Optical fiber locator and positioning method thereof

Abstract

The present disclosure provides a fiber optic locator and a positioning method thereof, wherein the fiber optic locator comprises: a mechanical body, a fiber optic assembly, a rotating assembly, and a lens assembly, wherein the mechanical body is an integral body composed of a hollow cylinder, an annular baffle, and an annular platform with a preset number of grooves; the fiber optic assembly comprises a fiber optic mechanical part and an optical fiber, and the fiber optic assembly has at least an external shape that is complementary to the inner wall shape of the hollow cylinder; the rotating assembly comprises a rotating handle and at least one pressing block, and the fiber optic assembly has at least an external shape that is complementary to the shape of the pressing block; the lens assembly comprises a mechanical cylinder and a lens. The fiber optic assembly is double-positioned by the inner wall of the mechanical body and the annular baffle, and the fiber optic assembly is further fixed between the pressing block and the annular baffle to achieve precise positioning of the fiber optic assembly; the pressing block is driven to move by the rotation of the rotating handle, so that the fiber optic assembly can be quickly installed and positioned.

Description

Technical Field

[0001] The present disclosure relates to the field of optical technology, and in particular to an optical fiber locator and a positioning method thereof. Background Art

[0002] As an efficient and low-loss transmission medium, optical fiber has been widely used in the fields of communication, medical treatment, sensing, etc., and can achieve high-quality data transmission and image transmission. Microscopic imaging technology irradiates the excitation light to the surface of an object through an optical fiber or optical fiber bundle, and collects the reflected light or laser fluorescence for imaging analysis. However, in practical applications, the use and coupling process of optical fibers require extremely high precision, especially in terms of axial distance and angle. This high-precision requirement mainly comes from the precise docking between the optical fiber end faces to ensure the maximum transmission efficiency of the optical signal.

[0003] Although there are many methods and devices for optical fiber coupling in the prior art, most of these methods are costly and complex to operate, making them difficult to implement on a large scale. Therefore, how to achieve efficient and low-cost optical fiber coupling has become one of the important issues to be solved. In particular, in some cost-sensitive application scenarios, such as low-cost medical imaging equipment, the limitations of existing technologies are particularly prominent. This also limits the widespread application of optical fiber in certain occasions to a certain extent, especially in applications that require frequent replacement or adjustment of optical fiber connections. Summary of the invention

[0004] The present invention provides an optical fiber positioner to solve the problems of the optical fiber positioner in the prior art that the optical fiber positioner needs to be precisely adjusted, has a complex structure, and is difficult to quickly install and disassemble. The rotation of the handle drives the pressing block to move closer to or away from the optical fiber assembly to achieve the positioning of the optical fiber assembly.

[0005] In a first aspect, the present disclosure provides a fiber optic positioner, the fiber optic positioner comprising: a mechanical body, a fiber optic assembly, a rotating assembly, and a lens assembly, wherein:

[0006] The mechanical body is a whole composed of a hollow cylinder, an annular baffle, and an annular platform with a preset number of grooves. One end of the mechanical body is used to fix the optical fiber assembly, and the other end is used to fix the lens assembly.

[0007] The optical fiber assembly includes an optical fiber mechanical part and an optical fiber, wherein the optical fiber mechanical part is used to fix the axial position of the optical fiber assembly on the mechanical body, the optical fiber is used to transmit the excitation light, and the optical fiber assembly has at least an external shape that is complementary to the inner wall shape of the hollow cylinder;

[0008] The rotating assembly includes a rotating handle and at least one pressing block, wherein the rotating handle is used to control the movement of the pressing block, the pressing block is used to fix the optical fiber assembly above the annular baffle of the mechanical body, and the optical fiber assembly has at least an external shape that is complementary to the shape of the pressing block;

[0009] The lens assembly includes a mechanical cylinder and a lens, and the lens is used to couple the excitation light to the surface of the optical fiber and collect the reflected light or fluorescence transmitted back by the optical fiber.

[0010] According to a fiber optic locator provided in the present disclosure, the annular baffle is fixed on the inner side of the hollow cylinder, the annular platform is fixed on the outer side of the hollow cylinder, and the preset number of grooves are evenly distributed on the upper surface of the annular platform; the inner wall shape of the hollow cylinder at least includes: a continuous first curved surface inclined at a first angle and presented on one side of the annular baffle.

[0011] According to a fiber optic positioner provided in the present disclosure, the optical fiber is located on the central axis of the fiber optic mechanical component, and the optical fiber assembly has at least an external shape that is complementary to the inner wall shape of the hollow cylinder, including: a continuous second curved surface inclined at a first angle and with a reduced diameter, and the maximum diameter of the second curved surface is smaller than the maximum diameter of the first curved surface.

[0012] According to a fiber optic positioner provided by the present disclosure, the pressing block is a wedge-shaped structure with a first inclined surface, and the optical fiber assembly has at least an external shape complementary to the shape of the pressing block, including: a continuous third curved surface inclined at a second angle and with a reduced diameter; a continuous fourth curved surface inclined at a second angle and with an increased diameter; wherein the second angle is determined according to the shape of the pressing block, and the fourth curved surface is symmetrically distributed with the third curved surface in the vertical direction.

[0013] According to a fiber optic positioner provided by the present disclosure, the at least one pressing block is respectively placed in at least one groove among the preset number of grooves, the rotating handle is installed above the annular platform of the mechanical body and is fully coupled with the at least one pressing block, and the rotating handle is used to control the movement of the pressing block, specifically including: rotating the rotating handle counterclockwise to control the at least one pressing block to move inward; rotating the rotating handle clockwise to control the at least one pressing block to move outward.

[0014] According to a fiber optic locator provided by the present disclosure, the lower surface of the rotating handle is an internal thread that spreads outward in a counterclockwise direction, and the preset area on the upper surface of the pressing block is an external thread; the rotating handle is fully coupled with the at least one pressing block, including: the internal thread of the rotating handle is coupled with the external thread of the at least one pressing block.

[0015] According to a fiber optic positioner provided in the present disclosure, the lower surface of the rotating handle is at least one arc-shaped groove, the upper surface of the pressure block is provided with a protrusion, and the number of the arc-shaped grooves is the same as the number of the pressure blocks; the rotating handle is fully coupled with the at least one pressure block, including: at least one arc-shaped groove of the rotating handle is coupled with the protrusion of the at least one pressure block.

[0016] According to a fiber optic positioner provided by the present disclosure, the hollow cylinder includes at least one screw hole, and the at least one screw hole is used to fix the lens assembly.

[0017] In a second aspect, the present disclosure provides a positioning method for an optical fiber locator, the method comprising:

[0018] Placing the optical fiber assembly above the annular baffle of the mechanical body; wherein the optical fiber assembly at least has an external shape that is complementary to the inner wall shape of the hollow cylinder in the mechanical body, and the optical fiber assembly also at least has an external shape that is complementary to the shape of the pressing block of the rotating assembly;

[0019] Using a rotating assembly to fix the optical fiber assembly above the annular baffle of the mechanical body;

[0020] The lens assembly is placed below the annular baffle of the mechanical body, and the position of the lens assembly is adjusted so that the focal length of the lens meets the preset conditions, thereby completing the optical fiber positioning.

[0021] According to the positioning method of the optical fiber locator provided in the present disclosure, the optical fiber assembly is fixed above the annular baffle of the mechanical body by using a rotating assembly, comprising: selecting a group of rotating assemblies, the rotating assembly comprising a rotating handle and at least one pressing block; placing the at least one pressing block in at least one groove of the preset number of grooves, respectively, installing the rotating handle above the annular platform of the mechanical body and fully coupling with the at least one pressing block; and fixing the optical fiber assembly above the annular baffle of the mechanical body by rotating the rotating handle to drive the at least one pressing block to move inward at the same time.

[0022] In summary, the present disclosure provides a fiber optic positioner and a positioning method thereof, wherein the fiber optic positioner is composed of a mechanical body, a fiber optic assembly, a rotating assembly, and a lens assembly, and has a simple structure, and the installation and disassembly of each assembly is simple, especially the positioning and replacement of the fiber optic assembly in the mechanical body are very simple. The fiber optic positioner provided by the present disclosure can quickly replace the fiber optic assembly and ensure that the surface of the fiber optic assembly is at the focus of the lens assembly. Through the mutual cooperation of the inner wall shape and the annular baffle in the mechanical body, each fiber optic assembly placed in the mechanical body can be double-positioned, effectively preventing the fiber optic assembly from continuing to move downward; through the external shape of the fiber optic assembly that is complementary to the shape of the pressing block, the fiber optic assembly can be firmly fixed between the pressing block and the annular baffle, and its precise positioning can be achieved; the rotation of the rotating handle drives the movement of the pressing block, and the pressing block can be quickly pushed out and retracted. The operation is simple and easy to learn, and the fiber optic assembly can be quickly and accurately positioned at the same position in the mechanical body, which helps to achieve rapid installation and positioning of the fiber optic assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present disclosure or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 is a stereogram of the overall structure of an optical fiber locator provided by the present disclosure;

[0025] Figure 2a is a stereogram of a mechanical body provided by the present disclosure;

[0026] Figure 2b is a cross-sectional view at A of a mechanical body provided by the present disclosure;

[0027] Figure 2c are a top view and a bottom view of a mechanical body provided by the present disclosure;

[0028] Figure 2d The three-dimensional diagram and the front view of an optical fiber assembly provided by the present invention are

[0029] Figure 2e is a stereogram of a lens assembly provided by the present disclosure;

[0030] Figure 3a is a bottom view of a rotating handle provided by the present disclosure,

[0031] Figure 3b It is a front view and a top view of a pressing block provided by the present disclosure;

[0032] Figure 4a is a bottom view of another rotating handle provided by the present disclosure,

[0033] Figure 4b are a front view and a top view of another pressing block provided by the present disclosure;

[0034] Figure 5 It is a flow chart of a positioning method of a fiber optic locator provided in the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the technical solutions in the present disclosure will be clearly and completely described below in conjunction with the drawings in the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0036] The fiber optic locator works in an optical system. It first extends the excitation light emitted by the laser in the system to the external sample through lenses and optical fibers. It then irradiates the excitation light to the sample, and the reflected light or excited fluorescence is transmitted back to the imaging component through optical fibers and lenses for imaging and detection.

[0037] Figure 1 is a three-dimensional diagram of the overall structure of a fiber optic locator provided by the present disclosure. Figure 1 The optical fiber positioner includes: a mechanical body 110, an optical fiber assembly 120, a rotating assembly 130, a lens assembly 140, and a screw 150. The mechanical body 110 works together with other optical fiber assemblies 120, rotating assembly 130, and lens assembly 140 in an optical system to achieve fast and accurate positioning of the optical fiber.

[0038] The mechanical body 110 is the main structure of the optical fiber positioner, and is used to fix the optical fiber assembly 120, the rotating assembly 130, and the lens assembly 140. The inner side of the mechanical body is used to fix the optical fiber assembly 120 and the lens assembly 140, and the outer side is used to connect the rotating assembly 130. Specifically, one end is used to fix the optical fiber assembly 120, that is, the optical fiber assembly 120 is fixed in the mechanical body 110 through the rotating assembly 130 on the outer side; the other end is used to fix the lens assembly 140, that is, the lens assembly 140 is fixed in the mechanical body 110 through the screw 150.

[0039] The mechanical body 110 is an irregularly shaped mechanical connector, which can be subdivided into a mechanical connector composed of multiple components, and the inner wall shape of the inner side of the mechanical body is at least partially complementary to the outer shape of the optical fiber assembly, thereby ensuring that the two are concentric after the optical fiber assembly is placed in the mechanical body, and the optical fiber assembly normally transmits excitation light, reflected light or fluorescence in the optical fiber locator, and at the same time, the positioning of the optical fiber is achieved through complementary shapes.

[0040] Figure 2a is a stereogram of a mechanical body provided by the present disclosure, Figure 2b is a cross-sectional view at A of a mechanical body provided by the present disclosure, Figure 2c These are a top view and a bottom view of a mechanical body provided by the present invention.

[0041] See also Figure 2a , Figure 2b , Figure 2c The mechanical body provided in the embodiment of the present disclosure is a whole composed of a hollow cylinder 1101, an annular baffle 1102, and an annular platform 1104 provided with a preset number of grooves 1103. The annular baffle 1102 is fixed to the inner side of the hollow cylinder 1101, the annular platform 1104 is fixed to the outer side of the hollow cylinder 1101, and the preset number of grooves 1103 are evenly distributed on the upper surface of the annular platform. The inner wall shape of the hollow cylinder at least includes: a continuous first curved surface inclined at a first angle presented on one side of the annular baffle.

[0042] Specifically, it can be understood that the inner wall shape of the hollow cylinder at least includes a first curved surface which is a continuous and smooth curved surface surrounded by countless equal-length generatrixes, each generatrix being inclined downward at a first angle, and the first angle is the angle between any generatrix and the vertical direction, and the first angle is an acute angle, that is, the first curved surface is a downward-inclined, continuous curved surface.

[0043] See also Figure 2b The wall thickness of the hollow cylinder 1101 changes significantly from top to bottom, and the inner wall shape of the hollow cylinder is divided into four curved surfaces according to the height of the hollow cylinder and the position of the annular baffle.

[0044] The first curved surface is located above the annular baffle, and the first curved surface is a continuous and smooth vertical cylinder with a first diameter.

[0045] The second curved surface is located above the annular baffle and connected to the first curved surface. The second curved surface is a continuous first curved surface inclined at a first angle. The equal-length generatrix of the second curved surface is the first length, and the diameter of the second curved surface is reduced from the first diameter to the second diameter. The second diameter is smaller than the first diameter. The second diameter is determined according to the first length, the first diameter, and the first angle. For example, the product of the first length and the sine value of the first angle is first calculated, and then the difference between the first length and twice the product is calculated as the second diameter.

[0046] The third curved surface is located above the annular baffle and is connected with the second curved surface and the fourth curved surface. The third curved surface is a continuous and smooth vertical cylinder with a diameter of the second diameter.

[0047] The fourth curved surface is located below the annular baffle and connected to the third curved surface. The fourth curved surface is a continuous and smooth vertical cylinder with a third diameter. The third diameter can be the same as the first diameter, or the same as the second diameter, or a value smaller than the outer diameter of the hollow cylinder but different from the first diameter and the second diameter. The present disclosure does not limit this.

[0048] By making the inner wall shape of the mechanical body meet specific conditions, it is ensured that the optical fiber component placed in the mechanical body can be placed in the mechanical body and can be accurately stuck in the position corresponding to the complementary shape of the mechanical body, so that the optical fiber component can be accurately positioned in the same position each time it is placed.

[0049] In some embodiments, the hollow cylinder includes at least one screw hole, and the at least one screw hole is used to fix the lens assembly. Figure 2a A screw hole 1105 is provided on the hollow cylinder 1101, and the lens assembly is fixed by passing a screw through the screw hole to contact the lens assembly. In some embodiments, the screw may be a top screw or other types of screws, which is not limited in the present disclosure.

[0050] See also Figure 2b , Figure 2c The annular baffle 1102 is used to position the optical fiber assembly to prevent it from moving downward. The outer diameter of the annular baffle is the second diameter, and the inner diameter is determined according to the optical fiber assembly. For example, the inner diameter of the annular baffle needs to be greater than the thickness of a conventional optical fiber to ensure that the excitation light transmitted from the lens assembly to the optical fiber assembly can be transmitted normally, and the reflected light or fluorescence collected by the optical fiber assembly can also be normally transmitted back to the lens assembly, thereby ensuring that the optical fiber in the optical fiber assembly can work normally.

[0051] In some embodiments, the annular baffle is a fixed baffle, and the fixed baffle is used to prevent the optical fiber assembly from moving downward. The relative position of the fixed baffle in the hollow cylinder is fixed and unchanged, and is lower than the bottom surface of the outer annular platform. For example, the fixed baffle can be fixed in the middle of the inner side of the hollow cylinder, or can be fixed in the lower part of the hollow cylinder. The position of the annular baffle can be adjusted according to actual needs, and the present disclosure does not limit this.

[0052] In other embodiments, the annular baffle is a movable baffle, which is used to prevent the optical fiber assembly from moving downward and to push the optical fiber assembly to move upward. A control device is also provided on the lower side of the movable baffle, which is used to control the movable baffle to move upward, thereby pushing the optical fiber assembly out of the mechanical body, so as to facilitate the replacement of the optical fiber assembly. The control device can be a drive motor or other device that can drive the annular baffle to move. The control device can be installed in the inner wall of the hollow cylinder or on the outer side of the hollow cylinder, and the present disclosure does not limit this.

[0053] By setting an annular baffle on the mechanical body, the optical fiber assembly can be precisely positioned by the shape of the inner wall of the mechanical body, and the annular baffle can also be used to prevent the optical fiber assembly from continuing to move, that is, the secondary precise positioning of the optical fiber can be achieved by the annular baffle. At the same time, the inner ring of the annular baffle can also be used to transmit the excitation light transmitted by the lens assembly to the optical fiber assembly, the reflected light or fluorescence collected by the optical fiber assembly, so as to ensure the light transmission between the optical fiber assembly and the lens assembly.

[0054] See also Figure 2a , Figure 2b and Figure 2c The annular platform 1104 is fixed on the outside of the hollow cylinder 1101, the inner diameter of the annular platform 1104 is the outer diameter of the hollow cylinder, the annular platform 1104 is provided with a preset number of grooves, and the preset number of grooves are evenly distributed on the upper surface of the annular platform, see Figure 2c In the schematic diagram of the mechanical body provided in the embodiment of the present disclosure, the preset number is 3, that is, 3 grooves are provided on the annular platform 1104. In other embodiments, the preset number may also take other integer values, and the present disclosure does not limit this.

[0055] The outer diameter of the annular platform and the depth and width of the groove are determined according to the size of the pressing block in the rotating assembly, including: the outer diameter of the annular platform is greater than the length of the pressing block, the depth of the groove is equal to the height of the pressing block, and the width of the groove is equal to the width of the pressing block. The length and width of the pressing block refer to the length of the respective projections of the pressing block on the horizontal plane, and the height of the pressing block refers to the length of the pressing block in the vertical direction.

[0056] By setting an annular platform on the outside of the mechanical body, the support of the rotating component is achieved, and by placing a pressure block independent of the mechanical body in a preset number of grooves set on the annular platform, the pressure block can be pushed out and retracted, so that the pressure block can be pushed out when the optical fiber component needs to be positioned, and when the optical fiber component is replaced, the pressure block can be retracted to hide it in the groove to avoid blocking the removal and replacement of the optical fiber component.

[0057] Figure 2d is a stereogram and a front view of an optical fiber assembly provided by the present disclosure; see Figure 2d , the optical fiber assembly 120 includes an optical fiber mechanical part 1201 and an optical fiber 1202, wherein the optical fiber mechanical part 1201 is used to fix the axial position of the optical fiber assembly in the mechanical body; the optical fiber 1202 is used to transmit excitation light, reflected light or fluorescence; the optical fiber 1202 can be fixed in the optical fiber mechanical part 1201 by light-curing glue, for example, ultraviolet glue is used to cure and bond the optical fiber 1202 and the optical fiber mechanical part 1201. In some embodiments, the optical fiber 1202 can also be replaced by an optical fiber bundle, which is not limited in the present disclosure.

[0058] Specifically, it can be understood that the optical fiber assembly is composed of an optical fiber mechanical part and an optical fiber. In order to ensure that the optical fiber mechanical part can accurately fix the optical fiber assembly in the axial position of the mechanical body, the optical fiber 1202 is located on the central axis of the optical fiber mechanical part 1201, and the external shape of the optical fiber assembly needs to be at least partially complementary to the inner wall shape of the mechanical body, that is, the optical fiber mechanical part at least has an external shape that complements the inner wall shape of the hollow cylinder. In short, the optical fiber assembly at least has an external shape that complements the inner wall shape of the hollow cylinder, including: a second curved surface inclined at a first angle and with a reduced diameter, and the maximum diameter of the second curved surface is smaller than the maximum diameter of the first curved surface.

