Spectrometer reflector adjusting mechanism

Abstract

The utility model discloses a spectrograph reflector adjusting mechanism, and belongs to the technical field of spectrographs. In the spectrograph reflecting mirror adjusting mechanism, a reflecting mirror is fixed in an adjusting mirror frame, four abutting parts are evenly distributed on the edge of the face, close to the reflecting mirror, of a support, and a fixing nut of an adjusting bolt is fixedly connected with a first through hole of the adjusting mirror frame. The ends, provided with balls, of the four screws penetrate through the fixing nuts and the first through holes to abut against the four abutting parts respectively, the other ends of the four screws are connected with the adjusting nuts respectively, the at least two springs are arranged on the two opposite edges of the adjusting mirror frame and the support respectively, one ends of the springs are connected with the adjusting mirror frame, and the other ends of the springs are connected with the support. The four abutting parts comprise one fixed abutting part and three sliding abutting parts, the end, provided with the ball, of the screw rod is embedded into the fixed abutting part, and the size of the three sliding abutting parts in at least one direction parallel to the face, close to the reflecting mirror, of the support is larger than the diameter of the ball. The effect of improving the adjustment precision of the reflector is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of spectrometer, especially a spectrometer mirror adjusting mechanism. BACKGROUND

[0002] Spectrometer is a kind of instrument for measuring the wavelength distribution of light or other electromagnetic radiation, in spectrometer, mirror is one of the core components of optical system, its function is mainly the directional control of light, and by adjusting the angle of mirror, the incident light can be reflected to different positions, and the angle deviation of mirror will cause the light path to deviate, that is, the angle adjustment precision of mirror plays a key role in the system performance of spectrometer and experimental operation efficiency.

[0003] There is a spectrometer mirror adjusting mechanism in the related art, including mirror, mirror frame, support and four adjusting bolts, the mirror is located in the mirror frame, the edge of the mirror frame is uniformly arranged with four through holes, four threaded holes are correspondingly arranged on the support, the screw rod of each adjusting bolt is threadedly connected with the threaded hole on the support through the through hole on the mirror frame, and the angle of the mirror frame is changed by screwing in / out the screw rod.

[0004] In the process of implementing the utility model, the inventor finds that the thread gap of the bolt can cause backlash during fine adjustment in the related art, and the bolt can also cause angle drift due to stress relaxation or thread wear, so it is difficult to achieve high-precision angle positioning. UTILITY MODEL CONTENTS

[0005] The utility model embodiment provides a kind of spectrometer mirror adjusting mechanism, can solve the problem that spectrometer mirror adjusting mechanism in the related art is difficult to achieve high-precision angle positioning.The technical solution is as follows:

[0006] According to the first aspect of the utility model, a kind of spectrometer mirror adjusting mechanism is provided, and the spectrometer mirror adjusting mechanism includes: mirror assembly, support, four adjusting bolts and elastic component;

[0007] The mirror assembly includes mirror and adjusting mirror frame, and the mirror is fixed in the adjusting mirror frame;

[0008] The support is located at one side of the mirror light entrance surface, the support has an opening opposite to the light entrance surface, and the edge of the surface close to the mirror is uniformly arranged with four abutting portions;

[0009] Each of the four adjusting bolts comprises an adjusting nut, a fixing nut and a screw rod, one end of the screw rod is provided with a ball, the adjusting frame is provided with four first through holes arranged uniformly along the edge of the adjusting frame, the fixing nut is fixedly connected with the first through hole, one end of the four screw rods provided with the ball respectively penetrates the fixing nut and the first through hole and abuts against the four abutting portions, the other end of the four screw rods is respectively connected with the adjusting nut;

[0010] The elastic assembly comprises at least two springs, one end of each of the springs is connected with the adjusting frame, and the other end of each of the springs is connected with the support, and at least two springs are arranged on two opposite edges of the adjusting frame and the support respectively.

[0011] The four abutting portions comprise one fixed abutting portion and three sliding abutting portions, one end of the screw rod provided with the ball is embedded in the fixed abutting portion, and the three sliding abutting portions are larger than the diameter of the ball in at least one direction parallel to the side of the support close to the mirror.

[0012] Optionally, the side of the support close to the mirror is rectangular, and the four abutting portions are located at four corners of the side of the support close to the mirror respectively.

[0013] The fixed abutting portion is a positioning groove, and the ball is clamped in the positioning groove.

[0014] The three sliding abutting portions comprise one flat-bottomed groove and two strip-shaped grooves, the opening end of the strip-shaped groove is wider than the bottom of the strip-shaped groove, the two strip-shaped grooves are located at two opposite corners of the side of the support close to the mirror, the extension directions of the two strip-shaped grooves are perpendicular to each other, and the ball abuts against the side wall of the strip-shaped groove.

[0015] The flat-bottomed groove is larger than the size of the ball in at least two different directions on the plane of the side of the support close to the mirror, and the ball abuts against the bottom surface of the flat-bottomed groove.

[0016] Optionally, the three sliding abutting portions are all strip-shaped grooves, the opening end of the strip-shaped groove is wider than the bottom of the strip-shaped groove, the two strip-shaped grooves are located at two opposite corners of the side of the support close to the mirror, the extension directions of the two strip-shaped grooves are perpendicular to each other, and the ball abuts against the side wall of the strip-shaped groove.

[0017] The extension direction of another strip-shaped groove of the three strip-shaped grooves is the diagonal direction of the side of the support close to the mirror.

[0018] Optionally, the side of the support frame close to the mirror is rectangular, and the four abutting portions are located at four corners of the side of the support frame close to the mirror, respectively.

[0019] The fixed abutting portion is a positioning groove, and the ball is clamped in the positioning groove.

[0020] The three sliding abutting portions include a flat-bottomed groove and two sliding rails, each of the sliding rails is composed of two cylindrical pins fixed oppositely on the support frame, the two sliding rails are located at two opposite corners of the side of the support frame close to the mirror, the extending directions of the two sliding rails are perpendicular to each other, and the ball abuts against the side wall of the sliding rail.

[0021] The size of the flat-bottomed groove in at least two different directions on the plane of the side of the support frame close to the mirror is greater than the size of the ball, and the ball abuts against the bottom surface of the flat-bottomed groove.

[0022] Optionally, the three sliding abutting portions are three sliding rails, each of the sliding rails is composed of two cylindrical pins fixed oppositely on the support frame, the two sliding rails are located at two opposite corners of the side of the support frame close to the mirror, the extending directions of the two sliding rails are perpendicular to each other, the extending direction of the other sliding rail is the diagonal direction of the support frame, and the ball abuts against the side wall of the sliding rail.

[0023] Optionally, the elastic assembly further includes eight fixed cylindrical pins and four springs, and two ends of each spring are connected with a fixed cylindrical pin, respectively.

[0024] The side of the support frame close to the mirror has two support frame grooves and two pressing plates, each pressing plate is detachably connected with the support frame groove, two fixed cylindrical pins are fixedly connected in each support frame groove, the two fixed cylindrical pins are located below the pressing plate, and four fixed cylindrical pins are fixedly connected on the side of the adjusting mirror frame away from the mirror.

[0025] Optionally, the spectrometer mirror adjusting mechanism further includes a baffle and at least two connecting screws, the baffle is located on the side of the mirror away from the light entrance surface, the baffle has at least two screw through holes, the adjusting mirror frame has at least two threaded holes, and the at least two screws are connected with the adjusting mirror frame through the at least two screw through holes, respectively.

[0026] Optionally, the support frame is a double-light-room support frame, the double-light-room support frame has an opening opposite to the light entrance surface, and the double-light-room support frame includes a partition plate, the partition plate divides the opening into two sub-openings.

[0027] Optionally, the spectrometer mirror adjusting mechanism further comprises two spherical structures, two arc-shaped grooves are respectively arranged on two opposite surfaces of the adjusting mirror frame and the support, and each of the two spherical structures is arranged in the arc-shaped groove of the adjusting mirror frame and the support.

[0028] Optionally, the adjusting mirror frame further comprises four jackscrews, and the adjusting mirror frame further comprises four jack screw holes, each of the jack screw holes is communicated with the outer circumferential surface of the adjusting mirror frame and the first through hole, and the jackscrew passes through the jack screw hole and abuts against the fixing nut.

[0029] The technical scheme provided by the embodiment of the utility model has the beneficial effects that:

[0030] The spectrometer mirror adjusting mechanism provided by the embodiment of the application has the following beneficial effects: the mirror is fixed in the adjusting mirror frame, the edges of the surface of the support close to the mirror are uniformly arranged with four abutting portions, the fixing nut of the adjusting bolt is fixedly connected with the first through hole of the adjusting mirror frame, one end of the four screws with the ball abuts against the four abutting portions through the fixing nut and the first through hole, the other end of the four screws is connected with the adjusting nut, at least two springs are arranged on the two opposite edges of the adjusting mirror frame and the support, one end of the spring is connected with the adjusting mirror frame, and the other end of the spring is connected with the support, the four abutting portions comprise one fixed abutting portion and three sliding abutting portions, one end of the screw with the ball is embedded in the fixed abutting portion, and the size of the three sliding abutting portions in at least one direction parallel to the surface of the support close to the mirror is greater than the diameter of the ball. The adjusting bolt embedded in the fixed abutting portion is taken as an anchor point, the adjusting bolt on the three sliding abutting portions is finely adjusted through the adjusting nut, so that the height of the adjusting mirror frame is adjusted, and the adjusting freedom of the mirror is ensured. The ball of the adjusting bolt can roll on the sliding abutting portion, the adjusting resistance is reduced, and the displacement sensitivity is improved. The symmetrically distributed springs can prevent the adjusting mirror frame from falling off and provide stability, so that the accuracy of the adjusting angle of the mirror is further ensured, and the beneficial effect of improving the adjusting accuracy of the mirror is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.

[0032] Figure 1 It is a structure schematic view of the spectrometer mirror adjusting mechanism shown in the embodiment of the utility model;

[0033] Figure 2 It is Figure 1Structure diagram of the spectrometer mirror adjusting mechanism from another angle;

[0034] Figure 3 is Figure 1 Structure diagram of the spectrometer mirror adjusting mechanism from another angle;

[0035] Figure 4 is Figure 1 Structure diagram of the spectrometer mirror adjusting mechanism from another angle;

[0036] Figure 5 is Figure 4 Structure diagram of the spectrometer mirror adjusting mechanism from another angle;

[0037] Figure 6 is Figure 1 Structure diagram of the spectrometer mirror adjusting mechanism from another angle;

[0038] Figure 7 is Figure 6 Structure diagram of the spectrometer mirror adjusting mechanism from another angle;

[0039] Figure 8 is Figure 1 Structure diagram of the spectrometer mirror adjusting mechanism from another angle;

[0040] Figure 9 is Figure 8 Structure diagram of the spectrometer mirror adjusting mechanism from another angle.

[0041] Explanation of reference signs:

[0042] 1 - mirror assembly, 11 - mirror, 12 - adjusting frame, 121 - first through hole, 122 - set screw;

[0043] 2 - bracket, 21 - opening, 211 - sub-opening, 22 - abutting part, 221 - fixed abutting part, 2211 - positioning groove, 222 - sliding abutting part, 2221 - flat-bottomed groove, 2222 - strip-shaped groove, 2223 - slide rail, 2223y - cylindrical pin, 2223a - slide rail, 2223b - slide rail, 23 - bracket groove, 24 - pressing plate, 25 - partition plate;

[0044] 3 - adjusting bolt, 31 - adjusting nut, 32 - fixed nut, 33 - screw rod, 34 - ball;

[0045] 4 - elastic assembly, 41 - spring, 42 - fixed cylindrical pin;

[0046] 5 - baffle, 51 - connecting screw;

[0047] 6 - spherical structure.

[0048] The above drawings have shown the specific embodiments of the present application, which will be described in more detail hereinafter. These drawings and the written description are not intended to limit the scope of the present application concept in any way, but to illustrate the present application concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be described in more detail hereinafter with reference to the drawings.

