Light source and color filter switching device with memory function

Abstract

The utility model discloses a light source and color filter switching device with a memory function, and the device comprises a color filtering module which comprises a first installation seat, a first adjustment seat, a first detection unit, and a plurality of color filters, and can rotate or push and pull to switch the color filters and detect the corresponding positions; the light blocking module is used for enabling light rays of the light source module to enter or block the light rays from entering the color filtering module; the light source module comprises a driving mechanism, a rotating disc, a second detection unit and a plurality of light source assemblies, the light source assemblies can be rotationally switched, corresponding positions can be detected, each light source assembly comprises a second adjusting seat, a third adjusting seat, a dovetail guide rail and a light source, and the light source can be finely adjusted in the first direction and the second direction and is detachable; and the display module is used for displaying the brightness and the wave band of the currently used light source assembly and the wave band of the color filter. Light sources and color filters of different wavebands can be rapidly switched, rapid replacement and centering of the light sources are achieved, the service life of a to-be-tested sample is prolonged, and universality is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of microscopes, and in particular relates to a light source and color filter switching device with a memory function. Background Art

[0002] Multi-band fluorescence microscopes are developing rapidly, and only more intelligent and multifunctional fluorescence microscopes can meet the needs of more users. In the existing technology, multi-band fluorescence microscopes usually involve switching light sources and color filters. Among them, the switching of light sources is generally achieved by coupling multiple LED chips of different bands into a tube spectrum light source without wavelength offset through a composite LED light source. However, the chip coupling technology is demanding and the pass rate is low. Each additional band requires the optical structure and mechanical structure to be redesigned, resulting in high cost and poor versatility. The light source cannot be independently calibrated to align the color filter and quickly replaced to adapt to actual working scenarios. When switching the color filter, the light source is usually not turned off frequently. At this time, the excitation beam will still irradiate the sample to be tested, which will greatly shorten the life of the sample to be tested and require frequent replacement of the sample to be tested. In addition, existing multi-band fluorescence microscopes cannot directly display the status of the current light source and color filter, which is not conducive to quickly determining the working mode of the microscope to improve work efficiency and accuracy. Utility Model Content

[0003] The purpose of the present utility model is to address the above-mentioned problems and to propose a light source and color filter switching device with a memory function, which can quickly switch light sources and color filters of different bands and realize rapid replacement and centering of light sources. It has high working efficiency, is conducive to increasing the life of the sample to be tested, and has good versatility.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model proposes a light source and color filter switching device with a memory function, which is applied to a microscope and includes a display module, a main board, a color filter module, a light blocking module and a light source module, wherein:

[0006] The color filter module includes a first mounting seat, a first adjustment seat, a first detection unit, and a plurality of color filters of different wavelength bands. The first mounting seat is connected to the main body of the microscope. The color filters are arranged on the first adjustment seat. The color filters are switched by rotating or pushing and pulling the first adjustment seat relative to the first mounting seat. The first detection unit is electrically connected to the main board and is used to detect the position of the currently used color filter.

[0007] A light blocking module, including a light blocking plate, switches the light blocking plate to allow light from the light source module to pass through or block it from entering the currently used color filter and then irradiate the sample to be tested;

[0008] The light source module includes a driving mechanism, a turntable, a second detection unit and a plurality of light source assemblies of different wavelength bands. The light source assembly is electrically connected to the main board and annularly distributed on the turntable. The driving mechanism is electrically connected to the main board, and the driving mechanism is also connected to the main body of the microscope and is used to drive the turntable to rotate, thereby switching the light source assembly to align with the color filter currently in use. The light source assembly includes a second adjustment seat, a third adjustment seat, a dovetail guide rail and a light source. The second adjustment seat is connected to the turntable, and the third adjustment seat can be fine-tuned along a first direction relative to the second adjustment seat. The dovetail guide rail and the third adjustment seat are slidably matched to achieve fine-tuning along a second direction. The first direction, the second direction and the rotation axis of the turntable are orthogonal to each other. The light source is connected to the dovetail guide rail, and the third adjustment seat is also provided with a locking hole. The light source is limited by the abutment of the locking screw passing through the locking hole and the dovetail guide rail. The second detection unit is electrically connected to the main board and is used to detect the position of the light source assembly currently in use.

[0009] The display module includes a display screen electrically connected to the main board. The display screen is connected to the main body of the microscope and is used to display the brightness and wavelength of the currently used light source component and the wavelength of the currently used color filter.

[0010] Preferably, the color filter module further includes a limiting unit, the color filters are arranged side by side on the first adjustment seat, the first adjustment seat is slidably connected to the first mounting seat, and the positioning of the color filters is achieved through the limiting unit.

[0011] Preferably, the color filters are evenly distributed in an annular shape on the first adjustment seat, and the first adjustment seat is rotatably connected to the first mounting seat. The rotation of the first adjustment seat drives the color filters to switch, and the color filters and the light source assembly are switched independently or synchronously.

[0012] Preferably, the light blocking module includes a second mounting seat, a light blocking plate and a handle. The second mounting seat is connected to the main body of the microscope and is provided with a slide groove. A roller is provided in the slide groove. Two limiting holes are provided side by side on the light blocking plate. The light blocking plate slides along the slide groove driven by the handle and is limited by the cooperation between the roller and one of its limiting holes.

[0013] Preferably, the light source module also includes a fourth mounting seat, the driving mechanism includes a third mounting seat, a motor and a transmission mechanism, the transmission mechanism is a synchronous belt transmission mechanism, the third mounting seat is connected to the main body of the microscope, the motor is connected to the third mounting seat and is used to drive the transmission mechanism to drive the turntable to rotate, the motor is also electrically connected to the main board, the fourth mounting seat is connected to the third mounting seat, and the turntable is rotatably connected to the fourth mounting seat.

[0014] Preferably, the first detection unit and the second detection unit both include a code reading sensor and a plurality of magnetic coding labels. The code reading sensor of the first detection unit is connected to the first mounting seat, and the magnetic coding labels of the first detection unit correspond one-to-one with the color filter. The code reading sensor of the second detection unit is connected to the fourth mounting seat, and the magnetic coding labels of the second detection unit correspond one-to-one with the light source assembly.

[0015] Preferably, the light source module also includes an elastic positioning unit, which includes a spring and multiple grooves corresponding to the light source assembly. The spring is connected to the turntable, and the grooves are distributed in a ring shape on the fourth mounting seat. The positioning of the light source assembly is achieved through the cooperation between the spring and the groove.

[0016] Preferably, the light source is an LED light source.

[0017] Preferably, the light source and color filter switching device with memory function further comprises a button arranged on the main board or the display screen.

[0018] Preferably, the display module further includes a dimming board, and the light source assembly is electrically connected to the main board via the dimming board.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The device includes a display module, a main board, a color filter module, a light blocking module and a light source module. Both the color filter module and the light source module can realize rapid switching to different required bands, have a wide range of applications and good versatility, and the light source can be independently calibrated to ensure that the color filter used is coaxial with the center of the light source, thereby ensuring imaging quality and convenient operation. In addition, the currently used light source assembly and color filter are identified by a detection unit, and the brightness and the band of the currently used light source assembly and the band of the color filter are displayed by the display module. After replacing the color filter or light source, the band parameters displayed on the display screen can also be determined to avoid recognition errors. The light blocking module automatically blocks light when switching bands, which is beneficial to extending the life of the sample to be tested. The modular design of the color filter module and the light source assembly facilitates self-replacement by customers, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the light source and color filter switching device with memory function of the utility model;

[0022] Figure 2 This is a schematic structural diagram of the color filter module of the present utility model;

[0023] Figure 3 This is a structural diagram of the light-blocking module of the present utility model;

[0024] Figure 4 This is a structural diagram of the light source module of the utility model;

[0025] Figure 5 For this utility model Figure 4 A top view of

[0026] Figure 6 This is a structural diagram of the light source assembly of the utility model;

[0027] Figure 7 This is a circuit block diagram of the light source and color filter switching device with memory function of the utility model.

[0028] Explanation of the accompanying drawings: 1. Display module; 2. Main board; 3. Color filter module; 4. Light blocking module; 5. Light source module; 11. Display screen; 12. Dimming plate; 13. Button; 31. First mounting seat; 32. First adjustment seat; 33. Color filter; 34. First detection unit; 41. Second mounting seat; 42. Light blocking plate; 43. Handle; 44. Roller; 45. Limiting hole; 51. Third mounting seat; 52. Motor; 53. Transmission mechanism; 54. Fourth mounting seat; 55. Turntable; 56. Light source assembly; 57. Second detection unit; 58. Elastic positioning unit; 561. Second adjustment seat; 562. Third adjustment seat; 563. Dovetail guide rail; 564. Light source; 565. Locking hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the art of this application. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0031] Example 1:

[0032] like Figure 1-7 As shown, a light source and color filter switching device with memory function is applied to a microscope, comprising a display module 1, a main board 2, a color filter module 3, a light blocking module 4 and a light source module 5, wherein:

[0033] The color filter module 3 includes a first mounting seat 31, a first adjustment seat 32, a first detection unit 34, and a plurality of color filters 33 of different wavelength bands. The first mounting seat 31 is connected to the main body of the microscope. The color filters 33 are arranged on the first adjustment seat 32. The color filters 33 are switched by pushing and pulling the first adjustment seat 32 relative to the first mounting seat 31. The first detection unit 34 is electrically connected to the main board 2 and is used to detect the position of the currently used color filter 33.

[0034] The light blocking module 4 includes a light blocking plate 42, which is switched to allow the light from the light source module 5 to pass through or block the light from entering the currently used color filter 33 and then irradiate the sample to be tested;

[0035] The light source module 5 includes a driving mechanism, a turntable 55, a second detection unit 57, and a plurality of light source assemblies 56 of different wavelengths. The light source assembly 56 is electrically connected to the main board 2 and is annularly distributed on the turntable 55. The driving mechanism is electrically connected to the main board 2, and the driving mechanism is also connected to the main body of the microscope and is used to drive the turntable 55 to rotate, thereby switching the light source assembly 56 to align the currently used color filter 33. The light source assembly 56 includes a second adjustment seat 561, a third adjustment seat 562, a dovetail guide rail 563, and a light source 564. The second adjustment seat 561 is connected to the turntable 55, and the third adjustment seat is connected to the turntable 55. 562 can be fine-tuned along the first direction relative to the second adjustment seat 561. The dovetail guide rail 563 and the third adjustment seat 562 are slidably engaged to achieve fine-tuning along the second direction. The first direction, the second direction, and the rotation axis of the turntable 55 are orthogonal to each other. The light source 564 is connected to the dovetail guide rail 563. The third adjustment seat 562 is also provided with a locking hole 565. The light source 564 is limited in position by the abutment of a locking screw passing through the locking hole 565 and the dovetail guide rail 563. The second detection unit 57 is electrically connected to the main board 2 and is used to detect the position of the currently used light source assembly 56.

[0036] The display module 1 includes a display screen 11 electrically connected to the main board 2. The display screen 11 is connected to the main body of the microscope and is used to display the brightness and wavelength of the currently used light source assembly 56 and the wavelength of the currently used color filter 33.

[0037] Specifically, the light source and color filter switching device with a memory function includes a display module 1, a mainboard 2, a color filter module 3, a light blocking module 4, and a light source module 5. The display module 1 includes a display screen 11, and the mainboard 2 is electrically connected to the display screen 11, the first detection unit 34, the second detection unit 57, and the drive mechanism. The first detection unit 34 is electrically connected to the mainboard 2 and is used to detect the position of the currently used color filter 33. The second detection unit 57 is electrically connected to the mainboard 2 and is used to detect the position of the currently used light source assembly 56. By obtaining the detection position information of the first detection unit 34 and the second detection unit 57, the mainboard 2 can determine the brightness and wavelength of the currently used light source assembly 56, as well as the wavelength of the color filter 33, and digitally display them on the display screen 11.

