Light path adjusting device and spectrum detector

Abstract

The embodiment of the invention provides a light path adjusting device and a spectrum detector, the light path adjusting device comprises a first adjusting piece, a second adjusting piece, an optical lens, a first connecting shaft and a second connecting shaft, and the optical lens is fixed on one side of the second adjusting piece along a first direction and is provided with a light emitting end face; the first connecting shaft and the second connecting shaft are respectively arranged on the first adjusting piece, the first connecting shaft is used for connecting the first adjusting piece and a base station of the spectrum detector, and the second connecting shaft is used for connecting the first adjusting piece and the second adjusting piece; the intersection point of the central axis of the first connecting shaft and the central axis of the second connecting shaft coincides with the center of the light emitting end face, the first adjusting piece and the second adjusting piece can rotate around the first connecting shaft relative to the base table, and the second adjusting piece can rotate around the second connecting shaft relative to the first adjusting piece. The light path adjusting device provided by the invention is simple in structure, facilitates the rapid and accurate adjustment of the optical lens, enables an actual light path to accord with a designed light path, and reduces the deviation of the light path.

Description

Technical Field

[0001] The present application relates to the field of optical instruments, and in particular to an optical path adjustment device and a spectrum detector. Background Art

[0002] Taking the application of spectral detectors in the biological and medical fields as an example, spectral detectors can be used as part of a particle analyzer to count and classify different particles. Because the fluorescence spectra produced by multiple lasers of different wavelengths exciting the same fluorescent dye overlap, they are collimated, split, and filtered to separate the fluorescence signals into different wavelengths. These are then received by a photodetector, which then uses computer software to analyze the fluorescence signals of each wavelength to determine the type and number of particles in the sample.

[0003] In a spectral detector, the positional accuracy of the optical lens significantly impacts the detection results. Therefore, the position of the optical lens must be adjusted before spectral analysis. Related technologies employ a planar displacement adjustment mechanism, which is unsuitable for complex optical systems. Furthermore, the adjustment process prevents the optical element from being adjusted around its light-emitting center, which can easily cause optical path deviation and affect optical path stability. Summary of the Invention

[0004] In view of this, embodiments of the present application aim to provide an optical path adjustment device and a spectrum detector to quickly and conveniently adjust the actual optical path to match the designed optical path.

[0005] To achieve the above objectives, the technical solution of the embodiment of the present application is implemented as follows:

[0006] The present invention provides an optical path adjustment device for a spectrum detector, comprising:

[0007] a first adjusting member and a second adjusting member;

[0008] an optical lens fixed to one side of the second adjusting member along the first direction, the optical lens having a light emitting end surface;

[0009] A first connecting shaft and a second connecting shaft are respectively provided on the first adjusting member, the first connecting shaft is used to connect the first adjusting member and the base of the spectrum detector, and the second connecting shaft connects the first adjusting member and the second adjusting member;

[0010] Among them, the intersection of the central axis of the first connecting axis and the central axis of the second connecting axis coincides with the center of the light-emitting end face, the first adjusting member and the second adjusting member can rotate relative to the base around the first connecting axis, and the second adjusting member can rotate relative to the first adjusting member around the second connecting axis.

[0011] In some embodiments, the first connecting axis extends along the top-bottom direction of the optical path adjusting device, the second connecting axis extends along a second direction, and the first direction, the second direction, and the top-bottom direction are perpendicular to each other;

[0012] And / or, the first connecting shaft and the first adjusting member are an integrated structure, or the first connecting shaft is a pin;

[0013] And / or, the second connecting shaft and the first adjusting member are an integrated structure, or the second connecting shaft is a pin shaft.

[0014] In some embodiments, the optical path adjustment device includes at least one connecting member, the connecting member connecting the first adjustment member and the second adjustment member, and the connection state of the connecting member includes a locked state and an unlocked state;

[0015] In the locked state, there is no relative movement between the second adjusting member and the first adjusting member;

[0016] In the unlocked state, the second adjusting member can rotate relative to the first adjusting member around the second connecting axis.

[0017] In some embodiments, the first adjusting member has a first surface, the second adjusting member has a second surface, the first surface and the second surface are in contact along a second direction, the second connecting shaft and the connecting member are respectively passed through the first surface and the second surface in sequence along the second direction, and the first direction and the second direction are perpendicular;

[0018] And / or, the connecting member is a fastening screw.

[0019] In some embodiments, the optical path adjustment device includes at least one fastener, which is used to connect the first adjustment member and the base and enable the first adjustment member to switch between a fixed state relative to the base and a rotational state relative to the base.

[0020] In some embodiments, the first adjusting member includes a third surface, the second adjusting member includes a fourth surface, the third surface and the fourth surface are arranged face to face along the top and bottom directions of the optical path adjustment device and form a gap, and a portion of the fastener protrudes from the top side of the third surface and is located in the gap, wherein the first direction is perpendicular to the top and bottom directions.

[0021] In some embodiments, the first adjusting member includes a vertical support plate and a horizontal support plate connected to each other, the bottom end of the horizontal support plate is used to abut against the base, and the vertical support plate extends from one side of the horizontal support plate along the second direction to the top side;

[0022] The first connecting shaft is provided through the horizontal support plate; the second connecting shaft is provided through the vertical support plate and the second adjusting member, and a gap is formed between the second adjusting member and the horizontal support plate along the top-bottom direction, and the first direction, the second direction, and the top-bottom direction are perpendicular to each other.

[0023] And / or, the second adjusting member is provided with at least one operating hole, the operating hole passes through the second adjusting member along the top-bottom direction, and the operating hole is used to accommodate an operating tool for driving the second adjusting member to rotate or the first adjusting member and the second adjusting member to rotate.

[0024] In some embodiments, the optical lens is a collimating lens; the optical path adjustment device includes a connector, which is connected to the side of the second adjustment member away from the optical lens along the first direction, the connector is used to insert the optical fiber, and the optical lens is used to collimate the light emitted from the optical fiber.

[0025] In some embodiments, the second adjusting member is provided with a first mounting hole, a second mounting hole and a notch, the first mounting hole and the second mounting hole respectively pass through the second adjusting member along the first direction, the optical lens is fixed to the first mounting hole, the connecting head is provided at the second mounting hole, the notch passes through one end of the second adjusting member away from the first adjusting member along the second direction, and is connected with the first mounting hole and the second mounting hole, the notch is used for the optical lens to be inserted into the first mounting hole, wherein the first direction is perpendicular to the second direction.

[0026] In some embodiments, the optical lens is a reflector, and a portion of the end face of the second adjustment member on one side along the first direction sinks in a direction away from the light-emitting end face to form a sinking area, the sinking area has a first positioning surface, a second positioning surface and a supporting surface, the bottom end of the optical lens is supported on the supporting surface, the end face of the optical lens on one side along the second direction abuts against the second positioning surface, and the end face of the optical lens on one side away from the light-emitting end face abuts against the first positioning surface along the first direction, wherein the first direction is perpendicular to the second direction.

[0027] The present application also provides a spectrum detector for a particle analyzer, comprising:

[0028] abutment;

[0029] an alignment positioning member, the alignment positioning member being arranged on the base;

[0030] And the optical path adjustment device described in any embodiment of the present application, the first adjustment member is connected to the base through the first connecting axis, and the first adjustment member and the second adjustment member can adjust the optical lens according to the position of the light emitted from the optical lens on the collimating positioning member.

[0031] In the optical path adjustment device provided by the embodiment of the present application, the intersection of the central axis of the first connecting axis and the central axis of the second connecting axis coincides with the center of the light-emitting end face of the optical lens, enabling concentric rotation. During the adjustment process, whether the first adjustment member and the second adjustment member rotate relative to the base around the first connecting axis, or the second adjustment member rotates relative to the first adjustment member around the second connecting axis, the optical lens always rotates around the center of its own light-emitting end face. In this way, light can always be emitted from the center of the light-emitting end face, effectively avoiding the position deviation of light caused by mechanical adjustment, and improving the stability and repeatability of the optical path. At the same time, the optical path adjustment device has a simple structure, which facilitates the quick and accurate adjustment of the optical lens, so that the actual light path conforms to the designed light path and reduces light path deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the structure of an optical path adjustment device according to an embodiment of the present application, wherein the optical lens shown is a collimating lens;

[0033] Figure 2 for Figure 1 A schematic diagram of the structure shown in another perspective;

[0034] Figure 3 This is a schematic structural diagram of an optical path adjustment device according to another embodiment of the present application, wherein the optical lens shown is a reflector;

[0035] Figure 4 for Figure 3 Schematic diagram of the structure shown from another perspective.

[0036] Description of Reference Numerals

[0037] 10-optical path adjustment device; 10a-gap;

[0038] 11-first adjusting member; 11a-first surface; 11b-third surface; 111-vertical support plate; 112-horizontal support plate; 12-second adjusting member; 12a-second surface; 12b-fourth surface; 12c-operating hole; 12d-first mounting hole; 12e-second mounting hole; 12f-notch; 12g-first positioning surface; 12h-second positioning surface; 12i-support surface; 13-optical lens; 13a-light-emitting end surface; 14-first connecting axis; 15-second connecting axis; 16-connecting member; 17-connecting head. DETAILED DESCRIPTION

[0039] In the description of the embodiments of the present application, it should be noted that the terms "height direction", "up", "down", "top", "bottom", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0040] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] An embodiment of the present application provides an optical path adjustment device 10 for use with a spectral detector.

[0042] A spectroscopic detector is a device used to analyze the optical properties of a substance, such as absorption, emission, and scattering. It determines the composition and structure of a sample by measuring the intensity of light at different wavelengths. Spectroscopic detectors are used in fields such as biology and medicine.

[0043] The embodiment of the present application further provides a spectrum detector, comprising a base, a collimating positioning member, and the optical path adjustment device 10 of any embodiment of the present application.

[0044] The embodiments of the present application are described by taking the application of a spectral detector to a particle analyzer as an example.

[0045] Particle analyzers can use a variety of technologies to measure the size, shape, concentration and other physical and chemical properties of particles.

[0046] Taking the particle analyzer using flow cytometry as an example, after the cells are labeled with fluorescent markers, multiple lasers of different wavelengths excite the same specific fluorescent dye, and the fluorescence spectra generated by the excitation will overlap. After collimation, spectroscopy, and filtering by the spectral detector, the fluorescence signals are separated into different wavelengths and converted into electrical signals. The fluorescence signals of different wavelengths are analyzed one by one by computer software to count the types and quantities of particles in the sample.

