CN108401101A - Optical system - Google Patents
Optical system Download PDFInfo
- Publication number
- CN108401101A CN108401101A CN201810016049.4A CN201810016049A CN108401101A CN 108401101 A CN108401101 A CN 108401101A CN 201810016049 A CN201810016049 A CN 201810016049A CN 108401101 A CN108401101 A CN 108401101A
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- China
- Prior art keywords
- optical system
- magnet assembly
- coil
- optical
- sensing coil
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/681—Motion detection
- H04N23/6812—Motion detection based on additional sensors, e.g. acceleration sensors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Adjustment Of Camera Lenses (AREA)
Abstract
The embodiment of the present disclosure provides a kind of optical system, and it includes a fixed part, a movable part, a drive component and a sensing coils.The fixed part includes a pedestal.The movable part includes an optical module load-bearing part, to carry an optical module.The drive component includes at least one first magnet assembly and at least one second magnet assembly.Second magnet assembly corresponds to first magnet assembly, to drive the optical module load-bearing part to be moved relative to the pedestal.The sensing coil is the changes of magnetic field for sensing first magnet assembly, thus to obtain the distance between the optical module load-bearing part and the pedestal.
Description
Technical field
The present invention relates to a kind of optical system more particularly to a kind of optical systems without position sensing component.
Background technology
With the development of science and technology, many electronic devices (such as smartphone) all have the work(of photograph or video recording now
Energy.By the photographing module being set on electronic device, user can operate electronic device to obtain miscellaneous photo.
In general, photographing module includes a position sensor, a control unit and a lens driving unit, and
The lens driving unit can be used to that a camera lens is driven to move along an optical axis of camera lens.When photographing module is shaken, position
Sensor can detect the displacement of camera lens, and control unit can drive camera lens toward phase according to this Bit andits control lens driving unit
Negative direction displacement, to achieve the purpose that anti-hand shakes.However, position sensor can occupy the inner space of photographing module so that be
The purpose of micromation and when needing to reduce the thickness of electronic device, the thickness of photographing module can not be into because of the position sensor due to
One step is reduced.
Therefore, how to be avoided that position sensor occupies the inner space of photographing module and reduces the thickness of photographing module,
It is worth discussion now and the project solved.
Invention content
In view of this, the present invention proposes a kind of optical system, to solve the above problem.
Embodiment of the invention discloses that a kind of optical system, it includes a fixed part, a movable part, a drive component with
And one sensing coil.The fixed part includes a pedestal.The movable part includes an optical module load-bearing part, to carry an optics
Component.The drive component includes at least one first magnet assembly and at least one second magnet assembly.Second magnet assembly is
Corresponding to first magnet assembly, to drive the optical module load-bearing part to be moved relative to the pedestal.The sensing coil is to use
To sense the changes of magnetic field of first magnet assembly, thus to obtain the distance between the optical module load-bearing part and the pedestal.
In some embodiments, which includes a coil, and the roll of the coil and the sensing coil
Roll it is parallel.
In some embodiments, which includes also one first elastic parts, is electrically connected the sensing coil.
In some embodiments, which includes a frame, which is disposed on the optical module and holds
In holder, and the sensing coil is disposed on the frame.
In some embodiments, which also includes one first elastic parts, a circuit board and two the second bullets
Property component.First elastic parts is to connect the optical module load-bearing part and the frame.Multiple second elastic parts are to connect
Connect first elastic parts and the circuit board.Wherein the sensing coil is to be electrically connected to be somebody's turn to do by multiple second elastic parts
Circuit board.
In some embodiments, the optical system also include two the second elastic parts, connect first elastic parts with
The circuit board, the wherein drive component are to be electrically connected the circuit board by multiple second elastic parts.
In some embodiments, which is disposed on the optical module load-bearing part, and the sensing coil
It is disposed on the fixed part.
In some embodiments, which includes also a circuit board, is set on the pedestal, which is electricity
Property connects the circuit board.
In some embodiments, which is disposed on first magnet assembly on the optical module load-bearing part,
And the roll of first magnet assembly is parallel with the roll of the sensing coil.
In some embodiments, which includes also a shell, which is to be connected to the shell.
In some embodiments, the roll of the sensing coil and the optical axis are not parallel.
In some embodiments, which also includes a magnetic conductivity component, neighbouring to be set to second magnet assembly.
In some embodiments, which also includes a frame, which is set on the frame, and should
First magnet assembly has a coil.
The embodiment of the present disclosure provides a kind of optical system, using a sensing coil, to detect optical module load-bearing part phase
Displacement for pedestal.Since there is no include any position sensing component and corresponding sensing magnetite in optical system
The inner space of optical system is occupied, therefore not only can reduce the overall dimensions of optical system and achieve the purpose that micromation,
It can also avoid the problem that the magnetic disturbance caused by position sensing component and corresponding sensing magnetite.
In addition, since optical system is not provided with any position sensing component, optical system need not be additionally arranged
Circuit is supplied to position sensing component.Sensing coil and the first magnet assembly in the embodiment of the present invention are only needed through the second bullet
Property component can be electrically connected at circuit board.Therefore the complexity of the wiring of optical system can be reduced and manufacture can be reduced
Cost, and the size of optical system can also be reduced, to achieve the purpose that micromation.
Middle disclosure will be explained below in additional features and benefits in the present invention, and part can be by aftermentioned specification
It has a clear understanding of, or can be learnt via practice by disclosed principle.The features and benefits of the present invention can be wanted by aftermentioned right
It asks the combination of instrument or device specifically noted in book and realizes and obtain.These and other feature of the present invention can be by aftermentioned
Specification and claims and become more apparent upon or can be learnt via practice by principle disclosed in this invention.
Description of the drawings
Fig. 1 is the stereoscopic schematic diagram of an optical system of one embodiment of the invention
Fig. 2 shows the explosive view of the optical system of Fig. 1
Fig. 3 shows the sectional view of the A-A ' line segments along Fig. 1.
Fig. 4 is that the optical system of one embodiment of the invention removes the schematic diagram of shell.
Fig. 5 is the stereoscopic schematic diagram of an optical system of another embodiment of the present invention.
Fig. 6 shows the sectional view of the optical system of B-B ' line segments along Fig. 5.
Fig. 7 A are the schematic diagram of the sensing coil and the second magnet assembly in the embodiment of Fig. 6.
Fig. 7 B are the schematic diagram of the sensing coil and the second magnet assembly of another embodiment of the present invention.
Fig. 8 is the schematic diagram of the optical system of another embodiment of the present invention.
Fig. 9 is the stereoscopic schematic diagram of an optical system of another embodiment of the present invention.
Figure 10 shows the sectional view of the optical system of C-C ' line segments along Fig. 9.
Figure 11 is the schematic diagram that the pedestal, circuit board and sensing coil of the optical system of Fig. 9 are watched by another visual angle.
Figure 12 is the diagrammatic cross-section of the optical system of another embodiment of the present invention.
Figure 13 is the part-structure schematic diagram of the optical system of the embodiment of the present invention.
Figure 14 is the schematic diagram of a camera system of another embodiment of the present invention.
Figure 15 is the schematic diagram of a camera system of another embodiment of the present invention.
Figure 16 is the front view of the camera system of another embodiment of the present invention.
Reference numeral is as follows：
100,100A, 100B, 100C, 100D optical system
102 shells
1021 opening in shell
1023 accommodating spaces
104 frames
1041 grooves
1043 central openings
106 upper reed plates
108 optical module load-bearing parts
1081 through holes
110 times reeds
112 pedestals
1121 holes on base
114 circuit boards
115 plate coils
115L coils
The second elastic parts of 116A
The second elastic parts of 116B
118 magnetic conductivity components
200 camera systems
300 camera systems
CLS1 senses coil
CLS2 senses coil
CLS3 senses coil
CLS4 senses coil
ECM is electrically connected part
The first magnet assemblies of MEG1
The second magnet assemblies of MEG2
The second magnet assemblies of MEG3
O optical axises
SDP pads
WD width
WN maximum distances
WR conducting wires
Specific implementation mode
In order to which the objects, features and advantages of the disclosure can be clearer and more comprehensible, special embodiment below, and coordinate institute's attached drawing
Show and elaborates.Wherein, each component in embodiment is configured to purposes of discussion, not limiting the embodiment of the present disclosure.
And the part of drawing reference numeral repeats in embodiment, is the relevance being not meant as between different embodiments to simplify the explanation.With
The direction term being previously mentioned in lower embodiment, such as：Upper and lower, left and right, front or rear etc. are only the directions with reference to attached drawings.
Therefore, the direction term used is intended to be illustrative and not intended to limit the embodiment of the present disclosure.
In addition, the term of relativity, such as " relatively low " or " bottom " and " higher " or " top " may be used in embodiment,
To describe relativeness of the component for another component of icon.It is appreciated that, if the device overturning of icon made
It turns upside down, then the component described in " relatively low " side will be as in the component of " 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 be more preferably within 5%.Given quantity is quantity about herein, implies that in the case of no certain illustrated, still may be used
The meaning of implicit " about ", " about ".
