Including Diaphram Or Slit Patents (Class 351/214)
  • Patent number: 11127380
    Abstract: A head-mounted device may include a processor configured to receive information from a sensor that is indicative of a position of the head-mounted device relative to a reference point on a face of a user; and adjust a rendering of an item of virtual content based on the position or a change in the position of the device relative to the face. The sensor may be distance sensor, and the processor may be configured to adjust the rendering of the item of virtual content based a measured distance or change of distance between the head-mounted device and the point of reference on the user's face. The point of reference on the user's face may be one or both of the user's eyes.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: September 21, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Scott Beith, Ananthapadmanabhan Arasanipalai Kandhadai, Jonathan Kies, Robert Tartz
  • Patent number: 11064883
    Abstract: A base for a slit lamp having a table and a frame mounted to the table, the base comprising a carriage configured to support a biomicroscope, a first elongate member extending horizontally through the carriage, and a second elongate member extending horizontally through the carriage. The carriage is slidable axially along the first elongate member and the second elongate member to move the biomicroscope relative to the frame. The second elongate member provides a stabilizing force on the carriage to counteract an upward force exerted by the carriage and the biomicroscope mounted thereon.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: July 20, 2021
    Inventor: Brett Bartelen
  • Patent number: 10881295
    Abstract: An ophthalmic system of an embodiment includes a slit lamp microscope and an information processing apparatus. The slit lamp microscope includes an image acquisition device that acquires a three dimensional image by photographing a subject's eye, and a first communication device that transmits the three dimensional image to the information processing apparatus. The information processing apparatus includes a second communication device that receives the three dimensional image transmitted by the first communication device, a display controller that displays a first image based on the three dimensional image on a display device, a partial region designation processor that designates a partial region of the first image, and a rendering processor that renders the three dimensional image based on the partial region to construct a second image. The display controller displays the second image on the display device.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: January 5, 2021
    Assignee: TOPCON CORPORATION
    Inventors: Hisashi Tsukada, Yasufumi Fukuma
  • Patent number: 10512699
    Abstract: The present subject matter relates to a non-invasive optical imaging method for monitoring early pathological events specific to Alzheimer's disease (AD), such as the development, amount and location of amyloid plaques. The ability to monitor such events provides a basis for, among other things, AD diagnosis, prognosis and assessment of potential therapies. In addition, the present subject matter introduces novel methods for treating AD and retinal ailments associated with AD. A?-plaque detection in living brains is extremely limited, especially at high resolution; therefore the present invention is based on studies focusing on the eyes as an alternative to brain-derived tissue that can be imaged directly, repetitively and non-invasively.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 24, 2019
    Assignees: Cedars-Sinai Medical Center, Yeda Research and Development Co., Ltd.
    Inventors: Yosef Koronyo, Maya Koronyo, Keith Black, Michal Schwartz, Daniel L. Farkas
  • Patent number: 10426339
    Abstract: Systems, apparatuses, and methods of and for an ophthalmic surgical system are disclosed. An ophthalmic surgical system may include a surgical microscope through which a user may view a surgical site. A display device in communication with the surgical microscope may output a graphical overlay into the field of view of the surgical microscope. The graphical overlay may display one or more configurable parameters associated with a surgical tool. A user may adjust the one or more configurable parameters with an input device while visualizing the field of view.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: October 1, 2019
    Assignee: Novartis AG
    Inventor: Michael James Papac
  • Patent number: 10113686
    Abstract: To adapt a housing (2) to an uneven standing surface, an adjustment device (1) has a foot piece (3) with an internal thread (5) that defines a displacement axis (4). The foot piece is located in a recess (6) of the housing that is accessed from a surface of the housing that faces towards the standing surface. A cross-sectional profile of the foot piece perpendicular to the displacement axis coacts with the recess to prevent rotation of the foot piece about the displacement axis. A spindle (7) with an external thread (8) that cooperates with the internal thread of the foot piece allows axial movement of the spindle along the displacement axis. A levelling wheel (9), connected to the spindle by a rotation-blocking connection allows the spindle to be rotated relative to the foot piece.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: October 30, 2018
    Assignee: Mettler-Toledo (Albstadt) GmbH
    Inventors: Edgar Kempf, Xinwei Su, Dieter Kontschak
  • Patent number: 9807370
    Abstract: A stereoscopic picture taking systems includes a first camera having a first optical objective, and a second camera having a second optical objective, where the optical characteristics of the two objectives are substantially identical. The stereoscopic system also includes a plane semi-reflecting plate in front of the first objective and inclined by a predetermined angle on the optical axis of the first objective. The stereoscopic picture taking system also includes an optical element having a plane reflecting surface disposed at the level of the second objective and inclined by the same predetermined angle on the optical axis of the second objective such way that the main part of the optical axis of the second objective is substantially parallel to the optical axis of the first objective. This optical element can be a plane mirror or a return prism. The first objective has a plate of identical optical thickness.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: October 31, 2017
    Assignee: THALES
    Inventors: Maxime Cadel, Xavier Gonon, Patrick Defay, Elvir Mujic, Gabriel Narcy, Catherine Hun
  • Patent number: 9795692
    Abstract: Described are methods for the detection, in the eye of an individual, of protein aggregates or other misfolded proteins associated with disease using peptide or peptide mimic probes that preferentially associate with the protein aggregates or misfolded proteins, which can be accomplished non-invasively.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: October 24, 2017
    Assignee: SYSTEM OF SYSTEMS ANALYTICS, INC.
    Inventors: Giora Feuerstein, Richard Cliff
  • Patent number: 9662013
    Abstract: According to one embodiment, an ophthalmic microscope includes an illumination system, a pair of light-receiving systems, and a first mechanism. The illumination system is configured to irradiate a subject's eye with illumination light. Each of the light-receiving systems includes a first objective lens and a first imaging device, and is configured to guide return light of the illumination light returning from the subject's eye to the first imaging device through the first objective lens. The objective optical axes of the light-receiving systems are not parallel to each other. The first mechanism is configured to move the light-receiving systems relative to each other to change an angle formed by the objective optical axes of the light-receiving systems.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: May 30, 2017
    Assignee: KABUSHIKI KAISHA TOPCON
    Inventors: Yasufumi Fukuma, Kazuhiro Oomori, Satoshi Yamamoto
  • Patent number: 9655517
    Abstract: A portable digital imaging device, which utilizes the advanced features of wireless data transmission and high computing power of mobile computing devices in junction with the use miniature cameras and solid state lighting technology, is proposed as the next generation of medical imaging devices, in particular in ophthalmic imaging applications.
    Type: Grant
    Filed: February 3, 2013
    Date of Patent: May 23, 2017
    Assignee: Visunex Medical Systems Co. Ltd.
    Inventors: Wei Su, Li Xu
  • Patent number: 9642524
    Abstract: Provided is a slit lamp microscope capable of controlling irradiation of slit light and background illumination light interlockingly. Embodiment includes a main illumination system, background illumination system, observation system and controller. The main illumination system includes a first light source unit that outputs first light and slit forming unit that forms a slit with changeable width, and illuminates an eye with the first light having passed through the slit. The background illumination system includes a second light source unit that outputs second light, and illuminates a peripheral area of an eye area irradiated with the first light. The observation system includes an eyepiece lens, imaging device, and group of optical elements that guides reflected light of the first light and reflected light of the second light from the eye to the eyepiece lens and imaging device. The controller interlockingly controls the main illumination system and second light source unit.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: May 9, 2017
    Assignee: KABUSHIKI KAISHA TOPCON
    Inventors: Toshiaki Sato, Takanori Takeda, Takahiro Watanabe
  • Patent number: 9610062
    Abstract: Systems and methods for measuring a patient's relative ocular distention as an indicator of eye, brain, and systemic hemodynamic and physiological conditions are provided. Ocular distention is measured and displayed continuously through the closed eyelid by strain imaging techniques, for example with ultrasound or optical computed tomography.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: April 4, 2017
    Inventor: Derrick Aguren
  • Patent number: 9521950
    Abstract: A slit lamp mounted eye imaging, a slit lamp integrated, a handheld, OCT integrated, or attached to a separate chinrest-joystick assembly apparatus and method for producing a wide field and/or magnified views of the posterior or the anterior segments of an eye through an undilated or dilated pupil is disclosed. The apparatus images sections and focal planes and utilizes an illumination system that uses one or more LEDs, shifting optical elements, flipping masks, and/or aperture stops where the light can be delivered into the optical system on optical axis or off axis from center of optical system and return imaging path from the eye, creating artifacts in different locations on the eye image. Image processing is employed to detect and eliminate artifacts and masks from images. The apparatus can be used in combination with an OCT, microscope and can be disposed in a hand-held housing for hand-held use.
