An adjustment mechanism for an optical system

Abstract

The present invention relates to the field of scientific imaging technology, and in particular to an adjustment mechanism for an optical system. A first adjustment component, a second adjustment component, and a third adjustment component are respectively arranged at any three corner positions of the four corner positions of a corresponding square on the lower surface of the lens base; through the mutual cooperation of the first adjustment component, the second adjustment component, and the third adjustment component, a displacement occurs in different directions. Since three points form a plane, changing the height of any point will cause the entire plane to tilt and change the center position, thereby achieving the effect of adjusting the center position and tilt angle of the optical system, and then obtaining the best imaging quality.

Description

Technical Field

[0001] The invention relates to the technical field of scientific imaging, and in particular to an adjustment mechanism for an optical system. Background Art

[0002] The optical center of many optical systems is neither coincident nor parallel to the optical center of the camera; and the focal length is not the optimal position of the optical focal length; these will have a great impact on high-quality imaging. No matter how the mechanical structure improves the accuracy, the parallelism between the optical center and the sensor center and the optical back focal length are definitely not optimal.

[0003] Although the existing adjustment mechanism can minimize the error and make the image quality as close to the best effect of optical imaging as possible, no matter how well the optical center of the camera is made, it is impossible to reach the center completely. The same is true for the optical system, which has a certain degree of eccentricity. The final combination will have a larger eccentricity error, resulting in a decrease in image quality. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an adjustment mechanism for an optical system, which can effectively adjust the center position and tilt angle of the optical system so that the imaging quality reaches the best effect of optical imaging.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An adjustment mechanism for an optical system, comprising a mirror base in a square shape and arranged horizontally, a mounting seat for assembling an optical device is provided at a central position of an upper surface of the mirror base, and a first adjustment component, a second adjustment component and a third adjustment component are respectively provided at any three corner positions of the four corner positions of the square corresponding to the lower surface of the mirror base;

[0007] The first adjustment component includes a circular positioning hole integrally formed on the lower surface of the mirror base and a first adjustment screw disposed at the circular positioning hole and matched with the circular positioning hole;

[0008] The second adjustment assembly includes a V-shaped positioning hole integrally formed on the lower surface of the mirror holder and a second adjustment screw disposed at the V-shaped positioning hole and matched with the V-shaped positioning hole;

[0009] The third adjustment component includes a plane boss integrally formed on the lower surface of the mirror base and a third adjustment screw disposed at the plane boss and matched with the plane boss.

[0010] The beneficial effects of the present invention are:

[0011] The present invention provides an adjustment mechanism for an optical system, wherein a first adjustment component, a second adjustment component and a third adjustment component are respectively arranged at any three angular positions of the four angular positions of a corresponding square on the lower surface of the lens base; through the mutual cooperation of the first adjustment component, the second adjustment component and the third adjustment component, offsets occur in different directions, and since three points form a plane, changing the height of any point will cause the entire plane to tilt and change the center position, thereby achieving the effect of adjusting the center position and the tilt angle of the optical system, and then obtaining the best imaging quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of an adjustment mechanism for an optical system of the present invention;

[0013] Figure 2 A bottom view of a lens holder for an adjustment mechanism of an optical system according to the present invention;

[0014] Figure 3 It is a structural schematic diagram of a lens holder of an adjustment mechanism for an optical system of the present invention;

[0015] Figure 4 It is a structural schematic diagram of a first adjustment component, a second adjustment component and a third adjustment component of an adjustment mechanism for an optical system of the present invention;

[0016] Description of labels:

[0017] 1. Mirror seat; 2. Mounting seat; 3. Circular positioning hole; 4. First adjusting screw; 5. V-shaped positioning hole; 6. Second adjusting screw; 7. Planar boss; 8. Third adjusting screw; 9. Force applying device. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0019] Please refer to Figure 1-Figure 4 The present invention provides an adjustment mechanism for an optical system, comprising a square-shaped and horizontally arranged mirror base, a mounting seat for assembling optical devices is provided at the central position of the upper surface of the mirror base, and a first adjustment component, a second adjustment component and a third adjustment component are respectively provided at any three angular positions of the four angular positions of the square corresponding to the lower surface of the mirror base;

[0020] The first adjustment component includes a circular positioning hole integrally formed on the lower surface of the mirror base and a first adjustment screw disposed at the circular positioning hole and matched with the circular positioning hole;

[0021] The second adjustment assembly includes a V-shaped positioning hole integrally formed on the lower surface of the mirror holder and a second adjustment screw disposed at the V-shaped positioning hole and matched with the V-shaped positioning hole;

[0022] The third adjustment component includes a plane boss integrally formed on the lower surface of the mirror base and a third adjustment screw disposed at the plane boss and matched with the plane boss.

[0023] From the above description, it can be seen that the beneficial effects of the present invention are:

[0024] The present invention provides an adjustment mechanism for an optical system, wherein a first adjustment component, a second adjustment component and a third adjustment component are respectively arranged at any three angular positions of the four angular positions of a corresponding square on the lower surface of the lens base; through the mutual cooperation of the first adjustment component, the second adjustment component and the third adjustment component, offsets occur in different directions, and since three points form a plane, changing the height of any point will cause the entire plane to tilt and change the center position, thereby achieving the effect of adjusting the center position and the tilt angle of the optical system, and then obtaining the best imaging quality.

[0025] Furthermore, the first adjusting screw, the second adjusting screw and the third adjusting screw are all arranged perpendicularly to the lower surface of the mirror base.

[0026] It can be seen from the above description that the adjustment accuracy can be ensured through the above settings.

[0027] Furthermore, a force applying device for applying force toward the mirror seat is provided at the edge of the upper surface of the mirror seat.

[0028] It can be seen from the above description that by providing a force-applying device, the first adjusting screw, the second adjusting screw and the third adjusting screw can be kept in close contact with their respective matching parts, thereby further ensuring the adjustment accuracy.

[0029] Furthermore, the first adjustment component, the second adjustment component and the third adjustment component are distributed in an isosceles right triangle, and the first adjustment component is located at the right angle of the isosceles right triangle. The number of the force-applying devices is two, and the two force-applying devices are respectively located between the first adjustment component and the second adjustment component and between the first adjustment component and the third adjustment component.

[0030] It can be seen from the above description that through the above arrangement, a balance between the applied force and the received force can be achieved, which is also for ensuring the adjustment accuracy.

[0031] Furthermore, the V-shaped positioning hole is a strip groove extending toward the circular positioning hole and having a V-shaped vertical cross section.

[0032] Furthermore, the center point of the circular positioning hole is located at the axis where the top end of the V-shape corresponding to the strip groove is located.

[0033] It can be seen from the above description that the above design can meet the adjustment requirements.

[0034] Furthermore, the force-applying device is a compression spring, one end of the compression spring is fixedly connected to the edge of the upper surface of the mirror holder, and the other end of the compression spring is in contact with the supporting portion of the external device.

[0035] It can be seen from the above description that using a compression spring as a force applying device has a simple structure and is easy to implement.

[0036] Furthermore, a movable steel ball structure is embedded in one end of the first adjusting screw that cooperates with the circular positioning hole; a movable steel ball structure is embedded in one end of the second adjusting screw that cooperates with the V-shaped positioning hole; and a movable steel ball structure is embedded in one end of the third adjusting screw that cooperates with the planar boss.

[0037] It can be seen from the above description that the above structure facilitates adjustment.

[0038] Please refer to Figure 1-Figure 4 , Embodiment 1 of the present invention is:

[0039] The present invention provides an adjustment mechanism for an optical system, comprising a square and horizontally arranged lens base 1, a mounting base 2 for assembling an optical device is provided at a central position of the upper surface of the lens base 1, and a first adjustment component, a second adjustment component and a third adjustment component are respectively provided at any three angular positions of the four angular positions of the square corresponding to the lower surface of the lens base 1; the optical device may be a camera.

[0040] The first adjustment component comprises a circular positioning hole 3 integrally formed on the lower surface of the mirror base and a first adjustment screw 4 disposed at the circular positioning hole 3 and matched with the circular positioning hole 3;

[0041] The second adjustment assembly includes a V-shaped positioning hole 5 integrally formed on the lower surface of the mirror base and a second adjustment screw 6 disposed at the V-shaped positioning hole 5 and matched with the V-shaped positioning hole 5; the V-shaped positioning hole 5 is a strip groove extending toward the circular positioning hole 3 and having a V-shaped vertical cross section. The center point of the circular positioning hole is located at the axis where the top end of the V-shape of the strip groove is located.

[0042] The third adjustment assembly includes a planar boss 7 integrally formed on the lower surface of the mirror base and a third adjustment screw 8 disposed at the planar boss 7 and matched with the planar boss 7 .

[0043] The first adjustment component, the second adjustment component and the third adjustment component are distributed in an isosceles right triangle, and the first adjustment component is located at the right angle of the isosceles right triangle, and the first adjustment screw 4, the second adjustment screw 6 and the third adjustment screw 8 are all arranged vertically with the lower surface of the mirror base 1. A movable steel ball structure is embedded in one end of the first adjustment screw 4 that matches the circular positioning hole; a movable steel ball structure is embedded in one end of the second adjustment screw 6 that matches the V-shaped positioning hole; and a movable steel ball structure is embedded in one end of the third adjustment screw 8 that matches the planar boss.

[0044] A force-applying device 9 for applying force in the direction of the mirror base is provided at the edge of the upper surface of the mirror base 1. There are two force-applying devices 9, which are respectively located between the first adjustment component and the second adjustment component and between the first adjustment component and the third adjustment component. By providing the force-applying device, the first adjustment screw, the second adjustment screw and the third adjustment screw can be kept in close contact with their respective mating parts, thereby further ensuring the adjustment accuracy. Through the above arrangement, a balance between the applied force and the received force can be achieved, which is also to ensure the adjustment accuracy.

[0045] In this embodiment, the force applying device 9 is a compression spring, one end of which is fixedly connected to the edge of the upper surface of the lens holder, and the other end of which is in contact with the supporting portion of the external device. The compression spring is used as the force applying device, which has a simple structure and is easy to implement.

[0046] The working principle of an adjustment mechanism for an optical system of the present invention is:

[0047] The mirror base is in a downward force state by the spring extrusion force or pulling force; the free end of the first adjusting screw, the free end of the second adjusting screw and the free end of the third adjusting screw are all arranged on a horizontal base surface. The first adjusting screw, the second adjusting screw and the third adjusting screw are all height-adjustable screws.

[0048] It should be noted that the X direction and the Y direction in this embodiment are two-dimensional rectangular coordinate systems established with the lower surface of the mirror base as the horizontal plane, and the Z direction in this embodiment is a three-dimensional rectangular coordinate system established along the vertical direction of the lower surface of the mirror base on the basis of the two-dimensional rectangular coordinate system.

[0049] The circular positioning hole on the mirror base is squeezed with the steel ball on the first adjusting screw to form a structure that limits the freedom in the X and Y directions. However, the first adjusting screw can be adjusted to cause displacement in the Z direction so that the circular positioning hole of the mirror base will only move in the Z direction. The first adjusting screw will be self-locking when subjected to a downward force, or it can be fixed in other ways when moved to a desired position, thereby achieving locking in the Z direction (height).

[0050] The V-shaped positioning hole on the mirror base is squeezed with the steel ball on the second adjusting screw to form a structure that limits the freedom in the X direction or the Y direction. However, the second adjusting screw can be adjusted to cause displacement in the Z direction, so that the circular positioning hole of the mirror base will only move in the Z direction and the X direction or the Y direction. The second adjusting screw will be self-locking when subjected to a downward force, or it can be fixed in other ways when moved to the desired position.

[0051] The flat boss on the mirror base is squeezed with the steel ball on the third adjusting screw to form a structure that is free in the three directions of X, Y and Z. The third adjusting screw can be adjusted to cause displacement in the Z direction, so that the circular positioning hole of the mirror base can move in the three directions of X, Y and Z. Since the third adjusting screw is subjected to downward force, it will be self-locking, or it can be fixed by other means when it moves to the desired position.

[0052] The three points form a surface, which allows the lens mount to stably "float" in the air. By adjusting the three adjustment screws, the offset in the Z direction can be achieved, and the lens mount can be tilted at any angle and the center can be offset, making the application of the camera set on the mounting base more flexible and multi-purpose, which can better meet customer needs.

[0053] In the specific application process, since the optical eccentricity of different optical systems is inconsistent, in order to achieve the best imaging effect on different optical systems, for example, the optical instrument or lens is first connected to the camera, and the imaging quality and imaging center are observed according to the image or other detection tools to see if they are in the ideal position. If not, the back focus distance, sensor tilt angle and center can be changed by adjusting the three adjustment screws to obtain the best imaging quality.

[0054] In summary, the present invention provides an adjustment mechanism for an optical system, by respectively setting a first adjustment component, a second adjustment component and a third adjustment component at any three angular positions of the four angular positions of the corresponding square on the lower surface of the lens holder; through the mutual cooperation of the first adjustment component, the second adjustment component and the third adjustment component, offsets occur in different directions. Since three points form a plane, changing the height of any point will cause the entire plane to tilt and change the center position, thereby achieving the effect of adjusting the center position and the tilt angle of the optical system, and then obtaining the best imaging quality.

[0055] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adjustment mechanism for an optical system, comprising a square and horizontally arranged mirror base, wherein a mounting seat for assembling an optical device is provided at the central position of the upper surface of the mirror base, characterized in that: The first adjustment component, the second adjustment component and the third adjustment component are respectively arranged at any three of the four corner positions of the square corresponding to the lower surface of the mirror base; The first adjustment component includes a circular positioning hole integrally formed on the lower surface of the mirror base and a first adjustment screw disposed at the circular positioning hole and matched with the circular positioning hole; The second adjustment assembly includes a V-shaped positioning hole integrally formed on the lower surface of the mirror holder and a second adjustment screw disposed at the V-shaped positioning hole and matched with the V-shaped positioning hole; The third adjustment component includes a plane boss integrally formed on the lower surface of the mirror base and a third adjustment screw disposed at the plane boss and matched with the plane boss.

2. The adjustment mechanism for an optical system according to claim 1, characterized in that: The first adjusting screw, the second adjusting screw and the third adjusting screw are all arranged perpendicularly to the lower surface of the mirror base.

3. The adjustment mechanism for an optical system according to claim 1, characterized in that: A force applying device for applying force in the direction of the mirror seat is arranged at the edge of the upper surface of the mirror seat.

4. The adjustment mechanism for an optical system according to claim 3, characterized in that: The first adjustment component, the second adjustment component and the third adjustment component are distributed in an isosceles right triangle, and the first adjustment component is located at the right angle of the isosceles right triangle. The number of the force-applying devices is two, and the two force-applying devices are respectively located between the first adjustment component and the second adjustment component and between the first adjustment component and the third adjustment component.

5. The adjustment mechanism for an optical system according to claim 4, characterized in that: The V-shaped positioning hole is a strip groove extending toward the circular positioning hole and having a V-shaped vertical cross section.

6. The adjustment mechanism for an optical system according to claim 5, characterized in that: The center point of the circular positioning hole is located at the axis where the top end of the V-shape corresponding to the strip groove is located.

7. The adjustment mechanism for an optical system according to claim 3, characterized in that: The force applying device is a compression spring, one end of which is fixedly connected to the edge of the upper surface of the mirror seat, and the other end of which is in contact with the supporting portion of the external device.

8. The adjustment mechanism for an optical system according to claim 1, characterized in that: A movable steel ball structure is embedded in one end of the first adjusting screw that cooperates with the circular positioning hole; a movable steel ball structure is embedded in one end of the second adjusting screw that cooperates with the V-shaped positioning hole; and a movable steel ball structure is embedded in one end of the third adjusting screw that cooperates with the planar boss.

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