ClassID:

166289

G01J9/0215 - CPC Classification

Classification description:

Measuring optical phase difference ; Determining degree of coherence; Measuring optical wavelength by interferometric methods by shearing interferometric methods

Sub-classes:
Recent Application in this class:
#1
20260071918
2026-03-12

METHODS AND SYSTEM FOR DETERMINING ABERRATIONS OF A PROJECTION SYSTEM

#2
20250137850
2025-05-01

Prism-Free Differential Interference Contrast Microscope with Tunable Beam Shear Distance

#3
20230296444
2023-09-21

RECONSTRUCTION OF A WAVEFRONT OF A LIGHT BEAM CONTAINING OPTICAL VORTICES

#4
20220074793
2022-03-10

Method for high-accuracy wavefront measurement base on grating shearing interferometry

#5
20210310872
2021-10-07

Wavefront sensor and method of reconstructing distorted wavefronts

#6
20210278283
2021-09-09

Method for measuring complex degree of coherence of random optical field by using mutual intensity-intensity correlation

#7
20210271178
2021-09-02

Sensor apparatus and method for lithographic measurements

#8
20210208005
2021-07-08

Light intensity fluctuation-insensitive projection objective wave aberration detection device and detection method thereof

#9
20210116367
2021-04-22

Measurement technique for refractive index inhomogeneity between plates of a lightguide optical element (LOE)

#10
20210026250
2021-01-28

Device and method for detecting projection objective wave-front aberration

#11
20200355558
2020-11-12

Wavefront detector

#12
20200326239
2020-10-15

Method for testing a tire by interferometry

#13
20200292296
2020-09-17

Method for wavefront measurement of optical imaging system based on grating shearing interferometry

#14
20200182701
2020-06-11

APPARATUS FOR MEASURE OF COHERENCE OF LIGHT SOURCE FOR HOLOGRAPHIC DISPLAY AND METHOD THEREOF

#15
20190391020
2019-12-26

Method for evaluating the quality of the measurement of a wavefront and systems implementing such a method

#16
20190346311
2019-11-14

Wavefront detector

#17
20190285481
2019-09-19

Method and device for analysing an electromagnetic wave in high definition

#18
20190265107
2019-08-29

Wavefront sensor and method of reconstructing distorted wavefronts

#19
20190219451
2019-07-18

Method and device for measuring wavefront using diffraction grating, and exposure method and device

#20
20190212226
2019-07-11

Measuring method and measuring system for interferometrically measuring the imaging quality

#21
20190154514
2019-05-23

Shearing interferometer using two opposing shearing plates for laser

#22
20180292268
2018-10-11

Method and apparatus for wavefront sensing

#23
20180143079
2018-05-24

Holographic wavefront sensing

#24
20180106674
2018-04-19

Gas visualizing methods and systems with birefringent polarization interferometer

#25
20170276552
2017-09-28

Wavefront sensor and method for determining differences in piston and tilt existing between several light beams

#26
20170234736
2017-08-17

Device and method for characterization of a light beam to determine space time couplings in the light beam using a two-dimensional interference pattern formed by the light beam and a fourier transform

#27
20170219458
2017-08-03

Collimation evaluation device and collimation evaluation method

#28
20170205292
2017-07-20

Device and method for characterization of a light beam to determine the spatial-temporal properties of the light beam using a two dimensional interference pattern

#29
20170199083
2017-07-13

Collimation evaluation device and collimation evaluation method

#30
20170184455
2017-06-29

Measuring device having ideal wavefront generator for detecting point diffraction interferometric wavefront aberration of measured optical system and method for detecting wavefront aberration thereof

#31
20170038261
2017-02-09

Method and apparatus for wavefront sensing

#32
20160320170
2016-11-03

Method and apparatus for performing optical imaging using frequency-domain interferometry

#33
20150253197
2015-09-10

Method for measuring optical phase, device for measuring optical phase, and optical communication device

#34
20150219501
2015-08-06

Broadband, common-path, interferometric wavefront sensor

#35
20150160073
2015-06-11

Method and device for measuring wavefront using light-exit section causing light amount distribution in at least one direction

#36
20150146213
2015-05-28

Correction of rotational inaccuracy in lateral shearing interferometry

#37
20150077755
2015-03-19

Method and apparatus for performing optical imaging using frequency-domain interferometry

#38
20140241632
2014-08-28

Imaging apparatus and image processing method

#39
20130314716
2013-11-28

Speckle reduction in optical coherence tomography by path length encoded angular compounding

#40
20130034209
2013-02-07

X-ray imaging apparatus

#41
20120281237
2012-11-08

Speckle reduction in optical coherence tomography by path length encoded angular compounding

#42
20120242996
2012-09-27

Optical scattering disk, use thereof, and wavefront measuring apparatus

#43
20120120410
2012-05-17

All-reflective, radially shearing interferometer

#44
20120002686
2012-01-05

Process and apparatus for a wavelength tuning source

#45
20110299091
2011-12-08

Method and apparatus for performing optical imaging using frequency-domain interferometry

#46
20100309477
2010-12-09

Method and apparatus for performing optical imaging using frequency-domain interferometry

#47
20100309457
2010-12-09

Wavefront imaging sensor

#48
20100254414
2010-10-07

Process and apparatus for a wavelength tuning source

#49
20100177323
2010-07-15

Wavefront-aberration-measuring device and exposure apparatus

#50
20100157309
2010-06-24

Speckle reduction in optical coherence tomography by path length encoded angular compounding

#51
20100141959
2010-06-10

Two grating lateral shearing wavefront sensor

#52
20090262364
2009-10-22

Method, phase grating and device for analyzing a wave surface of a light beam

#53
20090257461
2009-10-15

Process and apparatus for a wavelength tuning source

#54
20090161115
2009-06-25

Wavefront sensor with optical path difference compensation

#55
20090051927
2009-02-26

Optical scattering disk, use thereof, and wavefront measuring apparatus

#56
20090027689
2009-01-29

Method and apparatus for performing optical imaging using frequency-domain interferometry

#57
20090021748
2009-01-22

Method and system for wavefront measurements of an optical system

#58
20080231862
2008-09-25

Device and method for the interferometric measurement of phase masks

#59
20080231840
2008-09-25

Methods and apparatus for measuring wavefronts and for determining scattered light, and related devices and manufacturing methods

#60
20080181263
2008-07-31

Process and apparatus for a wavelength tuning source

#61
20080174786
2008-07-24

Phase shift amount measurement apparatus and transmittance measurement apparatus

#62
20080037030
2008-02-14

Image amplifying, servo-loop controlled, point diffraction interometer

#63
20070182969
2007-08-09

Method for approximating an influence of an optical system on the state of polarization of optical radiation

#64
20070171422
2007-07-26

Two-dimensional spectral shearing interferometry for ultrafast pulse characterization

#65
20070153295
2007-07-05

Methods for measuring a wavefront of an optical system

#66
20070001105
2007-01-04

Wavefront coding interference contrast imaging systems

#67
20060256349
2006-11-16

Speckle reduction method and system for EUV interferometry

#68
20060244973
2006-11-02

Method and apparatus for performing optical imaging using frequency-domain interferometry

#69
20060238769
2006-10-26

Tilt compensated interferometers

#70
20060227333
2006-10-12

Speckle reduction in optical coherence tomography by path length encoded angular compounding

#71
20060055940
2006-03-16

Phase measuring method and apparatus for measuring characterization of optical thin films

#72
20060039005
2006-02-23

Differential interferometers creating desired beam patterns

#73
20060001890
2006-01-05

Spatial light modulator as source module for DUV wavefront sensor

#74
20050259269
2005-11-24

Shearing interferometer with dynamic pupil fill

#75
20050225859
2005-10-13

System and method for calibrating a spatial light modulator array using shearing interferometry

#76
20050146700
2005-07-07

Grating for EUV lithographic system aberration measurement

#77
20050117168
2005-06-02

Measuring method and apparatus using shearing interferometry, exposure method and apparatus using the same, and device manufacturing method

#78
20050035295
2005-02-17

Process and apparatus for a wavelength tuning source

#79
16414871
2022-03-29

Regularized shearograms for phase resolved shearography

#80
16125349
2019-11-05

Motion compensation system for a shearography apparatus

#81
15863214
2019-02-26

Two-axis interferometric tracking utilizing pairs of shearing interferometers

#82
15191933
2017-01-31

Interferometer for Fourier transform infrared spectrometry