    Type: Grant
    Filed: April 13, 2014
    Date of Patent: December 20, 2016
    Assignee: NeuroVision Imaging LLC
    Inventor: Steven Roger Verdooner
  • Patent number: 9498844
    Abstract: The invention relates to a device for machining an object by laser radiation, in particular by using the photodisruption method. Said device comprises an observation device for imaging the object and a laser scanning device by which the laser radiation is passed over a predetermined sector of the object for scanning said sector. According to the invention, such a device includes the observation device with a first lens for imaging the object; the laser scanning device with a second lens, through which the laser radiation is guided, in which both lenses with regard to the dimension of the regions to be produced in the images and/or with regard to their focal intercept are different from each other. This invention alternately images the respective region of the object in a first operating mode by the first lens and in a second operating mode by the second lens. It is thus possible to use in both operating modes a lens adapted to the intended imaging purpose.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: November 22, 2016
    Assignee: Carl Zeiss Meditec AG
    Inventors: Marco Hanft, Dirk Muehlhoff, Mario Gerlach, Elke Ebert
  • Patent number: 9398851
    Abstract: A retinal imaging device and illumination module. The illumination module includes a light source to provide an incident beam along an illumination axis, a condenser lens at a spaced apart distance from the light source for condensing the incident beam and emanating a condensed incident beam, a transparent plate at a spaced apart distance from the condenser lens, wherein the transparent plate comprises a light absorber, at least one projections lens system to focus the condensed incident beam, a shield at a spaced apart distance from the projection lens system to yield a first partially blocked beam to form a comea illumination doughnut, and a perforated mirror comprising a hollow cylinder. A portion of the hollow cylinder protrudes out from a reflecting face of the mirror, forming an elliptical stopper to yield a second partially blocked beam to form a pupil illumination doughnut, enabling reflex-free imaging of the retina.
    Type: Grant
    Filed: August 28, 2011
    Date of Patent: July 26, 2016
    Assignee: Remidio Innovative Solutions Pvt. Ltd.
    Inventors: Sivaraman Anand, Kummaya Pramod, Nagarajan Shanmuganathan
  • Patent number: 9039175
    Abstract: An optical coherence eye-fundus tomography device has a high resolution and a good operability, as well as be miniaturized and be produced at a low cost. The optical coherence eye-fundus tomography device includes: a light source unit which emits a source light beam; a reference-light unit which reflects a reference light beam; an inspection unit which illuminates an object with an object scanning light beam, reflected the object scanning light beam; and a detection unit which obtains a tomographic image of the object on the basis of the interference light beam produced by interfering the reflected reference light beam with the reflected object light beam. For example, the light source unit emits the outgoing light beam that has a depth of focus of not less than 300 ?m, and resolution that is 6 ?m×6 ?m or higher in a planar direction perpendicular to a traveling direction of the outgoing light beam.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: May 26, 2015
    Assignee: UTSUNOMIYA UNIVERSITY
    Inventors: Toyohiko Yatagai, Cense J. Abraham
  • Patent number: 9039181
    Abstract: Example embodiments of a large dynamic range sequential wavefront sensor for vision correction or assessment procedures are disclosed. An example embodiment includes first and second optically coupled 4F relays and a variable focus lens disposed substantially at the image plane of the first 4F relay and the object plane of the second 4F relay.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: May 26, 2015
    Assignee: Clarity Medical Systems, Inc.
    Inventors: Yan Zhou, William Shea
  • Publication number: 20150085255
    Abstract: An optical system (120) for detecting optical aberrations of light from an object (101), the optical system comprising: a reference light-source (102) providing collimated reference light; an optical element (212) configured to focus at least one collimated light beam incident on the optical element (212) to a plurality of focal points in a conjugate object plane (214), the optical element (212) being arranged in an optical path between the reference light-source (102) and the object (101) for transmitting a plurality of reference light beams towards the object (101); and a wavefront sensor (112) configured to detect a property indicative of an optical aberration of light incident on the wavefront sensor; wherein the optical element (212) is further arranged to transmit a plurality of reflected guide star light beams resulting from reflection of the reference light beams at the object (101) towards the wavefront sensor (112).
