JPS5497469A - Laser speed measuring apparatus - Google Patents
Laser speed measuring apparatusInfo
- Publication number
- JPS5497469A JPS5497469A JP455078A JP455078A JPS5497469A JP S5497469 A JPS5497469 A JP S5497469A JP 455078 A JP455078 A JP 455078A JP 455078 A JP455078 A JP 455078A JP S5497469 A JPS5497469 A JP S5497469A
- Authority
- JP
- Japan
- Prior art keywords
- light
- measured
- specular reflection
- convex lens
- focus
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/50—Systems of measurement based on relative movement of target
- G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
PURPOSE:To measure the speed of steel plate or the like having large line fluctuations at high precision, by receiving specular reflection scattered lights of reference light and specimen light radiated to the object being measured through a long- focus convex lens by way of the same lon-focus convex lens effectively. CONSTITUTION:Specular reflection component light S' of the scattered light of the specimen light S radiated on the object being measured 5 through a long-focus condenser convex lens 4 and specular reflection component light R' of the reference light R are passed into semi-transparent mirrors 12, 11 placed on the R side and S side of the optical path and a light receiving lens 6 to be led into a photo detector 7 by way of an aperture 10. By so constituting, the respective specular reflection components of the scattered light of the R light and S light reflected by the object being measured 5 may be effectively received, so that a signal of frequency excelling in signal-to-noise ratio S/N may be obtained at the output of the photo detector 7. Hence, the speed of steep plate or the like having large fluctuations of distance and angle in the line may be measured in non-contact state and at high precision.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP455078A JPS5497469A (en) | 1978-01-19 | 1978-01-19 | Laser speed measuring apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP455078A JPS5497469A (en) | 1978-01-19 | 1978-01-19 | Laser speed measuring apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5497469A true JPS5497469A (en) | 1979-08-01 |
Family
ID=11587150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP455078A Pending JPS5497469A (en) | 1978-01-19 | 1978-01-19 | Laser speed measuring apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5497469A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4470696A (en) * | 1981-10-14 | 1984-09-11 | Systems Research Laboratories, Inc. | Laser doppler velocimeter |
US5726743A (en) * | 1994-05-27 | 1998-03-10 | Societe Nationale Industielle Et Aerospatiale | Laser observation space instrument and a space vehicle including it |
-
1978
- 1978-01-19 JP JP455078A patent/JPS5497469A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4470696A (en) * | 1981-10-14 | 1984-09-11 | Systems Research Laboratories, Inc. | Laser doppler velocimeter |
US5726743A (en) * | 1994-05-27 | 1998-03-10 | Societe Nationale Industielle Et Aerospatiale | Laser observation space instrument and a space vehicle including it |
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