[0038] The color filter module 3 includes a first mounting base 31, a first adjustment base 32, a first detection unit 34, and a plurality of color filters 33 of different wavelengths. The color filter 33 is a prior art structure, such as being built into a mirror base and connected to the first adjustment base 32 via the mirror base. The color filter includes a cutoff filter, a dichroic mirror, and an excitation plate. The cutoff filter and the excitation plate are perpendicular to each other, and the dichroic mirror is tilted between the cutoff filter and the excitation plate. The light emitted by the light source assembly 56 passes through the excitation plate and the dichroic mirror in sequence without being blocked by the light blocking module 4, and then is transmitted to the sample to be tested. The imaging light reflected back by the sample to be tested then passes through the dichroic mirror and the cutoff filter in sequence to reach the human eye. If there are four color filters 33, they correspond to the B (blue light), G (green light), V (violet light), and UV (ultraviolet light) bands respectively.

[0039] The light blocking module 4 includes a light blocking plate 42 , and the light from the light source module 5 is switched to pass through or block the light from entering the currently used color filter 33 and then illuminate the sample to be tested.

[0040] The light source module 5 includes a driving mechanism, a turntable 55, a second detection unit 57 and a plurality of light source assemblies 56 of different wavelength bands. The rotation axis of the turntable 55 is perpendicular to the push-pull direction of the color filter module 3. Each light source assembly 56 is arranged on the turntable 55. The light source assembly 56 includes a second adjustment seat 561, a third adjustment seat 562, a dovetail guide rail 563 and a light source 564 electrically connected to the main board 2. The second adjustment seat 561 is connected to the turntable 55. The third adjustment seat 562 can be fine-tuned along the first direction relative to the second adjustment seat 561. It can be achieved by adjusting the waist-shaped groove through the screw. The dovetail guide rail 563 slides with the third adjustment seat 562 to achieve fine-tuning along the second direction. For example, a dovetail slot is provided on the third adjustment seat 562. The dovetail guide rail 563 cooperates with the dovetail slot and is inserted into the dovetail slot. The first direction, the second direction and the rotation axis of the turntable 55 are adjusted. The three are orthogonal to each other, that is, an orthogonal coordinate system. The light source 564 is connected to the dovetail guide rail 563, and the third adjustment seat 562 is also provided with a locking hole 565. The light source 564 is limited by the abutment of the locking screw passing through the locking hole 565 and the dovetail guide rail 563. The position of the dovetail guide rail 563 can be adjusted by loosening the locking screw, thereby adjusting the position of the light source 564. The sliding connection of the dovetail guide rail 563 is conducive to the rapid replacement of the light source 564, and the centering with the color filter 33 can be achieved by fine-tuning the first direction and the second direction. When replacing, it is only necessary to open the upper cover of the microscope body and loosen the locking screw to replace the new light source 564. After reinstallation, the fine-tuning in the first direction and the second direction can be completed to correct the centering. The operation is convenient. At the same time, the light source can be independently calibrated to ensure the coaxiality of the light source center and the optical path, which is conducive to ensuring the imaging quality.

[0041] The display screen 11 is placed on the front side of the microscope body, the color filter module 3 is placed inside the microscope, ensuring that the color filter 33 switched for use is coaxial with the objective lens of the microscope and is below the objective lens. The main board 2 is placed inside the microscope body, and the light source module 5 is placed inside the microscope body at the rear side.

[0042] In one embodiment, the color filter module 3 further includes a positioning unit. The color filters 33 are arranged side by side on the first adjustment seat 32. The first adjustment seat 32 is slidably connected to the first mounting seat 31, and the positioning unit is used to position the color filters 33. A dovetail seat is provided on the side of the first adjustment seat 32, and a gripping lever is provided. The first mounting seat 31 is provided with a slide groove that cooperates with the dovetail seat. The color filters 33 are arranged side by side on the first adjustment seat 32, and the dovetail seat and the slide groove cooperate to slide and switch the color filters 33.

[0043] In one embodiment, the light-blocking module 4 includes a second mounting base 41, a light-blocking plate 42, and a handle 43. The second mounting base 41 is connected to the main body of the microscope and defines a slide groove. A roller 44 is disposed within the slide groove. Two limiting holes 45 are disposed side by side on the light-blocking plate 42. Driven by the handle 43, the light-blocking plate 42 slides along the slide groove and is limited in position by the interaction of the roller 44 with one of the limiting holes 45. The roller 44 and the two limiting holes 45 are used to switch between each other to allow light from the light source module to pass through the currently used color filter and illuminate the sample to be measured, or to block the currently used color filter.

