Optical Center, Cylinder Axis, Or Prism Measuring Or Determining Patents (Class 356/127)
  • Patent number: 11340449
    Abstract: A method for designing an optical lens with unequal thickness, comprising the steps of: (1) establishing a lens model in an optical software; (2) simulating a beam of incident light, and observing whether the incident light and the exit light are parallel; (3) if the incident light and the exit light are parallel, recording the curvatures and thicknesses of the incident surface and the exit surface of the lens model, and preliminarily preparing a lens; if the incident light and the exit light are unparallel, adjusting the thickness between the incident surface and the exit surface of the lens model until the incident light and the exit light are parallel, then recording the curvatures and thicknesses of the incident surface and the exit surface, and then preliminarily preparing a lens; (4) verifying whether the prepared lens is qualified, and if it is unqualified, returning to step (2).
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: May 24, 2022
    Inventors: Wenliang Liao, Xiangjun Liao
  • Patent number: 10910786
    Abstract: The disclosure describes aspects of laser cavity optical alignment, and more particularly, in situ alignment of optical devices in an optical system for replacement or upgrade. In one aspect, a method for optical alignment in an optical system is described that includes providing, via a positioning system, an optical beam to measure surface features and position of a first device under test (DUT), removing the first DUT from the optical system, placing a second DUT in the optical system at substantially the same position from which the first DUT was removed, providing, via the positioning system, an optical beam to measure surface features and position of the second DUT, aligning the second DUT based on the measurements made of the first DUT and the second DUT, and verifying operation of the second DUT in the optical system. The DUT can be an optical device such as an output optical coupler.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: February 2, 2021
    Assignees: UNIVERSITY OF MARYLAND, COLLEGE PARK, lonQ, Inc.
    Inventor: Kai Hudek
  • Patent number: 10852817
    Abstract: Techniques for eye-tracking in a near-eye display system are disclosed. One example of a near-eye display system includes a waveguide-based display substrate transparent to visible light and configured to be placed in front of a user's eye. The waveguide-based display substrate includes a first light deflector configured to direct a first portion of invisible light reflected by the user's eye to a camera to form a first image of the user's eye in a first area of an image frame, and a second light deflector configured to direct a second portion of the invisible light reflected by the user's eye to the camera to form a second image of the user's eye in a second area of the image frame.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: December 1, 2020
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: Andrew John Ouderkirk, Robert Dale Cavin, Alexander Jobe Fix, Ying Geng, Elias Daniel Guestrin, Karol Constantine Hatzilias, Robin Sharma, Yusufu Njoni Bamaxam Sulai
  • Patent number: 10715788
    Abstract: Methods and apparatus for aligning components of camera assemblies of one or more camera pairs, e.g., a stereoscopic camera pairs, are described. A camera calibration tool referred to as a camera bra is used. Each dome of the camera bra includes a test pattern, e.g., grid of points, with the domes being aligned and spaced apart by a predetermined amount. The bra is placed over the cameras of a camera pair, the grids are detected and displayed. The camera component positions are adjusted until the displayed images show the grids as being properly aligned. Because the grids on the calibration tool are properly aligned as a result of the manufacturing of the calibration tool, when the images are brought into alignment the cameras will be properly spaced and aligned at which point the calibration tool can be removed and the stereoscopic camera pair used to capture images of a scene.
    Type: Grant
    Filed: July 15, 2017
    Date of Patent: July 14, 2020
    Assignee: NextVR Inc.
    Inventor: Ryan Michael Sheridan
  • Patent number: 10514255
    Abstract: The present invention provides: a rotary encoder checking an eccentricity state of a scale by sensor units; and related matters. The scale moves, relatively to the sensor units, around a rotational axis line. The pair of sensor units are arranged opposite to each other sandwiching the rotational axis line C0 therebetween. A processing system acquires output signals from each of the sensor units, at a plurality of rotation angles at which the scale has moved relatively to the sensor units. The processing system determines first phase information based on the output signal obtained from the sensor unit, and second phase information based on the output signal obtained from the sensor unit. The processing system determines eccentricity information based on a differential value between any one of the first phase information and the second phase information and an average value of the first phase information and the second phase information.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: December 24, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Haruhiko Horiguchi
  • Patent number: 10456885
    Abstract: Method for providing a referencing element to an optical lens member. An optical lens member is provided which has a first optical surface, with a surface design associated with a first reference system, and a second optical surface to be manufactured. The first and second optical surfaces are connected by an external periphery surface. The first optical surface of the optical lens member is measured, and the first reference system is determined. The reference system is determined according to the shape and orientation of the first optical surface. A referencing element is added to the optical lens member, with the referencing element identifying the first reference system.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 29, 2019
    Assignee: Essilor International
    Inventors: Frederic Dubois, Sebastien Maurice
  • Patent number: 9952118
    Abstract: According to one aspect, an eccentricity amount obtainment method is a method of obtaining shift eccentricity amounts of lens frames through in a lens barrel that includes the plurality of lens frames having lens cells, the eccentricity amount obtainment method including arranging, in each of the lens cells, a flat plate member on which an index is formed and which has optical transparency and arranging the lens frames in the lens barrel in a prescribed order so as to assemble an assembly, a emitting illumination light to the flat plate members, obtaining pieces of information related to positions of the indexes formed on the flat plate members, and obtaining, as the shift eccentricity amounts of the lens frames, the positional displacement amounts with respect to the indexes formed on the flat plate members with respect to an arbitrary position.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: April 24, 2018
    Assignee: OLYMPUS CORPORATION
    Inventor: Kanato Adachi
  • Patent number: 9797833
    Abstract: A method for determining a refractive power of a large-surface-area transparent object, such as a windshield, a visual aid, a cockpit glazing, a helmet visor, or the like, includes detecting a first imaging of a first line grating through the transparent object at at least one predetermined point of the object using a camera and determining a line spacing of the first imaging, the rotation of the lines relative to the first line grating or both through use of a computing unit on the basis of the first imaging at the at least one specified point and using the line spacing or rotation of lines to determine the refractive power at the at least one predetermined point of the transparent object.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: October 24, 2017
    Assignee: ISRA SURFACE VISION GMBH
    Inventor: Paul Weigt
  • Patent number: 9694465
    Abstract: A blocking device and a method for blocking of eyeglass lenses on blocking pieces with a base body, with a blocking piece receiver which is located on the base body for the blocking piece which is to be attached to the eyeglass lens and with a positioning unit which is located on the base body for aligning and holding the eyeglass lens which is to be blocked, the blocking piece receiver and the positioning unit can be fixed on the eyeglass lens by activation being movable relative to one another via a lifting axis, the approach motion between the positioning unit and the blocking piece receiver being limited in the direction of the lifting axis by an adjustable stop means in at least two positions.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: July 4, 2017
    Assignee: Schneider GmbH & Co. KG
    Inventors: Gunter Schneider, Ulf Börner
  • Patent number: 9551571
    Abstract: A method and device for measuring a decentration and tilt of faces of an optical element is provided. At least all optically used and frame-relevant partial surfaces of a surface of the optical element and reference faces of the optical element are registered over the whole area thereof and referenced to one another in a common coordinate system, wherein in each case a surface form deviation of the partial surfaces and reference faces is established relative to an associated intended surface, wherein a location of the partial surfaces and reference faces is established in each case in the common coordinate system from the respective surface form deviation. At least one tilt and at least one decentration are established from the location as a function of a form of the respective partial surface and reference face in the coordinate system.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: January 24, 2017
    Assignee: Asphericon GmbH
    Inventor: Sven Kiontke
  • Patent number: 9030671
    Abstract: A measuring assembly for measuring an inside of a lens frame of a spectacle frame, said lens frame at least partially delimiting an inscribed surface area F that corresponds to a lens shape, comprising a holding device for mounting the spectacle frame, at least one light source for generating a light beam to be projected on a region of the lens frame to be evaluated, and at least one sensor that can be coupled to an evaluation unit for detecting the reflected light beam, wherein the holding device can be rotated about a rotational axis r and moved in the direction of a movement axis x, and the movement axis x comprises at least one movement component in a direction perpendicular to the rotational axis r. The holding device is used to fix the spectacle frame by spectacle frame bows, wherein at least one free space is provided in the region of the holding device, said free space being used to receive the spectacle frame bows of a spectacle frame to be held which are not folded in or cannot be folded in.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: May 12, 2015
    Assignee: Schneider GmbH & Co. KG
    Inventors: Gunter Schneider, Torsten Gerrath, Ulf Boerner
  • Patent number: 8947649
    Abstract: An apparatus and method for determining optical center in camera module are provided, the method for determining optical center in camera module according to an exemplary embodiment comprising receiving a target image from a camera module including a lens; generating an error data, which is a difference between a pixel value of the target image and a pixel value of a Gaussian distribution image; and determining the optical center of the lens based on the error data.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: February 3, 2015
    Assignee: LG Innotek Co., Ltd.