[0050] Figure 1 is a structural schematic view of a spectrometer mirror adjusting mechanism according to an embodiment of the present application, Figure 2 is a structural schematic view of another angle of the spectrometer mirror adjusting mechanism according to an embodiment of the present application, Figure 3 is Figure 1 the top view of the support in the spectrometer mirror adjusting mechanism shown in Figure 1 , Figure 2 and Figure 3 , the spectrometer mirror adjusting mechanism comprises: a mirror assembly 1, a support 2, four adjusting bolts 3 and an elastic assembly 4.

[0051] The mirror assembly 1 comprises a mirror 11 and an adjusting mirror frame 12, and the mirror 11 is fixed in the adjusting mirror frame 12.

[0052] The support 2 is located at one side of the light entrance surface of the mirror 11, the support 2 has an opening 21 opposite to the light entrance surface, and the edge of the side of the support 2 close to the mirror 11 is uniformly arranged with four abutting portions 22.

[0053] Each of the four adjusting bolts 3 comprises an adjusting nut 31, a fixing nut 32 and a screw rod 33, one end of the screw rod 33 has a ball 34, the adjusting mirror frame 12 has four first through holes 121 uniformly arranged along the edge of the adjusting mirror frame, the fixing nut 32 is fixedly connected with the first through holes 121, one end of the four screw rods 33 with the ball 34 respectively passes through the fixing nut 32 and the first through holes 121 and abuts at the four abutting portions 22, and the other end of the four screw rods 33 is respectively connected with the adjusting nut 31.

[0054] The elastic assembly 4 comprises at least two springs 41, one end of each of the springs 41 is connected with the adjusting mirror frame 12, the other end of each of the springs 41 is connected with the support 2, and the at least two springs 41 are respectively arranged on two opposite sides of the adjusting mirror frame 12 and the support 2.

[0055] One of the four abutments 22 is a fixed abutment 221 and the other three are sliding abutments 222. One end of a screw 33 with a ball 34 is inserted into the fixed abutment 221, and the three sliding abutments 222 have a size greater than the diameter of the ball 33 in at least one direction parallel to the side of the support 2 close to the mirror 11.

[0056] The fixed abutment 221 is formed by the rigid insertion of the ball 34 to serve as an anchor point, ensuring that the pose of the mirror 11 changes during adjustment always with the anchor point as the origin, avoiding overall drift. The other three balls 34 can roll in the three sliding abutments 222 with limited restrictions, so that a small rotation of the adjusting nut 31 can be converted into a displacement of the mirror frame 12. By adjusting the adjusting bolts 3 abutting on the three sliding abutments 222, the pitch, yaw and roll of the mirror 11 can be independently controlled, improving the accuracy of the mirror 11 adjustment. In addition, the pre-compression force of the spring 41 keeps the ball 34 always tightly pressed against the abutment 22, and the spring 41 can also prevent vibration interference from being directly transmitted to the mirror 11. The tension of the spring 41 eliminates the thread gap of the adjusting bolt 3, prevents the mirror frame 12 from falling off, compensates for temperature drift, and further improves the reliability and accuracy of the spectrometer mirror adjustment mechanism.

[0057] In summary, the spectrometer mirror adjustment mechanism provided by the embodiments of the present application has the following advantages. The mirror is fixed in the adjusting mirror frame, the edges of the side of the support close to the mirror are uniformly arranged with four abutments, the fixed nut of the adjusting bolt is fixedly connected with the first through hole of the adjusting mirror frame, one end of the ball of the four screws is inserted into the four abutments through the fixed nut and the first through hole, the other end of the four screws is connected with the adjusting nut, at least two springs are arranged on the two opposite sides of the adjusting mirror frame and the support, one end of the spring is connected with the adjusting mirror frame, and the other end of the spring is connected with the support. One of the four abutments is a fixed abutment and the other three are sliding abutments, one end of a screw with a ball is inserted into the fixed abutment, and the three sliding abutments have a size greater than the diameter of the ball in at least one direction parallel to the side of the support close to the mirror. The adjusting bolt with the fixed abutment embedded as an anchor point, the adjusting nut is used to fine-tune the adjusting bolt on the three sliding abutments, thereby adjusting the height of the adjusting mirror frame, and ensuring the adjustment freedom of the mirror. The ball of the adjusting bolt can roll on the sliding abutment, reducing the adjustment resistance and improving the displacement sensitivity. The symmetrically distributed springs can prevent the adjusting mirror frame from falling off while providing stability, thereby further ensuring the accuracy of the mirror adjustment angle, achieving the beneficial effect of improving the mirror adjustment accuracy.

