CN111442839A - Device capable of switching optical slits on line - Google Patents
Device capable of switching optical slits on line Download PDFInfo
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- CN111442839A CN111442839A CN202010280627.2A CN202010280627A CN111442839A CN 111442839 A CN111442839 A CN 111442839A CN 202010280627 A CN202010280627 A CN 202010280627A CN 111442839 A CN111442839 A CN 111442839A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/04—Slit arrangements slit adjustment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention relates to a device capable of switching optical slits on line, aiming at solving the technical problems that vacuum needs to be released when the slits are replaced and manual operation is needed, and a large amount of time is needed for releasing and regaining the vacuum, so that the efficiency of an optical experiment is greatly reduced and the manual operation is not favorable in the prior art; the longer the total length of the optical slits, the more the device capable of switching the optical slits on-line can switch; switch at every turn and all need not vacuum release and acquire once more, need not manual operation, convenient and fast practices thrift and realizes the cost and improved optics experiment efficiency, can not cause the injury to operating personnel.
Description
Technical Field
The invention relates to an optical slit, in particular to a device capable of switching the optical slit on line.
Background
The current research on laser fusion mainly relies on various optical diagnostic devices; the grating spectrometer is important equipment in optical diagnosis, and the front end of the grating spectrometer is provided with a slit for diffraction, but the slit is easily damaged by target shooting fragments in work and needs to be replaced in time. When using grating spectrometer at present, the damage condition of slit usually can't obtain, just can change the slit when the experimental result is unsatisfactory, and need release the vacuum when changing the slit to manual operation, and the release of vacuum and reacquire need a large amount of time, greatly reduced optical experiment's efficiency, operating personnel receives reactant's pollution easily during manual operation moreover. Therefore, for a grating spectrometer, the damaged condition of the slit needs to be detected in time after the optical experiment, and the slit needs to be switched on line and the working state of the slit can be obtained in real time, so that the operator is prevented from being polluted during manual operation, and the efficiency of the optical experiment is improved.
Disclosure of Invention
The invention aims to solve the technical problems that the damage condition of an optical slit in the prior art cannot be obtained, the slit can be replaced when the experimental result is not ideal, vacuum needs to be released and manual operation is needed when the slit is replaced, a large amount of time is needed for vacuum release and recovery, the efficiency of an optical experiment is greatly reduced, and an operator is easily polluted by reaction substances during manual operation, and provides a device capable of switching the optical slit on line.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an apparatus capable of on-line switching optical slits is characterized in that: the slit motor comprises a slit bracket, a slit motor, a ball screw, a guide rod and an optical slit;
the slit bracket comprises a first U-shaped frame, a first mounting plate and a second mounting plate which are vertically connected with the bottom surface of the first U-shaped frame, and a slit cover plate arranged at an opening of the first U-shaped frame;
an observation window is arranged on the bottom surface of the first U-shaped frame, a light-transmitting window corresponding to the observation window is arranged on the slit cover plate, and the observation window and the light-transmitting window are both positioned between the first mounting plate and the second mounting plate;
the slit motor is fixed on the first mounting plate, an output shaft of the slit motor is connected with one end of a screw rod of the ball screw after penetrating through the first mounting plate, and the other end of the screw rod is rotatably connected with the second mounting plate through a bearing;
the nut of the ball screw is sleeved on a guide rod parallel to the screw rod;
two ends of the guide rod are respectively fixed on the first mounting plate and the second mounting plate;
the optical slit is arranged on the nut, and the total length of the optical slit is more than 2 times of the single-use length of the optical slit;
the length of the light-transmitting window is adapted to the single-use length of the optical slit.
Further, an L ED lamp strip for illuminating the optical slits is arranged on the slit bracket.
Further, the optical slit is mounted on the nut through the slit seat;
a positioning pin is arranged on the slit seat;
the optical slit is positioned by a positioning pin and is pressed by a slit pressing plate.
Furthermore, a microswitch is also arranged on one side of the connection part of the output shaft of the slit motor and the screw rod; the micro switch is used for feeding back zero position information of the optical slit to control the slit motor;
and the nut is provided with a switch touch plate matched with the microswitch.
Further, the single use length of the optical slit is 4 mm;
the total length of the optical slit is 20 mm.
Further, the device also comprises an observation device;
the observation device comprises an observation bracket, an electric translation table and an observation camera;
the observation bracket is connected with the first U-shaped frame;
the electric translation stage is arranged at the rear end of the observation bracket, and the translation table surface of the electric translation stage is parallel to the optical slit;
the observation camera is arranged on the translation table surface of the electric translation table, and the observation end of the observation camera corresponds to the optical slit.
Furthermore, the observation bracket comprises a camera protection bracket and a second U-shaped bracket arranged at the rear end of the camera protection bracket;
the front end of the camera protection frame is connected with the outer side of the bottom surface of the first U-shaped frame;
the electric translation table is arranged on the second U-shaped frame, and a translation guide rail on the electric translation table is parallel to the guide rod;
the observation camera is arranged on the translation table top of the electric translation table through the connecting frame.
Further, the observation support also comprises a mounting substrate on which an exit window is arranged;
the camera protection frame and the second U-shaped frame are both arranged on the mounting substrate;
the camera protection frame is positioned on the side of the emergent window;
the second U-shaped frame is positioned below the emergent window, and one of two parallel surfaces on the second U-shaped frame is positioned below the camera protection frame.
Further, the connecting frame comprises a connecting rod and a third U-shaped frame;
one end of the connecting rod is connected with the translation table top, and the other end of the connecting rod is connected with the third U-shaped frame;
the opening of the third U-shaped frame is vertical to the opening of the second U-shaped frame;
the observation camera is arranged between the two parallel surfaces on the third U-shaped frame;
a waist-shaped hole is formed in one of the two parallel surfaces of the third U-shaped frame;
and a set screw for fixing the observation camera is arranged in the waist-shaped hole.
Further, the observation camera comprises a CCD and a micro lens arranged on the CCD;
the micro lens corresponds to the optical slit.
The invention has the beneficial effects that:
1. the invention sets an optical slit with the total length being 2 times larger than the single-use length of the optical slit, sets a light-passing window corresponding to the single-use length of the optical slit on the slit cover plate, and drives the optical slit to move through a slit motor and a ball screw, thereby realizing the online switching of the single-use optical slit at the light-passing window; the longer the total length of the optical slits, the more the device capable of switching the optical slits on-line can switch; switch at every turn and all need not vacuum release and acquire once more, need not manual operation, convenient and fast practices thrift and realizes the cost and improved optics experiment efficiency, can not cause the injury to operating personnel.
2. The guide rod sleeved in the nut is arranged between the first mounting plate and the second mounting plate; the moving linearity of the optical slit arranged on the nut is good, uncertainty is not introduced, the repeated positioning precision of slit switching is improved, and the reliability of the experiment is greatly improved.
3. The micro switch is arranged above the slit bracket, and the switch touch plate is arranged on the nut; the micro switch is used for determining the initial position of the optical slit, and when the optical slit moves towards the micro switch, the slit motor stops moving immediately once the switch touch plate touches the micro switch, so that the phenomenon that the nut is blocked due to excessive movement is avoided.
4. The rear end of the slit bracket is also provided with an observation device which can be used for inspecting whether the optical slit is complete or not after each realization; if the damage exists, switching in time; the next experiment can be smoothly carried out conveniently, and the experiment efficiency is further improved.
5. The observation camera is installed through the electric translation table, and when the optical slit needs to be inspected, the observation camera is translated to the position, corresponding to the lens and the light-transmitting window, of the observation camera through the electric translation table; when the experiment is carried out, the observation camera is translated into the camera protection frame through the electric translation table, so that the observation camera is prevented from being blocked by light, and the observation camera is protected.
