Freedom-degree-adjustable assembly and three-freedom-degree adjusting device

Abstract

The invention discloses a degree-of-freedom adjustable assembly, belongs to the technical field of optical adjustment platforms, and at least solves the technical problem of high cost in the prior art. The optical lens adjusting device is suitable for adjusting an optical lens and comprises a connecting plate, a wedge block, a moving part and a pushing assembly, a preset number of balls are mounted on the bottom surface of the wedge block, so that the wedge block can roll on the bearing plate; one end of the moving part is detachably connected with the connecting plate, and the other end of the moving part can slide on the wedge block; the pushing assembly pushes the wedge block to slide on the bearing plate by a preset length, and at least can adjust the optical lens in the vertical direction. The moving part is used for replacing a spring, the using precision is improved, and the structure is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of optical adjustment platform devices, and in particular relates to a freedom adjustable component and a three-freedom adjustment device. Background Art

[0002] In the prior art, the degree of freedom adjustment mechanism of precision devices is to achieve fine adjustment of the system posture through a lead screw mechanism or a stewart mechanism driven by a motor, but the above mechanism has the characteristics of large space size, high weight, complex mechanism, high price, etc. For example, publication number CN101488371 discloses a 6-degree-of-freedom precision motion platform, which is connected and matched by a wedge and a vertical flexible spring, resulting in reduced adjustment accuracy, large size of the adjusted mechanism and troublesome installation.

[0003] In view of this, the present invention is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a component with adjustable degrees of freedom, which at least solves the technical problem of low adjustment accuracy in the prior art. The technical solution of this case has many technical benefits, as described below:

[0005] Provided is a freedom adjustable component suitable for adjusting an optical lens, comprising a connecting plate, a wedge block, a moving part and a pushing component, wherein:

[0006] The connecting plate is connected to the optical lens;

[0007] A preset number of balls are installed on the bottom surface of the wedge block so that the wedge block can roll on the bearing plate;

[0008] The moving member has one end detachably connected to the connecting plate and the other end capable of sliding on the wedge block;

[0009] The pushing assembly pushes the wedge block to slide on the bearing plate for a preset length, and can at least adjust the optical lens in the vertical direction.

[0010] Secondly, a three-degree-of-freedom adjustment device is provided, which is suitable for adjusting an optical lens in an optical system, comprising a carrier plate, a plurality of horizontal adjustment mechanisms mounted on the carrier plate, and a plurality of adjustable degree-of-freedom components as described in part or in whole above, wherein:

[0011] The horizontal adjustment mechanism and the freedom adjustable component are respectively connected to the optical lens, and can adjust the position of the optical lens with three degrees of freedom.

[0012] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0013] The device provided in this case replaces the setting of the spring by setting a moving part. Under the drive of the pushing component, the moving part pushes the connecting plate to move in the vertical direction, and the pushing component and the moving component achieve a large differential conversion. For example, the conversion rate is 10:1, the pushing component pushes 10mm, and the moving part moves 1mm in the vertical direction, ensuring the accuracy of the vertical adjustment of the optical lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a front cross-sectional view of the adjustable freedom assembly A of the present invention;

[0016] Figure 2 A top view of the three-degree-of-freedom adjustment device of the present invention;

[0017] Figure 3 is a top view of the first level adjustment assembly B of the present invention;

[0018] Figure 4 is a top view of the second level adjustment assembly C of the present invention;

[0019] in:

[0020] 3. Connecting plate; 4. Ball joint; 7. Moving plate; 8. Micrometer screw; 9. Wedge; 10. Steel ball; A. First horizontal adjustment component; B. Second horizontal adjustment component; C. Adjustable degree of freedom component; 41. First fixed plate; 42. Second fixed plate; 43. First waist-shaped hole; 44. Second waist-shaped hole; 45. Third waist-shaped hole; 46. Fourth waist-shaped hole; 47. First precision screw; 48. Second precision screw; 30. Optical lens; 14. Load-bearing plate. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0022] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present invention, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0023] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. The drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0024] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that aspects can be practiced without these specific details. In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise stated, "multiple" means two or more.

