CN214252007U - High-precision transflective adjusting platform of 360-degree terahertz time-domain spectroscopy system - Google Patents
High-precision transflective adjusting platform of 360-degree terahertz time-domain spectroscopy system Download PDFInfo
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- CN214252007U CN214252007U CN202022766448.8U CN202022766448U CN214252007U CN 214252007 U CN214252007 U CN 214252007U CN 202022766448 U CN202022766448 U CN 202022766448U CN 214252007 U CN214252007 U CN 214252007U
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Abstract
The utility model discloses a 360 platform is adjusted in high accuracy transflective of 360 degrees terahertz time domain spectroscopy system, belong to terahertz spectrum and imaging technology field now, it is including transmission light path unit, detection light path unit, circular scale and drive unit, transmission light path unit and detection light path unit are installed along the radius direction of circular scale and are set up, transmission light path unit or detection light path unit are connected with drive unit, under drive unit's drive, transmission light path unit rotates around circular scale centre of a circle for detection light path unit, realize the adjustment of 0-360 ℃ arbitrary contained angle between detection light path unit optical axis and the transmission light path unit optical axis as required, provide a stability, it is accurate, unanimous measuring environment for terahertz spectral analysis and terahertz spectral imaging analysis now.
Description
The technical field is as follows:
the utility model belongs to the technical field of terahertz spectrum and imaging, concretely relates to platform is adjusted to 360 degrees terahertz time domain spectroscopy system high accuracy transflectance.
Background art:
the terahertz time-domain spectroscopy system (TDS for short) based on the photoconductive antenna is the most mature terahertz spectroscopy product at present. The basic principle is as follows: the optical fiber femtosecond laser device emits two beams of femtosecond laser, one beam is used as pump light and is transmitted to a photoconductive emission antenna through an optical fiber, broadband terahertz waves are generated under the action of bias voltage, and the terahertz waves carry information of a test sample to enter a terahertz detection antenna (namely an emission light path) in a transmission or reflection mode and the like; the other beam is used as detection light and enters the terahertz detection antenna (namely a detection light path) through the optical delay line; the terahertz waves carrying the sample information meet the detection light, are received by the terahertz detection antenna, and carry out quantitative and qualitative identification on the sample through the spectrum analysis technology.
When reflection and transmission are measured in the existing terahertz spectrum and imaging system, an integrated system is not available, reflection and transmission light paths need to be built respectively, and most of the reflection and transmission light paths are manually adjusted in angle and are not accurate enough.
The utility model has the following contents:
the utility model discloses aim at overcomes the shortcoming that prior art exists, seeks to design a 360 degrees high accuracy transflectance and adjusts platform, has solved the automatic switching problem of transmission light path and transmission light path among terahertz spectrum and the imaging system now. The utility model discloses a motor drives transmission light path unit, surveys the rotation that the light path unit was arbitrary angle, adopts grating ruler real-time feedback transmission light path unit, surveys the light path unit position to make transmission light path unit, survey the light path unit and form accurate appointed contained angle, reach and realize transmission, reflectance measurement's purpose in a platform.
In order to realize the above-mentioned purpose, the utility model relates to a 360 degree terahertz time domain spectroscopy system high accuracy transflects and reflects regulation platform now, including emission light path unit, survey the light path unit, circular scale and drive unit, emission light path unit and survey the light path unit and set up along the installation of the radius direction of circular scale, emission light path unit or survey the light path unit and be connected with drive unit, under drive unit's drive, emission light path unit rotates around circular scale centre of a circle for surveying the light path unit, realize the adjustment of 0-360 ℃ arbitrary contained angle between survey light path unit optical axis and the emission light path unit optical axis as required.
Further, 360 high accuracy transflective adjustment platform of degree terahertz time-domain spectroscopy system now still includes the sample support, emission light path grating chi and detection light path grating chi, the sample support is installed in circular scale centre of a circle department, and the sample hole on the sample support is located the crossing point department of detection light path unit optical axis and emission light path unit optical axis just, emission light path grating chi and detection light path grating chi are fixed respectively on emission light path unit, detection light path unit, along with emission light path unit, detection light path unit motion, the scale on the circular scale of real-time response, the real-time angular position of feedback emission light path unit, detection light path unit.
