Four-dimensional adjusting mechanism and optical device

Abstract

The utility model discloses a four-dimensional adjusting mechanism and an optical device, and belongs to the technical field of optical devices. The four-dimensional adjusting mechanism comprises a displacement adjusting assembly. The displacement adjusting assembly comprises a lens frame, a lens cone and a displacement adjusting piece. The lens cones are slidably connected into the lens frame along the X axis and the Y axis respectively and are used for mounting the lenses; displacement adjusting pieces are arranged on the two adjacent sides of the X axis and the Y axis of the lens frame respectively, each displacement adjusting piece comprises a first screw and an adjusting nut which are matched, the first screws are rotationally connected to the lens frame, one ends of the first screws are located outside the lens frame, the other ends of the first screws are sleeved with the adjusting nuts in a threaded mode, and the adjusting nuts are located in the lens frame and connected with the lens barrel. The adjusting nut and the lens cone can be driven to move along the X axis or the Y axis by rotating the first screw rod. According to the four-dimensional adjusting mechanism, the lens can be prevented from vibrating in the adjusting process, the position stability of the lens is guaranteed, light beams passing through the lens can be prevented from shaking, and the anti-interference performance and the stability of the four-dimensional adjusting mechanism are good.

Description

Technical Field

[0001] The utility model relates to the technical field of optical devices, in particular to a four-dimensional adjustment mechanism and an optical device. Background Art

[0002] When using an optical device for 3D printing, it is usually necessary to use a displacement adjustment component to adjust the position of the lens on the X-axis and Y-axis to ensure that the position of the lens on the X-axis and Y-axis meets the 3D printing requirements of the light beam; among them, the displacement adjustment component mainly includes a tension spring and a fine-tuning screw, that is, a "one-push and one-pull" structure is formed using the tension spring and the fine-tuning screw, through which the displacement of the lens on the X-axis and Y-axis is adjusted.

[0003] However, since a tension spring is used to provide tension in the above adjustment process, and based on the elastic characteristics of the tension spring, when the tension spring is subjected to external force, it is easy to cause the lens to vibrate, causing the light beam passing through the lens to shake, thereby affecting the printing quality of the light beam.

[0004] In view of the above problems, a four-dimensional adjustment mechanism and an optical device are urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to propose a four-dimensional adjustment mechanism and optical device, which can avoid vibration of the lens during the adjustment process, ensure the stability of the lens position, and avoid jitter of the light beam passing through the lens, so as to ensure the 3D printing quality of the light beam.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A four-dimensional adjustment mechanism includes a displacement adjustment component, wherein the displacement adjustment component includes:

[0008] Frames;

[0009] A lens barrel, which is slidably connected to the lens frame along the X-axis and the Y-axis, and is used to install the lens;

[0010] A displacement adjustment member is provided on both sides of the mirror frame adjacent to the X-axis and the Y-axis, respectively. The displacement adjustment member includes a matching first screw and an adjustment nut. The first screw is rotatably connected to the mirror frame. One end of the first screw is located outside the mirror frame, and the other end of the first screw is threadedly sleeved with the adjustment nut. The adjustment nut is located inside the mirror frame and connected to the lens barrel. Rotating the first screw can drive the adjustment nut and the lens barrel to move along the X-axis or the Y-axis.

[0011] As an optional solution, the adjusting nut is provided with a pin hole, and the lens barrel is provided with a pin groove; the displacement adjusting member further comprises:

[0012] A connecting pin is connected to the pin hole and the pin groove, the connecting pin can move in the pin groove, and the moving direction of the connecting pin in the pin groove is perpendicular to the moving direction of the adjusting nut.

[0013] As an optional solution, one of the adjusting nut and the lens barrel is provided with an avoidance groove, and the other is provided with a boss, the boss can move in the avoidance groove, and the moving direction of the boss in the avoidance groove is perpendicular to the moving direction of the adjusting nut.

[0014] As an optional solution, the displacement adjustment component further includes:

[0015] A pressure plate is provided with a protrusion on one side of the pressure plate close to the adjusting nut. When the pressure plate is pressed onto the lens frame, the protrusion abuts against the first screw rod to limit the first screw rod along the axial direction of the first screw rod.

[0016] As an optional solution, the displacement adjustment component further includes:

[0017] An elastic member is press-fitted into the lens barrel, and is used to provide elastic force to the lens barrel and the adjusting nut, so that the threads of the adjusting nut and the first screw are in contact with each other.

[0018] As an optional solution, the four-dimensional adjustment mechanism further includes an angle adjustment component, and the angle adjustment component includes:

[0019] a base plate, attached to a side of the mirror frame where the adjusting nut is not provided;

[0020] An angle adjustment part, the base plate is respectively provided with the angle adjustment parts at two diagonal positions in the XY plane, the angle adjustment parts include a second screw, a ball bearing and a sliding rod, the second screw is rotatably connected to the base plate, the length direction of the outer ring of the ball bearing is parallel to the Z axis, the outer ring of the ball bearing is threadedly connected to the second screw, one end of the sliding rod is threadedly connected to the mirror frame, and the other end of the sliding rod is slidably connected to the inner ring of the ball bearing along its length direction, and rotating the second screw can drive the ball bearing and the mirror frame to move along the Z axis.

[0021] As an optional solution, the angle adjustment assembly further includes a transfer adjustment member connected between the base plate and the frame; the transfer adjustment member includes:

[0022] A connecting rod extending along the Z axis, wherein the connecting rod is plugged into the base plate and the mirror frame;

[0023] A spherical plain bearing, wherein the outer ring of the spherical plain bearing is located in the mirror frame along the axial direction of the connecting rod, and the connecting rod is inserted into the inner ring of the spherical plain bearing;

[0024] A limiting nut, wherein one end of the connecting rod located inside the mirror frame is threadedly connected to the limiting nut, and the other end of the connecting rod located outside the base plate is threadedly connected to the limiting nut.

[0025] As an optional solution, the angle adjustment member further includes:

[0026] A pressing block is connected to the base plate, one end of the second screw is limited to pass through the pressing block and is threadedly connected to the outer ring of the ball bearing, and a first threaded hole is provided on one side of the pressing block;

[0027] A jackscrew is threadedly connected to the first threaded hole so that the jackscrew can tighten or loosen the second screw rod.

[0028] As an optional solution, the angle adjustment member further includes:

[0029] A cover plate is connected to the base plate and is located on one side of the pressing block. The cover plate is used to abut against the second screw rod to limit the second screw rod along the axial direction of the second screw rod.

[0030] An optical device comprises the above-mentioned four-dimensional adjustment mechanism and the lens, wherein the four-dimensional adjustment mechanism is used to adjust the position and angle of the lens on the X-axis and the position and angle on the Y-axis respectively.

[0031] The beneficial effects of the utility model are:

[0032] The four-dimensional adjustment mechanism of the present invention is characterized in that the lens barrel is connected to the lens frame by sliding along the X-axis and the Y-axis respectively, and displacement adjustment members are respectively provided on the two adjacent sides of the lens frame along the X-axis and the Y-axis. The displacement adjustment member comprises a matching first screw and an adjusting nut, so that the first screw is rotatably connected to the lens frame, and one end of the first screw is located outside the lens frame, and the other end of the first screw is threadedly sleeved with an adjusting nut, and the adjusting nut is located in the lens frame and connected to the lens barrel; when the first screw is rotated, the first screw can drive the adjusting nut to slide linearly on the first screw, so as to drive the lens barrel and the mounting bracket to move through the adjusting nut. The lens mounted on the lens barrel moves as a whole along the X-axis or Y-axis, thereby realizing displacement adjustment of the lens on the X-axis and Y-axis, ensuring that the position of the lens on the X-axis and Y-axis is more appropriate; the above-mentioned use of the first screw and the adjusting nut to cooperate with each other to achieve displacement adjustment of the lens barrel and the lens, compared with the use of a tension spring for displacement adjustment in the prior art, can avoid vibration of the lens during the adjustment process, ensure the stability of the position of the lens, thereby ensuring better accuracy of the lens position, avoiding jitter of the light beam passing through the lens, and thus ensuring better 3D printing quality of the light beam.

[0033] The four-dimensional adjustment mechanism of the present invention is characterized by threading the outer ring of the ball bearing onto the second screw, threading one end of the slide rod onto the frame, and sliding the other end of the slide rod into the inner ring of the ball bearing along its length. When the second screw rod located at the lower right corner of the base plate is rotated, the second screw rod drives the corresponding ball bearing to slide linearly on the second screw rod, thereby driving the frame and the lens mounted on the frame to move as a whole along the Z-axis via the ball bearing, so that the portion of the frame located at the lower right corner moves away from or closer to the base plate. At this time, since the second screw rod and the ball bearing at the upper left corner of the base plate do not move, the portion of the frame located at the upper left corner remains stationary, thereby adjusting the angle of the frame relative to the base plate. The above-mentioned coordinated movement of the second screw rod and the ball bearing to achieve angle adjustment of the frame and lens can avoid vibration of the lens during the adjustment process, better ensure the stability of the lens position, and thus ensure better accuracy of the lens position and avoid jitter of the light beam passing through the lens, thereby ensuring better 3D printing quality of the light beam, thereby ensuring better anti-interference and stability of the entire four-dimensional adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural diagram of the four-dimensional adjustment mechanism provided by the utility model;

