Light source mechanism for detection
The modular design of the light source mechanism solves the problems of complex production, high cost and poor heat dissipation performance of existing light source mechanisms, and achieves efficient light filtering, optimized optical path and heat dissipation, reduces maintenance costs and enhances the flexibility and service life of the light source.
Patent Information
- Application Number
- CN202423274295.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing light source mechanisms are complex to manufacture, costly, have poor heat dissipation performance, lack flexibility in use, and have high maintenance costs.
It adopts a modular design, including a light source module, lens group, filter and heat conduction block. The lens group optimizes the optical path, the filter filters out non-specific wavelengths, the heat conduction block improves heat dissipation performance, and the dichroic mirror expands the application range of the light source.
It achieves efficient filtering of non-specific wavelength light, improves the utilization rate and illumination effect of the light source, reduces the cost and maintenance difficulty of the light source mechanism, extends the service life, and enhances flexibility.
Smart Images
Figure CN223499401U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a light source mechanism for detection. Background Technology
[0002] Currently, in medical testing, it is often necessary to use a light source to emit specific light to excite fluorescent proteins or other fluorescent markers on the biological sample being tested, which requires a specialized light source mechanism. Existing light source mechanisms generally consist of a light source module and an interference filter. An interference filter is an optical thin film that utilizes the principle of thin-film interference to allow only light within a specific spectral range to pass through. When light passes through the multilayered thin-film structure of the interference filter, different wavelengths of light are reflected and interfered between the layers, causing specific wavelengths of light to reinforce each other, while other wavelengths cancel each other out. However, interference filters are typically composed of multiple thin films, the thickness, refractive index, and material selection of which are carefully designed to achieve specific filtering effects. Therefore, the production process of interference filters requires high-precision thin-film preparation and coating technology, making the process complex and difficult to control. Furthermore, interference filters have extremely high requirements for parameters such as material selection, film thickness, and refractive index, resulting in high manufacturing and maintenance costs. At the same time, existing light source mechanisms are relatively inflexible in use, lack heat dissipation structures, have poor heat dissipation performance, and short service life. Utility Model Content
[0003] The purpose of this invention is to provide a light source mechanism for detection, the core function of which is to filter light and ensure that the light source emits only light of a specific wavelength to meet the precise lighting needs of scientific research, medical treatment, detection and other fields, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a detection light source mechanism, including a first mounting base, the first mounting base having a through-cavity, a light source module, a lens group, and a filter arranged sequentially from bottom to top, the light source module, lens group, and filter being connected to the upper end of the first mounting base, the second mounting base having a through-cavity, a dichroic mirror being installed therein, the lower port of the cavity of the second mounting base being a connection port, the connection port being connected to the upper port of the cavity of the first mounting base, the upper port of the cavity of the second mounting base being a light-transmitting port, and a heat-conducting block being provided below the light source module.
[0005] Further preferably, the lens group includes a hemispherical lens, a first convex lens, and a second convex lens arranged sequentially from bottom to top. The second convex lens is located below the filter. A first spacer is provided between the hemispherical lens and the first convex lens, a second spacer is provided between the first convex lens and the second convex lens, and a third spacer is provided between the second convex lens and the filter. The hemispherical lens is used to focus and collect the light emitted by the light source module. The first and second convex lenses can convert the light passing through the hemispherical lens into a straight line for emission. The first, second, and third spacers are used for spacing and installation between the hemispherical lens, the first convex lens, and the second convex lens, ensuring stable installation of the hemispherical lens, the first convex lens, and the second convex lens.
[0006] Further preferably, a fixing ring is provided above the filter, and the fixing ring is threadedly connected to the first mounting base to facilitate the connection between the fixing ring and the first mounting base; the fixing ring is provided with several locking slots to facilitate the rotation of the fixing ring.
[0007] In a further preferred embodiment, a thermally conductive medium is provided between the light source module and the heat-conducting block, which has good thermal conductivity and can ensure efficient heat transfer.
[0008] Further preferably, the substrate of the light source module is provided with several limiting grooves, and the limiting grooves are connected to the heat-conducting block by screws to realize the connection between the light source module and the heat-conducting block; the heat-conducting block is connected to the first mounting base by screws and / or buckles, and the connection method is different and the connection is convenient.
[0009] In a further preferred embodiment, the dichroic mirror is connected to a fixing frame, the dichroic mirror is embedded in the fixing frame, and the fixing frame is inserted into a second mounting base, which facilitates the installation, adjustment, and replacement of the dichroic mirror.
[0010] Further preferably, the upper end of the first mounting base is provided with a flange, which is inserted into the second mounting base. The upper end of the first mounting base, located below the flange, is provided with a square boss. Each of the four corners of the boss is provided with a through hole for threaded connection with the second mounting base. The through holes on the boss enable precise connection and fixation of the first and second mounting bases.
[0011] Further preferably, the dichroic mirror is tilted, and the second mounting base is a square cylindrical structure with a spare connection port on one side facing the dichroic mirror, which connects to the cavity of the second mounting base. This spare connection port can connect to other different light source modules, and the tilted arrangement of the dichroic mirror emits light from the spare light source, expanding the application range of this light source mechanism and meeting the needs of generating different light sources.
[0012] Beneficial effects: The detection light source mechanism of this utility model can effectively filter out light of non-specific wavelengths by setting up filters, ensuring that the light source outputs pure and stable light of specific wavelengths, and with the cooperation of dichroic mirrors, ensure that the output light is the required light.
[0013] Lens groups can optimize the optical path, focus light on the desired area, and improve the utilization rate and illumination effect of the light source.
[0014] By connecting the light source module to the heat-conducting block, the heat generated by the light source module can be conducted to the outside, which can effectively improve the heat dissipation performance of the light source mechanism, ensure that the operating temperature of the light source mechanism is kept within a reasonable range, and guarantee the stability and service life of the light source mechanism.
[0015] The light source mechanism adopts a modular design, and each component can be disassembled and replaced independently. This makes the filters, dichroic mirrors, and lens groups easy to disassemble, adjust, and replace, meeting the needs of different experimental or application scenarios and greatly improving the flexibility and maintainability of the light source mechanism. At the same time, the disassembly of each component is simple and quick, reducing maintenance costs and time.
[0016] The structure of this light source mechanism is relatively simple, and the components are low-cost and easy to manufacture, which greatly reduces the cost of the light source mechanism. Attached Figure Description
[0017] Figure 1 This is an exploded structural diagram of the detection light source mechanism disclosed in the embodiment of this utility model;
[0018] Figure 2 This is an isometric structural diagram of the detection light source mechanism disclosed in the embodiment of this utility model;
[0019] Figure 3 This is a front view schematic diagram of the detection light source mechanism disclosed in the embodiment of this utility model;
[0020] Figure 4 This is a cross-sectional structural schematic diagram of the detection light source mechanism disclosed in the embodiment of this utility model;
[0021] Figure 5 This is a schematic diagram of the optical path of the detection light source mechanism disclosed in the embodiment of this utility model;
[0022] Figure 6 The schematic diagram shows the structure of the detection light source mechanism disclosed in this embodiment of the utility model, which has two light sources.
[0023] Reference numerals: 10-Slide holder base, 101-Slide positioning hole, 102-First step, 103-Second step, 104-Lock tongue mounting groove, 105-Through hole, 106-Connecting block mounting groove, 107-First limiting slope, 108-Mounting hole, 109-Insertion platform, 110-Push block, 20-Lock tongue, 201-Lock tongue body, 202-Push block, 203-Second limiting slope, 204-First connecting hole, 205-First mounting groove, 30-Connecting block, 301-Connecting block body, 302-Limiting platform, 303-Second connecting hole, 304-Second mounting groove, 40-Elastic element, 50-Magnet, 60-Slide. Detailed Implementation
[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0025] like Figure 1-6 As shown, a light source mechanism for detection is used in medical detection and identification, providing a light source for a biomedical imaging system. The light source mechanism includes a first mounting base 1 with a through-cavity, housing a light source module 2, a lens group 3, and a filter 4, arranged sequentially from bottom to top. The light source module 2 emits the required initial light, the lens group 3 focuses and collects the light, converting it into direct light for emission, and the filter 4 filters out non-specific wavelengths, retaining only the desired wavelength. A second mounting base 5 is connected to the upper end of the first mounting base 1. The second mounting base 5 has a through-cavity for mounting a dichroic mirror 6, which further restricts the light filtered by the filter 4, allowing only the desired light to pass through while blocking other light. The second mounting base 5 is connected to the first mounting base 1. The lower port of the cavity of the second mounting base 5 is a connection port 52, which is connected to the upper port of the cavity of the first mounting base 1. This ensures that the light emitted by the light source module 2 can be emitted after being filtered through multiple layers, and is emitted through the light-transmitting port 51 on the second mounting base 5. The emitted light is the final required biological fluorescence excitation light, used to excite the fluorescence emitted by fluorescent proteins or other fluorescent markers on the biological sample to be tested. A heat-conducting block 7 is provided below the light source module 2, which can effectively conduct the heat generated by the light source module 2 to the outside, ensuring that the light source module 2 can work for a long time, thereby ensuring that the light source mechanism can maintain stable performance under long-term operation and extending the service life of the light source mechanism.
[0026] In this application, the lens group 3 includes a hemispherical lens 31, a first convex lens 32, and a second convex lens 33 arranged sequentially from bottom to top. The second convex lens 33 is located below the filter 4. The hemispherical lens 31 is used to collect light, while the first convex lens 32 and the second convex lens 33 are used to convert divergent light into direct light. The three lenses of the lens group 3 maximize the utilization of the light emitted by the light source module 2. A first spacer 34 is provided between the hemispherical lens 31 and the first convex lens 32, a second spacer 35 is provided between the first convex lens 32 and the second convex lens 33, and a third spacer 36 is provided between the second convex lens 33 and the filter 4. The first spacer 34, the second spacer 35, and the third spacer 36 ensure the stable installation of the hemispherical lens 31, the first convex lens 32, the second convex lens 33, and the filter 4, thus ensuring the stability of the light source mechanism.
[0027] In this application, a retaining ring 8 is provided above the filter 4. The retaining ring 8 is threadedly connected to the first mounting base 1. The retaining ring 8 is used to fix and lock the filter 4, thereby fixing the second convex lens 33, the first convex lens 32, and the hemispherical lens 31 into the cavity of the first mounting base 1. The fixing method is simple and easy, and easy to maintain and replace. The retaining ring 8 is provided with several latches, which facilitates the rotation of the retaining ring 8 to fix the retaining ring 8 relative to the first mounting base 1.
[0028] In this application, a thermally conductive medium is provided between the light source module 2 and the heat-conducting block 7 to ensure efficient heat transfer. This thermally conductive medium can be thermally conductive adhesive or a thermally conductive pad, etc. In this application, the heat-conducting block 7 is made of a material with high thermal conductivity and heat dissipation performance, such as copper or alumina. Copper is preferred as the heat-conducting block 7 because it has excellent thermal conductivity and can conduct the heat generated by the light source module 2 to the external heat dissipation system, ensuring that the operating temperature of the light source mechanism is kept within a reasonable range.
[0029] In this application, the substrate of the light source module 2 is provided with several limiting grooves 21. The limiting grooves 21 are engaged with the heat-conducting block 7 by screws, ensuring a firm and stable connection between the light source module 2 and the heat-conducting block 7, and effectively ensuring heat conduction to the light source module 2. The heat-conducting block 7 is connected to the first mounting base 1 by screws and / or clips, realizing quick installation of the heat-conducting block 7 in the first mounting base 1, and the installation method is simple.
[0030] In the solution of this application, the dichroic mirror 6 is connected to a fixing bracket 9 for the installation and fixing of the dichroic mirror 6; the dichroic mirror 6 is embedded in the fixing bracket 9, and the fixing bracket 9 is inserted into the second mounting base 5, so as to realize the quick installation of the dichroic mirror 6 on the second mounting base 5 and facilitate replacement.
[0031] In the solution of this application, the upper end of the first mounting base 1 is provided with a flange 11, which is inserted into the second mounting base 5. The upper end of the first mounting base 1 and below the flange 11 is provided with a square boss 12. The four corners of the boss 12 are provided with through holes for threaded connection with the second mounting base 5. The flange 11 enables the quick connection between the first mounting base 1 and the second mounting base 5 and can prevent other light from entering the light source mechanism and affecting the light purity of the light source mechanism. The boss 12 and the second mounting base 5 enable the quick and stable connection between the first mounting base 1 and the second mounting base 5.
[0032] In another embodiment of this application, the dichroic mirror 6 is tilted, and the second mounting base 5 is a square cylindrical structure. One side of the second mounting base 5 facing the dichroic mirror 6 has a spare connection port 53 connecting to the cavity of the second mounting base 5. Through the spare connection port 53, another different light source can be connected, i.e., a spare light source, enabling the installation and replacement of multiple light sources. For example, the light source module 2 in the first mounting base is a UV light source. A spare mounting base 10 is connected through the spare connection port 53. The spare mounting base 10 has the same structure as the first mounting base 1, including the light source module 2, lens group 3, and filter 4. The light source module 2 in the spare mounting base 10 can be a blue light source. That is, by setting the spare connection port 53, different light sources can be integrated into one unit. When it is necessary to replace the light source, only the power switch of the corresponding light source module 2 needs to be switched on and off. The light emitted by the spare light source is refracted by the dichroic mirror 6 and emitted from the light-transmitting port 51. Figure 6 As shown.
[0033] In this application, the working principle of the light source mechanism is as follows: when the light source module 2 is powered on, it emits light. The light is collected and focused by the hemispherical lens 31, and then converted into upward straight light by the first convex lens 32 and the second convex lens 33. The straight light is filtered by the filter 4 to block light of non-specific wavelengths and retain only the light of the required wavelength. Then, some of these light rays pass through the dichroic mirror 6 and are emitted upward, while some of the unwanted light rays are blocked again. The straight light rays that pass through the dichroic mirror 6 are the final required light source light.
[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A light source mechanism for detection, characterized in that: The device includes a first mounting base (1), which has a through cavity running vertically through the body. Inside the cavity, there is a light source module (2), a lens group (3), and a filter (4). The light source module (2), the lens group (3), and the filter (4) are arranged sequentially from bottom to top. The upper end of the first mounting base (1) is connected to a second mounting base (5). The second mounting base (5) has a through cavity running vertically through the body. Inside the cavity, there is a dichroic mirror (6). The lower end of the cavity of the second mounting base (5) is a connection port (52), which is connected to the upper end of the cavity of the first mounting base (1). The upper end of the cavity of the second mounting base (5) is a light-transmitting port (51). A heat-conducting block (7) is provided below the light source module (2).
2. The detection light source mechanism according to claim 1, characterized in that: The lens group (3) includes a hemispherical lens (31), a first convex lens (32) and a second convex lens (33) arranged sequentially from bottom to top. The second convex lens (33) is located below the filter (4). A first spacer (34) is provided between the hemispherical lens (31) and the first convex lens (32). A second spacer (35) is provided between the first convex lens (32) and the second convex lens (33). A third spacer (36) is provided between the second convex lens (33) and the filter (4).
3. The light source mechanism for detection according to claim 1, characterized in that: A fixing ring (8) is provided above the filter (4), and the fixing ring (8) is threadedly connected to the first mounting base (1). The fixing ring (8) has several bayonets.
4. The detection light source mechanism according to claim 1, characterized in that: A heat-conducting medium is provided between the light source module (2) and the heat-conducting block (7).
5. The light source mechanism for detection according to claim 1, characterized in that: The substrate of the light source module (2) is provided with several limiting grooves (21), the limiting grooves (21) are connected to the heat-conducting block (7) by screws, and the heat-conducting block (7) is connected to the first mounting base (1) by screws and / or buckles.
6. The light source mechanism for detection according to claim 1, characterized in that: The dichroic mirror (6) is connected to a fixing frame (9), the dichroic mirror (6) is embedded in the fixing frame (9), and the fixing frame (9) is inserted into the second mounting base (5).
7. The detection light source mechanism according to claim 1, characterized in that: The upper end of the first mounting base (1) is provided with a flange (11), which is inserted into the second mounting base (5). The upper end of the first mounting base (1) and below the flange (11) is provided with a square boss (12). The four corners of the boss (12) are provided with through holes that are threadedly connected to the second mounting base (5).
8. The light source mechanism for detection according to claim 1, characterized in that: The dichroic mirror (6) is tilted, and the second mounting base (5) is a square cylindrical structure. One side of the second mounting base (5) facing the upper side of the dichroic mirror (6) is provided with a spare connection port (53) that connects to the cavity of the second mounting base (5).