field displays are described. The light field display (201, 202; 801; 504; 601-604; 704; 801), that can correct for the focus and cylindrical refractive error of the subject, can be used to perform a variety of visual field testing strategies by rendering visual stimuli to the eye (203). The light field display may be included near the subject's eye, or reimaged by a relay optical system (802). Several embodiments of head and arm mounted systems (711; 704) including a near eye light field display (704) are presented.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: February 20, 2018
    Assignee: CARL ZEISS MEDITEC, INC.
    Inventor: Alexandre R. Tumlinson
  • Patent number: 9898816
    Abstract: A diagnosis assisting apparatus includes a display, an imaging unit configured to image a subject, a line of sight detecting unit configured to detect a line of sight direction of the subject from a picked-up image imaged by the imaging unit, a point of view detecting unit configured to detect a point of view of the subject in a display region of the display based on the line of sight direction, and an output controller configured to display a diagnostic image including a natural image and a geometrical image, and the point of view detecting unit detects the point of view of the subject in a case where the diagnostic image is displayed.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: February 20, 2018
    Assignee: JVC KENWOOD Corporation
    Inventors: Shuji Hakoshima, Katsuyuki Shudo, Masaru Ninomiya, Makoto Kito
  • Patent number: 9888844
    Abstract: A control apparatus includes an irradiation unit configured to irradiate a measurement object with a measuring beam, a restriction unit configured to restrict the measuring beam from being incident on the measurement object and to reflect or scatter the measuring beam, and a polarization control unit configured to control, based on the measuring beam reflected or scattered by the restriction unit, polarization of the measuring beam.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: February 13, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tomoyuki Makihira, Yoshihiko Iwase, Makoto Sato, Kazuhide Miyata, Hiroyuki Shinbata, Ritsuya Tomita, Daisuke Kibe
  • Patent number: 9883796
    Abstract: An ophthalmologic system comprising and eye tracker and an OCT system. A method of operating the ophthalmologic system comprises: providing data representing a placement of a first B-scan performed on an eye relative to the eye; performing a measurement on the eye using the eye tracker; determining a placement of the eye relative to the ophthalmologic system based on the measurement using the eye tracker; placing the eye relative to a reference placement of the OCT system based on the provided data and the determined placement; performing A-scans on the eye at at least three A-scan positions; determining a placement of a second B-scan relative to the OCT system based on at least one of the at least three A-scans and the provided data such that the second B-scan and the first B-scan have a substantially same placement relative to the eye; and generating a representation of the second B-scan.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: February 6, 2018
    Assignee: CARL ZEISS MEDITEC AG
    Inventors: Günter Meckes, Konstantinos Filippatos, Thomas Schuhrke, Christoph Hauger, Abouzar Eslami, Stefan Gräber, Christine Kochwagner, Carolin Schiele, Christopher Käsbach
  • Patent number: 9877649
    Abstract: Systems and methods are provided for performing a photorefractive assessment. The system comprises a computing device including an image-capturing device, a display device, and a computer application that is executable on the computing device and operable to perform a method including receiving input specifying subject information, capturing an image using the image-capturing device containing eye pupils of a subject, and analyzing the image captured to determine a distance between the subject and the image-capturing device using the subject information and predetermined interpupilary distance information. A remediation action may be performed if the distance determined is not within an appropriate distance range for the photorefractive assessment. An illuminance level of the environment may be analyzed using the image captured to determine whether lighting conditions are appropriate for performing the photorefractive assessment.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: January 30, 2018
    Assignee: Gobiquity, Inc.
    Inventors: John Michael Tamkin, Peter-Patrick de Guzman
  • Patent number: 9872616
    Abstract: Disclosed herein is a pupillary response scanning device and methods for use in performing swinging flashlight test, brightness saturation test, color discrimination test, and color blindness test. The device may include: a housing configured to provide a first isolated eye enclosure for a first eye and a second isolated eye enclosure for a second eye of a patient; one or more visible light sources, one or more infrared light sources, one or more imaging devices in each isolated eye enclosure; and a control system that may be configured for manipulating the visible light sources, infrared light sources and the imaging devices.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: January 23, 2018
    Inventors: Ehsan Daneshi Kohan, Yaser Mohammadian Roshan, Amirhossein Vejdani, Farzad Hamidi
  • Patent number: 9867532
    Abstract: An optical parameter of an eye is detected using an image collection apparatus that collects an image presented by a fundus. An imaging apparatus adjusts an imaging parameter of an optical path between an eye and the image collection apparatus, wherein the image collection apparatus obtains a clearest image that satisfies a defined clarity criterion or condition. An image processing apparatus processes the clearest image to obtain an optical parameter of the eye. The image of the fundus is captured, and an imaging parameter known in the optical path when the clearest image is captured is found, so that a direction currently being watched by the eye and a distance between the eye and a focusing point can be obtained through optical calculation. Consequently, a position of the focusing point of the eye can be determined precisely for a wide range of concurrent applications for eye control interaction.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: January 16, 2018
    Assignee: BEIJING ZHIGU RUI TUO TECH CO., LTD
    Inventors: Lin Du, Hongjiang Zhang
  • Patent number: 9861277
    Abstract: Interferometry-based methods and apparatus are presented for analyzing one or more wavefronts from a sample, in which the sample wavefronts are interfered with two or more reference wavefronts to produce two or more interferograms in a sufficiently short time period for the interferograms to be captured in a single exposure of an image capture device such as a CCD array. Each interferogram has a unique carrier frequency dependent on the angle between a respective pair of sample and reference wavefronts. In certain embodiments multiple sample and/or reference wavefronts are generated using scanning mirrors, while in other embodiments utilizing multi-wavelength beams multiple sample and/or reference wavefronts are generated with wavelength dispersive elements. The methods and apparatus are suitable for measuring aberrations at one or more positions on the retina of an eye.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: January 9, 2018
    Inventors: Trevor Bruce Anderson, Steven James Frisken, Grant Andrew Frisken, Armin Georg Segref
  • Patent number: 9854971
    Abstract: A system for visualization of eye anatomy includes at least one camera having a view vector along a first axis when in a first position, a housing to which the camera is coupled, wherein the housing engages the head of a patient such that the camera is positioned adjacent an eye of the patient, and an actuator that moves the camera from the first position to a second position with a view vector along a second axis that is offset from the first axis. A method of visualization of eye anatomy includes engaging a patient's head with a housing, positioning at least one camera coupled to the housing adjacent an eye, wherein the camera has a view vector along a first axis when in a first position, and moving the camera to a second position with a view vector along a second axis that is offset from the first axis.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: January 2, 2018
    Assignee: Sanovas Intellectual Property, LLC
    Inventors: Lawrence J. Gerrans, Charles N. Wang
  • Patent number: 9848770
    Abstract: A surgical imaging system is provided. The surgical imaging system includes a surgical microscope and a telecentric optical coherence tomography scanning unit configured to scan a sample through at least one optical component associated with the surgical microscope.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: December 26, 2017
    Assignee: The Cleveland Clinic Foundation
    Inventors: Justis P. Ehlers, Yuankai K. Tao, Sunil K. Srivastava
  • Patent number: 9844320
    Abstract: A method for creating a virtual 2D image of an object moving in a blood vessel includes the steps of: providing an imaging apparatus capable of acquiring 1D images. The imaging apparatus is communicatively coupled to a computer. Multiple 1D images of a substantially fixed footprint on a surface of an organ are acquired over a period of time. A virtual 2D image showing the object moving in the blood vessel is formed by combining by computer the multiple 1D images. The virtual 2D image can be displayed and/or saved to a non-volatile memory. A system to perform the method is also described. Another method for creating a virtual 1D image of an object moving in a blood vessel is also described.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: December 19, 2017
    Assignee: University of Rochester
    Inventor: Jesse Schallek
  • Patent number: 9844321
    Abstract: An ophthalmic surgical system comprises: a camera optically coupled to a surgical microscope; a virtual reality (VR) headset worn by a surgeon; and a VR data processing unit configured to communicate with the surgical microscope, the VR headset, and an ophthalmic surgical apparatus, wherein the VR data processing unit is configured to: project a real time video screen of video received from the camera into the VR headset; project a patient information screen into the VR headset to provide the patient information directly to the surgeon during ophthalmic surgery; project a surgical apparatus information screen into the VR headset; project a surgical apparatus input control screen into the VR headset to provide the surgeon with direct control over the surgical apparatus; and control which ones of the screens are visible in the VR headset based inputs indicating head movements of the surgeon as detected by the VR headset.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: December 19, 2017
    Assignee: Novartis AG
    Inventors: Johan Ekvall, Paul J. Essex, Kirk Todd
  • Patent number: 9844316
    Abstract: A corneal endothelial cell analysis method includes: a step of displaying a photographed image including endothelial cells of a cornea of an examinee's eye on a monitor; a step of setting, based on an operation signal from a user interface, regions of the endothelial cells for each or more than one of the cells with respect to the photographed image displayed on the monitor, the setting step including setting the endothelial cell regions on the one photographed image by use of setting modes including at least a first setting mode of setting the endothelial cell regions and a second setting mode different from the first setting mode; and a step of obtaining an analysis result on the endothelial cells of the examinee's eye based on the endothelial cell regions set by the first setting mode and the endothelial cell regions set by the second setting mode.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: December 19, 2017
    Assignee: NIDEK CO., LTD.
    Inventor: Yusuke Sakashita
  • Patent number: 9844319
    Abstract: An epiretinal membrane (ERM) visualization system includes an OCT system operable to generate an OCT image of a region of a patient's eye, the region of the patient's eye including an ERM. The ERM visualization system further includes an image processing unit operable to process the OCT image to identify the ERM by differentiating the ERM from other structures within the region of the patient's eye and generate an ERM map depicting one or more characteristics (including at least a location of a portion of the ERM within the region of the patient's eye) of the identified ERM. The ERM visualization system further includes a display operable to display the ERM map.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: December 19, 2017
    Assignee: Novartis AG
    Inventors: Michael J. Papac, Hugang Ren, Lingfeng Yu
  • Patent number: 9839351
    Abstract: A method of generating a tomographic image using optical coherence tomography includes: a data obtaining step of obtaining a plurality of pieces of tomographic image data each indicating a tomogram at substantially the same position of an object; a removing step of removing an outlier from the plurality of pieces of tomographic image data; a computation step of computing a motion contrast value based on the plurality of pieces of tomographic image data from which the outlier is removed; and a generation step of generating a motion contrast image of the object based on the motion contrast value.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: December 12, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Atsushi Goto
  • Patent number: 9833140
    Abstract: Portable corneal topographers and portable corneal topographer modules are disclosed. In one embodiment, a corneal topographer module comprises a housing having a first aperture and a second aperture formed therethrough; and a plurality of optical components disposed within the housing. The plurality of optical components are arranged to direct light generated by a light source through the first aperture to the cornea via a first optical channel when a cornea of a patient's eye is located adjacent to the first aperture; and direct reflected light from the cornea into the housing through the first aperture and to a light detector of a mobile device via a second optical channel when the corneal topographer module is mechanically coupled to the mobile device.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: December 5, 2017
    Assignee: SMART VISION LABS, INC.
    Inventor: Yaopeng Zhou
  • Patent number: 9826901
    Abstract: The present invention relates to an adaptor for a slit lamp microscope. According to one embodiment of the present invention, the invention provides the advantages of: facilitating the maintenance/repair of a slit lamp microscope since a camera member used for the slit lamp microscope is simply attached or detached; simply and easily inspecting and photographing a subject's eye; and obtaining a high-resolution video or image for the subject's eye at low costs.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: November 28, 2017
    Inventors: Dong Kwan Kim, Dong Sik Kim
  • Patent number: 9827066
    Abstract: Methods and systems for performing an ophthalmic surgical procedure include pulsed illumination of target tissue. The systems may include an illumination instrument arranged to illuminate tissue at a surgical site during the ophthalmic surgical procedure. A light source provides illumination to the illumination instrument for emission from the illumination instrument toward the surgical site. A controller communicates with the light source and activates the light source to provide illumination pulses at a frequency above the flickering perception in humans and with enough light for cameral exposure and human light perception. The light source pulses to minimize phototoxicity.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: November 28, 2017
    Assignee: NOVARTIS AG
    Inventor: Niels Alexander Abt
  • Patent number: 9826130
    Abstract: An infrared camera, comprising photosensitive element (101) capable of sensing infrared spectrum, gas discharge flash acting as flash light source (102), a first optical filter (103) filtering visible lights and allowing infrared light to transmit, and processing module (105) used to execute instructions, wherein the first optical filter is fixedly or removablely disposed in the emitted light path of the flash light source. Due to gas discharge flash filtering visible lights and acting as infrared light source, the camera could provide infrared lighting capability far better than infrared LED, improving the nighttime infrared photographing quality.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: November 21, 2017