[0058] Figure 4 is Figure 1 Another top view of the support of the spectrometer mirror adjustment mechanism is shown in Figure 1 and Figure 4As shown, the side of the support 2 close to the mirror is rectangular, and the four abutting portions are respectively located at the four corners of the side of the support 2 close to the mirror, the fixed abutting portion is a positioning groove 2211, the ball 34 is clamped in the positioning groove 2211, the position change of the mirror 11 during the adjustment process is always taken as the origin, the overall drift is avoided, and the positioning groove 2211 can be a V-shaped groove or a hemispherical pit, and the embodiments of the utility model are not limited here.

[0059] The three sliding abutting portions include a flat-bottomed groove 2221 and two strip-shaped grooves 2222, the opening end width of the strip-shaped groove 2222 is greater than the bottom width of the strip-shaped groove 2222, the two strip-shaped grooves 2222 are located at opposite corners of the side of the support 2 close to the mirror, and the extension directions of the two strip-shaped grooves 2222 are perpendicular to each other, the ball 34 abuts against the side wall of the strip-shaped groove 2222, and the ball 34 rolls on the side wall of the strip-shaped groove 2222 during the adjustment of the adjusting bolt. The size of the flat-bottomed groove 2221 in at least two different directions on the plane of the side of the support 2 close to the mirror 11 is greater than the size of the ball 34, the ball 34 abuts against the bottom surface of the flat-bottomed groove 2221, and the ball 34 rolls on the bottom surface of the flat-bottomed groove 2221 during the adjustment of the adjusting bolt. The bottom surface of the flat-bottomed groove 2221 can be circular, square or other shapes, Figure 3 As shown in the figure, the bottom surface of the flat-bottomed groove is circular, and the specific shape is not limited in the embodiments of the utility model.

[0060] Figure 5 is Figure 4 As shown in the figure, the bottom surface of the flat-bottomed groove is circular, and the specific shape is not limited in the embodiments of the utility model. Figure 1 and Figure 5 As shown, the three sliding abutting portions are all strip-shaped grooves, the opening end width of the strip-shaped groove is greater than the bottom width of the strip-shaped groove, the strip-shaped groove includes two strip-shaped grooves 2222a and one strip-shaped groove 2222b, the two strip-shaped grooves 2222a are located at opposite corners of the side of the support 2 close to the mirror, and the extension directions of the two strip-shaped grooves 2222a are perpendicular to each other, the ball 34 abuts against the side wall of the strip-shaped groove 2222a, and the extension direction of the other strip-shaped groove 2222b in the three strip-shaped grooves is the diagonal direction of the side of the support 2 close to the mirror 11. Compared with the flat-bottomed groove, the strip-shaped groove 2222b limits the moving direction of the ball 34 along the diagonal direction of the rectangular support plane, and the adjustment accuracy of the mirror can be further improved.

[0061] Figure 6 is Figure 1 As shown in the figure, the bottom surface of the flat-bottomed groove is circular, and the specific shape is not limited in the embodiments of the utility model. Figure 6As shown, the side of the bracket 2 closest to the reflector is rectangular, and the four abutting parts are located at the four corners of the side of the bracket closest to the reflector. The fixed abutting part is a positioning groove 2211, and the ball is engaged in the positioning groove 2211 to ensure that the position change of the reflector during the adjustment process is always based on this point as the origin, avoiding overall drift. The positioning groove 2211 can be a V-shaped groove or a hemispherical pit, and this embodiment of the utility model is not limited here.

[0062] The three sliding contact parts include a flat-bottomed groove 2221 and two slide rails 2223. Each slide rail 2223 consists of two cylindrical pins 2223y fixed opposite to each other on the bracket 2. The two slide rails 2223 are located at two opposite corners on the side of the bracket 2 near the reflector, and the extending directions of the two slide rails 2223 are perpendicular to each other. The ball abuts against the side wall of the slide rail 2223. The flat-bottomed groove 2221 has dimensions larger than the ball in at least two different directions on the plane of the side of the bracket 2 near the reflector. The ball abuts against the bottom surface of the flat-bottomed groove. When adjusting the adjusting bolt, the ball can roll on the bottom surface of the flat-bottomed groove 2221. The bottom surface of the flat-bottomed groove 2221 can be circular, square, or other shapes. Figure 6 The image shows a circular, flat-bottomed groove; however, the specific shape of this embodiment is not limited here.