Further, the emission light path unit comprises a terahertz emission antenna, a first collimating lens and a first focusing lens, the detection light path unit comprises a second focusing lens, a second collimating lens and a terahertz detection antenna, the terahertz emission antenna, the first collimating lens and the first focusing lens, the second collimating lens and the terahertz detection antenna are sequentially and fixedly mounted according to design focal lengths, the terahertz emission antenna, the first collimating lens and the first focusing lens are sequentially and fixedly mounted on the emission light path connecting rod, the second collimating lens and the terahertz detection antenna are sequentially and fixedly connected to the detection light path connecting rod, and the emission light path grating ruler and the detection light path grating ruler are respectively fixed at the intersection of the orthographic projection of the circular scale and the emission light path connecting rod and the detection light path connecting rod.
Preferably, the driving unit is fixed on the circular axis of the circular scale and is directly connected with the emission light path unit or the detection light path unit.
As an implementation mode, the driving unit is a double-shaft two-way motor which is composed of two stepping motors, the inner parts of the two stepping motors realize respective motion transmission through a worm gear structure, the double-shaft two-way motor is fixed on a circular staff gauge circular axis, one end of a transmitting light path connecting rod is connected with a first output shaft of the double-shaft two-way motor, the first output shaft of the double-shaft two-way motor drives the transmitting light path connecting rod to move around the circular staff gauge, in the process, a transmitting light path grating ruler detects the position of the transmitting light path connecting rod in real time and feeds back the position of the transmitting light path connecting rod to the double-shaft two-way motor, in the same way, one end of a detecting light path connecting rod is connected with a second output shaft of the double-shaft two-way motor, the second output shaft of the double-shaft two-way motor drives a detecting light path connecting rod to move around the circular staff gauge, in the process, the detecting light path grating ruler detects the position of the detecting light path connecting rod 9 in real time and feeds back the position of the detecting light path connecting rod to the double-shaft two-way motor, and calculating an included angle between the optical axis of the emission light path unit and the optical axis of the detection light path unit based on the position of the emission light path connecting rod and the position of the detection light path connecting rod.
Specifically, the double-shaft bidirectional motor comprises a shell, a first stepping motor and a second stepping motor, wherein a first output shaft of the double-shaft bidirectional motor and a second output shaft of the double-shaft bidirectional motor are sequentially arranged from top to bottom, a gear tooth forming worm part is arranged on the output shaft of the first stepping motor, a gear tooth forming worm part is annularly arranged at the bulge of the first output shaft of the double-shaft bidirectional motor, the output shaft of the first stepping motor horizontally extends into the shell, the first output shaft of the double-shaft bidirectional motor is vertically arranged in the shell, the first output shaft of the double-shaft bidirectional motor is rotationally connected with the shell, the worm part of the output shaft of the first stepping motor is meshed with the turbine part of the first output shaft of the double-shaft bidirectional motor, the gear tooth forming worm part is arranged on the output shaft of the second stepping motor, the gear tooth forming worm part is annularly arranged at the bulge of the second output shaft of the double-shaft bidirectional motor, the output shaft of the second stepping motor horizontally extends into the shell, the second output shaft of the double-shaft two-way motor is vertically arranged in the shell, the lower part of the second output shaft of the double-shaft two-way motor is rotatably connected with the shell, the upper part of the second output shaft of the double-shaft two-way motor is embedded into a through hole formed in the middle of the first output shaft of the double-shaft two-way motor, the first output shaft of the double-shaft two-way motor and the second output shaft of the double-shaft two-way motor are mutually non-interfering and coaxially and fixedly arranged, and the worm rod part of the output shaft of the second stepping motor is meshed with the worm wheel part of the second output shaft of the double-shaft two-way motor.
