Inverted fluorescent illuminator

Abstract

The utility model discloses an inverted fluorescent illuminator, and relates to the technical field of microscopes. The top side of the shell is provided with a detection port, the bottom side of the shell is provided with an observation port, the sliding block is arranged on the detection port and the observation port in a sliding mode, and a plurality of detection channels are fixedly installed on the sliding block. The sliding block is pushed to slide through the push rod, so that the guide column is driven to move in the space between the two movable plates, when the guide column abuts against the inclined face of the triangular clamping block, under the action of external force, the movable plates can be forced to get rid of the magnetic piece temporarily and rotate reversely till the guide column passes through the triangular clamping block, and at the moment, pushing of the push rod can be stopped; the movable plate can rotate forwards under the action of the magnetic piece, the guide column can be fixed through the two triangular clamping blocks, and the fixation can be released by pushing the push rod with force, the magnetic force of the magnetic piece serves as a power source for fixing the sliding block, and compared with the prior art, the sliding block fixing device has the advantages of being long in service life and not prone to damage. And when the detection channel is switched at high frequency, the fixing effect is good.

Description

Technical Field

[0001] This utility model relates to the field of microscope technology, specifically to an inverted fluorescent illuminator. Background Technology

[0002] An inverted fluorescence microscope is a specially designed microscope in which the illuminator and objective lens are located below the sample, while only the lens or low-power objective lens for collecting light is located above the sample. In this structure, the inverted fluorescence illuminator is one of the key components, mainly used to excite the fluorescence signal of the sample. The inverted fluorescence illuminator is a multi-channel design, with each channel equipped with a different light source (such as ultraviolet lamp, blue lamp, green lamp, etc.), as well as a condenser lens group, excitation filter and beam splitter adapted to the light source. This can meet the detection needs of multicolor fluorescent labeled samples, thereby improving experimental efficiency and imaging flexibility.

[0003] Traditional lighting fixtures typically have multiple channels mounted on a sliding plate. Channels are switched manually by pushing a lever, with springs and slots assisting in positioning. However, in actual use, frequent channel switching leads to repeated elastic deformation, causing fatigue in the spring metal and weakening its elasticity. This results in a failure to tightly press against the slots, reducing the stability of the sliding plate. Furthermore, the feedback provided after the springs and slots are aligned is reduced, making it easy for users to misjudge whether they have reached the designated position, making it inconvenient to use. To address this issue, this invention proposes an inverted fluorescent lighting fixture. Utility Model Content

[0004] The purpose of this invention is to address the technical problem that traditional lighting fixtures typically have multiple channels mounted on a sliding plate, requiring manual pushing of a push rod to switch channels and using springs and slots for positioning. However, in actual use, frequent channel switching leads to repeated elastic deformation, causing fatigue of the spring metal and weakening of its elasticity. This results in the springs failing to tightly press against the slots, reducing the stability of the sliding plate. Furthermore, the reduced feedback after the springs and slots are aligned makes it easy for users to misjudge whether they have reached the designated position, making the lighting fixture inconvenient to use. This invention provides an inverted fluorescent lighting fixture.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] An inverted fluorescent illuminator includes a housing with a detection port on its top side and an observation port on its bottom side, a slider slidably disposed between the detection port and the observation port, and multiple detection channels fixedly mounted on the slider, and further includes:

[0007] The push rod slides through the housing and is connected to one side of the slider;

[0008] A connecting plate is connected to one side of the slider. A guide post is vertically connected to the connecting plate. Two movable plates are arranged parallel to each other on both sides of the guide post. At least one movable plate is hinged to the end of the housing and has multiple triangular blocks on it. The triangular blocks are arranged in pairs and correspond to multiple detection channels. The inclined surfaces of the guide post and the triangular blocks abut and overlap.

[0009] Magnetic components are used to drive the ends of the two movable plates closer together.

[0010] Furthermore, both ends of the movable plates are hinged to the housing, and triangular locking blocks are provided on opposite sides of the movable plates.

[0011] Furthermore, the triangular blocks on both sides are misaligned vertically.

[0012] Furthermore, a roller is rotatably mounted on the outer side of the guide post, and the roller rolls into contact with the inclined surface of the triangular block.

[0013] Furthermore, the drum has an annular cavity inside, and a support plate is provided in the annular cavity inside it.

[0014] Furthermore, the magnetic component includes a mounting groove at the end of the movable plate, and each mounting groove contains a magnet, with the two magnets attracting each other.

[0015] Furthermore, each of the two movable plates is provided with a limiting block at its end, and the blocks are located on opposite sides of the two movable plates respectively.

[0016] Furthermore, the limiting block is magnetically repelled by the magnet.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention uses a push rod to push a slider, thereby driving a guide post to move within the gap between two movable plates. When the guide post contacts the inclined surface of the triangular locking block, under the action of external force, the movable plate can be forced to temporarily break free from the magnetic component and reverse until the guide post passes the triangular locking block. At this point, pushing the push rod can be stopped, and the movable plate can rotate forward under the action of the magnetic component. The guide post can be fixed by the two triangular locking blocks, and the above-mentioned fixation can be released by pushing the push rod forcefully. This invention uses the magnetic force of the magnetic component as the power source for fixing the slider. Compared with the prior art, it has the advantages of long service life and not being easily damaged. It also has a good fixing effect when switching detection channels at high frequency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a utility model Figure 1 A bottom view;

[0021] Figure 3 This is a utility model Figure 1 A partial structural sectional view;

[0022] Figure 4 This is a utility model Figure 3 A cross-sectional view of the detection channel in the middle;

[0023] Figure 5 This is a utility model Figure 3 A structural diagram from another direction;

[0024] Figure 6 This is a utility model Figure 5 Enlarged view of point A;

[0025] Figure 7 This is a schematic diagram of the bottom structure of the slider of this utility model;

[0026] Figure 8 This is a utility model Figure 7 Enlarged view of point B;

[0027] Reference numerals: 1. Housing; 2. Detection port; 3. Observation port; 4. Slider; 5. Detection channel; 501. Vertical section; 502. Horizontal section; 6. Push rod; 7. Connecting plate; 8. Guide post; 9. Movable plate; 10. Triangular block; 11. Magnetic component; 1101. Mounting groove; 1102. Magnet; 12. Roller; 13. Annular cavity; 14. Support plate; 15. Inclined surface; 16. Limiting block; 17. Light source; 18. Condenser lens group; 19. Excitation filter; 20. Emission filter; 21. Beam splitter; 22. Switch; 23. Conductive block; 24. Conductive spring; 25. Trapezoidal block; 26. Roller. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0029] like Figures 1-8 As shown, an inverted fluorescent illuminator according to one embodiment of this utility model includes a housing 1, with a detection port 2 on its top side and an observation port 3 on its bottom side. A slider 4 is slidably disposed between the detection port 2 and the observation port 3. Multiple detection channels 5 are fixedly installed on the slider 4. In this utility model, the number of detection channels 5 is four, such as... Figure 4As shown, the detection channel 5 is T-shaped, with a vertical section 501 and a horizontal section 502 that are interconnected. The observation port 3 and the detection port 2 are located at the two ends of the vertical section 501, respectively. In the horizontal section 502, a light source 17, a condenser lens group 18 and an excitation filter 19 are arranged in sequence facing the vertical section 501. The light sources 17 in the four detection channels 5 are ultraviolet lamp, blue lamp, green lamp and red lamp, respectively, and the condenser lens group 18 corresponds to the light source 17. An emission filter 20 is provided at one end of the vertical section 501 facing the observation port 3. A beam splitter 21 "dichroic mirror" is inclined in the vertical section 501 to separate the excitation filter 19 and the emission filter 20.

[0030] The principle here is as follows: Light emitted from light source 17 passes through condenser lens group 18 and becomes a parallel beam. The parallel beam passes through excitation filter 19 (e.g., BP540 / 20, which allows light with a wavelength of 540±20nm to pass through). The parallel beam after the first filtering is completely reflected downward by the coating surface of beam splitter 21 (e.g., DM565, which allows light with a wavelength greater than 565nm to be projected, and light with a wavelength less than 565nm to be reflected), and shines on the sample surface, exciting the transition. The reflected light returns to beam splitter 21, in which light with a wavelength less than 565nm is projected and passes through, and then passes through emission filter 20 (e.g., LP590, which allows light with a wavelength greater than 590nm to pass through), and the desired fluorescence signal is obtained and enters the observation system.

[0031] The four detection channels 5 can be switched by sliding the slider 4, thereby outputting different detection light sources 17;

[0032] A switch 22 for controlling the light source 17 is installed at the end of the horizontal section 502. The switch 22 has a conductive block 23 and a conductive spring 24. The housing 1 is connected to a trapezoidal block 25. A roller 26 is installed at the end of the elastic sheet. When switching the detection channel 5, the corresponding switch 22 will move to the trapezoidal block 25. At this time, the roller 26 can slide on the inclined surface of the trapezoidal block 25 and force the elastic sheet to abut against the conductive block 23 so that the light source 17 can be energized after switching the detection channel 5.

[0033] The distinguishing technical features of this utility model also include:

[0034] Push rod 6 slides through housing 1 and is connected to one side of slider 4. Push rod 6 can push slider 4 to slide inside housing 1 to switch the four detection channels 5.