    Type: Application
    Filed: April 17, 2013
    Publication date: March 26, 2015
    Applicant: PROFUNDUS AB
    Inventor: Jorgen Thaung
  • Publication number: 20150070655
    Abstract: Methods and apparatus for automatically aligning a confocal aperture utilize a confocal imaging system and a computer controlled optimization algorithm such as the Nelder-Mead algorithm for imaging an in-vivo eye having chromatic aberration. When using a confocal aperture of 3.4 Airy disks in diameter, images were obtained using retinal radiant exposures of less than 2.44 J/cm2, which is ˜22 times below the current ANSI maximum permissible exposure. The embodied method can be used, e.g., to study RPE morphology in AMD and other diseases, providing a powerful tool for understanding disease pathogenesis and progression, and offering a new means to assess the efficacy of treatments designed to restore RPE health.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 12, 2015
    Applicant: UNIVERSITY OF ROCHESTER
    Inventor: Ethan A. Rossi
  • Patent number: 8931902
    Abstract: The present invention relates to an illumination device for a stereomicroscope, in particular a surgical microscope for eye surgery, having at least one light source (10), a collector lens system (14), an aperture diaphragm (16), a condenser lens system (18), and an objective (22), illumination light being directed from the light source (10) through the collector lens system (14), the aperture diaphragm (16), the condenser lens system (18), and the objective (22) into the object plane (E19), the aperture diaphragm (16) being provided as a double orifice plate or four-orifice plate.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: January 13, 2015
    Assignee: Leica Microsystems (Schweiz) AG
    Inventor: René Zünd
  • Patent number: 8919957
    Abstract: A sequential wavefront sensor includes a light source, a beam deflecting element, a position sensing detector configured to output a plurality of output signals and a plurality of composite transimpedance amplifiers each coupled to receive an output signal. The output of each composite transimpedance amplifier is phase-locked to a light source drive signal and a beam deflecting element drive signal.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: December 30, 2014
    Assignee: Clarity Medical Systems, Inc.
    Inventors: Yan Zhou, Bradford Chew, William Shea
  • Patent number: 8919958
    Abstract: An wavefront sensor uses a calibration wave generator to calculate correction factors to be applied to ratiometric combinations of position sensor output signals to determine real centroid deflection values.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: December 30, 2014
    Assignee: Clarity Medical Systems, Inc.
    Inventors: Yan Zhou, Bradford Chew, William Shea
  • Publication number: 20140375951
    Abstract: Combined equipment for non-contacting determination of axial length (AL), anterior chamber depth (VKT) and corneal curvature (HHK) of the eye, are also important for the selection of the intraocular lens IOL to be implanted, particularly the selection of an intraocular lens (IOL) to be implanted, preferably with fixation of the eye by means of a fixating lamp and/or illumination through light sources grouped eccentrically about the observation axis.
    Type: Application
    Filed: June 27, 2014
    Publication date: December 25, 2014
    Inventors: Roland Barth, Roland Bergner, Lothar Mueller, Dietmar Steinmetz, Siegfried Schubert, Klaus-Ditmar Voigt, Frank Behrendt, Burkhard Dietzel, Axel Doering
  • Publication number: 20140313487
    Abstract: The present invention relates to a wavefront sensor using a pair of screens, each having a two-dimensional array of circular apertures, to achieve Moiré effects, and its use to measure the slope of a wavefront.
    Type: Application
    Filed: November 20, 2013
    Publication date: October 23, 2014
    Applicant: WaveTec Vision Systems, Inc.
    Inventor: Anthony Y. Van Heugten
  • Patent number: 8864311
    Abstract: Among other things, an illumination device (10) is described for one, two or more observation beam paths, each with an observation device having an observation beam bundle, in particular for an operating microscope, having at least one light source (12) for producing at least one illumination beam bundle for illuminating an object to be observed (13), in particular, an eye to be observed, wherein the at least one illumination beam bundle runs coaxially to an observation beam bundle. It is provided according to the invention, in order to be able to suppress disruptive reflections, that illumination device (10) has an illumination optics (11) that is constructed according to the Köhler principle of illumination, and in which at least one reflection diaphragm (18) is provided in order to avoid light reflected from the surface of an objective element (19). In addition, a correspondingly improved observation device is described.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: October 21, 2014
    Assignee: Carl Zeiss Meditec AG
    Inventors: Franz Merz, Peter Reimer, Fritz Straehle
  • Patent number: 8833941
    Abstract: The present patent application discloses a digital slit-lamp microscope system and the methods of the electronic recording and remote diagnosis. The present patent application relates to the field of optical instrument and remote communication control. The purpose is to solve the problems of the electronic recording, reappearing and remote diagnosis of the slit-lamp image. The digital slit-lamp microscope system comprises digital slit-lamp microscope side, communication unit and client side. The digital slit-lamp microscope side includes a build-in slit-lamp microscope and is connected to the communication unit and the client side in sequence. The digital slit-lamp microscope side irradiates the eyes of the patient, and then transmits the pathology information of the eyes of the patient to the communication unit and the client side in sequence.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: September 16, 2014
    Assignee: Shanghai Mediworks Precision Instruments Co. Ltd
    Inventors: Yue Wei, Wenguang Chen, Sufeng Yan, Yunxiao Han, Shaojuan Wang, Xianran Peng, Hang Yu, Zhaosong Kong
  • Patent number: 8827452
    Abstract: In one embodiment, a wavefront sensor is combined with a slit lamp eye examination device so that real time aberration values of an eye being examined can be viewed during a slit lamp eye examination session.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: September 9, 2014
    Assignee: Clarity Medical Systems, Inc.
    Inventors: Yan Zhou, William Shea
  • Publication number: 20140211163
    Abstract: The slit lamp microscope is capable of easily adjusting a slit-light and a backlight. The slit lamp microscope comprises: a slit lamp for emitting a slit-light; a mirror unit having a reflecting mirror or a prism, which reflects the slit-light emitted from the slit lamp toward an eye of an examinee; a microscope unit for observing the eye of the examinee; and a backlight source for emitting a backlight, which illuminates a circumference of the slit-light, toward the eye of the examinee. The backlight source is provided to the mirror unit.
    Type: Application
    Filed: September 30, 2013
    Publication date: July 31, 2014
    Applicant: Takagi Seiko Co., Ltd.
    Inventors: Takahiro MARUYAMA, Takeshi NARA, Shigeo KANAZAWA
  • Patent number: 8764192
    Abstract: An opthalmological measuring instrument, e.g. for determining the corneal curvature, anterior chamber depth, axial length, or the like, including measuring systems for determining measurement of the mentioned physical parameters. The measuring systems are connected to an evaluation unit which verifies whether quality parameters regarding the measurements are satisfied and generates a corresponding signal that indicates to the medical professional user that a proper measurement can be taken.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: July 1, 2014
    Assignee: Carl Zeiss Meditec AG
    Inventors: Roland Barth, Frank Behrendt, Roland Bergner, Klaus-Ditmar Voigt
  • Patent number: 8764190
    Abstract: A fundus camera includes an illumination optical system, an observation photographic optical system, a photographic diaphragm unit located in a position conjugate with the subject's eye in the observation photographic optical system, and an imaging unit disposed in the observation photographic optical system. The photographic diaphragm unit includes a first photographic diaphragm fixed during capturing of a still image and a second photographic diaphragm movable during capturing of a moving image. The fundus camera further includes a diaphragm driving unit configured to move the second photographic diaphragm on a plane orthogonal to an optical axis, an image recording unit configured to capture, with the first photographic diaphragm, a still image based on an output of the imaging unit and, with the second photographic diaphragm, a moving image based on an output of the imaging unit, and a display unit configured to display an image captured by the imaging unit.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: July 1, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Hara
  • Patent number: 8746881