[0047] Exemplarily, the spectral detector also includes a dichroic mirror assembly, a side-scattering optical assembly and a photoelectric conversion module. After the laser excites the sample to be tested, the generated light is transmitted to the spectral detector through the optical fiber. After the light is collimated, it is transmitted to the dichroic mirror assembly. The dichroic mirror assembly includes two groups of dichroic mirrors. One group of dichroic mirrors receives the collimated light, transmits the fluorescence signal in the light to the other group of dichroic mirrors, and transmits the side-scattered light signal in the light to the side-scattering optical assembly. The other group of dichroic mirrors transmits the fluorescence signal to multiple photoelectric conversion modules after reflection and spectroscopy. The photoelectric conversion module filters the fluorescence signal and converts it into an electrical signal to count the type and quantity of particles in the sample, while the side-scattering optical assembly converts the side-scattered light signal into an electrical signal to reflect the shape and size of the particles.

[0048] It is understood that when light is collimated and flows into the collimated optical path of the dichroic mirror assembly, and when light flows through the dichroic mirror assembly to the photoelectric conversion module, high positional accuracy is required for the optical lenses used in the collimated optical path and the reflected optical path, so that the entire test optical path can be carried out according to the designed optical path, thereby ensuring the detection accuracy of the fluorescent signal flowing to the photoelectric conversion module. Once the collimated optical path or the reflected optical path is offset, the detection accuracy of the photoelectric conversion module will be greatly affected. Therefore, when performing spectral detection, it is necessary to adjust the position of the optical lens 13 so that the actual optical path matches the designed optical path.

[0049] The optical path adjustment device 10 is used to carry the optical lens 13 and adjust the position of the optical lens 13 in the spectrum detector.

[0050] See also Figures 1 to 4 The optical path adjustment device 10 includes a first adjustment member 11, a second adjustment member 12, an optical lens 13, a first connecting shaft 14 and a second connecting shaft 15.

[0051] The optical lens 13 is fixed to one side of the second adjusting member 12 along the first direction, and the optical lens 13 has a light emitting end surface 13 a.

[0052] The optical lens 13 is fixed to the second adjusting member 12, which means that the optical lens 13 and the second adjusting member 12 are relatively fixed and there is no relative movement between the two. For example, the optical lens 13 can be fixed to the second adjusting member 12 by bonding. The light-emitting end surface 13a refers to the surface of the optical lens 13 from which light is emitted. The light-emitting end surface 13a determines the direction of light transmission, collimation, and alignment with other optical components.

[0053] It can be understood that the light emitting end surface 13 a can be exposed to the second adjusting member 12 along the first direction, that is, the second adjusting member 12 will not block the light emitting end surface 13 a.

[0054] Exemplarily, the optical lens 13 can also have an entrance end face, which is arranged away from the exit end face 13a, and the light rays enter from the entrance end face and exit from the exit end face 13a.

[0055] It can be understood that the optical lens 13 can be used to reflect or transmit light rays, which can be determined according to the type of the optical lens 13. Exemplarily, when the optical lens 13 is a reflecting mirror, the exit end face 13a is used to reflect light rays, and when the optical lens 13 is a collimating lens, the exit end face 13a is used to transmit light rays.

[0056] The optical lens 13 can be a spherical lens, an aspherical lens, a cylindrical lens, a flat lens, etc., which is not limited herein. The exit end face 13a can be concave, convex or flat, which is also not limited herein.

[0057] The first direction can be any direction, and exemplarily, the first direction is perpendicular to the exit end face 13a, and the central axis of the exit end face 13a is parallel to the first direction.

[0058] The first connecting shaft 14 and the second connecting shaft 15 are respectively arranged on the first adjusting member 11, the first connecting shaft 14 is used to connect the first adjusting member 11 and the base of the spectrum detector, and the second connecting shaft 15 connects the first adjusting member 11 and the second adjusting member 12.

[0059] Please refer to Figure 2 and Figure 4 , the intersection of the central axis A1 of the first connecting shaft 14 and the central axis A2 of the second connecting shaft 15 coincides with the center O of the exit end face 13a, the first adjusting member 11 and the second adjusting member 12 can rotate relative to the base around the first connecting shaft 14, and the second adjusting member 12 can rotate relative to the first adjusting member 11 around the second connecting shaft 15.

[0060] The collimating positioning member is arranged on the base, the first adjusting member 11 is connected with the base through the first connecting shaft 14, and the first adjusting member 11 and the second adjusting member 12 can adjust the optical lens 13 according to the position of the light rays emitted from the optical lens 13 on the collimating positioning member.

[0061] The first adjusting member 11 can be positioned and connected with the base of the spectrum detector through the first connecting shaft 14, and the base is used as a detection platform to provide installation positions for the light path adjusting device 10, the dichroic mirror assembly, the side light optical assembly, the photoelectric conversion module, etc.

[0062] The second connecting shaft 15 connects the first adjusting member 11 and the second adjusting member 12, that is, the first adjusting member 11 and the second adjusting member 12 are connected through the second connecting shaft 15.

[0063] The first connecting shaft 14 and the second connecting shaft 15 are respectively arranged on the first adjusting part 11, that is, in the actual assembly process, the optical lens 13 can be matched with the second adjusting part 12 first, and then the first adjusting part 11 and the second adjusting part 12 can be connected through the second connecting shaft 15, and finally the optical path adjustment device 10 can be matched with the base through the first connecting shaft 14.

[0064] The first connecting shaft 14 and the second connecting shaft 15 can be directly integrally formed with the first adjusting member 11 or can be separately formed and then connected, which is not limited here. The first connecting shaft 14 and the second connecting shaft 15 can be located on adjacent sides of the first adjusting member 11.

[0065] The central axis of the first connecting shaft 14 refers to the geometric centerline of the first connecting shaft 14, which extends along the length of the first connecting shaft 14 and passes through the geometric center of the cross section of the first connecting shaft 14. For example, the first connecting shaft 14 is cylindrical, and the central axis of the first connecting shaft 14 is the line connecting the centers of the cross sections.

[0066] The central axis of the second connecting shaft 15 refers to the geometric centerline of the second connecting shaft 15, which extends along the length of the second connecting shaft 15 and passes through the geometric center of the cross section of the second connecting shaft 15. For example, the second connecting shaft 15 is cylindrical, and the central axis of the second connecting shaft 15 is the line connecting the centers of the cross sections.

[0067] The center of the light emitting end surface 13a refers to the geometric center of the light emitting end surface 13a. If the light emitting end surface 13a is circular, the center of the light emitting end surface 13a is the center of the circle. If the light emitting end surface 13a is rectangular or other polygonal, the center of the light emitting end surface 13a is the intersection of the lines connecting the midpoints of each opposite side.

[0068] It can be understood that the center of the light-emitting end surface 13a is the ideal passing point of the light. When the optical lens 13 is a collimating lens, the light after collimation passes through this center to ensure the accuracy of the optical path. When the optical lens 13 is a reflector, the light is reflected through this center. Therefore, when the intersection of the central axis of the first connecting axis 14 and the central axis of the second connecting axis 15 coincides with the center of the light-emitting end surface 13a, the position of the optical lens 13 can be adjusted with the first connecting axis 14 and the second connecting axis 15 as the rotation center respectively.

[0069] A collimator is a structure used to detect or indicate whether the light path is in the ideal path. The collimator can be a crosshair target with a scale, etc.

[0070] Exemplarily, the collimation positioning member is set on the base, and the collimation positioning member is located on the designed optical path. The collimation positioning member is provided with concentric rings of different diameters. When the light emitted from the light-emitting end face 13a is projected onto the annular surface, a light spot is formed on the annular surface. The size of the ring corresponds to the calibration range of the light spot, thereby judging whether the installation position of the optical lens 13 is qualified. If it is unqualified, the offset of the light spot is observed through the annular surface, and the position of the optical lens 13 is adjusted by the first adjustment member 11 and the second adjustment member 12 to make the actual optical path consistent with the designed optical path.

[0071] In this embodiment, the intersection of the central axis of the first connecting axis 14 and the central axis of the second connecting axis 15 coincides with the center of the light-emitting end surface 13a, that is, no matter how the first adjusting member 11 or the second adjusting member 12 rotates, the position of the light emitting point relative to the optical lens 13 itself will not change. When adjusting the angle of the optical lens 13, all adjustments are performed around the center point of the light-emitting end surface 13a, which can avoid complex multi-point calibration requirements and reduce optical path deviation caused by cumulative errors.

[0072] The first adjusting member 11 and the second adjusting member 12 can rotate relative to the base around the first connecting shaft 14, which means that the first adjusting member 11 and the second adjusting member 12 do not move relative to each other at this time, and the first adjusting member 11 and the second adjusting member 12 rotate relative to the base via the first connecting shaft 14. When the first adjusting member 11 and the second adjusting member 12 are rotated relative to the base via the first connecting shaft 14, since the central axis of the first connecting shaft 14 is the rotation axis, that is, the center of the light emitting end face 13a is located on the rotation axis, the angle of the optical lens 13 can be changed during rotation, but the position of the center of the light emitting end face 13a relative to the first connecting shaft 14 does not change. Therefore, the light still emerges from the center of the light emitting end face 13a, and no new uncertainties such as the overall offset of the light position are introduced during the adjustment process via the first connecting shaft 14.

[0073] The second adjusting member 12 can rotate relative to the first adjusting member 11 around the second connecting shaft 15, which means that the second adjusting member 12 can rotate relative to the first adjusting member 11 via the second connecting shaft 15. At this time, there is no relative movement between the first adjusting member 11 and the base. When the second adjusting member 12 is rotated relative to the first adjusting member 11 via the second connecting shaft 15, since the central axis of the second connecting shaft 15 is the rotation axis, that is, the center of the light-emitting end face 13a is on this rotation axis, the angle of the optical lens 13 can be changed during rotation, but the position of the center of the light-emitting end face 13a relative to the second connecting shaft 15 will not change. Therefore, the light will still be emitted from the center of the light-emitting end face 13a. In the adjustment process via the second connecting shaft 15, no new uncertainties such as the overall offset of the light position will be introduced.

[0074] For example, the setting of the first connecting shaft 14 can adjust the lateral offset of the light spot on the annular surface to return it to the ideal position; the setting of the second connecting shaft 15 can adjust the vertical offset of the light spot on the annular surface to return it to the ideal position.

[0075] In the optical path adjustment device 10 provided in the embodiment of the present application, the intersection of the central axis of the first connecting shaft 14 and the central axis of the second connecting shaft 15 coincides with the center of the light-emitting end face 13a of the optical lens 13, and can achieve concentric rotation. During the adjustment process, whether the first adjustment member 11 and the second adjustment member 12 rotate relative to the base around the first connecting shaft 14, or the second adjustment member 12 rotates relative to the first adjustment member 11 around the second connecting shaft 15, the optical lens 13 always rotates around the center of its own light-emitting end face 13a. In this way, the light can always be emitted from the center of the light-emitting end face 13a, effectively avoiding the light position offset caused by mechanical adjustment, and improving the stability and repeatability of the optical path. At the same time, the optical path adjustment device 10 has a simple structure, which is convenient for quickly and accurately adjusting the optical lens 13, so that the actual light path conforms to the designed light path, and reduces the light path offset.

[0076] Of course, the arrangement of the first connecting axis 14 and the second connecting axis 15 can also adapt the position of the first connecting axis 14 and the second connecting axis 15 to the center of the light emitting end surface 13a, so as to control the adjustment state by adjusting the external force or torque.

[0077] For some examples, see Figures 1 to 4 The first connecting axis 14 extends along the top and bottom directions of the optical path adjustment device 10, and the second connecting axis 15 extends along the second direction. The first direction, the second direction, and the top and bottom directions are perpendicular to each other.

[0078] Exemplarily, the first connecting shaft 14 and the second connecting shaft 15 are cylindrical.

[0079] In this embodiment, the central axis of the first connecting shaft 14 is parallel to the top and bottom directions, and the central axis of the second connecting shaft 15 is parallel to the second direction. When the first adjusting member 11 and the second adjusting member 12 rotate around the first connecting shaft 14, rotation adjustment along the horizontal direction can be achieved. When the second adjusting member 12 rotates around the second connecting shaft 15 relative to the first adjusting member 11, rotation adjustment along the top and bottom directions can be achieved. In this way, the two do not interfere with each other, and can quickly and accurately achieve all-round adjustment of the optical lens 13 to put it in the correct position without causing unnecessary deviations.

[0080] It should be noted that the top and bottom directions of the optical path adjustment device 10 are consistent with the top and bottom directions of the spectrum detector.

[0081] It is understood that the first adjusting member 11 is engaged with the base via the first connecting shaft 14. The first adjusting member 11 can abut against the base along the top-bottom direction. When the first adjusting member 11 and the second adjusting member 12 rotate relative to the base about the first connecting shaft 14, the first adjusting member 11 remains in abutment with the base, and the first and second adjusting members 11, 12 do not deviate in the top-bottom direction, thereby increasing adjustment accuracy. When the second adjusting member 12 rotates relative to the first adjusting member 11 about the second connecting shaft 15, the first adjusting member 11 remains relatively fixed to the base, and the second adjusting member 12 does not deviate in the horizontal direction.

[0082] It can be understood that during the rotation of the first adjusting member 11 around the first connecting shaft 14, the first connecting shaft 14 may rotate or not rotate, and there is no restriction here. During the rotation of the second adjusting member 12 around the second connecting shaft 15, the second connecting shaft 15 may rotate or not rotate, and there is no restriction here.

[0083] In some embodiments, the first connecting shaft 14 and the first adjusting member 11 are an integrated structure, which can reduce assembly complexity and improve assembly efficiency.

[0084] In other embodiments, the first connecting shaft 14 is a pin.

[0085] That is, in this embodiment, the first connecting shaft 14 functions as an independent pin that is inserted into the hole to achieve the fit between the first adjusting member 11 and the base. The first adjusting member 11 and the pin are formed separately, and the pin can adapt to different first adjusting members 11 without replacing the entire assembly, thus improving adaptability and reducing maintenance costs. Furthermore, the structural complexity of the first adjusting member 11 can be reduced, manufacturing precision can be increased, and errors can be reduced.

[0086] In some embodiments, the second connecting shaft 15 and the first adjusting member 11 are integrated into one structure, thereby reducing assembly complexity and improving assembly efficiency.

[0087] In other embodiments, the second connecting shaft 15 is a pin.

[0088] That is, in this embodiment, the second connecting shaft 15 acts as an independent pin that is inserted into the hole to achieve the matching of the second adjusting member 12 and the first adjusting member 11. The second adjusting member 12 and the pin are formed separately, and the pin can adapt to different second adjusting members 12 without replacing the entire assembly, which improves adaptability and reduces maintenance costs. At the same time, it can also reduce the structural complexity of the second adjusting member 12, increase manufacturing precision, and thus reduce errors.

[0089] In some embodiments, the optical path adjustment device 10 includes at least one connecting member 16 , which connects the first adjustment member 11 and the second adjustment member 12 . The connection state of the connecting member 16 includes a locked state and an unlocked state.

[0090] In the locked state, there is no relative movement between the second adjusting member 12 and the first adjusting member 11 .

[0091] In the unlocked state, the second adjusting member 12 can rotate relative to the first adjusting member 11 around the second connecting axis 15 .

[0092] In the locked state, the connecting member 16 applies a clamping force to the first adjusting member 11 and the second adjusting member 12, the second adjusting member 12 is fixed relative to the first adjusting member 11, and the second adjusting member 12 cannot rotate relative to the first adjusting member 11 around the second connecting axis 15; in the unlocked state, the connecting member 16 releases the clamping force on the first adjusting member 11 and the second adjusting member 12, allowing the second adjusting member 12 to rotate relative to the first adjusting member 11 around the second connecting axis 15, thereby achieving fine-tuning of the angle of the optical lens 13.

[0093] For example, when the first adjusting member 11 and the second adjusting member 12 need to move relative to the base, the connecting member 16 locks the second adjusting member 12 and the first adjusting member 11, so that the first adjusting member 11 and the second adjusting member 12 will not be offset due to vibration, thereby maintaining the adjustment stability. When the second adjusting member 12 needs to move relative to the first adjusting member 11, the connecting member 16 releases the rotational freedom of the second adjusting member 12, so that the second adjusting member 12 can rotate around the second connecting shaft 15. After the adjustment is completed, the first adjusting member 11 and the second adjusting member 12 are locked again.