[0035] A connecting plate 7 is connected to one side of the slider 4. A guide post 8 is vertically connected to the connecting plate 7. The axis of the guide post 8 is perpendicular to the sliding direction of the slider 4. Two movable plates 9 are arranged parallel to each other on both sides of the guide post 8. The length direction of the movable plates 9 is consistent with the sliding direction of the slider 4. When the slider 4 slides, the guide post 8 can move within the gap between the two movable plates 9. At least one end of the movable plate 9 is hinged to the housing 1, and multiple triangular blocks 10 are constructed on it. The triangular blocks 10 are arranged in pairs and correspond to multiple detection channels 5. The four sets of triangular blocks 10 are spaced apart. The inclined surface 15 of the guide post 8 and the triangular blocks 10 abut and overlap.

[0036] The magnetic component 11 is used to drive the ends of the two movable plates 9 to approach each other. Under the action of the magnetic component 11, the movable plates 9 can be driven to rotate forward along their own hinge points, so that the triangular latch 10 on them moves to the trajectory of the guide post 8. When the slider 4 switches the detection channel 5, the guide post 8 moves within the gap between the two movable plates 9 and abuts against the inclined surface 15 of one of the triangular latches 10, forcing the movable plates 9 to reverse until the guide post 8 passes the triangular latch 10. Then, the magnetic component 11 will drive the movable plates 9 to rotate forward again. At this time, the guide post 8 is located between the two triangular latches 10 and moves to the middle part of the two triangular latches 10 under the abutment of the inclined surfaces 15 on the adjacent sides of the two. Thus, the guide post 8 can be fixed by a single set of triangular latches 10, thereby constraining the movement of the slider 4. When the push rod 6 is pushed, when the abutment force of the guide post 8 against the inclined surface 15 of the triangular latch 10 is greater than the driving force provided by the magnetic component 11 to the end of the movable plate 9, the movable plates 9 can be driven to rotate, so that the guide post 8 can continue to move.

[0037] This invention uses a push rod 6 to push a slider 4 to slide, thereby driving a guide post 8 to move within the gap between two movable plates 9. When the guide post 8 contacts the inclined surface 15 of the triangular locking block 10, under the action of external force, the movable plate 9 can be forced to temporarily break free from the magnetic component 11 and reverse until the guide post 8 passes the triangular locking block 10. At this time, the push rod 6 can be stopped, and the movable plate 9 can rotate forward under the action of the magnetic component 11. The guide post 8 can be fixed by the two triangular locking blocks 10. Pushing the push rod 6 forcefully can release the above-mentioned fixation. This invention uses the magnetic force of the magnetic component 11 as the power source for fixing the slider 4. Compared with the prior art, it has the advantages of long service life and not being easily damaged. It also has a good fixing effect when switching detection channels 5 at high frequency.

[0038] like Figure 5 and Figure 7As shown, a further technical solution for the movable plates 9 of this utility model is disclosed. The ends of both movable plates 9 are hinged to the housing 1, and triangular blocks 10 are provided on opposite sides of each movable plate 9. When the guide post 8 moves, it will simultaneously abut against the inclined surfaces 15 of the triangular blocks 10 on opposite sides of the two movable plates 9, forcing the two movable plates 9 to rotate along the hinge point. At the same time, the guide post 8 can also constrain the movement of the two movable plates 9 to a certain extent, so that they do not get too close.

[0039] During the movement of the guide post 8, the travel distance of a single movable plate 9 can be reduced, making it easier for the guide post 8 to drive its movement. At the same time, after switching the detection channel 5, the guide post 8 is located between the four triangular blocks 10, resulting in good fixation.

[0040] like Figure 7 and Figure 8 As shown, the present invention discloses a further technical solution for the triangular locking block 10. The two triangular locking blocks 10 on both sides are staggered vertically. This design allows the tips of the triangular locking blocks 10 on different movable plates 9 to intersect each other when the guide post 8 is fixed by the four triangular locking blocks 10, thereby improving the fixing effect on the guide post 8.

[0041] like Figure 4 , Figure 7 and Figure 8 As shown, the present invention discloses a further technical solution for the guide post 8. A roller 12 is rotatably mounted on the outer side of the guide post 8. The roller 12 rolls and overlaps with the inclined surface 15 of the triangular block 10. This design transforms the sliding friction between the guide post 8 and the inclined surface of the triangular block 10 into rolling friction between the roller 12 and the inclined surface of the triangular block 10, thereby reducing frictional resistance. This facilitates the passage of the guide post 8 while also preventing wear between the two.

[0042] like Figure 8 As shown, the present invention discloses a further technical solution for the roller 12. The roller 12 has an annular cavity 13 inside, and a support plate 14 is provided in the annular cavity inside. The support plate 14 can improve the structural strength of the annular cavity 13, making it less prone to damage. It should be specifically noted that when the guide post 8 passes the tip of the triangular block 10, the movable plate 9 will quickly reset under the action of the magnetic component 11. At this time, the triangular block 10 will collide with the roller 12. By adopting the design of the annular cavity 13, the collision feedback between the triangular block 10 and the roller 12 can be improved, making it easier for the user to judge whether the designated position has been reached.

[0043] like Figures 5-7As shown, the specific structure of the magnetic component 11 of this utility model is disclosed. The magnetic component 11 includes a mounting groove 1101 opened at the end of the movable plate 9. Magnets 1102 are installed in each mounting groove 1101, and the two magnets 1102 are magnetically attracted to each other. Under the action of the two magnets 1102, the ends of the two movable plates 9 can be driven to move closer to each other, and as shown... Figure 7 As shown, after the guide post 8 is fixed, the two magnets 1102 are in a close-to-each-other state rather than adsorbing each other. On the one hand, the guide post 8 can be fixed by the clamping force formed by the four triangular blocks 10. On the other hand, when the push rod 6 is pushed, the resistance of the guide post 8 driving the two movable plates 9 to separate is small, which makes it easy to use.

[0044] like Figures 5-7 As shown, the present invention discloses a further technical solution for constraining the movement of the movable plate 9. Each of the two movable plates 9 has a limiting block 16 at its end, which is located on opposite sides of the two movable plates 9 respectively. This design can constrain the movement angle of the two movable plates 9. That is, when the push rod 6 drives the slider 4 to slide quickly, when the two movable plates 9 separate under the impact of the guide post 8, the two magnets 1102 will not completely separate under the influence of the impact force, so as to facilitate reset.

[0045] like Figures 5-7 As shown, the present invention discloses a further technical solution for the limiting block 16. The limiting block 16 is magnetically repelled by the magnet 1102. The limiting block 16 is a neodymium magnet. This design can, on the one hand, buffer the collision between the limiting block 16 and the magnet 1102 through the repulsive force, so that the two are not easily damaged. On the other hand, after the magnet 1102 moves, it can be driven to quickly reset under the action of the repulsive force.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An inverted fluorescent illuminator, comprising a housing (1), a detection port (2) on its top side, an observation port (3) on its bottom side, a slider (4) slidably disposed between the detection port (2) and the observation port (3), and a plurality of detection channels (5) fixedly mounted on the slider (4), characterized in that, Also includes: The push rod (6) slides through the housing (1) and is connected to one side of the slider (4); A connecting plate (7) is connected to one side of the slider (4). A guide post (8) is vertically connected to the connecting plate (7). Two movable plates (9) are arranged parallel to each other on both sides of the guide post (8). At least one movable plate (9) is hinged to the end of the housing (1) and has multiple triangular blocks (10) on it. The triangular blocks (10) are arranged in pairs and correspond to multiple detection channels (5). The inclined surfaces (15) of the guide post (8) and the triangular blocks (10) abut and overlap. A magnetic component (11) is used to drive the ends of the two movable plates (9) to come close together.

2. The inverted fluorescent illuminator according to claim 1, characterized in that, Both of the movable plates (9) are hinged to the housing (1) at their ends, and triangular blocks (10) are provided on opposite sides of the movable plates (9).

3. The inverted fluorescent illuminator according to claim 2, characterized in that, The triangular blocks (10) on both sides are misaligned vertically.

4. The inverted fluorescent illuminator according to claim 3, characterized in that, A roller (12) is rotatably mounted on the outside of the guide post (8), and the roller (12) rolls and overlaps with the inclined surface (15) of the triangular block (10).

5. The inverted fluorescent illuminator according to claim 4, characterized in that, The roller (12) has an annular cavity (13) inside, and a support plate (14) is provided in the annular cavity inside.

6. The inverted fluorescent illuminator according to claim 5, characterized in that, The magnetic component (11) includes a mounting groove (1101) opened at the end of the movable plate (9), and a magnet (1102) is installed in each mounting groove (1101), and the two magnets (1102) are attracted to each other magnetically.

7. The inverted fluorescent illuminator according to claim 6, characterized in that, Each of the two movable plates (9) is provided with a limiting block (16) at its end, and the blocks are located on opposite sides of the two movable plates (9).

8. The inverted fluorescent illuminator according to claim 7, characterized in that, The limiting block (16) is magnetically repelled by the magnet (1102).

Images