CN216901098U - Correcting mechanism and system for adjusting eccentricity of lens - Google Patents

Abstract

The application provides an eccentric aligning gear of regulation lens and system relates to optics technical field, can the high accuracy adjust the position of lens, makes the axial of a plurality of lenses concentric, has improved regulation precision and regulation efficiency. This aligning gear includes: a first adjustment mechanism, wherein the first adjustment mechanism comprises: the device comprises a driving device, a rotating wheel and a transmission rod; the driving device is in transmission connection with the rotating wheel so as to enable the rotating wheel to rotate in the circumferential direction, and an annular groove is formed in the radial wall surface of the rotating wheel and is an eccentric groove; one end of the transmission rod extends into the eccentric groove, and the other end of the transmission rod is in contact with the circumferential wall surface of the lens; the drive link is further configured to: when the rotating wheel rotates in the circumferential direction, the transmission rod moves linearly along the direction of the transmission rod perpendicular to the optical axis of the lens to push the lens to move so as to adjust the offset of the lens.

Description

Correcting mechanism and system for adjusting eccentricity of lens

Technical Field

The utility model relates to the technical field of optics, in particular to a correcting mechanism and a correcting system for adjusting eccentricity of a lens.

Background

With the development of society, lenses are applied to more and more places, for example, lenses on laser transmitters of laser televisions, projection lenses on projectors, and the like.

However, when the lenses in the lens are installed, it is necessary to ensure that the lenses are concentric, otherwise, the analysis of the projected image is poor, the projected image is irregular, and the image cannot be projected normally. Therefore, ensuring concentricity of the lenses in the lens becomes an important process when mounting the lenses.

At present, two methods are generally adopted to ensure the concentricity of the lenses: the first is the control of the machining precision of the metal lens cone and the machining precision of the lens profile, namely the concentricity of a plurality of lenses is ensured by completely depending on the machining precision of the lens cone and the lenses. However, since the plastic lens barrel is usually processed by injection molding, the processing precision of the plastic lens barrel cannot be ensured, and thus when the lens barrel is a plastic lens barrel, the processing precision of the lens barrel cannot be ensured; moreover, when the lens is a non-circular lens, the processing precision of the lens contour cannot be ensured. Secondly, the worker manually adjusts the positions of the lenses to make the lenses concentric, however, the adjustment precision of the worker usually cannot achieve the precision required by the concentricity of the lenses, so that the worker needs to adjust the lenses many times, a lot of time and energy are wasted, the production cost is high,

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a correcting mechanism and a correcting system for adjusting the eccentricity of a lens, which can adjust the position of the lens with high precision to enable the plurality of lenses to be concentric axially, and improve the adjusting precision and the adjusting efficiency.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in a first aspect, the present application provides a correction mechanism for adjusting decentration of a lens, comprising: a first adjustment mechanism, wherein the first adjustment mechanism comprises: the driving device, the rotating wheel and the transmission rod; the driving device is in transmission connection with the rotating wheel so as to enable the rotating wheel to rotate in the circumferential direction, and an annular groove is formed in the radial wall surface of the rotating wheel and is an eccentric ring; one end of the transmission rod extends into the annular groove, and the other end of the transmission rod is in contact with the circumferential wall surface of the lens; the drive link is further configured to: when the rotating wheel rotates in the circumferential direction, the transmission rod moves linearly along the direction of the transmission rod perpendicular to the optical axis of the lens to push the lens to move so as to adjust the offset of the lens.

The application provides an eccentric aligning gear of regulation lens includes: a first adjustment mechanism, wherein the correction mechanism comprises a first adjustment mechanism comprising: the driving device is used for providing power for the first adjusting mechanism, the rotating wheel is in transmission connection with the driving device, the driving device drives the rotating wheel to rotate in the circumferential direction, an annular groove is formed in the radial wall surface of the rotating wheel and is an eccentric ring, one end of the transmission rod extends into the annular groove, the other end of the transmission rod is in contact with the circumferential wall surface of the lens, and when the rotating wheel rotates in the circumferential direction, the transmission rod moves linearly in the direction perpendicular to the optical axis of the lens along the transmission rod to push the lens to move so as to adjust the offset of the lens. That is, when the rotating wheel rotates in the circumferential direction, the annular groove also rotates along the rotation center of the rotating wheel, and since the annular groove is an eccentric ring, a near center point (i.e., the position closest to the rotation center) and a far center point (i.e., the position farthest from the rotation center) exist in the annular groove, so that, during a period of time when the near center point of the annular groove and the far center point of the annular groove, where the transmission rod is in contact with the transmission rod, are in contact with each other, the transmission rod pushes the lens to move, thereby adjusting the offset of the lens.

Therefore, the maximum distance for the transmission rod to push the lens to move can be adjusted by adjusting the eccentricity difference (namely the distance from the circle center of the annular groove to the rotation center of the rotating wheel), so that when the required precision requirement of the concentricity of the lens is higher, a plurality of rotating wheels with different eccentricity differences can be used, and the concentricity precision of the lens is continuously improved until the plurality of lenses are concentric. Therefore, in the process of concentrically installing a plurality of lenses, the requirements on the machining precision of the lens cone and the lenses are lower, the noncircular lenses can be concentrically adjusted, the adjusting time is saved, and the adjusting precision and the adjusting efficiency are improved.

In some embodiments, the transmission rod of the first adjusting mechanism is horizontally arranged, and when the rotating wheel rotates in the circumferential direction, the transmission rod of the first adjusting mechanism moves linearly in the horizontal direction to push the lens to move in the horizontal direction so as to adjust the horizontal offset of the lens; the correction mechanism further includes: a second adjustment mechanism; the transmission rod of the second adjusting mechanism is vertically arranged, and when the rotating wheel of the second adjusting mechanism rotates in the circumferential direction, the transmission rod of the second adjusting mechanism moves linearly along the vertical direction to push the lens to move along the vertical direction so as to adjust the vertical offset of the lens.

In some embodiments, the first adjustment mechanism is in horizontal contact with a first end of the lens circumferential wall surface; the correction mechanism for adjusting the eccentricity of the lens further comprises: the telescopic rod is in contact with the second end of the circumferential wall surface of the lens in the horizontal direction, and the first end of the circumferential wall surface of the lens is opposite to the second end of the circumferential wall surface of the lens; the telescoping rod is further configured to: when the transmission rod moves to the first direction along the horizontal direction, the transmission rod pushes the lens to move to the first direction so as to push the telescopic rod to move to the first direction; when the transmission rod moves to the second direction along the horizontal direction, the telescopic rod pushes the lens to move to the second direction; the first direction is the direction of the lens moving towards the telescopic rod, and the second direction is the direction of the lens moving towards the transmission rod.

In some embodiments, the drive to wheel ratio is less than 1.

In some embodiments, the driving device comprises: a stepping motor; the correction mechanism further includes: the shaft hole of the first gear is connected with the stepping motor; the second gear and the rotating wheel are coaxially arranged, and when the rotating shaft of the stepping motor rotates, the second gear is driven to rotate, so that the rotating wheel rotates in the circumferential direction.

In some embodiments, the calibration mechanism further comprises: the driving device is fixed on the base; one end of the guide plate is fixedly connected with the base, a through hole is formed in the guide plate, and one end of the transmission rod is in contact with the circumferential wall surface of the lens through the through hole.

In some embodiments, the calibration mechanism further comprises: the lens holder comprises a base, wherein an accommodating cavity is formed in the base and is used for accommodating a lens; the axial direction of the transmission rod is perpendicular to the axial direction of the lens.

In a second aspect, the present application provides a correction system for adjusting decentration of a lens, the correction system comprising: a lens barrel and the correction mechanism for adjusting decentering of a lens described in the first aspect or any one of the embodiments above, the lens barrel comprising: the lens barrel comprises a lens barrel body and a spring pressing sheet, wherein a mounting groove is formed in the end portion of the lens barrel body and used for mounting a lens, a gap exists between the lens and the circumferential wall surface of the mounting groove, and the spring pressing sheet is arranged at the end portion of the lens barrel body and elastically supports the lens so that the lens is perpendicular to the axial direction of the lens barrel body.

In some embodiments, the circumferential wall surface of the lens is provided with an adjusting surface, the adjusting surface is tangential to the circumference of the lens, and the adjusting surface is used for contacting with the transmission rod.

In some embodiments, the lens barrel is provided with a through hole, the through hole is located at the connection position of the through hole and the mounting groove, and the transmission rod penetrates through the through hole and contacts with the circumferential wall surface of the lens.

Drawings

Fig. 1 is a schematic structural diagram of a plurality of lens offsets of a lens barrel according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a correcting mechanism for adjusting eccentricity of a lens according to an embodiment of the present disclosure;

FIG. 3 is a front view of a rotor according to an embodiment of the present disclosure;

FIG. 4 is a second schematic structural diagram of a correcting mechanism for adjusting the eccentricity of a lens according to an embodiment of the present invention;

fig. 5 is a third schematic structural diagram of a correcting mechanism for adjusting the eccentricity of a lens according to an embodiment of the present application;

FIG. 6 is a fourth schematic structural view of a correcting mechanism for adjusting the eccentricity of a lens according to an embodiment of the present invention;

FIG. 7 is a fifth schematic view illustrating a correcting mechanism for adjusting the eccentricity of a lens according to an embodiment of the present invention;

FIG. 8 is a sixth schematic view illustrating a correcting mechanism for adjusting the eccentricity of a lens according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a correction system for adjusting decentration of a lens according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a lens barrel according to an embodiment of the present disclosure;

fig. 11 is a second schematic view illustrating a structure of a lens barrel according to a second embodiment of the present disclosure;

FIG. 12 is a schematic view of the contact between the end of the transmission rod and the adjustment surface according to the embodiment of the present application;

fig. 13 is a third schematic view illustrating a lens barrel according to a third embodiment of the present disclosure.

Description of reference numerals:

100-a correction mechanism; 200-a lens; 201-lens barrel; 2010-mounting grooves; 2011-through holes; 2012-dispensing holes; 202-spring pressing sheet; 203-adjusting surface; 300-a lens; 400-a correction system; 10-a first adjustment mechanism; 11-a drive device; 12-a runner; 121-annular groove; 13-a transmission rod; 20-a second adjustment mechanism; 30-a telescopic rod; 40-a first gear; 50-a second gear; 60-a base; 70-a guide plate; 71-a through hole; 80-a base; 81-the receiving chamber.

Detailed Description

Technical solutions in some embodiments of the present application will be clearly and completely described below with reference to the drawings in some embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

With the development of the times, the lens is applied to more and more places. However, when the lenses in the lens are installed, it is necessary to ensure that a plurality of lenses are concentric, otherwise, the analysis of the projected picture is poor, the projected picture is irregular, and the picture cannot be projected normally. Fig. 1 shows a schematic structural diagram of a plurality of lens offsets of a lens barrel provided in an embodiment of the present application, where the lens a and the lens B are not concentric as shown in fig. 1. Fig. 2 shows a schematic structural diagram of a correcting mechanism for adjusting lens eccentricity, which can adjust a position of a lens with high precision so that the lens is concentric with an axial direction of a lens barrel, and improves adjustment precision and adjustment efficiency.

In a first aspect, as shown in fig. 2, an embodiment of the present application provides a correction mechanism for adjusting lens decentration, where the correction mechanism 100 for adjusting lens decentration includes: a first adjustment mechanism 10, wherein the first adjustment mechanism 10 comprises: a drive means 11, a wheel 12 and a transmission rod 13.

The drive means 11 may power the first adjustment mechanism 10. Alternatively, the driving device 11 may be an electric driving device, such as a stepping motor, a servo motor, or the like. Alternatively, the driving device 11 may also be a hydraulic driving device, a pneumatic driving device, and the like, which is not limited in this embodiment of the application.

In addition, the driving device 11 is in transmission connection with the rotating wheel 12, and alternatively, the transmission connection may be a gear transmission, a belt transmission, or a chain transmission, and the embodiment of the present application is not limited herein. The driving device 11 is in transmission connection with the rotating wheel 12, so that when the driving device 11 rotates, the rotating wheel 12 can be driven to rotate circumferentially.

Moreover, fig. 3 illustrates a front view of the rotating wheel provided in the embodiment of the present application, wherein an annular groove 121 is provided on a radial wall surface of the rotating wheel 12, and the annular groove 121 is an eccentric ring; the eccentric ring means that the center of the annular groove 121 is not concentric with the center of rotation of the rotating wheel 12, and the center of the annular groove 121 is offset from the center of rotation of the rotating wheel 12.

In addition, one end of the transmission rod 13 extends into the annular groove 121, and the other end of the transmission rod 13 contacts with the circumferential wall surface of the lens 200; so that when the runner 12 rotates circumferentially, the transmission rod 13 moves linearly along the transmission rod 13 perpendicular to the optical axis of the lens 200 to push the lens 200 to move, thereby adjusting the offset of the lens 200. When the wheel 12 rotates circumferentially, the annular groove 121 rotates, so that one end of the transmission rod 13 can slide in the annular groove 121, i.e. the contact point of the transmission rod 13 with the annular groove 121 changes constantly,

since the annular groove 121 is an eccentric ring, there are a proximal point (i.e., the closest point from the rotation center) and a distal point (i.e., the farthest point from the rotation center) in the annular groove 121, so that when the transmission rod 13 inserted into the annular groove 121 moves from the proximal point to the distal point, the transmission rod 13 pushes the lens 200 to move, thereby adjusting the offset of the lens 200.

It will be appreciated that, in order to ensure that the transmission rod 13 can move linearly along the transmission rod 13 perpendicular to the optical axis of the lens 200, the proximal point and the distal point of the annular groove 121 need to be located on both sides of the rotation center of the rotating wheel 12. This ensures that the drive rod 13 can move linearly in the axial direction.

In addition, the other end of the transmission rod 13 can be in surface contact with the circumferential wall surface of the lens 200, so that when the transmission rod 13 pushes the lens 200 to move, the lens 200 is prevented from being unevenly stressed, and the lens 200 is prevented from deviating to other directions, so that the lens 200 cannot be adjusted to be concentric with other lenses 200.

The application provides a correction mechanism 100 for adjusting eccentricity of a lens, comprising: a first adjustment mechanism 10, wherein the correction mechanism 100 comprises the first adjustment mechanism 10, the first adjustment mechanism 10 comprising: the driving device 11 is used for providing power for the first adjusting mechanism 10, the rotating wheel 12 is in transmission connection with the driving device 11, so that the driving device 11 drives the rotating wheel 12 to rotate circumferentially, an annular groove 121 is formed in a radial wall surface of the rotating wheel 12, the annular groove 121 is an eccentric ring, one end of the transmission rod 13 extends into the annular groove 121, the other end of the transmission rod 13 is in contact with a circumferential wall surface of the lens, and when the rotating wheel 12 rotates circumferentially, the transmission rod 13 moves linearly along the direction of the transmission rod 13 perpendicular to the optical axis of the lens 200 to push the lens 200 to move, so as to adjust the offset of the lens 200. That is, since the annular groove 121 is an eccentric ring, so that a proximal point (i.e., a position closest to the rotation center) and a distal point (i.e., a position farthest from the rotation center) exist in the annular groove 121, when the rotor 12 rotates in the circumferential direction, the annular groove 121 also rotates along the rotation center of the rotor 12, and since one end of the transmission rod protrudes into the annular groove 121, a contact point of the transmission rod 13 with the annular groove 121 can be from the proximal point to the distal point or from the distal point to the proximal point. When the contact point between the transmission rod 13 and the annular groove 121 changes, the circumferential wall surface in the annular groove 121 can push the transmission rod 13 to move linearly along the transmission rod 13 perpendicular to the optical axis of the lens 200. That is, during the period of time when the proximal point of the annular groove 121 is in contact with the distal point of the annular groove 121, where the transmission rod 13 is in contact with the transmission rod 13, the circumferential wall surface in the annular groove 121 pushes the transmission rod 13 to move linearly along the direction from the rotating wheel 12 to the lens 200, so that the transmission rod 13 pushes the lens 200 to move, thereby adjusting the offset of the lens 200; when the far center point of the annular groove 121 is in contact with the near center point of the driving rod 13, which is in contact with the driving rod 13, the circumferential wall surface in the annular groove 121 pushes the driving rod 13 to move linearly along the direction from the lens 200 to the rotating wheel 12, so that the driving rod 13 is reset, and the lens 200 can be adjusted conveniently next time.

In this way, the maximum distance that the transmission rod 13 pushes the lens 200 to move can be changed by adjusting the eccentricity difference (i.e. the distance from the center of the circular groove 121 to the center of rotation of the rotating wheel 12), so that when the required accuracy requirement for the concentricity of the lens 200 is high, a plurality of rotating wheels 12 with different eccentricity differences can be used, thereby continuously improving the accuracy of the concentricity of the lens 200 until a plurality of lenses 200 are concentric. Therefore, in the process of concentrically installing a plurality of lenses 200, the requirements on the processing precision of the lens barrel and the lenses 200 are lower, the non-circular lenses 200 can be concentrically adjusted, the adjusting time is saved, and the adjusting precision and the adjusting efficiency are improved.

Fig. 4 shows a schematic structural diagram of the correction mechanism provided in the embodiment of the present application, and in some embodiments, as shown in fig. 4, the transmission rod 13 of the first adjustment mechanism 10 is horizontally disposed, so that when the rotating wheel 12 rotates circumferentially, the transmission rod 13 of the first adjustment mechanism 10 moves linearly in a horizontal direction (i.e., in the X-axis direction in fig. 4), pushing the lens 200 to move in the horizontal direction, so as to adjust the horizontal offset of the lens 200. As shown in fig. 4, the calibration mechanism 100 further includes: the second adjusting mechanism 20, it can be understood that the structure of the second adjusting mechanism 20 is the same as that of the first adjusting mechanism 10, and the structure of the second adjusting mechanism 20 is not described in detail herein, and reference may be made to the structure of the first adjusting mechanism 10 described above.

Wherein, the transmission rod 13 of the second adjusting mechanism 20 is vertically disposed, and when the rotating wheel 12 of the second adjusting mechanism 20 rotates circumferentially, the transmission rod 13 of the second adjusting mechanism 20 makes a linear motion along the vertical direction, pushing the lens 200 to move along the vertical direction (i.e. the Y-axis direction in fig. 4), so as to adjust the vertical offset of the lens 200. In this way, the horizontal offset of the lens 200 is adjusted by the first adjusting mechanism, and the vertical offset of the lens 200 is adjusted by the second adjusting mechanism 20, so that the lens 200 can be adjusted to be concentric, and the projection effect is improved.

It can be understood that, when the lens 200 is shifted to the side far away from the first adjusting mechanism 10, since the first adjusting mechanism 10 pushes the lens 200 away from the first adjusting mechanism 10 during adjustment, the position of the lens 200 cannot be adjusted by the first adjusting mechanism 10, and the position of the first adjusting mechanism 10 needs to be adjusted, for example, the first adjusting mechanism 10 is moved to the other side of the lens 200, which will certainly take a lot of time and effort, and reduce the efficiency of installing the lens 200. To solve this problem, fig. 5 illustrates a structural schematic diagram of a correction mechanism provided in an embodiment of the present application, and in some embodiments, as shown in fig. 5, the first adjustment mechanism 10 is in contact with a first end of the circumferential wall surface of the lens 200 in the horizontal direction; the correcting mechanism 100 for adjusting the eccentricity of the lens 200 further comprises a telescopic rod 30, wherein the telescopic rod 30 is in contact with a second end of the circumferential wall surface of the lens 200 in the horizontal direction, the first end of the circumferential wall surface of the lens 200 is opposite to the second end of the circumferential wall surface of the lens 200, i.e. the telescopic rod 30 and the transmission rod 13 of the first adjusting mechanism 10 are respectively arranged on two opposite side wall surfaces of the lens 200 in the horizontal direction.

Wherein, in some embodiments, the telescopic rod 30 may be elastically supported by the elastic restoring member. When the transmission rod 13 moves in a first direction along the horizontal direction, the transmission rod 13 pushes the lens 200 to move in the first direction, the telescopic rod 30 receives the pushing force from the lens 200, and the elastic restoring member is compressed by the force, wherein the first direction is the direction in which the lens 200 moves towards the telescopic rod 30, i.e. the direction indicated by the arrow of the X axis in fig. 4. When the transmission rod 13 extending into the groove moves from the far center point to the near center point, and the transmission rod 13 moves in the second direction along the horizontal direction, the reset force of the elastic reset member pushes the telescopic rod 30 to move in the second direction, so that the lens 200 moves in the second direction, which is the direction in which the lens 200 moves towards the transmission rod 13, i.e. the direction opposite to the direction indicated by the arrow X in fig. 4. So, when the lens to keeping away from one side skew of first adjustment mechanism 10, can promote through this telescopic link 30, make this lens 200 remove to the second direction to also can adjust the horizontal skew of lens 200, facilitate the use has improved the efficiency of adjusting lens 200 concentricity, thereby can improve the efficiency of production camera lens, reduction in production cost.

In other embodiments, the retractable rod 30 can also be provided with a restoring force by a pneumatic auxiliary element, wherein the restoring force is smaller than the pushing force of the transmission rod 13 of the first adjusting mechanism, so that the transmission rod 13 of the first adjusting mechanism 10 can push the retractable rod 30 to move the retractable rod 30 in the first direction.

Similarly, in other embodiments, the second adjusting mechanism 20 is vertically contacted with one end of the circumferential wall surface of the lens 200, and the telescopic rod 30 is vertically contacted with the other end of the circumferential wall surface of the lens 200, that is, the telescopic rod 30 and the transmission rod 13 of the second adjusting mechanism 20 are respectively arranged on two opposite side wall surfaces of the lens 200 in the vertical direction, and the telescopic rod 30 can also be elastically supported by the elastic restoring member. When the transmission rod 13 moves in the vertical direction, the transmission rod 13 of the second adjusting mechanism 20 pushes the lens 200 to move upwards, the telescopic rod 30 receives the pushing force transmitted by the lens 200, and the elastic resetting piece is compressed under the force; when the transmission rod 13 extending into the groove moves from the far center point to the near center point, the transmission rod 13 moves downwards along the horizontal direction, and the reset force of the elastic reset piece pushes the telescopic rod 30 to move downwards.

Thus, the first adjustment mechanism 10, the second adjustment mechanism 20, the horizontally extendable rod 30, and the vertically extendable rod 30 are wound around the lens 200 in a cross shape. Therefore, when the transmission rod 13 of the first adjustment mechanism 10 pushes the lens 200 to move horizontally, the second adjustment mechanism 20 and the telescopic rod 30 in the vertical direction can limit the movement of the lens 200, i.e., limit the degree of freedom of the lens 200 in the vertical direction, and when the transmission rod 13 of the first adjustment mechanism 10 pushes the lens 200 to move horizontally, the lens 200 is equivalently subjected to the reset force of the telescopic rod 30 and the pushing force of the transmission rod 13 of the first adjustment mechanism 10, so that the lens 200 can be fixed between the telescopic rod 30 and the transmission rod 13 of the first adjustment mechanism 10, and the lens 200 is prevented from shifting in the horizontal movement process. Similarly, when the transmission rod 13 of the second adjustment mechanism 20 pushes the lens 200 to move vertically, the first adjustment mechanism 10 and the horizontal telescopic rod 30 can limit the movement of the lens 200, i.e. limit the degree of freedom of the lens 200 in the horizontal direction, and when the transmission rod 13 of the second adjustment mechanism 20 pushes the lens 200 to move vertically, the lens 200 is equivalently subjected to the restoring force of the telescopic rod 30 and the pushing force of the transmission rod 13 of the second adjustment mechanism 20, so that the lens 200 can be fixed between the telescopic rod 30 and the transmission rod 13 of the second adjustment mechanism 20, and the lens 200 is prevented from shifting in the vertical movement process.

