FR2230969B1 - - Google Patents
Info
- Publication number
- FR2230969B1 FR2230969B1 FR7318751A FR7318751A FR2230969B1 FR 2230969 B1 FR2230969 B1 FR 2230969B1 FR 7318751 A FR7318751 A FR 7318751A FR 7318751 A FR7318751 A FR 7318751A FR 2230969 B1 FR2230969 B1 FR 2230969B1
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/48—Laser speckle optics
-
- 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
- G01B9/02062—Active error reduction, i.e. varying with time
- G01B9/02067—Active error reduction, i.e. varying with time by electronic control systems, i.e. using feedback acting on optics or light
-
- 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
- G01B2290/40—Non-mechanical variable delay line
-
- 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
- G01B2290/45—Multiple detectors for detecting interferometer signals
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Length Measuring Devices By Optical Means (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7318751A FR2230969B1 (ja) | 1973-05-23 | 1973-05-23 | |
GB1760574A GB1463537A (en) | 1973-05-23 | 1974-04-22 | Method and apparatus for investigation of small displacements of a solid body by means of coherent light |
DE19742420732 DE2420732C3 (de) | 1973-05-23 | 1974-04-29 | Anordnung zur Untersuchung der Bewegung eines festen Körpers mit einer kohärenten Lichtquelle |
US05/606,324 US4013366A (en) | 1973-05-23 | 1975-08-20 | Method and apparatus for investigation of small displacements of a solid body by means of coherent light |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7318751A FR2230969B1 (ja) | 1973-05-23 | 1973-05-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2230969A1 FR2230969A1 (ja) | 1974-12-20 |
FR2230969B1 true FR2230969B1 (ja) | 1976-04-23 |
Family
ID=9119850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7318751A Expired FR2230969B1 (ja) | 1973-05-23 | 1973-05-23 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2420732C3 (ja) |
FR (1) | FR2230969B1 (ja) |
GB (1) | GB1463537A (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3029776C2 (de) * | 1980-08-06 | 1983-04-07 | Krautkrämer, GmbH, 5000 Köln | Verfahren zum berührungslosen Empfang von Ultraschallwellen |
GB8522820D0 (en) * | 1985-09-16 | 1985-10-23 | Montgomery P C | Interferometric measurement |
DE4427692A1 (de) * | 1994-08-04 | 1996-02-08 | Bayerische Motoren Werke Ag | Verfahren zum Bestimmen des Schwingungsverhaltens eines Körpers |
-
1973
- 1973-05-23 FR FR7318751A patent/FR2230969B1/fr not_active Expired
-
1974
- 1974-04-22 GB GB1760574A patent/GB1463537A/en not_active Expired
- 1974-04-29 DE DE19742420732 patent/DE2420732C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2230969A1 (ja) | 1974-12-20 |
GB1463537A (en) | 1977-02-02 |
DE2420732C3 (de) | 1979-07-12 |
DE2420732A1 (de) | 1974-12-19 |
DE2420732B2 (de) | 1978-11-02 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
CL | Concession to grant licenses | ||
CL | Concession to grant licenses |