[0035] Figure 2 This is a schematic structural diagram of the displacement adjustment assembly provided by the present utility model;

[0036] Figure 3 This is a structural diagram of the pressing plate provided by the utility model;

[0037] Figure 4 This is a schematic diagram of the assembly structure of the elastic member provided by the utility model in the lens barrel;

[0038] Figure 5 This is a front view of the four-dimensional adjustment mechanism provided by the utility model;

[0039] Figure 6 yes Figure 5 Schematic diagram of the structure of the AA surface;

[0040] Figure 7 This is a schematic diagram of the mirror frame provided by the present invention before the angle is adjusted relative to the base plate (the second screw at the upper left corner does not rotate, and the second screw at the lower right corner is rotated);

[0041] Figure 8 This is a schematic diagram of the mirror frame provided by the present invention after the angle is adjusted relative to the base plate (the second screw rod in the upper left corner does not rotate, and the second screw rod in the lower right corner is rotated).

[0042] Description of reference numerals:

[0043] 1-displacement adjustment assembly; 11-lens frame; 12-lens barrel; 13-adjusting nut; 14-first screw; 15-connecting pin; 16-elastic member; 17-pressing plate; 171-protrusion; 18-pin groove;

[0044] 2-angle adjustment assembly; 21-base plate; 22-second screw; 23-pressing block; 24-step hole; 25-spherical bearing; 26-ball bearing; 27-connecting rod; 28-sliding rod; 29-bearing plate; 210-limiting nut; 211-top screw; 212-cover plate. DETAILED DESCRIPTION

[0045] All features disclosed in this specification, or all steps in the disclosed methods or processes, except mutually exclusive features and / or steps, can be combined in any manner.

[0046] Any feature disclosed in this specification, unless otherwise stated, may be replaced by an equivalent or similar alternative feature. That is, unless otherwise stated, each feature is merely an example of a set of equivalent or similar features. Throughout this specification, like reference numerals refer to like elements.

[0047] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the present invention are further explained below with reference to the accompanying drawings and through specific implementation methods.

[0048] In this embodiment, a four-dimensional adjustment mechanism and an optical device including the four-dimensional adjustment mechanism are proposed. The optical device also includes a lens. The four-dimensional adjustment mechanism is used to adjust the position and angle of the lens on the X-axis and the position and angle on the Y-axis, that is, the lens can be adjusted in two dimensions on the X-axis and the Y-axis, and in two dimensions on the X-axis and the Y-axis, thereby achieving four-dimensional adjustment of the lens. The adjustment position and the adjustment angle have good stability, which can avoid vibration of the lens during the adjustment process, ensure the stability of the position and angle of the lens, avoid jitter of the light beam passing through the lens, and ensure the 3D printing quality of the light beam, so that the entire four-dimensional adjustment mechanism has good anti-interference and stability.

[0049] Specifically, if Figure 1 and Figure 2 As shown, the four-dimensional adjustment mechanism includes a displacement adjustment component 1, which can adjust the position of the lens on the X axis and the Y axis respectively to ensure that the position of the lens on the X axis and the Y axis meets the 3D printing requirements of the light beam.

[0050] The structure of the displacement adjustment component 1 is described in detail below:

[0051] Further, if Figure 1 and Figure 2 As shown, the displacement adjustment assembly 1 includes a lens frame 11, a lens barrel 12, and a displacement adjustment member. The lens barrel 12 is slidably connected to the frame 11 along the X-axis and the Y-axis, respectively. That is, a corresponding space is machined in the frame 11 to allow the lens barrel 12 to move a certain distance along the X-axis and the Y-axis within the space. A mounting hole is provided at the center of the lens barrel 12, and the lens is threadedly installed into the mounting hole. The frame 11 is provided with a displacement adjustment member on both sides adjacent to the X-axis and the Y-axis, respectively, so that the displacement of the lens on the X-axis and the Y-axis can be adjusted by the two displacement adjustment members. The structure and working principle of the two displacement adjustment members are the same, and the following is a detailed description of one displacement adjustment member.

[0052] Specifically, if Figure 2 As shown, the displacement adjustment member includes a matching first screw 14 and an adjusting nut 13. The first screw 14 is rotatably connected to the frame 11. One end of the first screw 14 is located outside the frame 11, and the other end of the first screw 14 is located inside the frame 11. The adjusting nut 13 is threadedly sleeved on the other end of the first screw 14. The adjusting nut 13 is located inside the frame 11 and connected to the lens barrel 12. Rotating the first screw 14 can drive the adjusting nut 13 to move along the X-axis or Y-axis on the first screw 14, thereby driving the lens barrel 12 to move along the X-axis or Y-axis in the frame 11.