    Assignee: Boly Media Communications (Shenzhen) Co., Ltd
    Inventors: Xiaoping Hu, Xia Shen
  • Patent number: 9820697
    Abstract: A lesion determination apparatus includes: a number-of-images acquiring unit configured to acquire and record, on occurrence of a direction change that is either a first state in which a second operation instruction is received immediately after receipt of a first operation instruction or a second state in which the first operation instruction is received immediately after a receipt of the second operation instruction, a number of one-directionally viewed images that is either a number of tomography images continuously viewed in response to continuous first operation instructions including the first operation instruction in the first state or a number of tomography images continuously viewed in response to continuous second operation instructions including the second operation instruction in the second state; and a locality determining unit configured to determine whether the object part is a focal lesion or a diffuse lesion based on a change in the number of one-directionally viewed images.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: November 21, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Kazutoyo Takata, Kazuki Kozuka, Kenji Kondo, Hirohiko Kimura, Toyohiko Sakai
  • Patent number: 9820646
    Abstract: An image processing apparatus converts an intensity distribution of at least one of a plurality of regions of a tomographic image of an eye by using an amount of conversion which is greater than an amount of conversion used to convert an intensity distribution of another one of the plurality of regions, the tomographic image being obtained by performing tomographic imaging on the eye by using optical interference.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: November 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Uchida, Yukio Sakagawa, Krzysztof Marek Piotrowski
  • Patent number: 9820650
    Abstract: An image processing apparatus obtains a moving image of an eye area, identifies a region of blood cells in the obtained moving image, and determines the number of determined regions of blood cells.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: November 21, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihito Uji, Shigeta Arichika, Hiroshi Imamura
  • Patent number: 9820645
    Abstract: The present invention relates to an ophthalmologic apparatus for acquiring depth information of an eye including a light source; a measurement optical path guiding measurement light; a reference optical path generating reference light; and a detector generating a detection signal containing an interference signal of the measurement light via the measurement optical path and the reference light coming from the reference optical path; an actuator driving at least part of the interference optical system to vary an optical path length difference between the measurement optical path and the reference optical path; a standard optical system including optical members disposed corresponding to the optical path length differences in one of the measurement optical path and the reference optical path. Optical members guide part of the measurement light or the reference light to the detector.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: November 21, 2017
    Assignee: NIDEK CO., LTD.
    Inventors: Masakazu Endo, Masaaki Hanebuchi, Yasuhiro Furuuchi
  • Patent number: 9820649
    Abstract: A three-dimensional tomographic image (B) is formed which is composed of a plurality of two-dimensional tomographic images obtained by scanning an ocular fundus. A contour of a certain 2D region (M1, M2, M3, M4) in the tomographic image is determined for each tomographic image, and the volume of a certain 3D region is calculated through correcting each area of the certain 2D region defined by the determined contour or its accumulated value using an image correction coefficient in accordance with the diopter of the subject's eye. Even for subjects' eyes of different diopters, the influence of the diopter correction is eliminated and a quantitative comparison of subjects' eyes of different diopters is possible.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: November 21, 2017
    Assignee: KOWA COMPANY, LTD.