In order to improve the adjustment accuracy, in some embodiments, the transmission ratio of the drive 11 and the wheel 12 is less than 1, i.e. the deceleration of the mechanism is achieved by the drive 11 transmitting with the wheel 12, i.e. the drive 11 rotates one revolution and the wheel 12 rotates less than one revolution. In this way, when the transmission ratio of the driving means 11 and the runner 12 is less than 1, so that when the driving means 11 rotates a plurality of turns, the runner 12 rotates one turn, the transmission rod 13 of the first adjusting mechanism 10 reciprocates in the horizontal direction for one cycle. So, can make things convenient for the workman to control so that stop motor operation, make lens 200 stop at the concentric position to can improve the regulation precision of lens 200, make when the skew of adjusting lens 200, can high accuracy adjust.

Fig. 6 illustrates a schematic structural diagram of a calibration mechanism provided in an embodiment of the present application, and in some embodiments, as shown in fig. 6, the calibration mechanism 100 further includes: a first gear 40 and a second gear 50, the drive device 11 comprising: and the shaft hole of the first gear 40 is connected with the stepping motor, the second gear 50 is coaxially arranged with the rotating wheel 12, and when the rotating shaft of the stepping motor rotates, the second gear 50 is driven to rotate, so that the rotating wheel 12 rotates in the circumferential direction. Thus, when the rotating shaft of the stepping motor rotates, the gear drives the rotating wheel 12 to rotate, so as to drive the transmission rod 13 to linearly move along the transmission rod 13 perpendicular to the optical axis direction of the lens 200, so as to adjust the offset of the lens 200.

Alternatively, the second gear 50 may be an internal gear, the second gear 50 and the first gear 40 mesh with each other by internal and external teeth, the contact stress between the internal gears is small, the wear of the gears is small, and therefore, the first gear 40 and the second gear 50 have a long service life.

Optionally, the second gear 50 may also be an external gear, and the second gear 50 and the first gear 40 are externally engaged through the external gear, which has low part processing difficulty, and thus, is cheap and low in cost.

In addition, in some embodiments, the second gear 50 may be integrated with the wheel 12, that is, the second gear 50 is disposed on the wheel 12, so that the connection strength between the second gear 50 and the wheel 12 is high, and the second gear 50 does not need to be connected and fixed through a connecting member, which reduces the cost.

In other embodiments, the second gear 50 is connected to the wheel 12, and optionally, the second gear 50 can be fixedly connected to the wheel 12, for example, by welding, riveting, etc. Therefore, the connection strength of the second gear 50 and the rotating wheel 12 is ensured, the second gear 50 and the rotating wheel 12 can be separately transported in the transportation process, and the assembly is carried out when the second gear and the rotating wheel reach an assembly factory, so that the transportation space is reduced, and the transportation cost is saved.

Optionally, the second gear 50 can be detachably connected to the wheel 12, for example, the detachable connection can be a screw connection, a pin connection, a hook connection, etc. Therefore, the space occupied by the second gear 50 and the rotating wheel 12 during transportation can be reduced, the transportation cost is saved, and the second gear 50 can be directly replaced after the second gear 50 is worn, so that the maintenance cost is reduced.

Fig. 7 illustrates a structural schematic diagram of an alignment mechanism provided in an embodiment of the present application, and in some embodiments, as shown in fig. 7, the alignment mechanism 100 further includes a base 60, the driving device 11 is fixed on the base 60, an L-shaped support rod (not shown in fig. 7) may further extend from the base 60, one end of the support rod is fixedly connected with the base 60, the other end of the support rod is slidably connected with a shaft hole of the rotating wheel 12, the rotating wheel 12 is slidable along the axial direction of the support rod, and the support rod is used for supporting the rotating wheel 12.

In order to make the transmission rod 13 move linearly along the transmission rod 13 perpendicular to the optical axis of the lens 200 and avoid the transmission rod 13 moving to other directions, in some embodiments, as shown in fig. 7, the calibration mechanism 100 further includes: a guide plate 70, wherein one end of the guide plate 70 is fixedly connected with the base 60, and a through hole 71 is provided on the guide plate 70, one end of the transmission rod 13 penetrates through the through hole 71 to contact with the circumferential wall surface of the lens 200, and the through hole 71 is just used for passing through the transmission rod 13. Thus, when the runner 12 rotates in the circumferential direction, a certain friction force exists between the wall surface of the annular groove 121 of the runner 12 and the transmission rod 13, so that one end of the transmission rod 13 and the annular groove 121 are driven to rotate together, however, since the transmission rod 13 penetrates through the through hole 71 of the guide plate, the inner wall surface of the through hole 71 prevents one end of the transmission rod 13 and the annular groove 121 from rotating together, so that the transmission rod 13 moves linearly along the direction of the transmission rod 13 perpendicular to the optical axis of the lens 200, and the transmission rod 13 is prevented from moving in other directions.

In some embodiments, the guide plate is disposed close to the wheel 12, i.e., the through hole 71 is close to the wheel 12, so that the through hole 71 can prevent one end of the transmission rod 13 from rotating together with the annular groove 121 at the source, and the transmission rod 13 is ensured to be perpendicular to the optical axis direction of the lens 200 along the transmission rod 13.

In order to facilitate the driving rod 13 to push the lens 200 on the lens, fig. 8 illustrates a structural schematic diagram of a calibration mechanism provided in an embodiment of the present application, and in some embodiments, as shown in fig. 8, the calibration mechanism 100 further includes: base 80, seted up on this base 80 and held the chamber 81, hold the chamber 81 and be used for holding the camera lens. In this way, the driving rod 13 is convenient to push the lens 200 on the lens to move.

In some embodiments, the axial direction of the transmission rod 13 is perpendicular to the axial direction of the lens. Thus, when the circumferential wall surface of the rotor 12 has a connection plane with the transmission rod 13, the end of the transmission rod 13 is ensured to contact the circumferential wall surface of the rotor 12, thereby avoiding the deviation when the lens 200 moves due to the thrust of the transmission rod 13.

In a second aspect, an embodiment of the present application further provides a correction system for adjusting lens decentration, fig. 9 is a schematic structural diagram of the correction system for adjusting lens decentration provided by the embodiment of the present application, as shown in fig. 9, the correction system 400 includes: a correction mechanism 100 for adjusting eccentricity of a lens and a lens 300,

the calibration mechanism 100 is the calibration mechanism 100 described in the first aspect, and details are not repeated herein, and reference may be made to the description of the first aspect.

In addition, fig. 10 shows a schematic structural diagram of a lens provided in an embodiment of the present application; as shown in fig. 10, the lens barrel 300 includes a lens barrel 201, a mounting groove 2010 is opened at an end of the lens barrel 201, the mounting groove 2010 is used for mounting the lens 200, and a gap exists between the lens 200 and a circumferential wall surface of the mounting groove 2010, the gap is used for facilitating the driving rod 13 of the correcting mechanism 100 to push the lens 200 to move so as to make the plurality of lenses 200 concentric. The lens 300 further includes: a spring pressing piece 202, the spring pressing piece 202 is arranged at the end of the lens barrel 201 and elastically supports the lens 200, so that the lens 200 is perpendicular to the axial direction of the lens barrel 201. The spring pressing plate 202 is used for fixing the lens 200 and preventing the lens 200 from moving along the axial direction of the lens barrel 201. Since the lens 200 is elastically supported by the spring plate 202, when the driving rod 13 pushes the lens 200 to move, the lens 200 can also move in the thrust direction of the driving rod 13.

Fig. 11 illustrates a structural schematic diagram of a lens barrel provided in an embodiment of the present application, and in some embodiments, as shown in fig. 11, a circumferential wall surface of the lens barrel 300 is provided with an adjusting surface 203, the adjusting surface is configured to contact with a transmission rod, and the adjusting surface 203 is tangential to a circumferential direction of the lens 200. So that the end of the transmission rod 13 is in surface contact when contacting the adjustment surface 203, thereby avoiding the lens 200 from being deviated by the force of the transmission rod 13, for example, fig. 12 is a schematic structural view of the transmission rod end contacting the adjustment surface according to the embodiment of the present application.

As shown in fig. 12, in some embodiments, the lens barrel 201 has a through hole 2011, the through hole 2011 is located at a connection position of the lens 200 and the mounting groove 2010, and the transmission rod 13 penetrates through the through hole 2011 to contact with a circumferential wall surface of the lens. In this way, the transmission rod 13 can penetrate through the lens barrel 201 to act on the lens 200, so that the transmission rod 13 can push the lens 200 to move conveniently.

Fig. 13 illustrates a schematic structural diagram of a lens provided in an embodiment of the present application, and in some embodiments, as shown in fig. 13, a dispensing hole 2012 is formed in the lens barrel 201, and the dispensing hole 2012 is also located at a connection position between the lens 200 and the mounting groove 2010. That is, after the lens 200 is adjusted, glue can be injected into the dispensing hole 2012 to fix the lens 200 and the lens barrel 201, so as to prevent the lens 200 from shifting.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A correction mechanism for adjusting decentration of a lens for adjusting a position of the lens, the correction mechanism comprising: a first adjustment mechanism, the first adjustment mechanism comprising:

a drive device;

the driving device is in transmission connection with the rotating wheel so as to enable the rotating wheel to rotate in the circumferential direction, an annular groove is formed in the radial wall surface of the rotating wheel, and the annular groove is an eccentric ring;

one end of the transmission rod extends into the annular groove, and the other end of the transmission rod is in contact with the circumferential wall surface of the lens; the drive link is further configured to: when the rotating wheel rotates in the circumferential direction, the transmission rod moves linearly along the direction perpendicular to the optical axis of the lens to push the lens to move so as to adjust the offset of the lens.

2. The correction mechanism for adjusting eccentricity of a lens according to claim 1,

the transmission rod of the first adjusting mechanism is horizontally arranged, and when the rotating wheel rotates in the circumferential direction, the transmission rod of the first adjusting mechanism moves linearly along the horizontal direction to push the lens to move along the horizontal direction so as to adjust the horizontal offset of the lens;

the correction mechanism further includes: a second adjustment mechanism; the transmission rod of the second adjusting mechanism is vertically arranged, and when the rotating wheel of the second adjusting mechanism rotates in the circumferential direction, the transmission rod of the second adjusting mechanism moves linearly along the vertical direction to push the lens to move along the vertical direction so as to adjust the vertical offset of the lens.

3. The correction mechanism for adjusting eccentricity of a lens according to claim 2, wherein the first adjustment mechanism is in contact with a first end of the lens circumferential wall surface in a horizontal direction; the correcting mechanism for adjusting the eccentricity of the lens further comprises:

the telescopic rod is in contact with the second end of the circumferential wall surface of the lens in the horizontal direction, and the first end of the circumferential wall surface of the lens is opposite to the second end of the circumferential wall surface of the lens;

the telescoping rod is further configured to: when the transmission rod moves to a first direction along the horizontal direction, the transmission rod pushes the lens to move to the first direction so as to push the telescopic rod to move to the first direction; when the transmission rod moves to a second direction along the horizontal direction, the telescopic rod pushes the lens to move to the second direction; the first direction is the direction of the lens moving towards the telescopic rod, and the second direction is the direction of the lens moving towards the transmission rod.

4. A corrective mechanism for adjusting the decentration of a lens according to claim 1, characterized in that the transmission ratio of said drive means to said wheel is less than 1.

5. The correction mechanism for adjusting eccentricity of a lens according to claim 4, wherein the driving means comprises: a stepping motor;

the correction mechanism further includes:

the shaft hole of the first gear is connected with the stepping motor;

and the second gear is coaxially arranged with the rotating wheel and drives the second gear to rotate when the rotating shaft of the stepping motor rotates, so that the rotating wheel rotates in the circumferential direction.

6. The corrective mechanism for adjusting lens decentration of claim 1, wherein said corrective mechanism further comprises:

the driving device is fixed on the base;

the lens fixing device comprises a guide plate, one end of the guide plate is fixedly connected with the base, a through hole is formed in the guide plate, and one end of the transmission rod is in contact with the circumferential wall surface of the lens through the through hole.

7. A corrective mechanism for adjusting the decentration of a lens according to any of claims 1-6, characterized in that said corrective mechanism further comprises:

the lens holder comprises a base, wherein an accommodating cavity is formed in the base and is used for accommodating a lens;

the axial direction of the transmission rod is perpendicular to the axial direction of the lens.

8. A correction system for adjusting decentration of a lens, the correction system comprising: a correcting mechanism for adjusting decentering of a lens as claimed in any one of claims 1 to 7, and a lens barrel comprising:

the lens comprises a lens barrel, wherein the end part of the lens barrel is provided with a mounting groove, the mounting groove is used for mounting a lens, and a gap exists between the lens and the circumferential wall surface of the mounting groove;

the spring pressing sheet is arranged at the end part of the lens barrel and elastically supports the lens so as to enable the lens to be perpendicular to the axial direction of the lens barrel.

9. A correction system for adjusting lens decentration according to claim 8, wherein the lens is provided with an adjustment surface on a circumferential wall surface, the adjustment surface being tangential to the circumference of the lens, the adjustment surface being adapted to contact the transmission rod.

10. The system of claim 8, wherein the barrel has a through hole at the connection between the lens and the mounting groove, and the transmission rod passes through the through hole and contacts with the circumferential wall of the lens.

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