Patents
Patents for G01M 11 - Testing of optical apparatus; Testing structures by optical methods not otherwise provided for (14,356)
01/1999
01/12/1999US5859939 Method and system for equalizing PMD using incremental delay switching
01/12/1999US5859695 Method of and system for characterization of fiber optic connections in situ
01/12/1999CA2033045C Device for calibrating of an optical instrument and related applications
01/07/1999EP0889312A2 Apparatus for measuring characteristics of optical fiber
01/07/1999DE19724676A1 Measuring apparatus for determining polarisation mode dispersion of optical elements e.g. glass fibre conductors
01/05/1999US5856867 Method and apparatus for determining the pressure-induced nonreciprocity of a fiber-optic coil
01/05/1999US5855074 Methods and apparatus for measuring and mapping opthalmic elements
01/05/1999CA2075961C Optical test apparatus
12/1998
12/30/1998EP0887954A2 Noise figure measurement of optical amplifiers by power substitution
12/30/1998EP0887624A2 Device and method for optical fiber distortion measurement
12/29/1998CA2129292C Integrated optical waveguide circuit and optical branch line test system using the same
12/24/1998DE19821432A1 Distance correction method for reflectometer
12/23/1998WO1998058231A1 Device for detecting variations in the length of components by means of optical waveguides
12/23/1998EP0886396A1 Method of manufacturing a fiber optic cable having a specified path average dispersion
12/23/1998EP0886394A1 Method for fault locating by reflectometry in an optical transmission link and locating apparatus using this method
12/23/1998CN2301721Y Photoelectric car light illuminancy tester
12/23/1998CN1202964A Composite structure resin cure monitoring using an optical fiber grating sensor
12/22/1998US5852496 Method and device for measuring polarization dispersion of an optical fiber
12/17/1998WO1998057138A1 Measuring device and method for determining the non-linear refraction index coefficient of an optical transmission link
12/17/1998DE19826385A1 Shape measurement method for lenses, mirrors or other optical elements
12/17/1998DE19725183A1 Glass fibre core eccentricity evaluation method
12/16/1998CN2300902Y Signal indicating adjuster
12/15/1998US5850283 Determination of angular position of weak axial asymmetries of optical fibers and alignment of and splicing fibers
12/15/1998CA2144106C Method of adjusting optical axis of headlight of vehicle
12/09/1998EP0882970A1 Inspection system for optical components
12/09/1998EP0882969A1 Inspection system for optical components
12/08/1998US5847819 Lens meter utilizing three different wavelengths
12/02/1998CN1041018C L-Fizeau interferomter for detecting large laser amplifier
12/01/1998US5844672 Method for comparing lens distortion between two steppers
12/01/1998US5844671 Lens meter
12/01/1998US5844670 Method of and systems for measuring eccentricity of an aspherical lens surface
12/01/1998US5844235 Optical frequency domain reflectometer for use as an optical fiber testing device
11/1998
11/26/1998WO1998053538A1 Optical amplifier evaluation method and optical amplifier evaluation device
11/26/1998WO1998053305A1 Methods and apparatus for detecting surface defects of an optical fiber
11/26/1998WO1998053287A1 Absorption tester for optical components
11/26/1998CA2288765A1 Methods and apparatus for detecting surface defects of an optical fiber
11/25/1998EP0880112A2 Method for validation of a hologram and reader for carrying out this method
11/24/1998US5841592 Optical bench and use thereof
11/24/1998US5841525 Method and apparatus for performing modulation transfer function tests on endoscopes
11/24/1998US5841034 Bonded joint analysis
11/19/1998DE19720665A1 Device for inspecting and testing glass bodies and surfaces
11/19/1998DE19720307A1 Flaw detector for continuous detection of surface flaws in copper@, aluminium@ or brass
11/12/1998DE19713979C1 Verfahren und Vorrichtung zur Zugprüfung von verspleißten Fasern in Faserspleißgeräten Method and apparatus for tensile testing of spliced ​​fibers in Faserspleißgeräten
11/11/1998EP0877241A2 An apparatus for measuring an optical characteristic of an examined lens
11/11/1998EP0876874A2 Apparatus for centering and blocking an ophthalmic lens disc
11/11/1998EP0876597A1 A retro-reflective measuring apparatus
11/10/1998US5835656 Light-transmitting fiber and resin coating layer with surface defects applied with a sandpaper roller while running the fiber; measuring tensile breaking strength to select a non-defective product; multistrand cables