[0025] like Figure 1The 30-degree-of-freedom adjustable component C is suitable for adjusting an optical lens, for example, a square optical lens in the prior art. The 30-degree-of-freedom adjustable component C includes a connecting plate 3, a wedge block 9, a moving part and a pushing component, wherein:

[0026] The connecting plate 3 is connected to the optical lens;

[0027] A preset number of balls are installed on the bottom surface of the wedge block 9 so that the wedge block 9 can roll on the bearing plate 14;

[0028] A movable member, one end of which is detachably connected to the connecting plate 3 and the other end of which is capable of sliding on the wedge block 9;

[0029] The pushing assembly pushes the wedge block 9 to slide on the bearing plate 14 by a preset length, so as to adjust the optical lens at least in the vertical direction.

[0030] Compared with the degree of freedom adjustment device of the spring assembly in the prior art, the present invention has a simple structure, which avoids the occurrence of the elastic coefficient of the spring during use, resulting in reduced performance of the test or use of the optical lens, and improves the adjustment accuracy by converting the movement in the horizontal direction into the movement in the vertical direction. For example, the pushing assembly includes a micrometer screw 8, the micrometer screw 8 moves 10 mm in the horizontal direction, and the moving part moves 1 mm in the vertical direction, thereby achieving the purpose of precise adjustment, and is easy to operate, allowing a larger tolerance for relative errors of horizontal input, thereby improving the performance of the overall device.

[0031] As a specific implementation method provided in this case, the wedge block 9 is provided with an inclined surface with a preset angle, such as an acute angle, preferably between 10°-30°. One end of the movable part is connected to the connecting plate 3 in a threaded manner, and the other end moves or slides on the inclined surface, and / or the inclined surface is provided with a V-shaped groove to limit the range of motion of the movable part. The ball joint 4 is moved in the vertical direction by moving the wedge block 9. The inclination angle of the wedge block 9 can achieve the amplification of the adjustment accuracy and the reduction of the adjustment resistance. A certain number of evenly distributed flat-bottom holes are processed on the bottom of the movable plate 7, and a steel ball 10 is installed in each flat-bottom hole.

[0032] Furthermore, the moving part is a ball joint 4, which includes a sliding ball and a ball rod. The sliding ball is embedded in the bottom of the ball rod in a movable manner and can slide on the inclined surface or V-shaped groove. One end of the ball rod is threadedly connected to the connecting plate 3, wherein:

[0033] When the push assembly drives the wedge block 9 to move in the horizontal direction, the sliding ball moves along the inclined surface to drive the connecting plate 3 in the vertical direction. A V-shaped groove matching the ball joint 4 is processed on the inclined surface, and the ball joint 4 is placed in the V-shaped groove to form a self-centering motion mechanism.

[0034] As a specific implementation method provided in this case, the pushing assembly includes a micrometer screw 8 and a moving plate 7, wherein:

[0035] The moving plate 7 is connected to the bearing plate 14, one end of the micrometer screw 8 passes through the moving plate 7 and extends to a side of the wedge block 9 or a contact connection, and extends into the side of the wedge block 9 to open a waist-shaped groove, wherein: the adjustment of the micrometer screw 8 drives the wedge block 9 to move in the horizontal direction, and the wedge block 9 moves relative to the micrometer screw 8 under the action of the waist-shaped groove. For example, the wedge block 9 must move along the X-axis and Y-axis directions on the bearing plate 14 to avoid damage to the micrometer and ensure the completion of the adjustment test.

[0036] During installation, a certain installation gap is formed between the wedge block 9 and the movable plate 7 .

[0037] like Figure 2 As shown, a three-degree-of-freedom adjustment device is provided, which is suitable for adjusting an optical lens in an optical system, including a carrier plate 14 and a plurality of horizontal adjustment mechanisms mounted on the carrier plate 14 and a plurality of adjustable degree-of-freedom components C as described in part or in whole above, wherein:

[0038] The horizontal adjustment mechanism and the freedom adjustable component C are respectively connected to the optical lens, and can adjust the position of the optical lens with three degrees of freedom.

[0039] Further, the horizontal adjustment mechanism includes a first horizontal adjustment component A arranged in the X-axis direction and a second horizontal adjustment component B arranged in the Y-axis direction, and the second horizontal adjustment component B is symmetrically arranged along the optical lens, wherein:

[0040] like Figure 3 As shown, the first horizontal adjustment assembly A includes a first fixing plate 41 and a first precision screw 47. The first fixing plate 41 is provided with a first waist-shaped hole 43 along the X-axis direction. The first waist-shaped hole 43 is installed with a locking member. The locking member is used to complete the locking or loosening of the carrier plate 14 with the first fixing plate 41 at different positions in the X-axis direction. The movement of the first precision screw 47 can drive the optical lens to move relative to the carrier plate 14 along the X-axis direction.

[0041] like Figure 4 As shown, the second horizontal adjustment component B includes a second fixed plate 42 and a second precision screw 48. The second fixed plate 42 is provided with a second waist-shaped hole 44 along the Y-axis direction. The second waist-shaped hole 44 is installed with a locking member. The locking member is used to complete the locking or loosening of the supporting plate 14 with the first fixed plate 41 at different positions in the Y-axis direction. The movement of the second precision screw 48 can drive the optical lens to move relative to the supporting plate 14 along the Y-axis direction.

[0042] The above described locking or loosening is achieved by using screw holes or arc-shaped or linear gradient structure grooves arranged at intervals on the carrier plate 14 in cooperation with the screw assembly to achieve fixation or loosening with the carrier plate 14. Preferably, the screw holes arranged at intervals are used in cooperation with the screw assembly.

[0043] As a specific embodiment provided in this case, the pushing assembly includes a moving plate 7, the moving plate 7 is fixedly connected to the bearing plate 14 by a screw assembly 6, the degree of freedom adjustable assembly C includes a connecting plate 3, the wedge block 9 and the connecting plate 3 are respectively provided with a third waist-shaped hole 45 and a fourth waist-shaped hole 46 along the X-axis direction, and the spacing between the third waist-shaped hole 45 and the fourth waist-shaped hole 46 in the Y-axis direction is a preset length;

[0044] The third waist-shaped hole 45 and the fourth waist-shaped hole 46 are respectively provided with locking pieces, wherein: the locking piece cooperates with the third waist-shaped hole 45 to lock or loosen the wedge block 9 and the bearing plate 14. The locking piece cooperates with the fourth waist-shaped hole 46 to lock or loosen the moving plate 7 and the connecting plate 3. Figure 1 and Figure 2 As shown, in the Y-axis direction, two parallel third waist-shaped holes 45 are provided on the wedge block 9, and the third waist-shaped holes 45 are installed with screw assemblies 5 to complete the locking or loosening of the wedge block 9 and the bearing plate 14. In the Y-axis direction, two fourth waist-shaped holes 46 are provided on the connecting plate 3, and the fourth waist-shaped holes 46 are installed with screw assemblies 2 to complete the locking or loosening between the moving plate 7 and the connecting plate 3.

[0045] As a specific implementation method provided in this case, the freedom adjustable component C and the first horizontal adjustment component A are symmetrically arranged along the optical lens. Specifically, the number of the freedom adjustable component C and the first horizontal adjustment component A is three, which are arranged in a triangular symmetrical manner. Figure 2 The placement direction is for reference. Two degrees of freedom adjustable components C are installed on the left side of the optical lens and close to the top glue, and one is installed in the middle of the right side. The first horizontal adjustment component A has one on the left and two on the right, forming a triangular symmetrical installation. The number of the second horizontal adjustment components B is two and they are symmetrically arranged along the Y axis to ensure the symmetry and accuracy of the adjustment and achieve three-degree-of-freedom adjustment. The screw assembly is a product of the prior art, slightly different from the bolt. The connecting plate 3 in the above is preferably an L-shaped structure, which is connected to the optical lens through the screw assembly 1.

[0046] Adjustment method of degree of freedom posture adjustment mechanism:

[0047] Different positions of the same device are numbered. The first horizontal adjustment component 13 is located in the middle of the left side of the optical lens. The first horizontal adjustment component 17 and the first horizontal adjustment component 19 are located at the upper right and lower right positions of the optical lens respectively. The second horizontal adjustment component 16 and the second horizontal adjustment component 20 are located in the middle of the front and back of the optical lens respectively. The degree of freedom adjustable component 11 and the degree of freedom adjustable component 15 are located at the upper left and lower left of the optical lens respectively, and the degree of freedom adjustable component 18 is located in the middle right position of the optical lens.

[0048] The lens 12 is adjusted in the Dx direction by adjusting the respective micrometer screws 8 of the first horizontal adjustment component 13, the first horizontal adjustment component 17 and the first horizontal adjustment component 19 in the X direction, wherein the adjustable degree of freedom component 11, the adjustable degree of freedom component 15 and the adjustable degree of freedom component 17 move together with the lens.

[0049] The lens is adjusted in the Dy direction by adjusting the second horizontal adjustment component 16 in the Y direction and the second horizontal adjustment component 20 corresponding to the second precision screw 48 (thousandth screw), wherein the adjustable degree of freedom component 11, the adjustable degree of freedom component 15 and the adjustable degree of freedom component 17 move with the lens 12.

[0050] Tighten the first precision screw 47 (thousandth screw) of the X-axis first horizontal adjustment component 13, loosen the screws of the Y-axis second horizontal adjustment component 16 and the second horizontal adjustment component 20, and realize the rotation of the lens in the Rz direction by adjusting the first precision screw 47 of the X-axis first horizontal adjustment component 17 and the first horizontal adjustment component 19, wherein the adjustable degree of freedom component 11, the adjustable degree of freedom component 15 and the adjustable degree of freedom component 17 move together with the lens.

[0051] When the lens is adjusted in place in the Dx, Dy and Rz directions, the screw assembly 5 and the screw assembly 6 in the adjustable freedom assembly 11, the adjustable freedom assembly 15 and the adjustable freedom assembly 18 are locked and the screw assembly 2 is loosened, so that the lens is locked and cannot move in the X, Y and Rz directions, and the second precision screw 48 and the first precision screw 47 of the second horizontal adjustment assembly 16 in the Y direction, the first horizontal adjustment assembly 17 in the X direction, the first horizontal adjustment assembly 19 in the X direction, the second horizontal adjustment assembly 20 in the Y direction and the first horizontal adjustment assembly 13 in the X direction are loosened for limiting. The lens is adjusted in the Dz, Rx and Ry directions by adjusting the micrometer screw 8 of the adjustable freedom assembly 11 and the adjustable freedom assembly 15, and the corresponding first precision screw in the adjustable freedom assembly 17.

[0052] When the lens is adjusted in place in the Dz, Rx and Ry directions, the screw components 2 in the adjustable freedom component 11, the adjustable freedom component 15 and the adjustable freedom component 18 are locked at the same time.

[0053] The lens can be adjusted in the directions of Dx, Dy, Dz, Rx, Ry and Rz according to the above operations.

[0054] The above is a detailed introduction to the product provided by the present invention. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of invention, several improvements and modifications can be made to the invention, and these improvements and modifications also fall within the scope of protection of the invention claims.

Claims

1. A degree of freedom adjustable component, suitable for adjusting an optical lens, characterized in that: It includes a connecting plate, a wedge block, a moving part and a pushing component, wherein: The connecting plate is connected to the optical lens; A preset number of balls are installed on the bottom surface of the wedge block so that the wedge block can roll on the bearing plate; The moving member has one end detachably connected to the connecting plate and the other end capable of sliding on the wedge block; The pushing assembly pushes the wedge block to slide on the bearing plate for a preset length, and can at least adjust the optical lens in the vertical direction.

2. The adjustable degree of freedom assembly according to claim 1, characterized in that: The wedge block is provided with an inclined surface with a preset angle, one end of the movable member is connected to the connecting plate in a threaded manner, and the other end moves on the inclined surface, and / or the inclined surface is provided with a V-shaped groove to limit the range of movement of the movable member.

3. The adjustable degree of freedom assembly according to claim 2, characterized in that: The movable part is a ball joint, which includes a sliding ball and a ball rod. The sliding ball is embedded in the bottom of the ball rod in a movable manner and can slide on the inclined surface or the V-shaped groove. One end of the ball rod is threadedly connected to the connecting plate, wherein: When the pushing assembly drives the wedge block to move in the horizontal direction, the sliding ball moves along the inclined surface to drive the connecting plate in the vertical direction.

4. The adjustable degree of freedom assembly according to claim 1, characterized in that: The pushing assembly includes a micrometer screw and a moving plate, wherein: The movable plate is connected to the bearing plate, one end of the micrometer screw passes through the movable plate and extends to a side surface of the wedge block or is in contact connection, and extends into the side surface of the wedge block to form a waist-shaped groove, wherein: The adjustment of the micrometer screw drives the wedge block to move in the horizontal direction; The wedge block moves relative to the micrometer screw under the action of the waist-shaped groove.

5. A three-degree-of-freedom adjustment device, suitable for adjusting an optical lens in an optical system, characterized in that: It comprises a bearing plate, a plurality of level adjustment mechanisms mounted on the bearing plate, and a plurality of adjustable freedom degree components according to any one of claims 1 to 4, wherein: The horizontal adjustment mechanism and the freedom adjustable component are respectively connected to the optical lens, and can adjust the position of the optical lens with three degrees of freedom.

6. The three-degree-of-freedom adjustment device according to claim 5, characterized in that: The horizontal adjustment mechanism includes a first horizontal adjustment component arranged in the X-axis direction and a second horizontal adjustment component arranged in the Y-axis direction, wherein the second horizontal adjustment component is symmetrically arranged along the optical lens, wherein: The first horizontal adjustment assembly includes a first fixing plate and a first precision screw, the first fixing plate is provided with a first waist-shaped hole along the X-axis direction, a locking member is installed in the first waist-shaped hole, and the locking member is used to complete the locking or loosening of the carrier plate and the first fixing plate at different positions in the X-axis direction, and the movement of the first precision screw can drive the optical lens to move relative to the carrier plate along the X-axis direction; The second horizontal adjustment assembly includes a second fixed plate and a second precision screw. The second fixed plate is provided with a second waist-shaped hole along the Y-axis direction. The second waist-shaped hole is installed with a locking piece. The locking piece is used to lock or loosen the supporting plate with the first fixed plate at different positions in the Y-axis direction. The movement of the second precision screw can drive the optical lens to move relative to the supporting plate along the Y-axis direction.

7. The three-degree-of-freedom adjustment device according to claim 6, characterized in that: The pushing assembly includes a moving plate, and the moving plate is fixedly connected to the carrying plate; the adjustable degree of freedom assembly includes a connecting plate, and the wedge block and the connecting plate are respectively provided with a third waist-shaped hole and a fourth waist-shaped hole along the X-axis direction, and the spacing between the third waist-shaped hole and the fourth waist-shaped hole in the Y-axis direction is a preset length; The third waist-shaped hole and the fourth waist-shaped hole are respectively installed with locking pieces, wherein: the locking piece cooperates with the third waist-shaped hole to lock or loosen the wedge block and the supporting plate; the locking piece cooperates with the fourth waist-shaped hole to lock or loosen the movable plate and the connecting plate.

8. The three-degree-of-freedom adjustment device according to claim 6, characterized in that: The optical lens is a square optical lens.

9. The three-degree-of-freedom adjustment device according to claim 6, characterized in that: The adjustable degree of freedom component and the first level adjustment component are symmetrically arranged along the optical lens.

10. The three-degree-of-freedom adjustment device according to claim 9, characterized in that: The number of the adjustable freedom components and the first horizontal adjustment components is three, and they are arranged in a triangular symmetrical manner.

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