[0063] Figure 7 yes Figure 6 The top view of another type of bracket in the spectrometer mirror adjustment mechanism is shown below. Figure 7 As shown, the three sliding contact parts are three slide rails, including two slide rails 2223a and one slide rail 2223b. Each slide rail 2223 consists of two cylindrical pins 2223y fixed opposite to each other on the bracket. The two slide rails 2223a are located at two opposite corners on the side of the bracket 2 closest to the reflector, and the extending directions of the two slide rails 2223a are perpendicular to each other. The extending direction of the other slide rail 2223b is along the diagonal direction of the bracket. The ball abuts against the side wall of the slide rail 2223b. Compared with the flat-bottomed groove, the slide rail 2223b defines the movement direction of the ball along the diagonal direction of the rectangular bracket plane, which can further refine the adjustment accuracy of the reflector.

[0064] like Figure 1As shown, the elastic assembly further comprises eight fixed cylindrical pins 42 and four springs 41, two ends of each spring 41 are connected with a fixed cylindrical pin 42 respectively, one side of the support 2 close to the mirror 11 is provided with two support grooves 23 and two pressing plates 24, each pressing plate 24 is detachably connected with the support groove 23, two fixed cylindrical pins 42 are fixedly connected in each support groove 23, and the two fixed cylindrical pins 42 are located below the pressing plate 24, and four fixed cylindrical pins 42 are fixedly connected on the side of the adjusting frame 12 away from the light entrance surface of the mirror 11. That is, on each of the two opposite edges of the adjusting frame 12, two springs 41 are connected through the fixed cylindrical pins 42. Since the spring has the functions of anti-vibration stability, gap elimination, temperature compensation and the like, the arrangement of two springs 41 on each edge can further improve the stability and adjustment accuracy of the spectrometer mirror adjusting mechanism. In addition, the pressing plate 24 and the support groove 23 can be connected by screws or other clamping connections, and the embodiments of the utility model are not limited herein.

[0065] As shown in Figure 1 The spectrometer mirror adjusting mechanism further comprises a baffle 5 and at least two connecting screws 51, the baffle 5 is located on the side of the mirror 11 away from the light entrance surface, the baffle 5 is provided with at least two screw through holes, and the adjusting frame 12 is provided with at least two threaded holes, and the at least two connecting screws 51 are respectively screwed into the threaded holes of the adjusting frame 12 through the at least two screw through holes. Figure 1 The number of connecting screws shown in the figure is four, and the number of connecting screws can also be other numbers, and the embodiments of the utility model are not limited herein. The baffle 5 abuts against the side of the mirror 11 away from the light entrance surface, so as to support the mirror and make the mirror more stable, Figure 1 The baffle shown in the figure is rectangular, and the baffle can also be circular or other shapes, and the specific shape of the baffle is not limited herein.

[0066] As shown in Figure 2 The support 2 is a double-light-chamber support, the double-light-chamber support is provided with an opening 21 opposite to the light entrance surface, and the double-light-chamber support comprises a partition plate 25, the opening 21 is divided into two sub-openings 211 by the partition plate 25. The incident light is divided into two beams of light in the double-light-chamber support and is incident on the mirror, the two beams of light can be compared through the partition plate, and the two beams of light can also be reflected to different positions.

[0067] As shown in Figure 2 The spectrometer mirror adjusting mechanism further comprises two spherical structures 6, and the two opposite surfaces of the adjusting frame 12 and the support 2 are respectively provided with two arc-shaped grooves 26. Figure 2The spherical structure 6 is arranged in the arc-shaped groove of the adjusting frame 12 and the support 2 respectively, and the spherical structure 6 can rotate in the two arc-shaped grooves, so that the spherical structure 6 rotates when the pitch or the deflection angle of the adjusting frame 12 is adjusted, and the adjusting process of the adjusting frame 12 is more smooth.

