Patents Examined by M. Hasan
  • Patent number: 8439502
    Abstract: Aberration-induced vision symptoms are determined by obtaining at least one wave aberration of an eye, calculating at least one point-spread function from the wave aberration, convolving the point-spread function of eye with at least one specially designed image for night vision diagnosis, and determining at least one aberration-induced vision symptom of the tested eye from the convolved images. The specially designed images are for vision diagnosis of aberration-induced glare, halo, ghost image, and starburst. The invention methods for specifying aberration-induced symptoms allow to find an optimized refractive corrections of defocus and astigmatism and to reduce vision symptoms caused by aberrations in the eye.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: May 14, 2013
    Inventor: Junzhong Liang
  • Patent number: 7488075
    Abstract: An evaluation of an optical system with respect to visual acuity is appropriately performed, with a chromatic aberration of magnification of the optical system being taken into consideration. A performance of the optical system is evaluated based on a correlation between a visual acuity when looking through the optical system and the chromatic aberration of magnification of the optical system, the correlation being a proportional relation such that, when the visual acuity is expressed by a logarithmic visual acuity, the logarithmic visual acuity deteriorates substantially in proportion to the chromatic aberration of magnification, or on a correlation between the visual acuity and an optical value regarding the chromatic aberration of magnification which is substantially equivalent to the correlation.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: February 10, 2009
    Assignee: Hoya Corporation
    Inventor: Tetsuma Yamakaji
  • Patent number: 7427137
    Abstract: Eye chart for testing visual acuity which includes a plurality of optotypes arranged in a plurality of lines with each optotype in a line having a uniform resolution throughout and the resolution for each optotype in a given line is the same. The optotypes are generated by standardizing the maximum resolution angle any one letter may have and such is done by utilization of a design circle which represents the maximum resolution.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: September 23, 2008
    Inventor: Robert Koppany
  • Patent number: 7414799
    Abstract: A lens holder, which supports a light receiving lens, is screwed into a barrel portion of a body holder by respectively engaging hooks, which are provided in a screwing piece, with engaging-grooves formed in an end surface of the lens holder and then rotating the screwing piece. The screwing position of the lens holder is controlled so that the rotational direction position of a set of the engaging grooves is coincided with a reference position of an adjusting piece. Subsequently, the adjusting piece is engaged with the lens holder at the reference position. Then, a focus adjustment is performed by rotating the lens holder in a positive rotation direction.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: August 19, 2008
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventors: Masakuni Tokida, Takahiro Kamakura
  • Patent number: 7397617
    Abstract: An optical system provides a lens cell having a generally cylindrical lens cell body and an optical lens system therein. The lens cell body has a lens cell central longitudinal axis and a lens cell optical axis, eccentrically offset from the lens cell central longitudinal axis. A sleeve has a generally cylindrical sleeve body, an outer surface with a first longitudinal axis, and an inner surface with a second longitudinal axis, eccentrically offset from the first longitudinal axis. The lens cell is inserted into the sleeve. A housing has a generally cylindrical body into which the sleeve is at least partially inserted. The lens cell and the sleeve are rotated relative to each other and to the housing such that the lens cell optical axis is aligned in a desired location. After the lens cell optical axis is aligned in the desired location, the lens cell is fixedly connected to the sleeve and the sleeve is connected to the housing to prevent rotation of the sleeve relative to the housing.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: July 8, 2008
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Michael R. Floyd, Steven A. Brillhart
  • Patent number: 7388718
    Abstract: A lens holder includes a third group frame that serves as a holding member which holds lenses, a guide shaft that supports the third group frame when the third group frame is moved along the optical axis of the lenses, a rear barrel part perpendicularly to which the guide shaft is locked, a first bearing member that is molded as an integral part of the rear barrel part in order to bear the end of the guide shaft distal to the rear barrel part, and a guide shaft presser that when the first bearing member bears the end of the guide shaft distal to the base, bears the end of the guide shaft proximal to the rear barrel part.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: June 17, 2008
    Assignee: Sony Corporation
    Inventors: Tatsuo Makii, Nobuaki Aoki, Satoshi Imai, Hiroto Ogiyama
  • Patent number: 7380944
    Abstract: A method of documenting a patient's optic nerve utilizing solid and dashed line arrows as well as other references to clearly describe the diagnosis of each visit. An electronic medical record software product that provides a method for entering, documenting, and recording the appearance and diagnosed status of a patient's optic nerve. The software can provide the user the ability to enter the information in a variety of ways, including selection of various features from images presented as examples, entry data via text or selection from a table, drawing the optic nerve, or from an image. The software can store and present an animated history to help provide prognosis.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: June 3, 2008
    Inventor: Scott E. Klein
