Patents
Patents for G01B 9 - Instruments as specified in the subgroups and characterised by the use of optical measuring means (14,810)
12/1995
12/05/1995US5473433 Method of high yield manufacture of VLSI type integrated circuit devices by determining critical surface characteristics of mounting films
12/05/1995US5473432 Apparatus for measuring the thickness of a moving film utilizing an adjustable numerical aperture lens
12/05/1995US5473431 Interferometric flying height measuring device including an addition of a spacer layer
12/05/1995US5473429 Method and apparatus for controlling the reciprocating translation of an interferometer reflector or other body
11/1995
11/30/1995DE4418213A1 Apparatus for measuring changes in optical pathlength and its direction
11/28/1995US5471305 Alignment verification system for use with interferometer and having a line sensor
11/28/1995US5471302 Interferometric probe for distance measurement utilizing a diffraction reflecting element as a reference surface
11/28/1995US5471300 Apparatus and method for providing a feedback measurement in a laser system
11/23/1995WO1995031694A1 Improved phase shifting interferometer and method for surface topography measurement
11/22/1995EP0682771A1 Method and apparatus for surface topography measurement by spatial-frequency analysis of interferograms
11/21/1995US5469261 Measurement of lens characteristics
11/21/1995US5469260 Stage-position measuring apparatus
11/21/1995US5469259 Inspection interferometer with scanning autofocus, and phase angle control features
11/16/1995DE4416786A1 Calibration of interferometer for testing surface profile of cylindrical sample
11/14/1995US5467184 Method of large deformation measurement using speckle interferometry
11/14/1995US5465611 Sensor head for use in atomic force microscopy and method for its production
11/08/1995EP0681166A1 Improvements in or relating to optical interferometers
11/07/1995US5465148 Apparatus and method for detecting the relative positional deviation between two diffraction gratings
11/07/1995US5465147 Method and apparatus for acquiring images using a ccd detector array and no transverse scanner
11/02/1995DE4400680C2 Vorrichtung zur Bestimmung von Abstandsänderungen eines Objekts An apparatus for determining changes in the distance of an object
10/1995
10/24/1995US5460627 Method of evaluating a laser used in ophthalmological surgery
10/19/1995WO1995027918A2 Method of determining measurement-point position data and device for measuring the magnification of an optical beam path
10/19/1995WO1995027917A1 Method of determining the position of a feature on an object relative to a surgical microscope and a device for carrying out the method
10/17/1995US5459578 Method and apparatus for measuring two dimensional plane displacement by moire fringes of concentric circle gratings
10/17/1995US5459572 Mirror arrangement in a focusing interferometer
10/17/1995US5459571 Multiple control frequency phase modulator in phase modulated interferometer precision distance measuring system
10/17/1995US5459570 Method and apparatus for performing optical measurements
10/17/1995US5459564 Apparatus and method for inspecting end faces of optical fibers and optical fiber connectors
10/11/1995EP0676629A2 Refractive index measurement of spectacle lenses
10/11/1995EP0676616A1 Retardation line for an interferometer
10/10/1995US5457571 Metallographic microscope useful for the characterization of conductors drawing dies
10/10/1995US5457570 Ultraviolet resistive antireflective coating of Ta2 O5 doped with Al2 O3 and method of fabrication
10/10/1995US5457534 Method and apparatus to calibrate intensity and determine fringe order for interferometric measurement of small spacings
10/10/1995US5457533 Point-diffraction interferometer utilizing separate reference and signal beam paths
10/10/1995US5457531 Movable mirror mounting mechanism in a scanning interferometer
10/10/1995US5457529 Rotating mirror interferometer
10/05/1995DE19509598A1 Light wavelength measurement appts.
09/1995
09/28/1995WO1995025979A1 Operating microscope
09/27/1995EP0673500A1 Interferometric measurement device.
