Optical anti-shake mechanism and optical lens

Abstract

The utility model provides an optical anti-shake mechanism and an optical lens. The optical anti-shake mechanism comprises a support, an optical position sensor arranged on the support, a lens barrel movably connected with the support, a light emitter arranged on the lens barrel, and a compensation driving member connecting the lens barrel and the support. Wherein the lens cone can drive the light emitter to move relative to the optical position sensor, the light emitter can emit light to the optical position sensor, the optical position sensor is electrically connected with the compensation driving part, the optical position sensor is used for detecting the motion amount of the light emitter and converting the motion amount into current, and the compensation driving part is used for driving the lens cone to move. By adopting the technical scheme, the optical position sensor can convert the light spot position into an electric signal, the system response is fast, the cost is low, and therefore the optical position sensor has wide application value. Meanwhile, a target signal can be modulated, and the influence of a magnetic field generated by the compensation driving part is reduced, so that the anti-interference capability can be remarkably improved, and high precision and strong anti-interference capability are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lenses, and more specifically to an optical anti-shake mechanism and an optical lens. Background Art

[0002] Optical image stabilization refers to the use of optical components in cameras and other similar imaging instruments to avoid or reduce instrument jitter in the process of capturing optical signals, thereby improving image quality. The lens group achieves image stabilization by wrapping the suspended lens with magnetic force, thereby effectively overcoming image blur caused by camera vibration. This effect is more obvious for digital cameras with large zoom lenses. Usually, the gyroscope in the lens detects tiny movements and transmits signals to the microprocessor to immediately calculate the displacement that needs to be compensated. Then, the compensation lens group is used to compensate according to the direction and displacement of the lens jitter. The compensation lens group adjusts its position and angle accordingly to keep the optical path stable, thereby effectively overcoming image blur caused by camera vibration.

[0003] However, the position detection components of traditional optical image stabilization mechanisms use magnets and Hall elements, which are easily affected by the magnetic field generated when the coil is energized, and the detection accuracy of the position detection components is low, resulting in inaccurate displacement compensation of the optical image stabilization mechanism, reducing the anti-shake effect. Utility Model Content

[0004] The utility model aims to provide an optical anti-shake mechanism and an optical lens, so as to solve the technical problem in the prior art that the optical anti-shake mechanism is easily affected by the magnetic field and thus leads to poor anti-shake effect.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, an optical image stabilization mechanism is provided, comprising:

[0007] A bracket, an optical position sensor arranged on the bracket, a lens barrel movably connected to the bracket, a light emitter arranged on the lens barrel, and a compensation driving member connecting the lens barrel and the bracket; wherein the lens barrel can drive the light emitter to move relative to the optical position sensor, the light emitter can emit light toward the optical position sensor, the optical position sensor is electrically connected to the compensation driving member, the optical position sensor is used to detect the movement of the light emitter and convert it into current, and the compensation driving member is used to drive the lens barrel to move.

[0008] By adopting the above technical solution, the optical position sensor detects and feeds back the movement of the light emitter, and generates a force in the compensation drive through different currents to compensate for the movement of the lens, thereby compensating for the optical axis offset and achieving the purpose of eliminating jitter. The optical position sensor can convert the position of the light spot into an electrical signal, and the system has a fast response and low cost, so it has the value of wide application. At the same time, the target signal can be modulated to reduce the influence of the magnetic field generated by the compensation drive, thereby significantly improving the anti-interference ability and realizing a high-precision, anti-interference optical anti-shake mechanism.

[0009] In one embodiment, a light emitting slit is provided on the lens barrel, the position of the light emitting slit corresponds to the optical position sensor, the light emitter is arranged close to the light emitting slit, and the light of the light emitter can pass through the slit and be projected onto the optical position sensor.

[0010] By adopting the above technical solution, the light emitting slit can enable the light emitter to form a light spot with a regular shape, which is beneficial for the optical position sensor to obtain and improves the accuracy of the optical position sensor in obtaining the movement amount.

[0011] In one embodiment, the optical image stabilization mechanism further includes an angular velocity sensor disposed on the lens barrel, the angular velocity sensor is used to obtain the movement direction of the lens barrel, and the angular velocity sensor is electrically connected to the compensation driving member.