    Inventor: Sejin Park
  • Patent number: 8941822
    Abstract: A clamping device includes a first plate and a second plate. The first plate includes an upper surface, a lower surface facing away from the upper surface and a first side surface. The upper surface is substantially parallel with the lower surface. The first side surface perpendicularly connects the upper surface and the lower surface. The first plate defines a receiving cavity at a joint of the upper surface and the first side surface. The second plate is detachably connected to the first plate. The second plate includes a top surface and a second side surface. The second side surface perpendicularly connects to the top surface. The second plate defines a sloped surface extending from the top surface to the second side surface. The sloped surface aligns with the receiving cavity. The second plate includes a reflective layer positioned on the sloped surface.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: January 27, 2015
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chang-Wei Kuo
  • Patent number: 8928870
    Abstract: A lens meter includes a measurement optical system having a light source, measurement target plate, and light receiving sensor. A lens table has an opening where a measurement optical axis of the measurement optical system passes. A frame support member includes a support plate that contacts a left rim and right rim of a spectacle frame. The support plate is moved toward the lens table by a guide mechanism. The frame support member further includes a cutout portion in the support plate that allow the lens, placed on the lens table, to measure a point near an edge of the lens located on the support plate side. A pad contacts and prevents the rim from entering the cutout portion. The pad is provided in at least a part of the cutout portion. A pad moving mechanism moves the pad from the contact surface.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: January 6, 2015
    Assignee: Nidek Co., Ltd.
    Inventors: Noritsugu Nozawa, Hikaru Miyabayashi
  • Publication number: 20140368813
    Abstract: An ophthalmic lens holder (1), includes a pedestal (10) and at least three contact pads (30) that rise from the pedestal such as to have substantially coplanar free ends (31), whereby the contact pads are suitable for bearing the ophthalmic lens. The holder has at least three through-openings (25) of axes (A1) substantially orthogonal to the plane of the free ends of the three contact pads.
    Type: Application
    Filed: November 20, 2012
    Publication date: December 18, 2014
    Applicant: ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D'OPTIQUE
    Inventors: Andrea Molinaro, Jerome Pernot, Hughes Ameurlain, Laurent De Sadeleer
  • Publication number: 20140340673
    Abstract: An eyeglass lens measuring apparatus includes a measuring optical system configured to measure optical properties of an eyeglass lens for the right eye and optical properties of an eyeglass lens for the left eye; and a point marking mechanism including a first point marking member configured to provide a first mark point defining an optical center and an astigmatic axis of the eyeglass lens which are acquired by using the measuring optical system, and a second point marking member configured to provide a second mark point defining an upper portion and a lower portion of the eyeglass lens, wherein the point marking mechanism is configured to provide the eyeglass lens for the right eye and the eyeglass lens for the left eye respectively with the second mark points almost the same in position.
    Type: Application
    Filed: March 27, 2014
    Publication date: November 20, 2014
    Applicant: NIDEK CO., LTD.
    Inventor: Motoshi Tanaka
  • Publication number: 20140327905
    Abstract: A method for detecting deviation of an optical axis of a lens is disclosed. Firstly, a lens is provided. The lens includes a light incident face and multiple legs surrounding the light incident face. A camera is used to capture images of the incident face and the legs. Two circles are then depicted according to the images. Two centers of the two circles are determined to obtain a deviation distance between the two centers.
    Type: Application
    Filed: August 13, 2013
    Publication date: November 6, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHANG-WEI KUO
  • Patent number: 8854611
    Abstract: A method comprises providing a lens blank, a precision positioning device, an illumination device, and a vision system, wherein the lens blank includes at least one feature whose position is known relative to a position of an optic center of the lens blank, and wherein the vision system comprises an image sensor and a processor; mounting the lens blank on the precision positioning device; illuminating the lens blank with the illumination device; viewing the lens blank with image sensor of the vision system; determining the position of the at least one feature using the processor; and determining the position of the optic center of the lens blank based on the position of the at least one feature using the processor.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: October 7, 2014
    Assignee: Benz Research and Development Corporation
    Inventors: Patrick H. Benz, Andrew Larson, Stephen E. Brauner
  • Patent number: 8733931
    Abstract: A method of determining binocular performance of a pair of spectacle lenses comprises: a eyes characteristics providing step, a pair of spectacle lenses providing step, a environment providing step, a cyclopean eye positioning step, a binocular performance criteria defining step, and a binocular performance criteria determining step, wherein the cyclopean eye position is customized.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: May 27, 2014
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Soazic Mousset, Cecile Petignaud, Claude Pedrono, Agnes Ladous, Bruno Amir, Aude Contet
  • Patent number: 8724103
    Abstract: A method and apparatus provide identification of a spherical error of a microscope imaging beam path in a context of microscopic imaging of a sample using a microscope having an objective. A coverslip that carries or covers the sample is arranged in the imaging beam path. A measurement beam is guided through the objective onto the sample in a decentered fashion that is outside an optical axis of the objective. The measurement beam is reflected at an interface of the coverslip with the sample and the reflected measurement beam is guided through the objective onto a detector. An intensity profile of the reflected measurement beam is detected with the detector and a presence of a spherical error from the intensity profile is determined qualitatively and/or quantitatively.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: May 13, 2014
    Assignee: Leica Microsystems CMS GmbH
    Inventors: Werner Knebel, Tobias Bauer, Peter Euteneuer
  • Publication number: 20140111796
    Abstract: A system for measuring an eccentricity of a fiber lens device includes a measuring fixture, an image capturing device and an analysis device. The fiber lens device includes a lens and a fiber receiving hole. The measuring fixture includes a measuring surface defining an insertion hole and three measuring holes arranged in vertexes of an equilateral triangle. The measuring fixture further includes a rod in the insertion hole. A circumcenter of the equilateral triangle formed by the three measuring hole is concentric with the rod, and the rod is configured for being inserted into the fiber receiving hole. The image capturing device is configured for capturing an image of the measuring fixture and the fiber lens device. The analysis device is configured for analyzing the image to acquire a distance between the circumcenter and a center of the lens, and determining whether the distance is in a predetermined range.
    Type: Application
    Filed: December 4, 2012
    Publication date: April 24, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHANG-WEI KUO
  • Patent number: 8705587
    Abstract: A laser resonator and method for forming the laser resonator are provided. The method comprises placing a housing for the laser resonator in an alignment fixture, attaching a bond plate to an optical component of the laser resonator, attaching a first end of an alignment arm to the bond plate attached to the optical component, attaching a second end of the alignment arm to the alignment fixture such that the optical component is disposed over the housing, aligning, via the alignment fixture and the alignment arm, the optical component relative to the housing, and bonding the aligned optical component to the housing. The first end of the alignment arm may removed once the aligned optical component is bonded to the housing.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: April 22, 2014
    Assignee: DRS RSTA, Inc.
    Inventors: Edward Joseph Adamkiewicz, Carlos Avila
  • Publication number: 20140071440
    Abstract: An apparatus and method for determining optical center in camera module are provided, the method for determining optical center in camera module according to an exemplary embodiment comprising receiving a target image from a camera module including a lens; generating an error data, which is a difference between a pixel value of the target image and a pixel value of a Gaussian distribution image; and determining the optical center of the lens based on the error data.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 13, 2014
    Applicant: LG INNOTEK CO., LTD.
    Inventor: Sejin PARK
  • Patent number: 8665425
    Abstract: In an eccentricity measuring method according to the present invention, a first position of a light source image formed by reflection at one optical surface is measured (S2), a predetermined second position related to another optical surface is measured (S3), and a relative eccentricity between both optical surfaces is calculated based on the first and second positions (S5). Therefore, the eccentricity measuring method enables measurement of eccentricity by a same measurement optical system regardless of a radius of curvature of an optical surface of an optical element.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: March 4, 2014
    Assignee: Konica Minolta Advanced Layers, Inc.
    Inventors: Kazuyuki Ogura, Masahiro Okitsu, Youichi Ogawa, Kyu Takada
  • Patent number: 8659751
    Abstract: Disclosed are an ambient light reflection determination apparatus and an ambient light reflection determination method enabling to determine reflection without using an edge and even in a case where luminance of a reflection generating part in eyeglasses is low. In a reflection determination apparatus (100), a luminance histogram calculation section (102) calculates a luminance histogram representing a luminance distribution of an eye area image, a difference calculation section (104) calculates a difference histogram by finding a difference between the two luminance histograms calculated from the two eye area images having different photographing timings, an evaluation value calculation section (105) calculates an evaluation value regarding reflection of ambient light based on the difference histogram and a weight in accordance with luminance, and a reflection determination section (107) determines the reflection of ambient light based on the calculated evaluation value.
    Type: Grant
    Filed: June 7, 2011
    Date of Patent: February 25, 2014
    Assignee: Panasonic Corporation
    Inventors: Sotaro Tsukizawa, Kenji Oka
  • Patent number: 8619248
    Abstract: Systems and methods for obtaining mapping of Ultra Wide-Angle (UWA) lenses are disclosed. Captured image of a set of grid points on the inner surface of a precision made calibration dome is used as an input image. Image processing techniques are used to identify components of the image and compute the lens mapping. The lens mapping can be used to calibrate the lens against a standard or against other lenses. The mapping can further be used for perspective correction applications.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: December 31, 2013
    Assignee: Geo Semiconductor Inc.
    Inventors: Zorawar Singh Bassi, Ashkan Alavi-Harati
  • Publication number: 20130265571
    Abstract: Systems and methods for obtaining mapping of Ultra Wide-Angle (UWA) lenses are disclosed. Captured image of a set of grid points on the inner surface of a precision made calibration dome is used as an input image. Image processing techniques are used to identify components of the image and compute the lens mapping. The lens mapping can be used to calibrate the lens against a standard or against other lenses. The mapping can further be used for perspective correction applications.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 10, 2013
    Applicant: GEO SEMICONDUCTOR INC.
    Inventors: Zorawar Singh BASSI, Ashkan ALAVI-HARATI
  • Patent number: 8502965
    Abstract: A device for measuring eccentricity of a lens includes a support portion, an eccentricity detector, a driving device, a vacuum absorption device, a clamping device, and a rotatable pole. The support portion includes a plurality of gear teeth and a first through hole. The eccentricity detector is positioned above the lens. The driving device includes a driving mechanism and a motor. The motor rotates the driving mechanism. The vacuum absorption device includes an air pipe and a vacuum generation element. The vacuum generation element is for removing air from the air pipe. The clamping device includes a first clamping element and a second clamping element. The first clamping element cooperates with the second clamping element to locate and fix the lens. The rotatable pole includes a second through hole. The rotatable pole is for supporting the support portion.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: August 6, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Yuan-Lung Kuo
  • Patent number: 8467043
    Abstract: An apparatus for testing a lens module includes a light source, a recording element, and an analyzing device. The lens module includes an actuator and a barrel. The light source emits a light beam towards the barrel. The light beam is reflected by the barrel and forms a light spot on the recording element. The recording element records a position of the light spot. The analyzing device calculates a distance between the position of the light spot and a reference position, compares the distance with a predetermined value, and determines whether the distance is larger than the predetermined value. If the distance is less than or equal to the predetermined value, the analyzing device determines that the lens module is satisfactory. If the distance is larger than the predetermined value, the analyzing device determines that the lens module is unsatisfactory.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: June 18, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Hsin-Hung Chuang
  • Patent number: 8422004
    Abstract: A headlamp aiming system is provided for aiming a headlamp of a vehicle. An aimer includes a CCD camera for receiving illumination produced by the headlamp to produce a beam pattern image. A controller receives the beam pattern image from the aimer to determine an aiming correction to move the detected beam pattern to a predetermined position. An adjuster is operatively coupled to the vehicle for executing adjustments of the headlamp in response to the aiming correction. The CCD camera captures an initial image using an initial exposure time, measures a light accumulation value corresponding to the initial image, determines a final exposure time in response to the measured light accumulation value and a predetermined light accumulation value, and captures the beam pattern image using the final exposure time.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: April 16, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Albert Ekladyous, John W. Wilds, Arun Kumar, Venkatesan Balaraman, Sleiman N. Abdelnour, Mahendra S. Dassanayake, Candace C. Glasgow
  • Patent number: 8422005
    Abstract: Various embodiments provide an optical alignment apparatus that includes a mirror structure having a plurality of mirrors, the mirror structure being configured for mounting a lens. The plurality of mirrors are arranged so as to redirect a collimated beam of radiation into the lens at different angles so as to measure one or more alignment parameter of the lens.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: April 16, 2013
    Assignee: Raytheon Company
    Inventors: Joseph F. Borchard, William H. Wellman
  • Patent number: 8386203
    Abstract: An evaluation method of a progressive-addition lens is provided. First, powers of the progressive-addition lens at a plurality of measurement points are measured to obtain an actually measured power distribution. Next, a comparison power distribution created based on the actually measured power distribution and a defective power distribution prepared in advance are compared with each other to perform similarity search between the both. Thereafter, whether or not the comparison power distribution and the defective power distribution are similar to each other is determined based on the result of the similarity search step, and if it is determined that the comparison power distribution and the defective power distribution are similar to each other, then the progressive-addition lens is evaluated as defective.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: February 26, 2013
    Assignee: Hoya Corporation
    Inventor: Kazuma Kozu
  • Publication number: 20130027692
    Abstract: In an eccentricity measuring method according to the present invention, a first position of a light source image formed by reflection at one optical surface is measured (S2), a predetermined second position related to another optical surface is measured (S3), and a relative eccentricity between both optical surfaces is calculated based on the first and second positions (S5). Therefore, the eccentricity measuring method enables measurement of eccentricity by a same measurement optical system regardless of a radius of curvature of an optical surface of an optical element.
    Type: Application
    Filed: April 5, 2011
    Publication date: January 31, 2013
    Inventors: Kazuyuki Ogura, Masahiro Okitsu, Youichi Ogawa, Kyu Takada
  • Patent number: 8350202
    Abstract: A method for adjusting and testing an image sensor module is provided. The method of the present invention includes steps of: (1) calculating longitudinal and transverse deviation values of a center point of a lens relative to a standard reference position specified on a lens barrel, and an angle deviation value of the lens according to position signals of the lens on the image sensor module; (2) compensating the longitudinal and transverse deviation values of the center point of the lens, and the angle deviation value of the lens for exactly positioning the lens; and (3) adjusting focus of the image sensor module. The method of the present invention can compensate the mechanism errors produced in the mounting process of the image sensor module for conveniently and exactly adjusting the focus of the image sensor module. An apparatus for adjusting and testing an image sensor module is also provided.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: January 8, 2013
    Assignee: Cheng Uei Precision Industry Co., Ltd.
    Inventors: Han-wei Wang, Tsai-sheng Shen, Jung-kuang Liu
  • Patent number: 8294885
    Abstract: An auxiliary device for measuring the coaxiality of a lens. The auxiliary device includes a cylindrical main body having a first surface and a flat second surface facing away the first surface, and a protrusion formed on the first surface and defining a reference convex surface. The second surface of the main body defines a position part. The position part is coaxial with the reference convex surface and configured to engage with the lens to measure the coaxiality of the lens.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: October 23, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Tsung-Yu Lin
  • Patent number: 8226238
    Abstract: An article for performing a subjective refraction includes a lens having a mean power that varies across the lens in a first direction and a cylindrical power that varies across the lens in a second direction, orthogonal to the first direction, wherein the mean power varies by four diopters or more and the cylindrical power varies by four diopters or more.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: July 24, 2012
    Assignee: Carl Zeiss Vision Inc.
    Inventor: Ray Steven Spratt
  • Patent number: 8174687
    Abstract: A device for measuring at least one camber geometrical characteristic of an ophthalmic lens provided on at least one of its faces with at least one position-identifying mark, the device including a support for the ophthalmic lens, and on opposite sides of the support, firstly lighting element for lighting the ophthalmic lens along at least two different lighting directions, and secondly acquisition and analysis element for acquiring and analyzing the light transmitted by the ophthalmic lens, the analysis element being adapted to identify shadows of the mark when lighted in the at least two lighting directions, and to deduce from their positions a measured value for the camber geometrical characteristic of the ophthalmic lens.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: May 8, 2012
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Stephane Boutinon, Philippe Pinault
  • Patent number: 8169603
    Abstract: One embodiment of the invention provides a lens-testing apparatus being used for testing a lens device. The lens-testing apparatus comprises a light module, at least one first and second image sensors, and at least one image sensor module. The light module generates a patterned light beam passing the lens device. The first and second image sensors receive first and second portions of the patterned light beam; the first image sensor is disposed between the second image sensor and the lens device. The image sensor module receives a substantially parallel third portion of the patterned light beam, and comprises a third image sensor and a collimator. The third portion of the patterned light beam is focused onto the third image sensor by the collimator; the distance between the first image sensor and the lens device is smaller than the distance between the second image sensor and the lens device.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: May 1, 2012
    Assignee: UMA Technology Inc.
