CN208059800U - A kind of direct-injection type laser triangle displacement sensor - Google Patents
A kind of direct-injection type laser triangle displacement sensor Download PDFInfo
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- CN208059800U CN208059800U CN201820457279.XU CN201820457279U CN208059800U CN 208059800 U CN208059800 U CN 208059800U CN 201820457279 U CN201820457279 U CN 201820457279U CN 208059800 U CN208059800 U CN 208059800U
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Abstract
The utility model discloses a kind of direct-injection type laser triangle displacement sensors, including semiconductor laser, diversing lens group, receiving lens group and photodetector, semiconductor laser and the coaxial front end for being sequentially arranged in testee of diversing lens group form transmitting terminal；Receiving lens group and photodetector are coplanar with receiving terminal and form receiving terminal；Collimation focusing of the laser of semiconductor laser Jing Guo diversing lens group, three position A being radiated on testee0、B0And C0, testee is vertical with the optical axis of transmitting terminal；Testee is in position A0、B0And C0On reflection light through inclination and eccentric setting receiving lens group after corresponding facula position A is formed on photodetector1、B1And C1.The direct-injection type laser triangle displacement sensor of this patent realizes high-precision micro-displacement measurement, hot spot very little, and diameter is about 30 μm, and performance is stable and at low cost, realizes the measurement to body surface minor detail.
Description
Technical field
The utility model is related to a kind of laser triangle displacement sensor, more particularly to a kind of direct-injection type laser triangulation displacement passes
Sensor belongs to technical field of electro-optical measurement.
Background technology
Because the displacement sensor based on laser triangulation principle has the advantages quilts such as non-contact, high-precision, high reliability
It is widely applied.Currently, existing laser triangulation device or method all use vertical irradiation object, received from side
Form measure, the displacement of the good object of surface scattering characteristic can be accurately measured, but to minute surface emit it is very strong
The displacement of object can not accurately measure.
Utility model content
The purpose of the utility model is to provide a kind of direct-injection type laser triangle displacement sensor, which can be into
The high-precision micro-displacement measurement of row.
To achieve the above object, the technical solution adopted in the utility model is, a kind of direct-injection type laser triangulation displacement biography
Sensor, including semiconductor laser, diversing lens group, receiving lens group and photodetector, the semiconductor laser and hair
The coaxial front end for being sequentially arranged in testee of lens group is penetrated, transmitting terminal is formed；The receiving lens group and photodetector with
Receiving terminal is coplanar and forms receiving terminal；Collimation focusing of the laser of the semiconductor laser Jing Guo diversing lens group, is radiated at
Three position A on testee0、B0And C0, testee is vertical with the optical axis of transmitting terminal, i.e. single-point direct-injection type；Testee
In position A0、B0And C0On reflection light through inclination and the receiving lens group of eccentric setting after formed on photodetector
Corresponding facula position A1、B1And C1。
Preferably, the transmitting terminal generates dot laser, the receiving terminal receives dot laser.
Preferably, the receiving lens group does inclination or eccentric setting relative to photodetector optical axis c.
Preferably, the diversing lens group and receiving lens group are made of the lens of several coaxial settings.
Preferably, the photodetector is linear array photosensitive element or face battle array photosensitive element, in this patent preferably
High-resolution linear array photosensitive element, small, light-weight and performance are good.
Preferably, the signal processing circuit includes FPGA/CPLD processors, signal condition unit, simulation numeral turn
Change unit, serial/parallel conversion transmission unit；The signal condition unit is connect with photodetector to receive the electricity of photodetector
Signal, output end are connect with analog digital converting unit to output digit signals, and FPGA/CPLD processors are used for above-mentioned
Signal is handled and obtains the displacement of testee.
The beneficial effects of the utility model：The direct-injection type laser triangle displacement sensor of this patent, realizes high-precision
Micro-displacement measurement, emitting portion are equivalent to laser focusing system, hot spot very little, and diameter is about 30 μm, performance it is stable and at
This is low, realizes the measurement to body surface minor detail.The design margin of optical system in this patent is big, product seriation
It is more preferable with the compatibility of photosensitive element；And it is increased without any cost, the reception lens barrel position of optical system need to be only adjusted, by it
It does inclination or bias puts the photoelectric properties that can improve direct-injection type laser displacement sensor.
Description of the drawings
It, below will be to institute in embodiment or description of the prior art in order to illustrate more clearly of the technical solution of the utility model
Attached drawing to be used is needed to be briefly described.
Fig. 1 is the vertical view of the utility model；
Fig. 2 is the left view of the transmitting terminal of the utility model；
In figure：1. semiconductor laser, 2. diversing lens groups, 3. position A0, 4. position B0, 5. position C0, 6. receiving lens
Group, 7. photodetectors, 8. facula position A1, 9. facula position B1, 10. facula position C1, the optical axis of a. diversing lens groups, b.
The optical axis of receiving lens group, c. receive the primary optical axis of system.
Specific implementation mode
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with embodiment pair
Technical solution in the application is clearly and completely described.