    Abstract: For processing eye tissue (8) by means of femtosecond laser pulses, an ophthalmological device (1) includes a projection optical unit (2) for the focused projection of the femtosecond laser pulses into the eye tissue (8). Disposed upstream of the projection optical unit (2) is a first beam-deflecting scanner system (3) for scanning the eye tissue (8) with the femtosecond laser pulses along a processing line. A second beam-deflecting scanner system (5) is disposed upstream of the first scanner system (3) and is designed for scanning the eye tissue (8) with the femtosecond laser pulses in a scanning movement superimposed on the processing line and running in a deflection plane. The second scanner system (5) has a scanner speed that is a multiple of the scanning speed of the first scanner system (3). A rotation system is provided for aligning the deflection plane with a defined angle with respect to the processing line.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: June 10, 2014
    Assignee: SIE AG, Surgical Instrument Engineering
    Inventor: Christian Rathjen
  • Publication number: 20140139807
    Abstract: A slit lamp microscope capable of appropriately and easily carrying out the setting of the optical system is provided. In storage 102 of a slit lamp microscope 1, correspondence information 110 is stored in which standard setting conditions of an illumination system 8 and/or an observation system 6 are associated with each of multiple sites of an eye E. A searching part 121 searches the standard setting conditions corresponding to a site designated by an operation part 104 from the correspondence information 110. A setting-state acquiring part 122 acquires current setting states of the illumination system 8 and/or the observation system 6. A setting-state specifying part specifies, from among the current setting states acquired by the setting-state acquiring part 122, those differing from the standard setting conditions searched by the searching part 121. A controller displays information based on this specified result on the display 103.
    Type: Application
    Filed: May 16, 2012
    Publication date: May 22, 2014
    Applicant: KABUSHIKI KAISHA TOPCON
    Inventor: Takumi Uchiyama
  • Patent number: 8678591
    Abstract: Example embodiments of a large dynamic range sequential wavefront sensor for vision correction or assessment procedures are disclosed. An example embodiment optically relays a wavefront from an eye pupil or corneal plane to a wavefront sampling plane in such a manner that somewhere in the relaying process, the wavefront beam from the eye within a large eye diopter range is made to reside within a desired physical dimension over a certain axial distance range in a wavefront image space and/or a Fourier transform space. As a result, a wavefront beam shifting device can be disposed there to fully intercept and hence shift the whole beam to transversely shift the relayed wavefront.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 25, 2014
    Assignee: Clarity Medical Systems, Inc.
    Inventors: Yan Zhou, William Shea
  • Publication number: 20140078469
    Abstract: The present invention relates to a slit lamp unit (1) for a surgical microscope, the slit lamp unit (1) comprising a slit illumination unit (2) having a slit illumination optic for generating a slit illumination beam path (5, 6), and a guide rail (3) for displacement of the slit illumination unit (2) along a direction designated by the guide rail (3), the guide rail being embodied for displacement of the slit illumination unit (2) along a linear direction (12), and the slit illumination unit (2) being mounted on the guide rail (3) rotatably around a rotation axis (13) perpendicular to said linear displacement direction (12).
    Type: Application
    Filed: September 12, 2013
    Publication date: March 20, 2014
    Applicant: Leica Microsystems (Schweiz) AG
    Inventor: Michael GUENTERT
  • Publication number: 20140071401
    Abstract: A retinoscope for detecting eye ametropia and astigmatism axes is disclosed in the invention, which comprises an illuminating and imaging system comprising an illumination light source, a projecting mirror and a half transparent and half reflecting mirror arranged sequentially along the direction of propagation of the illumination light, the respective optical axes of the projecting mirror and half transparent and half reflecting mirror are collinear with each other, and the reflecting plane of the half transparent and half reflecting mirror is at an angle of 45° relative to the illumination optical axis, wherein a condensing lens column and a retinoscopy diaphragm are disposed sequentially along the illumination optical axis between the illumination light source and the projecting mirror, the optical axis of the condensing lens column is coincident with the illumination optical axis, and the plane of the retinoscopy diaphragm is perpendicular to the illumination optical axis.
    Type: Application
    Filed: June 19, 2013
    Publication date: March 13, 2014
    Applicant: Zumax Medical Co., Ltd
    Inventors: Jilong Wang, Jin He, Shunguo Shen, Xiangdong Li, Weizhong Zhou, Xiaohu Liu
  • Publication number: 20140063462
    Abstract: An apparatus including a position sensing detector and a processing system, with the processing system configured to determine axis of astigmatism and cylinder and sphere diopter values of a subject eye.