[0012] By adopting the above technical solution, the compensation driving component obtains the movement direction and movement amount of the optical lens to compensate for the optical axis deviation of the optical lens, thereby achieving the purpose of eliminating jitter.

[0013] In one embodiment, the lens barrel is defined with a transverse direction and a longitudinal direction perpendicular to the transverse direction, wherein the transverse direction and the longitudinal direction are perpendicular to the axis of the lens barrel, and the optical image stabilization mechanism includes at least two compensation driving members, wherein one of the compensation driving members is used to drive the lens barrel to move along the transverse direction, and the other compensation driving member is used to drive the lens barrel to move along the longitudinal direction.

[0014] By adopting the above technical solution, two compensation driving members are provided to compensate for the optical axis deviation of the optical lens in two directions, thereby achieving the purpose of eliminating jitter.

[0015] In one embodiment, the bracket is provided with a first sliding bar parallel to the longitudinal direction and a second sliding bar parallel to the transverse direction, and the lens barrel is provided with a first slider slidably connected to the first sliding bar and a second slider slidably connected to the second sliding bar. The lens barrel can move along the length direction of the first sliding bar through the first slider, and the lens barrel can move along the length direction of the second sliding bar through the second slider.

[0016] By adopting the above technical solution, directional movement between the lens barrel and the bracket is achieved, and at the same time, the rotation of the lens barrel relative to the bracket can be restricted.

[0017] In one embodiment, the first sliding bar is adjacent to the second sliding bar, wherein one of the compensation driving members and the first sliding bar are respectively arranged on two opposite sides of the lens barrel, and the other compensation driving member and the second sliding bar are respectively arranged on the other two opposite sides of the lens barrel.

[0018] By adopting the above technical solution, the first sliding bar and the second sliding bar are respectively opposite to the two compensating driving members, thereby improving the rationality of the arrangement of the first sliding bar, the second sliding bar and the compensating driving member.

[0019] In one embodiment, a first limiting groove is provided on a surface of the bracket opposite to the lens barrel, a second limiting groove is provided on a surface of the lens barrel opposite to the bracket, the second limiting groove is opposite to the first limiting groove and a limiting ball is provided therebetween.

[0020] By adopting the above technical solution, the limiting ball is placed between the lens barrel and the bracket to support the rotation of the lens barrel.

[0021] In one embodiment, the optical image stabilization mechanism further includes an elastic member, and the elastic member connects the bracket and the lens barrel.

[0022] By adopting the above technical solution, the anti-shake performance of the optical lens equipped with the optical anti-shake mechanism of this embodiment is further improved.

[0023] In one embodiment, the compensation drive member includes a coil and a magnet, wherein one of the coil and the magnet is disposed on the lens barrel, and the other of the coil and the magnet is disposed on the bracket, and the coil is electrically connected to the optical position sensor, and the coil is used to receive the current transmitted from the optical position sensor to generate a magnetic field, so that the magnet moves relative to the coil.

[0024] By adopting the above technical solution, the purpose of eliminating the jitter of the optical lens is achieved.

[0025] In a second aspect, an optical lens is provided, comprising a lens and the above-mentioned optical image stabilization mechanism, wherein the lens is mounted on the optical image stabilization mechanism.

[0026] By adopting the above technical solution, on the basis of having the advantages of the optical image stabilization mechanism of the above embodiment, the optical lens of this embodiment also has the advantages of high position detection accuracy, strong anti-interference ability, fast system response and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a three-dimensional structural diagram of the optical image stabilization mechanism provided by an embodiment of the utility model.

[0029] Figure 2 It is an exploded view of an optical image stabilization mechanism provided by an embodiment of the utility model from one viewing angle.

[0030] Figure 3 It is a cross-sectional view of the optical image stabilization mechanism provided by an embodiment of the utility model.

[0031] Figure 4 It is an exploded view of the optical image stabilization mechanism provided by an embodiment of the utility model from another perspective.

[0032] The reference numerals in the figures are:

[0033] 1. Bracket; 2. Optical position sensor; 3. Lens barrel; 4. Light emitter; 5. Compensation drive member; 6. Lens; 7. Elastic member;

[0034] X, horizontal; Y, vertical; 11, first slide bar; 12, second slide bar; 13, first limiting groove; 14, limiting ball; 15, limiting hole; 31, luminous slit; 32, first slide bar; 33, second slide bar; 34, second limiting groove; 35, limiting column; 51, coil; 52, magnet. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and do not indicate that a device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The following is a more detailed description of the specific implementation of the present utility model in conjunction with specific embodiments:

[0039] like Figure 1 and Figure 2 As shown, an optical anti-shake mechanism provided by an embodiment of the utility model is used to be assembled in an optical lens, so as to reduce the influence of the shaking of the optical lens in shooting a motion scene on the shooting picture, and increase the stability of the optical lens. Specifically, the optical anti-shake mechanism compensates for the shaking optical path through a movable component, so as to achieve the effect of reducing the blur of the shooting picture; the position detection component of the optical anti-shake mechanism provided by this embodiment has a strong ability to resist magnetic field interference, that is, it can obtain the movement amount of the optical lens to provide an accurate compensation amount, thereby improving the anti-shake effect; the following is an explanation through a specific implementation method:

[0040] Please also read Figure 3 , the optical image stabilization mechanism of this embodiment includes:

[0041] A bracket 1, an optical position sensor 2 arranged on the bracket 1, a lens barrel 3 movably connected to the bracket 1, a light emitter 4 arranged on the lens barrel 3, and a compensation driving member 5 connecting the lens barrel 3 and the bracket 1; wherein the lens barrel 3 can drive the light emitter 4 to move relative to the optical position sensor 2, the light emitter 4 can emit light toward the optical position sensor 2, the optical position sensor 2 is electrically connected to the compensation driving member 5, the optical position sensor 2 is used to detect the movement of the light emitter 4 and convert it into electric current, and the compensation driving member 5 is used to drive the lens barrel 3 to move.

[0042] The support 1 is a component for supporting the lens barrel 3, and the support 1 is connected to the optical lens body, so that the lens barrel 3 is connected to the optical lens body;

[0043] The optical position sensor 2 (PSD position sensor, Position Sensitive Device) refers to an optical detection device that can measure the continuous position of a light spot on the surface of the optical position sensor 2. The optical position sensor 2 can also be called a coordinate photocell. The optical position sensor 2 can convert the position of a light spot on the photosensitive surface into an electrical signal. The optical position sensor 2 is composed of a p substrate, a pin photodiode and a surface resistor. It has the advantages of high position resolution, fast response speed and simple processing circuit. The optical position sensor 2 is arranged on the bracket 1. The optical position sensor 2 is used to detect the movement of the lens barrel 3. It needs to be further explained that the optical position sensor 2 can be arranged on a circuit board 8, and the circuit board 8 is covered on the bracket 1.

[0044] The lens barrel 3 is a component for fixing the lens 6; the lens barrel 3 is movably connected to the bracket 1, that is, the lens barrel 3 can move relative to the bracket 1 within a certain range; the lens barrel 3 and the bracket 1 can be connected by a slide rail to achieve a movable connection;

[0045] The light emitter 4 refers to a device for emitting light; the light emitter 4 is disposed on the lens barrel 3, and the light emitter 4 can move along with the movement of the lens barrel 3; the light emitter 4 is used to emit light toward the optical position sensor 2;

[0046] The compensation drive 5 refers to a component used to drive the lens barrel 3 to move relative to the bracket 1; the compensation drive 5 provides power for the movement of the lens barrel 3, and the compensation drive 5 is electrically connected to the optical position sensor 2. The optical position sensor 2 is used to obtain the movement of the light emitter 4, thereby obtaining the movement of the lens barrel 3 relative to the bracket 1. The optical position sensor 2 converts the movement into different currents and feeds back to the compensation drive 5. The compensation drive 5 drives the lens barrel 3 to move differently according to different currents to compensate for the optical axis offset of the lens 6.

[0047] The working principle of the optical image stabilization mechanism of this embodiment is as follows:

[0048] The lens 6 is installed inside the lens barrel 3 to form an optical lens. The lens 6 is set based on the axis of the lens barrel 3, and the lens 6 can be set coaxially with the lens barrel 3. When the optical lens shakes, that is, relative movement occurs between the lens barrel 3 and the bracket 1, the light emitted by the light emitter 4 is projected onto the photosensitive area of ​​the optical position sensor 2. The optical position sensor 2 detects the movement of the continuous position change of the light and feeds back currents of different sizes to the compensation driver 5. The forces generated by the different currents in the compensation driver 5 compensate for the movement of the lens 6 to compensate for the optical axis offset, thereby achieving the purpose of eliminating the shake.

[0049] By adopting the above technical solution, the optical position sensor 2 detects and feeds back the movement of the light emitter 4, and generates a force in the compensation driver 5 through different currents to compensate for the movement of the lens 6, thereby compensating for the optical axis offset and achieving the purpose of eliminating jitter. The optical position sensor 2 can convert the light spot position into an electrical signal, and the system has a fast response and low cost, so it has the value of wide application. At the same time, the target signal can be modulated to reduce the influence of the magnetic field generated by the compensation driver 5, thereby significantly improving the anti-interference ability and realizing a high-precision, anti-interference optical anti-shake mechanism.

[0050] like Figure 4 As shown, in one embodiment, a light emitting slit 31 is provided on the lens barrel 3, the position of the light emitting slit 31 corresponds to the optical position sensor 2, and the light emitter 4 is arranged close to the light emitting slit 31, and the light of the light emitter 4 can pass through the light emitting slit 31 and be projected onto the optical position sensor 2.

[0051] Here, it can be understood that the light emitting slit 31 refers to a structure used to enable the light emitter 4 to form a light spot suitable for detection by the optical position sensor 2; the light emitting slit 31 is opened on the lens barrel 3, and preferably, the cross-section of the light emitting slit 31 is square, so that the light from the light emitter 4 can form a square light spot when passing through the light emitting slit 31, and the square light spot is projected onto the photosensitive surface of the optical position sensor 2. When the square light spot moves on the photosensitive surface as the lens barrel 3 moves, the optical position sensor 2 can obtain the movement of the lens barrel 3; at the same time, the shape of the square light spot is relatively regular, which can be beneficial for the optical position sensor 2 to obtain the movement of the square light spot.

[0052] By adopting the above technical solution, the light emitting slit 31 can enable the light emitter 4 to form a light spot with a regular shape, which is beneficial for the optical position sensor 2 to obtain and improves the accuracy of the optical position sensor 2 in obtaining the movement amount.

[0053] In one embodiment, the light emitter 4 is an infrared light emitter 4 , which can emit infrared light, and the light emission is concentrated, which is convenient for the optical position sensor 2 to acquire.

[0054] In one embodiment, the optical image stabilization mechanism further includes an angular velocity sensor disposed on the lens barrel 3 . The angular velocity sensor is used to obtain the movement direction of the lens barrel 3 . The angular velocity sensor is electrically connected to the compensation driving member 5 .

[0055] Here, it can be understood that when the optical lens shakes, the angular velocity sensor (optionally a gyroscope sensor) detects the angular velocity of the lens movement, that is, detects the movement of the lens in the vertical and horizontal directions. Generally speaking, the vertical direction is the longitudinal direction of the optical lens, and the horizontal direction is the lateral direction of the optical lens; the angular velocity sensor is used to feed back the movement direction of the optical lens to the compensation drive 5.

[0056] By adopting the above technical solution, the compensation driving member 5 obtains the movement direction and movement amount of the optical lens to compensate for the optical axis deviation of the optical lens, thereby achieving the purpose of eliminating jitter.

[0057] Please refer again Figure 2 In one embodiment, the lens barrel 3 defines a horizontal direction X and a longitudinal direction Y perpendicular to the horizontal direction X, the horizontal direction X and the longitudinal direction Y are perpendicular to the axis of the lens barrel 3, and the optical image stabilization mechanism includes at least two compensation driving members 5, one of which is used to drive the lens barrel 3 to move along the horizontal direction X, and the other compensation driving member 5 is used to drive the lens barrel 3 to move along the longitudinal direction Y.

[0058] Here, it can be understood that the jitter of the optical lens generally occurs in the vertical direction and the horizontal direction of the lens barrel 3. The lens barrel 3 is defined as a horizontal direction X and a vertical direction Y. The horizontal direction X and the vertical direction Y are perpendicular to each other, and the horizontal direction X and the vertical direction Y are perpendicular to the axis of the lens barrel 3. When the optical lens is in use, the horizontal direction X corresponds to the horizontal direction, and the vertical direction Y corresponds to the vertical direction. The optical anti-shake mechanism includes at least two anti-shake driving members, one of which is a compensation driving member 5 for driving the lens barrel 3 to move along the horizontal direction X, and the other compensation driving member 5 is used to drive the lens barrel 3 to move along the longitudinal direction Y.

[0059] By adopting the above technical solution, two compensation driving members 5 are provided to compensate for the optical axis deviation of the optical lens in two directions, thereby achieving the purpose of eliminating jitter.

[0060] In one embodiment, the bracket 1 is provided with a first sliding bar 11 parallel to the longitudinal direction Y and a second sliding bar 12 parallel to the transverse direction X, and the lens barrel 3 is provided with a first sliding block 32 slidably connected to the first sliding bar 11 and a second sliding block 33 slidably connected to the second sliding bar 12. The lens barrel 3 can move along the length direction of the first sliding bar 11 through the first sliding block 32, and the lens barrel 3 can move along the length direction of the second sliding bar 12 through the second sliding block 33.

[0061] Here, it can be understood that the lens barrel 3 can move along the horizontal direction X and the vertical direction Y relative to the bracket 1. At this time, a first slide bar 11 and a second slide bar 12 are arranged on the bracket 1, the first slide bar 11 is parallel to the longitudinal direction Y of the lens barrel 3, and the second slide bar 12 is parallel to the horizontal direction X of the lens barrel 3. A first slider 32 is provided on the lens barrel 3, and the first slider 32 is slidably connected to the first slide bar 11, that is, the first slider 32 can slide along the length direction of the first slide bar 11, and the second slider 33 is slidably connected to the second slide bar 12, that is, the second slider 33 can slide along the length direction of the second slide bar 12; in this way, the lens barrel 3 can move along the length direction of the first slide bar 11 and the second slide bar 12, thereby realizing the movement of the lens barrel 3 relative to the bracket 1 along its own horizontal direction X and longitudinal direction Y.

[0062] It needs to be further explained that the first slide bar 11 and the second slide bar 12 can be an integrally formed part, that is, a rod body is bent to form the first slide bar 11 and the second slide bar 12 perpendicular to each other; or the first slide bar 11 and the second slide bar 12 are manufactured separately.

[0063] By adopting the above technical solution, the directional movement between the lens barrel 3 and the bracket 1 is achieved, and at the same time, the rotation of the lens barrel 3 relative to the bracket 1 can be restricted.

[0064] In one embodiment, the first slide bar 11 and the second slide bar 12 are disposed adjacent to each other, wherein one compensation driving member 5 and the first slide bar 11 are disposed on opposite sides of the lens barrel 3 , respectively, and another compensation driving member 5 and the second slide bar 12 are disposed on the other opposite sides of the lens barrel 3 , respectively.

[0065] Here, it can be understood that the first slide bar 11, the second slide bar 12 and the two compensation driving members 5 are arranged in sequence along the circumference of the lens barrel 3, the first slide bar 11 is adjacent to the second slide bar 12, and the two compensation driving members 5 are adjacent to each other, one of the compensation driving members 5 is opposite to the first slide bar 11, and the other compensation driving member 5 is opposite to the second slide bar 12.

[0066] By adopting the above technical solution, the first slide bar 11 and the second slide bar 12 are respectively opposite to the two compensation driving members 5, thereby improving the rationality of the arrangement of the first slide bar 11, the second slide bar 12 and the compensation driving member 5.

[0067] Please also read Figure 2 and Figure 4 In one embodiment, a first limiting groove 13 is provided on the surface of the bracket 1 opposite to the lens barrel 3, and a second limiting groove 34 is provided on the surface of the lens barrel 3 opposite to the bracket 1. The second limiting groove 34 is opposite to the first limiting groove 13 and a limiting ball 14 is provided therebetween.

[0068] Here, it can be understood that the bracket 1 and the lens barrel 3 are arranged opposite to each other, and a first limiting groove 13 and a second limiting groove 34 are provided on the opposite surfaces of the two. The first limiting groove 13 and the second limiting groove 34 are arranged opposite to each other, and a limiting ball 14 is provided therebetween, and the limiting ball 14 can move in the first limiting groove 13 and the second limiting groove 34; when the lens barrel 3 and the bracket 1 move relative to each other in the horizontal direction X or the longitudinal direction Y, the positions of the first limiting groove 13 and the second limiting groove 34 will be misaligned. However, since a limiting ball 14 is provided between the first limiting groove 13 and the second limiting groove 34, the limiting ball 14 can only move in the first limiting groove 13 and the second limiting groove 34 under the restriction of the groove walls of the first limiting groove 13 and the second limiting groove 34. In this way, the lens barrel 3 can only move relative to the bracket 1 within a certain range. In addition, the limiting ball 14 can also limit the rotation of the lens barrel 3 relative to the bracket 1.

[0069] Optionally, the limiting balls 14 include but are not limited to ceramic balls, which have high durability.

[0070] By adopting the above technical solution, the limiting ball 14 is placed between the lens barrel 3 and the bracket 1 to support the lens barrel 3 .

[0071] In one embodiment, the bracket 1 is provided with a limiting hole 15, and the lens barrel 3 is further provided with a limiting post 35 inserted into the limiting hole 15. The limiting post 35 is clearance-matched with the limiting hole 15, so that the hole wall of the limiting hole 15 can limit the movement range of the limiting post 35, that is, the movement and rotation between the lens barrel 3 and the bracket 1 are limited. In one embodiment, the optical anti-shake mechanism further includes an elastic member 7, which connects the bracket 1 and the lens barrel 3.

[0072] Here, it can be understood that the elastic member 7 includes but is not limited to a spring; the elastic member 7 connects the bracket 1 and the lens barrel 3. When the bracket 1 moves relative to the lens barrel 3, since the elastic member 7 is provided between the bracket 1 and the lens barrel 3, the elastic member 7 is stretched or compressed to generate elastic force, and the elastic force drives the lens barrel 3 to move with the bracket 1. At the same time, the elastic force has a hysteresis, so that the movement of the lens barrel 3 is slower than the movement of the bracket 1, thereby realizing the anti-shake effect of the optical lens.

[0073] In addition, the elastic member 7 connecting the bracket 1 and the lens barrel 3 can improve the shock-absorbing effect of the optical lens, which also improves the anti-shake performance.

[0074] By adopting the above technical solution, the anti-shake performance of the optical lens equipped with the optical anti-shake mechanism of this embodiment is further improved.

[0075] In one embodiment, the optical image stabilization mechanism further includes a plurality of elastic members 7 , which are sequentially arranged along the circumference of the lens barrel 3 , so that the elastic members 7 can weaken the influence of forces in multiple directions when the optical lens shakes.

[0076] In one embodiment, the compensation drive member 5 includes a coil 51 and a magnet 52, wherein one of the coil 51 and the magnet 52 is disposed on the lens barrel 3, and the other of the coil 51 and the magnet 52 is disposed on the bracket 1, and the coil 51 is electrically connected to the optical position sensor 2, and the coil 51 is used to receive the current transmitted from the optical position sensor 2 to generate a magnetic field, so that the magnet 52 moves relative to the coil 51.

[0077] Here, it can be understood that when the optical lens shakes, the angular velocity sensor detects the angular velocity of the optical lens movement, that is, it detects that the optical lens has moved in the vertical and horizontal directions; the infrared light emitted from the light emitter 4 passes through the slit on the lens barrel 3 and is incident on the photosensitive area on the optical position sensor 2. The optical position sensor 2 detects the movement of the continuous position change of the infrared light and feeds back currents of different sizes to the coil 51. The force generated by the interaction between the magnetic field generated by the current in the coil 51 and the magnet 52 compensates for the movement of the lens 6 in the lens barrel 3 to compensate for the optical axis offset, thereby achieving the purpose of eliminating the shake.

[0078] By adopting the above technical solution, the purpose of eliminating the jitter of the optical lens is achieved.

[0079] In a second aspect, an optical lens is provided, comprising a lens 6 and the above-mentioned optical image stabilization mechanism, wherein the lens 6 is mounted on the optical image stabilization mechanism.

[0080] By adopting the above technical solution, on the basis of having the advantages of the optical image stabilization mechanism of the above embodiment, the optical lens of this embodiment also has the advantages of high position detection accuracy, strong anti-interference ability, fast system response and low cost.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical image stabilization mechanism, characterized in that: include: A bracket, an optical position sensor arranged on the bracket, a lens barrel movably connected to the bracket, a light emitter arranged on the lens barrel, and a compensation driving member connecting the lens barrel and the bracket; wherein the lens barrel can drive the light emitter to move relative to the optical position sensor, the light emitter can emit light toward the optical position sensor, the optical position sensor is electrically connected to the compensation driving member, the optical position sensor is used to detect the movement of the light emitter and convert it into current, and the compensation driving member is used to drive the lens barrel to move.

2. The optical image stabilization mechanism according to claim 1, wherein: The lens barrel is provided with a light slit, the position of the light slit corresponds to the optical position sensor, the light emitter is arranged close to the light slit, and the light of the light emitter can pass through the slit and be projected onto the optical position sensor.

3. The optical image stabilization mechanism according to claim 1, wherein: The optical anti-shake mechanism further includes an angular velocity sensor disposed on the lens barrel, the angular velocity sensor is used to obtain the moving direction of the lens barrel, and the angular velocity sensor is electrically connected to the compensation driving member.

4. The optical image stabilization mechanism according to claim 1, wherein: The lens barrel is defined with a transverse direction and a longitudinal direction perpendicular to the transverse direction, wherein the transverse direction and the longitudinal direction are perpendicular to the axis of the lens barrel, and the optical image stabilization mechanism includes at least two compensation driving members, wherein one of the compensation driving members is used to drive the lens barrel to move along the transverse direction, and the other compensation driving member is used to drive the lens barrel to move along the longitudinal direction.

5. The optical image stabilization mechanism according to claim 4, wherein: The bracket is provided with a first sliding bar parallel to the longitudinal direction and a second sliding bar parallel to the transverse direction, the lens barrel is provided with a first slider slidably connected to the first sliding bar and a second slider slidably connected to the second sliding bar, the lens barrel can be moved along the length direction of the first sliding bar through the first slider, and the lens barrel can be moved along the length direction of the second sliding bar through the second slider.

6. The optical image stabilization mechanism according to claim 5, wherein: The first slide bar is adjacent to the second slide bar, wherein one of the compensation driving members and the first slide bar are respectively arranged on two opposite sides of the lens barrel, and the other compensation driving member and the second slide bar are respectively arranged on the other two opposite sides of the lens barrel.

7. The optical image stabilization mechanism according to claim 4, wherein: A first limiting groove is provided on a surface of the bracket opposite to the lens barrel, and a second limiting groove is provided on a surface of the lens barrel opposite to the bracket. The second limiting groove is opposite to the first limiting groove and a limiting ball is provided therebetween.

8. The optical image stabilization mechanism according to any one of claims 1 to 7, characterized in that: The optical anti-shake mechanism also includes an elastic member, and the elastic member connects the bracket and the lens barrel.

9. The optical image stabilization mechanism according to any one of claims 1 to 7, characterized in that: The compensation driving component includes a coil and a magnet, wherein one of the coil and the magnet is arranged on the lens barrel, and the other of the coil and the magnet is arranged on the bracket. The coil is electrically connected to the optical position sensor, and the coil is used to receive the current transmitted by the optical position sensor to generate a magnetic field, so that the magnet moves relative to the coil.

10. An optical lens, characterized in that: The invention comprises a lens and the optical image stabilization mechanism according to any one of claims 1 to 9, wherein the lens is mounted on the optical image stabilization mechanism.

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