[0068] As shown in Figure 2 The adjusting frame 12 further comprises four jackscrews 122, and the adjusting frame 12 further has four jack screw holes, each of which is communicated with the outer circumferential surface of the adjusting frame 12 and the first through hole, and the jackscrew 122 is in abutment with the fixing nut 32 by penetrating the jack screw hole. The jackscrew 122 is used for fixing the fixing nut 32.

[0069] Figure 8 As shown in Figure 1 The adjusting mechanism of the spectrometer mirror is shown in another angle, as shown in Figure 8 L1 is the distance between the two adjusting bolts 3 on the side of the mirror away from the light entrance surface, and L2 is the distance between the two adjusting bolts 3 on the side of the mirror close to the light entrance surface. When the adjusting frame 12 is parallel to the side of the support 2 close to the mirror, L1=L2, and when the side of the adjusting frame 12 is inclined downward to the direction of the support 2, L2<L1. Figure 9 As shown in Figure 8 The adjusting mechanism of the spectrometer mirror is shown in another angle, as shown in

[0070] Optionally, the spectrometer in the embodiment of the utility model can be an ultrahigh resolution spectrometer, and the ultrahigh resolution spectrometer generally refers to a spectrometer with a wavelength resolution reaching the order of picometer (pm). The pitch, yaw and roll of the mirror need to be controlled in the level of micro-radian, wherein the pitch refers to the angle deviation in the vertical plane, which causes the light beam to deviate upward and downward; the yaw refers to the angle deviation in the horizontal plane, which causes the light beam to deviate left and right; and the roll refers to the deviation of rotation around the optical axis, which can introduce astigmatism or light beam distortion. The adjusting mechanism of the spectrometer mirror in the embodiment of the utility model needs to reach the above standard, and a piezoelectric screw or a fine adjustment screw pair 100TPI can be used as the adjusting bolt. The piezoelectric screw can be a piezoelectric rotary drive screw, a piezoelectric motor (such as an ultrasonic motor or a step-by-step piezoelectric motor) directly drives the adjusting nut to rotate, and pushes the fixed screw shaft to move axially, which can realize active control in the level of micrometer or even nanometer. The fine adjustment screw pair 100TPI refers to an adjusting bolt with 100 threads per inch, and the screw rotates one round to push 0.254mm, which is suitable for small displacement adjustment. The adjusting bolt in the embodiment of the utility model can also be other models, which is not limited in the embodiment of the utility model.

[0071] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A spectrograph mirror adjustment mechanism characterized by, The spectrometer mirror adjusting mechanism comprises a mirror assembly, a bracket, four adjusting bolts and an elastic assembly; The mirror assembly comprises a mirror and an adjusting mirror frame, and the mirror is fixed in the adjusting mirror frame; The bracket is located on one side of the light entrance surface of the mirror, the bracket has an opening opposite to the light entrance surface, and the bracket is uniformly provided with four abutting portions near the edge of the side of the mirror; Each of the four adjusting bolts comprises an adjusting nut, a fixing nut and a screw rod, one end of the screw rod is provided with a ball, the adjusting mirror frame is uniformly provided with four first through holes along the edge of the adjusting mirror frame, the fixing nut is fixedly connected with the first through hole, and the four screw rods are respectively connected with the adjusting nut through the fixing nut and the first through hole and abut against the four abutting portions; The elastic assembly comprises at least two springs, one end of each spring is connected with the adjusting mirror frame, and the other end of each spring is connected with the bracket, and at least two springs are arranged on two opposite sides of the adjusting mirror frame and the bracket respectively; The four abutting portions comprise one fixed abutting portion and three sliding abutting portions, one end of the screw rod with the ball is embedded in the fixed abutting portion, and the three sliding abutting portions are larger than the diameter of the ball in at least one direction parallel to the side of the bracket close to the mirror.