[0059] Specifically, it can also be understood that in order to ensure that the optical fiber positioning can be completed quickly and accurately each time the optical fiber assembly is used or replaced, the optical fiber mechanical component needs to be in close contact with the annular baffle of the mechanical body, and the optical fiber assembly is pressed against the annular baffle through the rotating assembly, and the external shape of the optical fiber mechanical component needs to be at least partially complementary to the shape of the pressing block, that is, the optical fiber mechanical component has at least an external shape that complements the shape of the pressing block, including: a continuous third curved surface inclined at a second angle and with a reduced diameter; a continuous fourth curved surface inclined at a second angle and with an increased diameter; wherein the second angle is determined according to the shape of the pressing block, and the fourth curved surface is symmetrically distributed with the third curved surface in the vertical direction.

[0060] See also Figure 2dThe optical fiber mechanical part 1201 in the optical assembly has an upper inclined surface with the same inclination angle as the mechanical main body, which can make the optical fiber assembly accurately fit with the mechanical main body when it is placed in the mechanical main body, thereby realizing auxiliary positioning of the optical fiber assembly while ensuring that the optical fiber assembly and the mechanical main body are in a concentric state. The lower part in contact with the pressing block has an inclined surface with the same angle as the pressing block, which can realize positioning and fixing of the optical fiber assembly by the pressing block acting on the optical fiber mechanical part when the optical fiber assembly is placed in the annular baffle of the mechanical main body.

[0061] See also Figure 2d The overall external shape of the optical fiber mechanical component 1201 is wide at the top and bottom and narrow in the middle. The external shapes from top to bottom are: a first cylindrical surface, a second curved surface, a third curved surface, a second cylindrical surface, a fourth curved surface, a third cylindrical surface, and a fifth curved surface.

[0062] Wherein, the first cylindrical surface is a cylindrical surface with a constant diameter, and the diameter of the first cylindrical surface is smaller than the first diameter of the mechanical body;

[0063] The second curved surface is a continuous curved surface inclined at a first angle and having a reduced diameter, and the maximum diameter of the second curved surface is smaller than the maximum diameter of the first curved surface, that is, the maximum diameter of the second curved surface is smaller than the first diameter, and the maximum diameter of the second curved surface is greater than or equal to the diameter of the first cylindrical surface;

[0064] The third curved surface is a continuous curved surface inclined at a second angle and having a reduced diameter. The minimum diameter of the third curved surface is greater than the outer diameter of the optical fiber in the optical fiber assembly. The second angle refers to the angle between the generatrix of the third curved surface and the vertical direction. The second angle is determined according to the shape of the pressing block. For example, the pressing block is a wedge-shaped structure with a first inclined surface. The second angle is equal to the inclination angle of the first inclined surface. The inclination angle of the first inclined surface refers to the angle between the projection of the first inclined surface in the vertical direction and the vertical direction. For example, if the pressing block is a rectangular parallelepiped structure, the second angle is equal to 90 degrees. In this case, the third curved surface is an annular plane in the horizontal direction.

[0065] The second cylindrical surface is a cylindrical surface with a constant diameter, and the diameter of the second cylindrical surface is equal to the minimum diameter of the third curved surface;

[0066] The fourth curved surface is a continuous curved surface inclined at a second angle and having an increasing diameter, and the fourth curved surface and the third curved surface are symmetrically distributed in the vertical direction.

[0067] The third cylindrical surface is a cylindrical surface with a constant diameter, and the diameter of the third cylindrical surface is equal to the maximum diameter of the third curved surface;

[0068] The fifth curved surface is a continuous curved surface inclined at a second angle and having a reduced diameter. The minimum diameter of the fifth curved surface may be greater than the minimum diameter of the third curved surface, may be equal to the minimum diameter of the third curved surface, or may be smaller than the minimum diameter of the third curved surface. This disclosure does not limit this.

[0069] In some embodiments, the optical fiber assembly provided in the embodiments of the present disclosure is merely an example, and optical fiber mechanical parts of different shapes can also be constructed according to the optical fiber assembly provided in the embodiments of the present disclosure. Specifically, at least one of the first cylinder, the second cylinder, the third cylinder, and the fifth curved surface is omitted, such as an optical fiber mechanical part composed of the second curved surface, the third curved surface, the second cylinder, the fourth curved surface, the third cylinder, and the fifth curved surface; an optical fiber mechanical part composed of the second curved surface, the third curved surface, the second cylinder, the fourth curved surface, and the third cylinder; and an optical fiber mechanical part composed of the second curved surface, the third curved surface, the second cylinder, the fourth curved surface, and the third cylinder. The present disclosure does not limit this.

[0070] It should be noted that the busbar length of the second curved surface can be less than or equal to the busbar length of the first curved surface. In this case, the second curved surface can be completely covered within the first curved surface, and the complementary shape between the optical fiber assembly and the mechanical body can make the second curved surface of the optical fiber assembly completely fit on the first curved surface. The busbar length of the second curved surface can also be greater than the busbar length of the first curved surface. In this case, the second curved surface partially covers the first curved surface, and the complementary shape between the optical fiber assembly and the mechanical body can still make the second curved surface of the optical fiber assembly fit on the first curved surface. Therefore, the present disclosure does not specifically limit the busbar length of the second curved surface of the optical fiber assembly.

[0071] In addition, it can also be understood that the vertical distance from the top of the second curved surface in the optical fiber mechanical component to the bottom of the optical fiber mechanical component is less than or equal to the vertical distance from the top of the first curved surface in the mechanical body to the annular baffle. At the same time, in order to further improve the accuracy of the optical fiber positioner during positioning, the optical fiber mechanical component can also meet the following conditions: the vertical distance from the top of the fourth curved surface to the annular baffle is the same as the vertical distance from the annular baffle to the upper surface of the annular platform of the mechanical body. When this condition is met, the contact area between the pressure block and the optical fiber assembly can be greatly increased, so that the optical fiber assembly can be perfectly fixed between the pressure block and the annular baffle, and even when a small number of pressure blocks are used, the optical fiber positioner can still be ensured to have high stability during positioning.

[0072] By making the optical fiber mechanical part have a shape complementary to the inner wall of the mechanical body, the optical fiber assembly can be fitted on the inner wall of the mechanical body through the complementary shape when placed inside the mechanical body, and the top of the optical fiber mechanical part will not be lower than the first curved surface of the inner wall of the mechanical body, thereby ensuring that the optical fiber mechanical part can be assisted in positioning by the shape of the inner wall when placed in the mechanical body, and the optical fiber assembly with the same external shape can be positioned at the same position every time. By making the optical fiber mechanical part have a shape complementary to the shape of the pressing block, the pressing block can be tightly fitted with the optical fiber assembly, and the optical fiber assembly is firmly fixed between the pressing block and the annular baffle of the mechanical body through the interaction between the pressing block and the annular baffle, and will not move up and down after positioning. By adopting symmetrically distributed third and fourth curved surfaces, while increasing the aesthetics of the optical fiber assembly, it is also used as the contact surface for the user to the optical fiber assembly. The junction of the third and fourth curved surfaces is used as the contact surface, so that the user can easily hold the optical fiber mechanical part when replacing it, and avoid the situation where the optical fiber assembly is damaged due to the outer surface being too smooth and falling off during replacement.

[0073] The rotating assembly 130 includes a rotating handle and at least one pressing block, wherein the rotating handle is used to control the movement of the pressing block, and the pressing block is used to fix the optical fiber assembly above the annular baffle of the mechanical body.

[0074] The rotating handle is a hollow cylinder with an inner diameter equal to the inner diameter of the annular platform and a wall thickness greater than or equal to the ring width of the annular platform, and the height of the rotating handle is less than or equal to the distance from the upper surface of the annular platform to the top of the mechanical body. The height of the rotating handle can also meet a specific rotation condition, and the specific rotation condition can be that the height of the rotating handle is greater than a certain threshold. By controlling the height of the rotating handle to be greater than a certain height, the contact area between the outer surface area of ​​the rotating handle and the palm is increased, so that the user can rotate the rotating handle more easily.

[0075] Specifically, it can be understood that in order for the pressing block to be pressed onto the optical fiber assembly, the shape of the optical fiber assembly needs to be fitted with the shape of the pressing block, that is, the optical fiber mechanical part of the optical fiber assembly has at least an external shape that complements the shape of the pressing block, specifically including: a continuous third curved surface inclined at a second angle and with a reduced diameter; a continuous fourth curved surface inclined at a second angle and with an increased diameter; wherein the second angle is determined according to the shape of the pressing block, and the fourth curved surface is symmetrically distributed with the third curved surface in the vertical direction.

[0076] In some embodiments, the pressing block is a wedge-shaped structure with a first inclined surface. The wedge-shaped structure can be regarded as a whole composed of a cuboid and a triangular prism, and the width of the cuboid corresponds to the height of the triangular prism, and the height of the cuboid corresponds to one side of the bottom surface of the triangular prism, so that the pressing block of the wedge-shaped structure has an inclined surface. The wedge-shaped structure is used to contact the optical fiber mechanical part of the optical fiber assembly, and by pressing the first inclined surface of the pressing block against the fourth curved surface on the optical fiber mechanical part, it is ensured that the optical fiber assembly is firmly fixed below the pressing block and above the annular baffle of the mechanical body.

[0077] In other embodiments, the pressing block is a rectangular parallelepiped structure, in which case the optical fiber assembly has at least an external shape that complements the shape of the pressing block, including: a first annular plane with a ring width of the second length in the horizontal direction, a fourth cylindrical surface with a height of the third length in the vertical direction, and a second annular plane with a ring width of the second length in the horizontal direction, wherein the first annular plane and the third annular plane are parallel to each other and the vertical distance between the planes is the third length, the second length is less than the length of the pressing block, and the third length is greater than the height of the pressing block. By moving the pressing block of the rectangular parallelepiped structure inward, the pressing block is closely fitted with the fourth cylindrical surface and the second annular plane, thereby realizing the pressing effect of the pressing block on the optical fiber assembly and completing the positioning of the pressing block on the optical fiber assembly.

[0078] Specifically, it can also be understood that, in order for the rotation of the rotating handle to drive the movement of the pressure block, the pressure block needs to be placed in the groove of the annular platform and the rotating handle needs to be completely fitted with the annular platform and the at least one pressure block, that is, the at least one pressure block is respectively placed in at least one groove of the preset number of grooves, and the rotating handle is installed above the annular platform of the mechanical body and is completely coupled with the at least one pressure block.

[0079] Further, the rotating handle is used to control the movement of the pressing blocks, specifically including: rotating the rotating handle counterclockwise to control the preset number of pressing blocks to move inward; rotating the rotating handle clockwise to control the preset number of pressing blocks to move outward.

[0080] Specifically, it can also be understood that the number of the pressing blocks is less than or equal to the preset number. In order to ensure that the pressing block can fully compress the optical fiber assembly, a preset number of grooves are provided on the annular platform. In actual use, multiple grooves are selected as target grooves according to actual needs. The target grooves are used to place the pressing blocks, and the unselected grooves are temporarily idle. When the contact area between the pressing block and the optical fiber is too small, the pressing ability of the pressing block on the optical fiber can be enhanced by selecting as many or even all of the grooves as possible as target grooves. In the embodiment of the present disclosure, the preset number can be any integer value determined based on the width of the groove and the inner ring circumference of the annular platform, such as taking the integer obtained by rounding the product of the inner ring circumference of the annular platform and the width of the groove as the preset number, or any integer less than the integer, which is not limited in the present disclosure.

[0081] In some embodiments, when the pressing block is a wedge-shaped structure having a first inclined surface, the number of the pressing blocks is determined according to the second angle of the optical fiber assembly and the generatrix length of the third curved surface, specifically including:

[0082] Step a1, calculating the length of the first inclined surface according to the first formula, the first formula is,

[0083]

[0084] Here, cos(second angle) represents the cosine value of the second angle.

[0085] Step a2: if the length of the first inclined surface is less than the generatrix length of the third curved surface, the number of the pressing blocks is calculated according to the second formula, which is:

[0086]

[0087] Among them, floor() represents the rounding down function.

[0088] Step a3: if the length of the first inclined surface is greater than the generatrix length of the third curved surface, the number of the pressing blocks is calculated according to a third formula, which is:

[0089]

[0090] Among them, ceiling() represents the rounding up function.

[0091] Step a4: if the length of the first inclined surface is equal to the generatrix length of the third curved surface, the number of the pressing blocks is any integer value greater than 1 and less than or equal to a preset number.

[0092] In the above embodiment, the contact area between the pressing block and the optical fiber assembly is determined according to the second angle of the optical fiber assembly and the busbar length of the third curved surface. When the contact area of ​​the pressing block relative to the optical fiber assembly is small, the overall contact area between the pressing block and the optical fiber assembly can be increased by increasing the number of pressing blocks, thereby improving the clamping ability of the pressing block. When the contact area of ​​the pressing block relative to the optical fiber assembly is large, it can be ensured that the pressing block can clamp the optical fiber assembly. At this time, the number of pressing blocks can be appropriately reduced, thereby reducing the number of components of the optical fiber locator and reducing costs.

[0093] It should be noted that the rotating handle can be an integral body in the shape of a hollow cylinder, which is directly mounted on the mechanical body; the hollow cylinder can also be a hollow cylinder composed of two parts. During installation, the two parts are placed on the annular platform respectively and aligned and fixed, such as by fixing the two parts together with screws to form the rotating handle, or by using special materials to make the two parts so that they can be magnetically adsorbed together. This method of using two parts to form a rotating handle can facilitate the installation and replacement of the rotating handle, thereby making the optical fiber locator easy to install and disassemble, reducing the difficulty.

[0094] By placing at least one pressing block into the groove of the annular platform of the mechanical body and then installing a rotating handle above the annular platform, the rotating handle and the pressing block are coupled to each other, and then the movement of the pressing block is achieved by controlling the clockwise and counterclockwise rotation of the rotating handle.

[0095] Figure 2e is a stereoscopic diagram of a lens assembly provided by the present disclosure; see Figure 2e The lens assembly 140 includes a mechanical cylinder 1401 and a lens 1402. The mechanical cylinder is used to fix the lens. The lens is used to couple the excitation light to the surface of the optical fiber, collect the reflected light or fluorescence transmitted back by the optical fiber, and transmit the collected reflected light or fluorescence back to the optical system for imaging and detection analysis. The lens is fixed in the mechanical cylinder by screws. The lens can be a single lens or a combination of multiple lenses, which is not limited in the present disclosure.

[0096] In some embodiments, after placing the lens assembly under the annular baffle of the mechanical body, the axial position of the lens assembly on the mechanical body is adjusted, and when the focal length of the lens assembly meets the preset conditions, the lens assembly is fixed by screws 150 to ensure that the optical fiber assembly fixed above the annular baffle is on the focal plane of the lens assembly, and the preset conditions include the focal length of the lens assembly being at the annular baffle of the mechanical body.

[0097] It should be noted that the horizontal direction in this embodiment refers to the direction perpendicular to the inner wall of the machine body, and the vertical direction refers to the direction parallel to the inner wall of the machine body.

[0098] In the above embodiment, the fiber optic positioner is composed of a mechanical body, a fiber optic assembly, a rotating assembly and a lens assembly, and has a simple structure. The installation and disassembly of each assembly are simple, especially the positioning and replacement of the fiber optic assembly in the mechanical body. The fiber optic positioner provided by the present invention can quickly replace the fiber optic assembly and ensure that the fiber optic assembly is on the focal plane of the lens assembly. Through the cooperation between the inner wall shape and the annular baffle in the mechanical body, each optical fiber component placed in the mechanical body can be doubly positioned. On the one hand, since the optical fiber component has a second curved surface that complements the inner wall shape, when the second curved surface of the optical fiber component contacts the inner wall of the mechanical body, it can effectively prevent the optical fiber component from continuing to move downward, while ensuring that the optical fiber component is always in a concentric state with the mechanical body; on the other hand, when the optical fiber component contacts the annular baffle, the annular baffle can also prevent the optical fiber component from continuing to move downward; through the external shape of the optical fiber component that complements the shape of the pressing block, the optical fiber component can be firmly fixed between the pressing block and the annular baffle to achieve precise positioning; the movement of the pressing block is driven by the rotation of the rotating handle, and the pressing block can be quickly pushed out and retracted. The operation is simple and easy to learn, and the optical fiber component can be quickly and accurately positioned at the same position in the mechanical body, which helps to achieve rapid installation and positioning of the optical fiber component.

[0099] The rotating assembly provided in the embodiment of the present disclosure includes a rotating handle and at least one pressing block, and different rotating handles correspond to different pressing blocks. Figure 3a and Figure 3b is a structural schematic diagram of a rotating assembly provided by an embodiment of the present disclosure, Figure 4a and Figure 4b It is a structural schematic diagram of a rotating assembly provided in an embodiment of the present disclosure.

[0100] Figure 3a and Figure 3b is a schematic diagram of the structure of a rotating assembly provided by an embodiment of the present disclosure, wherein: Figure 3a It is a bottom view of a rotating handle provided by the present disclosure, wherein the lower surface of the rotating handle is an internal thread that spreads outward in a counterclockwise direction, and the upper surface and side surfaces are smooth planes; Figure 3b It is a front view and a top view of a pressing block provided by the present invention, wherein the preset area on the upper surface of the pressing block is an external thread, the lower surface and the side surface are smooth planes, the upper surface is a rectangle, and the side surface is a right-angled trapezoid, and the preset area refers to a rectangular area on the upper surface circled by a side of the rectangle with the wide side away from the first inclined surface as one side of the rectangle, for example, the preset area is the area excluding the projection of the first inclined surface on the upper surface.

[0101] In some embodiments, if the fiber optic positioner is used Figure 3a The rotating handle and Figure 3b The optical fiber positioning is realized by using a pressing block, and the rotating handle is completely coupled with the at least one pressing block, including: the internal thread of the rotating handle is coupled with the external thread of the at least one pressing block.

[0102] Specifically, the internal thread of the lower surface of the rotating handle and the external thread of the upper surface of the pressing block have the same pitch and thread direction. For example, when the internal thread of the rotating handle is a thread that spreads outward counterclockwise, the external thread of the pressing block can be a right-hand thread. When the rotating handle is installed above the annular platform of the mechanical body, the internal thread of the rotating handle will not affect its contact with the upper surface of the annular platform, and can fit tightly with the annular platform, and can also cooperate with the external thread of the pressing block to achieve complete coupling between the rotating handle and the pressing block.

[0103] In some embodiments, if the fiber optic positioner is used Figure 3a The rotating handle and Figure 3b The pressing block is used to realize the positioning of the optical fiber. The rotating handle controls the movement of the pressing block by coupling the internal thread of the rotating handle with the external thread of the pressing block. Since the internal thread of the rotating handle spreads outward, the pressing block will move inward when the rotating handle is rotated counterclockwise, and will move outward when the rotating handle is rotated clockwise. Therefore, the rotating handle is used to control the movement of the pressing block, specifically including: rotating the rotating handle counterclockwise to control at least one pressing block to move inward; rotating the rotating handle clockwise to control at least one pressing block to move outward.

[0104] Figure 4a and Figure 4b is a schematic diagram of the structure of another rotating assembly provided by an embodiment of the present disclosure, wherein: Figure 4a It is a bottom view of another rotating handle provided by the present invention, wherein the lower surface of the rotating handle is at least one arc-shaped groove, and the upper surface and the side surfaces are smooth planes, and the number of the arc-shaped grooves is the same as the number of the pressing blocks. If the number of the pressing blocks is 3, then the number of the arc-shaped grooves is also 3. Figure 4b is a front view and a top view of another pressing block provided by the present disclosure, see Figure 4b A protrusion is provided on the upper surface of the pressing block, and the position of the protrusion can be the center of the right side of the vertical projection of the bottom surface of the pressing block on the upper surface, or can be other positions on the upper surface, which is not limited in the present disclosure.

