TW201925894A - Optical apparatus, image stabilization module and circuit board thereof - Google Patents

Abstract

A circuit board includes a plane portion, a first connecting portion and a second connecting portion. The plane portion is a strip-shaped extending along a first direction and has a first end portion and a second end portion opposite to the first end portion. The first connecting portion extends from the first end portion along a second direction. The second connecting portion extends from the second end portion along a third direction. The second direction is substantially perpendicular to the first direction, and the third direction is substantially perpendicular to the first direction. The invention also provides an image stabilization module including the circuit board. The invention further provides an optical apparatus including the image stabilization module.

Description

Optical device, anti-shake module and its circuit board

The invention relates to an optical device, an anti-shake module and its circuit board, in particular to an optical device, an anti-shake module and its circuit board which can avoid the occurrence of rebound force from time to time.

When a user holds an optical device (such as a camera) for operations (such as framing and shooting), the image light of the target will be imaged on a photosensitive unit (such as a charge-coupled element CCD) through the lens unit of the optical device. The photosensitive unit converts the image light of the target object into an electronic signal, then performs image processing with an image processing unit, and finally presents the image screen of the target object on a display unit (for example, a screen).

However, during operation, if the user's hand shakes, it will affect the imaging of the image light of the target object on the photosensitive unit, which in turn affects the user's viewing or shooting pictures. The reason is that today's optical devices are equipped with anti-shake modules to solve this problem.

The principle of anti-shake is as follows: in order to keep the photosensitive unit and the lens unit at the same optical axis position during the opening and closing of the shutter and capturing images, the image can be clearly formed, so the photosensitive unit or the lens unit is provided in a moving part On a frame, for example, when a camera shake occurs, a sensor will send the corresponding electronic signal to a control unit (such as a microcontroller Micro Control Unit, MCU), the control unit judges the vibration situation by the electronic signal, and then controls a driving unit (such as a voice coil motor) to move the moving part to correspondingly move to offset the hand shake, and then keep the photosensitive unit and the lens unit at On the same optical axis.

The drive unit and the control unit are electrically connected through a flexible printed circuit board, please refer to Figures 1 and 2 at the same time, where the component symbol 3 represents a flexible printed circuit board, and the component symbol 7 represents two side walls (for moving Part of the structure). In order to cooperate with the movement of the moving part when resisting the shaking, part of the flexible printed circuit board 3 is bent to form a bent part 31, and the bent part 31 is accommodated in a receiving space 11 formed by the two side walls 7 in. However, the bending portion 31 has a rebound force due to bending. During operation, the rebound force may cause the bending portion 31 to collide with the side walls 7 from time to time, thereby adversely affecting the optical device (such as The picture will suddenly shake).

In view of this, an object of the present invention is to provide an optical device, an anti-shake module and a circuit board thereof, by reducing the bending portion on the circuit board to reduce the incidence of sudden image shake of the optical device.

An embodiment of the circuit board of the present invention includes a flat portion, a first connecting portion, and a second connecting portion. The flat portion extends along a first direction and has a first end and a second end opposite to each other. The first connecting portion extends from the first end along a second direction. The second connecting portion extends from the second end along a third direction. The second direction is substantially perpendicular to the first direction, and the third direction is substantially perpendicular to the first direction.

In another embodiment, wherein the first connection portion extends from the first end portion along a second angle at a first angle, the second connection portion extends from the second end portion along the third The direction extends out by bending at a second angle, wherein the first angle or the second angle is between 45° and 90°.

An embodiment of the anti-shake module of the present invention includes a moving part and a circuit board as described above. The moving part includes an accommodating space. The circuit board includes a flat portion, a first connecting portion, and a second connecting portion, the flat portion is disposed in the receiving space, and the first connecting portion and the second connecting portion extend outward from the flat portion to the Accommodating space.

In another embodiment, the moving part further includes two side walls, and the accommodating space is located between the side walls.

In another embodiment, the plane portion and the side walls are substantially parallel to each other.

In another embodiment, the plane portion is located on a plane, and the shape of the circuit board projected on the plane is substantially U-shaped.

In another embodiment, the anti-shake module further includes a driving unit and a control unit, the driving unit is connected to the moving part, and the control unit controls the driving unit to move so that the moving part generates corresponding movement to resist Shake hands.

In another embodiment, the first connection portion is connected to the drive unit, and the second connection portion is connected to the control unit.

In another embodiment, the driving unit is a voice coil motor and includes a coil, and the first connection portion is connected to the coil.

In another embodiment, the driving unit is a magnet and includes a coil and a Hall element corresponding to the magnet, and the first connection portion is connected to at least one of the magnet, the coil and the Hall element.

An embodiment of the optical device of the present invention includes a photosensitive unit and a lens unit And one of the aforementioned anti-shake modules. The lens unit receives image light of a target and forms an image on the photosensitive unit, and the photosensitive unit is disposed on the moving part.

Another embodiment of the optical device of the present invention includes a photosensitive unit, a lens unit, and an anti-shake module described above. The lens unit receives image light of a target and forms an image on the photosensitive unit. The lens unit includes a movable lens, which is disposed on the moving part.

3‧‧‧Flexible printed circuit board

7‧‧‧Side wall

10‧‧‧Anti-shake module

11‧‧‧accommodating space

17‧‧‧Sidewall

30‧‧‧ circuit board

31‧‧‧Bending Department

51A, 51B‧‧‧Precision pattern coil

53A, 53B ‧‧‧ Hall element

111‧‧‧accommodating space

302‧‧‧Plane Department

304‧‧‧First connection

306‧‧‧Second connection

321‧‧‧First end

323‧‧‧second end

D, D’‧‧‧Second direction

E‧‧‧First direction

F, F’, F” ‧‧‧ third direction

Figure 1 is a schematic diagram of a part of the structure of a conventional flexible printed circuit board.

FIG. 2 is a schematic structural view of the flexible printed circuit board in FIG. 1 when the bent portion is provided in an accommodating space.

FIG. 3 is a partial schematic view of one embodiment of the circuit board of the present invention.

FIG. 4 is a schematic structural view of one embodiment of the anti-shake module of the present invention.

FIG. 5 is a schematic structural view of the planar portion of the circuit board in FIG. 3 when it is installed in a receiving space.

The spirit of this disclosure will be clearly illustrated below with illustrations and detailed descriptions. Anyone with ordinary knowledge in the technical field who understands the embodiments of this disclosure may be changed and modified by the techniques taught in this disclosure. Without departing from the spirit and scope of this disclosure.

Regarding the terms "first", "second", ... etc. used in this article, they do not specifically refer to order or order, nor are they intended to limit the present invention. They are only used to distinguish the elements described in the same technical terms or operating.

The terms "contains", "includes", "has", "contains", etc. used in this article are all open terms, which means including but not limited to.

As used herein, "and/or" includes any or all combinations of the things described.

Regarding the terms used in this article, unless otherwise noted, they usually have the ordinary meaning that each term is used in this field, in the content disclosed here, and in the special content. Certain terms used to describe this disclosure will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in the description of this disclosure.

The terms "approximately" and "approximately" used in this article are used to modify any slightly variable quantity or error, but such slight change or error will not change its essence. Generally speaking, the range of slight changes or errors modified by such terms is 20%, 10% in some preferred embodiments, and 5% in some more preferred embodiments.

Please refer to FIG. 3, the circuit board 30 of the present invention includes a planar portion 302, a first connection portion 304 and a second connection portion 306. The flat portion 302 is elongated along a first direction E and has a first end 321 and a second end 323. When the circuit board 30 is not assembled with other components, the first connecting portion 304 extends from the first end 321 in a second direction D, and the second connecting portion 306 extends from the second end 323 along a third The direction F extends. However, in the case where the circuit board 30 is assembled with other components, the first connection portion 304 and the second connection portion 306 may change their extending directions in order to connect other components. As shown in FIG. 3, the first connecting portion 304 will be bent and extended from the first end portion 321 along the second direction D and the second direction D′ at a first angle (eg, rounded corner or arc angle) in sequence , And the second connecting portion 306 will bend from the second end portion 323 along the third direction F, the third direction F′ and the third direction F″ at a second angle (eg, rounded corner or arc angle) Reach out. Specifically, in some embodiments, the first angle or the second angle is between 45° and 90°. It should be noted that regardless of whether the extending directions of the first connecting portion 304 and the second connecting portion 306 are fixed or changed, the second direction D or D′ is substantially perpendicular to the first direction E, and the third direction F, F'or F" is substantially perpendicular to the first direction E. Note that, assuming that the plane portion 302 is located on a plane, the shape of the circuit board 30 projected on the plane generally assumes the shape of an English letter U. In the present invention In an embodiment, the circuit board 30 is made of a flexible material, and the flexible material includes polyimide (Polyimide, PI) and polyethylene terephthalate (Polyethylene terephthalate, PET).