As another implementation manner, the driving unit comprises a first driving motor and a second driving motor, the first driving motor and the second driving motor are symmetrically installed on the circular staff gauge circular axis from top to bottom, one end of the emission light path connecting rod is connected with the output shaft of the first driving motor, the first driving motor drives the emission light path connecting rod to move around the circular staff gauge, in the process, the position of the transmitting light path connecting rod is detected by the transmitting light path grating ruler in real time, the position of the transmitting light path connecting rod is fed back to the first driving motor, similarly, one end of the detecting light path connecting rod is connected with the second driving motor, the second driving motor drives the detecting light path connecting rod to move around the circular ruler, in the process, the detection light path grating ruler detects the position of the detection light path connecting rod in real time, feeds the position of the detection light path connecting rod back to the second driving motor, and calculates the included angle between the optical axis of the emission light path unit and the optical axis of the detection light path unit based on the position of the emission light path connecting rod and the position of the detection light path connecting rod.
As another implementation manner, the driving unit includes a third driving motor, the third driving motor is installed on the circular axis of the circular scale, any one of the emitting light path connecting rod and the detecting light path connecting rod is connected with the third driving motor, the remaining one of the emitting light path connecting rod and the detecting light path connecting rod is fixed, the third driving motor rotates to drive the emitting light path connecting rod to rotate around the circle center of the circular scale relative to the detecting light path connecting rod, and adjustment of any included angle between the optical axis of the detecting light path unit and the optical axis of the emitting light path unit of 0-360 ℃ is achieved.
Further, the length of emission light path connecting rod and detection light path connecting rod is more than or equal to circular scale radius, and in this within range, circular scale can adjust wantonly in the horizontal direction, and in the detection range of emission light path grating chi and detection light path grating chi, circular scale can adjust wantonly in the vertical direction.
The circular scale and the driving unit are fixed on the bottom plate, and the emission light path grating ruler and the detection light path grating ruler are respectively fixed at the bottoms of the emission unit connecting rod 8 and the detection unit connecting rod through the emission light path supporting rod and the detection light path supporting rod which are vertically arranged.
Compared with the prior art, the utility model following beneficial effect has:
the 1.360-degree high-precision transflective adjusting platform can provide a stable, accurate and consistent measuring environment for terahertz spectrum analysis and terahertz spectrum imaging analysis;
2. the double-shaft bidirectional motor realizes the function of bidirectional angle adjustment, and the grating ruler feeds back the position in real time, so that the accuracy and consistency of the included angle are ensured;
3. the adjustable sample support can be correspondingly adjusted in height according to the sample.
Description of the drawings:
FIG. 1 is the utility model relates to a terahertz time domain spectroscopy system high accuracy transflectance adjusts platform stereogram.
Fig. 2 is a perspective view of the two-shaft two-way motor of fig. 1.
Fig. 3 is a cross-sectional view of the two-shaft two-way motor of fig. 2.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following specific embodiments and accompanying drawings.
Example 1:
the utility model provides a 360 degree terahertz time domain spectroscopy system high accuracy transflectance adjusts platform, including emission light path unit, survey light path unit, circular scale 15 and drive unit, emission light path unit and survey light path unit are installed along the radius direction of circular scale and are set up, emission light path unit or survey light path unit are connected with drive unit, under drive unit's drive, emission light path unit rotates around circular scale centre of a circle for surveying light path unit, realize the adjustment of 0-360 ℃ arbitrary contained angle between survey light path unit optical axis and the emission light path unit optical axis as required, the precision is 0.05 degree.
Further, the high-precision transflective adjusting platform of the 360-degree terahertz time-domain spectroscopy system further comprises a sample support, a transmission light path grating ruler 12 and a detection light path grating ruler 13, wherein the sample support is installed at the circle center of the circular scale, a sample hole 16 in the sample support 14 is just located at the intersection point of the optical axis of the detection light path unit and the optical axis of the transmission light path unit, the transmission light path grating ruler 12 and the detection light path grating ruler 13 are respectively fixed on the transmission light path unit and the detection light path unit, and scales on the circular scale 15 are sensed in real time along with the movement of the transmission light path unit and the detection light path unit to feed back the real-time angle positions of the transmission light path unit and the detection light path unit.