[0105] In some embodiments, if the fiber optic positioner is used Figure 4a The rotating handle and Figure 4b The pressing block realizes the optical fiber positioning, and the rotating handle is completely coupled with the at least one pressing block, including: at least one arc-shaped groove of the rotating handle is coupled with the protrusion of the at least one pressing block.

[0106] Specifically, the width of the protrusion is the same as the width of the arc-shaped groove, and the height of the protrusion is the same as the depth of the arc-shaped groove. When the rotating handle is installed above the annular platform of the mechanical body, the protrusion of the pressing block can be exactly placed in the arc-shaped groove, and the protrusion of the pressing block can be driven to move in the arc-shaped groove according to the rotation of the rotating handle, so that the pressing block moves with the rotation of the rotating handle.

[0107] In some embodiments, if the fiber optic positioner is used Figure 4a The rotating handle and Figure 4b The pressing block is used to realize the positioning of the optical fiber. The rotating handle controls the movement of the pressing block by coupling the protrusion of the pressing block with the arc-shaped groove of the rotating handle. Since the arc-shaped groove of the rotating handle is an arc pointing outward counterclockwise, the pressing block will move inward when the rotating handle is rotated counterclockwise, and will move outward when the rotating handle is rotated clockwise. Therefore, the rotating handle is used to control the movement of the pressing block, specifically including: rotating the rotating handle counterclockwise to control at least one pressing block to move inward; rotating the rotating handle clockwise to control at least one pressing block to move outward.

[0108] It is worth noting that when the pressing block is initially placed, it needs to be completely placed in the groove of the annular platform to ensure that the pressing block is completely hidden in the groove, so as to facilitate the subsequent placement of the optical fiber component when the pressing block exceeds the groove of the annular platform and needs to be readjusted.

[0109] Figure 3b and Figure 4b The front view and top view of two types of pressing blocks are provided, and both types of pressing blocks are wedge-shaped structures with a first inclined surface, wherein the first inclined surface can be a plane or a curved surface.

[0110] Specifically, the bending angle of the first inclined surface is determined according to the width of the pressing block and the third curved surface of the optical fiber assembly, specifically including:

[0111] Step b1, calculating the minimum circumference according to the minimum diameter of the third curved surface of the optical fiber assembly;

[0112] Wherein, the minimum circumference is the product of π and the minimum diameter of the third curved surface. Since the third curved surface is a truncated cone side surface, the minimum diameter of the third curved surface refers to the diameter of the top circle of the third curved surface;

[0113] Step b2, calculating the ratio between the width of the pressing block and the minimum perimeter;

[0114] Step b3: if the ratio is greater than a preset percentage, the bending angle of the first inclined surface is determined according to a fourth formula; otherwise, the bending angle of the first inclined surface is zero. The fourth formula is:

[0115]

[0116] Among them, the preset percentage is determined according to an empirical value, and the present disclosure does not limit this; the bending angle of the first slope refers to the fan-shaped arc corresponding to the first slope. When the bending angle is zero, the first slope is a plane; when the bending angle is an angle determined according to the fourth formula, the first slope is a surface with the bending angle as an arc and a radius determined by half of the minimum diameter of the third surface.

[0117] The degree of fit between the first inclined surface of the pressing block and the contact surface of the optical fiber assembly is determined by the ratio of the width of the pressing block and the minimum diameter of the third curved surface of the optical fiber assembly. When the ratio is greater than the preset percentage, if the first inclined surface with a bending angle of zero is used, it cannot be completely fitted with the third curved surface when fitting, and there is a certain gap, which will cause the pressing block to be unable to press the optical fiber assembly. Therefore, in this case, a curved surface with the same bending angle as the third curved surface should be used as the first inclined surface so that the first inclined surface can completely fit the optical fiber assembly. When the ratio is less than or equal to the preset percentage, the gap between the first inclined surface with a bending angle of zero and the third curved surface is small and almost negligible. Therefore, at this time, the bending angle of the first inclined surface can be zero, that is, the first inclined surface is a plane.

[0118] It should be noted that, in practical applications, a suitable pressing block can be designed or matched according to the optical fiber assembly. For example, if the third curved surface of the optical fiber assembly has been fixed, then the pressing block with the highest fit can be selected according to the above method or the pressing block can be redesigned for the current optical fiber assembly. In practical applications, the shape parameters of the optical fiber mechanical parts in the optical fiber assembly can also be determined based on the existing pressing blocks. If the first inclined surface of the existing pressing block is a plane, the minimum diameter of the third curved surface in the optical fiber assembly is set to a length that satisfies the ratio of the width of the pressing block to the minimum circumference is less than or equal to a preset percentage, thereby achieving a tight fit between the pressing block and the optical fiber assembly.

[0119] In the above embodiments, the rotating handle and the pressing block coupled by the internal thread and the external thread, or the rotating handle and the pressing block coupled by the protrusion and the arc-shaped groove, can drive the pressing block to move inward or outward by controlling the movement of the rotating handle, thereby achieving the fixing effect of the pressing block on the optical fiber assembly. The fit between the pressing block and the optical fiber assembly is improved by adjusting the bending angle of the first inclined surface of the pressing block according to the contact relationship between the optical fiber assembly and the pressing block, thereby improving the pressing effect of the pressing block on the optical fiber assembly.

[0120] Figure 5 Schematic diagram of a positioning method of a fiber optic locator provided by the present disclosure. Figure 5 , the positioning method of the optical fiber locator comprises:

[0121] Step S51, placing the optical fiber assembly above the annular baffle of the mechanical body.

[0122] Specifically, the optical fiber assembly has at least an external shape that is complementary to the inner wall shape of the hollow cylinder in the mechanical body; the inner wall shape of the hollow cylinder at least includes: a continuous first curved surface inclined at a first angle on one side of the annular baffle. The optical fiber assembly has at least an external shape that is complementary to the inner wall shape of the hollow cylinder, including: a continuous second curved surface inclined at a first angle and with a reduced diameter, and the maximum diameter of the second curved surface is smaller than the maximum diameter of the first curved surface.

[0123] Specifically, the pressing block is a wedge-shaped structure with a first inclined surface, and the optical fiber assembly has at least an external shape complementary to the shape of the pressing block, including: a continuous third curved surface inclined at a second angle and with a reduced diameter; and a continuous fourth curved surface inclined at a second angle and with an increased diameter; wherein the second angle is determined according to the shape of the pressing block, and the fourth curved surface is symmetrically distributed with the third curved surface in the vertical direction.