Please refer to FIG. 4 and FIG. 5, FIG. 4 shows the anti-shake module 10 of the present invention, including the aforementioned circuit board 30, FIG. 5 shows two side walls 17, these side walls 17 are of the anti-shake module 10 Part of the moving part is constructed. As shown in the figure, an accommodating space 111 is formed between the side walls 17. During assembly, the planar portion 302 may be disposed in the accommodating space 111 and substantially parallel to the side walls 17, and the first connecting portion 304 and the second connecting portion 306 may extend outward from the planar portion 302 to the accommodating space 111 . The first connection portion 304 extending beyond the accommodation space 111 will be connected to the drive unit of the anti-shake module 10, and the second connection portion 306 extending beyond the accommodation space 111 will be connected to the control of the anti-shake module 10 Unit (not shown). In some embodiments, the driving unit is a voice coil motor, and the first connecting portion 304 is connected to the coil of the voice coil motor. In some embodiments, the driving unit is a magnet (not shown), and the precision pattern coils 51A, 51B corresponding to the magnet, and having Hall elements 53A, 53B, the first connection portion 304 is connected to the magnet, precision pattern coil At least one of 51A, 51B and Hall elements 53A, 53B.

During operation, the control unit controls the driving unit to move so that the moving part moves accordingly to offset the hand shake. Since the flat part 302 of the circuit board 30 of the present invention does not need to be bent, Therefore, the rebound force will not be generated irregularly like the conventional circuit board. At the same time, the flat portion 302 provided in the accommodating space 111 also indirectly increases the distance between the circuit board 30 and the side walls 17 and relatively reduces the chance of the circuit board 30 colliding with the side walls 17 in the accommodating space 111.

In some embodiments, the moving part is a photosensitive unit equipped with an optical device, and when the camera shake is encountered, the control unit can move the moving part through the driving unit to offset the camera shake, so that the photosensitive unit and the lens unit can be maintained at The same optical axis position for clear imaging. In some other embodiments, the lens unit of the optical device includes a movable lens and a fixed lens, and the moving part is equipped with a movable lens of the lens unit, and the control unit can move the movable lens through the driving unit to ensure The image quality is clear.

In a word, with the help of a circuit board with a special shape, the anti-shake module of the present invention can avoid the problems of irregular rebound force or collision from time to time, thereby enabling the optical device equipped with the anti-shake module to reduce the occurrence of pictures Sudden shaking phenomenon.

Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Anyone who is familiar with this skill can make various modifications and retouching without departing from the spirit and scope of the present invention, so the protection of the present invention The scope shall be as defined in the appended patent application scope.

Claims (10)

A circuit board includes: a plane portion extending along a first direction and having a first end and a second end opposite to each other; a first connecting portion extending from the first end along a A second direction extending; and a second connecting portion extending from the second end along a third direction; wherein, the second direction is substantially perpendicular to the first direction, and the third direction is The first direction is approximately vertical. The circuit board as described in item 1 of the patent application scope, wherein the first connecting portion extends from the first end along a second direction at a first angle, and the second connecting portion extends from the second The end portion is bent and extended at a second angle along the third direction, wherein the first angle or the second angle is between 45° and 90°. An anti-shake module includes: a moving part having an accommodating space; and a circuit board as described in claim 1, the flat part is disposed in the accommodating space, and the first connecting part is connected to the second The part extends outward from the plane part to the outside of the accommodating space. The anti-shake module as described in item 3 of the patent application scope, wherein the plane portion is located on a plane, the shape of the circuit board projected on the plane is generally U-shaped, and the circuit board is a flexible material Made by. The anti-shake module as described in item 3 of the patent application scope further includes a driving unit and a control unit, the driving unit is connected to the moving part, and the control unit controls the driving unit to operate so that the moving part generates a corresponding Movement to offset the tremor. The anti-shake module described in item 5 of the patent application scope, wherein the first connection portion is connected to the drive unit, and the second connection portion is connected to the control unit. The anti-shake module as described in item 6 of the patent application range, wherein the drive unit is a voice coil motor and includes a coil, and the first connection portion is connected to the coil. The anti-shake module as described in item 6 of the patent application scope, wherein the driving unit is a magnet and includes a coil and a Hall element corresponding to the magnet, and the first connection portion is connected to the magnet, the coil and At least one of the Hall elements. An optical device includes: a photosensitive unit; a lens unit that receives image light of a target and then forms an image on the photosensitive unit; and an anti-shake module as described in item 3 of the patent application scope, the photosensitive unit is provided On the mobile part. An optical device includes: a photosensitive unit; a lens unit that receives image light of an object and then forms an image on the photosensitive unit, the lens unit includes a movable lens; and a hand guard as described in item 3 of the patent application In the vibration module, the movable lens is arranged on the moving part.