    Inventors: Chang Yuan Lee, Wen Wen Teng, Chungying Kuo
  • Patent number: 8085392
    Abstract: An ophthalmic device forming system includes an inspection station configured to receive a plurality of ophthalmic devices, a fluid supply fluidly connected to the inspection station, the fluid supply containing a working fluid, and a heat source fluidly connected between the fluid supply and the inspection station. The heat source includes a housing, a transfer element, and a low pressure gas region defined by the housing adjacent to the transfer element.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: December 27, 2011
    Assignee: Bausch & Lomb Incorporated
    Inventor: Kevin D. Beebe
  • Patent number: 8009281
    Abstract: A lens module distortion measuring system configured to measure the distortion of a lens module including: a light source configured to emit light rays; a diffusing panel configured to diffuse the light rays; a substantially opaque shielding plate beneath the diffusing panel, the shielding plate defining a regular matrix of light-passing holes capable of allowing some of the diffused light rays to pass therethrough; an image capturing device configured to capture a image of the shielding plate as viewed through the lens module, the image comprising an array of light spots corresponding to the light-passing holes; and a computing unit electrically connected to the image capturing device and configured to analyze the light spots of the image and thereby determine the distortion of the lens module.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: August 30, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Jen-Tsorng Chang
  • Patent number: 7969563
    Abstract: A lens measuring device and method applied therein. The lens measuring device includes a light source, a first polarizer, a second polarizer, and an image analysis module. The method includes enabling the light source to orderly pass through the first polarizer, a lens to be measured, and the second polarizer to generate a light beam to be measured, and then enabling the image analysis module to analyze image-related information of the light beam to be measured, consequently deducing the structural center and energy distribution of the lens to be measured, and then further analyzing errors in polarity and skewness of the lens to be measured. By applying a common light source, the method is spared complicated correction that is otherwise required when a conventional collimating laser light source is applied, and the method can also easily and simultaneously test a plurality of lenses to be measured.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: June 28, 2011
    Assignees: National Taiwan University, National Applied Research Laboratories
    Inventors: Chien-Ching Ma, Ching-Yuan Chang, Kuo-Cheng Huang, Shih-Feng Tseng
  • Patent number: 7944553
    Abstract: A method and system for measuring an optical property of a multi-focal lens are disclosed. One embodiment of the method comprises: filtering out light transmitted by all but one of a plurality of diffraction orders of the lens to provide an unfiltered light from a single diffraction order; receiving the unfiltered light at a wavefront detector; and analyzing the unfiltered light at the wavefront detector to measure the optical property. The multi-focal lens can be a multi-focal diffractive intra-ocular lens. The measured optical property can be a discontinuity in the lens surface. Filtering can comprise blocking all but the unfiltered light using an aperture operable to let through the unfiltered light from the single diffraction order, and/or blocking all but the unfiltered light using an opaque obstruction operable to let through only a selected amount of light corresponding to the light transmitted by the single diffraction order.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: May 17, 2011
    Assignee: Alcon, Inc.
    Inventors: Michael J. Simpson, Jihong Xie
  • Patent number: 7880869
    Abstract: A calibration apparatus and method for optical system assembly is provided, applicable to a finite conjugate optical system to determine the optimal image-forming positions of the light source and the focus object lens of the finite conjugate optical system. The apparatus includes an external light source, a low magnification image-forming optical system, an electrical control system and a monitor. When the parallel beam generated by the external light source is parallel to the optical axis of the finite conjugate optical system, the low magnification image-forming optical system is used to magnify the two focal spots formed by the external light source and the internal light source of the finite conjugate optical system to be calibrated. Finally, by adjusting the related position of the focus object lens or the internal light source of the finite conjugate optical system, the optimal relative positions between the light source and the focus object lens of the finite conjugate optical system can be found.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: February 1, 2011
    Assignee: TopRay Technologies, Inc.
    Inventors: Tsung-Min Yang, Wei-Chih Lu
  • Patent number: 7792366
    Abstract: An optical element to be measured is irradiated with the light which has passed through an indicator, thereby to form an indicator image on an image pick-up surface. Maximum peak coordinates are specified and stored as a position of the indicator image relating to the first surface. Whether the second largest peak may be specified or not is determined. In case that this result is NO, the maximum peak indicator image is deleted, and maximum peak coordinates are specified again and stored as a position of the indicator image relating to the second surface.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: September 7, 2010
    Assignee: Fujinon Corporation
    Inventors: Zongtao Ge, Kenichi Takahashi
  • Patent number: 7760345
    Abstract: A method and an apparatus for determining at least one optical property of an imaging optical system which is designed to image an object disposed in an object plane of the optical system into an assigned image plane. The method includes disposing at least one test structure in the object plane of the optical system, disposing an image recording device in at least two different positions relative to the image plane of the optical system, in each of the at least two relative positions the image recording device being offset in relation to the image plane to such an extent that an image of the pupil of the optical system is produced respectively on the image recording device by the optical system by means of the test structure, and recording an image produced on the image recording device by the optical system by means of the test structure in each of the at least two relative positions by means of the image recording device.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: July 20, 2010
    Assignee: Carl Zeiss SMT AG
    Inventors: Matthias Manger, Markus Goeppert, Gordon Doering, Alfred Gatzweiler
  • Patent number: 7742159
    Abstract: An apparatus for checking concentricity between a barrel holder and a lens barrel rotatably engaging with the barrel holder is provided. The lens barrel includes at least one lens coaxially received therein. The apparatus includes a barrel holder retaining member, a rotating member, a driving unit, a light source, and an image sensor. The barrel holder retaining member is used for fixedly retaining the barrel holder in position. The rotating member is structured for meshing with the lens barrel. The driving unit is used for driving the rotating member to rotate, thereby rotates the lens barrel. The light source is configured for emitting light toward a first end of the lens barrel. The image sensor is arranged to face toward an opposite second end of the lens barrel. The image sensor is configured for sensing the light emitted from the light source.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: June 22, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shih-Chieh Yen
  • Patent number: 7728974
    Abstract: An enhanced detection system can eliminate use of a sheath fluid by selecting which particles that pass through an sensing region to detect parametric characteristics thereof based upon position of each particle while it is in a sensing region relative to one or more predetermined positions, such as an in-focus position relative to one or more light beams directed into the sensing region, to enhance accuracy and robustness of particle parametric characteristics detection.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: June 1, 2010
    Assignee: Cytopeia, Inc.
    Inventor: Gerrit van den Engh
  • Patent number: 7701562
    Abstract: A method of measuring a front surface profile and a back surface profile of a target object includes: mounting the target object in such a posture that a first measuring surface (front surface) is measurable by a probe; first measuring a contour of the target object; measuring the first measuring surface of the target object; reversing the target object; second measuring the contour of the target object with the reversed posture of the target object being maintained; obtaining a measurement position of a second measuring surface by comparison of contour data obtained through the first and second measuring of the contour, the measurement position of the second measuring surface corresponding to a measurement position of the first measuring surface at which the measuring of the first measuring surface is conducted; and measuring a profile of the second measuring surface along the obtained measurement position of the second measuring surface.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: April 20, 2010
    Assignee: Mitutoyo Corporation
    Inventors: Kentaro Nemoto, Masaoki Yamagata
  • Patent number: 7701563
    Abstract: A lens decenter error measuring apparatus including a testing device, a lens supporter, and a lens carrier is disclosed. The testing device is configured for measuring a decenter error of a lens. The lens supporter is configured for receiving the lens. The lens carrier is installed within the lens supporter and includes at least three spheres and an elastic member. The spheres associated with the elastic member constrain the lens when the lens is placed in the lens supporter.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: April 20, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Sheng-An Wang, Ming-Shan Chan
  • Patent number: 7688431
    Abstract: The invention relates to an apparatus for comparatively demonstrating the optical properties of eyewear lenses, particularly dispersion. The apparatus includes an illumination source that provides output of shorter wavelength visible light and longer wavelength visible light, a target that creates an image on the light path, a test lens made of eyewear lens material that is illuminated by the light path from the target, and a detector that displays the image acted upon and transmitted through the test lens. The test lens can be interchangeably replaced with another test lens, for comparison of each lens' optical properties. Alternate configurations include multiple light paths, for simultaneous viewing of images through different test lenses.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: March 30, 2010
    Assignee: Younger Mfg. Co.
    Inventors: Thomas A. Balch, John M. Tamkin, Nancy L. S. Yamasaki, Jotinderpal S. Sidhu