6. According to the invention, the observation camera is arranged on the third U-shaped frame, the waist-shaped hole is formed in the third U-shaped frame, and the fastening screw is arranged in the waist-shaped hole, so that the position of the observation camera can be finely adjusted according to specific use conditions.
7. The observation camera of the invention consists of the CCD and the microscope lens, and has higher observation precision and more accurate observation result.
Drawings
FIG. 1 is a schematic diagram of an apparatus for on-line switching of optical slits according to the present invention (a slit cover plate is not shown);
FIG. 2 is a schematic diagram of FIG. 1 without showing the structure of the optical slit, slit seat, alignment pin and slit hold-down plate;
FIG. 3 is a schematic view, partly in section, of FIG. 2 at another angle;
FIG. 4 is a schematic diagram of an apparatus including a viewing device for on-line switching of optical slits;
fig. 5 is a front view of fig. 3.
In the figure:
1-slit bracket, 11-first U-shaped frame, 12-first mounting plate, 13-second mounting plate, 131-bearing, 14-slit cover plate, 141-light-passing window and 15-L ED lamp strip;
2-a slit motor;
3-ball screw, 31-screw, 32-nut;
4-a guide rod;
5-optical slit, 51-slit seat, 52-positioning pin, 53-slit pressure strip;
6-microswitch, 61-switch touch board;
7-observation device, 71-observation bracket, 711-camera protection bracket, 712-second U-shaped bracket, 713-installation base plate, 713.1-exit window, 72-electric translation table, 721-translation guide rail, 73-observation camera, 731-CCD, 732-microscope lens, 74-connecting bracket, 741-connecting rod, 742-third U-shaped bracket, 742.1-waist-shaped hole and 742.2-set screw;
8-linear bearing.
Detailed Description
To make the objects, advantages and features of the present invention more apparent, a device for on-line switching of optical slits according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following detailed description. It should be noted that: the drawings are in simplified form and are not to precise scale, the intention being solely for the convenience and clarity of illustrating embodiments of the invention; second, the structures shown in the drawings are often part of actual structures.
Example 1:
the device capable of switching optical slits on line of the present embodiment, as shown in fig. 1, includes a slit bracket 1, a slit motor 2, a ball screw 3, a guide rod 4 and an optical slit 5;
the slit bracket 1 comprises a first U-shaped frame 11, a first mounting plate 12 and a second mounting plate 13 which are vertically connected with the bottom surface of the first U-shaped frame 11, and a slit cover plate 14 arranged at the opening of the first U-shaped frame 11; an observation window is arranged on the bottom surface of the first U-shaped frame 11, and a light-transmitting window 141 is arranged on the slit cover plate 14;
referring to fig. 2 and 3, the slit motor 2 is fixed to the first mounting plate 12, an output shaft of the slit motor passes through the first mounting plate 12 and is connected to one end of a screw 31 of the ball screw 3, and the other end of the screw 31 is rotatably connected to the second mounting plate 13 through a bearing 131; the upper end of a nut 32 of the ball screw 3 is sleeved on the screw rod 31, and the lower end is sleeved on the guide rod 4 through a linear bearing 8; the screw 31 and the guide rod 4 are parallel to each other; two ends of the guide rod 4 are respectively fixed on the first mounting plate 12 and the second mounting plate 13;
the optical slit 5 is arranged above the front end face of the nut 32 through a slit seat 51, and a positioning pin 52 is arranged on the slit seat 51; the optical slit 5 is positioned by the positioning pin 52 and is pressed by the slit pressing plate 53; the position of the optical slit 5 corresponds to the observation window and the light-transmitting window 141 respectively, and the length of the optical slit is more than 2 times of the single-use length of the optical slit, so that the optical slit can be switched at least once; the length of the light transmission window 141 is adapted to the single-use length, typically slightly larger than the single-use length.
Specifically, the optical slit 5 is a long and thin slit with a slit width of about 0.05mm and a single-use length of 4 mm; the total length of the optical slit 5 is 20 mm; when the first 4mm single-use length of the optical slit 5 is damaged, the slit motor 2 can drive the nut to rotate and drive the slit seat 51 to move along the guide rod 4, so that the second 4mm single-use length of the optical slit 5 corresponds to the light-transmitting window 141, and therefore, the online switching of the optical slit is realized, and the optical slit 5 with the size of 20mm enables the device to realize five times of switching. The length can be increased or decreased according to the actual use environment.
A switch touch plate 61 is arranged below the front end face of the nut 32, and a microswitch 6 is arranged on one side of the joint of the output shaft of the slit motor 2 and the screw 31 (namely the initial position of the optical slit); the micro switch 6 is used for feeding back the zero position of the optical slit 5, and the micro switch 6 is connected with the slit motor 2 through a control system; when the nut 32 drives the optical slit 5 to move to the zero position in use, the switch touch plate 61 touches the micro switch 6, the micro switch 6 feeds back the zero position information of the optical slit 5 to the control system, and the control system controls the slit motor 2 to stop working immediately, so that faults caused by excessive movement of the nut 32 are avoided.
L ED light strips 15 for illuminating the optical slits are adhered to the slit holder 1. L ED light strips 15 provide uniform illumination for detection of the optical slits 5.
Example 2:
the device of this embodiment capable of switching optical slits on-line is shown in fig. 4 and 5, and has a structure substantially the same as that of embodiment 1, and is different from embodiment 1 in that an observation device 7 is further disposed outside the bottom surface of the first U-shaped frame 11;
the observation device 7 includes an observation bracket 71, a motorized translation stage 72, and an observation camera 73;
the observation bracket 71 includes a camera protection bracket 711, a second U-shaped bracket 712, and a mounting substrate 713;
as shown in fig. 4, the rear end of the camera protection bracket 711 is mounted on the upper right of the mounting substrate 713; an exit window 713.1 for emitting the light source is arranged on the upper left of the mounting substrate 713, the outer side of the bottom surface of the second U-shaped frame 712 is arranged below the mounting substrate 713, the left part of the second U-shaped frame 712 is positioned below the exit window 713.1, and the right part is positioned below the camera protection frame 711;
the front end of the camera protection frame 711 is connected with the outer side of the bottom surface of the first U-shaped frame 11; the electric translation stage 72 is arranged on the second U-shaped frame 712, the translation guide 721 of the electric translation stage 72 is installed between two parallel surfaces of the second U-shaped frame 712, and the translation guide 721 is parallel to the guide rod 4, so that the translation table surface of the electric translation stage 72 is parallel to the optical slit 5; the translation table top is connected with one end of a connecting rod 741 in the connecting frame 74, and the other end of the connecting rod 741 is connected with a third U-shaped frame 742; the opening of the third U-shaped frame 742 faces upward and is perpendicular to the opening of the second U-shaped frame 712; the observation camera 73 is mounted between two parallel surfaces on the third U-shaped frame 742; the observation end of the optical slit corresponds to the optical slit 5, so that the observation is convenient;
the length of the translation guide 721 is greater than that of the guide bar 4 so that the observation camera 73 can be moved to correspond to the light-passing window 141 for observing the optical slit single-use section corresponding to the light-passing window 141.
Therefore, after each test is finished, the observation camera 73 is translated out to correspond to the light-transmitting window 141 through the electric translation table 72, whether the optical slit corresponding to the light-transmitting window 141 is damaged or not is observed through the observation camera 73, and if the optical slit corresponding to the light-transmitting window 141 is damaged, the slit motor 2 is driven to switch the single-use section of the optical slit 5; the next experiment can be conveniently and rapidly carried out; if not, the observation camera 73 is translated into the camera protection frame 711, so that it is prevented from blocking light and protected.
A waist-shaped hole 742.1 is formed in one of two parallel surfaces of the third U-shaped frame 742; a set screw 742.2 for fixing the observation camera 73 is installed in the waist-shaped hole 742.1. So that the installation position of the observation camera 73 can be finely adjusted.
Preferably, the observation camera 73 includes a CCD 731 and is mounted on the CCD 731; the microlens 732 corresponds to the optical slit 5.
The invention relates to a device capable of switching optical slits on line, which comprises the following working processes:
1. in an off-line state, the electric translation stage 72 is driven to enable the CCD 731 and the micro lens 732 to reach the position corresponding to the light-transmitting window 141, and meanwhile, the slit motor 2 is driven to enable a certain section of the optical slit 5 to correspond to the position of the light-transmitting window 141;
2. l ED lamp strip 18 is opened, after the optical slit 5 is observed through CCD 731 and microscope 732 to reach the designated position, the slit motor 2 is powered off, and the electric translation stage 72 is driven to enable the CCD 731 and the microscope 732 to return to the initial positions;
3. when the device is used on line, the device capable of switching the optical slits on line is arranged at the front end of the main body of the grating spectrometer for carrying out an optical experiment;
4. after one experiment, the L ED lamp strip 15 is opened, the electric translation table 72 is driven to the working position, and the damage condition of the optical slit 5 is observed;
if the optical slit 5 is seriously damaged, the slit motor 2 is driven to make the optical slit 5 do linear motion, the CCD 731 and the microscope 732 are used for observing and confirming that the position of another section of intact slit in the optical slit 5 corresponds to the position of the light-passing window 141, and the slit motor 2 is powered off;
if the optical slit 5 is not damaged, the electric translation stage 72 is driven to return the CCD 731 and the micro-lens 732 to the initial positions, and the L ED light strip 15 is closed to complete one slit online detection and switching.
The invention can detect the state of the optical slit on line and switch the optical slit on line without changing the experimental environment (for example, manually switching the optical slit under the condition of releasing vacuum), solves the difficult problems of monitoring and switching the state of the slit in similar physical experiments, and improves the working efficiency of the grating spectrometer.
Claims (10)
1. An apparatus for on-line switching optical slits, comprising: the slit motor comprises a slit bracket (1), a slit motor (2), a ball screw (3), a guide rod (4) and an optical slit (5);
the slit bracket (1) comprises a first U-shaped frame (11), a first mounting plate (12) and a second mounting plate (13) which are vertically connected with the bottom surface of the first U-shaped frame (11), and a slit cover plate (14) arranged at an opening of the first U-shaped frame (11);
an observation window is arranged on the bottom surface of the first U-shaped frame (11), a light-transmitting window (141) corresponding to the observation window is arranged on the slit cover plate (14), and the observation window and the light-transmitting window (141) are both positioned between the first mounting plate (12) and the second mounting plate (13);
the slit motor (2) is fixed on the first mounting plate (12), an output shaft of the slit motor penetrates through the first mounting plate (12) and then is connected with one end of a screw rod (31) of the ball screw (3), and the other end of the screw rod (31) is rotatably connected with the second mounting plate (13);
a nut (32) of the ball screw (3) is sleeved on a guide rod (4) parallel to the screw rod (31);
two ends of the guide rod (4) are respectively fixed on the first mounting plate (12) and the second mounting plate (13);
the optical slit (5) is arranged on the nut (32), and the total length of the optical slit (5) is more than 2 times of the single-use length of the optical slit;
the length of the light transmission window (141) is matched with the single-use length of the optical slit (5).
2. An apparatus for on-line switching of optical slits as claimed in claim 1, wherein:
an L ED lamp strip (15) for illuminating the optical slit (5) is arranged on the slit support (1).
3. An apparatus for on-line switching of optical slits as claimed in claim 2, wherein:
the optical slit (5) is arranged on the nut (32) through a slit seat (51);
a positioning pin (52) is arranged on the slit seat (51);
the optical slit (5) is positioned by a positioning pin (52) and is pressed by a slit pressing plate (53).
4. An apparatus for on-line switching of optical slits as claimed in claim 3, wherein:
a microswitch (6) is also arranged on one side of the joint of the output shaft of the slit motor (2) and the screw rod (31); the micro switch (6) is used for feeding back zero position information of the optical slit (5) to control the slit motor (2);
and a switch touch plate (61) matched with the microswitch (6) is arranged on the nut (32).
5. An apparatus for on-line switching of optical slits as claimed in claim 3, wherein:
the single-use length of the optical slit (5) is 4 mm;
the total length of the optical slit (5) is 20 mm.
6. An apparatus for on-line switching of optical slits as claimed in any one of claims 1 to 5, wherein: also comprises an observation device (7);
the observation device (7) comprises an observation bracket (71), an electric translation stage (72) and an observation camera (73);
the observation bracket (71) is connected with the first U-shaped frame (11);
the electric translation stage (72) is arranged at the rear end of the observation bracket (71), and the translation table surface of the electric translation stage is parallel to the optical slit (5);
the observation camera (73) is arranged on the translation table top of the electric translation table (72), and the observation end of the observation camera corresponds to the optical slit (5).
7. An apparatus for on-line switching of optical slits as claimed in claim 6, wherein:
the observation bracket (71) comprises a camera protection bracket (711) and a second U-shaped bracket (712) arranged at the rear end of the camera protection bracket (711);
the front end of the camera protection frame (711) is connected with the outer side of the bottom surface of the first U-shaped frame (11);
the electric translation table (72) is arranged on the second U-shaped frame (712), and a translation guide rail (721) on the electric translation table (72) is parallel to the guide rod (4);
the observation camera (73) is arranged on the translation table top of the electric translation table (72) through a connecting frame (74).
8. An apparatus for on-line switching of optical slits as claimed in claim 7, wherein:
the viewing support (71) further comprises a mounting substrate (713) on which an exit window (713.1) is provided;
the camera protection frame (711) and the second U-shaped frame (712) are both arranged on the mounting substrate (713);
the camera protection frame (711) is positioned on the side of the exit window (713.1);
the second U-shaped frame (712) is positioned below the exit window (713.1), and one of two parallel surfaces on the second U-shaped frame (712) is positioned below the camera protection frame (711).
9. An apparatus for on-line switching of optical slits as claimed in claim 8, wherein:
the connecting frame (74) comprises a connecting rod (741) and a third U-shaped frame (742);
one end of the connecting rod (741) is connected with the translation table top, and the other end of the connecting rod is connected with the third U-shaped frame (742);
the opening of the third U-shaped frame (742) is vertical to the opening direction of the second U-shaped frame (712);
the observation camera (73) is arranged between two parallel surfaces on the third U-shaped frame (742);
one of two parallel surfaces on the third U-shaped frame (742) is provided with a waist-shaped hole (742.1);
a set screw (742.2) used for fixing the observation camera (73) is arranged in the waist-shaped hole (742.1).
10. An apparatus for on-line switching of optical slits as claimed in claim 9, wherein: the observation camera (73) comprises a CCD (731) and a micro lens (732) arranged on the CCD (731);
the micro lens (732) corresponds to the optical slit (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010280627.2A CN111442839A (en) | 2020-04-10 | 2020-04-10 | Device capable of switching optical slits on line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010280627.2A CN111442839A (en) | 2020-04-10 | 2020-04-10 | Device capable of switching optical slits on line |
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| CN111442839A true CN111442839A (en) | 2020-07-24 |
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| CN202010280627.2A Pending CN111442839A (en) | 2020-04-10 | 2020-04-10 | Device capable of switching optical slits on line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683317A (en) * | 2020-12-23 | 2021-04-20 | 浙江澍源智能技术有限公司 | Auxiliary adjustment area array, linear array detector mounting device and mounting method |
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- 2020-04-10 CN CN202010280627.2A patent/CN111442839A/en active Pending
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| CN112683317A (en) * | 2020-12-23 | 2021-04-20 | 浙江澍源智能技术有限公司 | Auxiliary adjustment area array, linear array detector mounting device and mounting method |
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