    Inventors: Toshiaki Nakagawa, Yoshihiro Kakutani, Masaharu Mizuochi
  • Patent number: 9814381
    Abstract: An ophthalmic apparatus is capable of communicating with a PDA device provided with a display unit and includes a main body that includes an image-capturing unit, the image-capturing unit obtaining a moving image of an eye to be examined (target eye) based on light returned from the target eye which is illuminated, the moving image of the target eye used by the ophthalmic apparatus for obtaining, based on an examination of the target eye, information regarding the target eye, a driving unit that drives the main body, a transmission unit that transmits, before the information regarding the target eye is obtained, a moving image signal of the obtained moving image to the PDA device, a reception unit that receives a control signal from the PDA device during transmission of the moving image signal, and a control unit that controls the driving unit based on the received control signal.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: November 14, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Koji Uchida
  • Patent number: 9814385
    Abstract: The invention relates to an ophthalmoscope comprising a camera and an associated illumination device; the invention further concerns a novel method for processing a plurality of images of the eye taken by said device; and software, typically included in said ophthalmoscope, for executing said method.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: November 14, 2017
    Assignees: London School of Hygiene and Tropical Medicine, The Greater Glasgow Health Board, The University Court of the University of St Andrews
    Inventors: Stewart Jordan, Mario Giardini, Iain Livingstone, Andrew Bastawrous
  • Patent number: 9808150
    Abstract: An image processing apparatus includes: a tomographic image acquisition unit that acquires a first tomographic image of a subject's eye captured at a first time point that is a past time point; a tomographic image capturing unit that acquires a second tomographic image of the subject's eye captured at a second time point later than the first time point; and an image display control unit that, if one image capturing region of an image capturing region of the first tomographic image and an image capturing region of the second tomographic image is larger than the other image capturing region, performs control to provide, on an image display portion, a display of both a tomographic image of only a partial region of the one image capturing region which is a corresponding region corresponding to the other image capturing region and a tomographic image of the other image capturing region.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: November 7, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Tanaka, Keisuke Oyaizu
  • Patent number: 9808153
    Abstract: A method, controller, and medium to control an adaptive optics scanning laser ophthalmoscope. Receiving from the ophthalmoscope a plurality of wavefront elements. Each element may be associated with an area of a beam of light received from a fundus. Each element includes shape data. The shape data represents a shape of a wavefront in a area of the beam. Each element includes status data. The status data is a confidence indicator of ability of the shape data to represent the shape of the wavefront with a particular level of accuracy. Calculating control data based on the shape data in the wavefront data and local gain. The local gain includes local gain elements. Each local gain elements is adjusted based on status data. Using the control data to adjust a shape of an illumination wavefront of an illumination beam used to illuminate the fundus.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: November 7, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koji Nozato
  • Patent number: 9808152
    Abstract: An anterior ocular segment optical coherence tomographic imaging device and an anterior ocular segment optical coherence tomographic imaging method that can accurately analyze the shape of a crystalline lens by identifying the boundary of each layer of the crystalline lens in a tomographic image of an anterior ocular segment of a subject's eye, which is taken by optical coherence tomography. A layer boundary detector calculates brightness gradients from brightness values in a tomographic image of an anterior ocular segment of a subject's eye, which is taken by optical coherence tomography, in a depth direction of the tomographic image from a cornea to a retina, detect edges b1, b2, b3, and b4 that are larger than a predetermined threshold, and identify a boundary of each layer of the crystalline lens L from positions of the edge b1, b2, b3, and b4.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: November 7, 2017
    Assignee: Tomey Corporation
    Inventors: Keiichiro Okamoto, Risa Higashita, Fushi Li, Makoto Kojima
  • Patent number: 9811159
    Abstract: Aspects of the present invention relate to methods and systems for imaging, recognizing, and tracking of a user's eye that is wearing a HWC. Aspects further relate to the processing of images reflected from the user's eye and controlling displayed content in accordance therewith.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: November 7, 2017
    Assignee: Osterhout Group, Inc.
    Inventors: Edward H. Nortrup, John N. Border, Ralph F. Osterhout, John D. Haddick, Robert Michael Lohse
  • Patent number: 9804389
    Abstract: An eye tracker having a waveguide for propagating illumination light towards an eye and propagating image light reflected from at least one surface of an eye, a light source optically coupled to the waveguide, and a detector optically coupled to the waveguide. Disposed in the waveguide is at least one grating lamina for deflecting the illumination light towards the eye along a first waveguide path and deflecting the image light towards the detector along a second waveguide path.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: October 31, 2017
    Assignee: DIGILENS, INC.
    Inventors: Milan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
  • Patent number: 9801537
    Abstract: An eye fundus image photographing device and method that can acquire images of higher quality. The eye fundus image photographing device photographs a wide-angle eye fundus image on an appropriate exposure condition with respect to a peripheral area different from an optic disk region of an eye fundus area and detects the optic disk region from the wide-angle eye fundus image. Moreover, based on the detection result of the optic disk region, the eye fundus image photographing device photographs a narrow-angle eye fundus image which assumes an area of the optic disk region as an object, on an appropriate exposure condition with respect to the area of the optic disk region. Further, the eye fundus image photographing device generates a synthetic eye fundus image of a high dynamic range by synthesizing the wide-angle eye fundus image and the narrow-angle eye fundus image.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: October 31, 2017
    Assignee: SONY CORPORATION
    Inventor: Seiji Kobayashi
  • Patent number: 9795290
    Abstract: Ocular surface interferometry (OSI) devices, systems, and methods are disclosed for peak detection and/or determining stabilization of an ocular tear film. Embodiments disclosed herein also include various image capturing and processing methods and related systems for providing various information about a patient's ocular tear film (e.g., the lipid and aqueous layers) and a patient's meibomian glands that can be used to analyze tear film layer thickness(es) (TFLT), and related characteristics as it relates to dry eye.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: October 24, 2017
    Assignee: TearScience, Inc.