[0094] It is understandable that, in the unlocked state, the connecting member 16 may still be connected to the first adjusting member 11 and the second adjusting member 12 , but it does not affect the rotation of the second adjusting member 12 relative to the first adjusting member 11 .

[0095] In this embodiment, by providing a connector 16 with switchable states, the adjustment accuracy and stability can be improved, the optical path drift caused by external vibration can be reduced, the controllable management of the adjustment freedom can be achieved, and the reliability and accuracy of the optical path adjustment can be improved.

[0096] For some examples, see Figures 1 to 4 The first adjusting member 11 has a first surface 11a, the second adjusting member 12 has a second surface 12a, the first surface 11a and the second surface 12a abut against each other along the second direction, and the second connecting shaft 15 and the connecting member 16 pass through the first surface 11a and the second surface 12a in sequence along the second direction respectively.

[0097] That is to say, the first adjusting member 11 and the second adjusting member 12 are tightly fitted through the first surface 11a and the second surface 12a, and the second connecting shaft 15 and the connecting member 16 both pass through these two surfaces along the second direction. In this way, during assembly, the first adjusting member 11 and the second adjusting member 12 can be matched along the same side of the second direction, which makes assembly simple and convenient and also facilitates the rotation of the second adjusting member 12.

[0098] The abutment between the first surface 11a and the second surface 12a can increase the contact area between the first adjusting member 11 and the second adjusting member 12. When the second adjusting member 12 rotates relative to the first adjusting member 11, the first surface 11a can always abut against the second surface 12a, reducing the gap 10a and shaking, increasing rotation stability, and ensuring adjustment accuracy.

[0099] In some embodiments, the connecting member 16 is a setscrew. This allows the user to easily lock or release the first and second adjusting members 11, 12 using a hand tool. To release the first and second adjusting members 11, 12, simply loosen the setscrew without causing the second adjusting member 12 to wobble relative to the first adjusting member 11, thereby increasing adjustment reliability. Furthermore, the setscrew has a simple structure and is easy to replace without requiring complex processing.

[0100] Of course, in some other embodiments, the connecting member 16 may also be a combination of a bolt and a nut.

[0101] The number of the connecting members 16 is not limited and can be one or more. For example, see Figure 1 and Figure 3 , the number of connecting members 16 is two.

[0102] In some embodiments, the optical path adjustment device 10 includes at least one fastener, which is used to connect the first adjustment member 11 and the base, and enables the first adjustment member 11 to switch between a fixed state relative to the base and a rotational state relative to the base.

[0103] In this embodiment, when the first adjusting member 11 and the second adjusting member 12 need to move relative to the base, the fastener releases the rotational freedom of the first adjusting member 11, so that the first adjusting member 11 can drive the second adjusting member 12 to rotate around the first connecting axis 14. After the adjustment is completed, the fastener locks the first adjusting member 11 and the base. When the second adjusting member 12 needs to rotate relative to the first adjusting member 11, the fastener locks the first adjusting member 11 relative to the base, so that only the second adjusting member 12 drives the optical lens 13 to move, which can improve the adjustment accuracy and stability, reduce the optical path drift caused by external vibration, realize controllable management of the adjustment freedom, and improve the reliability and accuracy of the optical path adjustment.

[0104] The specific structure of the fastener is not limited, and it can be a fastening screw or a combination of a bolt and a nut, which is not limited here. The number of fasteners is not limited, and can be one or more. For example, the number of fasteners is two.

[0105] For some examples, see Figure 2 and Figure 4 The first adjusting member 11 includes a third surface 11b, and the second adjusting member 12 includes a fourth surface 12b. The third surface 11b and the fourth surface 12b are arranged face to face along the top and bottom directions of the optical path adjusting device 10 and form a gap 10a. Part of the fastener protrudes from the top side of the third surface 11b and is located in the gap 10a.

[0106] In this embodiment, a gap 10a is formed between the third surface 11b and the fourth surface 12b along the top-bottom direction, that is, the first adjusting member 11 and the second adjusting member 12 do not contact each other along the top-bottom direction, but contact each other along the second direction. This simplifies the connection between the first adjusting member 11 and the second adjusting member 12. The provision of the gap 10a also allows the second adjusting member 12 to be avoided, allowing the second adjusting member 12 to drive the optical lens 13 to adjust its position in the top-bottom direction without interfering with the first adjusting member 11. At the same time, it also provides installation space for fasteners, allowing the fasteners and the first connecting shaft 14 to be connected to the base along the top-bottom direction.

[0107] In the embodiment where the first adjusting member 11 is provided with the first surface 11 a , the cross-sectional shape of the first adjusting member 11 along the top-bottom direction may be substantially formed into an L-shape.

[0108] The specific structure of the first adjusting member 11 is not limited.

[0109] For some examples, see Figures 1 to 4 The first adjusting member 11 includes a vertical support plate 111 and a horizontal support plate 112 connected to each other. The bottom end of the horizontal support plate 112 is used to abut the base, and the vertical support plate 111 extends from one side of the horizontal support plate 112 along the second direction toward the top side. In other words, the cooperation between the horizontal support plate 112 and the vertical support plate 111 makes the first adjusting member 11 generally L-shaped.

[0110] The first connecting shaft 14 passes through the horizontal support plate 112 ; the second connecting shaft 15 passes through the vertical support plate 111 and the second adjusting member 12 , and a gap 10 a is formed between the second adjusting member 12 and the horizontal support plate 112 along the top-bottom direction.

