CN201083753Y - Laser self frequency-mixing type velarium target - Google Patents
Laser self frequency-mixing type velarium target Download PDFInfo
- Publication number
- CN201083753Y CN201083753Y CNU2007200945181U CN200720094518U CN201083753Y CN 201083753 Y CN201083753 Y CN 201083753Y CN U2007200945181 U CNU2007200945181 U CN U2007200945181U CN 200720094518 U CN200720094518 U CN 200720094518U CN 201083753 Y CN201083753 Y CN 201083753Y
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- CN
- China
- Prior art keywords
- laser
- shell
- photodetector
- target
- opto
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- 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 - Fee Related
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Abstract
The utility model discloses a laser self-mixing type sky screen, wherein a large aperture convex lens is arranged on the upper part of a cuboid outer shell and close to the left side; a base in the outer shell is fixedly provided with a flat reflector and a cylindrical lens from left to right; the right side of the outer shell is provided with a photoelectric switching type laser device which comprises a laser and a photoelectric switching device; the power input ends of the laser and the photoelectric switching device are connected with an external power source by a laser power line and a photodetector power line; the utility model has the advantages of convenient use, high measuring precision and compact structure, etc.
Description
Technical field
The utility model is to belong to a kind of photoelectric conversion device, is specifically related to a kind of canopy of the heavens target that rate signal is converted to electric signal measurement projectile flight speed by laser beam.
Background technology
Existing laser canopy of the heavens target adopts two point form more, has both measured bullet and has passed through the used time of this spacing by two light interludes apart from reaching, thereby calculated flying speed, has the checkout equipment complexity, problems such as detection sensitivity difference.
Summary of the invention
The purpose of this utility model is according to the problems referred to above, and a kind of simple in structure, the laser self-mixing translation formula canopy of the heavens target that can realize the high-sensitivity measurement velocity of shot is provided.
The technical scheme that its technical matters that solves the utility model adopts is: be provided with the large-caliber convex lens in the rectangular parallelepiped shell upper housing side of taking back, enclosure base top to left-hand parts on the right side and is not fixed with plane inclined catoptron, upright post lens, and the shell right side is provided with opto-electronic conversion formula laser aid.
Described opto-electronic conversion formula laser aid comprises laser instrument and photoelectric conversion device.
Described opto-electronic conversion formula laser aid is that the support of the laser holder that is equipped with of shell inboard is provided with laser instrument, the laser instrument laser output position of shell is provided with the laser emitting mouth, described photoelectric conversion device comprises the photodetector that is equipped with on the photodetector support that is equipped with in the housing, the Laser Power Devices line that is electrically connected on photodetector and the power lead fixed head, photodetector power lead and signal wire.
The output line of described photoelectric conversion device connects outside signal supervisory instrument.
Its principle of work is that this canopy of the heavens target assembly is placed the fixing horizontal table top, projectile transmitting device and surface level are angled, open the laser power supply switch, the emission bullet, give off laser beam by laser instrument, through the column cap mirror light velocity is expanded to gradually wide matrix shape light beam, reflexing to convex lens by plane mirror makes light beam become wide sheet beam, when bullet is injected in the wide light beam,, the reflection of bullet and scattering process form the laser self-mixing translation interference in the laser chamber because having part light to reenter through the collection of large-caliber convex lens and along original optical path.The self-mixing interference signal is sent into photoelectric commutator mixing, sampling, FFT conversion through the laser afterbody can get the bullet frequency f, can be calculated the flying speed of bullet by following formula:
Wherein, λ is an optical maser wavelength, and υ is a projectile flight speed, and n is an air refraction, and the α angle is the angle of beam direction and velocity of shot direction.
The utlity model has simple in structure, easy to use, compact conformation, can realize characteristics such as high-sensitivity measurement velocity of shot.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an opto-electronic conversion formula laser aid enlarged diagram.
Embodiment
In Fig. 1 and Fig. 2, the upper body of rectangular parallelepiped shell 1 side of taking back is provided with large-caliber convex lens 5, shell 1 internal base 2 tops to left-hand parts on the right side and is not fixed with plane inclined catoptron 6, upright post lens 4, and the shell right side is provided with opto-electronic conversion formula laser aid 3.
