CN208752322U

CN208752322U - Optical system

Info

Publication number: CN208752322U
Application number: CN201820837575.2U
Authority: CN
Inventors: 胡朝彰; 黄绍光; 陈树山; 翁智伟
Original assignee: TDK Taiwan Corp
Current assignee: TDK Taiwan Corp
Priority date: 2017-06-13
Filing date: 2018-05-31
Publication date: 2019-04-16
Anticipated expiration: 2028-05-31
Also published as: CN109089020B; CN208158722U; CN109089020A

Abstract

Present disclose provides a kind of optical systems, include a fixed part, a movable part, a sensing unit and a driving assembly.Fixed part includes a pedestal, and movable part includes an optical element load-bearing part, is configured to carry an optical element.Sensing unit configuration rotates angle and around the information of one second one second axial rotation angle around the one first of a first axis relative to pedestal about optical element load-bearing part to obtain.Driving assembly includes that a coil, coil and movable part are arranged along the optical axis direction for being parallel to optical element, and coil is set to around an aperture of pedestal.Wherein first axis or second it is axially perpendicular to optical axis direction.

Description

Optical system

Technical field

The utility model relates to a kind of optical systems, in particular to one kind can compensate static posture difference and dynamic posture is poor Optical system.

Background technique

With the development of science and technology, many electronic devices (such as smart phone or tablet computer) all have photograph or record now The function of shadow.By the photographing module being set on electronic device, it is all kinds of to obtain that user can operate electronic device Photo.

In general, the photographing module that aforementioned electronic can often cause it internal because of vibration when in use shakes, hold Easily cause the image blur of shooting unclear.Therefore, the photographing module of aforementioned electronic can have auto-focusing and optics The function of anti-hand shake.When auto-focusing, Inside coil can act on after being powered with corresponding magnet generation, so that solid with coil Fixed lens bearing seat can be mobile to achieve the effect that auto-focusing along the optical axis direction (i.e. Z-direction) of camera lens, and can also Electromagnetic induction is generated by corresponding to the coil and magnet of X-axis and Y-axis respectively, (is corrected with adjusting camera lens to correct position Optical axis is in the horizontal-shift of X-axis and Y direction), it just can thus reach shockproof effect and can get preferred image quality.

However, existing electronic device is when in use, the sloshing mode of internal lens driving apparatus is actually more multiple It is miscellaneous, it is not limited solely to vertically shift with horizontal direction.Therefore it provides a kind of shockproof effect more preferably electronics fills It sets, is worth discussion now and the project solved.

Utility model content

In view of this, the disclosure proposes a kind of optical system, to solve the above problem.

Embodiment of the disclosure discloses a kind of optical system, comprising a fixed part, a movable part, a sensing unit and One driving assembly.Fixed part includes a pedestal, and movable part includes an optical element load-bearing part, and configuration is to carry optics member Part.Sensing unit configuration with obtain about optical element load-bearing part with respect to pedestal around a first axis one first rotate angle with And the information around one second one second axial rotation angle.Driving assembly includes a coil, and coil is with movable part along parallel It is arranged in an optical axis direction of optical element, and coil is set to around an aperture of pedestal.Wherein first axis or second It is axially perpendicular to optical axis direction.

According to some embodiments of the present disclosure, driving assembly configuration is according to about the first rotation angle and the second rotation angle The information of degree generates a driving force, drives optical element load-bearing part around first axis or the second axial-rotation whereby.

According to some embodiments of the present disclosure, optical system also includes an elastic element and a frame, elastic element packet Containing ring portion in an internal ring portion, one and an outer portion, internal ring portion connects optical element load-bearing part, middle ring portion connection framework, outer ring Portion connecting portion；Wherein internal ring portion and middle ring portion are relative to outer portion around first axis or the second axial-rotation.Wherein inner ring Portion is with middle ring portion relative to outer portion around first axis or the second axial-rotation.

According to some embodiments of the present disclosure, pedestal has a rectangular configuration, and the corner of pedestal is arranged in driving assembly.

According to some embodiments of the present disclosure, fixed part also includes a fixed frame, and optical system also includes a frame, Gu Determine frame and frame partly overlaps along optical axis direction.First axis is with second axially through optical element load-bearing part.

According to some embodiments of the present disclosure, driving assembly also includes a driving coil, is set to optical element load-bearing part Around.According to some embodiments of the present disclosure, driving assembly also includes two magnetic elements, is set to optical element load-bearing part Side, and coil is set to side and is located between two magnetic elements.According to some embodiments of the present disclosure, driving assembly is produced A raw driving force, is parallel to optical axis direction.

According to some embodiments of the present disclosure, optical system also includes an optical axis adjustment element, and configuration is with by an incident light Steering is parallel to optical axis direction, and optical axis adjustment element and pedestal are arranged along optical axis direction, and incident light and optical axis direction are uneven Row.According to some embodiments of the present disclosure, pedestal is set between movable part and optical axis adjustment element.

The disclosure provides a kind of optical system, includes a sensing unit, a driving assembly and a control unit.Work as optics When element load-bearing part generates inclination relative to Image Sensor (such as optical system is shaken or mechanism tolerances cause), The optical axis of optical element load-bearing part may not aligned with the optical axis of Image Sensor.At this point, sensing unit can get optics Element load-bearing part rotates angle around the first of first axis and/or around the relevant information of second the second axial rotation angle, connects Control unit can according to this information control driving assembly with drive optical element load-bearing part rotate, and then reach compensation inclination The purpose of angle.

In some embodiments of the disclosure, optical element load-bearing part has rectangular configuration, and the first of driving assembly Magnetic element and the second magnetic element are four sides for being set to optical element load-bearing part.It configures through this structure, driving group Part can provide biggish electromagnetic driving force to push optical element load-bearing part mobile or drive optical element load-bearing part and frame phase Fixed part is rotated.In the other embodiments of the disclosure, when optical system needs to carry biggish optical element, optics Element load-bearing part may be designed as with rectangular configuration, and the first magnetic element of driving assembly and the second magnetic element are settings In four corners of optical element load-bearing part, optical element load-bearing part is allow to carry biggish optical element whereby.

In addition, in certain embodiments, the design of the disclosure is also applicable in the optical system of periscopic.In these implementations Example in, since plate coil is set between optical element load-bearing part and pedestal, optical system along Z-direction height Degree can reduce, and achieve the purpose that micromation whereby.In addition, in other embodiments, pedestal and plate coil are to be set to light Between axial adjustment element (reflecting mirror) and optical element load-bearing part.It configures through this structure, optics can be further reduced The length of system, further achievees the purpose that micromation.

Middle disclosure will be explained below in additional features and benefits in the disclosure, and part can be by aftermentioned specification It has a clear understanding of, or can be learnt by disclosed principle via practice.The features and benefits of the disclosure can be special by institute herein The combination of the instrument or device do not pointed out and realize and obtain.These and other features of the disclosure can by aftermentioned specification and It becomes more apparent upon or can be learnt as the principle disclosed in the disclosure via practice.

Preferably, the utility model discloses a kind of optical system, includes:

One fixed part includes a pedestal；

One movable part includes an optical element load-bearing part, configures to carry an optical element；

One sensing unit, configuration is to obtain about the optical element load-bearing part with respect to the pedestal one the around a first axis One rotation angle and the information for rotating angle around one second axial one second；And

One driving assembly includes a coil, and the coil and the movable part are along the optical axis side for being parallel to the optical element To arrangement, and the coil is set to around an aperture of the pedestal；

Wherein, the first axis or this second be axially perpendicular to the optical axis direction.

Preferably, driving assembly configuration according to the information about the first rotation angle and the second rotation angle to produce A raw driving force, drives the optical element load-bearing part around the first axis or second axial-rotation whereby.

Preferably, which also includes an elastic element and a frame, which includes an internal ring portion, one Middle ring portion and an outer portion, the internal ring portion connect that the optical element load-bearing part, ring portion connects the frame in this, which connects Connect the fixed part；

Wherein, the internal ring portion and this in ring portion relative to the outer portion around the first axis or second axial-rotation.

Preferably, which has a rectangular configuration, and the corner of the pedestal is arranged in the driving assembly.

Preferably, which also includes a fixed frame, and the optical system is more wrapped also comprising a frame, the fixed frame with The frame overlaps folded along the optical axis direction part.

Preferably, the first axis and this second axially through the optical element load-bearing part.

Preferably, which also includes a driving coil, is set to around the optical element load-bearing part.

Preferably, which also includes two magnetic elements, is set to the side of the optical element load-bearing part, and should Coil is set to the side and between two magnetic element.

Preferably, which generates a driving force, is parallel to the optical axis direction.

Preferably, which also includes an optical axis adjustment element, and configuration is to be parallel to the light for incident light steering Axis direction, the optical axis adjustment element and the pedestal are arranged along the optical axis direction, and the incident light and the optical axis direction are not parallel.

Preferably, which is set between the movable part and the optical axis adjustment element.

Detailed description of the invention

Fig. 1 is the schematic diagram of an optical system of one embodiment of the disclosure.

Fig. 2 is the element explosive view of the optical system of one embodiment of the disclosure.

Fig. 3 shows the sectional axonometric drawing of the A-A ' line segment along Fig. 1.

Fig. 4 is the top view of the optical system of an embodiment of the disclosure.

Fig. 5 is the subelement sectional axonometric drawing of the optical system 100 ' of another embodiment of the disclosure.

Fig. 6 indicates the signal of the optical element load-bearing part, pedestal and an Image Sensor of the embodiment according to Fig. 1 Figure.

Fig. 7 is the schematic diagram indicated according to the amount of movement that sensing unit senses in the optical system of the embodiment of the present disclosure.

Fig. 8 shows optical element load-bearing parts in embodiment according to fig. 2 to be located at different location relative to Image Sensor Schematic diagram.

Fig. 9 is the explosive view according to an optical system of another embodiment of the disclosure.

Figure 10 and Figure 11 is the subelement top view according to the optical system of the embodiment of Fig. 9.

Figure 12 is the schematic diagram of an optical system of another embodiment of the disclosure.

Figure 13 is the element explosive view of the optical system of another embodiment of the disclosure.

Figure 14 shows the sectional view of the C-C ' line segment along Figure 10.

Figure 15 is the side schematic view of an optical system of another implementation of the disclosure.

Figure 16 is the side schematic view of an optical system of another implementation of the disclosure.

Description of symbols:

100,100 ', 100A, 100B optical system

102 upper covers

1021 opening in shell

1023 accommodating spaces

103 fixed frames

1031 openings

104 frames

1041 openings

1043 grooves

1045 grooves

104B frame

104P protrusion

104S inner wall

106 upper reed plates

The electrical junction 106C

1061 outer portions

Ring portion in 1062

1063 internal ring portions

1064 interconnecting pieces

1065 interconnecting pieces

108 optical element load-bearing parts

1081 through holes

110 lower reeds

1101 outer portions

Ring portion in 1102

1103 internal ring portions

1104 interconnecting pieces

112 pedestals

1121 holes on base

1122 accommodation grooves

114 circuit boards

1141,1143 electrical contact

115 Image Sensors

118 circuit plates

1181 flutings

150 control units

160 processors

170 storage units

200,200A optical system

208 optical element load-bearing parts

212 pedestals

218 circuit plates

250 optical axis adjustment elements

Ad angle

As angle

Ag1 first rotates angle

Ag2 second rotates angle

AM magnet

Ax first axis

Ay second is axial

D1, d2 distance

Dm displacement

DCL driving coil

F1, F2, Fx, Fy, Fz electromagnetic driving force

H height

L incident light

L ' reflected light

Ly length

The first magnetic element of MEG1

The second magnetic element of MEG2

MEG3 magnetic element

O optical axis

Os optical axis

The first sensor of SR1

The second sensor of SR2

SR3 third sensor

Z1~Z4, Za vector

Zc1, Zc2 uncompensation distance

Specific embodiment

In order to which purpose, feature and the advantage of the disclosure can be clearer and more comprehensible, special embodiment below, and appended by cooperation Diagram elaborates.Wherein, each element in embodiment is configured to purposes of discussion, not to limit the disclosure.And it is real The part for applying drawing reference numeral in example repeats, to simplify the explanation, the relevance being not meant as between different embodiments.Implement below The direction term being previously mentioned in example, such as: upper and lower, left and right, front or rear etc. are only the directions with reference to attached drawings.Therefore, make Direction term is intended to be illustrative and not intended to limit the disclosure.

In addition, the term of relativity, such as " lower " or " bottom " and " higher " or " top " may be used in embodiment, To describe relativeness of the element for another element of diagram.It is appreciated that, if the device overturning of diagram made It turns upside down, then the element described in " lower " side will be as the element in " higher " side.

Here, the term of " about ", " about " is generally represented within the 20% of a given value or range, preferably 10% it It is interior, and within preferably 5%.Given quantity is quantity about herein, implies that in the case where no certain illustrated, still may be used The meaning of implicit " about ", " about ".

Fig. 1 to Fig. 3 is please referred to, Fig. 1 is the schematic diagram of an optical system 100 of one embodiment of the disclosure, and Fig. 2 is the disclosure The element explosive view of the optical system 100 of one embodiment, and Fig. 3 shows the sectional axonometric drawing of the A-A ' line segment along Fig. 1.Optical system System 100 can be the camera system with a driving assembly, to carry an optical element (a such as camera lens, figure in do not indicate), And optical system 100 is to be mountable to various electronic devices or portable electronic device (such as smart phone or lithographic plate computer), The function of image capturing is executed for user.In this embodiment, the driving component can be to have auto-focusing (AF) function Voice coil motor (VCM), but not limited to this.In some embodiments, it may be provided with automatic right for the driving assembly of optical system 100 Burnt (Auto Focusing, AF), poor (statictilt) compensation function of static posture and the poor (dynamic of dynamic posture Tilt) compensation function.

Furthermore as shown in Figure 1, optical system 100 also may include a control unit 150, wherein may include a processor 160 An and storage unit 170.In this embodiment, processor 160 can be a microprocessor, and storage unit 170 can be to appoint The storage media (may be, for example, random access memory memory) of what form, to store the data about optical system 100.Control Processor 160 in unit 150 processed is to be configurable to control aforementioned driving assembly according to the data in storage unit 160.Control Unit 150 processed is not limited to the mode of above-mentioned implementation, for example, control unit 150 can also be a control chip.

Fig. 1 be please also refer to Fig. 3.In this embodiment, as shown in Fig. 2, optical system 100 includes a upper cover 102, one Fixed frame 103, a frame 104, a upper reed plate 106, an optical element load-bearing part 108, a driving coil DCL, once reed 110, multiple first magnetic element MEG1, multiple second magnetic element MEG2, a sensing unit, a circuit board 114, One circuit plate 118 and a pedestal 112 (control unit 150 is omitted in Fig. 2).Wherein, fixed frame 103, upper cover 102, electricity Road plate 114, circuit plate 118 and pedestal 112 are to may be defined as a fixed part.Wherein, fixed frame 103 is to can be fixedly connected to Circuit plate 118 and circuit board 114, such as in the way of gluing, but not limited to this.Furthermore optical element load-bearing part 108 with And frame 104 may be defined as a movable part, move relative to the fixed part.

As shown in Fig. 2, aforementioned shell 102 has a hollow structure, and it is formed with an opening in shell 1021, pedestal thereon A holes on base 1121 is formed on 112, the center of opening in shell 1021 corresponds to what optical element load-bearing part 108 was carried The optical axis O of one optical element (not shown), and holes on base 1121 corresponds to that the image sensing below pedestal 112 is arranged in Element (not shown).Shell 102 can have an accommodating space 1023, to accommodate aforementioned upper reed plate 106, fixed frame 103, Frame 104, optical element load-bearing part 108, driving coil DCL, those second magnetic elements MEG2, circuit plate 118 and electricity Road plate 114.In this embodiment, driving coil DCL, those the first magnetic element MEG1 and correspond to the first magnetic element Those second magnetic elements MEG2 of MEG1 may be defined as driving assembly above-mentioned, and driving assembly is electrically coupled to circuit board 114 and can drive optical element load-bearing part 108 relative to frame 104 move.Such as it can be moved along the direction optical axis O or around upper spring The axial direction Ay of a first axis Ax and one second between piece 106 and lower reed 110 rotates (Fig. 3).

As shown in Fig. 2, optical element load-bearing part 108 has a hollow annular structure, and there is pass through aperture 1081, It is configured with corresponding sealed screwed tooth structure (not shown) between middle through hole 1081 and the optical element, the optics member can be enabled Part is locked in through hole 1081.Furthermore as shown in Fig. 2, in this embodiment, frame 104 has an opening 1041 and more A multiple grooves 1043, opening 1041 are configurations to accommodate optical element load-bearing part 108, and those grooves 1043 be configuration with Accommodate aforementioned four the second magnetic element MEG2.However, the quantity reality without being limited thereto of groove 1043 and the second magnetic element MEG2 Apply example.In this embodiment, the shape of the second magnetic element MEG2 can be strip, but not limited to this, such as in other implementations There can be different shapes in example.In addition, the second magnetic element MEG2 can be a multipole magnet.

(upper cover 102 is omitted in Fig. 3) as shown in Figure 2 and Figure 3, driving coil DCL is to be set to optical element load-bearing part Around 108 and correspond to four the second magnetic element MEG2.When driving coil DCL is powered, four the second magnetic elements MEG2 can generate an electromagnetic driving force with driving coil DCL, drive optical element load-bearing part 108 relative to 104 edge of frame whereby Optical axis O (Z-direction) is mobile, to carry out auto-focusing (Auto Focusing).In addition, as shown in Figure 2 and Figure 3, first is magnetic Element MEG1 can be a plate coil, be set in circuit plate 118 and correspond to the second magnetic element MEG2.In the disclosure Design in, only a second magnetic element MEG2 need to be set can correspond to driving coil DCL and the first magnetic element simultaneously MEG1, therefore the quantity of element in optical system 100 can be reduced and reduce manufacturing cost.Furthermore, it is notable that those One magnetic element MEG1 (being contained in circuit plate 118) and optical element load-bearing part 108 are arranged along the direction of optical axis O Column, and those first magnetic elements MEG1 is set to around the holes on base 1121 of pedestal 112.

In this embodiment, circuit board 114 can be a flexible circuit board (Flexible Printed Circuit, FPC), But not limited to this.As shown in Figures 1 and 2, circuit board 114 has multiple electrical contacts 1143, configures above-mentioned to connect The main circuit board (not shown) and control unit 150 of electronic device.In addition, circuit plate 118 is to be set to circuit board On 114, and the first magnetic element MEG1 is electrically coupled to circuit board 114.Furthermore circuit board 114 can also include four electricity Property contact 1141, and upper reed plate 106 can have there are four electrical junction 106C, be respectively connected to four electrical contacts 1141.

As shown in Figure 2 and Figure 3, in this embodiment, sensing unit be may include two the first sensor SR1, two A two sensor SR2 and third sensor SR3.Those the first sensor SR1 are that can be fixedly disposed with the second sensor SR2 In in the accommodation groove 1122 of pedestal 112, but not limited to this, such as may also set up in corresponding to the first magnetic member on circuit board 114 The position of part MEG1.Furthermore as shown in Fig. 2, the first magnetic element MEG1 in the projection on pedestal 112 be surrounded on it is corresponding First sensor SR1 or the second sensor SR2.Those the first sensor SR1 and the second sensor SR2 are that configuration is opposite to sense The movement of the second magnetic element MEG2 answered.In addition, third sensor SR3 is one jiao for being set to optical element load-bearing part 108 It falls, configures to sense a magnet A M, wherein magnet A M is fixedly arranged on frame 104, corresponds to optical element load-bearing part Third sensor SR3 on 108 aforementioned corner.The setting position embodiment without being limited thereto of magnet A M and third sensor SR3. In this embodiment, the first sensor SR1, the second sensor SR2 or a third sensor SR3 can be a magnetic field sensing element, For example, Hall sensor (Hall effect sensor), mistor sensor (MR sensor) or magnetic flux sensor (Fluxgate) etc., but not limited to this.

In this embodiment, optical element load-bearing part 108 and aforementioned optical element are to be set in frame 104 and can be opposite It is mobile in frame 104.More specifically, as shown in figure 3, optical element load-bearing part 108 is can be by upper reed plate 106 and lower spring Piece 110 is connected to frame 104 and is suspended in frame 104, and optical element load-bearing part 108 and frame 104 are by upper spring Piece 106 is suspended in fixed frame 103.In this embodiment, upper reed plate 106 and lower reed 110 can be an elastic element, and Upper reed plate 106 can have ring portion 1062 in an outer portion 1061, one, an internal ring portion 1063, multiple interconnecting pieces 1064 and connection Portion 1065.Internal ring portion 1063 is fixedly attached to optical element load-bearing part 108, and middle ring portion 1062 is fixedly attached to frame 104, and outer portion 1061 is fixedly attached to fixed frame 103.Furthermore internal ring portion 1063 is by multiple interconnecting pieces 1065 It is connected to middle ring portion 1062, and middle ring portion 1062 is to be connected to outer portion 1061 by multiple interconnecting pieces 1064.

In addition, lower reed 110 has an outer portion as shown in Fig. 2, the structure of lower reed 110 is similar to upper reed plate 106 1101, ring portion 1102, an internal ring portion 1103 and multiple interconnecting pieces 1104 in one, outer portion 1101 is by multiple interconnecting pieces 1104 are connected to middle ring portion 1102, and middle ring portion 1102 is to be connected to internal ring portion 1103 by multiple interconnecting pieces 1104.In this In embodiment, internal ring portion 1103 is fixedly attached to optical element load-bearing part 108, and middle ring portion 1102 is fixedly attached to frame Frame 104, and outer portion 1101 is fixedly attached to fixed frame 103.

It is worth noting that, outer portion 1061, middle ring portion 1062 and internal ring portion 1063 compared to multiple interconnecting pieces 1064 with Multiple interconnecting pieces 1065 have biggish coefficient of elasticity, therefore feel when driving coil DCL is powered with the second magnetic element MEG2 Should generate electromagnetic drive power drive optical element load-bearing part 108 it is mobile along optical axis O (Z-direction) relative to frame 104 when, can be true Protecting optical element load-bearing part 108 will not rotate relative to frame 104 easily.Furthermore lower reed 110 is configuration to assist optics Element load-bearing part 108 is more stably suspended in frame 104.In other embodiments, optical system can also omit lower reed 110 Configuration.

In addition, in this embodiment, as shown in figure 3, can define between upper reed plate 106 and lower reed 110 has a first axle To the axial direction Ay of Ax and one second, it is respectively parallel to X-direction and Y direction, and first axis Ax and the second axial direction Ay is Perpendicular to optical axis O.More specifically, the axial direction of first axis Ax and second Ay is to crisscross optical axis O.It is worth noting that, first The axial direction of axial Ax and second Ay is by optical element load-bearing part 108.

It is the top view of the optical system 100 of an embodiment of the disclosure next referring to Fig. 3 and Fig. 4, Fig. 4.In order to clear Chu indicates, the subelement of optical system 100 is only indicated in Fig. 4.As shown in Figure 3 and Figure 4, control unit 150 can only control edge Y direction arrangement two the first magnetic element MEG1 and the second magnetic element MEG2, to generate two electromagnetic driving forces Fy.Wherein, electromagnetic driving force Fy size is identical and direction is identical (towards Y direction).As shown in figure 4, due to optical element Load-bearing part 108 and frame 104 are to be connected to internal ring portion 1063 and middle ring portion 1062, therefore drive when by two electromagnetism When power Fy is pushed, optical element load-bearing part 108 and frame 104 will receive the limit of internal ring portion 1063 and middle ring portion 1062 System, so that frame 104 and optical element load-bearing part 108 are rotated relative to fixed part (fixed frame 103) around first axis Ax.Meaning That is, internal ring portion 1063 and middle ring portion 1062 are to rotate around first axis Ax relative to outer portion 1061.

Similarly, as shown in figure 4, control unit 150 can only control two the first magnetic elements arranged along X-direction MEG1 and two the second magnetic element MEG2, to generate two electromagnetic driving force Fx.Wherein, electromagnetic driving force Fx size is identical And direction is identical (direction-X-direction).As shown in figure 4, two electromagnetic driving force Fx can drive internal ring portion 1063 and middle ring Portion 1062 is rotated around the second axial direction Ay relative to outer portion 1061.This means, electromagnetic driving force Fx drives frame 104 and optics member Part load-bearing part 108 is rotated around the second axial direction Ay relative to fixed part (fixed frame 103).It is worth noting that, aforementioned electromagnetic drives The direction of power Fx and electromagnetic driving force Fy can only control driving assembly production with the contrary or control unit 150 in Fig. 4 Raw single a a electromagnetic driving force Fy of electromagnetic driving force Fx or single is opposite to drive optical element load-bearing part 108 and frame 104 It is rotated in fixed frame 103.

Referring to FIG. 5, Fig. 5 is the subelement sectional axonometric drawing of the optical system 100 ' of another embodiment of the disclosure.Such as Shown in Fig. 5, optical system 100 ' is similar to optical system 100, when difference is to watch along optical axis direction, 103 meeting of fixed frame It partly overlaps with frame 104.Specifically, as shown in figure 5, frame 104 can have, there are four protrusion 104P (since visual angle is closed System only indicates two protrusion 104P in figure), and fixed frame 103 can corresponding tool there are four openings 1031, to accommodate protrusion Portion 104P.It designs through this structure, optical system 100 ' can further reduce the width of X-direction and Y direction, to reach To the purpose of micromation.

Please continue to refer to the figure of the 2nd, 3 and 6, Fig. 6 indicates optical element load-bearing part 108, the pedestal of the embodiment according to Fig. 1 112 and one Image Sensor 115 schematic diagram.When optical system 100 be installed on aforementioned main circuit board and it is inactive before, light The optical axis O of element load-bearing part 108 is possible will be not parallel with an optical axis Os of Image Sensor 115, such as optical axis O and light It will form an included angle A s (tilt angle) between axis Os.It is poor (static tilt) that such case is known as static posture, and can make The image obtained at Image Sensor 115 is not clear enough.Therefore, poor in order to compensate for this static posture, control unit 150 is controllable Driving assembly processed generates electromagnetic driving force so that optical element load-bearing part 108 is rotated clockwise relative to first axis Ax, whereby Compensate inclined included angle A s.

The figure of the 2nd, 3 and 7 is please referred to, Fig. 7 is to indicate to sense according to sensing unit in the optical system 100 of the embodiment of the present disclosure The schematic diagram of the amount of movement arrived.In this embodiment, the size of vector Z 1 and vector Z 2 respectively represents two the first sensor SR1 Corresponding second magnetic element MEG2 is sensed along the displacement of Z-direction, and the size of vector Z 3 and vector Z 4 is distinguished It represents two the second sensor SR2 and senses corresponding second magnetic element MEG2 along the displacement of Z-direction.Vector Z a Size represent the displacement that third sensor SR3 senses magnet A M.

In this embodiment, the size of vector Z 1 is less than vector Z 2, and the size of vector Z 3 is less than vector Z 4.In It is that control unit 150 can be obtained according to the size of vector Z 1 to vector Z 4 about optical element load-bearing part 108 and frame 104 Angle is rotated or around the second axial direction Ay's around the one first of first axis Ax relative to fixed part (fixed frame 103 or pedestal 112) The information of one second rotation angle.For example, by between two the second magnetic element MEG2 along the distance in Y direction The stool and urine of d1, vector Z 3 and vector Z 4 can calculate the first rotation angle Ag1 (according to trigonometric function formula).Then, it controls Unit 150 can be driven according to the information obtained about the first rotation angle optical element load-bearing part 108 and frame 104 around First axis Ax overturning.That is, the driving assembly that the control of control unit 150 corresponds to vector Z 3 generates an electromagnetic driving force Towards Z-direction, it is rotated to move a uncompensation distance Zc1 to control optical element load-bearing part 108 and frame 104, wherein Z4= Z3+Zc1。

Similarly, control unit 150 can also be obtained according to the size of vector Z 1 and vector Z 2 optical element load-bearing part 108 around The second rotation angle Ag2 of second axial direction Ay, and accordingly drive the rotation of optical element load-bearing part 108 to compensate the second rotation angle Degree.In this embodiment, control unit 150 can according between two the second magnetic element MEG2 along the distance in X-direction The stool and urine of d2, vector Z 1 and vector Z 2 can calculate the second rotation angle Ag2 (according to trigonometric function formula).Then, it controls Unit 150 can drive optical element load-bearing part 108 axial around second according to the information obtained about the second rotation angle Ay overturning.That is, the driving assembly that the control of control unit 150 corresponds to vector Z 1 generates an electromagnetic driving force towards Z axis Direction is rotated to move a uncompensation distance Zc2 to control optical element load-bearing part 108 and frame 104, wherein Z2=Z1+Zc2. After optical element load-bearing part 108 and frame 104 are rotated by both of the aforesaid electromagnetic drive power drive, optical element load-bearing part 108 optical axis O can be aligned with the optical axis Os (Fig. 6) of Image Sensor 115, and then achieve the purpose that compensation posture is poor.

