Positive fluorescent illuminator

Abstract

The utility model discloses an upright fluorescent illuminator, and relates to the technical field of microscopes. The observation port and the detection port are formed in the opposite sides of the shell, the sliding block is installed in the shell in a sliding mode, three channels are linearly distributed on the sliding block, the observation port is communicated with the detection port through the channels, and light-emitting assemblies are arranged in the channels. According to the utility model, the two sliding plates are driven by the pushing part to slide, so that when the sliding plates move to a first position, a second position and a third position, the sliding plates can be fixed in the middle or at two ends of a sliding track through repulsive force generated by the second magnetic block and the third magnetic block on the first magnetic block, and thus switching of a plurality of channels between the observation port and the detection port is realized; in conclusion, the magnetic non-contact positioning design is adopted, compared with the prior art, when the sliding block is driven to slide so as to switch the channels, friction abrasion does not exist, the service life of the device is long, damage is not prone to occurring when the channels are switched at high frequency, and practicability is achieved.

Description

Technical Field

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

[0002] An upright fluorescence illuminator is one of the core components of an upright fluorescence microscope. It is used to excite fluorescent substances in a sample and observe the fluorescence signals emitted by them. Existing upright fluorescence illuminators are often multi-channel designs, with each channel equipped with different light sources (such as ultraviolet lamps, blue lamps, and green lamps), as well as condenser lenses, excitation filters, and spectrometers that are compatible with the light sources. This can meet the detection needs of multicolor fluorescent labeled samples, thereby improving experimental efficiency and imaging flexibility.

[0003] The switching of multiple channels inside a lighting fixture is generally achieved through two methods: manual switching and motor switching. In lighting fixtures with manual channel switching, the three channels are often mounted on a slider. The channel is switched by manually pushing a push rod, and positioning is assisted by a spring and a slot. However, in actual use, the sliding friction generated by the spring may wear down the contact surface, resulting in a decrease in positioning effect. Furthermore, during high-frequency channel switching, long-term repeated elastic deformation can lead to metal fatigue of the spring, resulting in a weakening of the spring's elasticity and affecting the channel's fixing effect. In order to reasonably improve this problem, this utility model proposes an upright fluorescent lighting fixture. Utility Model Content

[0004] The purpose of this invention is to address the technical problem of manually switching channels in lighting fixtures, where the three internal channels are often mounted on a slider. The channels are switched manually by pushing a push rod, and positioning is aided by a spring and a slot. However, in actual use, the sliding friction generated by the spring may wear down the contact surface, leading to a decrease in positioning effectiveness. Furthermore, during high-frequency channel switching, long-term repeated elastic deformation can cause metal fatigue of the spring, weakening its elasticity and affecting the channel's fixation effect. This invention provides an upright fluorescent lighting fixture.

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

[0006] An upright fluorescent illuminator, including a housing, and an observation port and a detection port located on its opposite side, further includes:

[0007] The slider is slidably installed inside the housing. Three channels are linearly distributed on the slider. The observation port is connected to the detection port through the channels. The channels are equipped with light-emitting components for outputting detection light sources.

[0008] Two sliding plates are connected at their ends and slide against the inner walls of the two sides of the housing. A pushing part is provided on the outer side of the housing to push the sliding plates to slide.

[0009] Two first magnetic blocks are respectively installed at both ends of the slider. A second magnetic block is installed in the middle of the slide plate. A third magnetic block is installed on the slide plate. The two third magnetic blocks are staggered and respectively located on both sides of the two second magnetic blocks. The second and third magnetic blocks are like magnetic blocks and repel each other.

[0010] Furthermore, a fourth magnetic block is installed on the slide plate and is located on the side of the second magnetic block away from the third magnetic block, and the fourth magnetic block and the first magnetic block are attracted to each other by opposite polarities.

[0011] Furthermore, the pushing part includes a connecting block constructed on the slide plate, a sliding groove is provided on the outer side of the housing, a push plate is connected to the end of the connecting block and covers the side of the sliding groove away from the slide plate, and a positioning member is provided on the outer side of the housing for fixing the push plate.