[0111] The first connecting shaft 14 cooperates with the horizontal support plate 112 and will not contact the second adjusting member 12, reducing the possibility of interference. The second connecting shaft 15 cooperates with the vertical support plate 111, and the second connecting shaft 15 passes through the vertical support plate 111 and the second adjusting member 12 in sequence along the second direction.

[0112] In this embodiment, the setting of the horizontal support plate 112 and the vertical support plate 111, on the one hand, can enable the horizontal support plate 112 to stably abut against the base and achieve positioning fit, so as to provide installation support for the second adjusting member 12 and increase assembly stability. On the other hand, it can also increase structural reliability, so that the second adjusting member 12 has sufficient rotation space, and the structure of the first adjusting member 11 is simple and easy to manufacture.

[0113] For some examples, see Figure 1 and Figure 3 The second adjusting member 12 is provided with at least one operating hole 12c, which passes through the second adjusting member 12 along the top-bottom direction. The operating hole 12c is used to accommodate an operating tool that drives the second adjusting member 12 to rotate or the first adjusting member 11 and the second adjusting member 12 to rotate.

[0114] In this embodiment, the setting of the operating hole 12c allows the user to insert an operating tool to achieve precise angle adjustment, reducing errors or damage to the precision mechanism caused by direct hand twisting. At the same time, the operating tool can also provide more stable torque input, reduce angle deviation caused by uneven force application, and increase operating comfort and reliability.

[0115] For some examples, see Figure 1 and Figure 2 , the optical lens 13 is a collimating lens.

[0116] The optical path adjustment device 10 includes a connector 17, which is connected to a side of the second adjustment member 12 away from the optical lens 13 along the first direction. The connector 17 is used to insert the optical fiber, and the optical lens 13 is used to collimate the light emitted from the optical fiber.

[0117] The collimating lens is used to convert the divergent light from the optical fiber into a parallel beam. After the sample is irradiated by the laser, the light is input to the spectrum detector through the optical fiber, and is collimated by the optical lens 13. The connector 17 is used to insert the optical fiber. The optical fiber and the optical lens 13 are both located in the second direction to facilitate the collimation process.

[0118] In this embodiment, the optical path adjustment device 10 can adjust the position of the optical lens 13 so that the light emitted from the optical fiber can be effectively collimated by the optical lens 13 to conform to the set optical path, thereby increasing the adjustment reliability.

[0119] Exemplarily, in this embodiment, the optical lens 13 may be an aspherical lens.

[0120] For some examples, see Figure 1 The second adjusting member 12 is provided with a first mounting hole 12d, a second mounting hole 12e and a notch 12f. The first mounting hole 12d and the second mounting hole 12e respectively penetrate the second adjusting member 12 along the first direction. The optical lens 13 is fixed to the first mounting hole 12d. The connecting head 17 is provided in the second mounting hole 12e. The notch 12f penetrates the end of the second adjusting member 12 away from the first adjusting member 11 along the second direction, and is connected with the first mounting hole 12d and the second mounting hole 12e. The notch 12f is used for the optical lens 13 to be inserted into the first mounting hole 12d.

[0121] In this embodiment, the setting of the notch 12f can, on the one hand, separate the first mounting hole 12d and the second mounting hole 12e, so that there is a certain distance between the optical fiber and the optical lens 13, which will not block the light and facilitate the light from the optical fiber to be emitted to the optical lens 13. On the other hand, the optical lens 13 can be inserted into the first mounting hole 12d through the notch 12f, which facilitates the cooperation between the optical lens 13 and the first mounting hole 12d and increases the installation reliability.

[0122] For some examples, see Figure 3 and Figure 4 , the optical lens 13 is a reflector.

[0123] Part of the end face of one side along the first direction of the second adjusting member 12 sinks in the direction away from the light emitting end face 13a to form a sinking area, the sinking area has a first positioning surface 12g, a second positioning surface 12h and a supporting surface 12i, the bottom end of the optical lens 13 is supported on the supporting surface 12i, the end face of one side along the second direction of the optical lens 13 abuts against the second positioning surface 12h, and the end face of one side of the optical lens 13 away from the light emitting end face 13a abuts against the first positioning surface 12g along the first direction.

[0124] Reflectors are used to reflect light to redirect the light path. Reflectors can be plane mirrors, reflecting prisms, etc.

[0125] The sinking area is used to position and support the optical lens 13. The sinking area refers to a portion of the end surface of one side of the second adjusting member 12 along the first direction that sinks downward to form an installation area, and the optical lens 13 can be positioned and installed through the installation area.

[0126] The supporting surface 12i can bear the bottom of the optical lens 13 and provide support. The second positioning surface 12h and the first positioning surface 12g can be used as positioning references. During assembly, the optical lens 13 is supported on the supporting surface 12i and is in contact with the second positioning surface 12h along the second direction and in contact with the first positioning surface 12g along the first direction. Thus, three-sided positioning is achieved, and the position of the optical lens 13 is locked, so that the position of the optical lens 13 on the second adjustment member 12 is fixed, thereby improving the assembly accuracy of the optical path adjustment device 10.

[0127] The optical lens 13 can be bonded to the first positioning surface 12g by bonding.

[0128] It is understood that the optical path adjustment device 10 of the present embodiment can be used to adjust the optical path of both a collimated optical path and a reflected optical path. The spectral detector may include multiple optical path adjustment devices 10, one of which is disposed upstream of the dichroic mirror assembly along the optical path and is used to cooperate with the optical fiber to collimate the light; and another optical path adjustment device 10 is disposed downstream of the dichroic mirror assembly along the optical path and is used to reflect the light.

