JPS646705A - Displacement quantity and speed measuring apparatus - Google Patents
Displacement quantity and speed measuring apparatusInfo
- Publication number
- JPS646705A JPS646705A JP62161890A JP16189087A JPS646705A JP S646705 A JPS646705 A JP S646705A JP 62161890 A JP62161890 A JP 62161890A JP 16189087 A JP16189087 A JP 16189087A JP S646705 A JPS646705 A JP S646705A
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- optical fiber
- reflector
- light
- made incident
- Prior art date
- 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.)
- Granted
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
- Instruments For Measurement Of Length By Optical Means (AREA)
Abstract
PURPOSE:To achieve a higher accuracy of the apparatus, by a method wherein a laser light source and an interferometer are connected with an optical fiber to eliminate possible adverse effect on measuring accuracy even if any relative vibration occurs, which makes a necessary space as small as possible while accomplishing optical axis matching simply by adjustment of a measuring probe and a measuring reflection mirror. CONSTITUTION:A coherent light from a laser light source 1 is passed through an optical fiber 8a to be made parallel with a collimator lens 5a and divided into two polarized beam with a beam splitter 7a. Then, one of the beam is condensed with a condenser lens 6a and made incident into a measuring probe 15 through an optical fiber 8b. It is reflected back with a measuring reflector 3 fixed on an object to be measured through a collimator lens 5b, a beam splitter 7b, a wavelength plate 10b and a measuring reflector 3 and, then, made incident into a photointerferometer 14 through the other fiber 8b. The other light is made incident into a light attenuator 11 through a polarizer 9a and a wavelength plate 10a to adjust intensity level of light and, then, into a phase detector 13. Therefore, a displacement value and speed are calculated with the probe 15 and the reflector 3 made in the size of several 10mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62161890A JP2592254B2 (en) | 1987-06-29 | 1987-06-29 | Measuring device for displacement and displacement speed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62161890A JP2592254B2 (en) | 1987-06-29 | 1987-06-29 | Measuring device for displacement and displacement speed |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS646705A true JPS646705A (en) | 1989-01-11 |
JP2592254B2 JP2592254B2 (en) | 1997-03-19 |
Family
ID=15743945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62161890A Expired - Fee Related JP2592254B2 (en) | 1987-06-29 | 1987-06-29 | Measuring device for displacement and displacement speed |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2592254B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100568345B1 (en) * | 2001-11-21 | 2006-04-05 | 주식회사 포스코 | Apparatus for measuring speed of strip using single mode optical fiber |
CN117074719A (en) * | 2023-05-17 | 2023-11-17 | 山东省科学院海洋仪器仪表研究所 | Photon counting coherent ocean flow field velocity measurement system and method with self-adaptive local oscillation light |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102072743B (en) * | 2009-11-24 | 2012-09-05 | 陈法胜 | Method for size detection and post-treatment of sheeted molded polymer material and detection and post-treatment machine for implementing method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4843656A (en) * | 1971-10-04 | 1973-06-23 | ||
JPS6018727A (en) * | 1983-07-12 | 1985-01-30 | Hitachi Cable Ltd | Optical interferometer |
-
1987
- 1987-06-29 JP JP62161890A patent/JP2592254B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4843656A (en) * | 1971-10-04 | 1973-06-23 | ||
JPS6018727A (en) * | 1983-07-12 | 1985-01-30 | Hitachi Cable Ltd | Optical interferometer |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100568345B1 (en) * | 2001-11-21 | 2006-04-05 | 주식회사 포스코 | Apparatus for measuring speed of strip using single mode optical fiber |
CN117074719A (en) * | 2023-05-17 | 2023-11-17 | 山东省科学院海洋仪器仪表研究所 | Photon counting coherent ocean flow field velocity measurement system and method with self-adaptive local oscillation light |
CN117074719B (en) * | 2023-05-17 | 2024-01-09 | 山东省科学院海洋仪器仪表研究所 | Photon counting coherent ocean flow field velocity measurement system and method with self-adaptive local oscillation light |
Also Published As
Publication number | Publication date |
---|---|
JP2592254B2 (en) | 1997-03-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |