CN115494599A

CN115494599A - Lens adjusting mechanism

Info

Publication number: CN115494599A
Application number: CN202110615382.9A
Authority: CN
Inventors: 宋鹏; 刘稚萍; 徐向宇; 刘广义; 江锐
Original assignee: Beijing RSlaser Opto Electronics Technology Co Ltd
Current assignee: Beijing RSlaser Opto Electronics Technology Co Ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-12-20

Abstract

A lens adjustment mechanism comprising a base plate; a mirror bracket adjusting seat arranged on the bottom plate; the spectacle frame is arranged on the spectacle frame adjusting seat; the first direction pushing assembly is arranged on the mirror bracket adjusting seat and used for pushing the mirror bracket to move back and forth on the mirror bracket adjusting seat along the first direction; a lens base arranged on the lens frame; the second-direction pushing assembly is arranged on the mirror bracket and used for pushing the mirror base to move back and forth relative to the mirror bracket along a second direction; the pushing bracket is fixedly arranged on the bottom plate; the third-direction pushing assembly is arranged on the pushing support and used for pushing the mirror bracket to move back and forth on the bottom plate along a third direction; a rotating shaft connecting the mirror bracket and the mirror base, wherein the mirror base can rotate around the rotating shaft relative to the mirror bracket, and the rotating shaft can be detached; the first direction, the second direction and the third direction form a three-axis rectangular coordinate system. The lens adjusting mechanism can realize fine adjustment of the lens base in a plurality of dimensionalities of up-down deflection in the first direction, the second direction and the third direction, is compact in structure, small in size, easy to operate and capable of being used in a light path with more difficulty in adjustment.

Description

Lens adjusting mechanism

Technical Field

The invention relates to the technical field of laser, in particular to a lens adjusting mechanism.

Background

The optical path adjustment is an important ring in the laser field, and the main function of the optical path adjustment is to adjust the lens according to the direction, the pitch and the angle of the optical path so that the optical path propagates in a preset direction.

The traditional spectacle frame can be realized only by installing the traditional spectacle frame on a multi-dimensional translation table and a lifting table to realize fine tuning movements of up and down, left and right, and front and back. And the traditional multidimensional translation table and lifting table have large volume and complex structure. And the traditional spectacle frame needs to realize the deflection adjustment of the lenses, and the operation is more complicated.

Disclosure of Invention

In view of this, it is necessary to provide a lens adjusting mechanism which has a compact structure, a small volume, a simple structure, and a simple operation for adjusting the deflection of the lens.

A lens adjusting mechanism comprises

A base plate;

the spectacle frame adjusting seat is arranged on the bottom plate;

the mirror bracket is arranged on the mirror bracket adjusting seat;

the first direction pushing assembly is arranged on the mirror bracket adjusting seat and used for pushing the mirror bracket to move back and forth on the mirror bracket adjusting seat along a first direction;

the lens base is arranged on the lens frame;

the second direction pushing assembly is arranged on the mirror frame and used for pushing the mirror base to move back and forth relative to the mirror frame along a second direction;

the pushing bracket is fixedly arranged on the bottom plate;

the third-direction pushing assembly is arranged on the pushing support and used for pushing the mirror frame to move back and forth on the bottom plate along a third direction;

a rotation shaft connecting the frame and the base, the base being rotatable about the rotation shaft relative to the frame, the rotation shaft being removable;

the first direction, the second direction and the third direction form a three-axis rectangular coordinate system.

In one embodiment, the axis of rotation is a pin.

In one embodiment, the first direction pushing assembly comprises a first fine adjustment jackscrew, a first magnet and a second magnet, the first fine adjustment jackscrew is in threaded connection with the mirror bracket adjusting seat, the first magnet is arranged on the mirror bracket adjusting seat, the second magnet is arranged on the mirror bracket, the first magnet and the second magnet are arranged in an mutually attracting mode, the first fine adjustment jackscrew rotates in the forward direction until the end face of the first fine adjustment jackscrew abuts against the mirror bracket, the first fine adjustment jackscrew rotates in the forward direction continuously to push the mirror bracket to move in the first direction, and when the first fine adjustment jackscrew rotates in the reverse direction, the second magnet drives the mirror bracket to move and reset under the attraction effect of the first magnet and the second magnet.

In one embodiment, the mirror bracket comprises a first arm, a connecting part and a second arm, wherein the first arm is arranged along a first direction, the second arm is arranged along a second direction, the connecting part is arranged along a third direction, and the first arm and the second arm are fixedly connected with the connecting part;

the mirror bracket adjusting seat comprises a bottom plate connecting plate and an adjusting fixing plate, and the bottom plate connecting plate is fixedly connected with the adjusting fixing plate;

the first fine tuning jackscrew is in threaded connection with the adjusting fixing plate, and the end face of the first fine tuning jackscrew is opposite to the connecting part;

the first support arm is connected with the side wall of the bottom plate connecting plate through a first locking screw, a first long strip hole is formed in the first support arm, the extending direction of the first long strip hole is parallel to the first direction, and one end of the first locking screw penetrates through the first long strip hole to connect the first support arm with the bottom plate connecting plate.

In one embodiment, the second direction pushing assembly comprises a second fine adjustment jackscrew, a third magnet and a fourth magnet, the second fine adjustment jackscrew is in threaded connection with the mirror base, the third magnet is arranged on the second support arm, the fourth magnet is arranged on the mirror base, the third magnet and the fourth magnet are arranged in an mutually attracting mode, the second fine adjustment jackscrew is rotated in the forward direction until the end face of the second fine adjustment jackscrew abuts against the mirror frame, the second fine adjustment jackscrew can be pushed to move along the second direction by continuing to rotate in the forward direction, and when the second fine adjustment jackscrew is rotated in the reverse direction, the fourth magnet drives the mirror base to move and reset under the attraction effect of the third magnet and the fourth magnet.

In one embodiment, the lens base comprises a lens setting piece, a mounting part and a top plate, the mounting part is fixedly connected with the lens setting piece, the top plate is fixedly connected with the mounting part, the mounting part is provided with a second elongated hole, and the extending direction of the second elongated hole is parallel to the second direction;

the mounting part is connected with the second support arm through a second locking screw, and one end of the second locking screw penetrates through the second strip hole to connect the mounting part with the second support arm;

the top plate is arranged at the end part of the second support arm, the second fine-tuning jackscrew is in threaded connection with the top plate, and the end surface of the second fine-tuning jackscrew is opposite to the end part of the second support arm.

In one embodiment, the connecting portion and the frame adjustment block are connected by a third locking screw.

In one embodiment, the lens setting member is provided with a lens mounting hole, and the lens is mounted at the position of the lens setting member provided with the lens mounting hole through a lens pressing ring.

In one embodiment, the third direction pushing assembly includes a third fine adjustment jackscrew, a fifth magnet and a sixth magnet, the third fine adjustment jackscrew is in threaded connection with the pushing support, the fifth magnet is arranged on the bottom plate, the sixth magnet is arranged on the mirror bracket adjusting seat, the fifth magnet and the sixth magnet are arranged in an mutually attracting manner, the third fine adjustment jackscrew is rotated in the forward direction until the end surface of the third fine adjustment jackscrew abuts against the mirror bracket, the third fine adjustment jackscrew is rotated in the forward direction continuously to push the mirror bracket to move in the third direction, and when the third fine adjustment jackscrew is rotated in the reverse direction, the sixth magnet drives the mirror bracket to move and reset under the attraction of the fifth magnet and the sixth magnet.

In one embodiment, the pushing bracket comprises a fixedly connected bottom fixing plate and an adjusting mounting plate, the bottom fixing plate is fixedly connected with the bottom plate, the third fine tuning jackscrew is in threaded connection with the adjusting mounting plate, and the end surface of the third fine tuning jackscrew is opposite to the mirror bracket;

the mirror holder adjustment seat still is equipped with the third rectangular hole, the extending direction in third rectangular hole is on a parallel with the third direction, the mirror holder adjustment seat with the bottom plate passes through fourth locking screw and connects, fourth locking screw's one end is passed third rectangular hole will the mirror holder adjustment seat with the bottom plate is connected.

According to the lens adjusting mechanism, the first direction pushing assembly can push the lens frame to move back and forth on the lens frame adjusting seat along the first direction, and the lens frame drives the lens seat to move back and forth along the first direction due to the fact that the lens seat is arranged on the lens frame. The second direction pushing assembly can push the lens base to move back and forth along a second direction relative to the lens frame. The third direction pushing assembly can push the mirror bracket to move back and forth on the bottom plate along the third direction, and the mirror bracket drives the mirror base to move back and forth along the third direction. Through setting up the rotation axis, the microscope base is around the rotation axis for the mirror holder is rotatable, simple structure, easy to operate. Therefore, the lens adjusting mechanism can realize fine adjustment of the lens base in a plurality of dimensions of the first direction, the second direction and the third direction as well as up-and-down deflection, has compact structure and small volume, and can adjust the lens base on a more complicated light path with higher adjusting difficulty. The application range is wider.

Drawings

Fig. 1 is a schematic structural view of a lens adjusting mechanism according to an embodiment.

FIG. 2 is an exploded view of the lens adjustment mechanism of FIG. 1;

fig. 3 is a schematic structural view of an embodiment of a frame;

FIG. 4 is a schematic structural diagram of a lens holder according to an embodiment;

FIG. 5 is a schematic view of a mirror base adjustment frame according to an embodiment;

FIG. 6 is a schematic diagram of one embodiment of a fine tuning screw driving two magnets to move relative to each other;

FIG. 7 is a schematic view of two magnets being reset according to one embodiment;

FIG. 8 is a schematic diagram of one embodiment of a pin urging rotation and return of two magnets.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The following detailed description of embodiments of the invention refers to the accompanying drawings.

Referring to fig. 1 and 2, one embodiment of the lens adjusting mechanism is characterized by comprising

A base plate 10;

a frame adjusting base 20 provided on the base plate 10;

a lens frame 30 provided on the lens frame adjustment base 20;

a first direction pushing assembly 40 disposed on the frame adjusting base 20, wherein the first direction pushing assembly 40 is used for pushing the frame 30 to move back and forth on the frame adjusting base 20 along a first direction;

a lens mount 50 provided on the lens frame 30;

a second direction pushing assembly 60 disposed on the frame 30, wherein the second direction pushing assembly 60 is used for pushing the lens holder 50 to move back and forth relative to the frame 30 along a second direction;

a push bracket 70 fixedly provided on the base plate 10;

a third direction pushing assembly 80 disposed on the pushing bracket 70, wherein the third direction pushing assembly 80 is used for pushing the mirror frame 30 to move back and forth on the base plate 10 along a third direction;

a rotation shaft 90 connecting the frame 30 and the base 50, the base 50 being rotatable relative to the frame 30 about the rotation shaft 90, the rotation shaft 90 being removable;

In the lens adjusting mechanism, the first direction pushing assembly 40 can push the lens frame 30 to move back and forth on the lens frame adjusting base 20 along the first direction, and since the lens base 50 is disposed on the lens frame 30, the lens frame 30 drives the lens base 50 to move back and forth along the first direction. The second direction push assembly 60 can push the lens mount 50 back and forth relative to the frame 30 in a second direction. The third direction pushing assembly 80 can push the frame 30 back and forth in a third direction on the base plate 10, and the frame 30 can move the base 50 back and forth in the third direction. By providing the rotation shaft 90, the lens holder 50 can be rotated about the rotation shaft 90 with respect to the lens frame 30, and the structure is simple and easy to operate. Therefore, the lens adjusting mechanism can realize fine adjustment of the lens base 50 in a plurality of dimensions of the first direction, the second direction, the third direction and the vertical deflection, has a compact structure and a small volume, and can adjust the lens base on a more complicated light path with higher adjusting difficulty. The application range is wider.

In one embodiment, the rotation axis 90 is a pin. The pin 90 is coaxial with the middle holes of the lens holder 50 and the lens frame 30. The base 50 is rotated about the pin by inserting the pin into the intermediate hole between the frame 30 and the base 50. By designing the rotation shaft 90 as a pin, the structure is simple.

In one embodiment, the first direction pushing assembly 40 includes a first fine adjustment jackscrew 42, a third magnet 64 and a fourth magnet 66, the first fine adjustment jackscrew 42 is in threaded connection with the frame adjustment base 20, the first magnet 44 is disposed on the frame adjustment base 20, the second magnet 46 is disposed on the frame 30, the first magnet 44 and the second magnet 46 are disposed in an attractive manner, the first fine adjustment jackscrew 42 is rotated in the forward direction until the end surface of the first fine adjustment jackscrew 42 abuts against the frame 30, the frame 30 can be pushed to move in the first direction by continuing to rotate the first fine adjustment jackscrew 42 in the forward direction, and when the first fine adjustment jackscrew 42 is rotated in the reverse direction, the second magnet 46 drives the frame 30 to move and reset under the attractive force of the first magnet 44 and the second magnet 46.

Specifically, the first magnet 44 can be mounted to the frame adjustment base 20 by interference fit or by screwing. The second magnet 46 can also be mounted to the frame 30 by interference fit insertion or by screw attachment.

The first magnet 44 and the second magnet 46 are arranged in an attractive manner, i.e. in the manner shown in fig. 6 and 7. As shown in fig. 6, when the first fine adjustment jackscrew 42 is rotated to move the frame 30 relative to the frame adjustment mount 20, the first magnet 44 and the second magnet 46 are misaligned, i.e., the first magnet 44 and the second magnet 46 are moved relative to each other. When the first fine adjustment jackscrew 42 rotates in the opposite direction, the second magnet 46 moves the mirror holder 30 in the opposite direction of the first direction, thereby resetting the mirror holder 30. That is, when the first fine adjustment screw 42 is screwed in with respect to the frame adjustment base 20, the frame 30 is pushed to move in the first direction, and when the first fine adjustment screw 42 is screwed out with respect to the frame adjustment base 20, the first magnet 44 and the second magnet 46 are attracted to each other to be reset, and as shown in fig. 7, the frame 30 is reset by the attraction force of the first magnet 44 and the second magnet 46.

Through designing first direction pushing assembly 40 as first fine setting jackscrew 42, adopt threaded connection to pass the mode and finely tune, simple structure.

In one embodiment, referring also to fig. 3, the frame 30 includes a first arm 32, a connecting portion 34, and a second arm 36. The first support arm 32 is arranged along a first direction, the second support arm 36 is arranged along a second direction, the connecting part 34 is arranged along a third direction, and the first support arm 32 and the second support arm 36 are fixedly connected with the connecting part 34.

In one embodiment, referring to fig. 5, the frame adjustment base 20 includes a base plate connecting plate 22 and an adjustment fixing plate 24, and the base plate connecting plate 22 is fixedly connected to the adjustment fixing plate 24.

The first fine adjustment jackscrew 42 is in threaded connection with the adjustment fixing plate 24, and the end face of the first fine adjustment jackscrew 42 is arranged opposite to the connecting part 34.

The first arm 32 is connected with the side wall of the bottom plate connecting plate 22 through a first locking screw 35, the first arm 32 is provided with a first long hole 38, the extending direction of the first long hole 38 is parallel to the first direction, and one end of the first locking screw 35 penetrates through the first long hole 38 to connect the first arm 32 with the bottom plate connecting plate 22.

The first locking screw 35 is passed through the first elongated hole 38 and locked in the screw hole at the side of the frame adjustment base 20. The first locking screw 35 can make the side of the frame 30 fit with the side of the frame adjusting base 20, and ensure that the axis of the lens is parallel to the upper surface of the base plate 10.

By forming the first elongated hole 38 in the first arm 32, the extending direction of the first elongated hole 38 is parallel to the first direction. When the first fine adjustment screw 42 is rotated, the frame 30 can be moved back and forth in a first direction relative to the frame adjustment base 20. At this time, since the first arm 32 and the side wall of the bottom plate connecting plate 22 are connected by the first locking screw 35, and the first locking screw 35 is disposed in the first elongated hole 38, the first elongated hole 38 can guide the mirror holder 30 to move back and forth in the first direction with respect to the mirror holder adjustment block 20.

In one embodiment, the number of first elongated holes 38 is two. The number of the first locking screws 35 is two. The two first locking screws 35 are respectively disposed in the two first elongated holes 38. By providing two first elongated holes 38, the coupling of the frame 30 to the frame adjustment base 20 is more stable and the guiding is more stable.

In one embodiment, the second direction pushing assembly 60 includes a second fine adjustment jackscrew 62, a third magnet 64 and a fourth magnet 66, the second fine adjustment jackscrew 62 is in threaded connection with the lens holder 50, the third magnet 64 is disposed on the second arm 36, the fourth magnet 66 is disposed on the lens holder 50, the third magnet 64 and the fourth magnet 66 are disposed in an attractive manner, the second fine adjustment jackscrew 62 is rotated in the forward direction until the end surface of the second fine adjustment jackscrew 62 abuts against the lens holder 30, the lens holder 50 can be pushed to move in the second direction by continuing to rotate the second fine adjustment jackscrew 62 in the forward direction, and when the second fine adjustment jackscrew 62 is rotated in the reverse direction, the fourth magnet 66 drives the lens holder 50 to move and reset under the attractive force of the third magnet 64 and the fourth magnet 66.

Specifically, the third magnet 64 may be mounted on the second arm 36 by interference fit or by screw fastening. The fourth magnet 66 can also be mounted to the mirror base 50 by interference fit or by screw fastening.