09/26/1995US5453835 Multichannel acousto-optic correlator for time delay computation
09/26/1995US5453833 Wavelength stabilizing light source apparatus by maintaining a constant phase difference
09/19/1995US5452088 Multimode-laser interferometric apparatus for eliminating background interference fringes from thin-plate measurements
09/19/1995US5451772 For sensing physical parameters at several locations
09/14/1995WO1995024619A1 Interferometre and fourier transform spectrometer
09/13/1995EP0671601A2 System and method for optical interferometric measurement
09/12/1995US5450195 Phase-modulated interferometer for evaluating phase displacement resulting from charges in path length
09/12/1995US5449901 Fine surface observing apparatus
09/06/1995EP0670467A1 Interferometer
09/05/1995US5448662 Apparatus for coupling an optical fiber to a structure at a desired angle
09/05/1995US5448352 Method and apparatus for the nondestructive testing of vessels made of composite material wound on a metallic liner by means of holographic interferometry
09/05/1995US5448058 Optical signal detection apparatus and method for preventing polarization signal fading in optical fiber interferometric sensor systems
08/1995
08/31/1995WO1995023324A1 Motion-transfer mechanism, beam-splitter assembly, and interferometer
08/30/1995EP0669525A2 Interferometrical system for detecting and localising reflective defects of light guide structures
08/30/1995EP0610374B1 Process for measuring the inclination of boundary areas in an optical system
08/30/1995CN1107577A Image dissection method and apparatus by photon tunnel scan
08/29/1995US5446808 Photomechanical positioning and stabilization method and devices using optical fibers and feedback
08/29/1995US5446545 Method of and apparatus for calibrating machines including a measuring probe and a measuring apparatus
08/23/1995EP0668490A2 Electrically tunable fabry-perot interferometer produced by surface micromechanical techniques for use in optical material analysis
08/23/1995EP0668483A2 Laser interferometer
08/22/1995US5444532 Interferometer apparatus for detecting relative movement between reflecting members
08/22/1995US5443684 Forming heterostructure device on wafer, etching a crater in wafer with ion beam at low angle, removing material from crater with etchant, measureing with magnifying optical microscope
08/10/1995WO1995020920A1 A microkeratome and method and apparatus for calibrating a microkeratome
08/10/1995DE4403929A1 Optical interferometer with non-reflecting multiport coupler
08/09/1995CN2205029Y Portable barcode quality tester
08/01/1995US5438412 Phase conjugate interferometer for testing paraboloidal mirror surfaces
07/1995
07/25/1995US5436724 Apparatus for measuring relative movement using a diffraction grating having an orthogonally polarized input beam
07/20/1995WO1995019541A1 An interferometric measuring system
07/13/1995WO1995018951A1 Inspection interferometer with scanning feature
07/13/1995DE4400680A1 Measurement of positional change using self-mixing interference laser
07/11/1995US5432606 Interferometer for the measurement of surface profile which introduces a spatial carrier by tilting the reference mirror
07/11/1995US5432595 Method for measuring residual stresses in materials by plastically deforming the material and interference pattern comparison
07/06/1995WO1995018352A1 Scanning force microscopy process and scanning force microscope with detector probe
07/05/1995EP0660918A1 Interferometric measurement process and laser interferometer therefor.
06/1995
06/29/1995WO1995017646A1 Method and apparatus to calibrate intensity and determine fringe order for interferometric measurement of small spacings
06/28/1995EP0659383A2 Method and apparatus for optical coherence tomographic fundus imaging
06/27/1995US5428444 Real time interferometric comparator
06/21/1995EP0658813A1 Radiation-source unit for generating a beam having two directions of polarisation and two frequencies
06/20/1995US5426504 Optical depth gauge for optically rough surfaces
06/14/1995EP0657713A2 Combined interferometer and refractometer
06/14/1995CN2200814Y Detecting instrument for shell bottom and shell bottom groove trace
06/13/1995US5424828 Method for measuring and analyzing interference fringes using a halographic optical element having two patterns for diffracting a laser beam
06/13/1995US5423128 Cigarette filter rod minimum point gauge
06/08/1995DE4103914C2 Interferometer Interferometer
06/08/1995DE4006407C2 Interferometrische Längen- oder Winkelmeßeinrichtung Interferometric length or angle
06/06/1995US5422713 Bi-refringent waveguide rotational alignment method using white light interferomety
06/06/1995US5422703 Reflected light measuring method and reflected light measuring apparatus for a microscopic photometric system
05/1995
05/30/1995US5420717 Adjustable-contrast microscope
05/30/1995US5420688 Interferometric fiber optic displacement sensor
05/26/1995WO1995014210A1 Laser interferometric measurement
05/24/1995EP0654655A1 Optical achromatic interferometer of the trilateral phase shift type
05/24/1995DE4228535C2 Dünnschicht-Interferometer Thin-film interferometer
05/23/1995US5418612 Method of and apparatus for determining surface contour of diffusely reflecting objects
05/17/1995CN1028446C Projective type measuring instrument for measuring clearance of die set and working theory
05/16/1995CA2036567C Michelson interferometer for producing optical path differences
05/09/1995US5414646 Digital optical micrometer
05/09/1995US5414512 Method and apparatus for viewing a shearographic image
05/03/1995CN1102288A Nanometer metrology
05/02/1995US5412474 System for measuring distance between two points using a variable frequency coherent source
05/02/1995CA1335418C Interferometric sensor and its use in an interferometer
04/1995
04/26/1995EP0650070A2 Interferometry with multipath nulling