[0044] In one embodiment, the light source module 5 further includes a fourth mounting seat 54. The drive mechanism includes a third mounting seat 51, a motor 52, and a transmission mechanism 53. The transmission mechanism 53 is a synchronous belt drive mechanism. The third mounting seat 51 is connected to the main body of the microscope. The motor 52 is connected to the third mounting seat 51 and is used to drive the transmission mechanism 53 to rotate the turntable 55. The motor 52 is also electrically connected to the mainboard 2. The fourth mounting seat 54 is connected to the third mounting seat 51, and the turntable 55 is rotationally connected to the fourth mounting seat 54. The driven pulley of the transmission mechanism 53 is disposed on the fourth mounting seat 54. The motor 52 is connected to the third mounting seat 51 and drives the driving pulley of the transmission mechanism 53. The driving pulley and the driven pulley are driven by a synchronous belt, thereby driving the turntable 55 to rotate and switch the light source assembly 56.

[0045] In one embodiment, both the first detection unit 34 and the second detection unit 57 include a code reading sensor and multiple magnetic coded labels. The code reading sensor of the first detection unit 34 is connected to the first mounting seat 31, and the magnetic coded labels of the first detection unit 34 correspond one-to-one with the color filter 33. The code reading sensor of the second detection unit 57 is connected to the fourth mounting seat 54, and the magnetic coded labels of the second detection unit 57 correspond one-to-one with the light source assembly 56. The magnetic coded labels of the first detection unit 34 are mounted on the first adjustment seat 32, corresponding one-to-one with the color filter 33. The first mounting seat 31 is provided with a corresponding code reading sensor. The third adjustment seat 562 is provided with a dovetail slot and a slot. When installed, the slot faces the axis of the turntable 55. The dovetail guide rail 563 is provided with a magnetic coded label. A fixed plate is fixed to the fourth mounting seat 54 in the hollow portion of the turntable 55. The fixed plate is provided with a code reading sensor for reading the magnetic coded labels. The fixed plate can directly read the magnetic coded labels on the dovetail guide rail 563, thereby determining the currently used light source assembly 56.

[0046] In one embodiment, the light source module 5 also includes an elastic positioning unit 58, which includes a spring and a plurality of grooves corresponding one-to-one to the light source assembly 56. The spring is connected to the turntable 55, and the grooves are distributed in an annular shape on the fourth mounting seat 54. The positioning of the light source assembly 56 is achieved by the cooperation between the spring and the groove.

[0047] In one embodiment, the light source 564 is an LED light source, or may be other light sources known in the art.

[0048] In one embodiment, the light source and color filter switching device with a memory function further includes a button 13 disposed on the main board 2 or the display screen 11. The button 13 can be a mechanical key disposed on the main board 2 or the display screen 11, such as placed on the front side of the microscope body, or a touch key on the display screen 11, for sending a signal to implement a corresponding operation, such as displaying desired information on the display screen 11.

[0049] In one embodiment, the display module 1 further includes a dimming board 12, through which the light source assembly 56 is electrically connected to the mainboard 2. The dimming board 12 is an LED brightness dimming board, connected to the light source assembly 56 and the mainboard 2, respectively. The light source of the light source assembly 56 is an LED light source. The dimming board 12 adjusts the brightness of the LED light source via a brightness adjustment potentiometer, which is displayed on the display screen 11. The LED brightness dimming board is built into the bottom side of the microscope body, and the brightness adjustment potentiometer is installed on the right side of the microscope body. By adjusting the brightness adjustment potentiometer, the dimming board 12 is adjusted, thereby adjusting the brightness of the LED light source.