Described opto-electronic conversion formula laser aid 3 comprises laser instrument 11 and photoelectric conversion device.
Described opto-electronic conversion formula laser aid 3 is that the support 20 of the laser holder 16 that is equipped with of shell 12 inboards is provided with laser instrument 11, the laser instrument 11 laser output position of shell 12 is provided with laser emitting mouth 21, described photoelectric conversion device comprises the photodetector 17 that is equipped with on the photodetector support 15 that is equipped with in the housing 12, the Laser Power Devices line 18, photodetector power lead 19 and the signal wire 13 that are electrically connected on photodetector 17 and the power lead fixed head 14.
The power input of laser instrument 11 and photoelectric conversion device is connected with external power supply by Laser Power Devices line 18 and photodetector power lead 19.
Described laser instrument 11 is a semiconductor laser, and its operating voltage is direct current 4.5v, and the semiconductor laser 11 that proposes in the utility model as required can replace by gas laser.
During work this canopy of the heavens target assembly shell 1 is placed the fixing horizontal table top, open the laser power supply switch, emission bullet 8, projectile transmitting device 9 is angled with surface level, bullet transmit direction and light beam angulation 10, it is the α angle, give off laser beam 7 by laser instrument, through post lens 4 light velocity is expanded to gradually wide matrix shape light beam, reflex to convex lens 5 by plane mirror 6, make light beam become wide sheet beam, when bullet 8 is injected in the wide light beam, form the laser self-mixing translation interference in laser instrument 11 chambeies because the reflection of bullet 8 and scattering process have part light to reenter through 5 collections of large-caliber convex lens and along original optical path 7.The self-mixing interference signal is sent into photoelectric commutator mixing, sampling, FFT conversion through the laser afterbody and can be got the bullet frequency f, and calculate the speed of bullet with computing formula.
Claims (2)
1. a laser self-mixing translation formula canopy of the heavens target is characterized in that; The upper body of rectangular parallelepiped shell (1) side of taking back is provided with large-caliber convex lens (5), shell (1) internal base (2) top to left-hand parts on the right side and is not fixed with plane inclined catoptron (6), upright post lens (4), and the shell right side is provided with opto-electronic conversion formula laser aid (3).
2. laser self-mixing translation formula according to claim 1 canopy of the heavens target is characterized in that; Described opto-electronic conversion formula laser aid (3) comprises laser instrument (11) and photoelectric conversion device, described opto-electronic conversion formula laser aid (3) is that the support (20) of the laser holder (16) that is equipped with of shell (12) inboard is provided with laser instrument (11), laser instrument (11) the laser output position of shell (12) is provided with laser emitting mouth (21), described photoelectric conversion device comprises the photodetector (17) that is equipped with on the photodetector support (15) that is equipped with in the housing (12), and photodetector (17) and power lead fixed head (14) are gone up the Laser Power Devices line (18) that is electrically connected, photodetector power lead (19) and signal wire (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200945181U CN201083753Y (en) | 2007-10-19 | 2007-10-19 | Laser self frequency-mixing type velarium target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200945181U CN201083753Y (en) | 2007-10-19 | 2007-10-19 | Laser self frequency-mixing type velarium target |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083753Y true CN201083753Y (en) | 2008-07-09 |
Family
ID=39626222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200945181U Expired - Fee Related CN201083753Y (en) | 2007-10-19 | 2007-10-19 | Laser self frequency-mixing type velarium target |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083753Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943549A (en) * | 2010-08-03 | 2011-01-12 | 西安工业大学 | All-weather speed-measuring sky screen target |
-
2007
- 2007-10-19 CN CNU2007200945181U patent/CN201083753Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943549A (en) * | 2010-08-03 | 2011-01-12 | 西安工业大学 | All-weather speed-measuring sky screen target |
| CN101943549B (en) * | 2010-08-03 | 2013-03-20 | 西安工业大学 | All-weather speed-measuring sky screen target |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |