Single-channel fluorescence detection pool seat assembly

Abstract

The utility model provides a single-channel fluorescence detection pool seat assembly. The single-channel fluorescence detection pool seat assembly comprises a base, a circuit control assembly, an LED circuit assembly, a plano-convex lens, a plano-convex lens seat, an optical filter, a reflective mirror, a PD circuit assembly, a dichroscope, a diaphragm, a biconvex lens square seat, a gasket, a biconvex lens and a cover plate, the base is provided with various structures such as grooves, holes and bosses for installing all components, the circuit control assembly is installed on the back face of the base, and other components are installed in the corresponding grooves respectively. The assembly can be provided with LED excitation light sources with two wavelengths, the collecting lens has two installation modes, two dichroscopes are used for achieving secondary light filtering and light path folding, the light path is folded, the LED is placed in the focus of the lens, the light parallelism is guaranteed, meanwhile, the distance between the LED and the lens is shortened, and the space utilization rate is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluorescent detector technical field, specifically, especially, a kind of single channel fluorescence detection pool seat subassembly. BACKGROUND

[0002] As a kind of photoluminescence detection technology, fluorescence detector is a kind of detector with high selectivity and ultra-high sensitivity, and has an important position in ultra-trace molecular level detection. With the development of science and technology, there are special requirements for the weight and size of instruments and equipment, which further promotes the development of fluorescence detection equipment to miniaturization and micro-miniaturization.

[0003] However, the current fluorescence detection technology still has some problems. On the one hand, only the change of light emitting intensity of light source itself can be corrected, which may lead to inaccurate detection results in complex detection environment. For example, when the illumination condition of external environment changes, the accurate reading of fluorescence signal may be affected due to the inability to effectively correct the interference of external light. On the other hand, the detection method by switching two light paths to generate excitation light of different wavelengths also has disadvantages. Using a dichroic mirror to split light cannot perform secondary filtering, which may allow stray light to enter the detection system and reduce the signal-to-noise ratio of detection. Moreover, the distance between LED shaping lens and LED is large, which increases the volume of space and does not meet the development trend of equipment miniaturization and micro-miniaturization. In addition, a single lens is used as a converging lens for 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] According to the above technical problem, a single channel fluorescence detection pool seat subassembly is provided. The utility model can install two specifications of excitation light source to adapt to fluorescence detection of different wave bands of different samples to be measured, the collecting lens has two installation modes of front and side to meet various market demands and reduce the development cycle of single channel fluorescence detection device; the reference PD is located at the end of the excitation light path, and the excitation light after filtering and dichroic mirror can be more comprehensive and accurate to correct the excitation light intensity; two dichroic mirrors are used to realize secondary filtering and fold the light path to reduce the volume and improve the space utilization rate, and each channel has its own converging lens, the light beam shaping effect is more controllable, and the effect is better.

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

[0006] A single channel fluorescence detection pool seat subassembly 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, an aperture, a double-convex lens square seat, a gasket, a double-convex lens and a cover plate.

[0007] The base is a special-shaped cuboid, provided with a plurality of through or non-through grooves, holes, bosses and blind grooves for mounting other components, and the back surface is provided with three stepped cylindrical bosses for mounting the circuit control component;

[0008] The circuit control component is mounted on the stepped cylindrical bosses on the back surface of the base;

[0009] The LED circuit component is a stepped cuboid, which can be mounted in the rectangular groove II or rectangular groove III of the base, and the cylindrical surface of the LED can be mounted in the corresponding semicircular hole M or semicircular hole N;

[0010] The plano-convex lens is mounted in the stepped hole large cylindrical hole of the plano-convex lens seat, and the plano-convex lens seat is mounted in the rectangular groove IV of the base;

[0011] The filter is a cuboid, which is mounted in the rectangular groove V, rectangular groove VII and rectangular groove XIII of the base;

[0012] The reflector is a cuboid, which is mounted on the triangular groove bevel surface of the two side surfaces of the rectangular groove XV of the base;

[0013] The PD circuit component is a stepped cuboid, which is mounted in the rectangular groove VIII and rectangular groove X of the base;

[0014] The dichroic mirror is a cuboid, which is mounted in the rectangular groove VI and rectangular groove XIV of the base;

[0015] The diaphragm is a cuboid, which has a cylindrical hole on the plane, and is mounted in the rectangular groove XI of the base;

[0016] The lenticular lens square seat is a cuboid, which has a through stepped hole on the front surface, and the lenticular lens is mounted in the large cylindrical hole thereof, and the lenticular lens square seat is mounted in the rectangular groove XII of the base;

[0017] The gasket is used for cooperation and installation with the filter in the rectangular groove XIII;

[0018] The cover plate is a special-shaped cuboid, which is cooperatively mounted with the base, and the front surface is provided with a through hole, a boss, a cylindrical hole and a groove which are cooperatively matched with the corresponding structures of the base.

[0019] Further, the width of the large cuboid of the LED circuit component is L LED , the outer diameter of the LED at the positioning position is D LED , the length of the plano-convex lens seat is L 平凸 , the axial distance of the stepped hole on the front surface of the plano-convex lens seat from the bottom surface of the rectangular groove I of the base is H 平凸 , the length of the filter is L 滤光片 , the length of the reflector is L 反光镜 , and the length of the PD circuit component is LPD The distance between the center of the PD and the bottom of the rectangular slot I is H PD The length of the dichroic mirror is L 二向色镜 The length of the diaphragm is L 光阑 The distance between the center of the cylindrical hole on the diaphragm and the bottom of the rectangular slot I is H 光阑 The length of the biconvex lens is L 双凸 The distance between the center of the step hole and the bottom of the rectangular slot I is H 双凸 .

[0020] Further, the length of the large slot in the stepped rectangular slot II is L2, and L LED <L2<L LED +0.1; the length of the large slot in the rectangular slot III is L3, and L LED <L3<L LED +0.1; the length of the rectangular slot IV is L4, and L 平凸 <L4<L 平凸 +0.1; the length of the rectangular slot V is L5, and L 滤光片 <L5<L 滤光片 +0.1; the length of the rectangular slot XIII is L 13 , and L 滤光片 <L 13 <L 滤光片 +0.1; the length of the rectangular slot XV is L 15 The angle between the hypotenuse of the triangular recess of the rectangular slot XV and the front face of the rectangular slot XV is 45°, and L 反光镜 <L 15 <L 反光镜 +0.1; the length of the large slot in the rectangular slot VIII is L8, and L PD <L8<L PD +0.1; the length of the large slot in the rectangular slot X is L 10 , and L PD <L 10 <L PD +0.1; the length of the rectangular slot VI is L6, and L 二向色镜 <L6<L 二向色镜 +0.1; the length of the rectangular slot XIV is L 14 , and L 二向色镜 <L 14 <L 二向色镜 +0.1; the length of the rectangular slot XI is L 11 , and L 光阑 <L 11 <L 光阑 +0.1; the length of the rectangular slot XII is L 12 , and L 双凸 <L 11 <L双凸 +0.1; the half-round hole M on the side of the pedestal (101) has a diameter D M , and D LED <D M <D LED +0.1; the distance H between the bottom of the half-round hole M and the rectangular slot I of the pedestal (101) M , and H M =H 平凸 =H PD =H 光阑 =H 双凸 .

[0021] Further, the collecting lens has two installation modes of front and side, and is located at the cylindrical hole on the front of the cover plate convex D when installed in front, and is located at the stepped hole on the side of the pedestal convex A when installed in side.

[0022] Further, the assembly can install LED excitation light sources of two different wavelengths.

[0023] Further, the cover plate and the pedestal are made of PC or ABS or aluminum alloy material, which can provide light weight structure and excellent mechanical strength, and reserve fiber interfaces on both sides to realize input and output of optical signals.

[0024] Further, the design of the assembly supports modular assembly, and each functional component can be quickly replaced.

[0025] Compared with the prior art, the utility model has the following advantages due to the adoption of the above technical scheme:

[0026] 1. The single-channel fluorescence detection pool seat assembly has compact structure, small size and light weight, can install LED excitation light sources of two different wavelengths, can adapt to different waveband spectrum detection of different samples to be measured, the collecting lens has two installation modes of front and side, and effectively meets various market demands, and significantly reduces the development cycle of the single-channel fluorescence detection device.

[0027] 2. The single-channel fluorescence detection pool seat assembly greatly simplifies the assembly process of the single-channel fluorescence detection device, thereby greatly improving the assembly efficiency and effectively reducing the production cost.

[0028] 3. The single-channel fluorescence detection cell seat assembly provided by the utility model has two dichroic mirrors, realizes secondary filtering function, folds the light path, reduces the overall size, and improves the space utilization rate. Each channel is equipped with its own converging lens, the light beam shaping effect is easier to control, the detection effect is better, the reference PD is located at the end of the excitation light path, the excitation light after the optical filter and the dichroic mirror can be collected, and the excitation light intensity can be corrected more comprehensively and accurately.

[0029] Based on the above reasons, the utility model can be popularized in the field of fluorescence detector technology. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below, and 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.

[0031] Fig. 1 It is a single-channel fluorescence detection cell seat assembly structure schematic view of the utility model;

[0032] Fig. 2 It is a single-channel fluorescence detection cell seat assembly cover plate schematic view of the utility model;

[0033] Fig. 3 It is a single-channel fluorescence detection cell seat assembly base structure schematic view of the utility model.

[0034] In the drawing: 101, base; 102, circuit control assembly; 103, LED circuit assembly; 104, plano-convex lens; 105, plano-convex lens seat; 106, optical filter; 107, reflector; 108, PD circuit assembly; 109, dichroic mirror; 110, diaphragm; 111, biconvex lens square seat; 112, gasket; 113, biconvex lens; 114, cover plate. DETAILED DESCRIPTION

[0035] 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.

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0038] Unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not meant to limit the scope of the present application. At the same time, it should be clear that the sizes of the various parts shown in the drawings are not drawn in proportion. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0039] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular 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.

[0040] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0041] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the restriction of the scope of protection of the utility model.

[0042] Embodiment 1

[0043] As Figs. 1 to 3 The utility model provides a single channel fluorescence detection cell seat subassembly, include: base 101, circuit control subassembly 102, LED circuit subassembly 103, flat convex lens 104, flat convex lens seat 105, optical filter 106, reflector 107, PD circuit subassembly 108, dichroic mirror 109, diaphragm 110, double convex lens square seat 111, gasket 112, double convex lens 113, cover plate 114 are constituteed;

[0044] The base 101 is a cuboid, and a through rectangular gap is formed on the front face of the cuboid. The cuboid is in the shape of "7", and one side of the cuboid in the length direction is two semi-cylindrical faces. The front face adjacent to the two semi-cylindrical faces has a blind hole respectively, and the position adjacent to the blind hole has a blind groove in the shape of "7" respectively. One side of the cuboid in the width direction has a rectangular boss A, and the side adjacent to the boss A has a semi-cylindrical boss B located at the through rectangular gap. The front face of the boss B has a blind hole, and the position adjacent to the blind hole has a straight slot which is not punched. The other side of the cuboid has a semi-cylindrical boss C, and the front face of the boss C has a blind hole, and the position adjacent to the blind hole has a straight slot which is not punched.The front of the base 101 has a length direction through, the height direction is not through the rectangular slot I, the rectangular slot I has a rectangular slot II on one side, and the small rectangular slot is through, and the rectangular slot II is adjacent to the rectangular boss A in the rectangular slot I. The side of the rectangular boss A has a semicircular hole M, and the rectangular boss A is adjacent to the rectangular slot III, and the small rectangular slot is through. The rectangular boss B is adjacent to the rectangular slot III in the rectangular slot I, and the side of the rectangular boss B has a semicircular hole N. The side of the rectangular boss B has a rectangular boss C in the rectangular slot I, and the side of the rectangular boss C has a rectangular slot IV. The side of the rectangular slot IV is adjacent to the rectangular slot V, and the side of the rectangular slot V is adjacent to the triangular boss D in the rectangular slot I. The side of the triangular boss D is adjacent to the rectangular slot VI, and the rectangular slot VI is adjacent to the rectangular boss E in the rectangular slot I. The side of the boss E has a rectangular slot VII, and the rectangular boss F is adjacent to the rectangular slot VII in the rectangular slot I. The side of the boss F has a rectangular slot VIII, and the small rectangular slot is through. The front of the base 101 is adjacent to the side of the boss C and has a rectangular slot IX which is not through in the length direction and the height direction, and the rectangular slot IX is a quarter of a cylindrical surface on the side away from the boss C in the length direction. The side of the rectangular slot IX has a rectangular slot X which is adjacent to the rectangular slot II, and the small rectangular slot is through. The rectangular boss G is adjacent to the rectangular slot II in the rectangular slot IX, and the rectangular boss G is adjacent to the rectangular slot XI. The rectangular boss H is adjacent to the rectangular slot XI in the rectangular slot IX, and the rectangular boss I is adjacent to the rectangular boss H in the rectangular slot IX. The rectangular boss J is adjacent to the rectangular slot XII, and the rectangular slot XIII is adjacent to the rectangular slot XII. The triangular boss J is adjacent to the rectangular slot XIII in the rectangular slot IX, and the rectangular slot XIV is adjacent to the triangular boss J on one side. The front of the base 101 has a rectangular slot XV which is through the rectangular slot I and the rectangular slot IX, and the rectangular slot XV has a triangular recess on both sides. The side of the boss A has a step hole which is through the rectangular slot XV. The boss K is formed along the edge of the rectangular slot I, the rectangular slot IX and the rectangular slot XV on the front of the base 101. The back of the base 101 has three step-shaped cylindrical bosses. The circuit control assembly 102 is installed on the three step-shaped cylindrical bosses on the back of the base 101. The LED circuit assembly 103 is a ladder-shaped rectangular body, and is installed in the rectangular slot II. The cylindrical surface of the LED is installed in the semicircular hole M.The flat-convex lens seat 105 is a cuboid, and the cuboid has a through stepped hole in the front face. The flat-convex lens 104 is installed in the large cylindrical hole of the stepped hole of the flat-convex lens seat 105. The flat-convex lens seat 105 is installed in the rectangular groove IV. The light filter 106 is a cuboid, and is installed in the rectangular groove V and the rectangular groove VII. The light filter 106, the gasket 112 and the light filter 106 are installed in the rectangular groove XIII in sequence. The reflector 107 is a cuboid, and is installed on the inclined edge face of the triangular groove of the two side faces of the rectangular groove XV. The PD circuit assembly 108 is a stepped cuboid, and is installed in the rectangular groove VIII and the rectangular groove XIII. The dichroic mirror 109 is a cuboid, and is installed in the rectangular groove VI and the rectangular groove XIV. The diaphragm 110 is a cuboid, and has a cylindrical hole in the plane of the cuboid. The diaphragm 110 is installed in the rectangular groove XI. The double-convex lens square seat 111 is a cuboid, and the cuboid has a through stepped hole in the front face. The double-convex lens 113 is installed in the large cylindrical hole of the stepped hole of the double-convex lens square seat 111. The double-convex lens square seat 111 is installed in the rectangular groove XII.

[0045] The cover plate 114 is a cuboid, and the cuboid has a through rectangular notch in the front face. The cuboid is in the shape of "7". One side face of the cuboid in the length direction is two semi-cylindrical faces. The front face close to the two semi-cylindrical faces has a through stepped hole and a through cylindrical hole. One side face of the cuboid in the width direction has a rectangular boss D. The front face of the boss D has a through cylindrical hole, and the collecting lens is installed on the front face of the boss D. Two non-through rectangular grooves are formed on both sides of the cylindrical hole, and one side face of the rectangular groove is a cylindrical face. One side close to the boss D has a semi-cylindrical boss E, and the boss E is located at the through rectangular notch. The front face of the boss E has a through cylindrical hole. One side face of the cuboid has a semi-cylindrical boss F. The front face of the boss F has a through stepped hole. The cuboid has two cylindrical bosses G in the front face. The positions corresponding to the bosses K of the base 101 have grooves with the same shape. The cover plate 114 is installed on the base 101.

[0046] The width of the LED circuit assembly 103 is 8.2mm, the outer diameter of the position where the LED is positioned is 4.7mm, the length of the plano-convex lens seat 105 is 9mm, the distance between the axis of the stepped hole penetrating the front surface of the plano-convex lens seat 105 and the bottom surface of the rectangular groove I of the base 101 is 4mm, the length of the filter 106 is 8mm, the length of the reflector 107 is 9mm, the length of the PD circuit assembly 108 is 8mm, the distance between the center of the PD and the bottom surface of the rectangular groove I of the base 101 is 4mm, the length of the dichroic mirror 109 is 14mm, the length of the diaphragm 110 is 8mm, the distance between the axis of the cylindrical hole on the cuboid plane of the diaphragm 110 and the bottom surface of the rectangular groove I of the base 101 is 4mm, the length of the biconvex lens square seat 111 is 9mm, and the distance between the axis of the stepped hole penetrating the front surface and the bottom surface of the rectangular groove I of the base 101 is 4mm.

[0047] The length of the large groove in the stepped rectangular groove II of the base 101 is 8.05mm, the length of the large groove in the rectangular groove III is 8.06mm, the length of the rectangular groove IV is 9.07mm, the length of the rectangular groove V is 8.05mm, the length of the rectangular groove XIII is 8.03mm, the length of the rectangular groove XV is 9.02mm, the angle between the inclined side surface of the triangular groove in the rectangular groove XV and the front surface of the rectangular groove XV is 45°, the length of the large groove in the rectangular groove VIII is 8.05mm, the length of the large groove in the rectangular groove X is 8.09mm, the length of the rectangular groove VI is 14.02mm, the length of the rectangular groove XIV is 14.03mm, the length of the rectangular groove XI is 8.06mm, the length of the rectangular groove XII is 9.03mm, the base 101 has a semicircular hole M with a diameter of 4.75mm on the side surface of the boss A, and the distance between the bottom surface of the semicircular hole M and the bottom surface of the rectangular groove I of the base 101 is 4mm.

[0048] The material of the base 101 and the cover plate 114 is PC or ABS.

[0049] Example 2

[0050] The LED circuit assembly 103 is installed into the rectangular groove III at the stepped hole of the convex side of the collecting lens mounting base 101, and the cylindrical surface of the LED is installed into the semicircular hole N, the width of the large cuboid of the LED circuit assembly 103 is 9mm, the outer diameter of the position where the LED can be positioned is 4mm, the length of the flat convex lens seat 105 is 9mm, the axial distance of the stepped hole penetrating through the front surface of the flat convex lens seat 105 to the bottom surface of the rectangular groove I of the base 101 is 4.5mm, the length of the light filter 106 is 9mm, the length of the PD circuit assembly 108 is 9mm, the axial distance of the cylindrical hole on the cuboid plane of the diaphragm 110 to the bottom surface of the rectangular groove I of the base 101 is 4.5mm, the length of the biconvex lens square seat 111 is 9mm, the axial distance of the stepped hole penetrating through the front surface to the bottom surface of the rectangular groove I of the base 101 is 4.5mm;

[0051] The length of the large groove in the stepped rectangular groove II of the base 101 is 9.08mm, the length of the large groove in the rectangular groove III is 9.02mm, the length of the rectangular groove IV is 9.07mm, the length of the rectangular groove V is 9.05mm, the length of the rectangular groove XIII is 9.05mm, the length of the rectangular groove XV is 9.08mm, the included angle between the oblique edge surface of the triangular groove of the rectangular groove XV and the front surface of the rectangular groove XV is 45°, the length of the large groove in the rectangular groove VIII is 9.01mm, the length of the large groove in the rectangular groove X is 9.03mm, the length of the groove in the rectangular groove VI is 15.03mm, the length of the groove in the rectangular groove XIV is 15.05mm, the length of the rectangular groove XI is 9.06mm, the length of the rectangular groove XII is 9.03mm, the diameter of the semicircular hole M on the convex side A of the base 101 is 4.03mm, and the distance from the bottom surface of the rectangular groove I of the base 101 to the bottom surface of the semicircular hole M is 4.5mm;

[0052] The material of the base 101 and the cover plate 114 is aluminum alloy.

[0053] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but 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 embodiments of the present application.

Claims

1. A single channel fluorescence detection cell block assembly, characterized by, It comprises: a base (101), a circuit control component (102), an LED circuit component (103), a plano-convex lens (104), a plano-convex lens seat (105), a filter (106), a reflector (107), a PD circuit component (108), a dichroic mirror (109), a diaphragm (110), a lenticular lens square seat (111), a gasket (112), a lenticular lens (113), a cover plate (114); the base (101) is a special-shaped cuboid, provided with a plurality of through or non-through grooves, holes, bosses and blind grooves for mounting other components, and a back surface provided with three stepped cylindrical bosses for mounting the circuit control component (102); the circuit control component (102) is mounted on the stepped cylindrical bosses on the back surface of the base (101); the LED circuit component (103) is a stepped cuboid, which can be mounted in the rectangular groove II or rectangular groove III of the base (101), and the cylindrical surface of the LED can be mounted in the corresponding semicircular hole M or semicircular hole N; the plano-convex lens (104) is mounted in the stepped hole large cylindrical hole of the plano-convex lens seat (105), and the plano-convex lens seat (105) is mounted in the rectangular groove IV of the base (101); the filter (106) is a cuboid, which is mounted in the rectangular groove V, rectangular groove VII and rectangular groove XIII of the base (101); the reflector (107) is a cuboid, which is mounted on the triangular groove inclined edge surface of the two side surfaces of the rectangular groove XV of the base (101); the PD circuit component (108) is a stepped cuboid, which is mounted in the rectangular groove VIII and rectangular groove X of the base (101); the dichroic mirror (109) is a cuboid, which is mounted in the rectangular groove VI and rectangular groove XIV of the base (101); the diaphragm (110) is a cuboid, which has a cylindrical hole on the plane and is mounted in the rectangular groove XI of the base (101); the lenticular lens square seat (111) is a cuboid, which has a through stepped hole on the front surface, and the lenticular lens (113) is mounted in the large cylindrical hole thereof, and the lenticular lens square seat (111) is mounted in the rectangular groove XII of the base (101); the gasket (112) is used for cooperating with the filter (106) to be mounted in the rectangular groove XIII; the cover plate (114) is a special-shaped cuboid, which is cooperatively mounted with the base (101), and the front surface thereof is provided with through holes, bosses, cylindrical holes and grooves corresponding to the structures of the base (101).