It is the stereoscopic schematic diagram of an optical system 100 of one embodiment of the invention to please refer to Fig.1 to Fig. 3, Fig. 1, and Fig. 2 is aobvious
The explosive view of the optical system 100 of diagram 1, and Fig. 3 shows the sectional view of the A-A ' line segments along Fig. 1.Optical system 100 can be tool
The camera system for having an optical drive component, to carry an optical module (not shown), and optical system 100 is can to pacify
Loaded on various electronic devices or portable electronic devices (such as smartphone or lithographic computer), executes image for user and obtain
The function of taking.In this embodiment, the optical drive component can be the voice coil motor for having auto-focusing (AF) function
(VCM), but not limited to this.In some embodiments, it may be provided with auto-focusings for the optical drive component of optical system 100
(Auto Focusing, AF) and optical anti-shake (Optical Image
Stabilization, OIS) function.
With continued reference to FIG. 2, Fig. 2 shows the explosive view of the optical system 100 of the embodiment of the present invention.Wherein, optical system
System 100 includes a shell 102, a frame 104, a upper reed plate 106, an optical module load-bearing part 108, one first magnet assembly
MEG1, a sensing coil CLS1, four the second magnet assembly MEG2, once reed 110, a pedestal 112, a circuit board 114 with
An and plate coil 115 (circuit board).Wherein, pedestal 112 is that can be fixedly connected to shell 102 to be defined as a fixed part,
Its connection type can be the modes such as riveting, engaging or welding, but not limited to this, as long as pedestal 112 can be made to be permanently connected
It is fallen in scope of the invention in shell 102.Wherein, the fixed part can include other components in other embodiment.
Furthermore optical module load-bearing part 108 may be defined as a movable part with frame 104, moved relative to the fixed part.
Aforementioned shell 102 has a hollow structure, and is formed with an opening in shell 1021 thereon, is formed on pedestal 112
There are a holes on base 1121, the center of opening in shell 1021 to correspond to the optics group that optical module load-bearing part 108 is carried
The optical axis O of part (not shown), and holes on base 1121 corresponds to be arranged the image sensing component below pedestal 112
(not shown).Shell 102 can have an accommodating space 1023, to accommodating aforesaid frame 104, upper reed plate 106, optics group
Part load-bearing part 108, the first magnet assembly MEG1, sensing coil CLS1, multiple second magnet assembly MEG2 and lower reed 110.
In addition, shell 102 can also house circuit board 114, plate coil 115 and pedestal 112.Furthermore the first magnet assembly MEG1 can
For a coil, and a drive component is may make up with multiple second magnet assembly MEG2 corresponding to the first magnet assembly MEG1,
It is electrically connected at circuit board 114 and optical module load-bearing part 108 can be driven to be moved along the directions optical axis O relative to pedestal 112.Value
It obtains it is noted that not including any position sensing component in optical system 100.
As shown in Fig. 2, optical module 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 module, the optics group can be enabled
Part is locked in through hole 1081.In this embodiment, the first magnet assembly MEG1 is to surround to be set to optical module load-bearing part
On 108.In addition, frame 104 has multiple grooves 1041 and a central opening 1043.In this embodiment, frame 104 has
Four grooves 1041, to house aforementioned four the second magnet assembly MEG2, but groove 1041 and the second magnet assembly MEG2
Quantity embodiment without being limited thereto.In this embodiment, the shape of the second magnet assembly MEG2 can be strip, but not limited to this,
Such as there can be different shapes in other embodiments.
Optical module load-bearing part 108 is disposed in central opening 1043 with aforementioned optical component and can be relative to frame
104 movements.More specifically, as shown in figure 3, optical module load-bearing part 108 is can be connected by upper reed plate 106 and lower reed 110
It is connected to frame 104 and is suspended in central opening 1043.When the first magnet assembly MEG1 is powered, four the second magnet assemblies
MEG2 can generate electromagnetic driving force (electromagnetic force) with the first magnet assembly MEG1, thus drive optics group
Part load-bearing part 108 is mobile along optical axis O (Z-direction) relative to frame 104 and pedestal 112, to carry out auto-focusing (Auto
Focusing).In certain embodiments, it may include at least one multipole magnet in aforementioned second magnet assembly MEG2
(multipole magnet), to be incuded with corresponding first magnet assembly MEG1 and drive optical module load-bearing part
108 move along the directions optical axis O to focus.
It is to be understood that upper reed plate 106 may respectively be one first elastic parts with lower reed 110.In this embodiment, on
Reed 106 can be four reeds that can be separation, and lower reed 110 can then be one of the forming, but not limited to this.For example,
Upper reed plate 106 can also be one of the forming in other embodiment.