  • Patent number: 7382554
    Abstract: A spacer for extending an image from a lens assembly of a camera comprises a hollow tube having a front engaging portion capable of being connected to the lens assembly and a rear engaging portion capable of being connected to the camera body; and a first lens installed in the tube; and a second lens installed in the tube and being spaced apart from the first lens. The tube is telescopic. This is achieved by causing that the tube has a plurality of sections or the tube has at least two sections which are threadedly engaged or a compressible and expandable snake like structure is installed between two sections of the tube so that the tube can be prolonged or compressed to adjust the whole length of the spacer. Furthermore the first lens and second lens are concave lenses or convex lenses which are symmetric or asymmetric.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: June 3, 2008
    Inventor: Jeff C. P. Chuang
  • Patent number: 7377642
    Abstract: A fundus camera which includes an illumination optical system for projecting an illumination light to a fundus of a subject's eye: a photographing device for photographing the fundus; and light-receiving optical systems, which include a focus lens disposed in a light-receiving optical path for focusing the photographing devices with respect to the fundus and diopter compensation lenses disposed for being inserted into or withdrawn from the light-receiving optical path for guiding reflected light from the fundus to the photographing devices; a controlling device for determining whether a feasible focusing range of the focus lens is surpassed; and driving devices for inserting the diopter compensation lenses into or withdrawing them from the light-receiving optical path. The controlling device controls the driving devices in a defined manner.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: May 27, 2008
    Assignee: Kabushiki Kasisha Topcon
    Inventors: Mutsutaka Ishihara, Taisaku Kogawa
  • Patent number: 7377643
    Abstract: A method for capturing an image of an eye having an iris, including the steps of determining a plurality of measurement origins in the image; detecting an edge of the iris; determining a distance from each measurement origin to the edge of the iris; and, outputting a final image when each of the determined distances is equal to respective one of a plurality of predetermined lengths. A computer-readable medium containing computer-executable instructions for causing a computer to perform the above-described method is also described. An apparatus having an image sensor and a processor for performing the method is also described.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: May 27, 2008
    Assignee: Q Step Technologies, Inc.
    Inventors: Ernest P. Chock, Dale E. Winther
  • Patent number: 7377644
    Abstract: A slit lamp includes a rest for receiving a patient's face such as the patient's forehead. The slit lamp further includes an optical portion for observing the patient's eye. A fixation light is positioned near the optical portion to direct the patient's view toward the optical portion. A sensor secures to the rest and detects proximity of the user's face to the rest. The output of the sensor controls the fixation light such that the fixation light is turned on upon detecting the positioning of the user's face at the rest. In one embodiment, a shield secures to the optical portion and first and second fixation lights secure to the shield at either side of the optical portion. First and second flanges secure to the shield proximate the fixation lights and such that each fixation light is only viewable when directly in front of the patient's eye.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: May 27, 2008
    Inventor: Andrew Peter Davis
  • Patent number: 7379249
    Abstract: A zoom lens includes a first lens band having a positive focal length, a second lens band having a negative focal length, and at least third to fifth lens bands having positive focal lengths. An aperture diaphragm is located in the vicinity of the third lens band. When magnification i.e., zooming is performed from short to long focal point ends, the second lens band smoothly moves toward the third lend band and the fourth lens band simultaneously moves from the fifth lens band side toward a long focal point end so as to shear a magnification function together with the second lens band.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: May 27, 2008
    Assignee: Ricoh Company, Ltd.
    Inventor: Kazuyasu Ohashi
  • Patent number: 7375908
    Abstract: An image stabilizer manufacturing method provides an image stabilizer which can steady blurry images produced by camera shake or vibration. One of the magnet and a coil supporting member are fixed to a moving frame. In the state in which an optical axis of a correcting lens is matched with an optical axis of a lens system, after first and second Hall elements were properly positioned at the position in which magnetic force received by both of the Hall elements becomes a reference value by moving the first and second Hall elements to first and second directions, the other of the magnet and the coil supporting member are fixed to a supporting frame.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: May 20, 2008
    Assignee: Sony Corporation
    Inventor: Tatsuyuki Takahashi
  • Patent number: 7375899
    Abstract: A compact zoom lens includes, in order from an object side to an image side, a first lens group (1) of negative refractive power, and second, third, fourth and fifth lens groups (2, 3, 4, 5) of positive refractive power. The second, third and fourth lens groups are movable to effect zooming and focusing. During zooming from the telephoto end to the wide-angle end, the fourth lens group moves from the object side to the image side. The compact zoom lens has a long back focal length with various aberrations satisfactorily corrected, and a small F-number for enhanced image brightness.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: May 20, 2008
    Assignee: Asia Optical Co., Inc.
    Inventor: Chung-Yuan Kuo
  • Patent number: 7370964
    Abstract: An apparatus and method for measuring refractive characteristics of human eyes with an objective refraction measuring device for measuring refraction in at least one eye, the objective refraction measuring system having a proximal end and a distal end, the objective refraction measuring system suitable for looking in the proximal end and seeing out the distal end; an open field visual target. An open viewing lane is provided between the eye and the open field visual target, the viewing lane has sufficient length to allow for focusing the eye at infinity and for natural accommodation at true distance targets, such near distances such as reading distances. The objective refraction measuring device can be positioned in the viewing lane to measure the eye while the eye is focused on the open field visual target.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: May 13, 2008
    Assignee: Tracey Technologies, LLC
    Inventors: Youssef Wakil, Ioannis Pallikaris, Vasyl Molebny
  • Patent number: 7372633
    Abstract: An aberration correction device useable in lithography comprises two elements, at least one of which is relatively rotatable to the other about, for example, an optical axis. One surface of each element has an aspheric form describable by higher Zernike polynomials. When the two surfaces are rotationally aligned, the device has the optical effect of a plane plate. If there is a small relative rotation of the two elements the effect of the device is a phase shift describable by the derivative of the aspheric form. The correction device may be used to correct aberrations caused by lens heating, especially with illumination modes and pattern types resulting in strong off-axis localized pupil filling in the projection system.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: May 13, 2008
    Assignee: ASML Netherlands B.V.
    Inventors: Tammo Uitterdijk, Laurentius Catrinus Jorritsma
  • Patent number: 7367672
    Abstract: An apparatus for observing an eye of an examinee by imaging the eye, includes an irradiation optical system; an imaging optical system; a monitor; and a display control part, wherein the imaging optical system includes a wavefront detector which receives the beam reflected by the objective part to detect wavefront aberration thereof and a wavefront compensator adapted to compensate the wavefront aberration based on a detection result of the wavefront detector, the wavefront compensator being placed within an optical path of the imaging optical system excepting a common optical path with the irradiation optical system.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: May 6, 2008
    Assignee: Nidek Co., Ltd.
    Inventor: Junichi Akita
  • Patent number: 7365905
    Abstract: An optical system provides a lens cell having a generally cylindrical lens cell body and an optical lens system therein. The lens cell body has a lens cell central longitudinal axis and a lens cell optical axis, eccentrically offset from the lens cell central longitudinal axis. A sleeve has a generally cylindrical sleeve body, an outer surface with a first longitudinal axis, and an inner surface with a second longitudinal axis, eccentrically offset from the first longitudinal axis. The lens cell is inserted into the sleeve. A housing has a generally cylindrical body into which the sleeve is at least partially inserted. The lens cell and the sleeve are rotated relative to each other and to the housing such that the lens cell optical axis is aligned in a desired location. After the lens cell optical axis is aligned in the desired location, the lens cell is fixedly connected to the sleeve and the sleeve is connected to the housing to prevent rotation of the sleeve relative to the housing.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: April 29, 2008
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Michael R. Floyd, Steven A. Brillhart
  • Patent number: 7365925
    Abstract: A method of aligning an optomechanical assembly and an optomechanical assembly are described.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: April 29, 2008
    Assignee: Agilent Technologies, Inc.
    Inventors: Kenneth J. Wayne, Vijaya N. V. Raghavan
  • Patent number: 7365915
    Abstract: An exemplary optical module (100) includes a lens barrel (20), a lens group (40), a spacer (60), and a filter (80). The lens barrel has an inner wall (201), and at least two securing grooves (206) formed on the inner wall. The lens group and the spacer are disposed in the lens barrel. The spacer includes an annular base (601) and a predetermined amount of projecting blocks (603) formed on a same side of the base (601). At least two first bending portions (604) are formed on the blocks bending toward a center of the base, and at least two second bending portions (606) are formed on the blocks bending outwards from a center of the base. The second bending portions are configured to be secured in the securing grooves of the lens barrel. The filter is secured on the spacer by the first bending portions.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: April 29, 2008
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Kun-Jung Tsai