11/10/1998US5835227 Method and apparatus for determining performance characteristics in lithographic tools
11/10/1998US5835217 Phase-shifting point diffraction interferometer
11/10/1998US5835208 Apparatus to measure wedge and centering error in optical elements
11/10/1998US5835207 Optical member inspecting apparatus
11/10/1998US5835190 Ophthalmologic curvature measuring device and method to conjointly measure a central and peripheral portion of a curved surface
11/10/1998US5834773 Method and apparatus for testing the function of microstructure elements
11/10/1998CA1340124C Power control for laser
11/04/1998EP0875747A2 Optical transmission characteristic measuring apparatus and calibration method using the same
11/03/1998US5831753 Optical fiber transmission system
11/01/1998CA2236347A1 Method for determining a condition of aging for optical fiber grating
10/1998
10/28/1998CN1197560A System, method and device for monitoring a fiber optic cable
10/28/1998CN1040470C Appts. for carrying ophthalmic lenses
10/27/1998US5828502 Optical bench system
10/27/1998US5828500 For detecting a defect of an optical element
10/27/1998US5828453 Lens designing method and objective lens apparatus with two lenses
10/27/1998US5828448 Method and apparatus for distinguishing between defects in an optical fiber coating
10/27/1998US5828446 Method of inspecting ophthalmic lenses
10/27/1998US5828302 Door sensor with self-diagnosing function
10/27/1998US5828058 Optical fiber remote sensing system with electromagnetic wave measurement
10/22/1998DE19806629A1 Optical fibre system for monitoring radius of curvature and breaks in optical fibres
10/22/1998DE19716228A1 Checking surface of an optical component
10/22/1998DE19715466A1 Measuring process for testing passive optical mains systems
10/21/1998EP0872721A1 Remote measurement of wavelength dependent information about optical components
10/21/1998CN1196793A Method for measuring high resolution ration of very low PMD in single optical fibre and calibration method for PMD measuring instrument
10/20/1998US5825516 Optical power meter for detecting loss factors in fiber optic communications
10/20/1998US5825476 Apparatus for mapping optical elements
10/15/1998WO1998045800A1 Method and apparatus for detecting mura defects
10/15/1998WO1998045676A1 Method and device for checking the tensile resistance of spliced fibers in fiber splicing devices
10/14/1998EP0870374A1 Monitoring of an optical line
10/14/1998EP0803049B1 Diagnostic system for fiber grating sensors
10/14/1998EP0592690B1 Method for identifying optical line
10/13/1998US5821426 Optical fiber strain measuring apparatus
10/08/1998WO1998028655A3 Light modulated confocal optical instruments and method
10/07/1998EP0869631A2 Testing method for optical fiber
10/07/1998EP0868793A1 Improvements in fibre-break detection in optical signal transmission networks
10/06/1998US5818573 Opthalmic lens inspection system
10/06/1998US5818572 Two-dimensional modulation transfer function measurement technique
10/01/1998WO1998042497A2 Molding processes
10/01/1998CA2282090A1 Molding processes
09/1998
09/30/1998EP0721577B1 Device for examining optical waveguides
09/29/1998US5815481 Apparatus for transverse image registration of a photoreceptor belt
09/29/1998US5814134 Apparatus and method for degassing deionized water for inspection and packaging
09/24/1998WO1998041841A1 Method and apparatus for evaluating the performance characteristics of endoscopes
09/24/1998WO1998041836A1 Automated method and apparatus for evaluating the performance characteristics of endoscopes
09/24/1998DE19711158A1 Waveguide grid measuring method
09/24/1998DE19710825A1 Parallel beams generating apparatus for adjusting telescope optical system
09/23/1998EP0866331A2 Apparatus and methods for assessing optical material resistance to deterioration
09/22/1998US5812260 In a transparent material
09/22/1998US5812255 Process and device for determining the refractive index of different mediums
09/22/1998US5812254 Illumination system for ophthalmic lens inspection
09/22/1998US5812253 Measuring apparatus for optical fiber amplifier and adjustment method for the same
09/17/1998DE19809505A1 Test unit for determining optical faults or contamination on optical element, e.g. lens
09/16/1998EP0864081A1 Device for interrogating an optical fibre network