TWI463171B - Anti-shake apparatus and mobile phone using the same - Google Patents

Description

Anti-shake device and mobile phone

The present invention relates to an anti-shake device and a mobile phone including the anti-shake device.

With the development of technology, the image capture module has become more and more miniaturized, and it has portability because it can be installed on portable devices such as mobile phones, personal digital assistants, and notebook computers. However, the portable device in which the small image capturing device is located is also small in size. Therefore, when the user uses the shutter, the portable device is easily shaken when the shutter is pressed, and the image captured by the image capturing device is blurred.

Generally, there are two methods for solving the body shake, which are generally applied to a film camera or a digital camera product. It fixes the camera or adds a stable grip mechanism to reduce the probability of body shake. For example, the tripod is selected, but because the tripod is relatively bulky, it is inconvenient to carry and place, and the loading and unloading and adjustment are troublesome, and it is not suitable for fast moving shooting. Secondly, the camera can be fixed on the handle by means of the handle, and the high-quality shooting activity can be performed by the bracket, and the control of the electronic shutter is located on the index finger of the handle, which is convenient and reliable to use. The handle is based on the soldier's gun shooting principle, which makes the camera more stable and reduces the impact of jitter on the shooting. However, it only reduces the occurrence of camera shake, and can not reduce the impact of jitter on the quality of the captured image, and can not achieve the purpose of shooting higher quality images.

In addition, you can also move the compensation lens group to eliminate the main lens module jitter. The impact, but it also expands the imaging range. Due to the addition of a set of compensating lens sets, the size of the camera module or the lens barrel is also increased at the same time, which is not conducive to carrying, so it is not suitable for small or miniature shooting. Device.

In view of the above, it is necessary to provide an anti-shake device capable of reducing jitter and having a small size, and a mobile phone including the anti-shake device.

An anti-shake device is applied to a photographing device, the photographing device includes a lens module and an image sensor, and the anti-shake device includes a connecting portion, a first magnetic element and a second magnetic element that are opposite in position and spaced apart by a predetermined distance, The image sensor is electrically connected to the connecting portion, the first magnetic component is fixed to the connecting portion, and a central normal of the image sensor is parallel to an optical axis of the lens module, and the first magnetic component and the first magnetic component The magnetic attraction between the two magnetic elements is caused by the magnetic attraction force or the magnetic repulsive force to move the connecting portion and the image sensor in a direction perpendicular to the shaking direction of the lens module in a plane perpendicular to the optical axis of the lens module.

A mobile phone having a photographing device including a lens module and an image sensor, further comprising an anti-shake device comprising a connecting portion, a first magnetic component positioned at a predetermined distance from each other, and a second magnetic component, the image sensor is electrically connected to the connecting portion, the first magnetic component is fixed to the connecting portion, and a central normal of the image sensor is parallel to an optical axis of the lens module, the first Between the magnetic element and the second magnetic element, the connecting portion and the image sensor are in a direction perpendicular to the optical axis of the lens module toward the lens module by a magnetic attraction force or a magnetic repulsive force. Move in the opposite direction.

Compared with the prior art, the anti-shake device and the mobile phone provided by the present invention move the image feeling by generating an attractive force and a repulsive force between the first magnetic element and the second magnetic element. The detector compensates for the jitter of the camera and improves the imaging effect.

10‧‧‧Anti-shake device

21‧‧‧ lens module

210‧‧‧ upper surface

22‧‧‧Connecting Department

220‧‧‧ bottom

221, 240‧‧‧ inner side wall

223‧‧‧Outer side wall

24‧‧‧ Shell

242, 212‧‧‧through aperture

30‧‧‧Image Sensor

40‧‧‧ permanent magnet

401‧‧‧First permanent magnet

402‧‧‧Second permanent magnet

403‧‧‧ Third permanent magnet

404‧‧‧fourth permanent magnet

50‧‧‧Electromagnetic coil

501‧‧‧First electromagnetic coil

502‧‧‧second electromagnetic coil

503‧‧‧ Third electromagnetic coil

504‧‧‧fourth electromagnetic coil

1 is a top plan view of an anti-shake device and a photographing device according to an embodiment of the present invention.

2 is a side cross-sectional view of an anti-shake device and a photographing device according to an embodiment of the present invention.

FIG. 3 is a schematic diagram showing the working state of the anti-shake device provided by the embodiment of the present invention.