2. The spectrometer mirror adjustment mechanism of claim 1, wherein, The side of the bracket close to the mirror is rectangular, and the four abutting portions are respectively located at four corners of the side of the bracket close to the mirror; The fixed abutting portion is a positioning groove, and the ball is clamped in the positioning groove; The three sliding abutting portions comprise a flat-bottomed groove and two strip-shaped grooves, the opening end width of the strip-shaped groove is greater than the bottom width of the strip-shaped groove, the two strip-shaped grooves are located at two opposite corners of the side of the bracket close to the mirror, the extension directions of the two strip-shaped grooves are perpendicular to each other, and the ball abuts against the side wall of the strip-shaped groove; The flat-bottomed groove is larger than the size of the ball in at least two different directions on the plane of the side of the bracket close to the mirror, and the ball abuts against the bottom surface of the flat-bottomed groove.

3. The spectrometer mirror adjustment mechanism of claim 2, wherein, The three sliding abutting portions are strip-shaped grooves, the opening end width of the strip-shaped groove is greater than the bottom width of the strip-shaped groove, the two strip-shaped grooves are located at two opposite corners of the side of the bracket close to the mirror, the extension directions of the two strip-shaped grooves are perpendicular to each other, and the ball abuts against the side wall of the strip-shaped groove; The extension direction of another strip-shaped groove in the three strip-shaped grooves is the diagonal direction of the side of the bracket close to the mirror.

4. The spectrometer mirror adjustment mechanism of claim 1, wherein, The side of the bracket close to the mirror is rectangular, and the four abutting portions are respectively located at four corners of the side of the bracket close to the mirror; The fixed abutting portion is a positioning groove, and the ball is clamped in the positioning groove; The three sliding contact parts include one flat-bottomed groove and two slide rails, each of which is composed of two cylindrical pins fixed oppositely on the support, the two slide rails are located at two opposite corners of the side of the support close to the mirror, and the extending directions of the two slide rails are perpendicular to each other, and the ball is in contact with the side wall of the slide rail. The size of the flat-bottomed groove in at least two different directions on the plane of the side of the support close to the mirror is greater than the size of the ball, and the ball is in contact with the bottom surface of the flat-bottomed groove.

5. The spectrometer mirror adjustment mechanism of claim 4, wherein, The three sliding contact parts are three slide rails, each of which is composed of two cylindrical pins fixed oppositely on the support, the two slide rails are located at two opposite corners of the side of the support close to the mirror, and the extending directions of the two slide rails are perpendicular to each other, and the ball is in contact with the side wall of the slide rail.

6. The spectrometer mirror adjustment mechanism of claim 1, wherein, The elastic assembly further comprises eight fixed cylindrical pins and four springs, and two ends of each spring are connected with a fixed cylindrical pin, respectively. The side of the support close to the mirror has two support grooves and two pressing plates, each pressing plate is detachably connected with the support groove, two fixed cylindrical pins are fixedly connected in each support groove, the two fixed cylindrical pins are located below the pressing plate, and the side of the adjusting frame away from the mirror has four fixed cylindrical pins.

7. The spectrometer mirror adjustment mechanism of claim 1, wherein, The mirror adjusting mechanism of the spectrometer further comprises a baffle and at least two connecting screws, the baffle is located on the side of the mirror away from the light entrance surface, the baffle has at least two screw through holes, the adjusting frame has at least two threaded holes, and the at least two screws are connected with the adjusting frame through the at least two screw through holes, respectively.

8. The spectrometer mirror adjustment mechanism of claim 1, wherein, The support is a double-light-chamber support, the double-light-chamber support has an opening opposite to the light entrance surface, and the double-light-chamber support comprises a partition plate, the partition plate divides the opening into two sub-openings.

9. The spectrometer mirror adjustment mechanism of claim 1, wherein, The mirror adjusting mechanism of the spectrometer further comprises two spherical structures, the two opposite sides of the adjusting frame and the support have two arc-shaped grooves, respectively, and each spherical structure is located in the arc-shaped groove of the adjusting frame and the support, respectively.

10. The spectrometer mirror adjustment mechanism of claim 1, wherein, The adjusting frame further comprises four jackscrews, and the adjusting frame further has four jack screw holes, each jack screw hole is communicated with the outer peripheral surface of the adjusting frame and the first through hole, and the jack screw is in contact with the fixed nut through the jack screw hole.

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