[0012] Furthermore, the positioning element includes a fifth magnet, which is linearly distributed on the outside of the housing, and the push plate is provided with a plurality of sixth magnets, which are attracted to the fifth magnets by opposite poles.

[0013] Furthermore, a rack is mounted on the slider, and a gear that meshes with it is rotatably mounted inside the housing.

[0014] Furthermore, the gear is evenly divided into four regions circumferentially around the axis of rotation, with through holes in three of the regions.

[0015] Furthermore, the channel is T-shaped, with interconnected vertical and horizontal sections. The observation port and the detection port are located at the two ends of the vertical section, respectively. The light-emitting component includes a light source, a condenser lens group, and a first filter arranged sequentially from the end of the horizontal section toward the vertical section. A second filter is provided at the end of the vertical section facing the observation port. A beam splitter is inclinedly provided in the vertical section to separate the first filter and the second filter.

[0016] Furthermore, the horizontal section end is provided with a switching mechanism and is electrically connected to the light source. The switching mechanism has a first contact and a second contact. The first contact is connected to a conductive block, and the second contact is connected to an elastic sheet and abuts and overlaps with the conductive block. The housing is connected to a trapezoidal block, and a roller is installed at the end of the elastic sheet. The roller rolls and overlaps with the trapezoidal block.

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

[0018] This invention drives two sliding plates to slide through a pusher. When the sliding plates move to the first, second, and third positions, the repulsive force generated by the second and third magnetic blocks on the first magnetic block fixes the sliding plates in the middle or at both ends of their sliding trajectory. This allows for the switching of multiple channels between the observation port and the detection port. In summary, this invention adopts a magnetic non-contact positioning design. Compared with the prior art, there is no friction or wear when driving the slider to switch channels, the device has a long service life, and it is not easily damaged when switching channels at high frequency, making it practical. 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 Internal structure diagram;

[0021] Figure 3 This is a utility model Figure 2 A schematic diagram of a partial structure;

[0022] Figure 4 This is a utility model Figure 3 A partial sectional side view of the structure;

[0023] Figure 5 This is a sectional bottom view of the structure of the skateboard of this utility model in the first position;

[0024] Figure 6 This is a sectional bottom view of the structure of the skateboard in the second position of this utility model;

[0025] Figure 7 This is a utility model Figure 6 Enlarged view of point A;

[0026] Figure 8 This is a sectional bottom view of the structure of the skateboard in the third position of this utility model;

[0027] Figure 9 This is a cross-sectional view of the shell structure of this utility model;

[0028] Figure 10 This is a utility model Figure 2 Bottom structure bottom view;

[0029] Reference numerals: 1. Housing; 2. Observation port; 3. Detection port; 4. Slider; 5. Channel; 501. Vertical section; 502. Horizontal section; 6. Light-emitting component; 601. Light source; 602. Condenser lens group; 603. First filter; 604. Second filter; 605. Beam splitter; 7. Slide plate; 8. Pushing part; 801. Connecting block; 802. Slide groove; 803. Push plate; 804. Positioning component; 8041. Fifth magnet; 8042. Sixth magnet; 9. First magnetic block; 10. Second magnetic block; 11. Third magnetic block; 12. Fourth magnetic block; 13. Rack; 14. Gear; 15. Area; 16. Through hole; 17. Switching mechanism; 1701. Trapezoidal block; 1702. Roller; 1703. Conductive block; 1704. Elastic sheet. Detailed Implementation

[0030] 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.

[0031] like Figures 1-10 As shown, an embodiment of the present invention provides an upright fluorescent illuminator, which includes a housing 1, and an observation port 2 and a detection port 3 disposed on opposite sides thereof. The observation port 2 is connected to the microscope eyepiece, and the detection port 3 is connected to the microscope objective.

[0032] The distinguishing technical features of this utility model also include: a slider 4, which is slidably installed inside the housing 1. Three channels 5 are linearly distributed on the slider 4. The observation port 2 is connected to the detection port 3 through the channel 5. The sliding direction of the slider 4 is perpendicular to the conduction direction of the observation port 2 and the detection port 3. By driving the slider 4 to slide, the observation port 2 and the detection port 3 can be connected through the three channels 5 respectively. A light-emitting component 6 is provided in the channel 5 for outputting a detection light source 601. The three channels 5 can be switched by sliding the slider 4 to output different detection light sources 601.

[0033] Two sliding plates 7 are connected at their ends. The movement of the two sliding plates 7 is synchronous, and they slide and engage with the inner walls on both sides of the housing 1 respectively. The two sliding plates 7 are located at the two sliding ends of the slider 4 respectively, and the sliding direction of the sliding plates 7 is perpendicular to the sliding direction of the slider 4. A pushing part 8 is provided on the outside of the housing 1 to push the sliding plates 7 to slide.

[0034] Two first magnetic blocks 9 are respectively installed at both ends of the slider 4. Specifically, "both ends" refers to the two sliding ends of the slider 4. A second magnetic block 10 is installed in the middle of the slide plate 7, and a third magnetic block 11 is installed on the slide plate 7. The two third magnetic blocks 11 are staggered and positioned on either side of the two second magnetic blocks 10. Figures 6-7As shown, the two third magnetic blocks 11 are located to the left and right of the two second magnetic blocks 10 respectively, and the second magnetic blocks 10 and the third magnetic blocks 11 are repulsive to the first magnetic block 9. All of the above magnetic blocks are neodymium magnets.

[0035] The pusher 8 can drive the two slide plates 7 to slide, allowing them to move to the first position, the second position, and the third position;

[0036] When both skateboards 7 are in the first position, as Figures 6-7 As shown, the two second magnetic blocks 10 are on the sliding track of the slider 4 and are close to the two first magnetic blocks 9 respectively. At this time, the two second magnetic blocks 10 will repel the two first magnetic blocks 9. Under the action of repulsion, the slider 4 will be driven to move towards the middle of the housing 1. When the slider 4 stops sliding, the distance between it and the two second magnetic blocks 10 is the same. At this time, the repulsion force generated by the two second magnetic blocks 10 on the two first magnetic blocks 9 cancels each other out, and the slider 4 will stay in the middle of the housing 1. At this time, the observation port 2 and the detection port 3 can be connected through the channel 5 located in the middle.

[0037] When the skateboard 7 is in the first position, it can slide in one direction using the pushing part 8. At this time, as Figure 5 As shown, the second magnetic block 10 will detach from the sliding track of the slider 4, and the third magnetic block 11 on one of the slide plates 7 will move onto the sliding track of the slider 4. Due to the asymmetrical design of the third magnetic block 11, the slider 4 can move from the middle of the housing 1 toward the inner wall of one side of the housing 1 under the repulsion of the third magnetic block 11. When the slider 4 slides to one end of its sliding track, the slider 4 cannot continue to move. The observation port 2 and the detection port 3 can be connected through the channel 5 on one side.

[0038] When the skateboard 7 is in the first position, it can slide in another direction via the pushing part 8. At this time, as Figure 8 As shown, the third magnetic block 11 on the other slide 7 will move to the sliding track of the slider 4. Under the action of repulsion, the slider 4 can move from the middle of the housing 1 toward the inner wall of the other side of the housing 1. When the slider 4 slides to the other end of its sliding track, the slider 4 can no longer move. The observation port 2 and the detection port 3 can be connected through the channel 5 on the other side.

[0039] This invention drives two sliding plates 7 to slide through a pushing unit 8. When the sliding plates 7 move to the first, second, and third positions, the repulsive force generated by the second magnetic block 10 and the third magnetic block 11 on the first magnetic block 9 can fix the sliding plates in the middle or at both ends of their sliding trajectory. This enables the switching of multiple channels 5 between the observation port 2 and the detection port 3. In summary, this invention adopts a magnetic non-contact positioning design. Compared with the prior art, there is no friction and wear when driving the slider 4 to slide and switch channels 5. The device has a long service life and is not easily damaged when switching channels 5 at high frequency. It is practical.

[0040] like Figures 5-8 As shown, a further technical solution for driving the sliding plate 7 to move is disclosed. A fourth magnetic block 12 is installed on the sliding plate 7 and is located on the side of the second magnetic block 10 away from the third magnetic block 11. The fourth magnetic block 12 and the first magnetic block 9 are attracted by opposite polarities. The fourth magnetic block 12 on the sliding plate 7 corresponds to the third magnetic block 11 on the other sliding plate 7. With this design, when the sliding plate 7 is in the second or third position, when the third magnetic block 11 on the sliding plate 7 repels the first magnetic block 9 on one side of the slider 4 and pushes it to slide, the fourth magnetic block 12 on the other sliding plate 7 can attract the first magnetic block 9 on the other side of the slider 4.

[0041] like Figure 5 or Figure 8 As shown, when the slider 4 moves to the end of its movement trajectory, the distance between the first magnetic block 9 on it and the third magnetic block 11 on the slide plate 7 is relatively far, and the repulsive force is weak. That is, when in use, the slider 4 is easily affected by external factors and will be displaced. The design of the fourth magnetic block 12 can assist the third magnetic block 11 in positioning the slider 4, making it less likely to move.

[0042] like Figure 6 , Figure 7 and Figure 9 As shown, the specific structure of the pushing part 8 of this utility model is disclosed. The pushing part 8 includes a connecting block 801 constructed on the slide plate 7. The connecting block 801 is located in the middle of the slide plate 7 and is far away from the slider 4. A sliding groove 802 is provided on the outer side of the housing 1. The connecting block 801 and the sliding groove 802 are slidably engaged. A push plate 803 is connected to the end of the connecting block 801 and covers the side of the sliding groove 802 away from the slide plate 7. The push plate 803 is longer than the sliding groove 802. That is, when the connecting block 801 slides to both ends of the sliding groove 802, the push plate 803 will completely block the sliding groove 802. This design can prevent external impurities from entering the housing 1. A positioning member 804 is provided on the outer side of the housing 1 to fix the push plate 803 so that the push plate 803 is not easily displaced during use.

[0043] like Figure 7As shown, the specific structure of the positioning component 804 of this utility model is disclosed. The positioning component 804 includes a fifth magnet 8041. The fifth magnet 8041 is small in size and is linearly distributed on the outside of the housing 1, along the length of the slide groove 802, and is symmetrically arranged at the opening of the slide groove 802. The distance between adjacent fifth magnets 8041 is consistent with the distance the slide plate 7 travels from the first position to the second and third positions. A plurality of sixth magnets 8042 are provided on the push plate 803, and they are attracted to the fifth magnets 8041 by opposite polarity. The distance between adjacent sixth magnets 8042 is consistent with that of the fifth magnets 8041. With this design, when the push plate 803 is pushed to drive the slide plate 7 to the first, second, and third positions, the sixth magnets 8042 can be attracted to the fifth magnets 8041, thereby fixing the push plate 803. At the same time, pushing the push plate 803 can make the sixth magnets 8042 and the fifth magnets 8041 staggered, which facilitates their separation.

[0044] like Figure 4 and Figure 5 As shown, this utility model discloses a further technical solution for controlling the slider 4 to move quickly and stably. A rack 13 is installed on the slider 4, and a gear 14 that meshes with it is rotatably installed inside the housing 1. Since the slider 4 and the slide plate 7 are magnetically connected, and the slider 4 uses repulsive force as the driving force, when the slide plate 7 moves to the second position, although the slider 4 will move to the middle of the housing 1 under the repulsion of the two second magnetic blocks 10, during the movement, under the action of the slider 4's own inertia, the slider 4 will pass through the middle of the housing 1 and come into contact with one of the second magnets. At this time, under the action of repulsive force, the slider 4 will slide towards the middle of the housing 1 again. That is, the slider 4 will wobble slightly in the middle of the housing 1 and needs a certain amount of time to stabilize.

[0045] The design employs gear 14. When slider 4 slides, it drives gear 14 to rotate via rack 13. At this time, gear 14 rotates. When slider 4 passes through the middle of housing 1 under inertia and slides in the opposite direction under the repulsive force of the second magnet, due to the inertia of gear 14 when rotating around its axis of symmetry, "moment of inertia", gear 14 will apply a reverse resisting force to rack 13 when slider 4 slides in the opposite direction under the repulsive force. In other words, by increasing the sliding resistance of slider 4 at this time, the influence of the repulsive force is reduced, allowing slider 4 to quickly and smoothly come to a stop.

[0046] like Figure 5 and Figure 6As shown, the present invention discloses a further technical solution for the gear 14. The gear 14 is divided into four regions 15 evenly in the circumferential direction with the rotation axis as the center. Three of the regions 15 have through holes 16. Since the rotational inertia of the gear 14 is closely related to the mass of the gear 14, that is, the greater the mass of the gear 14, the greater its rotational inertia. The present invention reduces some of the mass by opening holes. However, the asymmetrical opening holes cause uneven mass distribution. During rotation, dynamic balance cannot be achieved, and additional inertial resistance will be generated.

[0047] In other words, by using the asymmetrical opening design, on the one hand, the mass of gear 14 can be reduced, making it easier for rack 13 to drive gear 14 to rotate; on the other hand, the rotational inertia of gear 14 can be increased.

[0048] like Figure 3 and 4 The diagram shows the specific structure of the light-emitting component 6 of this utility model. The channel 5 is T-shaped and has a vertical section 501 and a horizontal section 502 that are interconnected. The middle of the horizontal section 502 is broken. The observation port 2 and the detection port 3 are located at the two ends of the vertical section 501, respectively. The light-emitting component 6 includes a light source 601, a condenser lens group 602, and a first filter 603 arranged sequentially from the end of the horizontal section 502 toward the vertical section 501. The light source 601 in the three channels 5... The light sources are ultraviolet lamp, blue light lamp, and green light lamp, respectively. The condenser lens group 602 in the horizontal section 502 corresponds to the three light sources 601. A second filter 604 is provided at the end of the vertical section 501 facing the observation port 2. The first filter 603 is specifically an excitation filter, and the second filter 604 is specifically an emission filter. A beam splitter 605 is inclined in the vertical section 501. The beam splitter 605 is specifically a dichroic mirror to separate the first filter 603 and the second filter 604.

[0049] The principle is as follows: Light emitted from light source 601 passes through condenser lens group 602 and becomes a parallel beam. The parallel beam passes through first filter 603 (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 downwards by the coating surface of beam splitter 605 (e.g., DM565, where light with a wavelength greater than 565nm is projected and light with a wavelength less than 565nm is reflected), and shines on the sample surface, exciting transitions. The reflected light returns to beam splitter 605, where light with a wavelength less than 565nm is projected and passes through, and then passes through second filter 604 (e.g., LP590, where light with a wavelength greater than 590nm passes through), and the desired fluorescence signal is obtained and enters the observation system.

[0050] like Figure 8As shown, a further technical solution for controlling the light source 601 is disclosed. A switching mechanism 17 is provided at the end of the horizontal section 502 and is electrically connected to the light source 601. The switching mechanism 17 has a first contact and a second contact. When the first contact and the second contact are connected, the circuit of the light source 601 is turned on, and the light source 601 is energized. When the first contact and the second contact are separated, the circuit of the light source 601 is turned off, and the light source 601 is de-energized. A conductive block 1703, which is a copper block, is connected to the first contact. An elastic sheet 1704 is connected to the second contact. The spring is a conductive spring and it abuts against the conductive block 1703. The housing 1 is connected to the trapezoidal block 1701. The end of the elastic sheet 1704 is equipped with a roller 1702. The roller 1702 rolls against the trapezoidal block 1701. When the slider 4 moves to the middle or both ends of its sliding trajectory, the switch mechanism 17 on the channel 5 that communicates with the observation port 2 and the detection port 3 will move to the trapezoidal block 1701. At this time, the roller 1702 can slide on the inclined surface of the trapezoidal block 1701 and force the elastic sheet 1704 to abut against the conductive block 1703 so that the first contact and the second contact are connected.

[0051] The light source 601 circuit is linked with the slider 4 to facilitate user operation.

[0052] 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. A right-reading fluorescent illuminator comprising a housing (1), and a viewing port (2) and a detection port (3) provided on opposite sides of the housing, characterized in that, Also include: The slider (4) is slidingly installed in the shell (1), three passages (5) are linearly distributed on the slider (4), the observation port (2) is communicated with the detection port (3) through the passage (5), the passage (5) is provided with a light emitting component (6) for outputting a detection light source (601); Two slide plates (7) are connected with each other at both ends and are slidingly matched with the inner walls of the shell (1) on both sides, the shell (1) is provided with a pushing portion (8) on the outside for slidingly pushing the slide plate (7); Two first magnetic blocks (9) are respectively installed at both ends of the slider (4), the second magnetic block (10) is installed in the middle of the slide plate (7), the third magnetic block (11) is installed on the slide plate (7), the two third magnetic blocks (11) are arranged on the two sides of the two second magnetic blocks (10) in a staggered manner, and the second magnetic block (10) and the third magnetic block (11) repel each other.

2. The direct fluorescent luminaire of claim 1, wherein, The fourth magnetic block (12) is installed on the slide plate (7) and is located on the side of the second magnetic block (10) away from the third magnetic block (11), and the fourth magnetic block (12) and the first magnetic block (9) attract each other.

3. The direct fluorescent luminaire of claim 2, wherein, The pushing portion (8) comprises a connecting block (801) arranged on the slide plate (7), a sliding groove (802) is formed on the outside of the shell (1), the end of the connecting block (801) is connected with a push plate (803), and the push plate (803) covers one side of the sliding groove (802) away from the slide plate (7), and the outside of the shell (1) is provided with a positioning piece (804) for fixing the push plate (803).

4. The direct fluorescent luminaire of claim 3, wherein, The positioning piece (804) comprises a fifth magnetic block (8041) linearly distributed on the outside of the shell (1), and a plurality of sixth magnetic blocks (8042) are arranged on the push plate (803) and attract the fifth magnetic block (8041).

5. The direct fluorescent luminaire of claim 1, wherein, The slider (4) is provided with a rack (13), and a gear (14) engaged with the rack (13) is rotatably installed in the shell (1).

6. The direct fluorescent luminaire of claim 5, wherein, The gear (14) is evenly divided into four regions (15) along the circumference with the rotation axis as the center, and three regions (15) are provided with through holes (16).

7. The direct fluorescent luminaire of claim 1, wherein, The passage (5) is T-shaped and has a vertical section (501) and a horizontal section (502) which are communicated with each other, the observation port (2) and the detection port (3) are located at two ends of the vertical section (501), the light emitting component (6) comprises a light source (601), a light condenser group (602) and a first filter (603) arranged in the horizontal section (502) in sequence towards the vertical section (501), one end of the vertical section (501) towards the observation port (2) is provided with a second filter (604), and a light splitting piece (605) is obliquely arranged in the vertical section (501) to separate the first filter (603) and the second filter (604).

8. The direct fluorescent luminaire of claim 7, wherein, The horizontal section (502) is provided with a switch mechanism (17) at the end and is electrically connected with the light source (601), the switch mechanism (17) has a first contact and a second contact, the first contact is connected with a conductive block (1703), the second contact is connected with an elastic sheet (1704) and is in contact and lap with the conductive block (1703), the shell (1) is connected with a trapezoidal block (1701), the elastic sheet (1704) is provided at the end with a roller (1702), and the roller (1702) is in rolling lap with the trapezoidal block (1701).

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