Patents for G01J 4 - Measuring polarisation of light (3,335)
08/1995
08/08/1995US5440390 Optical fiber polarimeter
08/01/1995CA2025924C Detecting magnetooptic and intensity-modulated optical signals with the same detector
07/1995
07/19/1995EP0663590A1 Modulated spectroscopic ellipsometer
07/05/1995EP0661533A1 Method for the polarmetric evaluation of a polarization modulated light signal
06/1995
06/30/1995CA2138598A1 Method for the polarimetric evaluation of a polarization-modulated light signal
05/1995
05/26/1995WO1995014243A1 Object detection system
05/24/1995EP0654657A2 System and method for measuring polarization dependent loss
05/18/1995DE4337857A1 Evaluating the rotation of the polarisation plane of a measurement transducer
05/17/1995EP0653621A1 A process for fabricating a device using an ellipsometric technique
05/16/1995US5416324 Optical imaging device with integrated polarizer
05/10/1995EP0652415A1 A device for measuring the thickness of thin films
05/02/1995US5412473 Multiple angle spectroscopic analyzer utilizing interferometric and ellipsometric devices
04/1995
04/18/1995US5408322 Self aligning in-situ ellipsometer and method of using for process monitoring
04/18/1995US5408321 Apparatus for measurement of specific dichroism of sheet materials
04/11/1995US5406371 Apparatus for measuring birefringence and retardation
04/11/1995CA2076033C Phase sensitive differential polarimetry technique and apparatus
04/04/1995US5404225 Object detector
03/1995
03/07/1995US5396329 Polarisation image detection systems
01/1995
01/26/1995WO1995002814A1 Multiple angle spectroscopic analyzer
01/04/1995EP0632256A1 Micropolarimeter, microsensor system and method of characterizing thin films
12/1994
12/14/1994EP0628802A2 Apparatus for measurement of specific dichroism of sheet materials
12/13/1994US5373359 Adapted to sense characteristics of a sample
12/06/1994US5371597 System and method for measuring polarization dependent loss
12/01/1994DE4319036A1 Stokes analyser
11/1994
11/10/1994WO1994025823A1 Self aligning in-situ ellipsometer and method of using for process monitoring
11/10/1994CA2159831A1 Self aligning in-situ ellipsometer and method of using for process monitoring
11/02/1994EP0622619A2 Optical signal detection apparatus and method for preventing polarization signal fading in optical fiber interferometric sensor systems
10/1994
10/18/1994US5357342 Process and apparatus for measuring degree of polarization and angle of major axis of polarized beam of light
09/1994
09/07/1994EP0233215B1 Photodetector arrangement for measuring the state of polarization of light
09/06/1994US5345308 Object discriminator
08/1994
08/10/1994EP0563221A4 Method and apparatus for automatic optical inspection
08/09/1994US5337146 Diffraction-grating photopolarimeters and spectrophotopolarimeters
08/02/1994US5335066 Measuring method for ellipsometric parameter and ellipsometer
07/1994
07/26/1994US5333052 Method and apparatus for automatic optical inspection
06/1994
06/09/1994WO1994012665A1 Quantitative detection of macromolecules with fluorescent oligonucleotides
05/1994
05/31/1994US5317150 Polarimeter calibration method and apparatus
05/18/1994EP0597390A1 Birefringence distribution measuring method
05/11/1994WO1994010795A1 Polarization viewer
05/10/1994US5311285 Measuring method for ellipsometric parameter and ellipsometer
05/10/1994US5311283 Fiber optic probe and method for detecting optically active materials
04/1994
04/13/1994EP0592187A1 Polarimeter re-calibration method and apparatus
04/13/1994EP0592075A1 A polarization detector
03/1994
03/29/1994US5298973 Phase difference controller and method for controlling phase difference
03/29/1994US5298972 Method and apparatus for measuring polarization sensitivity of optical devices
03/23/1994EP0587708A1 Determination of induced change of polarization state of light
03/22/1994US5296913 Polarimeter re-calibration method and apparatus
12/1993
12/23/1993DE4219691A1 Measuring device for determining direction of polarisation planes of linearly polarised light - has stepper motor with hollow axle, drive circuit with motor positioning accuracy correction stage, analyser and electro-optical detector
12/02/1993DE4217852A1 Detecting and analysing cell tissue structure in vivo by light polarisation - using laser source, analyser and difference detector in microscope assembly for distinguishing between healthy and pathological tissue for early tumour diagnosis
11/1993
11/23/1993US5264916 Object detection system
10/1993
10/27/1993EP0566657A1 Simultaneous multiple angle/multiple wavelength ellipsometer and method
10/26/1993US5257092 Apparatus for measuring polarization and birefringence
10/14/1993DE3820226A1 Polarisation sensor for determining light source eg laser beam - cyclically modulates polarisation of input beam using rotating half-wave plate or Faraday cell and analyses using beam divider and differential amplifier to distinguish signal from background.