    Inventors: Stephen M. Grenon, Scott Liddle, Donald R. Korb
  • Patent number: 9795291
    Abstract: An optical coherence tomography device includes: an OCT optical system configured to obtain a OCT signal; a front observation optical system configured to obtain a front image of the test substance; and a controller is configured to: control the OCT optical system to obtain first temporally different OCT signals with respect to the test substance; control the front observation optical system to obtain a first front image of the test substance at the time the first OCT signals are obtained; control the front observation optical system to obtain a second front image of the test substance after that; determine whether or not the plurality of first OCT signals are good based on a positional deviation between the first and second front images; and obtain motion contrast data of the test substance when it is determined that the plurality of first OCT signals are good.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: October 24, 2017
    Assignee: NIDEK CO., LTD.
    Inventors: Norimasa Satake, Yukihiro Higuchi, Naoki Takeno
  • Patent number: 9788713
    Abstract: Systems and methods for modifying an eye including a light source with light elements, a photodetector producing a signal representing images of the light elements and corresponding to locations on an ocular surface, an optical system directing light from the light elements reflected by the ocular surface onto the photodetector, a memory including code for processing the signal, and a processor for executing the code and outputting shape data for use in calculating a treatment plan for the eye. The code includes instructions for determining the shape data based on a combination of zonal reconstruction and polynomial fitting using the plurality of images.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: October 17, 2017
    Assignee: AMO Wavefront Sciences LLC.
    Inventor: Stephen W. Farrer
  • Patent number: 9788718
    Abstract: A surgical microscope for imaging structures of an eye includes: a front optical unit, an illumination device which has an illumination-radiation-emitting illumination source and which illuminates the retina of the eye with an illumination spot via an illumination beam path which extends through the front optical unit, a camera and an adjustable camera optical unit disposed upstream thereof, an imaging beam path which extends through the front optical unit and the camera optical unit, and a control device which controls the camera optical unit and sets the latter in such a way that the retina of the eye in the region of the illumination spot is imaged on the camera. The control device varies a focusing state of the camera optical unit and, as a result thereof, records a plurality of images of the retina in the region of the illumination spot, the images being focused in different depth planes, and establishes a refractive value of the eye from these images.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: October 17, 2017
    Assignee: Carl Zeiss Meditec AG
    Inventors: Christoph Hauger, Artur Hoegele, Peter Reimer, Holger Matz, Joachim Steffen
  • Patent number: 9788717
    Abstract: A method of reducing jitter error in a laser scanning system adapted to produce a scanned image including a number of lines of an object. The method includes the steps of providing a reference object arranged such that the scanned image produced by the laser scanning system includes a reference image of the reference object, processing the reference image to calculate an error arising from non-repeatable displacement of the lines of the reference image, and adjusting at least one operating parameter of the laser scanning system in response to the calculated error.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: October 17, 2017
    Assignee: OPTOS PLC
    Inventor: Hind Azegrouz
  • Patent number: 9782065
    Abstract: Provided is a snapshot spectral domain optical coherence tomographer comprising a light source providing a plurality of beamlets; a beam splitter, splitting the plurality of beamlets into a reference arm and a sample arm; a first optical system that projects the sample arm onto multiple locations of a sample; a second optical system for collection of a plurality of reflected sample beamlets; a third optical system projecting the reference arm to a reflecting surface and receiving a plurality of reflected reference beamlets; a parallel interferometer that provides a plurality of interferograms from each of the plurality of sample beamlets with each of the plurality of reference beamlets; an optical image mapper configured to spatially separate the plurality of interferograms; a spectrometer configured to disperse each of the interferograms into its respective spectral components and project each interferogram in parallel; and a photodetector providing photon quantification.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: October 10, 2017
    Assignee: IDX, LLC
    Inventors: Michael D. Abramoff, Edward DeHoog
  • Patent number: 9782072
    Abstract: An ophthalmologic imaging apparatus that captures an image of a subject's eye is provided. The apparatus includes a focusing unit configured to focus light returned from the subject's eye that is illuminated by the light of a first wavelength, onto an imaging unit, and a moving unit configured to move the focusing unit based on an optical path length difference between the light of the first wavelength and the light of a second wavelength that is different from the first wavelength when light returned from the subject's eye that is illuminated by the light of the second wavelength is focused onto the imaging unit.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: October 10, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hideyuki Ooban, Yasuhiro Nakahara, Hiroshi Itoh
  • Patent number: 9782070
    Abstract: The fundus photographing apparatus of the present invention includes an illumination light source that generates illumination light flux for illuminating a fundus (of a subject eye), a scanning optical system that converts the illumination light flux from the illumination light source unit into spot light to scan the fundus in two-dimensional directions of a horizontal direction and a vertical direction by the spot light, a light receiver that receives reflected light from each portion of the fundus illuminated by the spot light, and a fundus image acquiring unit that acquires a fundus image based on a signal from the light receiver, wherein the scanning optical system is provided with a scanner including a reflection mirror plate that rotates about orthogonal two axes to simultaneously deflect the spot light in the vertical direction and the horizontal direction for scanning.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: October 10, 2017
    Assignee: Kabushiki Kaisha TOPCON
    Inventors: Atsushi Utsunomiya, Hirotake Maruyama, Tomoyoshi Abe, Yasufumi Fukuma
  • Patent number: 9775508
    Abstract: A computer-implementable method of analyzing tissues of a retina. A polarization-sensitive (PS-OCT) image data set of the retina is received from a polarization-sensitive device, each element in the polarization-sensitive image data set being associated with an intensity value ({I1, . . . , IL}) and a polarization direction ({P1, . . . , PL}). A likelihood score is determined for each element of the polarization-sensitive image data set based on the intensity value of the element and a degree of divergence (?*TP or D2) of the polarization direction associated with the element from a reference polarization direction (?*) associated with the polarization sensitive image data set, wherein the likelihood score indicates whether said element is drawn from a directionally polarized distribution or a depolarizing distribution, Elements of the polarization-sensitive image data set are classified using the determined likelihood scores to analyze tissues of the retina.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: October 3, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Andrew Docherty, Barry James Drake
  • Patent number: 9775515
    Abstract: A system for multi-scale closed-loop eye tracking to compensate for translation and rotation motion while imaging in vivo a surface area of an internal structure of an eye of a subject includes a narrow field imaging device optically coupled to an optical path to receive light reflected from the surface area of the structure of the eye. A wide field camera is optically coupled to the optical path by a beam splitter disposed in the optical path. A tracking mirror is disposed in the optical path between the beam splitter and the structure of the eye. A control process algorithm actively compensates substantially in real time for both translational and rotational movements of the eye. A system where a torsional correction device causes a rotating movement of a subject's head and a method for multi-scale closed-loop eye tracking are also described.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: October 3, 2017
    Assignee: University of Rochester
    Inventors: Qiang Yang, Jie Zhang
  • Patent number: 9775514
    Abstract: An apparatus for measuring a fundus of a subject. The apparatus includes a focusing unit which adjusts a defocus of the apparatus. The focusing unit includes a first focusing mirror and a second focusing mirror. The first focusing mirror and second focusing mirror are arranged so that an incident beam from the light source entering the focusing unit and an emitted beam exiting the focusing unit are substantially parallel to each other. Adjustment of the defocus is accomplished by moving both first focusing mirror and second focusing mirror such that incident beam and emitted beam remain substantially parallel to each other. The apparatus includes a wavefront sensor for detecting a shape of a wavefront. The apparatus includes a wavefront correction device. The wavefront correction device adjusts a wavefront of the light from the light source based on the shape of the wavefront detected by the wavefront sensor.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: October 3, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kenichi Saito
  • Patent number: 9773170
    Abstract: Embodiments that relate to determining an estimated pupil region of an eye are disclosed. In one embodiment a method includes receiving an image of an eye, with the image comprising a plurality of pixels. A rough pupil region is generated using at least a subset of the plurality of pixels. A plurality of pupil boundary point candidates are extracted from the rough pupil region, with each of the candidates weighted based on color values of at least two neighbor pixels. A parametric curve may be fitted to the weighted pupil boundary point candidates to determine the estimated pupil region of the eye of the user.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: September 26, 2017
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Milan Vugdelija, Djordje Nijemcevic, David Zachris Nister, Christopher Maurice Mei, Chandra Sekhar Gatla
  • Patent number: 9767556
    Abstract: There is provided an eye-fundus image output device including a selection unit configured to select a site of a presented eye-fundus image, an optimization unit configured to optimize an image of the selected site, and an output unit configured to output an image in which the selected site has been optimized.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: September 19, 2017
    Assignee: SONY CORPORATION
    Inventors: Tomoyuki Ootsuki, Seiji Kobayashi, Kazuki Aisaka
  • Patent number: 9757026
    Abstract: An ophthalmic apparatus which photographs an endothelial cell and measures a coat thickness of a cornea of an eye to be examined in a non-contact manner; comprising an image pickup unit (19) for photographing a corneal endothelium of the eye to be examined, a control unit (49) for detecting a cell wall of the endothelial cell from a corneal endothelial image photographed by the image pickup unit and for performing an image processing of hatching the cell wall with a boundary line, a display unit (54) for displaying an analytical image in which the cell wall hatched with the boundary line, and an operation unit (55), wherein the control unit changes the shading of the boundary line based on an input from the operation unit.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: September 12, 2017
    Assignee: Kabushiki Kaisha TOPCON
    Inventor: Hiroki Oe
  • Patent number: 9757027
    Abstract: A system and method are described for performing tear film structure measurement. A broadband light source illuminates the tear film. A spectrometer measures respective spectra of reflected light from at least one point of the tear film. A color camera performs large field of view imaging of the tear film, so as to obtain color information for all points of the tear film imaged by the color camera. A processing unit calibrates the camera at the point measured by the spectrometer so that the color obtained by the camera at the point matches the color of the spectrometer at the same point. The processing unit determines, from the color of respective points of the calibrated camera, thicknesses of one or more layers of the tear film at the respective points. Other applications are also described.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: September 12, 2017
    Assignee: ADOM, Advanced Optical Technologies Ltd.
    Inventors: Yoel Arieli, Yoel Cohen, Shlomi Epstein, Dror Arbel, Ra'anan Gefen
  • Patent number: 9759545
    Abstract: A luminous flux including laser light of different wavelengths outgoing from a light source unit is split into two luminous fluxes, the first luminous flux is focused on a sample with an objective lens, and the second luminous flux functions as reference light without radiating it onto the sample. Signal light reflected from the sample and the reference light are multiplexed by a polarized beam splitter and are made to interfere on four photodetectors out of phase in a photodetection unit. A signal processing unit acquires the optical axis distribution of an object in the sample by using the outputs of the plural photodetectors for every input wavelength, acquiring a detection signal and calculating the ratio of intensities of the detection signals at the different input wavelengths for every position in the sample.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: September 12, 2017
    Assignee: HITACHI-LG DATA STORAGE, INC.
    Inventors: Masaki Mukoh, Kentaro Osawa, Tatsuro Ide
  • Patent number: 9757023
    Abstract: The invention relates to methods and systems for automatically detecting an optic disc in a retinal fundus autofluorescence image. A monochromatic image of a retina is obtained by stimulated autofluorescence. The image is processed using filters and machine learning to identify blood vessel segments and to identify pixels as possible optic disc pixels. The possible optic disc pixels are grouped into clusters, and a best fit circle (or portion thereof lying within the image) is fitted to each cluster. The circle may be enlarged to improve image contrast at the circumference of the circle. Blood vessel segments that intersect the circle are identified, and metrics are derived from such intersecting blood vessel segments. These metrics are assessed by machine learning processes to determine the probability that each cluster contains the optic disc, and the contours of the optic disc are further determined by analysis of the possible optic disc pixels.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: September 12, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Kanishka T. Jayasundera, Matthew K. Johnson-Roberson
  • Patent number: 9750402
    Abstract: A disclosed ophthalmologic apparatus includes an image acquisition unit configured to acquire a fundus image of an eye to be examined on the basis of returning light from a fundus that is obtained by irradiating the fundus of the eye with light; and a correction unit configured to correct the fundus image in accordance with a degree of clouding of a clouded portion of the eye such that, among color components contained in the fundus image, a ratio of a color component, in the fundus image, that is scattered by a clouded portion of the eye at a higher rate increases against a ratio of another color component.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: September 5, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Mitsuhiro Ono