It is worth noting that, the storage unit 170 of control unit 150, which can be previously stored with an angle displacement, corresponds to table.? In this embodiment, it may include the first rotation angle, the second rotation angle and corresponding uncompensation distance that angle displacement, which corresponds to table, Tables of data.For example, when control unit 150 judge optical element load-bearing part 108 have first rotation angle Ag1 and/or When the second rotation angle Ag2, control unit 150 can correspond to after table direct controlling and driving component with reference to angle displacement to drive light It learns element load-bearing part 108 and is rotated to move corresponding uncompensation distance Zc1 and/or uncompensation distance Zc2.

In addition, control unit 150 can also be stored with the start information about optical element load-bearing part 108, wherein starting letter The location information and angle information of optical element load-bearing part 108 when breath is comprising non-actuation.For example, such as shown in Fig. 7, position Confidence breath for example may include the vector Z a in Fig. 7, and angle information for example may include the rotation of the first rotation angle Ag1 or second Angle A g2.Then, when optical system 100 1 starts, control unit 150 can be vertical according to location information and angle information Optical element load-bearing part 108 is compensated, so that the optical axis O of optical element load-bearing part 108 is first to image sensing is located at The optical axis Os of part 115.This means, control unit 150 can soon compensate static posture difference when optical system 100 starts Program.

Referring to FIG. 8, Fig. 8 shows optical element load-bearing parts 108 in embodiment according to fig. 2 relative to Image Sensor 115 are located at the schematic diagram of different location.As shown in figure 8, optical element load-bearing part 108 is driven when moving along Z-direction, It is poor (dynamic tilt) that dynamic posture may be led to the problem of.For example, when optical element load-bearing part 108 is by position P1 When being moved to position P2, optical element load-bearing part 108 is tilted in position P2, so that shape has angle between optical axis O and optical axis Os Ad.For this purpose, control unit 150 can also be stored with the dynamic about movable part (such as optical element load-bearing part 108 and frame 104) Information, it includes the change in location information and angle change information of the movable part in a preset range actuation.This means, dynamic is believed Breath comprising optical element load-bearing part 108 along in Z-direction when each position with the information of corresponding angle.Wherein, predetermined model It encloses and is defined as ensuring the range that optical element load-bearing part 108 can be effectively controlled in driving assembly.For example, in fig. 8, position The upper limit position that P1 is preset range is set, when the position of optical element load-bearing part 108 is lower than position P1, it can be ensured that drive Dynamic component can be effectively controlled optical element load-bearing part 108.

Therefore, the design of the multidate information about movable part is previously stored based on control unit 150, when optical element is held Holder 108 is moved along Z-direction when different location generates dynamic posture difference, and control unit 150 can control in real time Driving assembly is poor to compensate this dynamic posture, so that optical axis O can be to positioned at optical axis Os.Moreover, it is noted that single in control When member 150 compensates dynamic posture difference, a certain position of optical element load-bearing part 108 is may be selected as a reference in control unit 150 Datum mark.For example, as shown in figure 8, optical element is held when optical element load-bearing part 108 is located at highest point (position P1) The optical axis O of holder 108 is to the optical axis Os for being located at Image Sensor 115, therefore 150 selectable position P1 of control unit is as ginseng Datum mark is examined, then the optical element load-bearing part 108 for being located at other positions is compensated again.

Referring to FIG. 9, Fig. 9 is the explosive view according to an optical system 100A of another embodiment of the disclosure.This embodiment Optical system 100A it is similar to optical system 100, the difference of the two is: four the second magnetic element MEG2 have triangular prism Body structure, and pedestal 112 has a rectangular configuration.Four the second magnetic element MEG2 are the inner walls for being set to frame 104 The corner of face 104S.In addition, four the first magnetic element MEG1, two the first sensor SR1 and two the second sensors SR2 is set to the position of corresponding those second magnetic elements MEG2.This means, driving assembly and sensing unit are to be set to pedestal On 112 corner.

Please also refer to Fig. 9 to Figure 11, Figure 10 and Figure 11 is the part member according to the optical system 100A of the embodiment of Fig. 9 Part top view.As shown in Figure 10, the first magnetic element MEG1 and the second magnetic element MEG2 in the upper left corner and the lower right corner generate two A electromagnetic driving force F1, and two electromagnetic driving force F1 have the same direction.First magnetic element in the lower left corner and the upper right corner MEG1 and the second magnetic element MEG2 generates two electromagnetic driving force F2, has the same direction, and electromagnetic driving force F1's is big It is small identical as electromagnetic driving force F2 size.Since the direction of electromagnetic driving force F1 and the resultant force of electromagnetic driving force F2 is along X-axis Direction, thus this can drive with joint efforts frame 104 and optical element load-bearing part 108 around the second axial direction Ay relative to fixed part (Gu Determine frame 103) rotation.

