Optical mirror bracket passing through central axis

Abstract

The utility model relates to the technical field of optical lens brackets, in particular to an optical lens bracket passing through a central shaft. The problems that in the prior art, adjusting force is not uniform, errors exist, and consequently precision adjusting is poor are solved. According to the technical scheme, the optical lens comprises a movable piece and a fixed piece, an optical lens is arranged in the center of the movable piece, four V-shaped grooves are formed in the edge of the movable piece along the cross-shaped central axis of the movable piece respectively, precise thread pairs are arranged in the four V-shaped grooves respectively, the other ends of the precise thread pairs penetrate through the fixed piece, and the other ends of the precise thread pairs penetrate through the fixed piece. A top bead is arranged between each precise thread pair and the corresponding V-shaped groove; the four crossed end points of the movable piece and the fixed piece are connected through columnar springs respectively, and the distances between the connecting points of the two ends of each columnar spring and the center of the movable piece and the center of the fixed piece are equal.

Description

Technical Field

[0001] The utility model relates to the technical field of optical frames, in particular to an optical frame with a central axis. Background Art

[0002] Optical frames are one of the most commonly used optomechanical adjustment systems and are widely used in various optical instruments and optical experimental systems.

[0003] The structure of the existing optical frame is as follows Figure 1 , Figure 2 As shown, the optical lens 1 is fixed at the center of the movable plate 2, the movable plate 2 is connected to the fixed plate 4 through the columnar spring 3, the precision thread pair 1 5, the precision thread pair 2 6, and the precision thread pair 3 7 are respectively fixed at the edges of the fixed plate 4, and their front ends are respectively in contact with the edge of the movable plate 2 through the top bead 1 8, the top bead 2 9, and the top bead 3 10. In practice, the tensile elasticity of the columnar spring 3 is utilized and the angle of the optical lens 1 is adjusted by rotating the precision thread pair 1 5 and the precision thread pair 3 7, that is, the precision thread pair 1 5 is rotated to adjust the pitch angle, and the precision thread pair 7 is rotated to adjust the left and right angles.

[0004] From the structure, it can be seen that the rotation axis during the angle adjustment process is located on the straight line where the contact points of top bead 1 8, top bead 2 9, top bead 3 10 and the moving plate are located, that is, the central axis of the pitch angle adjustment is the straight line where top bead 2 9 and top bead 3 10 are located, and the central axis of the left and right angle adjustment is the straight line where top bead 1 8 and top bead 2 9 are located. It is obvious that both central axes are located at the edge of the moving plate and do not pass through the central axis of the optical lens 1. Therefore, when it rotates, it rotates around the edge of the frame, which will cause the lens 1 to rotate asymmetrically. Therefore, during the frame adjustment process, not only the angle of the optical lens 1 is adjusted, but also the orientation of the lens 1 is adjusted, and there is an obvious adjustment error. At the same time, the spring 3 connecting the moving plate 2 and the fixed plate 4 is also located at the edge of the frame, resulting in the point of force being significantly deviated from the center of the lens during the adjustment process, with obvious torque, uneven adjustment force, and not conducive to precise adjustment. Utility Model Content

[0005] In view of this, the utility model provides an optical frame with a through-center axis to solve the problems of uneven adjustment force and errors in the prior art, resulting in poor adjustment accuracy.

[0006] Compared with the prior art, the technical solution adopted by the utility model is: an optical frame through the central axis, including a moving piece and a fixed piece, an optical lens is arranged at the center of the moving piece, characterized in that four "V"-shaped grooves are arranged on the edge of the moving piece along the cross central axis of the moving piece, and precision thread pairs are arranged in the four "V"-shaped grooves, and the other end of the precision thread pair passes through the fixed piece, and a top bead is arranged between each precision thread pair and the "V"-shaped groove. Furthermore, the four end points of the "cross" of the moving piece and the fixed piece are connected by columnar springs respectively, and the distances between the two end connection points of the columnar spring and the center of the moving piece and the fixed piece are equal.

[0007] Compared with the prior art, the beneficial effects are:

[0008] 1) The angle adjustment center axis of the utility model is located at the center of the optical lens, and there is no azimuth misalignment error;

[0009] 2) The pitch angle and left and right angle of the utility model can be adjusted by two precision thread pairs, making the adjustment more flexible;

[0010] 3) The central axis in the horizontal and vertical directions of the utility model is fixed by two "V"-shaped grooves respectively. The "V"-shaped grooves in the two directions are a "cross-shaped" structure, which makes the adjustment more precise and is conducive to the long-term stability of the adjustment system.

[0011] 4) The four columnar springs of the utility model connect the movable plate and the fixed plate, and are respectively arranged at the four end points of the "cross", and the four springs are symmetrical relative to the center of the lens. During the adjustment process, the interaction force between the movable plate and the fixed plate is more uniform, and the overall effect of the torque of the four springs relative to the center of the lens is almost zero, which is conducive to improving the adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an existing optical frame;

[0013] Figure 2 for Figure 1 Right view of;

[0014] Figure 3 It is a schematic diagram of the structure of the utility model;

[0015] Figure 4 for Figure 3 Right view of;

[0016] Marking instructions: 1-optical lens, 2-moving plate, 3-column spring one, 4-fixed plate, 5-precision thread pair one, 6-precision thread pair two, 7-precision thread pair three, 8-top bead one, 9-top bead two, 10-top bead three, 11-"V" type groove one, 12-"V" type groove two, 13-"V" type groove three, 14-"V" type groove four, 15-precision thread pair four, 16-precision thread pair five, 17-precision thread pair six, 18-precision thread pair seven, 19-column spring two, 20-column spring three, 21-column spring four, 22-column spring five. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] This embodiment: an optical frame passing through the central axis, such as Figure 3 and 4 As shown, it includes a moving plate 2 and a fixed plate 4, an optical lens 1 is arranged at the center of the moving plate 2, and a "V"-shaped groove 11, a "V"-shaped groove 2 12, a "V"-shaped groove 3 13 and a "V"-shaped groove 4 14 are respectively arranged on the edge of the moving plate 2 along the cross center axis of the moving plate, and each "V"-shaped groove is respectively provided with a corresponding precision thread pair (precision thread pair 4 15, precision thread pair 5 16, precision thread pair 6 17 and precision thread pair 7 18), and the other end of the precision thread pair passes through the fixed plate 4, and a top ball is arranged between each precision thread pair and the "V"-shaped groove.

[0019] As an implementation method in this embodiment, the four end points of the "cross" of the moving plate 2 and the fixed plate 4 are respectively connected by a columnar spring 2 19, a columnar spring 3 20, a columnar spring 4 21 and a columnar spring 5 22, and the connection points at both ends of the columnar spring are equidistant from the center of the moving plate 2 and the fixed plate 4. Figure 4 shown.

[0020] Working process of this utility model:

[0021] In practice, by adjusting the precision thread pair four 15 and the precision thread pair five 16, the pitch angle adjustment of the optical lens 1 can be achieved, and the center axis is determined by the "V"-shaped groove three 13 and the "V"-shaped groove four 14, and the center axis coincides with the horizontal center axis of the optical lens 1; by adjusting the precision thread pair six 17 and the precision thread pair seven 18, the left and right angle adjustment of the optical lens 1 can be achieved, and the center axis is determined by the "V"-shaped groove one 11 and the "V"-shaped groove two 12, and the center axis coincides with the vertical direction 1 center axis of the optical lens.

[0022] By adjusting the cylindrical spring 2 19 , the cylindrical spring 3 20 , the cylindrical spring 4 21 and the cylindrical spring 5 22 , the interaction force between the moving plate and the fixed plate is more uniform during the adjustment process, and the overall effect of the torque of the four springs relative to the center of the lens is almost zero, which is beneficial to improving the adjustment accuracy.

[0023] In the above description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed above.

[0024] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical frame with a central axis, comprising a moving plate (2) and a fixed plate (4), wherein an optical lens (1) is arranged at the center of the moving plate (2), characterized in that: Four "V"-shaped grooves are respectively arranged at the edge of the movable plate (2) along the cross center axis of the movable plate, and precision thread pairs are respectively arranged in the four "V"-shaped grooves. The other end of the precision thread pair passes through the fixed plate (4), and a top ball is arranged between each precision thread pair and the "V"-shaped groove.

2. The optical frame with a central axis according to claim 1, characterized in that: The four end points of the "cross" of the moving plate (2) and the fixed plate (4) are respectively connected by columnar springs, and the connection points at both ends of the columnar springs are equidistant from the centers of the moving plate (2) and the fixed plate (4).

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