As shown in Figure 1, the utility model discloses a kind of direct-injection type laser triangle displacement sensor, including semiconductor laser
Device 1, diversing lens group 2, receiving lens group 6 and photodetector 7, the semiconductor laser 1 and diversing lens group 2 it is coaxial according to
The secondary front end for being arranged in testee forms transmitting terminal；The receiving lens group 6 and photodetector 7 and receiving terminal are coplanar simultaneously
Form receiving terminal；Collimation focusing of the laser of the semiconductor laser 1 Jing Guo diversing lens group 2, is radiated on testee
Three position A0、B0And C0, i.e., the label 3,4 and 5 as in, testee is vertical with the optical axis of transmitting terminal, as single-point direct projection
Formula；Testee is in position A0、B0And C0On reflection light through inclination and eccentric setting receiving lens group 6 after in photoelectricity
Corresponding facula position A is formed on detector 71、B1And C1, i.e., 8,9 and 10 in figure.
The transmitting terminal generates dot laser, and the receiving terminal receives dot laser.
The receiving lens group 6 does inclination or eccentric setting relative to 7 optical axis c of photodetector.
The diversing lens group 2 and receiving lens group 6 are made of the lens of several coaxial settings by several coaxial settings
Lens constitute.
The photodetector 7 is linear array photosensitive element or face battle array photosensitive element, in this patent preferred high-resolution
Face battle array photosensitive element, small, light-weight and performance is good.
Preferably, signal processing circuit includes FPGA/CPLD processors, signal condition unit, Analog-digital Converter list
Member, serial/parallel conversion transmission unit；The signal condition unit is connect with photodetector to receive the telecommunications of photodetector
Number, output end is connect with analog digital converting unit to output digit signals, and FPGA/CPLD processors are used for above-mentioned letter
It number is handled and obtains the displacement of testee.
Described embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on this reality
It is obtained by those of ordinary skill in the art without making creative efforts every other with the embodiment in novel
Embodiment shall fall within the protection scope of the present invention.
Claims (5)
1. a kind of direct-injection type laser triangle displacement sensor, including semiconductor laser (1), diversing lens group (2), receiving lens
Group (6) and photodetector (7), the semiconductor laser (1) and diversing lens group (2) is coaxial is sequentially arranged in testee
Front end, formed transmitting terminal；The receiving lens group (6) and photodetector (7) are coplanar with receiving terminal and form receiving terminal；Its
It is characterized in that, the collimation focusing of the laser of the semiconductor laser (1) Jing Guo diversing lens group (2) is radiated at testee
On three position A0、B0And C0(3,4,5), testee is vertical with the optical axis of transmitting terminal, i.e. single-point direct-injection type；Testee
In position A0、B0And C0Reflection light on (3,4,5) is visited after tilting the receiving lens group (6) with eccentric setting in photoelectricity
It surveys on device (7) and forms corresponding facula position A1、B1And C1(8,9,10).
2. direct-injection type laser triangle displacement sensor according to claim 1, which is characterized in that the transmitting terminal generates point
Laser, the receiving terminal receive dot laser.
3. direct-injection type laser triangle displacement sensor according to claim 2, which is characterized in that the receiving lens group
(6) inclination or eccentric setting are done relative to photodetector optical axis c.
4. direct-injection type laser triangle displacement sensor according to claim 2 or 3, which is characterized in that the diversing lens
Group (2) and receiving lens group (6) are made of the lens of several coaxial settings.
5. direct-injection type laser triangle displacement sensor according to claim 4, which is characterized in that the photodetector
(7) it is linear array photosensitive element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820457279.XU CN208059800U (en) | 2018-04-03 | 2018-04-03 | A kind of direct-injection type laser triangle displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820457279.XU CN208059800U (en) | 2018-04-03 | 2018-04-03 | A kind of direct-injection type laser triangle displacement sensor |
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| Publication Number | Publication Date |
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| CN208059800U true CN208059800U (en) | 2018-11-06 |
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| CN201820457279.XU Active CN208059800U (en) | 2018-04-03 | 2018-04-03 | A kind of direct-injection type laser triangle displacement sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029012A (en) * | 2021-04-09 | 2021-06-25 | 海南热带海洋学院 | Combined type ocean oil spill oil film thickness measurement structure |
-
2018
- 2018-04-03 CN CN201820457279.XU patent/CN208059800U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029012A (en) * | 2021-04-09 | 2021-06-25 | 海南热带海洋学院 | Combined type ocean oil spill oil film thickness measurement structure |
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| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 Floor 1, Building E, Huafeng International Robot Industrial Park, Nanchang Community Avenue, Xixiang Street, Baoan District, Shenzhen City, Guangdong Province Patentee after: Hebson Technology (Shenzhen) Co., Ltd. Address before: 518100 Room 526, Block A, Baoan Zhigu Science Park, 4 Yintian Road, Xixiang Street, Baoan District, Shenzhen City, Guangdong Province Patentee before: Hebson Technology (Shenzhen) Co., Ltd. |