| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 356127000 | Optical center, cylinder axis, or prism measuring or determining | 18 |
| 20080204728 | METHOD AND APPARATUS FOR DETECTING CONCENTRICITY OF LENS MODULE - A detecting apparatus includes a light source configured (i.e., structured and arranged) for irradiating the lens module with light, the light being brought into a focus by the lens module; a detecting device configured for measuring and recording a location of the focus; and a driving device configured for driving a barrel of the lens module to rotate relative to a holder of the lens module. The detecting apparatus is particularly configured such that, when the driving device drives the barrel of the lens module to rotate to two different angular locations, the light source irradiates the lens module with light, the lens module making the light be brought into two respective focuses at (i.e., relative to) the two different angular locations, and the detecting device measures a deviation distance between the two respective focuses. A method of detecting concentricity of a lens module is further provided. | 08-28-2008 |
| 20080204729 | METHOD AND APPARATUS FOR DETERMINING AT LEAST ONE OPTICAL PROPERTY OF AN IMAGING OPTICAL SYSTEM - 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. | 08-28-2008 |
| 20080285019 | INTERFEROMETRY TESTING OF LENSES, AND SYSTEMS AND DEVICES FOR SAME - Modified MZ (Mach-Zender) interferometers preferably are utilized to analyze the transmitted, aspherical wavefront of an ophthalmic lens by mounting the lens in a cuvette having a rotatable carousel that can hold multiple lenses. Fresh, temperature controlled, saline solution is circulated about the lenses, and the cuvette is positioned in a vertical test arm of the interferometer configuration. Reverse raytracing preferably is utilized to remove aberrations induced into the wavefront as it is imaged from immediately behind the lens to the detector of the interferometer. | 11-20-2008 |
| 20080316470 | System for checking centration of lens surfaces of aspheric lens - A system for checking centration of lens surfaces of an aspheric lens includes a light-emitting device, a lens holder and an image processing device. The light-emitting device emits a light. The lens holder positions the aspheric lens in a light path of the light emitted from the light-emitting device. The image processing device receives the light which is emitted from the light-emitting device and has passed through the aspheric lens, and produces an image and shows the image. A quality of the image shown by the image processing device determines a tilt degree of the aspheric lens. | 12-25-2008 |
| 20090051904 | Apparatus for measuring decenter error of a lens - 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. | 02-26-2009 |
| 20130027692 | ECCENTRICITY MEASURING METHOD - 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 (S | 01-31-2013 |
| 20130265571 | SYSTEM AND METHOD FOR CALIBRATING ULTRA WIDE-ANGLE LENSES - 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. | 10-10-2013 |
| 20140071440 | APPARATUS AND METHOD FOR DETERMINING OPTICAL CENTER IN CAMERA MODULE - 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. | 03-13-2014 |
| 20140111796 | SYSTEM AND METHOD FOR MEASURING ECCENTRICITY OF FIBER LENS DEVICE - 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. | 04-24-2014 |
| 20140327905 | METHOD FOR DETECTING DEVIATION OF OPTIAL AXIS OF LENS AND METHOD FOR POSITIONING LENS TO LIGHT SOURCE - 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. | 11-06-2014 |
| 20140340673 | EYEGLASS LENS MEASURING APPARATUS, METHOD FOR DISTINGUISHING UPPER PORTION FROM LOWER PORTION OF EYEGLASS LENS, AND POINT MARKING ADAPTER - 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. | 11-20-2014 |
| 20140368813 | OPHTHALMIC LENS HOLDER FOR A CENTERING DEVICE - An ophthalmic lens holder ( | 12-18-2014 |
| 20150292977 | POINTING AXIS ESTIMATION DEVICE - A pointing axis estimation apparatus capable of removing pointing axis variations caused by factors other than pointing axis variations of a telescope, thereby estimating true pointing axis variations of the telescope. The pointing axis estimation apparatus includes: a laser light source-unit attitude detector for calculating translational and rotational displacements of a laser light source unit; an optical axis detection-unit attitude detector for calculating translational and rotational displacements of an optical axis detection unit; a pointing axis calculator for calculating a pointing axis based on information from an optical axis variation detector; and a pointing axis variation estimator for calculating a true pointing axis variation of a telescope based on displacement data output from the detectors and the calculator. | 10-15-2015 |
| 20150292979 | ANALYSING AND MACHINING AN OPTICAL PROFILE - An apparatus for analyzing at least one measured optical profile of a machined workpiece includes an analysis module configured to: receive nominal optical profile data representing a desired profile of a workpiece as designed in a current design step; receive a plurality of measured optical profile data corresponding to a plurality of machined workpieces; for each measured optical profile data, determine a difference between the measured optical profile data and the nominal optical profile data; remove non-systematic machining errors from the determined difference, by determining an average of the plurality of determined differences; and output the determined average, corresponding to errors on the profile due to machining which are systematic machining errors, to a design module, in order to enable the design module to take into account the systematic machining errors in a further design step of the desired workpiece. | 10-15-2015 |
| 20150323416 | METHOD AND DEVICE FOR MEASURING A DECENTRATION AND TILT OF FACES OF AN OPTICAL ELEMENT - 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. | 11-12-2015 |
| 20150323417 | System for Determining the Position of a Test Object - The invention relates to a system for determining the position of a test object comprising the following features: an autocollimation telescope having a beam source for emitting a beam; a beam splitter; a detector unit and an objective lens; and an optical element embodied as a focusing device, wherein the test object, the beam source and the focusing device are arranged along a common optical axis (z), and a control device for controlling the focusing device, which is designed in such a way that the beam can be focused onto a centre of curvature of a first test surface of the test object with the coordinates (x1, y1) and at least onto a centre of curvature of a second test surface of the test object with coordinates (x2, y2). | 11-12-2015 |
| 20160041063 | LIGHT SPOT CENTROID POSITION ACQUISITION METHOD FOR WAVEFRONT SENSOR, WAVEFRONT MEASUREMENT METHOD, WAVEFRONT MEASUREMENT APPARATUS AND STORAGE MEDIUM STORING LIGHT SPOT CENTROID POSITION ACQUISITION PROGRAM - The method enables acquiring centroid positions of light spots formed on an optical detector by multiple microlenses arranged mutually coplanarly in a wavefront sensor. The method includes a first step of estimating, by using known centroid positions or known intensity peak positions of first and second light spots respectively formed by first and second microlenses in the multiple microlenses, a position of a third light spot formed by a third microlens, a second step of setting, by using the estimated position of the third light spot, a calculation target area for a centroid position of the third light spot on the optical detector, and a third step of calculating the centroid position of the third light spot in the calculation target area. | 02-11-2016 |
| 20160187222 | MEASUREMENT OF THE POSITIONS OF CENTRES OF CURVATURE OF OPTICAL SURFACES OF A SINGLE- OR MULTI-LENS OPTICAL SYSTEM - A method for measuring the positions of centres of curvature of optical surfaces of a single- or multi-lens optical system, an imaging lens system simultaneously images an object plane into a first and a second image plane. The optical system is arranged so that a supposed position of a first centre of curvature is situated in the first image plane of the imaging lens system and a supposed position of a second centre of curvature is situated in the second image plane of the imaging lens system. An object arranged in the object plane is then imaged simultaneously or sequentially at the first and the second image plane by means of measuring light. Reflections of the measuring light at optical surfaces of the optical system are detected by means of a spatially resolving light sensor. The actual positions of the first and the second centre of curvature are calculated from the detected reflexes. | 06-30-2016 |