Further, the emission light path unit comprises a terahertz emission antenna 2, a first collimating lens 3 and a first focusing lens 4, the detection light path unit comprises a second focusing lens 7, a second collimating lens 6 and a terahertz detection antenna 5, the terahertz emission antenna 2, the first collimating lens 3 and the first focusing lens 4, and the second focusing lens 7, the second collimating lens 6 and the terahertz detection antenna 5 are respectively and sequentially and fixedly installed according to the design focal length.
The drive unit that this embodiment relates to and transmission light path unit or survey light path unit lug connection, the transmission light path unit that drives to set up or survey light path unit and wholly rotate together, or terahertz emitting antenna 2, first collimating lens 3 and first focusing lens 4 are connected with a drive unit respectively, rotate around circular scale centre of a circle under corresponding drive unit's drive, second focusing lens 7, second collimating lens 6 and terahertz detecting antenna 5 are a drive unit connection respectively, circular scale centre of a circle rotates under corresponding drive unit's drive. In order to ensure the consistency of operation and simplify the structure of the device, the whole emitting light path unit or the whole detecting light path unit rotates together as a preferred scheme.
Preferably, in order to improve the stability and integration of the system and simplify the use process, the driving unit is fixed on the circular axis of the circular scale and is directly connected with the emission light path unit or the detection light path unit. This embodiment 360 degree terahertz time-domain spectroscopy system high accuracy transflect regulation platform still includes emission light path connecting rod 8 and detection light path connecting rod 9, terahertz emission antenna 2, first collimating lens 3 and first focusing lens 4 are fixed mounting in proper order on emission light path connecting rod 8, second focusing lens 7, second collimating lens 6 and terahertz detection antenna 5 are fixed connection in proper order on detection light path connecting rod 9, emission light path grating chi 12 and detection light path grating chi 13 are fixed respectively in the orthographic projection of circular scale and the nodical department of emission light path connecting rod 8 and detection light path connecting rod 9, so that can respond to the angle scale on the circular scale in real time, confirm emission light path unit and detection light path unit position.
As an implementation mode, the driving unit is a double-shaft two-way motor 1 which is composed of two stepping motors, the inner parts of the two stepping motors realize respective motion transmission through a worm gear structure, the double-shaft two-way motor is fixed on a circular scale circular axis, one end of a transmitting light path connecting rod 8 is connected with a first output shaft of the double-shaft two-way motor, the first output shaft of the double-shaft two-way motor drives the transmitting light path connecting rod 8 to move around a circular scale 15, in the process, a transmitting light path grating ruler 12 detects the position of the transmitting light path connecting rod 8 in real time and feeds the position of the transmitting light path connecting rod 8 back to the double-shaft two-way motor, similarly, one end of a detecting light path connecting rod 9 is connected with a second output shaft of the double-shaft two-way motor, the second output shaft of the double-shaft two-way motor drives a detecting light path connecting rod 9 to move around the circular scale 15, and in the process, the detecting light path grating ruler 13 detects the position of the detecting light path connecting rod 9 in real time, and feeding back the position of the detection light path connecting rod 9 to the double-shaft bidirectional motor, and calculating an included angle between an optical axis of the emission light path unit and an optical axis of the detection light path unit based on the position of the emission light path connecting rod 8 and the position of the detection light path connecting rod 9.
