CH615750A5 - - Google Patents
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- Publication number
- CH615750A5 CH615750A5 CH267177A CH267177A CH615750A5 CH 615750 A5 CH615750 A5 CH 615750A5 CH 267177 A CH267177 A CH 267177A CH 267177 A CH267177 A CH 267177A CH 615750 A5 CH615750 A5 CH 615750A5
- Authority
- CH
- Switzerland
- Prior art keywords
- signal
- output
- reflected
- mirror
- beam splitter
- Prior art date
Links
- 230000001427 coherent effect Effects 0.000 claims abstract description 11
- 230000003287 optical effect Effects 0.000 claims description 23
- 230000010287 polarization Effects 0.000 claims description 19
- 238000012937 correction Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 14
- 230000002123 temporal effect Effects 0.000 claims description 13
- 230000002452 interceptive effect Effects 0.000 claims description 8
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000002604 ultrasonography Methods 0.000 description 14
- 230000035945 sensitivity Effects 0.000 description 12
- 238000013508 migration Methods 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000001902 propagating effect Effects 0.000 description 3
- 238000002592 echocardiography Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02055—Reduction or prevention of errors; Testing; Calibration
- G01B9/02075—Reduction or prevention of errors; Testing; Calibration of particular errors
- G01B9/02078—Caused by ambiguity
- G01B9/02079—Quadrature detection, i.e. detecting relatively phase-shifted signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/002—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means for representing acoustic field distribution
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
- G01B2290/70—Using polarization in the interferometer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Instruments For Measurement Of Length By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8665/76A GB1537925A (en) | 1976-03-04 | 1976-03-04 | Interferometer to measure small displacements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH615750A5 true CH615750A5 (cs) | 1980-02-15 |
Family
ID=9856867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH267177A CH615750A5 (cs) | 1976-03-04 | 1977-03-03 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4019818A (cs) |
| JP (1) | JPS52108191A (cs) |
| CA (1) | CA1070150A (cs) |
| CH (1) | CH615750A5 (cs) |
| DE (1) | DE2709571A1 (cs) |
| FR (1) | FR2343233A1 (cs) |
| GB (1) | GB1537925A (cs) |
| NL (1) | NL7702289A (cs) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4165182A (en) * | 1977-12-09 | 1979-08-21 | The United States Of America As Represented By The Department Of Health, Education And Welfare | System for obtaining displacement-amplitude information from a quadrature-dual interferometer |
| US4474467A (en) * | 1981-12-28 | 1984-10-02 | Itek Corporation | Wavefront sensor using a surface acoustic wave diffraction grating |
| US4512661A (en) * | 1982-09-02 | 1985-04-23 | The United States Of America As Represented By The Aministration Of The National Aeronautics And Space Administration | Dual differential interferometer |
| US4886363A (en) * | 1988-09-06 | 1989-12-12 | Eastman Kodak Company | Quadratic frequency modulated absolute distance measuring interferometry |
| US5999261A (en) * | 1998-02-10 | 1999-12-07 | Seagate Technology, Inc. | Split phase high performance, high frequency, high dynamic range interferometer |
| US6741357B2 (en) * | 2001-08-14 | 2004-05-25 | Seagate Technology Llc | Quadrature phase shift interferometer with unwrapping of phase |
| US7092100B2 (en) * | 2004-02-23 | 2006-08-15 | Seagate Technology Llc | Quadrature phase shift interferometer (QPSI) decoder and method of decoding |
| EP2267404B1 (en) * | 2005-08-09 | 2016-10-05 | The General Hospital Corporation | Apparatus and method for performing polarization-based quadrature demodulation in optical coherence tomography |
| US7810395B2 (en) * | 2005-12-22 | 2010-10-12 | Total Wire Corporation | Ultrasonic pressure sensor and method of operating the same |
| IL179204A0 (en) * | 2006-11-13 | 2008-01-20 | Abraham Aharoni | Multi-phase interferometer |
| US8166825B2 (en) * | 2007-10-30 | 2012-05-01 | Tea Time Partners, L.P. | Method and apparatus for noise reduction in ultrasound detection |
| US20110144502A1 (en) * | 2009-12-15 | 2011-06-16 | Tea Time Partners, L.P. | Imaging guidewire |
| US10114157B2 (en) * | 2012-09-20 | 2018-10-30 | Applied Materials, Inc. | Pulse width controller |
| GB201515505D0 (en) * | 2015-09-01 | 2015-10-14 | Optasense Holdings Ltd | Distributed fibre optic sensing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2604004A (en) * | 1947-08-13 | 1952-07-22 | Root Elihu | Measuring device employing light interference fringes |
| DE1085350B (de) * | 1957-07-02 | 1960-07-14 | Leitz Ernst Gmbh | Interferometer |
| US3716826A (en) * | 1970-02-02 | 1973-02-13 | American Express Invest | Acoustic to optical image converter |
-
1976
- 1976-03-04 GB GB8665/76A patent/GB1537925A/en not_active Expired
- 1976-04-08 US US05/675,222 patent/US4019818A/en not_active Expired - Lifetime
-
1977
- 1977-02-28 CA CA272,823A patent/CA1070150A/en not_active Expired
- 1977-03-02 JP JP2330077A patent/JPS52108191A/ja active Pending
- 1977-03-03 CH CH267177A patent/CH615750A5/de not_active IP Right Cessation
- 1977-03-03 NL NL7702289A patent/NL7702289A/xx not_active Application Discontinuation
- 1977-03-04 FR FR7706488A patent/FR2343233A1/fr not_active Withdrawn
- 1977-03-04 DE DE19772709571 patent/DE2709571A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CA1070150A (en) | 1980-01-22 |
| GB1537925A (en) | 1979-01-10 |
| FR2343233A1 (fr) | 1977-09-30 |
| JPS52108191A (en) | 1977-09-10 |
| US4019818A (en) | 1977-04-26 |
| NL7702289A (nl) | 1977-09-06 |
| DE2709571A1 (de) | 1977-09-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |