Single-channel fluorescence detection device with sandwich structure

Abstract

The utility model provides a single-channel fluorescence detection device with a sandwich structure. The single-channel fluorescence detection device comprises a pool seat assembly, a shielding box, a shielding cover, a biconvex lens and a biconvex lens seat, the pool seat assembly is a 7-shaped cuboid and is provided with various bosses and hole grooves; the shielding box and the shielding cover are cuboids and are provided with corresponding groove and boss structures; and the biconvex lens is arranged on the biconvex lens seat, and is matched with the pool seat assembly and the shielding cover through the boss of the biconvex lens. The collecting lens of the device has front and side mounting modes, so that the development period is shortened; the sandwich structure simplifies the assembly process and improves the efficiency; the structure is compact, the size is small, the weight is light, electromagnetic interference can be shielded through materials of the shielding box and the shielding cover, and detection accuracy and stability are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluorescent detector technical field, specifically, especially, it relates to a " sandwich structure " single channel fluorescence detection device. BACKGROUND

[0002] Fluorescence detection belongs to photoluminescence type detection technology, and the fluorescence detector has high selectivity and ultrahigh sensitivity, and occupies an important position in ultratrace molecular level detection. With the development of science and technology, special requirements have been made on the weight and size of instruments and equipment, prompting the fluorescence detection equipment to develop towards miniaturization and micromation.

[0003] However, the current fluorescence detection technology has some problems. First, only the change of the light source's own luminous intensity can be corrected, which may cause inaccurate detection results in complex detection environment. For example, when the external light condition changes, the external light interference cannot be effectively corrected, which may affect the accurate reading of the fluorescence signal. Second, the detection method by switching two light paths to generate different wavelength excitation light has some shortcomings. Using a dichroic mirror to split light cannot perform secondary filtering, which may cause stray light to enter the detection system, reducing the detection signal-to-noise ratio. Moreover, the distance between the LED shaping lens and the LED is large, increasing the space volume, which does not meet the development trend of equipment miniaturization and micromation. In addition, the single lens is used as the converging lens of two channels, and the light beam shaping effect is uncontrollable, which may cause uneven intensity and distribution of excitation light, thereby affecting the sensitivity and accuracy of fluorescence detection. SUMMARY

[0004] In view of the above technical problems, a " sandwich structure " single channel fluorescence detection device is provided. The collecting lens mounted on the shell has two installation modes of front and side, thereby meeting various market demands, reducing the development cycle of the single channel fluorescence detection device, and at the same time, the " sandwich structure " and the design of the positioning structure can greatly simplify the assembly process of the single channel fluorescence detection device, improve the assembly efficiency, and reduce the labor assembly cost.

[0005] The technical means adopted by the utility model are as follows:

[0006] A " sandwich structure " single channel fluorescence detection device, comprising: a cell seat assembly, a shielding box, a shielding cover, a double convex lens and a double convex lens seat.

[0007] The cell seat assembly is a " 7 " shaped rectangular body, and the front surface has a through rectangular notch, the two stepped cylinders on the front surface are corresponding to the cylindrical hole and the straight slot hole on the front surface of the shielding cover, and the cylindrical hole and the rectangular slot of the boss are one-to-one corresponding to the corresponding structure on the front surface of the shielding cover.

[0008] The shielding box is a cuboid, and the front and side surfaces have different groove structures. The length direction and width direction grooves are matched with the rectangular boss of the shielding cover and other structures respectively, and the shielding cover is installed on the shielding box.

[0009] The shielding cover is a rectangular plate, and the hole and groove on the front and side surfaces are matched with the pool base assembly and the shielding box. After being installed on the pool base assembly, the shielding cover is connected with the shielding box.

[0010] The lenticular lens is installed in the large cylindrical hole of the through stepped hole of the lenticular lens seat. The lenticular lens seat is a cylinder, and the two opposite bosses of the end surface are inserted into the rectangular groove of the boss in the pool base assembly through the straight slot hole in the front surface of the shielding cover, so that the lenticular lens and the lenticular lens seat are positioned and fixed in the overall device, and the lenticular lens seat is installed on the structure composed of the pool base assembly and the shielding cover.

[0011] Further, the pool base assembly comprises a base, a circuit control assembly, an LED circuit assembly, a plano-convex lens, a plano-convex lens seat, a filter, a reflector, a PD circuit assembly, a dichroic mirror, a diaphragm, a lenticular lens, a lenticular lens square seat, and a gasket. One side surface of the "7" shaped cuboid in the length direction is two half cylindrical surfaces. One side surface of the cuboid in the width direction has a rectangular boss A. The boss A has a stepped cylindrical hole penetrating the inside of the base. The front surface of the boss A has a cylindrical hole. On both sides of the cylindrical hole, there are two rectangular grooves not penetrating the cylindrical hole, and one side of the rectangular groove is a cylindrical surface. Adjacent to the boss A, one side has a half cylindrical boss B located at the penetrating rectangular gap. On the other side surface of the cuboid, there is a half cylindrical boss C. On the front surface of the cuboid in the length direction, there are two stepped cylindrical bosses D.

[0012] Further, the front surface of the shielding box has a rectangular groove not penetrating the front surface. On the length direction of the two side surfaces, there are two rectangular grooves penetrating the front surface. On the width direction of one side surface, there is a rectangular groove. The shielding cover is a rectangular plate. On the front surface of the rectangular plate, there is a cylindrical hole and a straight slot hole corresponding to the boss D of the cylindrical boss of the pool base assembly. On the front surface of the rectangular plate, there is a cylindrical hole. On both sides of the cylindrical hole, there are two rectangular grooves penetrating the cylindrical hole. One side of the rectangular groove is a cylindrical surface, and corresponds to the cylindrical hole and the rectangular groove of the boss A in the pool base assembly. On the two side surfaces of the rectangular plate in the width direction, there are two rectangular bosses. One of the bosses has a rectangular groove penetrating the middle position of the boss, and communicates with the top surface of the boss. The other boss has two rectangular grooves penetrating the two side positions of the boss, and communicates with the top surface of the boss. On the two side surfaces of the rectangular plate in the length direction, there are two rectangular bosses E corresponding to the two rectangular grooves on the two side surfaces of the shielding box in the length direction.

[0013] Further, the lenticular lens seat is a cylinder, and a cylinder through step hole is formed in one end face, and two opposite bosses are formed in the end face, the lenticular lens is installed in the cylinder through step hole of the lenticular lens seat, and the two opposite bosses of the lenticular lens seat are inserted into the rectangular slot of the boss D of the pool seat assembly through the straight slot hole in the front face of the shielding cover; after the shielding cover is installed on the pool seat assembly, the shielding cover is installed on the shielding box.

[0014] Further, the lenticular lens and the lenticular lens seat are connected through threads, so that the lenticular lens is stably installed in the lenticular lens seat, and the position of the lenticular lens is adjusted.

[0015] Further, the connection between the shielding box and the shielding cover adopts a buckle structure, so that the shielding box and the shielding cover are quickly installed and disassembled.

[0016] Further, the shielding box and the shielding cover are made of stainless steel or aluminum alloy, and the lenticular lens seat is made of blackened aluminum alloy.

[0017] Compared with the prior art, the single-channel fluorescence detection device has the following advantages due to the adoption of the technical scheme:

[0018] 1. The single-channel fluorescence detection device with a "sandwich structure" has two installation modes, i.e., a front face and a side face, so that the device can adapt to various different use scenarios and system integration requirements, and the market application range of the device is greatly widened. The diversified installation mode avoids the problem that the single installation mode limits the use of the device, and the device does not need to be newly developed when facing different customer requirements, so that the development cycle of the single-channel fluorescence detection device is effectively reduced.

[0019] 2. The single-channel fluorescence detection device with a "sandwich structure" has an orderly and efficient assembly process, and can be assembled from top to bottom, so that the assembly process is significantly simplified. Compared with the traditional complex assembly mode, the assembly efficiency is improved, the assembly time and labor cost are reduced, and the product quality problem caused by improper assembly is also reduced.

[0020] 3. The single-channel fluorescence detection device with a "sandwich structure" has a compact overall structure, and the components are reasonably arranged. The "7" shaped design of the pool seat assembly and the ingenious connection between the components effectively reduce the space occupation, so that the device is small in size and light in weight, and is convenient to carry and operate. Meanwhile, the shielding box and the shielding cover are made of stainless steel or aluminum alloy, and the lenticular lens seat is made of blackened aluminum alloy. In this way, the structural strength is ensured, the electromagnetic interference is effectively shielded, the detection accuracy and stability are improved, and a good hardware foundation is provided for high-precision fluorescence detection.

[0021] Based on the above reasons, the utility model can popularize in the technical field of fluorescence detector. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0023] Figure 1 It is a single-channel fluorescence detection device structure schematic diagram of the " sandwich structure " of the utility model.

[0024] In the drawing: 1, pool seat assembly;2, shield box;3, shield cover;4, lenticular lens;5, lenticular lens seat. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, but not all the embodiments.The description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use.Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0027] It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the utility model.Unless the context clearly indicates otherwise, as used herein, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "contain" and / or "include" are used in the specification, it means that there is a feature, step, operation, device, component and / or its combination.

[0028] The foregoing description, for purposes of explanation, sets forth specific embodiments of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced in other embodiments that depart from the foregoing description. For example, while embodiments have been described above in the context of particular implementations in particular environments, those skilled in the art will recognize that the present application describes a number of applications, any or all of which can be used separately and / or in combination. Accordingly, the present application is not intended to be limited or defined by the foregoing description containing specific embodiments. Furthermore, a variety of changes can be made within the scope of the present application in addition to those described herein, without departing from the spirit and scope of the present application. Thus, it is intended that the present application not be limited to the foregoing aspects, but covers all such modifications as fall within the scope of the present application. In general, the present application can be further illustrated by the following examples, but the examples are not intended to limit the scope of the present application.

[0029] In the description of the present application, it is necessary to understand that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0030] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0031] In addition, it should be noted that the use of the words "first", "second" and the like to qualify parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0032] Example 1

[0033] As Figure 1 The utility model provides a kind of " sandwich structure " single-channel fluorescence detection device, comprising: pool seat component 1, shield box 2, shield cover 3, lenticular lens 4, lenticular lens seat 5;

[0034] The pool seat component 1 is by base, circuit control component, LED circuit component, plano-convex lens, plano-convex lens seat, optical filter, reflector, PD circuit component, dichroic mirror, diaphragm, lenticular lens, lenticular lens square seat, gasket is constituted;Pool seat component 1 is a cuboid, there is a through rectangular notch in the cuboid front, the cuboid is " 7 " character, the length direction of cuboid one side is two half cylindrical surface, there is a rectangular boss A in the width direction of cuboid one side, boss A has side and has a step cylindrical hole that is through inside base, the front of boss A has a cylindrical hole, there is a rectangular slot that is not through in the two sides of cylindrical hole, and one side of rectangular slot is cylindrical surface, immediately adjacent to boss A one side there is a half cylindrical boss B, located in through rectangular notch, there is a half cylindrical boss C in the other side of cuboid;There are two stepped cylindrical boss D in the front of cuboid length direction;

[0035] The shield box 2 is a cuboid, there is a rectangular slot that is not through in the cuboid front, there are two rectangular slots in the length direction of two sides respectively, and through in front, there is a rectangular slot in the width direction of one side;Shield cover 3 is a rectangular plate, there is a cylindrical hole and a straight slot hole in the front of rectangular plate, and the position of cylindrical boss D of pool seat component 1 one-to-one corresponds, there is a cylindrical hole in the front of rectangular plate, there is a rectangular slot that is through in the two sides of cylindrical hole, and one side of rectangular slot is cylindrical surface, and the cylindrical hole and rectangular slot of boss A in pool seat component 1 one-to-one correspond, there is a rectangular boss in the two sides of width direction of rectangular plate respectively, there is a rectangular slot that is through in the middle position of one boss, and it is communicated with the top surface of boss, there is a rectangular slot that is through in the two side positions of another boss, and it is communicated with the top surface of boss, there are two rectangular bosses E in the two sides of length direction of rectangular plate respectively, and the position of two rectangular slots of two sides of shield box 2 length direction one-to-one corresponds;

[0036] The lenticular lens seat 5 is a cylindrical, there is a cylindrical through step hole in one end face, there are two opposite bosses in the end face, lenticular lens 4 is installed in the larger cylindrical hole of the through step hole of lenticular lens seat 5, and the two opposite bosses of lenticular lens seat 5 are inserted into the rectangular slot of boss D in pool seat component 1 through the straight slot hole in the front of shield cover 3;Shield cover 3 is installed on pool seat component 1, and then shield cover 3 is installed on shield box 2.

[0037] The diameter of the cylindrical stepped cylindrical boss D of the pool base assembly 1 is 2 mm, the length of the shielding box 2 through the rectangular slot is 51 mm, the width is 40 mm, the length of the two rectangular slots on the two sides in the length direction is 10 mm, the length of the shielding cover 3 is 50.9 mm, the width is 39.93 mm, the length of the two rectangular bosses E on the two sides in the length direction is 9.95 mm, the diameter of the cylindrical hole on the front of the shielding cover 3 is 2.05 mm, the width of the straight slot hole is 2.05 mm, the diameter of the cylindrical surface of the rectangular slot through the two sides of the cylindrical hole on the front of the shielding cover 3 is 9 mm, the width is 2 mm, the diameter of the double convex lens 4 is 6.3 mm, the outer diameter of the double convex lens seat 5 is 8.95 mm, the width of the two opposite bosses of the double convex lens seat 5 is 1.96 mm, and the diameter of the cylindrical hole through the large step hole of the double convex lens seat 5 is 6.35 mm.

[0038] The material of the shielding box 2 and the shielding cover 3 is stainless steel, and the material of the double convex lens seat 5 is aluminum alloy.

[0039] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.

Claims

1. A single channel fluorescence detection device of "sandwich construction" characterised in that, It comprises: a pool base assembly (1), a shielding box (2), a shielding cover (3), a lenticular lens (4), and a lenticular lens seat (5); the pool base assembly (1) is a "7" shaped cuboid, and has a through rectangular notch on the front face, two stepped cylindrical faces on the front face corresponding to the cylindrical hole and straight slot hole on the front face of the shielding cover (3), and a cylindrical hole and a rectangular slot on the boss corresponding to the structure on the front face of the shielding cover (3); the shielding box (2) is a cuboid, and has different slot structures on the front face and side face, and the length direction and width direction slots are matched with the rectangular boss of the shielding cover (3), and the shielding cover (3) is installed on the shielding box (2); the shielding cover (3) is a rectangular plate, and the hole and slot on the front face and side face correspond to the pool base assembly (1) and the shielding box (2), and is installed on the pool base assembly (1) and then connected with the shielding box (2); the lenticular lens (4) is installed in the large cylindrical hole of the through stepped hole of the lenticular lens seat (5), the lenticular lens seat (5) is a cylindrical shape, and the two opposite bosses on the end face are inserted into the rectangular slot of the boss in the pool base assembly (1) through the straight slot hole on the front face of the shielding cover (3), so that the lenticular lens (4) and the lenticular lens seat (5) are positioned and fixed in the overall device, and the lenticular lens seat (5) is installed on the structure composed of the pool base assembly (1) and the shielding cover (3).

2. A single channel fluorescence detection device of "sandwich construction" according to claim 1, characterised in that, The pool base assembly (1) comprises a base, a circuit control assembly, an LED circuit assembly, a plano-convex lens, a plano-convex lens seat, a filter, a reflector, a PD circuit assembly, a dichroic mirror, a diaphragm, a lenticular lens, a lenticular lens square seat, and a gasket; one side face of the "7" shaped cuboid in the length direction is two half cylindrical faces, one side face in the width direction of the cuboid has a rectangular boss A, the boss A has a stepped cylindrical hole penetrating the inside of the base, the front face of the boss A has a cylindrical hole, and each side of the cylindrical hole has a rectangular slot not penetrating and communicating with the cylindrical hole, and one side of the rectangular slot is a cylindrical face, one side close to the boss A has a half cylindrical boss B located at the through rectangular notch, and one side of the other side face of the cuboid has a half cylindrical boss C; the front face in the length direction of the cuboid has two stepped cylindrical bosses D.

3. A single channel fluorescence detection device of "sandwich construction" according to claim 1, characterized in that The shielding box has a non-through rectangular slot on the front face, two rectangular slots on the length direction sides, respectively, and two rectangular slots through the front face, and one rectangular slot on the width direction side; the shielding cover (3) is a rectangular plate, has a cylindrical hole and a straight slot hole on the front face, and corresponds to the cylindrical boss D of the pool base assembly (1), has a cylindrical hole on the front face, and has a through rectangular slot on each side of the cylindrical hole, one side of the rectangular slot is a cylindrical surface, and corresponds to the cylindrical hole and the rectangular slot of the boss A of the pool base assembly (1), has a rectangular boss on each of the two width direction sides of the rectangular plate, one of the bosses has a through rectangular slot in the middle position and communicates with the top surface of the boss, and the other boss has a through rectangular slot on each of the two side positions and communicates with the top surface of the boss, and the two length direction sides of the rectangular plate have two rectangular bosses E, respectively, which correspond to the two rectangular slots on the two length direction sides of the shielding box (2).

4. A single channel fluorescence detection device of "sandwich construction" according to claim 1, characterized in that The lenticular lens seat (5) is a cylindrical shape, has a cylindrical through stepped hole on one end face, and has two opposite bosses on the end face, the lenticular lens (4) is installed in the larger cylindrical hole of the through stepped hole of the lenticular lens seat (5), and the two opposite bosses of the lenticular lens seat (5) are inserted into the rectangular slot of the boss D of the pool base assembly (1) through the straight slot hole on the front face of the shielding cover (3); after the shielding cover (3) is installed on the pool base assembly (1), the shielding cover (3) is installed on the shielding box (2).

5. A single channel fluorescence detection device of "sandwich construction" according to claim 1, characterized in that The lenticular lens (4) and the lenticular lens seat (5) are connected through threads, which ensures the stable installation of the lenticular lens (4) in the lenticular lens seat (5) and facilitates the adjustment of the position of the lenticular lens (4).

6. A single channel fluorescence detection device of "sandwich construction" according to claim 1, characterized in that The connection between the shielding box (2) and the shielding cover (3) adopts a buckle structure, which facilitates quick installation and disassembly.

7. A single channel fluorescence detection device of "sandwich construction" according to claim 1, characterized in that The materials of the shielding box (2) and the shielding cover (3) are stainless steel or aluminum alloy, and the material of the lenticular lens seat (5) is blackened aluminum alloy.

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