Lens pressing plate, array type lens mounting structure and array type lens device

Abstract

The utility model discloses a lens pressing plate, an array type lens installation structure and an array type lens device, and relates to the technical field of lens installation, according to the array type lens device provided by the utility model, each single lens is fixed on a hot cover by utilizing the lens pressing plate, and the uniformity of the array type lens structure is obviously superior to that of a mould pressing integrated type; and the consistency and stability of the single lens are ensured, so that the accuracy and reliability of optical signal acquisition are improved. Meanwhile, the modular design enables the installation and replacement of the single lens to be more convenient, facilitates the daily maintenance and control, effectively reduces the maintenance cost, and prolongs the service life of the instrument.

Description

Technical Field

[0001] This utility model relates to the field of lens mounting technology, specifically to a lens pressure plate, an array lens mounting structure, and an array lens device. Background Technology

[0002] Real-time quantitative PCR (qPCR) is a highly sensitive and specific nucleic acid amplification technique widely used in molecular biology and clinical diagnostics. By adding a fluorescent group to the PCR reaction system, the entire PCR reaction process is monitored in real time using the accumulation of fluorescence signals, and unknown templates are quantitatively analyzed using a standard curve. This technology has significant application value in gene expression analysis, pathogen detection, mutation analysis, and other fields.

[0003] Traditional real-time quantitative PCR (qPCR) instruments primarily employ a monolithic array lens system, where multiple lens arrays are fixedly integrated onto a single plate to detect fluorescence signals from multiple PCR reaction wells. While this structure improves detection efficiency to some extent, it also has several significant drawbacks: high cost—when a single lens is damaged or its performance deteriorates (e.g., due to transmittance reduction), the entire plate must be replaced, significantly increasing maintenance and operating costs; compromised detection accuracy—the monolithic lens array requires extremely high uniformity among its lenses during assembly, and even minute inconsistencies can lead to differences in fluorescence signal acquisition from wells, thus affecting the accuracy of the results; and high maintenance difficulty—replacing and adjusting the entire lens array requires advanced technical skills and considerable time, making it inconvenient for routine maintenance and troubleshooting. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems by providing a lens clamping plate, an array lens mounting structure, and an array lens device. The lens clamping plate secures each individual lens to a heated cover. This array lens structure offers significantly better uniformity than a molded, one-piece design, ensuring the consistency and stability of individual lenses and thus improving the accuracy and reliability of optical signal acquisition. Furthermore, this modular design makes the installation and replacement of individual lenses more convenient, facilitating daily maintenance and control, effectively reducing maintenance costs, and extending the instrument's lifespan.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A lens clamping plate includes a clamping plate base with a central fixing hole and multiple circumferential lens holes distributed on the base. The circumferential lens holes are arranged in a ring array around the central fixing hole. Fasteners can be used to constrain the lens clamping plate to a mounting surface through the central fixing hole, forming a fixed constraint. The fasteners are adjustablely connected to the mounting surface. Each circumferential lens hole has a diameter matching relationship with a corresponding single lens. The hole wall can mechanically limit the circumferential edge of the single lens, so that the circumferential edge of the single lens forms a positioning contact with the mounting surface.

[0007] Furthermore, the cross-section of the single lens is circular, the circumferential lens aperture is a circular hole that matches the single lens, and the ratio of the diameter of the circumferential lens aperture to the diameter of the corresponding single lens is 0.85-0.95.

[0008] An array-type lens mounting structure includes multiple lens clamping plates as described above, and also includes multiple single lenses. The multiple lens clamping plates cooperate with each other to form a lens clamping layer, and the single lenses are disposed between the lens clamping layer and the mounting base surface.

[0009] Furthermore, the mounting base surface is provided with mounting grooves that match the single lenses one by one, and the bottom of the mounting groove is provided with a light-transmitting hole. The single lens is assembled in the mounting groove, and the thickness of the single lens is greater than the depth of the mounting groove.

[0010] An array lens device includes the above-described array lens mounting structure. The mounting base is a heat cover. The heat cover has positioning holes that can match fasteners and mounting grooves that correspond one-to-one with the circumferential lens holes. The bottom of the mounting groove has a light-transmitting through hole. The single lens is assembled in the mounting groove. The fastener passes through the central fixing hole and is assembled in the positioning hole, and restricts the lens pressure plate to the heat cover. The lens pressure plate restricts and presses the single lens to the heat cover.

[0011] Furthermore, a heating film for the hot cover is provided between the lens clamping layer and the single lens, which can provide a heat source for the hot cover. The heating film for the hot cover is provided with an assembly through hole that matches the central fixing hole and the circumferential lens hole.

