Two-dimensional adjustment device and optical system

Abstract

The application discloses a two-dimensional adjusting device and an optical system, and relates to the technical field of optical element adjusting. The two-dimensional adjusting device comprises a fixed base, an elastic isolation layer and a movable base which are sequentially arranged, and three connecting members which are sequentially connected with the fixed base after penetrating through the movable base and the elastic isolation layer. The three connecting members are distributed in a triangular shape, and the connecting members can be adjusted in position relative to the fixed base so as to adjust the position of the movable base relative to the fixed base. The two-dimensional adjusting device is simple and convenient to operate, has high adjusting efficiency and high pointing precision, and has good long-term reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical element adjustment, in particular to a two-dimensional adjustment device and an optical system. BACKGROUND

[0002] In optical systems and related instruments, some optical components such as lenses, filters and the like need to be adjusted in two dimensions to meet the requirements of the optical path. There are currently three main two-dimensional adjustment schemes: Scheme one is to fix a point, and arrange a top wire and a tension spring in the vertical direction respectively, and adjust the rotation angle of the optical component in two directions by pushing the top wire and pulling the tension spring. The second scheme is to arrange several groups of adjustment pairs in the circumferential direction, each adjustment pair is adjusted in the advancing and retreating directions by a screw for pushing and a screw for locking, and then the rotation angle of the optical component in two directions is adjusted. The third scheme is to process a concave spherical surface on one base and a convex spherical surface on another base, then arrange screws on the edge circumference to lock the two bases, and adjust the rotation angle of the optical component in two directions by adjusting the screws to make the two bases slide along the spherical surface.

[0003] The structure of scheme one cannot guarantee the stability and reliability of long-term use in a strong and variable vibration environment, and cannot be applied to airborne or vehicle-mounted. The structure of scheme two is not intuitive enough in adjustment, and it is easy to not adjust to the right position or to adjust too much, and it will also cause local deformation of the material, and the pointing performance is not good when making angle-second level angle fine adjustment. The structure of scheme three needs to process two spherical surfaces with high matching degree, which has high processing cost; and due to the inevitable processing error, only a few points are in contact between the two spherical surfaces, and the locking torque of the screw will cause fatigue of the material at the contact point, which has the risk of loosening; and the adjustment is not convenient and intuitive, and the pointing performance is not good when making angle-second level angle fine adjustment. SUMMARY

[0004] The purpose of the present application is to provide a two-dimensional adjustment device and an optical system, which is simple and convenient to operate, has high adjustment efficiency and pointing accuracy, and has good long-term reliability.

[0005] The embodiments of the present application are implemented as follows:

[0006] The two-dimensional adjustment device provided by the embodiments of the present application comprises a fixed base, an elastic isolation layer and a movable base arranged in sequence, and three connecting members, the connecting members are connected with the fixed base after passing through the movable base and the elastic isolation layer in sequence, the three connecting members are distributed in a triangular shape, and the connecting members can adjust the position relative to the fixed base to adjust the position of the movable base relative to the fixed base.

[0007] Optionally, the connecting pieces are screws, the movable base, the elastic isolation layer and the fixed base are sequentially provided with first through holes, second through holes and threaded holes, and the screws are sequentially passed through the first through holes and the second through holes and then fixed in the threaded holes.

[0008] Optionally, the three connecting pieces are distributed in an equilateral triangle.

[0009] Optionally, the elastic isolation layer comprises a plurality of elastic isolation parts separated from each other, and the three elastic isolation parts are arranged one by one in correspondence with the connecting pieces.

[0010] Optionally, the elastic isolation part comprises a plurality of butterfly springs arranged in sequence.

[0011] Optionally, the elastic isolation part further comprises an encapsulating cover and an encapsulating block, the butterfly spring is arranged on the encapsulating block, the encapsulating cover is sleeved on the butterfly spring and movably connected with the encapsulating block, and the encapsulating cover and the encapsulating block are respectively provided with third through holes and fourth through holes for the connecting pieces to pass through.

[0012] Optionally, the side of the encapsulating block away from the butterfly spring is provided with a tapered surface, and the bottom of the encapsulating cover is provided with a plurality of pressing pieces which are bent towards the encapsulating block and are attached to the tapered surface.

[0013] Optionally, the elastic isolation part comprises an elastic gasket.

[0014] The embodiment of the present application also provides an optical system comprising an optical element and the two-dimensional adjusting device according to any one of the above, and the optical element is arranged on the movable base of the two-dimensional adjusting device.

[0015] Optionally, the fixed base and the movable base of the two-dimensional adjusting device are both provided with light through holes, and the light through holes are used for making the light beam pass through and irradiate on the optical element.

[0016] The beneficial effects of the embodiment of the present application include:

[0017] The two-dimensional adjusting device provided by the embodiment of the present application comprises a fixed base, an elastic isolation layer and a movable base arranged in sequence, and three connecting members, the connecting members are connected with the fixed base after penetrating through the movable base and the elastic isolation layer in sequence, the three connecting members are distributed in a triangular shape, the connecting members can be adjusted relative to the fixed base to adjust the position of the movable base relative to the fixed base. The two-dimensional adjusting device increases an elastic isolation layer between the fixed base and the movable base, and there is no other contact between the fixed base and the movable base except the elastic isolation layer, when adjusting the directivity, only one connecting member needs to be operated at a time, the operation is simple and convenient, and the efficiency is high; the acting force and the reaction force of the connecting member are applied to the same area, the fixed base and the movable base are not subjected to shearing force, and the directivity during fine adjustment is not affected due to local deformation caused by great shearing force, the adjustment directivity precision is high; the elastic deformation during adjustment occurs on the elastic isolation layer which has strong elasticity, the fixed base and the movable base are not subjected to great stress, the directivity is not changed due to plastic deformation during long-term use, and the reliability is good. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 One of the structural schematic diagrams of the two-dimensional adjusting device provided by the embodiment of the present application;

[0020] Figure 2 The sectional view of the two-dimensional adjusting device provided by the embodiment of the present application;

[0021] Figure 3 The local enlarged schematic diagram of the middle C; Figure 2

[0022] Figure 4 The second structural schematic diagram of the two-dimensional adjusting device provided by the embodiment of the present application;

[0023] Figure 5 The stacking schematic diagram of the butterfly-shaped spring in the two-dimensional adjusting device provided by the embodiment of the present application;

[0024] Figure 6 One of the structural schematic diagrams of the elastic isolation part in the two-dimensional adjusting device provided by the embodiment of the present application;

[0025] Figure 7 The second structural schematic diagram of the elastic isolation part in the two-dimensional adjusting device provided by the embodiment of the present application; Figure 6 ​A sectional view of the elastic isolation part;

[0026] Figure 8 A structure schematic view of the elastic isolation part in the two-dimensional adjusting device provided by the embodiment of the present application;

[0027] Figure 9 For Figure 8 A sectional view of the elastic isolation part;

[0028] Figure 10 A structure schematic view of the elastic isolation part in the two-dimensional adjusting device provided by the embodiment of the present application;

[0029] Figure: 100-two-dimensional adjusting device; 110-fixed base; 111-threaded hole; 120-elastic isolation layer; 121-elastic isolation part; 1211-second through hole; 1212-butterfly spring; 1213-encapsulation cover; 1213a-pressing piece; 1213b-third through hole; 1213c-score; 1214-encapsulation block; 1214a-fourth through hole; 1214b-tapered surface; 1215-elastic washer; 1216-annular groove; 130-movable base; 140-screw; 150-rotating shaft; 160-light transmission hole; 200-piece to be adjusted. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0032] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Please refer to Figures 1 to 3 The embodiment of the present application provides a two-dimensional adjusting device 100, which comprises a fixed base 110, an elastic isolation layer 120 and a movable base 130 arranged in sequence, and three connecting pieces, the connecting pieces are connected with the fixed base 110 after passing through the movable base 130 and the elastic isolation layer 120 in sequence, the three connecting pieces are distributed in a triangular shape, the connecting pieces can adjust the position relative to the fixed base 110 to adjust the position of the movable base 130 relative to the fixed base 110.

[0036] The two-dimensional adjusting device 100 comprises a fixed base 110, an elastic isolation layer 120, a movable base 130 and three connecting members, and is used for adjusting a to-be-adjusted member 200. The to-be-adjusted member 200 is fixed on the movable base 130 and can be an optical element such as a mirror, a lens or the like. Specifically, the fixed base 110 and the movable base 130 are oppositely arranged, and the elastic isolation layer 120 is arranged between the fixed base 110 and the movable base 130. One side of the elastic isolation layer 120 is in contact with the fixed base 110, and the other side is in contact with the movable base 130. The fixed base 110, the elastic isolation layer 120 and the movable base 130 are connected through the connecting members. The axial direction of the connecting members is parallel to the arrangement direction of the fixed base 110, the elastic isolation layer 120 and the movable base 130. The connecting members pass through the movable base 130, the elastic isolation layer 120 in sequence from the side of the movable base 130 away from the elastic isolation layer 120, and are connected with the fixed base 110. The relative position between the connecting members and the fixed base 110 can be adjusted along the axial direction of the connecting members. The connecting members are distributed in a triangular shape. The axes of the three connecting members pass through the three vertices of the triangle respectively and are arranged perpendicularly to the surface of the triangle. One connecting member corresponds to one adjusting point. By adjusting the relative position between the connecting member and the fixed base 110, the relative distance between the movable base 130 and the fixed base 110 at the adjusting point can be adjusted. In this way, the whole formed by the to-be-adjusted member 200 and the movable base 130 can be adjusted in two dimensions relative to the fixed base 110.

[0037] It can be understood that the movable base 130 and the elastic isolation layer 120 are respectively provided with through holes for the connecting members to pass through, and the fixed base 110 is also provided with holes for fixing the connecting members. The movable base 130 and the fixed base 110 are integral parts, and the elastic isolation layer 120 can be an integral part or can comprise several separate parts.

[0038] The assembly sequence of the two-dimensional adjusting device 100 is as follows: first, the to-be-adjusted member 200 and the movable base 130 are assembled together; then, the connecting members pass through the movable base 130 and the elastic isolation layer 120 and are locked on the fixed base 110; finally, the relative positions between the connecting members and the fixed base 110 are adjusted according to the required pointing direction. Figure 1 As shown in FIG. 6, when the to-be-adjusted member 200 needs to be finely adjusted downward, the upper connecting member is driven to move in the B1 direction. Since the elastic isolation layer 120 between the fixed base 110 and the movable base 130 has a certain elasticity, it will be compressed and shortened by the connecting member. At this time, the lower two connecting members do not move and remain in the original position. The movable base 130 is driven by the upper connecting member and rotates in the A direction around the rotation shaft 150 formed by the lower two connecting members. The to-be-adjusted member 200 on the movable base 130 also rotates downward by a certain angle. If the to-be-adjusted member 200 needs to be adjusted leftward or rightward, the lower two connecting members are adjusted according to the requirement. At this time, the to-be-adjusted member 200 will rotate in the B2 direction or the B3 direction. Figure 1The B1 and B2 directions in the B1 and B2 directions cause a slight change in the up-down angle, and thus the upper connecting piece can be adjusted to be correct after the left-right angle adjustment is completed.

[0039] The two-dimensional adjusting device 100 has the elastic isolation layer 120 between the fixed base 110 and the movable base 130, and there is no other contact between the fixed base 110 and the movable base 130 except the elastic isolation layer 120. When adjusting the directivity, only one connecting piece needs to be operated, and the opposite connecting piece does not need to be adjusted. The operation is simple and convenient, and the efficiency is high. Moreover, only one operation is needed for one connecting piece, the directivity and the torque can be changed at the same time during adjustment, and the torque does not need to be rechecked after the directivity is adjusted, so that the back-and-forth adjustment is not needed, the adjustment process is fast and simple, the force and the reaction force of the connecting piece are applied to the same area, the fixed base 110 and the movable base 130 are not subjected to shear force, and the local deformation due to the great shear force does not affect the directivity during fine adjustment, the directivity precision is high, the elastic deformation during adjustment occurs on the elastic isolation layer 120 which has strong elasticity, the fixed base 110 and the movable base 130 are not subjected to great stress, and the directivity does not change due to the plastic deformation during long-term use, and the reliability is good.

[0040] Optionally, in an implementable manner of the embodiment of the present application, the connecting piece is a screw 140, the movable base 130, the elastic isolation layer 120 and the fixed base 110 are sequentially provided with a first through hole, a second through hole 1211 and a threaded hole 111, and the screw 140 is sequentially fixed in the threaded hole 111 after passing through the first through hole and the second through hole 1211.

[0041] The movable base 130 is provided with a first through hole, the elastic isolation layer 120 is provided with a second through hole 1211, and the fixed base 110 is provided with a threaded hole 111. A group of the first through hole, the second through hole 1211 and the threaded hole 111 correspond to one screw 140. The screw 140 is sequentially fixed in the threaded hole 111 after passing through the first through hole and the second through hole 1211. The movable base 130 and the elastic isolation layer 120 are fixed on the fixed base 110 through the screw 140. It can be understood that the number of the first through hole, the second through hole 1211, the threaded hole 111 and the screw 140 is equal, and they are one-to-one correspondingly arranged. During adjustment, the depth of the three screws 140 inserted into the threaded hole 111 is adjusted according to the directivity required by the to-be-adjusted piece 200. The fixed base 110 and the movable base 130 are connected through the screw 140, and there is no risk of loosening under the condition that the fastening torque is sufficient. Moreover, the reliability can be increased by applying thread glue.