The present invention will be specifically described below with reference to the accompanying drawings.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , the anti-shake device 10 provided by the embodiment of the present invention includes a connecting portion 22 , a permanent magnet 40 and an electromagnetic coil 50 at a certain distance from each other. In addition, a sensor and a microprocessor (not shown) are also included.

The camera of the mobile phone (not shown) includes a lens module 21 and an image sensor 30. The lens module 21 has an upper surface 210 and a clear aperture 212 located substantially at the center of the upper surface 210.

The connecting portion 22 has a hollow rectangular parallelepiped structure having a bottom surface 220 and four outer side walls 223 and an inner side wall 221 opposite each outer side wall 223. Each outer side wall 223 is perpendicular to the bottom surface 220 for fixing the permanent magnet 40. The connecting portion 22 is carried by the carrying board and slidable relative to the carrying board, and the carrying board may actually be a circuit board of a mobile phone.

The connecting portion 22 may also be in the form of another structure that can fix the permanent magnet 40, such as a hollow cylinder or the like.

The lens module 21 is located in a hollow region of the connecting portion 22 and is within the connecting portion 22 The side wall 221 is maintained at a predetermined distance, which is also a movable range of the connecting portion 22.

The bottom surface 220 of the connecting portion 22 is electrically connected to an image sensor 30. Preferably, the central normal direction of the image sensor 30 is parallel to the central axis of the lens module 21. Generally, in the initial state, the center normal direction coincides with the central axis.

The outer side wall 223 of the connecting portion 22 is provided with a permanent magnet 40. In this embodiment, each of the outer sidewalls 223 is provided with a permanent magnet, the N pole of which is attached to the outer sidewall 223, and the S pole is away from the outer sidewall 223. The permanent magnet located in the positive direction of the Y direction is the first permanent magnet 401, the permanent magnet located in the negative direction of the Y direction is the second permanent magnet 402, and the permanent magnet located in the positive direction of the X direction is the third permanent magnet 403, which is negative in the X direction. The permanent magnet is a fourth permanent magnet 404.

Of course, other numbers of permanent magnets may be disposed on the outer sidewall 223 according to actual needs, and the arrangement of the magnetic poles may also be opposite to that shown in this embodiment.

In the present embodiment, the anti-shake device 10 further includes a housing 24 disposed outside the connecting portion 22. The housing 24 is a rectangular parallelepiped structure having a clear aperture 242 having an inner sidewall 240.

The upper surface 210 of the lens module 21 is fixed to the inner side wall 240, so that the lens module 21 can be stably suspended above the bottom surface 220 of the connecting portion 22. Preferably, the light aperture 212 of the lens module 21 is The central axes of the light-passing apertures 242 of the outer casing 24 coincide.

An electromagnetic coil 50 is disposed at a position of the inner side wall 240 of the outer casing 24 opposite to each of the permanent magnets. The first electromagnetic coil 501 is opposite to the first permanent magnet 401, and the second electromagnetic coil is opposite to the second permanent magnet 402. 502, opposite to the third permanent magnet 403 is a third electromagnetic coil 503, and opposite to the fourth permanent magnet 404 is a fourth electromagnetic wire Circle 504.

Each of the electromagnetic coils is energized to produce a magnetic field that is perpendicular to the inner sidewall 240.

In this embodiment, when the lens module moves in the positive direction in the Y direction or the moving direction thereof has a moving component in the positive direction of the Y direction, the sensor converts the sensed moving state signal into a digital signal and an analog signal. Or after the pulse signal, the microprocessor performs data processing to generate a control signal to control the energization time, intensity and direction of the electromagnetic coil. The first electromagnetic coil 501 and the second electromagnetic coil 502 in the Y direction are energized, and the current direction is as shown in the drawing. The direction of the magnetic field is determined according to the right-hand rule. It can be seen that the magnetic field generated by the second electromagnetic coil 502 attracts the second permanent magnet 402, and the magnetic field generated by the first electromagnetic coil 501 repels the first permanent magnet 401. The connecting portion 22 moves in a negative direction of the Y direction in a plane perpendicular to the optical axis of the lens module 21 under the action of the attraction force of the second electromagnetic coil 502 and the repulsive force of the first electromagnetic coil 501. Therefore, the image sensor 30 also moves in the negative direction of the Y direction, thereby realizing the anti-shake function during shooting and improving the imaging effect.

At the same time, the anti-shake device 10 can also achieve jitter compensation in the X direction. When the entire mobile phone has moving or moving components in both the X direction and the Y direction, the four directions of the electromagnetic coil and the permanent magnet are required to jointly adjust the position of the image sensor 30 to maximize the jitter compensation.

In the present embodiment, the N poles of the two permanent magnets in one direction are all adjacent to the outer side wall 223 of the connecting portion 22, so that when the electromagnetic coils in this direction are energized, the currents of the two electromagnetic coils are opposite in direction. If two permanent magnets in one direction, the N pole of one permanent magnet is close to the outer side wall 223, and the S pole of the other permanent magnet is close to the outer side wall, when the electromagnetic coil in this direction is energized, the two electromagnetic coils are through The current direction is the same.

The anti-shake device 10 provided by the embodiment can drive the image sensor to move in the opposite direction of the occurrence of the jitter by the attraction and repulsive force of the electromagnetic coil and the permanent magnet, and perform the shake compensation, the structure is simple, and the volume is small.

It can be understood that in the embodiment, the outer casing 24 and the connecting portion 22 can also be cylindrical or other structures suitable for mobile phones.

The anti-shake device 10 can be applied to a portable electronic device such as a mobile phone, a personal digital assistant, and the outer casing 24 can be connected or fixed to the main circuit board of the portable electronic device through a flexible circuit board.

The outer casing 24 can be either an outer casing independent of the lens module 21 or a casing of the lens module 21, similar to the lens barrel, and the permanent magnet can be mounted as shown in FIG. 1 , FIG. 2 and FIG. 3 . It is disposed on the inner side wall of the lens barrel and corresponds to the electromagnetic coil in position. Of course, the positions of the permanent magnet and the electromagnetic coil can be interchanged.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧Anti-shake device

21‧‧‧ lens module

210‧‧‧ upper surface

22‧‧‧Connecting Department

220‧‧‧ bottom

221, 240‧‧‧ inner side wall

223‧‧‧Outer side wall

24‧‧‧ Shell

242‧‧‧Light aperture

30‧‧‧Image Sensor

401‧‧‧First permanent magnet

402‧‧‧Second permanent magnet

Claims (9)

An anti-shake device is applied to a photographing device, comprising: a lens module and an image sensor, the lens module having an upper surface, wherein the anti-shake device comprises a connecting portion, the positions are opposite and are predetermined a first magnetic component and a second magnetic component, wherein the image sensor is electrically connected to the connecting portion, the first magnetic component is fixed to the connecting portion, a central normal of the image sensor, and the lens module The optical axis is parallel, and the connecting portion is driven by the magnetic attraction force or the magnetic repulsive force between the first magnetic component and the second magnetic component, and the image sensor is in a plane perpendicular to the optical axis of the lens module. The lens module moves in the opposite direction of the shaking direction, and the connecting portion has a hollow rectangular parallelepiped structure, and includes a bottom surface, the image sensor is disposed on a bottom surface of the connecting portion; the anti-shake device further includes a casing, the casing The outer casing is disposed outside the connecting portion, and the outer casing has an inner side wall, and an upper surface of the lens module is fixed to an inner side wall of the connecting portion. The anti-shake device of claim 1, wherein: the number of the first magnetic elements is 4, the number of the second magnetic elements is 4, and the first magnetic elements and the second magnetic elements are distributed Four different orientations of the image sensor. The anti-shake device of claim 1, wherein the first magnetic element is a permanent magnet and the second magnetic element is an electromagnetic coil. The anti-shake device of claim 1, wherein the first magnetic element is an electromagnetic coil, and the second magnetic element is a permanent magnet. The anti-shake device of claim 3, wherein the connecting portion is a square tubular structure having a bottom surface and an outer sidewall, the image sensor being located at the bottom surface, the first The magnetic element is fixed to the outer side wall. The anti-shake device of claim 5, wherein: the second magnetic component is disposed on the Inner side wall. The anti-shake device of claim 5, wherein the lens module is located in a space defined by the connecting portion. The anti-shake device of claim 1, wherein: further comprising: a sensor for sensing a direction of shaking of the mobile phone, and a microprocessor for controlling the The energization time, intensity and direction of a magnetic element or the second magnetic element. A mobile phone having a camera device, the camera device comprising a lens module and an image sensor, the improvement comprising: further comprising the anti-shake device according to claim 1 of the patent application.