2. A single channel fluorescence detection cell block assembly according to claim 1, wherein, The width of the LED circuit assembly (103) is L LED The outer diameter of the position where the LED is positioned is D LED The length of the plano-convex lens seat (105) is L 平凸 The distance between the axis of the stepped hole penetrating the front surface of the plano-convex lens seat (105) and the bottom surface of the rectangular slot I of the base (101) is H 平凸 The length of the optical filter (106) is L 滤光片 The length of the reflector (107) is L 反光镜 The length of the PD circuit assembly (108) is L PD The distance between the center of the PD and the bottom surface of the rectangular slot I of the base (101) is H PD The length of the dichroic mirror (109) is L 二向色镜 The length of the diaphragm (110) is L 光阑 The distance between the axis of the cylindrical hole on the rectangular plane of the diaphragm (110) and the bottom surface of the rectangular slot I of the base (101) is H 光阑 The length of the biconvex lens square seat (111) is L 双凸 The distance between the axis of the stepped hole penetrating the front surface and the bottom surface of the rectangular slot I of the base (101) is H 双凸 .

3. A single channel fluorescence detection cell block assembly according to either of claims 1 and 2, wherein, The base (101) is a stepped rectangular slot II, the length of the large slot is L2, and L LED <L2<L LED +0.1; the length of the rectangular slot III is L3, and L LED <L3<L LED +0.1; the length of the rectangular slot IV is L4, and L 平凸 <L4<L 平凸 +0.1; the length of the rectangular slot V is L5, and L 滤光片 <L5<L 滤光片 +0.1; the length of the rectangular slot XIII is L 13 , and L 滤光片 <L 13 <L 滤光片 +0.1; the length of the rectangular slot XV is L 15 , the angle between the hypotenuse face of the triangular groove of the rectangular slot XV and the front face of the rectangular slot XV is 45°, and L 反光镜 <L 15 <L 反光镜 +0.1; the length of the large slot in the rectangular slot VIII is L8, and L PD <L8<L PD +0.1; the length of the large slot in the rectangular slot X is L 10 , and L PD <L 10 <L PD +0.1; the length of the rectangular slot VI is L6, and L 二向色镜 <L6<L 二向色镜 +0.1; the length of the rectangular slot XIV is L 14 , and L 二向色镜 <L 14 <L 二向色镜 +0.1; the length of the rectangular slot XI is L 11 , and L 光阑 <L 11 <L 光阑 +0.1; the length of the rectangular slot XII is L 12 , and L 双凸 <L 11 <L 双凸 +0.1; the base (101) has a semicircular hole M on the side of the boss A, the diameter of the semicircular hole M is D M , and D LED <D M <D LED +0.1; the distance from the semicircular hole M to the bottom face of the rectangular slot I of the base (101) is H M , and H M =H 平凸 =H PD =H 光阑 =H 双凸 .

4. The single-channel fluorescence detection cell block assembly of claim 1, wherein, The components can mount two different wavelength LED excitation light sources.

5. The single-channel fluorescence detection cell block assembly of claim 1, wherein, The cover plate (114) and the base (101) are made of PC or ABS or aluminum alloy material, which can provide lightweight structure and excellent mechanical strength at the same time, and reserve fiber interfaces on both sides to realize the input and output of optical signals.

6. A single channel fluorescence detection cell block assembly according to claim 1, wherein, The design of the components supports modular assembly, and each functional part can be quickly replaced.

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