[0129] In the description of this application, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine different embodiments or examples described in this application and features of different embodiments or examples without contradiction.

[0130] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An optical path adjustment device for a spectrum detector, characterized in that: include: a first adjusting member and a second adjusting member; an optical lens fixed to one side of the second adjusting member along the first direction, the optical lens having a light emitting end surface; A first connecting shaft and a second connecting shaft are respectively provided on the first adjusting member, the first connecting shaft is used to connect the first adjusting member and the base of the spectrum detector, and the second connecting shaft connects the first adjusting member and the second adjusting member; Among them, the intersection of the central axis of the first connecting axis and the central axis of the second connecting axis coincides with the center of the light-emitting end face, the first adjusting member and the second adjusting member can rotate relative to the base around the first connecting axis, and the second adjusting member can rotate relative to the first adjusting member around the second connecting axis.

2. The optical path adjustment device according to claim 1, characterized in that: The first connecting axis extends along the top-bottom direction of the optical path adjustment device, and the second connecting axis extends along the second direction, and the first direction, the second direction, and the top-bottom direction are perpendicular to each other. And / or, the first connecting shaft and the first adjusting member are an integrated structure, or the first connecting shaft is a pin; And / or, the second connecting shaft and the first adjusting member are an integrated structure, or the second connecting shaft is a pin shaft.

3. The optical path adjustment device according to claim 1, wherein: The optical path adjustment device includes at least one connecting member, the connecting member connecting the first adjustment member and the second adjustment member, and the connection state of the connecting member includes a locked state and an unlocked state; In the locked state, there is no relative movement between the second adjusting member and the first adjusting member; In the unlocked state, the second adjusting member can rotate relative to the first adjusting member around the second connecting axis.

4. The optical path adjustment device according to claim 3, characterized in that: The first adjusting member has a first surface, the second adjusting member has a second surface, the first surface and the second surface are in contact with each other along a second direction, the second connecting shaft and the connecting member pass through the first surface and the second surface in sequence along the second direction, and the first direction and the second direction are perpendicular to each other; And / or, the connecting member is a fastening screw.

5. The optical path adjustment device according to claim 1, characterized in that: The optical path adjustment device includes at least one fastener, which is used to connect the first adjustment member and the base, and enables the first adjustment member to switch between a fixed state relative to the base and a rotational state relative to the base.

6. The optical path adjustment device according to claim 5, characterized in that: The first adjusting member includes a third surface, the second adjusting member includes a fourth surface, the third surface and the fourth surface are arranged face to face along the top and bottom directions of the optical path adjusting device and form a gap, and part of the fastener protrudes from the top side of the third surface and is located in the gap, wherein the first direction is perpendicular to the top and bottom directions.

7. The optical path adjustment device according to any one of claims 1 to 6, characterized in that: The first adjusting member includes a vertical support plate and a horizontal support plate connected to each other, the bottom end of the horizontal support plate is used to abut against the base, and the vertical support plate extends from one side of the horizontal support plate along the second direction to the top side; The first connecting shaft is provided through the horizontal support plate; the second connecting shaft is provided through the vertical support plate and the second adjusting member, and a gap is formed between the second adjusting member and the horizontal support plate along the top-bottom direction, and the first direction, the second direction, and the top-bottom direction are perpendicular to each other. And / or, the second adjusting member is provided with at least one operating hole, the operating hole passes through the second adjusting member along the top-bottom direction, and the operating hole is used to accommodate an operating tool for driving the second adjusting member to rotate or the first adjusting member and the second adjusting member to rotate.

8. The optical path adjustment device according to claim 1, wherein: The optical lens is a collimating lens; the optical path adjustment device includes a connector, which is connected to the side of the second adjustment member away from the optical lens along the first direction, and the connector is used to insert the optical fiber, and the optical lens is used to collimate the light emitted from the optical fiber.

9. The optical path adjustment device according to claim 8, characterized in that: The second adjusting member is provided with a first mounting hole, a second mounting hole and a notch, the first mounting hole and the second mounting hole respectively pass through the second adjusting member along the first direction, the optical lens is fixed to the first mounting hole, the connecting head is provided in the second mounting hole, the notch passes through one end of the second adjusting member away from the first adjusting member along the second direction, and is connected with the first mounting hole and the second mounting hole, the notch is used for the optical lens to be inserted into the first mounting hole, wherein the first direction is perpendicular to the second direction.

10. The optical path adjustment device according to claim 1, wherein: The optical lens is a reflector, and part of the end face of one side along the first direction of the second adjustment member sinks in the direction away from the light-emitting end face to form a sinking area, and the sinking area has a first positioning surface, a second positioning surface and a supporting surface. The bottom end of the optical lens is supported on the supporting surface, and the end face of one side along the second direction of the optical lens abuts against the second positioning surface, and the end face of one side of the optical lens away from the light-emitting end face abuts against the first positioning surface along the first direction, wherein the first direction is perpendicular to the second direction.

11. A spectrum detector for a particle analyzer, characterized in that: include: abutment; an alignment positioning member, the alignment positioning member being arranged on the base; And the optical path adjustment device according to any one of claims 1 to 10, wherein the first adjustment member is connected to the base through the first connecting axis, and the first adjustment member and the second adjustment member can adjust the optical lens according to the position of the light emitted from the optical lens on the collimating positioning member.

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