CN208488541U - A kind of laser sensor structure - Google Patents
A kind of laser sensor structure Download PDFInfo
- Publication number
- CN208488541U CN208488541U CN201820309095.9U CN201820309095U CN208488541U CN 208488541 U CN208488541 U CN 208488541U CN 201820309095 U CN201820309095 U CN 201820309095U CN 208488541 U CN208488541 U CN 208488541U
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- Prior art keywords
- light
- slit
- laser
- light beam
- laser detector
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Abstract
A kind of laser sensor structure, including laser emitter, laser detector, the end of laser emitter are provided with light penetrating slit, and the two sides of light penetrating slit are installed with the light barrier of upward Zhi Li；The end of laser detector, which is provided with, connects light slit, and the two sides for connecing light slit are installed with the light barrier of downward Zhi Li；Light penetrating slit is mutually fitted with the size for connecing light slit.When projecting on object, cylindric light beam is projected as a circle, and grow the strip that is projected as of blocky light beam, its width greatly reduces, thus also reduces the width of the reflected beams, so that after the reflected beams must be entirely through light slit be connect, it could be identified and be received by laser detector, columned light beam only part is received by laser detector and just can identify in compared with the existing technology, and the utility model is since received requirement is more stringent, thus positional accuracy is higher.
Description
Technical field
The utility model relates to sensor, especially a kind of laser sensor structure.
Background technique
Laser sensor is the sensor measured using laser technology.It by laser emitter, laser detector and
Measuring circuit composition.Laser sensor is new type measuring instrument table, and its advantages are to be able to achieve contactless telemeasurement, speed
Fastly, range is big, and anti-light, electrical interference ability is strong etc..When laser sensor works, first emitted by laser emitting diode alignment target
Laser pulse.Laser is scattered to all directions after target reflects.Some scattered light returns to transducer receivers, by optical system
It is imaged on avalanche photodide after reception.Avalanche photodide is a kind of optical sensing of the inside with enlarging function
Device, therefore it can detect extremely faint optical signal, and be translated into corresponding electric signal.Commonly laser ranging sensing
Device, it is issued to return from light pulse and is received the time experienced by recording and handling, and can measure target range.Laser
Sensor must extremely accurately measure transmission time, because the light velocity is too fast.
The deficiencies in the prior art are that its projection on object of the light beam that existing laser emitter is emitted is in circle
Column, and the cylinder that light beam is projected on object amplifies by a degree of imaging, and the range of scattering light expands
Greatly, so that the positioning of scattering anaclasis return sensing receiver is not very accurate.Swash if certain positioning operations need to rely on
Optical sensor uses existing laser sensor, it will generating biggish error leads to operation quality decline or even be unable to complete.
Utility model content
The utility model is directed to one kind can be with pinpoint laser sensor structure.
A kind of laser sensor structure, including laser emitter, laser detector, the end of laser emitter are provided with
Light slit, the two sides of light penetrating slit are installed with the light barrier of upward Zhi Li；The end of laser detector, which is provided with, connects light slit, connects light slit
Two sides are installed with the light barrier of downward Zhi Li；Light penetrating slit is mutually fitted with the size for connecing light slit.
Laser emitter projects columned light beam, and when light beam reaches light penetrating slit, only the light of beam center can be worn
Light penetrating slit is crossed, remaining light of light beam is blocked, and light barrier has blocked scattering light of the light beam at light penetrating slit, will be columned
The block-like light beam of filtered light beam growth, when projecting on object, long bulk light beam is projected as strip, and width subtracts significantly
It is small, thus also reduce the width of the reflected beams.Back reflection is to light slit is connect on long bulk light beam projecting to object, due to reducing
The width of the reflected beams, so that could be identified and be received by laser detector after the reflected beams must be entirely through light slit be connect,
Columned light beam only part is received by laser detector and just can identify in compared with the existing technology, the utility model due to
Received requirement is more stringent, thus positional accuracy is higher.
Detailed description of the invention
Fig. 1 is the schematic diagram of laser emitting module；
Fig. 2 is the schematic diagram of laser pick-off module；
Fig. 3 is the overall schematic of sensor.
Specific embodiment
As shown in Fig. 1 ~ 3, a kind of laser sensor structure, including laser emitter, laser detector, which is characterized in that
The end of laser emitter is provided with light penetrating slit 1, and the two sides of light penetrating slit are installed with the light barrier of upward Zhi Li；Laser detector
End, which is provided with, connects light slit 2, and the two sides for connecing light slit are installed with the light barrier of downward Zhi Li；Light penetrating slit and the size phase for connecing light slit
It is suitable.
Laser emitter projects columned light beam, and when light beam reaches light penetrating slit, only the light of beam center can be worn
Light penetrating slit is crossed, remaining light of light beam is blocked, and light barrier has blocked scattering light of the light beam at light penetrating slit, will be columned
The block-like light beam of filtered light beam growth；Back reflection connects light slit and light penetrating slit to light slit is connect on long bulk light beam projecting to object
Size is mutually fitted, thus it is to be reflected after light beam be integrally fully contemplated to connect in light slit, could by laser detector identify and receive.
The utility model has the advantage of when projecting on object, cylindric light beam is projected as a circle, and long block
Shape light beam is projected as strip, and width greatly reduces, thus also reduces the width of the reflected beams, so that the reflected beams must
After must be entirely through light slit be connect, could by laser detector identify and receive, compared with the existing technology in columned light beam only
Having part to be received by laser detector just can identify, the utility model positions quasi- since received requirement is more stringent
Exactness is higher.
Further, the light barrier is obliquely arranged inwardly.Setting concentrates light beam more in this way, avoids scattering light pair
The interference of light beam.
Claims (2)
1. a kind of laser sensor structure, including laser emitter, laser detector, it is characterised in that: the end of laser emitter
Portion is provided with light penetrating slit, and the two sides of light penetrating slit are installed with the light barrier of upward Zhi Li；The end of laser detector, which is provided with, connects light
Seam, the two sides for connecing light slit are installed with the light barrier of downward Zhi Li；Light penetrating slit is mutually fitted with the size for connecing light slit.
2. a kind of laser sensor structure according to claim 1, it is characterised in that: light barrier is obliquely arranged inwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820309095.9U CN208488541U (en) | 2018-03-06 | 2018-03-06 | A kind of laser sensor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820309095.9U CN208488541U (en) | 2018-03-06 | 2018-03-06 | A kind of laser sensor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208488541U true CN208488541U (en) | 2019-02-12 |
Family
ID=65255064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820309095.9U Expired - Fee Related CN208488541U (en) | 2018-03-06 | 2018-03-06 | A kind of laser sensor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208488541U (en) |
-
2018
- 2018-03-06 CN CN201820309095.9U patent/CN208488541U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190212 |