[0012] Furthermore, it also includes a hot cover top plate and a hot cover bottom frame. The hot cover bottom frame is a frame-shaped structure that matches the edge of the hot cover. The hot cover bottom frame can restrict the hot cover to the hot cover top plate. The hot cover top plate is provided with detection holes that correspond one-to-one with the circumferential lens holes.

[0013] Furthermore, the hot cover has a top plate positioning protrusion on one side of the hot cover top plate, and the hot cover top plate has a top plate positioning groove that matches the top plate positioning protrusion. The top plate positioning protrusion is assembled in the top plate positioning groove. One side of the lens pressure plate matches the single lens, and the other side abuts against the hot cover top plate.

[0014] Furthermore, the hot cover has a bottom plate positioning protrusion on one side of the hot cover bottom frame, and the hot cover bottom frame is fitted over the bottom plate positioning protrusion.

[0015] Furthermore, the bottom frame of the heat cover at least partially corresponds to the positioning protrusion of the top plate.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] 1. This utility model adopts a modular design with multiple lens pressure plates, which ensures the independence and stability of a single lens, making the installation and replacement of a single lens more convenient.

[0018] 2. This utility model has a structural design with a central fixing hole located at the center of the lens pressure plate and four circumferential lens holes located at the four corners of the lens pressure plate, which can simultaneously take into account modular installation and stable clamping of a single lens.

[0019] 3. This utility model has a mounting groove on the mounting base surface that matches the single lens, which ensures the stable installation of the single lens and prevents the lens from shifting or falling off on the heat cover. At the same time, the design of the light-transmitting hole ensures the efficient transmission of light signals and improves the detection sensitivity and accuracy.

[0020] 4. This utility model adopts a circular single lens and a slightly smaller diameter circumferential lens hole design to ensure that the circumferential lens hole can stably press the single lens onto the heat cover.

[0021] 5. This utility model sets a heating film for the hot cover between the lens pressing layer and the single lens, which not only provides a uniform heat source for the hot cover, but also improves the heat transfer efficiency and temperature control accuracy through the close contact between the heating film and the hot cover, thereby enhancing the stability and reliability of the PCR reaction.

[0022] 6. This utility model, through the design of the top plate positioning protrusion and the bottom plate positioning protrusion, as well as the corresponding design of the bottom frame of the hot cover and the top plate positioning protrusion, ensures the precise alignment of the hot cover with the top plate and the bottom frame of the hot cover, prevents the hot cover from shifting and light signal leakage during use, enhances the stability and reliability of the entire lens mounting structure, and improves the environmental control of the PCR reaction and the accuracy of the detection results. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the array lens mounting structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the lens pressure plate of this utility model;

[0025] Figure 3 This is an assembly drawing of the array lens device of this utility model.

[0026] The markings in the diagram are: 1-single lens, 2-lens pressure plate, 3-heat cover, 4-heat cover heating film, 5-positioning hole, 6-assembly through hole, 21-center fixing hole, 22-circumferential lens hole, 7-heat cover top plate, 8-heat cover bottom frame, 9-top plate positioning protrusion, 10-bottom plate positioning protrusion, 11-top plate positioning groove. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] Example 1

[0030] A lens pressure plate 2, such as Figure 2 As shown, the device includes a pressure plate base with a central fixing hole 21 and multiple circumferential lens holes 22 distributed on it. The circumferential lens holes 22 are arranged in a ring array around the central fixing hole 21 to form a central fixing structure. By placing the central fixing hole 21 in the center, the central fixing structure provides sufficient space for the peripheral circumferential lens holes 22, enabling one lens pressure plate 2 to simultaneously press and fix multiple single lenses 1. Fasteners can restrict the lens pressure plate 2 to the mounting base surface through the central fixing hole 21 to form a fixed constraint. The fasteners are adjustablely connected to the mounting base surface. Preferably, the fasteners are screws, which are adjustablely connected to the mounting base surface through threads. The overall preload of the pressure plate base can be precisely controlled by adjusting the screw depth, thereby simultaneously constraining all single lenses 1 corresponding to the circumferential lens holes 22. Each circumferential lens hole 22 forms a diameter matching relationship with the corresponding single lens 1. The hole wall can form a mechanical limit on the circumferential edge of the single lens 1, so that the circumferential edge of the single lens 1 forms a positioning contact with the mounting base surface.