The third magnet 64 and the fourth magnet 66 are arranged to attract each other, i.e., arranged in the manner shown in fig. 6 and 7. When the second fine adjustment jackscrew 62 rotates to push the lens holder 50 to move, the third magnet 64 and the fourth magnet 66 are misaligned. When the second fine adjustment jackscrew 62 rotates in the opposite direction, the fourth magnet 66 drives the mirror base 50 to move in the opposite direction of the second direction, thereby driving the mirror base 50 to reset.

Through designing second direction pushing assembly 60 as second fine setting jackscrew 62, adopt threaded connection to pass the mode and finely tune, simple structure.

Referring also to fig. 4, the lens holder 50 includes a lens setting member 52, a mounting portion 54, and a top plate 56. The mounting portion 54 is fixedly attached to the lens setting member 52. The top plate 56 is fixedly connected to the mounting portion 54. The mounting portion 54 is formed with a second elongated hole 58, and the extending direction of the second elongated hole 58 is parallel to the second direction.

The mounting portion 54 and the second arm 36 are connected by a second locking screw 53, and one end of the second locking screw 53 passes through the second elongated hole 58 to connect the mounting portion 54 and the second arm 36.

The top plate 56 is arranged at the end part of the second support arm 36, the second fine adjustment jackscrew 62 is in threaded connection with the top plate 56, and the end surface of the second fine adjustment jackscrew 62 is opposite to the end part of the second support arm 36.

By forming the second elongated hole 58 in the mounting portion 54, the extending direction of the second elongated hole 58 is parallel to the second direction. The base 50 can be moved back and forth in a second direction relative to the frame 30 when the second fine adjustment screw 62 is rotated. At this time, since the mounting portion 54 and the second arm 36 are coupled by the second locking screw 53, and the second locking screw 53 is disposed in the second elongated hole 58, the second elongated hole 58 can guide the movement of the base 50 in the second direction relative to the frame 30.

In one embodiment, the number of second elongated apertures 58 is two. The number of the second locking screws 53 is two. The two second locking screws 53 are respectively disposed in the two second elongated holes 58. By providing two second elongated holes 58, the connection of the base 50 to the frame 30 is more stable, while guiding is more stable.

In one embodiment, the connecting portion 34 and the frame adjustment base 20 are connected by a third locking screw 37. When the frame 30 carries the base 50 to a proper position in the first direction, the third locking screw 37 can be used to fixedly connect the frame 30 and the frame adjustment base 20.

In one embodiment, the lens setting member 52 defines a lens mounting hole (not shown), and the lens 55 is mounted on the lens setting member 52 via a lens ring 57.

In one embodiment, the lens 55 may be a projection lens. It is understood that the lens 55 may be other lenses.

In one embodiment, a gasket 59 is also included. When the lens 55 is installed, the lens 55 is placed in the circular hole groove of the mirror base 50, the gasket 59 is pressed on the lens 55, and then the lens pressing ring 57 locks the lens 55 and the gasket 59 in the circular hole groove of the mirror base 50 in a threaded manner to form the mirror base assembly. At this time, the lens 55, the washer 59, the lens collar 57, and the circular hole of the lens holder 50 are in concentric positions.

In one embodiment, the third direction pushing assembly 80 comprises a third fine adjustment jackscrew 82, a fifth magnet 84 and a sixth magnet 86, the third fine adjustment jackscrew 82 is in threaded connection with the pushing support 70, the fifth magnet 84 is disposed on the bottom plate 10, the sixth magnet 86 is disposed on the frame adjustment base 20, the fifth magnet 84 and the sixth magnet 86 are disposed in an attractive manner, the third fine adjustment jackscrew 82 is rotated in the forward direction until the end surface of the third fine adjustment jackscrew 82 abuts against the frame 30, the frame 30 can be pushed to move in the third direction by continuing to rotate the third fine adjustment jackscrew 82 in the forward direction, and when the third fine adjustment jackscrew 82 is rotated in the reverse direction, the sixth magnet 86 drives the frame 30 to move and reset under the attractive force of the fifth magnet 84 and the sixth magnet 86.

Specifically, the fifth magnet 84 may be mounted on the base plate 10 by an interference fit insertion method or a screw fixing method. The sixth magnet 86 can also be attached to the frame adjustment base 20 by interference fit or by screwing.

The fifth magnet 84 and the sixth magnet 86 are arranged to attract each other, that is, arranged in the manner shown in fig. 6 and 7. When the third fine adjustment screw 82 is rotated to move the frame 30, the fifth magnet 84 and the sixth magnet 86 are misaligned. When the second fine adjustment jackscrew 62 rotates in the reverse direction, the sixth magnet 86 drives the mirror holder 30 to move in the reverse direction of the third direction, thereby resetting the mirror holder 30.

Through designing third direction pushing assembly 80 as third fine setting jackscrew 82, adopt threaded connection to pass the mode and finely tune, simple structure.

In one embodiment, referring to fig. 2, the pushing bracket 70 includes a bottom fixing plate 72 and an adjusting mounting plate 74 fixedly connected, and the bottom fixing plate 72 is fixedly connected to the base plate 10. The third fine adjustment jackscrew 82 is threadedly coupled to the adjustment mounting plate 74, and an end face of the third fine adjustment jackscrew 82 is disposed opposite the lens holder 30.

Referring to fig. 5, the frame adjustment base 20 is further provided with a third elongated hole 25, the extending direction of the third elongated hole 25 is parallel to the third direction, the frame adjustment base 20 and the bottom plate 10 are connected by a fourth locking screw 27, and one end of the fourth locking screw 27 passes through the third elongated hole 25 to connect the frame adjustment base 20 and the bottom plate 10.

The third elongated hole 25 is formed in the frame adjustment base 20, and the extending direction of the third elongated hole 25 is parallel to the third direction. When the third fine adjustment jackscrew 82 is rotated, the frame 30 can be moved back and forth in a third direction relative to the push bracket 70. At this time, since the frame adjustment base 20 and the base plate 10 are coupled by the fourth locking screw 27 and the fourth locking screw 27 is disposed in the third elongated hole 25, the third elongated hole 25 can guide the frame 30 to move back and forth in the third direction with respect to the push bracket 70.

In one embodiment, the number of the third elongated holes 25 is two. The number of the fourth locking screws 27 is two. Two fourth locking screws 27 are respectively arranged in the two third elongated holes 25. By providing the two third elongated holes 25, the coupling of the frame adjustment base 20 and the base plate 10 is more stable, and the guiding is more stable.

Specifically, the bottom fixing plate 72 is fixedly connected to the base plate 10 by a fifth locking screw 76. The fifth locking screw 76 is passed through two holes at the bottom of the push bracket 70 to fix it to the base plate 10.

The forward and reverse rotations of first fine adjustment jackscrew 42, second fine adjustment jackscrew 62, and third fine adjustment jackscrew 82 described herein are not intended to be specific directions, but are merely intended to indicate the opposite direction of the two rotations.

The adjusting method of the lens adjusting mechanism comprises the following steps:

when the deflection angle of the lens holder 50 needs to be adjusted, the lens holder 50 is rotated, and the lens holder 50 deflects by taking the pin shaft as a center. And the angle is deflected to a proper angle, and the second locking screw 53 is used for fixing and locking, so that the adjustment of the vertical deflection angle is completed. Meanwhile, referring to fig. 8, due to the third magnet 64 and the fourth magnet 66, the mirror base 50 can be automatically returned without external force under the action of the attractive force of the third magnet 64 and the fourth magnet 66.

When the up-and-down linear displacement of the mirror base 50 needs to be adjusted, the second fine adjustment jackscrew 62 is rotated clockwise, and when the second fine adjustment jackscrew 62 touches the top surface of the mirror bracket 30, a reaction force is generated to push the mirror base 50 to move upwards as a whole, and conversely, the mirror base moves downwards under the attraction of the third magnet 64 and the fourth magnet 66. And finishing the adjustment of the up-and-down linear displacement. During this process, which requires removal of the pin, the second elongated hole 58 of the mirror base 50 is guided.

The deflection and the up-and-down linear displacement of the mirror base 50 cannot be realized simultaneously.

When the left-right linear displacement of the spectacle frame 30 needs to be adjusted, the first fine adjustment jackscrew 42 is rotated clockwise, when the first fine adjustment jackscrew 42 touches the right side of the spectacle frame 30, a reaction force is generated to push the whole lens base 50 to move leftwards, and conversely, the whole lens base moves rightwards under the attraction of the first magnet 44 and the second magnet 46. And completing the adjustment of left and right linear displacement. In the process, the second elongated hole 38 on one side of the frame 30 is used for guiding.

When the front-back linear displacement of the mirror bracket 30 needs to be adjusted, the third fine adjustment jackscrew 82 is rotated clockwise, and when the third fine adjustment jackscrew 82 touches the front side surface of the mirror bracket 30, a reaction force is generated to push the mirror base 50 to move backwards as a whole, and conversely, the mirror base moves forwards under the attraction of the fifth magnet 84 and the sixth magnet 86. And completing the adjustment of front and rear linear displacement. In this process, the third elongated hole 25 of the frame adjustment base 20 is guided.

The traditional fine tuning mirror bracket can only be matched with the translation table and the lifting table for use. The lens adjusting mechanism can have the same fine adjustment function without a translation table and a lifting table, so that the adaptability and the economical efficiency are improved.

The lens adjusting mechanism is fine-tuned in a threaded connection pushing mode and is simple in structure.

The lens adjusting mechanism is simple in structure, small in size and short in light path structure or small-sized light path.

The lens adjusting mechanism is also suitable for other lens fine adjusting mechanisms.

The lens adjusting mechanism utilizes the magnet attraction effect to replace spring reset, is used for a compact optical structure, and saves space.

According to the lens adjusting mechanism, the magnet attraction effect is used for replacing spring resetting, the magnet has a positioning function, and a linear bidirectional resetting function can be realized, so that linear bidirectional adjustment and rotary bidirectional adjustment are realized.

The lens adjusting mechanism utilizes the magnet attraction effect to replace the spring reset function, and can also realize the bidirectional adjustment of the rotating mechanism.

The lens adjusting mechanism also utilizes the repulsive force effect of the magnet to replace the spring reset function, and can realize linear bidirectional adjustment and rotary bidirectional adjustment.

Above-mentioned lens adjustment mechanism utilizes magnet attraction effect to replace spring reset function and has following advantage: the spring can be fatigued due to the continuous use of the spring, so that the resetting is inaccurate, and the resetting accuracy of the magnet can still be kept after the magnet is reset for a long time. In addition, the magnet reset has the following advantages: in the resetting process, a space between two ends with the same magnetic pole can have a barrier which is not isolated from the magnetic field, such as other components, and the spring resetting cannot be realized.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A lens adjusting mechanism is characterized by comprising

A base plate (10);

a spectacle frame adjusting seat (20) arranged on the bottom plate (10);

a mirror bracket (30) arranged on the mirror bracket adjusting seat (20);

the first direction pushing assembly (40) is arranged on the mirror frame adjusting seat (20), and the first direction pushing assembly (40) is used for pushing the mirror frame (30) to move back and forth on the mirror frame adjusting seat (20) along a first direction;

a lens base (50) arranged on the lens frame (30);

a second direction pushing assembly (60) arranged on the mirror frame (30), wherein the second direction pushing assembly (60) is used for pushing the mirror base (50) to move back and forth relative to the mirror frame (30) along a second direction;

a pushing bracket (70) fixedly arranged on the bottom plate (10);

a third direction pushing assembly (80) arranged on the pushing bracket (70), wherein the third direction pushing assembly (80) is used for pushing the mirror bracket (30) to move back and forth on the bottom plate (10) along a third direction;

a rotation axis (90) connecting the frame (30) and the base (50), the base (50) being rotatable relative to the frame (30) about the rotation axis (90), the rotation axis (90) being detachable;

2. Lens adjustment mechanism according to claim 1, characterized in that the rotation axis (90) is a pin.

3. The lens adjustment mechanism of claim 1, wherein the first direction pushing assembly (40) comprises a first fine adjustment jack (42), a first magnet (44) and a second magnet (46), the first fine adjustment jack (42) and the frame adjustment base (20) are in threaded connection, the first magnet (44) is disposed on the frame adjustment base (20), the second magnet (46) is disposed on the frame (30), the first magnet (44) and the second magnet (46) are in attractive arrangement with each other, the first fine adjustment jack (42) is rotated in a forward direction until an end surface of the first fine adjustment jack (42) abuts against the frame (30), the frame (30) can be pushed to move in the first direction by continuing to rotate the first fine adjustment jack (42) in the forward direction, and the second magnet (46) drives the frame (30) to move to reset attractive force under the action of the first magnet (44) and the second magnet (46) when rotating the first fine adjustment jack (42) in the reverse direction.

4. The lens adjustment mechanism of claim 3, wherein said frame (30) includes a first arm (32), a connecting portion (34), and a second arm (36), said first arm (32) being disposed in a first orientation, said second arm (36) being disposed in a second orientation, said connecting portion (34) being disposed in a third orientation, said first arm (32) and said second arm (36) being fixedly connected to said connecting portion (34);

the mirror bracket adjusting seat (20) comprises a bottom plate connecting plate (22) and an adjusting fixing plate (24), and the bottom plate connecting plate (22) is fixedly connected with the adjusting fixing plate (24);

the first fine-tuning jackscrew (42) is in threaded connection with the adjusting fixing plate (24), and the end face of the first fine-tuning jackscrew (42) is opposite to the connecting part (34);

the first support arm (32) is connected with the side wall of the bottom plate connecting plate (22) through a first locking screw (35), the first support arm (32) is provided with a first long hole (38), the extending direction of the first long hole (38) is parallel to the first direction, and one end of the first locking screw (35) penetrates through the first long hole (38) to connect the first support arm (32) with the bottom plate connecting plate (22).

5. The lens adjustment mechanism according to claim 4, wherein the second direction pushing assembly (60) comprises a second fine adjustment jack (62), a third magnet (64) and a fourth magnet (66), the second fine adjustment jack (62) is in threaded connection with the lens base (50), the third magnet (64) is disposed on the second arm (36), the fourth magnet (66) is disposed on the lens base (50), the third magnet (64) and the fourth magnet (66) are arranged in an attractive manner, the second fine adjustment jack (62) is rotated in a forward direction until the end surface of the second fine adjustment jack (62) abuts against the lens frame (30), the lens base (50) can be pushed to move in a second direction by further rotating the second fine adjustment jack (62) in the forward direction, and the fourth magnet (66) drives the lens base (50) to move to reset under the attractive force of the third magnet (64) and the fourth magnet (66) when the second fine adjustment jack (62) is rotated in the reverse direction.

6. The lens adjusting mechanism according to claim 5, wherein the lens holder (50) comprises a lens setting member (52), a mounting portion (54) and a top plate (56), the mounting portion (54) is fixedly connected with the lens setting member (52), the top plate (56) is fixedly connected with the mounting portion (54), a second elongated hole (58) is formed in the mounting portion (54), and the extending direction of the second elongated hole (58) is parallel to the second direction;

the mounting part (54) is connected with the second support arm (36) through a second locking screw (53), and one end of the second locking screw (53) penetrates through the second long hole (58) to connect the mounting part (54) with the second support arm (36);

the top plate (56) is arranged at the end part of the second support arm (36), the second fine-tuning jackscrew (62) is in threaded connection with the top plate (56), and the end surface of the second fine-tuning jackscrew (62) is opposite to the end part of the second support arm (36).

7. The lens adjustment mechanism of claim 4, wherein the connecting portion (34) and the frame adjustment block (20) are connected by a third locking screw (37).

8. The lens adjusting mechanism according to claim 4, wherein the lens setting member (52) is provided with a lens mounting hole, and the lens (55) is mounted on the lens setting member (52) at a position where the lens mounting hole is provided through a lens pressing ring (57).

9. The lens adjustment mechanism of claim 1, wherein the third directional pushing assembly (80) comprises a third fine adjustment jackscrew (82), a fifth magnet (84) and a sixth magnet (86), the third fine adjustment jackscrew (82) and the pushing bracket (70) are in threaded connection, the fifth magnet (84) is disposed on the base plate (10), the sixth magnet (86) is disposed on the frame adjustment seat (20), the fifth magnet (84) and the sixth magnet (86) are arranged in an attractive manner, the third fine adjustment jackscrew (82) is rotated in a forward direction until an end surface of the third fine adjustment jackscrew (82) abuts against the frame (30), the frame (30) is moved in a third direction by further rotating the third fine adjustment jackscrew (82) in the forward direction, and the sixth magnet (86) drives the sixth magnet (86) to move the frame (30) to reset the frame (30) by the attractive force of the fifth magnet (84) and the sixth magnet (86) when the third fine adjustment jackscrew (82) is rotated in the reverse direction.

10. The lens adjustment mechanism of claim 9, wherein the push bracket (70) comprises a fixedly attached bottom attachment plate (72) and an adjustment mounting plate (74), the bottom attachment plate (72) is fixedly attached to the base plate (10), the third fine adjustment jackscrew (82) is threadedly attached to the adjustment mounting plate (74), and an end face of the third fine adjustment jackscrew (82) is disposed opposite the frame (30);

the mirror holder adjustment seat (20) still is equipped with third rectangular hole (25), the extending direction in third rectangular hole (25) is on a parallel with the third direction, mirror holder adjustment seat (20) with bottom plate (10) are connected through fourth locking screw (27), the one end of fourth locking screw (27) is passed third rectangular hole (25) will mirror holder adjustment seat (20) with bottom plate (10) are connected.