[0124] Step S52: Using a rotating assembly to fix the optical fiber assembly above the annular baffle of the mechanical body.

[0125] Specifically, the method of fixing the optical fiber assembly above the annular baffle of the mechanical body by using a rotating assembly includes:

[0126] Step S521, selecting a set of rotating components, wherein the rotating components include a rotating handle and at least one pressing block;

[0127] Step S522, placing the at least one pressing block in at least one groove of the preset number of grooves, installing the rotating handle above the annular platform of the mechanical body and fully coupling with the at least one pressing block;

[0128] Step S523, rotating the rotating handle to drive the at least one pressing block to move inward at the same time, thereby fixing the optical fiber assembly above the annular baffle of the mechanical body.

[0129] Step S53, placing the lens assembly below the annular baffle of the mechanical body, and adjusting the position of the lens assembly so that the focal length of the lens meets the preset conditions, thereby completing the optical fiber positioning.

[0130] The preset condition includes that the focal length of the lens assembly is at the annular baffle of the mechanical body, which can ensure that the optical fiber assembly fixed above the annular baffle is on the focal plane of the lens assembly.

[0131] In some embodiments, after step S53, the method further includes: fixing the lens assembly by screws.

[0132] For a detailed description of the positioning method of the above-mentioned optical fiber locator, please refer to the description of the relevant system components in the above-mentioned embodiment, and the repeated parts will not be repeated. The embodiments of the optical fiber locator and the positioning method of the optical fiber locator described above are only illustrative, and some or all of the components can be selected according to actual needs to achieve the purpose of the embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should be covered by the protection scope of the present invention.

Claims

1. A fiber optic locator, characterized in that: The optical fiber positioner comprises: a mechanical body, an optical fiber assembly, a rotating assembly, and a lens assembly, wherein: The mechanical body is a whole composed of a hollow cylinder, an annular baffle, and an annular platform with a preset number of grooves. The annular baffle is fixed inside the hollow cylinder, and the annular platform is fixed outside the hollow cylinder. The preset number of grooves are evenly distributed on the upper surface of the annular platform. One end of the mechanical body is used to fix the optical fiber assembly, and the other end is used to fix the lens assembly. The optical fiber assembly includes an optical fiber mechanical part and an optical fiber, wherein the optical fiber mechanical part is used to fix the axial position of the optical fiber assembly on the mechanical body, the optical fiber is used to transmit the excitation light, and the optical fiber assembly has at least an external shape that is complementary to the inner wall shape of the hollow cylinder; The rotating assembly comprises a rotating handle and at least one pressing block, wherein the at least one pressing block is respectively placed in at least one groove among the preset number of grooves, the rotating handle is used to control the movement of the pressing block, the pressing block is used to fix the optical fiber assembly above the annular baffle of the mechanical body, and the optical fiber assembly has at least an external shape that is complementary to the shape of the pressing block; The lens assembly includes a mechanical cylinder and a lens, and the lens is used to couple the excitation light to the surface of the optical fiber and collect the reflected light or fluorescence transmitted back by the optical fiber.

2. The optical fiber locator according to claim 1, characterized in that: The inner wall shape of the hollow cylinder at least includes: a continuous first curved surface inclined at a first angle and presented on one side of the annular baffle.

3. The optical fiber locator according to claim 2, characterized in that: The optical fiber is located on the central axis of the optical fiber mechanical component, and the optical fiber assembly has at least an external shape that is complementary to the inner wall shape of the hollow cylinder, including: a continuous second curved surface inclined at a first angle and with a reduced diameter, and the maximum diameter of the second curved surface is smaller than the maximum diameter of the first curved surface.

4. The optical fiber locator according to claim 3, characterized in that: The pressing block is a wedge-shaped structure with a first inclined surface, and the optical fiber assembly has at least an external shape complementary to the shape of the pressing block, including: a continuous third curved surface inclined at a second angle and with a reduced diameter; and a continuous fourth curved surface inclined at a second angle and with an increased diameter; wherein the second angle is determined according to the shape of the pressing block, and the fourth curved surface is symmetrically distributed with the third curved surface in the vertical direction.

5. The optical fiber locator according to claim 1, characterized in that: The rotating handle is installed above the annular platform of the mechanical body and is fully coupled with the at least one pressing block, and the rotating handle is used to control the movement of the pressing block, specifically comprising: Rotate the rotating handle counterclockwise to control the at least one pressing block to move inward; The rotating handle is rotated clockwise to control the at least one pressing block to move outward.

6. The optical fiber locator according to claim 5, characterized in that: The lower surface of the rotating handle is an internal thread that spreads outward in a counterclockwise direction, and the preset area on the upper surface of the pressing block is an external thread; the rotating handle is fully coupled with the at least one pressing block, including: the internal thread of the rotating handle is coupled with the external thread of the at least one pressing block.

7. The optical fiber locator according to claim 5, characterized in that: The lower surface of the rotating handle is formed with at least one arc-shaped groove, and the upper surface of the pressing block is provided with a protrusion, and the number of the arc-shaped grooves is the same as the number of the pressing blocks; The rotating handle is fully coupled to the at least one pressing block, including: at least one arc-shaped groove of the rotating handle is coupled to a protrusion of the at least one pressing block.

8. The optical fiber locator according to claim 1, characterized in that: The hollow cylinder includes at least one screw hole, and the at least one screw hole is used to fix the lens assembly.

9. A method for positioning a fiber optic locator according to any one of claims 1 to 8, characterized in that: The method comprises: Placing the optical fiber assembly above the annular baffle of the mechanical body; wherein the optical fiber assembly at least has an external shape that is complementary to the inner wall shape of the hollow cylinder in the mechanical body, and the optical fiber assembly also at least has an external shape that is complementary to the shape of the pressing block of the rotating assembly; Using a rotating assembly to fix the optical fiber assembly above the annular baffle of the mechanical body; The lens assembly is placed below the annular baffle of the mechanical body, and the position of the lens assembly is adjusted so that the focal length of the lens meets the preset conditions, thereby completing the optical fiber positioning.

10. The positioning method of the optical fiber locator according to claim 9, characterized in that: The method of fixing the optical fiber assembly above the annular baffle of the mechanical body by using a rotating assembly comprises: Selecting a set of rotating components, the rotating components comprising a rotating handle and at least one pressing block; Placing the at least one pressing block in at least one groove of the preset number of grooves, and installing the rotating handle above the annular platform of the mechanical body and fully coupling with the at least one pressing block; The rotating handle is rotated to drive the at least one pressing block to move inward at the same time, so as to fix the optical fiber assembly above the annular baffle of the mechanical body.

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