10/06/1993EP0563221A1 Method and apparatus for automatic optical inspection
09/1993
09/21/1993US5247176 Infrared laser polarimeter
09/08/1993EP0558863A1 Infrared ellipsometer
08/1993
08/17/1993US5237388 Polarized light measuring apparatus and phase plate measuring apparatus
08/04/1993EP0553460A2 Method and apparatus for measuring polarization mode dispersion in optical devices
07/1993
07/20/1993US5229834 Sensor for detecting and measuring the angle of rotation of a plane of light polarization
07/20/1993CA2034650C Ellipsometric control of material growth
07/13/1993US5227623 Method and apparatus for measuring polarization mode dispersion in optical devices
06/1993
06/02/1993CN2135145Y Prism polarimeter
04/1993
04/14/1993EP0536985A1 A polarimeter
04/14/1993EP0536538A2 Method for measuring polarization sensitivity of optical devices
04/08/1993DE4133128A1 Determining optical activity esp. of liq. medium - using optical fibres for stokes parameter determination which are optically contacted with the medium
03/1993
03/31/1993EP0533678A1 Ellipsometric control of material growth
03/18/1993WO1993005376A1 Fiber optic probe and method for detecting optically active materials
03/18/1993CA2112106A1 Fiber optic probe and method for detecting optically active materials
12/1992
12/15/1992CA1311367C Optical analysis method and apparatus having programmable rapid random wavelength access
12/10/1992WO1992021949A1 Determination of induced change of polarization state of light
12/01/1992US5168326 Method of detecting angle of optical rotation in solution having time-dependent concentration, detection apparatus therefor, and detector cell therefor
11/1992
11/25/1992EP0514492A1 Light wave polarization determination using a hybrid system
11/24/1992US5166989 Integrated polarization detection system
10/1992
10/20/1992CA1308938C Heterodyne michelson interferometer for polarization measurements
10/15/1992DE4210304A1 Birefringence determn. esp. by on=line process - by measuring intensities of several light beams of different polarisation directions and calculating light propagation retardation in sample from measured data etc.
10/13/1992US5155622 Polarizing optical element and device using the same
10/01/1992DE4209537A1 Verfahren und vorrichtung zur messung von polarisiertem licht Method and apparatus for the measurement of polarized light
08/1992
08/20/1992WO1992009880A3 Method and apparatus for automatic optical inspection
07/1992
07/12/1992WO1992012404A1 Simultaneous multiple angle/multiple wavelength ellipsometer and method
07/12/1992CA2099491A1 Simultaneous multiple angle/multiple wavelength ellipsometer and method
06/1992
06/30/1992US5125743 Instrument for measuring solar magnetic fields
06/23/1992US5124828 Device for heterodyne detection of an optical signal and for reducing noise in the signal using polarization control elements
06/11/1992WO1992009880A2 Method and apparatus for automatic optical inspection
05/1992
05/20/1992EP0486357A1 Light beam deflector comprising a Bragg grating
05/20/1992EP0486265A2 Polarization detection system
05/06/1992EP0483394A1 Method and apparatus to simultaneously measure emissivities and thermodynamic temperature of remote objects
04/1992
04/14/1992US5105415 Detecting magnetooptic and intensity-modulated optical signals with the same detector
04/07/1992US5102222 Light wave polarization determination using a hybrid system
03/1992
03/26/1992DE4029928A1 Complete analysis of electromagnetic radiation - using computer-controlled interferometer, with beam modulation via linear displacement of mirrors
03/25/1992EP0477009A1 Polarization measuring apparatus
02/1992
02/25/1992US5091320 Optical method for controlling thickness of semiconductor
01/1992
01/29/1992EP0468487A2 Method of detecting angle of optical rotation in solution having time-dependent concentration, detection apparatus therefor, and detector cell therefor
01/14/1992US5081348 Optical polarimeter having four channels
12/1991
12/26/1991WO1991020093A1 Ellipsometric control of material growth
12/17/1991US5073025 Independent polarization state measurements sensor
10/1991
10/29/1991US5061072 Differential ellipsometer
09/1991
09/10/1991US5046850 Driving mechanism for driving an oscillating polarizer
08/1991
08/29/1991DE4105192A1 Polarimetric testing of surface properties and transparent material - by evaluating difference between reflected s and p polarised components
08/22/1991WO1991012501A1 Light wave polarization determination using a hybrid system
08/15/1991WO1991012314A1 Phase sensitive differential polarimetry technique and apparatus
07/1991
07/31/1991EP0439127A2 Fast optical polarization meter
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