| Patents for G01M 11 - Testing of optical apparatus; Testing structures by optical methods not otherwise provided for (14,356) |
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| 12/12/1991 | WO1991019179A1 Method and device for testing multi-core optical fiber cable fitted with optical connector |
| 12/12/1991 | DE4018379A1 Continuously determining actual path length in optical fibre - deriving measurement signal as function of phase difference between modulation and photodiode signals |
| 12/11/1991 | CN2090539U Optical adapter for testing properties of fibre-optic bundle |
| 12/10/1991 | US5072111 Optical time domain reflectometer calibration system |
| 12/10/1991 | US5072110 Fiber optic strain and impact sensor system for composite materials |
| 12/04/1991 | EP0459762A1 Optical fibre measurement |
| 12/04/1991 | EP0459280A2 Lens alignment and positioning method and apparatus |
| 12/04/1991 | EP0459128A1 Testing apparatus for motor vehicle headlamps |
| 12/04/1991 | EP0282515B1 Device for measuring refractive properties of spectacle lenses |
| 12/03/1991 | US5070239 Night vision goggle ambient illumination testing |
| 12/03/1991 | US5069544 Adaptive pulse width optical fault finder |
| 12/03/1991 | US5069519 Optical fibre handling apparatus and method of using same |
| 11/27/1991 | EP0458586A2 Method of regulating optical axes of headlights for automotive vehicle |
| 11/26/1991 | US5067810 Shared laser tandem optical time domain reflectometer |
| 11/26/1991 | US5067786 Optical fibre monitoring |
| 11/19/1991 | US5067067 Method for evaluating and designing lenses |
| 11/19/1991 | US5066120 Optical device for phase detection testing optical system, especially ophthalmic lenses |
| 11/19/1991 | US5066119 Optical device for phase detection testing optical systems, especially ophthalmic lenses |
| 11/19/1991 | US5066118 Optical fault finder using matched and clipping filters |
| 11/14/1991 | WO1991017425A1 Apparatus for analysing optical properties of transparent objects |
| 11/05/1991 | US5062705 Apparatus for evaluating a lens |
| 11/05/1991 | US5062704 Optical time domain reflectometer having pre and post front panel connector testing capabilities |
| 11/05/1991 | US5062703 Method and apparatus for measuring the length of, or distances to discontinuities in, an optical transmission medium |
| 10/31/1991 | DE4013884A1 Fibre optic component reverse flow damping measurement appts. - has optical power divider splitting measurement light from reflectometer to measurement and reference branches |
| 10/30/1991 | EP0453977A2 Method and process for optical inspection of test objects |
| 10/30/1991 | EP0453880A2 Method for optically inspecting of test objects |
| 10/30/1991 | EP0453817A2 Test and measurement instrument with digital storage |
| 10/30/1991 | EP0453816A2 An improved optical time domain reflectometer having pre and post front panel connector testing capabilities |
| 10/30/1991 | EP0453815A2 Methods of compensation of optical relaxation transients |
| 10/23/1991 | EP0453176A2 Adaptive pulse width optical fault finder |
| 10/23/1991 | EP0453175A2 Optical fault finder |
| 10/23/1991 | CN1055600A Shearing interferometer for detecting collimation of optical beams |
| 10/22/1991 | US5059023 Angular deviation measurement system |
| 10/22/1991 | US5059022 Device for measuring radius of curvature and a method thereof |
| 10/17/1991 | DE4011992A1 Einrichtung zum messen von refraktionseigenschaften optischer systeme mit aussergewoehnlichen eigenschaften Means for measuring refractive properties of optical systems with inclimate properties |
| 10/15/1991 | US5056916 Optical axis adjusting system for lighting unit of vehicle |
| 10/15/1991 | US5056915 Fiber optic calibration standard apparatus |
| 10/13/1991 | CA2037965A1 Optical fault finder |
| 10/13/1991 | CA2037659A1 Adaptive pulse width optical fault finder |
| 10/10/1991 | WO1991015744A1 Optical fibre loss detection |
| 10/02/1991 | EP0449491A1 Testing of optical fiber by introducing multiple simulated peel location bends |
| 10/02/1991 | EP0449475A2 Telemetry for optical fiber amplifier repeater |
| 10/02/1991 | EP0449136A2 Optical time domain testing instrument |
| 09/29/1991 | CA2037216A1 Testing of optical fiber by introducing multiple simulated peel location bends |
| 09/26/1991 | DE4009160A1 Optical measurement arrangement for light conductor - uses measurement device having internal and external light conductors of distinctly different field magnitudes |
| 09/25/1991 | EP0447439A1 Loss detection. |
| 09/24/1991 | US5051762 Production of images using an array of light emitting diodes |
| 09/24/1991 | CA1289395C High energy laser beam replica producing method and system |
| 09/19/1991 | WO1991013837A1 Optical fibre handling |
| 09/19/1991 | DE4102378A1 Interferometric tester for section of converging waves surface - has optics forming parallel duplication of image of diaphragm shutter providing selectable azimuth |
| 09/11/1991 | EP0445716A1 Method for locating impact points on composites |
| 09/11/1991 | EP0445232A1 Fiber optic link noise measurement and optimization system. |
| 09/10/1991 | US5047626 Optical fiber sensor for measuring physical properties of liquids |
| 09/10/1991 | US5046832 Multimode acousto-optic switch and dead zone correction method |
| 09/10/1991 | US5046807 Fibre optic transmission system |
| 09/05/1991 | WO1991013332A1 An expanded foucault knife-edge test for quantitatively testing an optical imaging device |
| 09/03/1991 | US5045689 Method of analyzing guided optics components, optical fibers or optical guide networks by time reflectometry and reflectometer in the time sphere |
| 09/03/1991 | US5045678 Method of and arrangement for determining the position of the optical axis of an optical waveguide |
| 09/03/1991 | US5044754 Apparatus and method for use in determining the optical transmission factor or density of a translucent element |
| 09/03/1991 | US5044205 Method for monitoring deformations with light waveguides |
| 08/28/1991 | EP0443209A2 Method for determination of chromatic dispersion in a single mode optical fiber |
| 08/27/1991 | US5042943 Cleaved optical fibre |
| 08/22/1991 | WO1991012546A1 Splicing process and device |
| 08/22/1991 | WO1991012510A1 Process and arrangement for testing optical components or systems |
| 08/22/1991 | WO1991012502A1 Wave front sensor |
| 08/22/1991 | DE4005360A1 Measurement bank for optical fibre limiting wavelengths - has inner and outer guide elements above table plane contg. fibres for testing fibres direct from production line |
| 08/20/1991 | US5041997 Lightwave component analyzer |
| 08/20/1991 | US5040866 Device for coupling light into an optical waveguide |
| 08/16/1991 | WO1991012509A1 Optical test apparatus |
| 08/14/1991 | DE4003698A1 Wellenfrontsensor Wavefront sensor |
| 08/13/1991 | US5039218 Testing of optical fiber by introducing multiple simulated peel location bends |
| 08/13/1991 | US5038618 Measurement of distortion |
| 08/08/1991 | WO1991011697A1 Device for measuring refractive properties of optical systems |
| 08/08/1991 | DE4003144A1 Arrangement for measuring refraction properties for spectacle lenses - has field aperture with holes forming measurement figure and fixed detector arrangement |
| 08/06/1991 | US5037197 Method of determining optical losses at the ends and end joints of fiber light guides |
| 07/30/1991 | US5035333 Arrangement for constructing a micro-optic bench |
| 07/30/1991 | CA1287113C Laser temperature modulation and detection method |
| 07/25/1991 | WO1991010925A1 Novel optical element for employment in the foucault knife-edge method |
| 07/25/1991 | DE4001449A1 Arrangement for monitoring reflectance of e.g. vehicle lights - has light source, photoelement built in place of standard light filament in incandescent lamp |
| 07/24/1991 | EP0437647A1 Process to measure extremely small optical losses |
| 07/24/1991 | EP0288562B1 Method and apparatus for measuring magnification power of a magnifying aid |
| 07/23/1991 | US5033855 Fizeau interference measuring method and apparatus therefor |
| 07/23/1991 | US5033846 Lightwave component analyzer for determination of chromatic dispersion in single mode optical fiber |
| 07/23/1991 | US5033826 High temporal resolution optical instrument |
| 07/17/1991 | EP0264449B1 Apparatus for measuring temporal parameters of light signalling devices |
| 07/16/1991 | US5032025 Wavelength normalization of fiber-optic loss measurements |
| 07/16/1991 | CA1286403C Method of measuring the refractive index profile of optical fibers |
| 07/11/1991 | WO1991010121A1 Optical time domain relfectometer |
| 07/10/1991 | EP0436354A1 Handtool for optical fibre signal determination by bending |
| 07/10/1991 | EP0436343A2 Apparatus for providing depolarized light |
| 07/09/1991 | US5030005 Liquid crystal device for calibration and testing of optical instruments |
| 07/09/1991 | US5030003 Apparatus for measuring optical characteristic of spectacles |
| 07/09/1991 | US5029977 Mounting system |
| 07/09/1991 | US5029959 Multiple ring guide for payout testing of optical fibers |
| 07/04/1991 | DE3942226A1 Transparent composite fibre material optical refraction test system - has test body illuminated arrangement, deflection light detectors at fixed points and body movement arrangement |
| 07/02/1991 | US5028775 Optical time domain reflectometer using optical element with three control modes of oscillation, attenuation and amplification |
| 07/02/1991 | US5028774 Method and apparatus for detecting and measuring the refractive index of an optical disc substrate |
| 07/02/1991 | US5028131 Lightwave test set for an RF network analyzer system |
| 07/02/1991 | US5028118 Device for the control and adjustment of the modal alignment of optical fibers |
| 06/27/1991 | WO1991009299A1 Apparatus and method for use in determining the optical transmission factor or density of a translucent element |