Specifically, the double-shaft bidirectional motor comprises a shell, a first stepping motor and a second stepping motor, a first output shaft 101 of the double-shaft bidirectional motor and a second output shaft 102 of the double-shaft bidirectional motor, the first stepping motor and the second stepping motor are sequentially arranged from top to bottom, a gear forming worm part is arranged on the output shaft 103 of the first stepping motor, a gear forming worm part 105 is annularly arranged at the bulge of the first output shaft 101 of the double-shaft bidirectional motor, the output shaft 103 of the first stepping motor horizontally extends into the shell 107, the first output shaft 101 of the double-shaft bidirectional motor is vertically arranged in the shell 107, the first output shaft 101 of the double-shaft bidirectional motor is rotatably connected with the shell 107, the output shaft part of the first stepping motor is meshed with the first output shaft worm part 105 of the double-shaft bidirectional motor, the output shaft 104 of the second stepping motor is provided with the gear forming worm part, a gear forming worm part 106 is annularly arranged at the bulge of the second output shaft 102 of the double-shaft bidirectional motor, the output shaft 104 of the second stepping motor horizontally extends into the shell 107, the second output shaft 102 of the double-shaft two-way motor is vertically arranged in the shell 107, the lower part of the second output shaft 102 of the double-shaft two-way motor is rotatably connected with the shell, the upper part of the second output shaft 102 of the double-shaft two-way motor is embedded into a through hole formed in the middle of the first output shaft 101 of the double-shaft two-way motor, the first output shaft 101 of the double-shaft two-way motor and the second output shaft 102 of the double-shaft two-way motor are mutually non-interfered and coaxially and fixedly arranged, and the worm part of the output shaft of the second stepping motor is meshed with the turbine part 106 of the second output shaft of the double-shaft two-way motor.
As another implementation manner, the driving unit includes a first driving motor and a second driving motor, the first driving motor and the second driving motor are vertically and symmetrically installed on a circular scale circular axis, one end of the emission light path connecting rod 8 is connected with an output shaft of the first driving motor, the first driving motor drives the emission light path connecting rod 8 to move around the circular scale 15, in the process, the emission light path grating ruler 12 detects the position of the emission light path connecting rod 8 in real time, the position of the emission light path connecting rod 8 is fed back to the first driving motor, similarly, one end of the detection light path connecting rod 9 is connected with the second driving motor, the second driving motor drives the detection light path connecting rod 9 to move around the circular scale 15, in the process, the detection light path grating ruler 13 detects the position of the detection light path connecting rod 9 in real time, the position of the detection light path connecting rod 9 is fed back to the second driving motor, and the optical axis of the emission light path unit and the detection light path unit are calculated based on the position of the emission light path connecting rod 8 and the position of the detection light path connecting rod 9 And the included angle between the optical axes of the optical path units. No matter the two-axis two-way motor or the first driving motor and the second driving motor can realize two-way rotation, and the running speeds of the emission light path unit and the detection light path unit are adjusted by adjusting the rotating speed.
As another implementation manner, the driving unit includes a third driving motor, the third driving motor is installed on the circular axis of the circular scale, any one of the emitting light path connecting rod 8 and the detecting light path connecting rod 9 is connected to the third driving motor, the remaining one of the emitting light path connecting rod and the detecting light path connecting rod is fixed, the third driving motor rotates to drive the emitting light path connecting rod 8 to rotate around the center of the circular scale relative to the detecting light path connecting rod 9, and the adjustment of any included angle between the optical axis of the detecting light path unit and the optical axis of the emitting light path unit at 0-360 ℃ is realized.
Further, the lengths of the emission optical path link 8 and the detection optical path link 9 are equal to or greater than the radius of the circular scale, and within this range, the circular scale can be arbitrarily adjusted in the horizontal direction, and within the detection range of the emission optical path grating scale 12 and the detection optical path grating scale 13, the circular scale can be arbitrarily adjusted in the vertical direction.
In order to improve the stability and the convenience of the system, the circular scale and the driving unit are fixed on the bottom plate, and the emission light path grating ruler 12 and the detection light path grating ruler 13 are respectively fixed at the bottoms of the emission unit connecting rod 8 and the detection unit connecting rod 9 through an emission light path supporting rod 10 and a detection light path supporting rod 11 which are vertically arranged.
Claims (10)
- The high-precision transflective adjusting platform of the 1.360-degree terahertz time-domain spectroscopy system is characterized by comprising an emission light path unit, a detection light path unit, a circular scale and a driving unit, wherein the emission light path unit and the detection light path unit are arranged along the radius direction of the circular scale, the emission light path unit or the detection light path unit is connected with the driving unit, the emission light path unit rotates around the circle center of the circular scale relative to the detection light path unit under the driving of the driving unit, and the adjustment of any included angle of 0-360 ℃ between the optical axis of the detection light path unit and the optical axis of the emission light path unit is realized as required.