[0053] Compared with the prior art, the four-dimensional adjustment mechanism in this embodiment changes the structural setting of the displacement adjustment member and the displacement adjustment method of the lens; by sliding the lens barrel 12 along the X-axis and the Y-axis in the lens frame 11, the displacement adjustment member is respectively provided on the two adjacent sides of the lens frame 11 along the X-axis and the Y-axis, and the displacement adjustment member includes a matching first screw rod 14 and an adjusting nut 13, so that the first screw rod 14 is rotatably connected to the lens frame 11, and one end of the first screw rod 14 is located outside the lens frame 11, and the other end of the first screw rod 14 is threadedly sleeved with the adjusting nut 13, and the adjusting nut 13 is located in the lens frame 11 and connected to the lens barrel 12; when the first screw rod 14 is rotated, the first screw rod 14 can drive the adjusting nut 13 to rotate. The nut 13 slides linearly on the first screw 14 to drive the lens barrel 12 and the lens mounted on the lens barrel 12 to move as a whole along the X-axis or Y-axis through the adjusting nut 13, thereby realizing displacement adjustment of the lens on the X-axis and Y-axis, and ensuring that the position of the lens on the X-axis and Y-axis is more appropriate; the above-mentioned use of the first screw 14 and the adjusting nut 13 to achieve displacement adjustment of the lens barrel 12 and the lens, compared with the use of a tension spring for displacement adjustment in the prior art, can avoid vibration of the lens during the adjustment process, ensure the stability of the lens position, thereby ensuring better accuracy of the lens position, avoiding jitter of the light beam passing through the lens, and thus ensuring better 3D printing quality of the light beam.

[0054] Further, if Figure 2 As shown, a pin hole is provided on the adjusting nut 13, and a pin groove 18 is provided on the lens barrel 12; the displacement adjusting member also includes a connecting pin 15, which is connected to the pin hole and the pin groove 18, so that the connection between the adjusting nut 13 and the lens barrel 12 can be achieved through the connecting action of the connecting pin 15, so that when the adjusting nut 13 moves linearly along the X-axis or Y-axis, it can synchronously drive the lens barrel 12 and the lens thereon to move as a whole along the X-axis or Y-axis.

[0055] Specifically, if Figure 2 As shown, the connecting pin 15 can move in the pin groove 18, and the moving direction of the connecting pin 15 in the pin groove 18 is perpendicular to the moving direction of the adjusting nut 13, so that when one of the first screws 14 is rotated, interference between the lens barrel 12 and the other adjusting nut 13 can be avoided, ensuring that the other adjusting nut 13 does not affect the movement of the lens barrel 12.

[0056] Specifically, take the displacement adjustment of the lens barrel 12 on the X-axis as an example; first, rotate the first screw 14 on the X-axis to drive the corresponding adjustment nut 13 to move along the X-axis on the first screw 14, so that the adjustment nut 13 drives the lens barrel 12 to move linearly along the X-axis through the connecting pin 15; at this time, since the first screw 14 and the adjustment nut 13 on the Y-axis do not move, and the adjusting nut 13 on the Y-axis is also connected to the lens barrel 12 by the connecting pin 15, the connecting pin 15 on the Y-axis moves linearly along the X-axis within the pin slot 18 to prevent the adjusting nut 13 on the Y-axis from interfering with the movement of the lens barrel 12 on the X-axis. The displacement adjustment of the lens barrel 12 on the Y-axis is similar to the above-mentioned adjustment process and will not be described in detail here.

[0057] Furthermore, an escape groove is provided on one of the adjusting nut 13 and the lens barrel 12, and a boss is provided on the other. The boss is movable within the escape groove, and the direction of movement of the boss within the escape groove is perpendicular to the direction of movement of the adjusting nut 13. In this embodiment, the boss is provided on the adjusting nut 13, and the escape groove is provided on the lens barrel 12.

[0058] Specifically, taking the displacement adjustment of the lens barrel 12 on the X-axis as an example, the first screw 14 on the X-axis drives the corresponding adjustment nut 13 to move along the X-axis on the first screw 14, so that when the adjustment nut 13 drives the lens barrel 12 to move linearly along the X-axis via the connecting pin 15, since the first screw 14 and the adjustment nut 13 on the Y-axis do not move, the boss on the Y-axis can move linearly along the X-axis within the avoidance groove, thereby better preventing the adjustment nut 13 on the Y-axis from interfering with the movement of the lens barrel 12 on the X-axis. The displacement adjustment of the lens barrel 12 on the Y-axis is similar to the above-mentioned adjustment process and will not be described in detail here.