    Type: Application
    Filed: November 7, 2013
    Publication date: March 6, 2014
    Inventors: Yan Zhou, Bradford Chew, William Shea
  • Publication number: 20140063463
    Abstract: A wavefront sensor includes a light source configured to illuminate a subject eye, a detector, a first beam deflecting element configured to intercept a wavefront beam returned from a subject eye when the subject eye is illuminated by the light source and configured to direct a portion of the wavefront from the subject eye through an aperture toward the detector and a controller, coupled to the light source and the beam deflecting element, configured to control the beam deflecting element to deflect and project different portions of an annular ring portion of the wavefront from the subject eye through the aperture and further configured to pulse the light source at a firing rate to sample selected portions of the annular ring at the detector.
    Type: Application
    Filed: November 7, 2013
    Publication date: March 6, 2014
    Inventors: Yan Zhou, Bradford Chew, William Shea
  • Publication number: 20140055749
    Abstract: A sequential wavefront sensor includes a light source, a beam deflecting element, a position sensing detector configured to output a plurality of output signals and a plurality of composite transimpedance amplifiers each coupled to receive an output signal. The output of each composite transimpedance amplifier is phase-locked to a light source drive signal and a beam deflecting element drive signal.
    Type: Application
    Filed: November 7, 2013
    Publication date: February 27, 2014
    Inventors: Yan Zhou, Bradford Chew, William Shea
  • Publication number: 20130321766
    Abstract: An ophthalmologic apparatus includes an aberration measurement unit configured to measure aberration caused by a subject's eye by using a return beam of a first measuring beam from the subject's eye, a correction unit configured to correct aberration of a return beam of a second measuring beam from the subject's eye caused by the subject's eye based on the aberration measured by the aberration measurement unit, a first acquisition unit configured to obtain a first image of the subject's eye by using the aberration-corrected return beam of the second measuring beam from the subject's eye, and a control unit configured to enter one of the first measuring beam and the second measuring beam into the subject's eye while limiting entry of the other measuring beams into the subject's eye.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Inventor: Kazuya Morohashi
  • Patent number: 8596789
    Abstract: A tonometer for measuring intraocular pressure of an examinee's eye in a non-contact manner, comprises: an arithmetic part for calculating the intraocular pressure; a fluid blowing unit for blowing a fluid at a cornea of the examinee's eye through a nozzle; a projecting optical system for projecting light onto an anterior segment of the examinee's eye through the nozzle, the system including a light source and a condensing lens; and an imaging optical system for imaging a cross-sectional image of the anterior segment, the system including an imaging lens and an imaging elements.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: December 3, 2013
    Assignee: Nidek Co., Ltd.
    Inventor: Michihiro Takii
  • Publication number: 20130293845
    Abstract: A patient examination assembly comprises a rotatable stand adapted to mount a slit lamp microscope, and a phoropter attached to the stand by a telescoping arm assembly, comprising an arm and a connector and the connector comprises a first link and a second link. The first link is telescopeable within the second link.
    Type: Application
    Filed: July 1, 2013
    Publication date: November 7, 2013
    Inventor: Ronald M. Kendrick
  • Patent number: 8573777
    Abstract: A patient examination assembly comprises a rotatable stand adapted to mount a slit lamp microscope, and a phoropter attached to the stand by a telescoping arm assembly, comprising an arm and a connector, and the connector comprises a first link and a second link. The first link is telescopeable within the second link.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: November 5, 2013
    Assignee: Opthamology Associates of Northwestern Ohio, Inc.
    Inventor: Ronald M. Kendrick
  • Patent number: 8562133
    Abstract: A simulator to be used in ophthalmological measurements includes a display apparatus and a control device. The control device is adapted to control the display apparatus in such a manner that the display apparatus displays an image that is adapted to simulate the arrangement of a pupillary midpoint relative to a reference structure.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: October 22, 2013
    Assignee: WaveLight GmbH
    Inventors: Stefan Schmid, Berndt Warm
  • Patent number: 8550626
    Abstract: The present invention relates to an instrument for eye (E) examination, the system including an imaging system (2) to produce images of a portion of the eye to be examined; a projection system (3) to project a stimulus of visible light on a location in the portion of the eye to be examined and a background light on the portion of the eye to be examined; in which the projection system (3) has a telecentric design to uniformly project the stimulus and the background and includes a light source (114) and a movable mirror (112) which is moved according to the location of stimulus projection.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: October 8, 2013
    Assignee: Centervue S.p.A.
