GB1183492A - Improvements in or relating to Laser Detector Systems - Google Patents
Improvements in or relating to Laser Detector SystemsInfo
- Publication number
- GB1183492A GB1183492A GB2246467A GB2246467A GB1183492A GB 1183492 A GB1183492 A GB 1183492A GB 2246467 A GB2246467 A GB 2246467A GB 2246467 A GB2246467 A GB 2246467A GB 1183492 A GB1183492 A GB 1183492A
- Authority
- GB
- United Kingdom
- Prior art keywords
- laser
- target
- photo
- mirror
- detector
- 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.)
- Expired
Links
- 230000010355 oscillation Effects 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
- G01P3/366—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light by using diffraction of light
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
1,183,492. Laser ranging. BRITISH AIRCRAFT CORP. Ltd. 14 May, 1968 [15 May, 1967], No. 22464/67. Heading H4D. [Also in Division H1] The velocity of a moving target 11, Fig. 2, which may be a particle in a fluid, is measured by illuminating the target with a laser beam, feeding light scattered from the target into one end 15 of the laser 12 so as to heat the scattered light oscillations with the local oscillations in the laser resonator, and feeding the resulting modulated output signal through the opposite end 16 of the laser to a photo-detector 10. An electrical signal is then produced having a frequency equal to the Doppler shift frequency of the scattered light. The laser outputs at the opposing ends 15, 16 are arranged to be high and low, respectively. A prior art arrangement is described, Fig. 1, in which an interferometer is formed by the target 11 and a mirror 14, and the target is illuminated by a laser 12 through a partially reflecting beam splitter 13. The beams reflected from the target and the mirror 14 are recombined at the beam splitter and pass to a photo-detector 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2246467A GB1183492A (en) | 1967-05-15 | 1967-05-15 | Improvements in or relating to Laser Detector Systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2246467A GB1183492A (en) | 1967-05-15 | 1967-05-15 | Improvements in or relating to Laser Detector Systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1183492A true GB1183492A (en) | 1970-03-04 |
Family
ID=10179787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2246467A Expired GB1183492A (en) | 1967-05-15 | 1967-05-15 | Improvements in or relating to Laser Detector Systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1183492A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3732013A (en) * | 1971-04-02 | 1973-05-08 | Us Army | Multipath laser moving target indicator |
| US3950100A (en) * | 1973-03-02 | 1976-04-13 | Raytheon Company | Laser heterodyne system |
| US3958881A (en) * | 1970-11-18 | 1976-05-25 | Raytheon Company | Method of operating a laser oscillator and amplifier |
| US5069545A (en) * | 1989-03-04 | 1991-12-03 | Carl-Zeiss-Stiftung | Laser radar system |
| GB2251150A (en) * | 1990-11-30 | 1992-06-24 | Secr Defence | Laser radar system |
-
1967
- 1967-05-15 GB GB2246467A patent/GB1183492A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3958881A (en) * | 1970-11-18 | 1976-05-25 | Raytheon Company | Method of operating a laser oscillator and amplifier |
| US3732013A (en) * | 1971-04-02 | 1973-05-08 | Us Army | Multipath laser moving target indicator |
| US3950100A (en) * | 1973-03-02 | 1976-04-13 | Raytheon Company | Laser heterodyne system |
| US5069545A (en) * | 1989-03-04 | 1991-12-03 | Carl-Zeiss-Stiftung | Laser radar system |
| GB2251150A (en) * | 1990-11-30 | 1992-06-24 | Secr Defence | Laser radar system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |