CN218098790U - Optical system with calibration function - Google Patents

Abstract

The utility model discloses an optical system with calibration function, including bottom plate, the loading board of setting on the bottom plate and the laser emission module of setting on the loading board, its characterized in that still includes first removal subassembly, laser reflection subassembly, detection module and the second removal subassembly of setting on the loading board of setting on the bottom plate, first removal subassembly is used for driving laser emission module and moves from beginning to end on the bottom plate, the second removal subassembly is used for driving laser emission module and moves about on the loading board, laser reflection subassembly is used for reflecting the laser facula to detection module; the detection module is used for detecting the size and the position of the laser spot. The laser device can adjust the size and the position of a laser spot, effectively solves the problem that the traditional device cannot adjust a light source and can only be integrally replaced, reduces the use cost and simultaneously reduces the waste of resources.

Description

Optical system with calibration function

Technical Field

The utility model relates to a cell detection technology field especially relates to an optical system who has calibration function who is applied to blood analysis appearance and flow cytometer.

Background

To detect cell size and granularity, conventional hematology analyzers and flow cytometers typically employ sheath flow in combination with laser detection techniques. The method is characterized in that focused and shaped laser spots emitted by a laser emission module are irradiated on a sheath flow pool to form 1 laser spot, cells are enwrapped by the sheath flow and then are queued one by one to flow through the sheath flow pool made of transparent quartz glass, and after passing through the laser spots on the sheath flow pool, scattered light information received at different angles can reflect the size and granularity of the cells due to the fact that the size and granularity of different cells are different.

In practical applications, the width of the laser spot must not be larger than 1 cell size (about 20um maximum diameter of white blood cell), and too large a width may cause multiple cells to be simultaneously illuminated by the laser spot, resulting in the received scattered light not identifying information of a single cell. At the same time, the length of the laser spot should not be too large (normally about 200 um), otherwise the redundant scattered light will interfere with the judgment of the receiver. In order to detect whether the light spot meets the requirement, the traditional method is to manually adjust the position of the laser emission module through an optical system customization manufacturer, detect the light spot by adopting professional and complex optical detection equipment, enable the size of the laser light spot reaching the cell position to meet the use requirement, and finally fix the laser emission module at a relative position. After the adjustment is finished, if the laser diode of the laser emitting module is damaged in the subsequent use process, the laser diode needs to be replaced and the size of the light spot needs to be adjusted again, due to the fact that errors exist in the processing precision of the lens and the mechanical structure and the individual parameter difference of the laser diode, the sizes of the focused and shaped laser light spots reaching the cell are not consistent, the focus is not necessarily at the position of the cell, the optical system can only be replaced integrally by an optical system customization manufacturer, the use cost is increased, and meanwhile, the waste of resources is caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model aims at providing an optical system with calibration function, its adjustment that can realize laser facula size and position has effectively solved the unable adjustment light source of traditional equipment, can only the problem of whole change, reduces the waste of resource when reducing use cost.

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

an optical system with a calibration function comprises a bottom plate, a bearing plate arranged on the bottom plate, a laser emission module arranged on the bearing plate, a first moving assembly arranged on the bottom plate, a laser reflection assembly, a detection module and a second moving assembly arranged on the bearing plate, wherein the first moving assembly is used for driving the laser emission module to move back and forth on the bottom plate, the second moving assembly is used for driving the laser emission module to move left and right on the bearing plate, and the laser reflection assembly is used for reflecting laser spots to the detection module; the detection module is used for detecting the size and the position of the laser spot.

Preferably, the first moving assembly comprises a mounting plate, a driven gear, a driving gear, a supporting table, an internal gear, a planet carrier, a first screw rod and a sliding piece, the mounting plate and the supporting table are arranged on the bottom plate, the supporting table is positioned between the mounting plate and the bearing plate, the internal gear is rotatably arranged on the supporting table, the driven gear is rotatably arranged on the mounting plate and meshed with the internal gear, the driving gear is connected with a connecting rod, the connecting rod penetrates through the mounting plate and is movably arranged on the mounting plate, the planet carrier is connected to one side, away from the mounting plate, of the internal gear, a limiting pin is arranged on one side, close to the internal gear, of the planet carrier, one side, away from the internal gear, of the planet carrier is connected with the first screw rod, and the driving gear can be meshed with the driven gear or the limiting pin; the sliding part comprises a chute frame and a sliding block which is arranged in the chute frame in a sliding mode, the first screw rod is rotatably arranged on the chute frame, the sliding block is arranged on the first screw rod in a penetrating mode in a threaded mode, and the bearing plate is arranged on the sliding block.

Preferably, the gear fixing device further comprises a third moving assembly, the third moving assembly comprises a third motor, a driving gear, a connecting plate and a sliding plate, the connecting plate and the third motor are arranged on one side, away from the internal gear, of the mounting plate, the driving gear is connected to a motor shaft of the third driving motor, the sliding plate is slidably arranged on the connecting plate, and the sliding plate is provided with teeth meshed with the driving gear; the first moving assembly further comprises a first driving motor connected with the connecting rod, and the first driving motor is arranged on the sliding plate.

Preferably, the second moving assembly comprises a second lead screw, a supporting seat, a supporting plate, a mounting seat and a second driving motor, the supporting seat and the supporting plate are arranged on the bearing plate, the second lead screw is rotatably arranged between the supporting seat and the supporting plate, the mounting seat is in threaded connection with the second lead screw and is arranged between the supporting seat and the supporting plate, and the laser emitting module is arranged on the mounting seat; the second driving motor is arranged on the supporting plate, and the output end of the second driving motor is connected with the second screw rod.

Preferably, the second moving assembly further comprises a sliding rail, the sliding rail is arranged on the bearing plate and located between the supporting seat and the supporting plate, sliding grooves are correspondingly formed in the mounting seat, and the mounting seat is slidably arranged on the sliding rail through the sliding grooves.

Preferably, the laser reflection subassembly includes support frame, third lead screw, grip block and speculum, the rotatable setting of third lead screw is on the support frame, the grip block spiro union is worn to establish on the third lead screw in the support frame, the speculum sets up on the grip block, and it is located between laser emission module and the sheath flow pond, the speculum is 45 contained angles with laser emission module's laser facula, the speculum is equal to the linear distance of sheath flow pond cell position and speculum to detection module's linear distance.

Preferably, the laser reflection assembly further comprises a sliding rod, the sliding rod is arranged in the support frame in parallel with the third screw rod, and the clamping block is slidably arranged on the sliding rod in a penetrating mode.

Preferably, the laser reflection assembly further comprises a second driving motor, the second driving motor is arranged on the support frame, and the output end of the second driving motor is connected with the third screw rod.

Preferably, the detection module is located between laser emission module and the sheath flow pool, the detection module includes the pixel board, be provided with the pixel of a plurality of equidistance on the pixel board.

Compared with the prior art, the beneficial effects of the utility model reside in that: when the laser spot does not meet the requirements, the size and the position of the laser spot can be adjusted according to the requirements, so that the width of the laser spot is approximately equal to 1 cell and the focus of the laser spot is on the position of the cell; the problem that the traditional equipment cannot adjust a light source and can only be integrally replaced is effectively solved, and the waste of resources is reduced while the use cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of an optical system according to the present invention;

fig. 2 is a schematic three-dimensional structure diagram of the first moving assembly of the present invention;

FIG. 3 is a schematic view of an internal gear structure of the present invention;

fig. 4 is a schematic three-dimensional structure diagram of a second moving assembly of the present invention;

fig. 5 is a schematic three-dimensional structure diagram of the excitation and reflection assembly of the present invention;

fig. 6 is a partial enlarged view of a third moving assembly of the present invention;

FIG. 7 is a schematic diagram of a pixel plate;

the laser module comprises a bearing plate 1, a laser emitting module 2, a first moving assembly 3, a first driving motor 30, a mounting plate 31, a driven gear 32, a driving gear 33, a connecting rod 331, a supporting platform 34, an internal gear 35, a planet carrier 36, a limit pin 37, a first lead screw 38, a sliding member 39, a chute frame 391, a sliding block 392, a second lead screw 41, a supporting seat 42, a supporting plate 43, a mounting seat 44, a second driving motor 45, a sliding rail 46, a supporting frame 51, a third lead screw 52, a clamping block 53, a reflecting mirror 54, a sliding rod 55, a detection module 6, a pixel plate 61, a pixel point 62, a bottom plate 7, a sheath flow pool 8, a laser spot 9, a third moving assembly 10, a third driving motor 101, a driving gear 102, a connecting plate 103, and a sliding plate 104.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the embodiments of the present invention and make the above objects, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions of the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

It should be noted that, in the following description, the forward movement is directed to the movement close to the sheath flow cell, and the backward, leftward and rightward movements correspond to the forward movement, respectively.

Referring to fig. 1, the middle optical system of the present invention includes a bottom plate 7, a loading plate 1 disposed on the bottom plate 7, a first moving assembly 3, a laser reflection assembly and a detection module 6, and a laser emission module 2 and a second moving assembly disposed on the loading plate 1, wherein the laser emission module 2 is used for irradiating an elliptical laser spot 9; the first moving assembly 3 is used for driving the laser emitting module 2 to move back and forth on the bottom plate 7, namely, the position of the laser emitting module 2 is adjusted to be close to or far away from the sheath flow pool 8, so that the size of a laser spot 9 irradiated on the sheath flow pool 8 is adjusted; the second moving assembly is used for driving the laser emission module 2 to move left and right on the bearing plate 1, so that the position of the laser spot 9 irradiated on the sheath flow pool 8 is adjusted, and the focus of the laser spot 9 is on the sheath flow pool 8; the laser reflection assembly is used for reflecting the laser spots 9 to the detection module 6; the size of the laser spot 9 is detected at the detection module 6, and if the size of the laser spot 9 does not meet the requirement or the shape of the laser spot is lost, the laser spot is adjusted by using the first moving assembly 3 and the second moving assembly.

Specifically, referring to fig. 2 and 3, the first moving assembly 3 includes a mounting plate 31, a driven gear 32, a driving gear 33, a support platform 34, an internal gear 35, a planet carrier 36, a first screw rod 38 and a slider 39, the mounting plate 31 and the support platform 34 are mounted on the bottom plate 7, the support platform 34 is located between the mounting plate 31 and the bearing plate 1, the internal gear 35 is rotatably disposed on the support platform 34, the driven gear 32 is rotatably disposed on the mounting plate 31 and engaged with the internal gear 35, the driving gear 33 is connected with a connecting rod 331, the connecting rod 331 penetrates through the mounting plate 31 and is movably disposed on the mounting plate 31, and a distance between the driving gear 33 and the internal gear 35 can be adjusted by adjusting the connecting rod 331; a planet carrier 36 is connected to one side of the internal gear 35, which is far away from the mounting plate 31, a limit pin 37 is arranged on one side of the planet carrier 36, which is close to the internal gear 35, and one side of the planet carrier 36, which is far away from the internal gear 35, is connected with a first lead screw 38, and the length of the connecting rod 331 is adjusted to enable the driving gear 33 to be meshed with the driven gear 32 or the limit pin 37, so that the moving stroke of the laser emission module 2 is changed, namely when the driving gear 33 is meshed with the driven gear 32, the driving gear 3 rotates to drive the driven gear 32 to rotate, and the driven gear 32 drives the internal gear 35 to rotate, so as to drive the first lead screw 38 to rotate; the driving gear 33 is meshed with the limit pin 37, and the driving gear 3 rotates to drive the planet carrier 36 to rotate, so that the first screw rod 38 is driven to rotate; under the same rotating speed of the driving gear 33, the rotating speeds of the first screw rod 38 are different due to different transmission ratios of the driving gear and the driving gear, and the moving strokes of the laser emitting modules 2 are different; the sliding part 39 comprises a chute frame 391 and a sliding block 392 which can be arranged in the chute frame 391 in a sliding way, the chute frame 391 is approximately U-shaped, the first screw rod 38 is rotatably arranged on the chute frame 391, the sliding block 392 is threaded on the first screw rod 38, and the bearing plate 1 is arranged on the sliding block 392; when the driving gear 33 is engaged with the driven gear 32 or the limit pin 37, the connecting rod 331 rotating in different directions can drive the first lead screw 38 to rotate in different directions, and the driving slider 392 moves back and forth in the chute frame 391 to drive the bearing plate 1 to move back and forth, thereby realizing the adjustment of the front and back positions of the laser emitting module 2. Furthermore, the first moving assembly 3 further includes a first driving motor 30, a motor shaft of the first driving motor 30 is connected to the connecting rod 331, and the rotation of the first driving motor 30 can directly drive the rotation of the connecting rod 331. Furthermore, more than two sets of driven gears 32 can be provided, and are respectively engaged with the internal gear 35, and the driving gear 33 is located between the sets of driven gears 32.

Specifically, the optical system further comprises a third moving assembly 10, the third moving assembly 10 comprises a third driving motor 101, a driving gear 102, a connecting plate 103 and a sliding plate 104, the connecting plate 103 and the third driving motor 101 are arranged on one side of the mounting plate 31 away from the internal gear 35, the driving gear 102 is connected to a motor shaft of the third driving motor 101, the sliding plate 104 is slidably arranged on the connecting plate 103, and the sliding plate 104 is provided with teeth meshed with the driving gear 102; the first drive motor 30 is provided on the slide plate 104. Under the driving of the third motor 101, the sliding plate 104 can move back and forth on the connecting plate 103, so as to drive the first driving motor 30 thereon to move back and forth, thereby determining that the driving gear 33 is meshed with the driven gear 32 or the limit pin 37.

When the size of the presented laser spot 9 is greatly different from the size of the required laser spot, the laser emission module 2 needs to be moved by a large stroke, at the moment, the third driving motor 101 works to drive the driving gear 102 to rotate, the driving sliding plate 104 moves on the connecting plate 103 to drive the first driving motor 30 to move, so that the driving gear 33 is disengaged from the driven gear 32 and attached to the planet carrier 36, and the spacing pin 37 is engaged with the spacing pin 37, namely the spacing pin 37 is clamped between the teeth of the driving gear 33; at this time, the first driving motor 30 drives the driving gear 33 to rotate, the planet carrier 36 to rotate, the internal gear 35 to rotate rapidly on the support 34, the first lead screw 38 to rotate rapidly, the slider 392 to move in the chute frame 391, and the laser emitting module 2 to move back and forth, at this time, the stroke L1= N35 × Ph = N33 × Ph of the laser emitting module 2, where N35 is the rotation speed of the internal gear 35, N33 is the rotation speed of the driving gear 33, and Ph is the lead.

When the size of the presented laser spot 9 is very different from the size of the desired laser spot, the laser emission module 2 only needs to be moved by a small stroke, at this time, the third driving motor 101 works to drive the driving gear 102 to move, the driving sliding plate 104 moves on the first connecting plate 103 to drive the first driving motor 30 to move, so that the driving gear 33 is meshed with the driven gear 32, the first driving motor 30 drives the driving gear 33 to rotate, the driven gear 32 rotates, the driven gear 32 is meshed with the internal gear 35 to drive the internal gear 35 to slowly rotate, the first lead screw 38 slowly rotates, the driving slider 392 moves in the sliding groove frame 391 to move the laser emission module 2 back and forth, at this time, the stroke L2= Z33/Z35N 33 Ph of the laser emission module 2, wherein Z33 is the number of teeth of the driving gear 33, Z35 is the number of teeth of the internal gear 35, N33 is the rotation speed of the driving gear 33, and Ph is a lead. Since the number of teeth of the internal gear 35 is certainly larger than that of the driving gear 33, the ratio of the number of teeth of the driving gear 33 to that of the internal gear 35 is smaller than 1, and then L2 is smaller than L1.

Specifically, refer to fig. 4, the second removes the subassembly including second lead screw 41, supporting seat 42, backup pad 43 and mount pad 44, supporting seat 42 and backup pad 43 are fixed to be set up on loading board 1, second lead screw 41 is rotatable to be set up between supporting seat 42 and backup pad 43, mount pad 44 spiro union is worn to establish on second lead screw 41, rotate second lead screw 41, mount pad 44 can remove between supporting seat 42 and backup pad 43, through differential screw drive, realize the small displacement of mount pad 44, can the position of accurate adjustment mount pad 44, laser emission module 2 installs on mount pad 44, mount pad 44 drives laser emission module 2 and removes about loading board 1, thereby adjust the position that laser spot 9 shines on sheath flow cell 8, make the focus of laser spot 9 on sheath flow cell 8. Further, the second moving assembly is further provided with a second driving motor 45, the second driving motor 45 is arranged on the supporting plate 43, a motor shaft of the second driving motor 45 is connected with the second lead screw 41, and the second driving motor 45 drives the second lead screw 41 to rotate, so that the position of the laser emitting module 2 can be automatically adjusted. Furthermore, the second moving assembly further includes a sliding rail 46 disposed on the bearing plate 1 in parallel with the second lead screw 41, the sliding rail 46 is located between the supporting seat 42 and the supporting plate 43, a corresponding sliding groove (not shown) is disposed on the mounting seat 44 corresponding to the sliding rail 46, and the mounting seat 44 is slidably disposed on the sliding rail 46 through the sliding groove. The cross section of the sliding rail 46 is T-shaped or dovetail-shaped, and the mounting seat 44 is not easily detached after being arranged on the sliding rail 46. The existence of the slide rail 46 can prevent the laser emitting module 2 from rotating when moving on the second lead screw 41, so that the stability of the laser emitting module 2 during moving is improved, and the fine adjustment effect is ensured.

Specifically, referring to fig. 5, the laser reflection assembly includes a support frame 51, a third screw 52, a clamping block 53 and a reflector 54, the support frame 51 is substantially L-shaped or U-shaped, the third screw 52 is rotatably disposed on the support frame 51, the clamping block 53 is screwed on the third screw 52 penetrating through the support frame 51, the reflector 54 is disposed on the clamping block 53, and by rotating the third screw 52, the clamping block 53 can be driven to move up and down in the support frame 51, so as to drive the reflector 54 to move up and down on the light path perpendicular to the laser spot 9. The reflector 54 is located between the laser emission module 2 and the sheath flow cell 8, an included angle of 45 degrees is formed between the reflector 54 and a laser path emitted by the laser emission module 2, and a linear distance from the reflector 54 to a cell position of the sheath flow cell 8 is equal to a linear distance from the reflector 54 to the detection module 6. When the size of the laser spot 9 needs to be adjusted, the reflector 54 is adjusted to a laser light path, the laser spot 9 formed after being emitted by the laser emission module 2 is reflected to the detection module 6 through the reflector 54, through analysis of the detection module 6, if the size of the formed laser spot 9 is greatly different from that of a required spot, the third moving assembly 10 is operated, the driving gear 33 is disengaged from the driven gear 32, the planet carrier 36 is attached, the limit pin 37 is clamped between teeth of the driving gear 33, the first driving motor 30 drives the driving gear 33 to rotate, the planet carrier 36 is driven to rotate, the inner gear 35 rotates on the support table 34, the first screw rod 38 rotates, the driving slider 392 moves in the sliding groove frame 391, the laser emission module 2 moves back and forth, at this time, the stroke L = N35 Ph = N33 Ph of the laser emission module 2, the position of the laser emission module 2 is greatly displaced, and adjustment of the size of the laser spot 9 is achieved; the detection module 6 continues to analyze the size of the laser spot 9, if the difference between the formed laser spot 9 and the required spot size is small, the third moving assembly 10 is operated to enable the driving gear 33 to be meshed with the driven gear 32, the first driving motor 30 drives the driving gear 33 to rotate, the driven gear 32 rotates, the driven gear 32 is meshed with the internal gear 35 to drive the internal gear 35 to rotate, the first lead screw 38 rotates, the driving slider 392 moves in the sliding groove frame 391 to enable the laser emission module 2 to move back and forth, and at the moment, the stroke L = Z33/Z35N 33 Ph of the laser emission module 2. The detection module 6 continues to analyze the size of the laser spot 9, and selects a proper stroke as required until the laser spot 9 with a proper size is adjusted. After the adjustment, the mirror 54 is moved away from the laser beam path. Further, the laser reflection assembly further comprises a sliding rod 55, the sliding rod 55 is arranged in the support frame 51 in parallel with the third screw 52, and the clamping block 53 is slidably arranged on the sliding rod 55 in a penetrating manner. The existence of the sliding rod 55 can prevent the reflector 54 from rotating when moving on the third screw rod 52, thereby improving the stability of the reflector 54 when moving and ensuring the adjustment effect of the laser spots 9. Further, the laser reflection assembly further includes a fourth driving motor (not shown), the fourth driving motor is disposed on the supporting frame 51, and a motor shaft of the fourth driving motor is connected to the third lead screw 52. The fourth driving motor drives the third lead screw 52 to rotate, so that the position of the reflector 54 can be automatically adjusted.

Specifically, referring to fig. 1 and 2 again, the detection module 6 is located between the laser emission module 2 and the sheath flow cell 8, the detection module 6 includes a pixel plate 61, and a plurality of equidistant pixel points 62 are disposed on the pixel plate 61. After laser spot 9 reflects on pixel board 61, the size of laser spot 9 can be judged through people's naked eye, also can increase corresponding shoot and data processing unit on detection module 6, after shooing received laser spot 9, carry out data analysis to laser spot 9 photo, every pixel all has the light intensity, it is weak according to laser spot outer fringe light, the basis of laser spot internal light intensity, detection module 6 accessible light intensity contrast, after getting rid of the laser halo, analyze the pixel of highlight spot, pixel 62 intensive distribution, only need the number of the most complete pixel 62 that the highlight spot occupied in the longitudinal direction and the number of the most complete pixel 62 that the highlight spot occupied in the horizontal direction occupy (only occupy a part of pixel or expose the distance beyond the pixel can neglect), judge the size of laser spot 9. If the size of the laser spot 9 does not meet the requirement, operating the first moving assembly 3 and adjusting the size of the laser spot 9; if the shape of the laser spot 9 is incomplete, that is, the position does not meet the requirement, the second moving assembly is operated to adjust the position of the laser spot 9. The photographing and data processing units are commercially available products, and can be electrically connected with the first driving motor 30, the second driving motor 45, the third driving motor 101 and the fourth driving motor, and control the operation of the first driving motor, the second driving motor, the third driving motor and the fourth driving motor, so that the automatic adjustment of the optical system is realized.

As shown in fig. 1, each component in the middle optical system of the present invention is disposed in the bottom plate 7 according to the layout in fig. 1, when the present invention is used:

the first step, starting the laser emission module 2, and waiting for the ambient temperature and the power of the laser light source to be stable;

secondly, the fourth driving motor drives the third screw rod 52 to rotate, so as to drive the clamping block 53 to move up and down, and further drive the reflector 54 to move to a laser light path between the laser emission module 2 and the sheath flow cell 8;

thirdly, the laser spot 9 is reflected to the detection module 6 through the reflector 54, and the detection of the laser spot 9 is completed;

fourthly, if the size of the laser spot 9 does not meet the requirement, operating the first moving assembly 3 (as described above), and adjusting the distance between the laser emission module 2 and the sheath flow pool 8 so as to adjust the size of the laser spot 9;

fifthly, if the horizontal position of the laser spot 9 does not meet the requirement, the second driving motor 45 drives the second screw rod 41 to rotate, the laser emission module 2 moves left and right on the bearing plate 1, and the position of the laser emission module 2 is finely adjusted;

sixthly, repeating the third step to the fifth step until the size and the position of the laser spot 9 meet the requirements;

seventhly, the fourth driving motor drives the third screw rod 52 to rotate, so as to drive the clamping block 53 to move up and down, thereby driving the reflector 54 to move out of the optical path between the laser emission module 2 and the sheath flow cell 8, and completing the adjustment of the optical system.

Various other modifications and changes can be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims.

Claims (9)

1. An optical system with a calibration function comprises a bottom plate, a bearing plate arranged on the bottom plate, and a laser emission module arranged on the bearing plate, and is characterized by further comprising a first moving assembly, a laser reflection assembly, a detection module and a second moving assembly, wherein the first moving assembly, the laser reflection assembly, the detection module and the second moving assembly are arranged on the bearing plate, the first moving assembly is used for driving the laser emission module to move back and forth on the bottom plate, the second moving assembly is used for driving the laser emission module to move left and right on the bearing plate, and the laser reflection assembly is used for reflecting laser spots to the detection module; the detection module is used for detecting the size and the position of a laser spot.

2. The optical system with calibration function according to claim 1, wherein the first moving assembly comprises a mounting plate, a driven gear, a driving gear, a supporting table, an internal gear, a planet carrier, a first screw rod and a sliding member, the mounting plate and the supporting table are arranged on the bottom plate, the supporting table is positioned between the mounting plate and the bearing plate, the internal gear is rotatably arranged on the supporting table, the driven gear is rotatably arranged on the mounting plate and meshed with the internal gear, the driving gear is connected with a connecting rod, the connecting rod penetrates through the mounting plate and is movably arranged on the mounting plate, the planet carrier is connected to one side of the internal gear, which is far away from the mounting plate, one side of the planet carrier, which is close to the internal gear, is provided with a limit pin, one side of the planet carrier, which is far away from the internal gear, is connected with the first screw rod, and the driving gear can be meshed with the driven gear or the limit pin; the sliding part comprises a sliding groove frame and a sliding block which is arranged in the sliding groove frame in a sliding mode, the first screw rod is rotatably arranged on the sliding groove frame, the sliding block is arranged on the first screw rod in a penetrating mode in a threaded mode, and the bearing plate is arranged on the sliding block.

3. The optical system with calibration function of claim 2, further comprising a third moving assembly, the third moving assembly comprising a third motor, a driving gear, a connecting plate and a sliding plate, the connecting plate and the third motor being disposed on a side of the mounting plate away from the internal gear, the driving gear being connected to a motor shaft of the third driving motor, the sliding plate being slidably disposed on the connecting plate, the sliding plate being provided with teeth that engage with the driving gear; the first moving assembly further comprises a first driving motor connected with the connecting rod, and the first driving motor is arranged on the sliding plate.

4. The optical system with calibration function of claim 1, wherein the second moving assembly comprises a second lead screw, a supporting seat, a supporting plate, a mounting seat and a second driving motor, the supporting seat and the supporting plate are disposed on the bearing plate, the second lead screw is rotatably disposed between the supporting seat and the supporting plate, the mounting seat is threaded on the second lead screw and is located between the supporting seat and the supporting plate, and the laser emitting module is disposed on the mounting seat; the second driving motor is arranged on the supporting plate, and the output end of the second driving motor is connected with the second screw rod.

5. The optical system according to claim 4, wherein the second moving assembly further comprises a slide rail disposed on the carrier plate between the supporting base and the supporting plate, the mounting base is correspondingly provided with a slide groove, and the mounting base is slidably disposed on the slide rail through the slide groove.

6. The optical system with calibration function of claim 1, wherein the laser reflection assembly comprises a support frame, a third screw rod, a clamping block and a reflector, the third screw rod is rotatably disposed on the support frame, the clamping block is screwed on the third screw rod disposed in the support frame, the reflector is disposed on the clamping block and located between the laser emission module and the sheath flow cell, the reflector and the laser spot of the laser emission module form an included angle of 45 °, and the linear distance from the reflector to the cell position of the sheath flow cell is equal to the linear distance from the reflector to the detection module.

7. The optical system with calibration function of claim 6, wherein the laser reflection assembly further comprises a sliding rod, the sliding rod is disposed in the supporting frame parallel to the third lead screw, and the clamping block is slidably disposed through the sliding rod.

8. The optical system with calibration function of claim 6, wherein the laser reflection assembly further comprises a second driving motor, the second driving motor is disposed on the supporting frame, and the output end of the second driving motor is connected to the third screw rod.

9. The optical system with calibration function of claim 1, wherein the detection module is located between the laser emission module and the sheath flow cell, the detection module comprising a pixel board on which a plurality of equidistant pixels are disposed.

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