- 2. The high-precision transflective adjustment platform for the 360-degree terahertz time-domain spectroscopy system of claim 1, further comprising a sample holder, an emission light path grating ruler and a detection light path grating ruler, wherein the sample holder is installed at the center of the circular ruler, and a sample hole on the sample holder is located at the intersection point of the optical axis of the detection light path unit and the optical axis of the emission light path unit, the emission light path grating ruler and the detection light path grating ruler are respectively fixed on the emission light path unit and the detection light path unit, and the scales on the circular ruler are sensed in real time and the real-time angular positions of the emission light path unit and the detection light path unit are fed back along with the movement of the emission light path unit and the detection light path unit.
- 3. The 360-degree terahertz time-domain spectroscopy system high-precision transflective adjusting platform according to claim 2, characterized in that the transmitting optical path unit comprises a terahertz transmitting antenna, a first collimating lens and a first focusing lens, the detection light path unit comprises a second focusing lens, a second collimating lens and a terahertz detection antenna, a terahertz transmitting antenna, a first collimating lens and a first focusing lens, and the second focusing lens, the second collimating lens and the terahertz detection antenna are fixedly installed in sequence according to the designed focal length respectively, the terahertz emission antenna, the first collimating lens and the first focusing lens are fixedly installed on the emission light path connecting rod in sequence, the second focusing lens, the second collimating lens and the terahertz detection antenna are fixedly connected on the detection light path connecting rod in sequence, and the emission light path grating ruler and the detection light path grating ruler are fixed at the intersection of the orthographic projection of the circular ruler and the emission light path connecting rod and the detection light path connecting rod respectively.
- 4. The high-precision transflective adjustment platform for the 360-degree terahertz time-domain spectroscopy system according to any one of claims 1 to 3, wherein the driving unit is fixed on a circular axis of the circular scale and directly connected with the emission light path unit or the detection light path unit.
- 5. The high-precision transflective adjustment platform for the 360-degree terahertz time-domain spectroscopy system of claim 4, wherein the driving unit is a dual-shaft bi-directional motor composed of two stepping motors, the interior of the dual-shaft bi-directional motor realizes respective motion transmission through a worm gear structure, the dual-shaft bi-directional motor is fixed on a circular axis of the circular scale, one end of the emission light path connecting rod is connected with a first output shaft of the dual-shaft bi-directional motor, the first output shaft of the dual-shaft bi-directional motor drives the emission light path connecting rod to move around the circular scale, in the process, the emission light path grating ruler detects the position of the emission light path connecting rod in real time, and feeds back the position of the emission light path connecting rod to the dual-shaft bi-directional motor, and similarly, one end of the detection light path connecting rod is connected with a second output shaft of the dual-shaft bi-directional motor, the second output shaft of the dual-shaft bi-directional motor drives the detection light path connecting rod to move around the circular scale, the detection light path grating ruler detects the position of the detection light path connecting rod in real time, feeds the position of the detection light path connecting rod back to the double-shaft bidirectional motor, and calculates the included angle between the optical axis of the emission light path unit and the optical axis of the detection light path unit based on the position of the emission light path connecting rod and the position of the detection light path connecting rod.
- 6. The high-precision transflective adjustment platform according to claim 5, wherein the dual-axis bi-directional motor comprises a housing, a first stepping motor and a second stepping motor, a first output shaft of the dual-axis bi-directional motor and a second output shaft of the dual-axis bi-directional motor are sequentially arranged from top to bottom, the output shaft of the first stepping motor is provided with a toothed wheel to form a worm rod portion, the protruding portion of the first output shaft of the dual-axis bi-directional motor is annularly provided with a toothed wheel portion, the output shaft of the first stepping motor horizontally extends into the housing, the first output shaft of the dual-axis bi-directional motor is vertically arranged in the housing, the first output shaft of the dual-axis bi-directional motor is rotatably connected with the housing, the worm rod portion of the output shaft of the first stepping motor is engaged with the worm wheel portion of the first output shaft of the dual-axis bi-directional motor, the output shaft of the second stepping motor is provided with a toothed wheel to form a worm rod portion, the gear teeth are arranged at the protruding part of the second output shaft of the double-shaft two-way motor in an annular mode to form a worm wheel part, the output shaft of the second stepping motor horizontally extends into the shell, the second output shaft of the double-shaft two-way motor is vertically arranged in the shell, the lower part of the second output shaft of the double-shaft two-way motor is rotatably connected with the shell, the upper part of the second output shaft of the double-shaft two-way motor is embedded into a through hole formed in the middle of the first output shaft of the double-shaft two-way motor, the first output shaft of the double-shaft two-way motor and the second output shaft of the double-shaft two-way motor are not interfered with each other and are coaxially and fixedly arranged, and the worm wheel part of the output shaft of the second stepping motor is meshed with the second output shaft of the double-shaft two-way motor.
- 7. The high-precision transflective adjustment platform for the 360-degree terahertz time-domain spectroscopy system of claim 4, wherein the driving unit comprises a first driving motor and a second driving motor, the first driving motor and the second driving motor are vertically symmetrically installed on a circular staff, one end of the transmitting light path connecting rod is connected to an output shaft of the first driving motor, the first driving motor drives the transmitting light path connecting rod to move around the circular staff, the transmitting light path grating ruler detects the position of the transmitting light path connecting rod in real time during the process, and feeds back the position of the transmitting light path connecting rod to the first driving motor, and similarly, one end of the detecting light path connecting rod is connected to the second driving motor, the second driving motor drives the detecting light path connecting rod to move around the circular staff, the detecting light path grating ruler detects the position of the detecting light path connecting rod in real time during the process, and feeds back the position of the detecting light path connecting rod to the second driving motor, and calculating an included angle between the optical axis of the emission light path unit and the optical axis of the detection light path unit based on the position of the emission light path connecting rod and the position of the detection light path connecting rod.
- 8. The high-precision transflective adjustment platform for the 360-degree terahertz time-domain spectroscopy system of claim 4, wherein the driving unit comprises a third driving motor, the third driving motor is installed on a circular axis of the circular scale, any one of the emission light path connecting rod and the detection light path connecting rod is connected with the third driving motor, the remaining one of the emission light path connecting rod and the detection light path connecting rod is fixed, the third driving motor rotates to drive the emission light path connecting rod to rotate around the center of the circular scale relative to the detection light path connecting rod, and adjustment of any included angle between the optical axis of the detection light path unit and the optical axis of the emission light path unit at 0-360 ℃ is realized.
- 9. The high-precision transflective adjustment platform for the 360-degree terahertz time-domain spectroscopy system according to any one of claims 5 to 8, wherein the length of the emission optical path connecting rod and the detection optical path connecting rod is greater than or equal to the radius of the circular scale, within which the circular scale can be adjusted freely in the horizontal direction, and within the detection range of the emission optical path grating scale and the detection optical path grating scale, the circular scale can be adjusted freely in the vertical direction.
- 10. The high-precision transflective adjustment platform for the 360-degree terahertz time-domain spectroscopy system of claim 9, wherein the circular scale and the driving unit are both fixed on the bottom plate, and the emission optical path grating ruler and the detection optical path grating ruler are respectively fixed at the bottoms of the emission unit connecting rod 8 and the detection unit connecting rod through an emission optical path supporting rod and a detection optical path supporting rod which are vertically arranged.
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| CN202022766448.8U CN214252007U (en) | 2020-11-26 | 2020-11-26 | High-precision transflective adjusting platform of 360-degree terahertz time-domain spectroscopy system |
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| CN202022766448.8U CN214252007U (en) | 2020-11-26 | 2020-11-26 | High-precision transflective adjusting platform of 360-degree terahertz time-domain spectroscopy system |
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