[0031] The single lens 1 has a circular cross-section, and the corresponding lens clamping plate 2 has a matching circumferential lens hole 22. The ratio of the diameter of the circumferential lens hole 22 to the diameter of the corresponding single lens 1 is 0.85-0.95, slightly smaller than the diameter of the single lens 1. When the lens clamping plate 2 is fixed to the mounting base, the interference fit generated by the diameter difference allows the edge of the lens hole 22 to press against the circumferential edge of the single lens 1. This structural design not only achieves reliable assembly constraint for the single lens 1, preventing its displacement, but also minimizes the obstruction of the effective light-transmitting area because the contact area of ​​the clamping plate only acts on the lens edge. In this embodiment, the diameter of the single lens 1 is 6.3 mm, and the diameter of the corresponding circumferential lens hole 22 is 5.7 mm.

[0032] The lens plate 2 can be as follows: Figure 2 The rectangle shown is preferably a square, with a central fixing hole 21 located at the center of the lens pressure plate 2 and four circumferential lens holes 22 located at the four corners of the lens pressure plate 2. It is understood that the rectangle is only the most preferred technical solution, and shapes such as circles and ovals are also acceptable, as long as the central fixing hole 21 and the multiple circumferential lens holes 22 can form a central fixing structure, it is considered to fall within the protection scope of this application.

[0033] Example 2

[0034] An array-type lens mounting structure, such as Figure 1 As shown, the system includes multiple lens clamping plates 2 and multiple single lenses 1 provided in Embodiment 1. The multiple lens clamping plates 2 cooperate with each other to form a lens clamping layer. The single lens 1 is disposed between the lens clamping layer and the mounting base surface. Each lens clamping plate 2 is provided with a central fixing hole 21 and a circumferential lens hole 22. Fasteners can restrict the lens clamping plate 2 to the mounting base surface through the central fixing hole 21. The circumferential lens hole 22 can be matched one by one with the single lens 1 and restrict the edge of the single lens 1 to the mounting base surface.

[0035] The mounting base surface is provided with mounting grooves that match the single lens 1 one by one. The bottom of the mounting groove is provided with a light-transmitting hole. The single lens 1 is assembled in the mounting groove. The thickness of the single lens 1 is greater than the depth of the mounting groove. When the single lens 1 is assembled in the mounting groove, an interference fit of 0.05-0.15mm is set between its thickness and the depth of the mounting groove. When the interference fit is greater than 0.15mm, an axial preload is generated to enhance the positioning stability of the single lens 1, but it may cause stress concentration at the edge of the single lens 1, affecting the optical surface accuracy. When the interference fit is less than 0.05mm, although the assembly stress can be reduced, there is an axial clearance that may lead to the risk of lens displacement. The optimized interference fit range can effectively control the surface distortion caused by edge pressing of the single lens 1 while ensuring the stability of the single lens 1.

[0036] Example 3

[0037] An array lens device, used in PCR instruments, such as... Figures 1-3 As shown, the array lens mounting structure provided in Embodiment 2 is included. The mounting base is a heat cover 3. The heat cover 3 is provided with positioning holes 5 that can match the fasteners and mounting grooves that correspond one-to-one with the circumferential lens holes 22. The bottom of the mounting groove is provided with a light-transmitting through hole. The single lens 1 is assembled in the mounting groove. The fastener passes through the central fixing hole 21 and is assembled in the positioning hole 5, and restricts the lens pressure plate 2 to the heat cover 3. The lens pressure plate 2 restricts and presses the single lens 1 to the heat cover 3.

[0038] Between the lens clamping layer and the single lens 1, there is also a heat cover heating film 4 that can provide a heat source for the heat cover 3. The heat cover heating film 4 is provided with an assembly through hole 6 that matches the central fixing hole 21 and the circumferential lens hole 22.

[0039] It also includes a hot cover top plate 7 and a hot cover bottom frame 8. The hot cover bottom frame 8 is a frame structure that matches the edge of the hot cover 3. The hot cover bottom frame 8 can restrict the hot cover 3 to the hot cover top plate 7 through a connector. The hot cover top plate 7 is provided with detection holes that correspond one-to-one with the circumferential lens holes 22.

[0040] The excitation light source is processed by the optical system of the PCR instrument to form parallel light. The parallel light passes sequentially through the detection hole of the top plate of the heated cover, the circumferential lens hole 22, and the heating film 4 of the heated cover. It is then focused by the single lens 1 and passes through the heated cover 3 to form a light spot. Finally, it converges in the consumable hole containing the sample to be tested, exciting the dye / probe in the consumable to emit fluorescence. The fluorescence passes through the heated cover 3 in the reverse direction according to the aforementioned light path. The single lens 1 disperses the light spot into parallel light. The parallel light passes sequentially through the heating film 4 of the heated cover, the circumferential lens hole 22, and the detection hole of the top plate of the heated cover, and enters the optical system of the PCR instrument. The optical system performs optical processing on the parallel light.

[0041] The hot cover 3 has a top plate positioning protrusion 9 on one side of the hot cover top plate 7. The hot cover top plate 7 has a top plate positioning groove 11 that matches the top plate positioning protrusion 9. The top plate positioning protrusion 9 is assembled in the top plate positioning groove 11. The lens pressure plate 2 matches the single lens 1 on one side and abuts against the hot cover top plate 7 on the other side.

[0042] The hot cover 3 has a bottom plate positioning protrusion 10 on one side of the hot cover bottom frame 8, and the hot cover bottom frame 8 is sleeved on the bottom plate positioning protrusion 10.

[0043] The bottom frame 8 of the heat cover corresponds at least partially to the positioning protrusion 9 of the top plate.

[0044] This ensures precise alignment of the hot cover 3 with the hot cover top plate 7 and the hot cover bottom frame 8, preventing displacement of the hot cover 3 and light signal leakage during use. It also enhances the stability and reliability of the entire lens mounting structure and improves the environmental control and accuracy of PCR reaction results.

[0045] During installation, first place the single lens 1 in the mounting groove, then place the heating film 4 and the lens pressure plate 2 in sequence. Finally, use fasteners to thread them through the central fixing hole 21 of the lens pressure plate 2 and the mounting through hole 6 on the heating film 4 to the positioning hole 5, and adjust and tighten the single lens 1 through the threaded connection. When the image of the test result has a problem, the lens pressure plate 2 at the corresponding position can be removed and the faulty single lens 1 can be replaced without replacing the entire lens plate.

[0046] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

[0047] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A lens press plate characterized by, The lens pressing plate base body is provided with a central fixed hole and a plurality of circumferential lens holes, the circumferential lens holes are arranged in a ring array outside the central fixed hole, a fastener can limit the lens pressing plate to the mounting base surface through the central fixed hole to form a fixed constraint, and the fastener is adjustably connected with the mounting base surface; each circumferential lens hole is in a diameter matching relationship with a corresponding single lens, and the circumferential edge of the single lens is mechanically limited by the hole wall to form a positioning contact with the mounting base surface.

2. The lens platen of claim 1, wherein The cross section of the single lens is circular, the circumferential lens hole is a circular hole matched with the single lens, and the ratio of the diameter of the circumferential lens hole to the diameter of the corresponding single lens is 0.85-0.

95.

3. An array lens mounting structure comprising a plurality of lens press plates as claimed in claim 1 or 2, further comprising a plurality of single lenses, characterized in that, A plurality of the lens pressing plates are matched to form a lens pressing layer, and the single lens is arranged between the lens pressing layer and the mounting base surface.

4. The array lens mounting structure according to claim 3, wherein The mounting base surface is provided with a mounting groove matched with the single lens one by one, the bottom of the mounting groove is provided with a light transmission through hole, the single lens is assembled in the mounting groove, and the thickness of the single lens is greater than the depth of the mounting groove.

5. An arrayed lens device, characterized by comprising: The array lens mounting structure comprises the array lens mounting structure of any one of claims 3-4, the mounting base surface is a heat cover, the heat cover is provided with a positioning hole matched with the fastener and a mounting groove corresponding to the circumferential lens hole one by one, the bottom of the mounting groove is provided with a light transmission through hole; the single lens is assembled in the mounting groove, the fastener is assembled in the positioning hole through the central fixed hole, and the lens pressing plate is limited on the heat cover, and the single lens is limited and pressed on the heat cover.

6. The arrayed lens device of claim 5, wherein, The lens pressing layer and the single lens are further provided with a heat cover heating film capable of providing a heat source for the heat cover, and the heat cover heating film is provided with an assembly through hole matched with the central fixed hole and the circumferential lens hole.

7. The array lens device of claim 5, wherein, The heat cover further comprises a heat cover top plate and a heat cover bottom frame, the heat cover bottom frame is a frame-shaped structure matched with the edge of the heat cover, the heat cover bottom frame can limit the heat cover on the heat cover top plate, and the heat cover top plate is provided with a detection hole corresponding to the circumferential lens hole one by one.

8. The array lens device of claim 7, wherein, The edge of the heat cover corresponding to one side of the heat cover top plate is provided with a top plate positioning protrusion, the heat cover top plate is provided with a top plate positioning groove matched with the top plate positioning protrusion, the top plate positioning protrusion is assembled in the top plate positioning groove, and one side of the lens pressing plate matched with the single lens abuts against the heat cover top plate.

9. The array lens device of claim 8, wherein, The edge of the heat cover corresponding to one side of the heat cover bottom frame is provided with a bottom plate positioning protrusion, and the heat cover bottom frame is sleeved outside the bottom plate positioning protrusion.

10. The arrayed lens device of claim 9, wherein, The heat cover bottom frame is at least partially matched with the top plate positioning protrusion.

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