[0050] Working principle:

[0051] When in use, push and pull the color filter module 3 to select the color filter 33 of the required band. The code reading sensor of the first detection unit 34 identifies the magnetic coding label corresponding to the currently used color filter 33 and transmits a signal to the main board 2. The main board 2 outputs a drive mechanism control signal according to the code of the currently used color filter 33, so that the drive mechanism drives the turntable 55 to rotate to realize the switching of the light source 564. After the second detection unit 57 identifies the currently used light source component 56, it feeds back this position information to the main board 2 to verify whether the currently used light source component 56 corresponds to the band of the color filter 33. Before switching the color filter 33, push the light blocking plate 42 to block the light path. After the switching is completed, pull the light blocking plate 42 to release the blocking state. The light blocking plate 42 can effectively block the excitation light beam and extend the life of the sample to be tested. Furthermore, the display module 1 can support manual selection of the color filter 33 band to be displayed, which can prevent the display screen 11 from displaying the wrong band when the color filter 33 is replaced. When the color filter module 3 needs to be replaced, the user can pull out the color filter module 3 and replace the entire color filter module 3 or part of the color filter 33 therein by themselves. The light source in the light source module 5 adopts a dovetail connection installation method and can be aligned. The user can replace the light source by themselves, which is convenient for maintenance and replacement of other band light sources, and can personalize the color filter module 3 and the light source module 5.

[0052] Example 2:

[0053] A light source and color filter switching device with a memory function is provided. The device is based on the first embodiment, but differs in that the color filter 33 is switched by rotating the first adjustment seat 32 relative to the first mounting seat 31 .

[0054] In one embodiment, the color filter 33 is evenly distributed in a ring shape on the first adjustment seat 32, and the first adjustment seat 32 is rotatably connected to the first mounting seat 31. The rotation of the first adjustment seat 32 drives the color filter 33 to switch, and the color filter 33 and the light source assembly 56 are switched independently or synchronously.

[0055] The color filter module 3 is a turntable structure. For example, the first adjustment seat 32 is a turntable, and the color filters 33 are evenly distributed in an annular shape on the first adjustment seat 32. The color filter module 3 and the light source module 5 are directly combined together. For example, the first adjustment seat 32 is fixedly connected to the turntable 55, so that the color filters 33 and the light source assembly 56 are relatively fixed in a one-to-one correspondence. The rotation of the turntable 55 drives the color filters 33 and the light source assembly 56 to achieve synchronous switching, which is convenient to operate. If the wavelength band needs to be changed, the corresponding connection position of the first adjustment seat 32 and the turntable 55 can be adjusted to switch to a different corresponding wavelength band. Alternatively, the first adjustment seat 32 and the turntable 55 can be independently provided, and a switching handle for switching the color filter module 3 can be additionally provided to achieve independent switching of the color filter module and the light source module.

[0056] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments merely represent specific and detailed examples of the present application and should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A light source and color filter switching device with memory function, applied to a microscope, characterized by: The light source and color filter switching device with a memory function comprises a display module (1), a main board (2), a color filter module (3), a light blocking module (4) and a light source module (5), wherein: The color filter module (3) comprises a first mounting seat (31), a first adjustment seat (32), a first detection unit (34) and a plurality of color filters (33) of different wavelength bands, wherein the first mounting seat (31) is connected to the main body of the microscope, the color filter (33) is arranged on the first adjustment seat (32), and the color filter (33) is switched by rotating or pushing or pulling the first adjustment seat (32) relative to the first mounting seat (31), and the first detection unit (34) is electrically connected to the main board (2) and is used to detect the position of the color filter (33) currently in use; The light blocking module (4) includes a light blocking plate (42), and by switching the light blocking plate (42), the light from the light source module (5) is allowed to pass through or block the light from entering the currently used color filter (33) and then irradiate the sample to be tested; The light source module (5) comprises a driving mechanism, a turntable (55), a second detection unit (57) and a plurality of light source assemblies (56) of different wavelength bands. The light source assemblies (56) are electrically connected to the main board (2) and are annularly distributed on the turntable (55). The driving mechanism is electrically connected to the main board (2) and is also connected to the main body of the microscope and is used to drive the turntable (55) to rotate, thereby switching the light source assembly (56) to align with the color filter (33) currently in use. The light source assembly (56) comprises a second adjustment seat (561), a third adjustment seat (562), a dovetail guide rail (563) and a light source (564). The second adjustment seat (561) is connected to the turntable (55). The third adjustment seat (562) is connected to the dovetail guide rail (563) and a light source (564). The third adjustment seat (562) can be fine-tuned along a first direction relative to the second adjustment seat (561); the dovetail guide rail (563) and the third adjustment seat (562) are slidably matched to achieve fine-tuning along a second direction; the first direction, the second direction and the rotation axis of the turntable (55) are orthogonal to each other; the light source (564) is connected to the dovetail guide rail (563); the third adjustment seat (562) is further provided with a locking hole (565); the light source (564) is limited by the abutment of a locking screw passing through the locking hole (565) and the dovetail guide rail (563); the second detection unit (57) is electrically connected to the main board (2) and is used to detect the position of the light source assembly (56) currently in use; The display module (1) includes a display screen (11) electrically connected to the main board (2), the display screen (11) being connected to the main body of the microscope and used to display the brightness and wavelength of the currently used light source assembly (56), as well as the wavelength of the currently used color filter (33).