[0042] For example, the tightening torque requirement of the screw 140 in the embodiment is 1.2Nm-1.6Nm, and when the preliminary assembly is performed, the torque of the three screws 140 can be tightened to 1.4Nm, and then it is determined whether the position of the to-be-adjusted member 200 meets the requirement, and if not, it is determined in which direction the to-be-adjusted member 200 needs to be adjusted according to the azimuth angle, and then the tightening depth of the corresponding screw 140 is adjusted, so that the torque of the adjusting screw 140 is within the predetermined range.

[0043] Please refer to Figure 1 and Figure 4 Optionally, in an implementable manner of the embodiment of the present application, the connecting lines of the three connecting members form an equilateral triangle.

[0044] The axes of the three connecting members respectively pass through the three vertices of an equilateral triangle and are arranged perpendicularly to the surface of the equilateral triangle. In this way, the whole formed by the to-be-adjusted member 200 and the movable base 130 can be adjusted in a two-dimensional plane relative to the fixed base 110, and each connecting member is fully utilized, and the adjustment efficiency is high.

[0045] Please refer to Figure 1 and Figure 2 Optionally, in an implementable manner of the embodiment of the present application, the elastic isolation layer 120 includes three elastic isolation portions 121 which are separated from each other, and the three elastic isolation portions 121 are arranged in one-to-one correspondence with the connecting members.

[0046] The number of the elastic isolation portions 121 is equal to the number of the connecting members, and the elastic isolation portions 121 are arranged in position correspondence, and each elastic isolation portion 121 is used for allowing one connecting member to pass therethrough. The elastic isolation layer 120 is arranged as a plurality of separated parts, and the pointing accuracy of the adjustment is higher.

[0047] In other embodiments, the elastic isolation layer 120 can also be a whole part, and three second through holes are arranged on the elastic isolation layer 120, and the three connecting members pass through the three second through holes, respectively.

[0048] Please refer to Figure 3 and Figure 5 Optionally, in an implementable manner of the embodiment of the present application, the elastic isolation portion 121 includes a plurality of butterfly springs 1212 which are arranged in sequence.

[0049] Because the elastic coefficient and stiffness of a single disc spring cannot meet the requirements in general, the disc springs are usually stacked and used, and there are two forms of same-direction stacking and opposite-direction stacking, which can be freely combined. In actual application, the elastic force and deformation of the disc springs can be used in stacking, and according to the tightening torque requirement of the connecting piece in the structure design, only the number and arrangement of the disc springs need to be selected, so that the disc springs can have sufficient deformation under the condition of meeting the torque requirement. Therefore, as long as the tightening torque of the connecting piece during adjustment is greater than the required value, the adjustment and tightening effects of the adjustment point can be realized at the same time in the operation.

[0050] The elastic isolation part 121 can be directly formed by a disc spring meeting DIN2093 (DIN17221, DIN17222) or other similar standards, or can be formed by a single-piece disc spring made of a material meeting the above standards, such as 51CrV4. The specific size can be designed according to the actual required pre-tightening force and structure space, so that a single disc spring has the effect of several stacked standard parts, has better integrity, and is more convenient to use.

[0051] For example, the connecting piece is a screw 140, and according to the fastener tightening torque standard requirement, the torque value of the M3 screw 140 defined in the structure needs to be greater than 1.2 Nm. When selecting the type, the middle disc spring can be selected to withstand a torque of 1.2 Nm to 1.6 Nm, and the adjustment amount in this interval is sufficient. Then, during adjustment, the three screws 140 can be adjusted to 1.4 Nm first, and then according to the actual directivity requirement, the three screws 140 are adjusted to the required value within the range of 1.2 Nm to 1.6 Nm. The screw 140 stays at any position within this range, which meets the tightening requirement, and does not require additional tightening structure and operation.

[0052] Please refer to Figure 6 and Figure 7 Optionally, in an implementable manner of the embodiment of the present application, the elastic isolation part 121 further comprises an encapsulation cover 1213 and an encapsulation block 1214, the disc spring 1212 is arranged on the encapsulation block 1214, the encapsulation cover 1213 is sleeved on the disc spring 1212 and movably connected with the encapsulation block 1214, and the encapsulation cover 1213 and the encapsulation block 1214 are respectively provided with a third through hole 1213b and a fourth through hole 1214a for the connecting piece to pass through.

[0053] The butterfly spring 1212 is arranged on the packaging block 1214, and then packaged with the packaging cover 1213 to form a set of assemblies, so that the set of assemblies can be directly taken on the connecting piece during subsequent mass production installation, thereby improving the efficiency. One of the packaging cover 1213 and the packaging block 1214 is arranged towards the fixed base 110, and the other is arranged towards the movable base 130. The connecting piece penetrates the elastic isolation part 121 through the third through hole 1213b on the packaging cover 1213, the second through hole 1211 on the butterfly spring 1212, and the fourth through hole 1214a on the packaging block 1214. The packaging cover 1213 can slide relative to the packaging block 1214 along the axis direction of the connecting piece, so that the connecting piece can compress the butterfly spring 1212 inside to deform, and then the elastic isolation part 121 deforms.

[0054] Optionally, in an implementable manner of an embodiment of the present application, the packaging block 1214 is provided with a plurality of pressing pieces 1213a on the bottom of the packaging cover 1213, and the pressing pieces 1213a are bent towards the packaging block 1214 and abut against the conical surface 1214b. In this way, a plurality of butterfly springs 1212 can be packaged to form a set of assemblies, and the movable connection between the packaging cover 1213 and the packaging block 1214 can be ensured.

[0055] For example, the pressing pieces 1213a include four, which are uniformly distributed along the circumferential direction of the packaging cover 1213. The outer side of the pressing piece 1213a is provided with a notch 1213c, so as to facilitate the bending of the pressing piece 1213a towards the packaging block 1214.

[0056] Please refer to Figures 8 to 10 Optionally, in an implementable manner of an embodiment of the present application, the elastic isolation part 121 includes an elastic washer 1215.

[0057] As shown in Figure 8 and Figure 9 , the elastic washer 1215 can be processed from spring steel, stainless steel or other materials with elastic structure forms (not in the form of a butterfly spring 1212). For example, the elastic washer 1215 is in a hollow cylindrical shape, the outer wall of the elastic washer 1215 is provided with a plurality of annular grooves 1216 (not a complete circle) penetrating to the inner wall, and the plurality of annular grooves 1216 are staggered along the axial direction of the elastic washer 1215.

[0058] As shown in Figure 10 , a whole piece of material with elasticity, such as rubber or polyurethane composite material, can also be directly processed into a whole washer. The thickness is designed according to the required adjustment amount. Compared with the elastic washer 1215 made of metal material, it is simpler, does not require special design in structure, and has lower cost.

[0059] The elastic requirement of the elastic isolation layer 120 is designed or selected as follows:

[0060] According to the structure tolerance calculation, the adjustment amount of G (mm) of a single point is estimated, the diameter H (mm) of the screw 140 is used, and the torque range of U (Nm)-V (Nm) is expected to be adjusted. The elastic force range required at this time is calculated according to the formula:

[0061] F = (U-V) / (0.00026*H) (N), wherein F is the elastic force.

[0062] The elastic coefficient requirement of the elastic gasket designed or selected at this time is:

[0063] K = (U-V) / (0.00000026*G*H) (N / m), wherein K is the elastic coefficient.

[0064] For the standard coarse thread screw M3x0.5, the experimental torque requirement >1.2 Nm can meet the fastening requirements in the airborne and vehicle-mounted environments. The experimental groups No. 1, No. 2, No. 3 and No. 4 correspond to 1.2 Nm, 1.4 Nm, 1.6 Nm and 1.8 Nm respectively. The vibration and high-low temperature tests are carried out for many times within 2 months. The experimental conditions of the vibration test are as follows: frequency 10 Hz, acceleration 1.6 m / s 2 , time 60 s, acceleration slope 3; frequency 45 Hz, acceleration 20 m / s 2 , time 60 s, acceleration slope 3; frequency 200 Hz, acceleration 20 m / s 2 , time 60 s, acceleration slope 3; frequency 500 Hz, acceleration 20 m / s 2 , time 60 s, acceleration slope 3; the above is a group of cycles, and 15 groups of vibration tests are carried out once. The experimental conditions of the high-low temperature test are as follows: room temperature (25℃)→-20℃, cooling slope 3℃ / min, -20℃ for 6h; -20℃→65℃, heating slope 3℃ / min, 65℃ for 6h; 65℃→room temperature (25℃), cooling slope 3℃ / min; the above is a high-low temperature test. The directional deviation of the standard coarse thread screw M3x0.5 in X and Y directions is as follows:

[0065]

[0066] After many rounds of aging tests, the elastic structure selected by the above calculation method still has an angular second level of holding force.

[0067] Please refer to Figure 1The embodiment also provides an optical system, comprising an optical element and the two-dimensional adjusting device 100 according to any one of the preceding embodiments, wherein the optical element is arranged on the movable base 130 of the two-dimensional adjusting device 100.

[0068] The two-dimensional adjusting device 100 is applied to the optical system, and the optical element in the optical path can be two-dimensionally adjusted to meet the requirements of the optical path. The movable base 130 is provided with a mounting portion of the optical element. The optical element is assembled with the movable base 130, and the optical element can be pressed by the pressing piece 1213a or bonded by glue, which are conventional technical means in the field, and will not be described here. After the optical element is assembled with the movable base 130, the optical element and the movable base 130 are installed on the fixed base 110 as a whole, and are separated by the elastic isolation layer 120. The whole formed by the optical element and the movable base 130 can be two-dimensionally adjusted relative to the fixed base 110. The fixed base 110 in the two-dimensional adjusting device 100 can be a separate part or a part of the optical path structure.

[0069] The optical system comprises the same structure and beneficial effects as the two-dimensional adjusting device 100 in the preceding embodiments. The structure and beneficial effects of the two-dimensional adjusting device 100 have been described in detail in the preceding embodiments, and will not be described here.

[0070] Optionally, in an implementable manner of the embodiment, the fixed base 110 and the movable base 130 of the two-dimensional adjusting device 100 are both provided with a light passing hole 160, and the light passing hole 160 is used for allowing the light beam to pass through and irradiate on the optical element.

[0071] It should be noted that if the elastic isolation layer 120 is a whole structure, the light passing hole 160 also needs to be arranged on the elastic isolation layer 120 to avoid blocking the optical element. If the elastic isolation layer 120 is several separated parts, the light passing hole 160 does not need to be arranged, and the optical element only needs to be exposed.

[0072] The above only describes the preferred embodiments of the present application and should not be used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A two-dimensional adjustment device, characterized in that The two-dimensional adjusting device comprises a fixed base, an elastic isolation layer and a movable base arranged in sequence, and three connecting members which are connected with the fixed base after passing through the movable base and the elastic isolation layer in sequence, and the three connecting members are distributed in a triangular shape, and the connecting members can be adjusted relative to the fixed base to adjust the position of the movable base relative to the fixed base. The elastic isolation layer comprises three elastic isolation parts separated from each other, and the three elastic isolation parts are arranged one by one corresponding to the connecting members, the elastic isolation part comprises a plurality of butterfly springs arranged in sequence, the elastic isolation part further comprises an encapsulation cover and an encapsulation block, the butterfly spring is arranged on the encapsulation block, the encapsulation cover is sleeved on the butterfly spring and is movably connected with the encapsulation block, the encapsulation cover and the encapsulation block are respectively provided with third through holes and fourth through holes for the connecting members to pass through, the side of the encapsulation block away from the butterfly spring is provided with a tapered surface, the bottom of the encapsulation cover is provided with a plurality of pressing pieces, the plurality of pressing pieces are uniformly distributed along the circumferential direction of the encapsulation cover, the outer side of the pressing piece is provided with a notch, and the pressing piece is bent towards the encapsulation block and is attached to the tapered surface.

2. The two-dimensional adjustment device according to claim 1, characterized in that The connecting member is a screw, the movable base, the elastic isolation layer and the fixed base are sequentially provided with first through holes, second through holes and threaded holes, and the screw is fixed in the threaded hole after passing through the first through hole and the second through hole in sequence.

3. The two-dimensional adjustment device according to claim 1, characterized in that The three connecting members are distributed in an equilateral triangle shape.

4. An optical system characterized by comprising: The two-dimensional adjusting device comprises an optical element and a two-dimensional adjusting device as claimed in any one of claims 1 to 3, and the optical element is arranged on the movable base of the two-dimensional adjusting device.

5. The optical system of claim 4, wherein, The fixed base and the movable base of the two-dimensional adjusting device are both provided with a light transmission hole, and the light transmission hole is used for making a light beam pass through and irradiate on the optical element.

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