Similarly, as shown in figure 11, the direction phase of the electromagnetic driving force F2 in electromagnetic driving force F2 and Figure 10 in Figure 11 Instead, therefore the direction of the resultant force of electromagnetic driving force F1 and electromagnetic driving force F2 is along-Y direction, therefore this can drive with joint efforts Frame 104 and optical element load-bearing part 108 are rotated around first axis Ax relative to fixed frame 103.Therefore, control unit 150 Optical element load-bearing part 108 and frame 104 can be controlled by adjusting the direction of electromagnetic driving force F1 and electromagnetic driving force F2 Direction of rotation.

Then, it is similar to the optical system 100 of previous embodiment, when optical element load-bearing part 108 and frame 104 tilt When, control unit 150 can be according to those the first sensor SR1 and the second sensor SR2 the first rotation angle obtained and the Two rotate the information of angles to carry out inclined compensation.The control optical element load-bearing part 108 and frame 104 of control unit 150 Rotation is similar to previous embodiment to carry out the method for inclined compensation, therefore details are not described herein.

Figure 12 to Figure 14 is please referred to, Figure 12 is the schematic diagram of an optical system 100B of another embodiment of the disclosure, Figure 13 For the element explosive view of the optical system 100B of another embodiment of the disclosure, and Figure 14 shows the section of the C-C ' line segment along Figure 10 Figure.As shown in figure 13, the optical system 100B of this embodiment is similar to optical system 100, and the difference of the two is: optical system There are four grooves 1045 for the inside tool of a frame 104B of 100B, configure to accommodate four the second magnetic element MEG2.In addition, light The driving assembly of system 100B can include also multiple magnetic element MEG3, be set to the week of optical element load-bearing part 108 It encloses.In this embodiment, driving assembly may include eight magnetic element MEG3, be respectively arranged at 108 bottom of optical element load-bearing part Four sides in portion, wherein every two magnetic element MEG3 is the wherein side for being set to 108 bottom of optical element load-bearing part.

As shown in figures 13 and 14, circuit plate 118 can more there are four fluting 1181, outermost magnetic element MEG3 It is configuration to be connected to circuit board 114 across fluting 1181, and as shown in figure 14, the first magnetic element MEG1 (coil) is Between corresponding two magnetic element MEG3.In addition, two the first sensor SR1 and two the second sensor SR2 It is the lower section for being set to those magnetic elements MEG3.For example, as shown in figure 14, the second sensor SR2 is to be located at outermost Magnetic element MEG3 lower section, and the second sensor SR2 is configured to sense the displacement of corresponding magnetic element MEG3.

It is similar to previous embodiment, when driving coil DCL is powered, four the second magnetic element MEG2 meetings and driving coil DCL generates an electromagnetic driving force, and optical element load-bearing part 108 is driven to move relative to frame 104 along optical axis O (Z-direction) whereby It is dynamic, to carry out auto-focusing (Auto Focusing).In addition, the first magnetic element MEG1 can lead to when slope compensation to be carried out Electricity generates a driving force for being parallel to optical axis O with magnetic element MEG3, drives optical element load-bearing part 108 and frame 104 whereby It is rotated relative to fixed frame 103.

For example, as shown in figure 14, control unit 150 is provided to two first magnetism along Y direction arrangement Element MEG1 electric power, the received size of current of two of them the first magnetic element MEG1 is identical but opposite in phase.Therefore, such as Figure 14 Shown, the first magnetic element MEG1 and magnetic element MEG3 in left side induction generate an electromagnetic driving force Fz, towards Z-direction, And the electromagnetic driving force Fz that the first magnetic element MEG1 and magnetic element the MEG3 induction on right side generate is towards-Z-direction.In It is that optical element load-bearing part 108 and frame 104 will be driven around first axis Ax by two electromagnetic driving force Fz relative to fixation Frame 103 rotates.

Similarly, if control unit 150 only provides electrical power to two the first magnetic elements arranged along X-direction MEG1, then its electromagnetic driving force generated can drive optical element load-bearing part 108 and frame 104 to rotate around the second axial direction Ay.

It is worth noting that, the first magnetic element MEG1 that control unit 150 can also only control left side is generated in Figure 14 The electromagnetism along Z-direction is generated along the first magnetic element MEG1 of the electromagnetic driving force Fz of Z-direction, or control left side The first magnetic element MEG1 that driving force is greater than right side generates the electromagnetic driving force along Z-direction.Thus also it can reach Optical element load-bearing part 108 and frame 104 are driven into the purpose rotated around first axis Ax relative to fixed frame 103.

In addition, the second magnetic element MEG2 and driving coil DCL of optical system 100B can be saved in other embodiments Slightly, and control unit 150 can control four sizes of four the first magnetic element MEG1 and magnetic element MEG3 generation identical and The identical electromagnetic driving force in direction (direction that the direction of this electromagnetic driving force is parallel to optical axis O), so that optical element carries Part 108 can be forced to move along Z-direction.Configuration in this way can further decrease the manufacture of optical system 100B Cost.

Furthermore it is similar to previous embodiment, when optical element load-bearing part 108 and the inclination of frame 104, control unit 150 It can be according to those the first sensor SR1 and the second sensor SR2 angle information obtained (such as the first rotation angle above-mentioned With the second rotation angle) carry out inclined compensation.Control unit 150 controls the rotation of optical element load-bearing part 108 to incline The method of oblique compensation is similar to previous embodiment, therefore details are not described herein.

Figure 15 is please referred to, Figure 15 is the side schematic view of an optical system 200 of another implementation of the disclosure.In this embodiment In, optical system 200 can have structure in any of the preceding embodiments configuration (such as comprising all members in optical system 100 Part).As shown in figure 14, optical system 200 may include an optical element load-bearing part 208, a circuit plate 218 (plate coil) with An and pedestal 212.Wherein, optical element load-bearing part 208 is carrying one optical element (such as a camera lens), and optical element Optical axis O is parallel to Y direction.Furthermore optical system 200 also includes an optical axis adjustment element 250, wherein optical axis adjustment element 250 can be a reflecting mirror, and configuration is parallel to the direction of optical axis O to turn to the incident light L entered along-Z-direction.Its In, the direction of incident light L and the direction of optical axis O are not parallel.

In this embodiment, optical system 200 can also be used electromagnetic driving force and carry out compensating optical element load-bearing part 208 relatively In the inclination of Image Sensor (positioned at the right side of pedestal 212, not indicated in figure).In addition, optical system 200 can also have one Driving mechanism (not shown) configures to rotate optical axis adjustment element 250, adjusts the incident angle of reflected light L ' whereby, into And reflected light L ' is aligned with optical axis O.

In this embodiment, optical axis adjustment element 250, optical element load-bearing part 208, circuit plate 218 and pedestal 212 are It is arranged along the direction of optical axis O.Due to circuit plate 218 be set between optical element load-bearing part 208 and pedestal 212 rather than (such as optical element load-bearing part 208 is along two sides of Z-direction) therefore optics is set to around optical element load-bearing part 208 System 200 can be reduced along the height H of Z-direction, achieve the purpose that micromation whereby.

Figure 16 is please referred to, Figure 16 is the side schematic view of an optical system 200A of another implementation of the disclosure.Optical system 200A is similar to optical system 200 above-mentioned, and the difference of the two is, the pedestal 212 and circuit plate 218 of optical system 200A It is to be set between optical axis adjustment element 250 and optical element load-bearing part 208.It configures through this structure, it can be further Optical system 200A is reduced along the length Ly of Y direction, achievees the purpose that micromation whereby.

In conclusion the disclosure provides a kind of optical system, it is single comprising a sensing unit, a driving assembly and a control Member.When optical element load-bearing part generates inclination relative to Image Sensor (such as optical system is shaken or mechanism Tolerance causes), the optical axis of optical element load-bearing part may not aligned with the optical axis of Image Sensor 115.At this point, sensing is single The available optical element load-bearing part of member rotates angle and/or around second the second axial rotation angle around the first of first axis Relevant information, then control unit 150 can drive the rotation of optical element load-bearing part according to this information control driving assembly, into And achieve the purpose that compensate tilt angle.

In some embodiments of the disclosure, optical element load-bearing part has rectangular configuration, and the first of driving assembly Magnetic element MEG1 and the second magnetic element MEG2 is four sides for being set to optical element load-bearing part.Match through this structure It sets, driving assembly can provide biggish electromagnetic driving force to push optical element load-bearing part mobile or driving optical element load-bearing part It is rotated with frame relative to fixed part.In the other embodiments of the disclosure, when optical system needs to carry biggish optics member When part, optical element load-bearing part be may be designed as with rectangular configuration, and the first magnetic element MEG1 and second of driving assembly Magnetic element MEG2 is four corners for being set to optical element load-bearing part, whereby carries optical element load-bearing part larger Optical element.

Although embodiment of the disclosure and its advantage have been disclosed as above, it will be appreciated that any technical field Middle technical staff, in the conception and scope for not departing from the disclosure, when can change, substitute with retouching.In addition, the guarantor of the disclosure Shield range be not necessarily limited by technique in specification in the specific embodiment, machine, manufacture, material composition, device, method and Step, technical staff can understand existing or following the developed work from disclosure disclosure in any technical field Skill, machine, manufacture, material composition, device, method and step, as long as can implement in the embodiment here more or less the same Function or the more or less the same result of acquisition can all be used according to the disclosure.Therefore, the protection scope of the disclosure includes above-mentioned technique, machine Device, manufacture, material composition, device, method and step.In addition, the protection scope of the disclosure also includes the combination of embodiment.

Claims

1. a kind of optical system, includes:

One fixed part includes a pedestal；

One sensing unit, configuration is to obtain one first rotation about the optical element load-bearing part with respect to the pedestal around a first axis Gyration and the information for rotating angle around one second axial one second；And

One driving assembly includes that a coil, the coil and the movable part are arranged along the optical axis direction for being parallel to the optical element Column, and the coil is set to around an aperture of the pedestal；

It is characterized in that, the first axis or this second be axially perpendicular to the optical axis direction.

2. optical system as described in claim 1, which is characterized in that driving assembly configuration is according to about first rotation Information of angle and the second rotation angle generates a driving force, drive the optical element load-bearing part around the first axis whereby or Second axial-rotation.

3. optical system as claimed in claim 2, which is characterized in that the optical system also includes an elastic element and a frame Frame, the elastic element include an internal ring portion, ring portion and an outer portion in one, the internal ring portion connect the optical element load-bearing part, Ring portion connects the frame in this, which connects the fixed part；

4. optical system as described in claim 1, which is characterized in that the pedestal has a rectangular configuration, and the driving assembly The corner of the pedestal is set.

5. optical system as described in claim 1, which is characterized in that the fixed part also includes a fixed frame, and the optical system System also includes a frame, which partly overlaps with the frame along the optical axis direction.

6. optical system as described in claim 1, which is characterized in that the first axis and this second axially through the optics member Part load-bearing part.

7. optical system as described in claim 1, which is characterized in that the driving assembly also includes a driving coil, is set to Around the optical element load-bearing part.

8. optical system as described in claim 1, which is characterized in that the driving assembly also includes two magnetic elements, setting In the side of the optical element load-bearing part, and the coil is set to the side and between two magnetic elements.

9. optical system as claimed in claim 8, which is characterized in that the driving assembly generates a driving force, is parallel to the light Axis direction.

10. optical system as described in claim 1, which is characterized in that the optical system also includes an optical axis adjustment element, is matched It sets so that incident light steering is parallel to the optical axis direction, the optical axis adjustment element and the pedestal are arranged along the optical axis direction, And the incident light and the optical axis direction are not parallel.

11. optical system as claimed in claim 10, which is characterized in that the pedestal is set to the movable part and the optical axis adjusts Between element.