2. The light source and color filter switching device with memory function according to claim 1, wherein: The color filter module (3) further comprises a limiting unit, the color filters (33) are arranged side by side on the first adjustment seat (32), the first adjustment seat (32) is slidably connected to the first mounting seat (31), and the positioning of the color filters (33) is achieved through the limiting unit.

3. The light source and color filter switching device with memory function according to claim 1, wherein: The color filter (33) is evenly distributed in a ring shape on the first adjustment seat (32), and the first adjustment seat (32) is rotatably connected to the first mounting seat (31). The rotation of the first adjustment seat (32) drives the color filter (33) to switch, and the color filter (33) and the light source assembly (56) are switched independently or synchronously.

4. The light source and color filter switching device with memory function according to claim 1, wherein: The light blocking module (4) comprises a second mounting seat (41), a light blocking plate (42) and a handle (43); the second mounting seat (41) is connected to the main body of the microscope and is provided with a slide groove; a roller (44) is provided in the slide groove; two limiting holes (45) are provided side by side on the light blocking plate (42); the light blocking plate (42) slides along the slide groove driven by the handle (43) and is limited by the cooperation between the roller (44) and one of the limiting holes (45).

5. The light source and color filter switching device with memory function according to claim 1, wherein: The light source module (5) further comprises a fourth mounting seat (54), the driving mechanism comprises a third mounting seat (51), a motor (52) and a transmission mechanism (53), the transmission mechanism (53) being a synchronous belt transmission mechanism, the third mounting seat (51) being connected to the main body of the microscope, the motor (52) being connected to the third mounting seat (51) and being used to drive the transmission mechanism (53) to drive the turntable (55) to rotate, the motor (52) being also electrically connected to the main board (2), the fourth mounting seat (54) being connected to the third mounting seat (51), and the turntable (55) being rotationally connected to the fourth mounting seat (54).

6. The light source and color filter switching device with memory function according to claim 5, wherein: The first detection unit (34) and the second detection unit (57) both include a code reading sensor and a plurality of magnetic coding labels. The code reading sensor of the first detection unit (34) is connected to the first mounting seat (31), and the magnetic coding labels of the first detection unit (34) correspond one-to-one with the color filter (33). The code reading sensor of the second detection unit (57) is connected to the fourth mounting seat (54), and the magnetic coding labels of the second detection unit (57) correspond one-to-one with the light source assembly (56).

7. The light source and color filter switching device with memory function according to claim 5, wherein: The light source module (5) further comprises an elastic positioning unit (58), the elastic positioning unit (58) comprising a spring sheet and a plurality of grooves corresponding one to one with the light source assembly (56), the spring sheet being connected to the turntable (55), the grooves being annularly distributed on the fourth mounting seat (54), and the positioning of the light source assembly (56) being achieved by the cooperation between the spring sheet and the grooves.

8. The light source and color filter switching device with memory function according to claim 1, wherein: The light source (564) is an LED light source.

9. The light source and color filter switching device with memory function according to claim 1, wherein: The light source and color filter switching device with a memory function further comprises a button (13) arranged on the main board (2) or the display screen (11).

10. The light source and color filter switching device with memory function according to claim 1, wherein: The display module (1) further comprises a dimming board (12), and the light source assembly (56) is electrically connected to the main board (2) via the dimming board (12).

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