[0059] Furthermore, if Figure 3 As shown, the displacement adjustment assembly 1 also includes a pressure plate 17, and a protrusion 171 is provided on one side of the pressure plate 17 close to the adjusting nut 13. When the pressure plate 17 is pressed onto the frame 11, the protrusion 171 abuts against the first screw rod 14 to limit the first screw rod 14 axially along the first screw rod 14. That is, the abutment action of the protrusion 171 can provide an axial limiting effect on the first screw rod 14, ensuring that the first screw rod 14 will not move in a straight line and can only rotate in place.

[0060] Specifically, if Figure 4As shown, the displacement adjustment assembly 1 also includes an elastic member 16, which is crimped into the lens barrel 12. The elastic member 16 is used to provide an elastic force to the lens barrel 12, so that it can act on the adjustment nut 13 through the lens barrel 12, so that the adjustment nut 13 can move radially along the first screw 14, thereby making the threads between the adjustment nut 13 and the first screw 14 fit more tightly, ensuring that there is no gap between the threads of the adjustment nut 13 and the first screw 14, thereby ensuring the accuracy of the movement of the adjustment nut 13 on the first screw 14, and better improving the displacement adjustment accuracy of the lens. In this embodiment, an elastic member 16 is provided along the X-axis and the Y-axis in the lens barrel 12, and the elastic member 16 can specifically be a backlash-eliminating bidirectional spring column.

[0061] The specific adjustment process of the displacement adjustment component 1 in this embodiment is as follows, taking the displacement adjustment of the lens barrel 12 on the X-axis as an example:

[0062] First, the first screw 14 on the X-axis is rotated. Due to the abutment restriction of the protrusion 171 on the pressure plate 17 on the first screw 14, the first screw 14 cannot move axially and can only rotate in place, thereby driving the corresponding adjustment nut 13 to translate along the X-axis on the first screw 14, so that the adjustment nut 13 drives the lens barrel 12 to move linearly along the X-axis through the connecting pin 15. At the same time, the connecting pin 15 on the Y-axis slides linearly along the X-axis in the pin groove 18, and the boss on the adjustment nut 13 on the Y-axis moves along the X-axis in the avoidance groove of the lens barrel 12. The displacement adjustment of the lens barrel 12 on the Y-axis is similar to the above adjustment process.

[0063] The structure of the angle adjustment component 2 is described in detail below:

[0064] Further, if Figure 1 As shown, the four-dimensional adjustment mechanism also includes an angle adjustment component 2, which is arranged on one side of the frame 11 so that the angles of the frame 11 and the lenses in the frame 11 on the X-axis and Y-axis can be adjusted by the angle adjustment component 2.

[0065] Currently, a "one-push-one-pull" structure is formed using a tension spring and a fine-tuning screw, through which the angle of the lens on the X-axis and Y-axis is adjusted. However, since the tension spring is used to provide tension in the above adjustment process, and based on the elastic characteristics of the tension spring, when the tension spring is subjected to external force, it is easy to cause the lens to vibrate, thereby causing the light beam passing through the lens to jitter, thereby affecting the printing quality of the light beam.

[0066] For this reason, Figure 1As shown, the angle adjustment assembly 2 in this embodiment includes a base plate 21 and an angle adjustment member; wherein, the base plate 21 is attached to a side of the frame 11 where the adjustment nut 13 is not provided; the base plate 21 is provided with angle adjustment members at two diagonal positions in the XY plane, that is, an angle adjustment member is provided at the upper left corner and the lower right corner of the base plate 21; the angle adjustment member includes a second screw 22, a ball bearing 26 and a slide rod 28, the second screw 22 is rotatably connected to one side of the base plate 21, the length direction of the outer ring of the ball bearing 26 is parallel to the Z axis, the outer ring of the ball bearing 26 is threadedly connected to the second screw 22, one end of the slide rod 28 is threadedly connected to the second threaded hole of the frame 11, and the other end of the slide rod 28 is slidably connected to the inner ring of the ball bearing 26 along its length direction. Rotating the second screw 22 can drive the ball bearing 26 and the frame 11 to move along the Z axis.

[0067] Compared with the prior art, the four-dimensional adjustment mechanism in this embodiment changes the structural setting of the angle adjustment member and the angle adjustment method of the lens; the outer ring of the ball bearing 26 is threadedly connected to the second screw 22, one end of the slide rod 28 is threadedly connected to the frame 11, and the other end of the slide rod 28 is slidably connected to the inner ring of the ball bearing 26 along its length direction; when the second screw 22 located at the lower right corner of the base plate 21 is rotated, the second screw 22 can drive the corresponding ball bearing 26 to slide linearly on the second screw 22, so as to drive the frame 11 and the lens mounted on the frame 11 to move along the Z axis as a whole through the ball bearing 26, so that the part located at the lower right corner of the frame 11 Move away from or approach the substrate 21. At this time, since the second screw 22 and the ball bearing 26 at the upper left corner of the substrate 21 do not move, the part of the frame 11 located at the upper left corner remains stationary, thereby adjusting the angle of the frame 11 relative to the substrate 21. The above-mentioned coordinated movement between the second screw 22 and the ball bearing 26 to achieve the angle adjustment of the frame 11 and the lens can avoid vibration of the lens during the adjustment process compared to the prior art that uses a tension spring for angle adjustment, better ensures the position stability of the lens, thereby ensuring better accuracy of the lens position, avoiding jitter of the light beam passing through the lens, and thus ensuring better 3D printing quality of the light beam.

[0068] It is worth noting that, during the aforementioned angle adjustment process, the portion of the frame 11 located at the upper left corner does not move linearly, while the portion of the frame 11 located at the lower right corner moves away from or closer to the base plate 21. Therefore, the slide bar 28 at the upper left corner and the inner ring of the ball bearing 26 can rotate relative to the outer ring of the ball bearing 26, thereby preventing the ball bearing 26 at the upper left corner from interfering with the movement of the frame 11. Furthermore, since the portion of the frame 11 located at the upper left corner does not move linearly, during the movement of the ball bearing 26 and the slide bar 28 at the lower right corner, to prevent interference and damage between the inner ring of the ball bearing 26 at the lower right corner and the slide bar 28, the slide bar 28 is slidably connected along its length within the inner ring of the ball bearing 26, thereby enabling relative sliding between the slide bar 28 and the inner ring of the ball bearing 26. The outer ring of the ball bearing 26 is a cylindrical structure.

[0069] That is, during the entire process, the base plate 21 remains stationary, and the portion of the lens frame 11 where the second screw 22 is not rotating also remains stationary. The movement of the second screw 22 and the ball bearing 26 in the upper left corner is similar to the above process and will not be described in detail here.

[0070] Further, if Figure 1 As shown, the angle adjustment member also includes a pressing block 23 and a top screw 211; wherein the pressing block 23 is connected to one side of the base plate 21, and one end of the second screw rod 22 is limited to pass through the pressing block 23 and is threadedly connected to the outer ring of the ball head bearing 26, so that the pressing block 23 can provide a limiting effect on the second screw rod 22; and a first threaded hole is provided on one side of the pressing block 23; the top screw 211 is threadedly connected to the first threaded hole, so that the top screw 211 and the second screw rod 22 can be tightened or loosened through the threaded movement of the top screw 211 in the first threaded hole, so that the top screw 211 can lock or unlock the second screw rod 22, ensuring that the reliability and stability of the movement of the second screw rod 22 are high.

[0071] Specifically, if Figure 1 As shown, the angle adjustment member also includes a cover plate 212, which is connected to the base plate 21 and is located on one side of the pressure block 23. The cover plate 212 is used to abut against the second screw rod 22 to limit the second screw rod 22 along the axial direction of the second screw rod 22. That is, the abutting action of the cover plate 212 can provide an axial limiting effect on the second screw rod 22, ensuring that the second screw rod 22 will not move in a straight line and can only rotate in place.

[0072] Further, if Figure 1 、 Figure 5 and Figure 6As shown, in order to ensure the stability and reliability of the rotation of the frame 11 relative to the base plate 21, the angle adjustment assembly 2 in this embodiment also includes a transfer adjustment member, which is connected between the base plate 21 and the frame 11, so that the frame 11 can be driven by the second screw 22 and simultaneously through the transfer adjustment member to ensure the rotation of the frame 11 relative to the base plate 21, that is, the second screw 22 and the transfer adjustment member move synchronously, thereby ensuring the stability and reliability of the angle adjustment of the frame 11 relative to the base plate 21; and the spacing between the base plate 21 and the portion of the frame 11 where the transfer adjustment member is located is a fixed spacing.