    Inventors: Paola Griggio, Fabio Turra
  • Patent number: 8545018
    Abstract: Positioning control relating to a two-aperture stop necessary for stereoscopic photography can be performed accurately and securely using a simple, inexpensive, compact, and lightweight structure. The apparatus comprises a two-aperture stop (28) provided with two stop apertures (28a, 28b), and a shutter plate (302) for opening and closing one of the two stop apertures. The two-aperture stop (28) is moved so as to intersect with an optical axis so that in monocular photography the two-aperture stop is positioned in a first position in which the stop aperture (28b) is disposed substantially at the center of the optical axis and so that in stereoscopic photography it is positioned in a second position in which the two stop apertures (28a, 28b) are disposed off-center from the optical axis.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: October 1, 2013
    Assignee: Kowa Company Ltd.
    Inventor: Atsushi Kakuuchi
  • Patent number: 8542273
    Abstract: An ophthalmic device and an arrangement for generating images with expanded dynamic range and a corresponding method for generating images with expanded dynamic range have at least one beamsplitter, in particular with an asymmetric splitting ratio, and at least two image sensors, wherein the image sensors are reflected into a common imaging beam path by the at least one beamsplitter.
    Type: Grant
    Filed: September 20, 2008
    Date of Patent: September 24, 2013
    Assignee: Carl Zeiss Meditec AG
    Inventors: Uwe Mohrholz, Frank Teige, Detlef Biernat
  • Publication number: 20130229625
    Abstract: The present patent application discloses a digital slit-lamp microscope system and the methods of the electronic recording and remote diagnosis. The present patent application relates to the field of optical instrument and remote communication control. The purpose is to solve the problems of the electronic recording, reappearing and remote diagnosis of the slit-lamp image. The digital slit-lamp microscope system comprises digital slit-lamp microscope side, communication unit and client side. The digital slit-lamp microscope side includes a build-in slit-lamp microscope and is connected to the communication unit and the client side in sequence. The digital slit-lamp microscope side irradiates the eyes of the patient, and then transmits the pathology information of the eyes of the patient to the communication unit and the client side in sequence.
    Type: Application
    Filed: April 19, 2013
    Publication date: September 5, 2013
    Inventor: Shanghai Mediworks Precision Instruments Co. Ltd
  • Patent number: 8523357
    Abstract: A fundus optical image device includes a light source, a first optical element set and a second optical element set. The first optical element set includes a first diaphragm. The light emitted from the light source passes through the first diaphragm and reaches a fundus through the first optical element set. The second optical element set includes a second diaphragm. The light is reflected by the fundus and then passes through the second diaphragm to present an image of the fundus. At least one of the first diaphragm and the second diaphragm is a microarray diaphragm.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: September 3, 2013
    Assignee: Crystalvue Medical Corporation
    Inventors: Chung-Cheng Chou, William Wang
  • Patent number: 8517536
    Abstract: A fundus optical image device includes a light source, a first optical element set and a second optical element set. The light emitted from the light source reaches the fundus through the first optical element set. The second optical element set has at least one curvature-adjustable lens. The light emitted from the light source is reflected by the fundus and then passes through the curvature-adjustable lens to present an image of the fundus.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: August 27, 2013
    Assignee: Crystalvue Medical Corporation
    Inventors: Chung-Cheng Chou, William Wang
  • Patent number: RE45013
    Abstract: A non-contact ultrasonic tonometer for measuring intraocular pressure of an examinee's eye, in non-contact manner by use of an ultrasonic wave comprises: a probe including a vibrator for making the ultrasonic wave incident on the examinee's eye and a sensor for detecting the ultrasonic wave reflected from the examinee's eye; and an observation optical system for observing an anterior segment of the eye, wherein the probe is placed in an optical path of the observation optical system, and the observation optical system forms an image of the anterior segment through a surrounding region of the probe.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: July 15, 2014
    Assignee: Nidek Co., Ltd.
    Inventor: Tetsuyuki Miwa