[0073] Specifically, if Figure 5 and Figure 6 As shown, the transfer adjustment member includes a connecting rod 27, a joint bearing 25 and a limit nut 210; wherein the connecting rod 27 extends along the Z axis and is inserted into the base plate 21 and the frame 11; the frame 11 is rectangular, and a stepped hole 24 is provided in one corner of the frame 11. The outer ring of the joint bearing 25 is limited in the axial direction of the connecting rod 27 by a screw in the stepped hole 24 of the frame 11, and a bearing plate 29 is further provided in the stepped hole 24 and is pressed against one side of the joint bearing 25; the connecting rod 27 is inserted into the bearing plate 29 and the inner ring of the joint bearing 25, so that the base plate 21, the frame 11, the joint bearing 25 and the bearing plate 29 are connected through the connecting rod 27; One end of the connecting rod 27 located in the stepped hole 24 is threadedly connected to a limiting nut 210, and the other end of the connecting rod 27 located outside the base plate 21 is threadedly connected to a limiting nut 210, so that the base plate 21, the frame 11, the joint bearing 25 and the bearing plate 29 can be limited to the preset installation positions on the connecting rod 27 by the limiting nuts 210 at both ends of the connecting rod 27, so that the spacing between the base plate 21 and the part of the frame 11 that passes through the connecting rod 27 is a fixed spacing, and the fixed spacing remains unchanged during the entire adjustment process; and the universal rotation ability of the joint bearing 25 can be used under the drive of the second screw 22 to make the frame 11 universally rotate relative to the base plate 21.

[0074] It is worth noting that the displacement adjustment and angle adjustment mentioned above are all micro-adjustments, that is, the adjustment amplitude and range are small.

[0075] The specific adjustment principle of the angle adjustment assembly 2 in this embodiment is as follows: the second screw 22 in the lower right corner rotates, and the second screw 22 in the upper left corner remains stationary:

[0076] like Figure 7 and Figure 8 As shown, the base plate 21 is fixed and the mirror frame 11 moves relative to the base plate 21. Figure 7 and Figure 8Here, M1 and M2 are the side lengths of the substrate 21, N1 and N2 are the side lengths of the frame 11, L is the fixed distance between the substrate 21 and the frame 11, K1 is the distance between the central axis of the second screw 22 in the upper left corner and the upper surface of the substrate 21, and K2 is the distance between the central axis of the second screw 22 in the lower right corner and the outer side surface of the substrate 21. The above-mentioned M1, M2, N1, N2, L, K1, and K2 are all constants. △A1 and △A2 are the linear fine-tuning distance variables of the X-axis and Y-axis fine-tuning thread pairs, respectively. Due to the changes in △A1 and △A2, according to the graphical method, the values ​​of X1, X2, and X3 change accordingly, thereby achieving the purpose of adjusting the angle of the frame 11 and the lens relative to the substrate 21.

[0077] The specific adjustment process of the angle adjustment assembly 2 in this embodiment is as follows, taking the second screw 22 at the upper left corner as an example, while the second screw 22 at the lower right corner is rotated while the second screw 22 at the upper left corner is fixed:

[0078] First, the second screw 22 located at the lower right corner of the base plate 21 is rotated. Due to the abutment restriction of the cover plate 212 on the second screw 22, the second screw 22 cannot move axially and can only rotate in place. This allows the second screw 22 to drive the corresponding ball bearing 26 to slide linearly along the Z-axis on the second screw 22. The ball bearing 26 then drives the slide bar 28 and the entire frame 11 to move along the Z-axis, so that the portion of the frame 11 located at the lower right corner linearly moves away from or closer to the base plate 21. Simultaneously, the slide bar 28 and the inner ring of the ball bearing 26 at the upper left corner of the base plate 21 rotate about the Y-axis relative to the outer ring of the ball bearing 26. Furthermore, the movement of the frame 11 drives the outer ring of the spherical bearing 25 to rotate universally relative to the inner ring of the spherical bearing 25, thereby adjusting the angle of the frame 11 relative to the base plate 21. The adjustment process in which the second screw 22 at the upper left corner rotates while the second screw 22 at the lower right corner remains stationary is similar to the above adjustment process.

[0079] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A four-dimensional adjustment mechanism, characterized in that: The invention comprises a displacement adjustment component (1), wherein the displacement adjustment component (1) comprises: Frame (11); A lens barrel (12), wherein the lens barrel (12) is slidably connected to the lens frame (11) along the X axis and the Y axis respectively, and the lens barrel (12) is used to install the lens; A displacement adjustment member is provided on two sides of the mirror frame (11) adjacent to the X-axis and the Y-axis, respectively. The displacement adjustment member comprises a matching first screw rod (14) and an adjustment nut (13). The first screw rod (14) is rotatably connected to the mirror frame (11). One end of the first screw rod (14) is located outside the mirror frame (11). The other end of the first screw rod (14) is threadedly sleeved with the adjustment nut (13). The adjustment nut (13) is located inside the mirror frame (11) and connected to the lens barrel (12). Rotating the first screw rod (14) can drive the adjustment nut (13) and the lens barrel (12) to move along the X-axis or the Y-axis.

2. The four-dimensional adjustment mechanism according to claim 1, characterized in that: The adjusting nut (13) is provided with a pin hole, and the lens barrel (12) is provided with a pin groove (18); the displacement adjusting member further comprises: A connecting pin (15) is connected to the pin hole and the pin slot (18), the connecting pin (15) can move in the pin slot (18), and the moving direction of the connecting pin (15) in the pin slot (18) is perpendicular to the moving direction of the adjusting nut (13).

3. The four-dimensional adjustment mechanism according to claim 1, characterized in that: One of the adjusting nut (13) and the lens barrel (12) is provided with an escape groove, and the other is provided with a boss. The boss is movable in the escape groove, and the moving direction of the boss in the escape groove is perpendicular to the moving direction of the adjusting nut (13).

4. The four-dimensional adjustment mechanism according to claim 1, wherein: The displacement adjustment component (1) further comprises: A pressure plate (17) is provided with a protrusion (171) on one side of the pressure plate (17) close to the adjusting nut (13); when the pressure plate (17) is pressed onto the mirror frame (11), the protrusion (171) abuts against the first screw rod (14) to limit the first screw rod (14) along the axial direction of the first screw rod (14).

5. The four-dimensional adjustment mechanism according to claim 1, characterized in that: The displacement adjustment component (1) further comprises: An elastic member (16) is press-fitted into the lens barrel (12), and the elastic member (16) is used to provide elastic force to the lens barrel (12) and the adjusting nut (13), so that the threads of the adjusting nut (13) and the first screw (14) are in contact with each other.

6. The four-dimensional adjustment mechanism according to any one of claims 1 to 5, characterized in that: The four-dimensional adjustment mechanism further comprises an angle adjustment component (2), wherein the angle adjustment component (2) comprises: A base plate (21) is attached to a side of the mirror frame (11) where the adjusting nut (13) is not provided; An angle adjustment member is provided at two diagonal positions of the base plate (21) in the XY plane, and the angle adjustment member comprises a second screw rod (22), a ball bearing (26) and a slide rod (28). The second screw rod (22) is rotatably connected to the base plate (21). The length direction of the outer ring of the ball bearing (26) is parallel to the Z axis. The outer ring of the ball bearing (26) is threadedly connected to the second screw rod (22). One end of the slide rod (28) is threadedly connected to the mirror frame (11). The other end of the slide rod (28) is slidably connected to the inner ring of the ball bearing (26) along its length direction. Rotating the second screw rod (22) can drive the ball bearing (26) and the mirror frame (11) to move along the Z axis.

7. The four-dimensional adjustment mechanism according to claim 6, characterized in that: The angle adjustment assembly (2) further comprises a transfer adjustment member connected between the base plate (21) and the mirror frame (11); the transfer adjustment member comprises: A connecting rod (27) extends along the Z axis, and the connecting rod (27) is plugged into the base plate (21) and the mirror frame (11); A joint bearing (25), the outer ring of the joint bearing (25) is located in the mirror frame (11) along the axial direction of the connecting rod (27), and the connecting rod (27) is inserted into the inner ring of the joint bearing (25); A limiting nut (210), wherein one end of the connecting rod (27) located inside the mirror frame (11) is threadedly connected to the limiting nut (210), and the other end of the connecting rod (27) located outside the base plate (21) is threadedly connected to the limiting nut (210).

8. The four-dimensional adjustment mechanism according to claim 6, wherein: The angle adjustment member further comprises: A pressing block (23) is connected to the base plate (21), one end of the second screw (22) is limited to pass through the pressing block (23) and is threadedly connected to the outer ring of the ball bearing (26), and a first threaded hole is provided on one side of the pressing block (23); A top screw (211) is threadedly connected to the first threaded hole, so that the top screw (211) can tighten or loosen the second screw rod (22).

9. The four-dimensional adjustment mechanism according to claim 8, characterized in that: The angle adjustment member further comprises: A cover plate (212) is connected to the base plate (21) and is located on one side of the pressing block (23). The cover plate (212) is used to abut against the second screw rod (22) to limit the second screw rod (22) along the axial direction of the second screw rod (22).

10. An optical device, characterized in that: It comprises the four-dimensional adjustment mechanism and the lens as described in any one of claims 1 to 9, wherein the four-dimensional adjustment mechanism is used to adjust the position and angle of the lens on the X axis and the position and angle on the Y axis respectively.

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