As shown in Figure 2 and Figure 3, sensing coil CLS1 is disposed on the top of frame 104, and senses coil CLS1 and the
The roll of one magnet assembly MEG1 (coil) is generally parallel to each other, such as is parallel to optical axis O.It is worth noting that, when the
When one magnet assembly MEG1 is powered electromagnetic drive power drive optical module load-bearing part 108 is generated with four the second magnet assembly MEG2
When mobile along optical axis O (Z-direction) relative to frame 104, along Z axis between sensing coil CLS1 and the first magnet assembly MEG1
The distance in direction can change.Therefore, sensing coil CLS1 can sense the changes of magnetic field of the first magnet assembly MEG1 and generate one
Induced current is simultaneously exported to a processing unit (such as a microprocessor) for aforementioned portable electronic devices, and then the processing is single
Member can judge optical module load-bearing part 108 relative to pedestal 112 according to a reference data and the induced current received
Position.Wherein, reference data may include induced current and sense positions of the coil CLS1 relative to the first magnet assembly MEG1
Relationship correspond to table.Since sensing the distance between coil CLS1 and pedestal 112 are fixed, work as and obtain sensing coil
CLS1 relative to the first magnet assembly MEG1 apart from when, can obtain with the first magnet assembly MEG1 optical module carry
Position of the part 108 relative to pedestal 112.
Furthermore as shown in Fig. 2, circuit board 114 is disposed on pedestal 112, and plate coil 115 is disposed on circuit board
On 114.Wherein, circuit board 114 can be a flexible circuit board (Flexible Printed Circuit, FPC), and plate coil
It may include four coil 115L in 115, correspond respectively to the second magnet assembly MEG2.
In addition, as shown in Fig. 2, optical system 100 also includes two the second elastic parts 116A and two second elastic groups
Part 116B, wherein each second elastic parts all have string configuration, for example, a column or linear structure, but are not limited to
This.Wherein, one end of each the second elastic parts is connection upper reed plate 106, and the other end of the second elastic parts is to connect
It is connected to circuit board 114.It is configured by aforementioned structure, (figure is not for optical module load-bearing part 108 and its optical module carried
Show) with frame 104 can by the second elastic parts 116A and the second elastic parts 116B of deflection with respect to pedestal 112 along
It moves in the direction of X-Y plane.
In this embodiment, plate coil 115 is to be in direct contact and be electrically connected at (such as the plate coil of circuit board 114
The circuit that electrical contact is in direct contact on circuit board 114 is provided on 115).When the coil in plate coil 115 is powered, meeting
Incude with corresponding second magnet assembly MEG2 and generate electromagnetic driving force, thus drives optical module load-bearing part 108, the light
It learns component and frame 104 is moved along X-Y plane.Therefore, if when optical system 100 is shaken, optical module carrying
Part 108 can be driven by aforementioned electromagnetic driving force and in being moved on X-Y plane, when being shaken with compensation optical system 100
It is mobile, thus achieve the purpose that optical anti-shake (Optical Image Stabilization).
Fig. 2 and Fig. 4 are refer again to, Fig. 4 is that the optical system 100 of one embodiment of the invention removes the schematic diagram of shell 102.
As shown in figure 4, an input terminal of sensing coil CLS1 and an output end be can directly by two electric connection part ECM (such as
Scolding tin) it is connected to upper reed plate 106, then corresponding two the second elastic parts 116A are also connected to this two and electrically connect
Fitting ECM and circuit board 114.This means, sensing coil CLS1 can be electrically connected at electricity by this two the second elastic parts 116A
Road plate 114.Similarly, an input terminal of the first magnet assembly MEG1 and an output end can also pass through upper reed plate 106 and two
Second elastic parts 116B is electrically connected at circuit board 114 (due to the non-tables of the relationship at visual angle the second elastic parts 116B in Fig. 4
Show).
Since the optical system 100 of the embodiment of the present invention is to sense the first magnet assembly MEG1 using sensing coil CLS1
Changes of magnetic field, to obtain position of the optical module load-bearing part 108 relative to pedestal 112, therefore only need through four the second bullets
Property component can by sense coil CLS1 and the first magnet assembly MEG1 electric signal be transferred to circuit board 114.Due to not setting
Set any position sensing component, therefore optical system 100 need not additionally be arranged circuit and be supplied to position sensing component (such as suddenly
That component) it is used as signal transmission, therefore the complexity of the wiring of optical system 100 can be reduced and can be reduced and be manufactured into
This.In addition, the size of optical system 100 can also be reduced by being not provided with position sensing component, to achieve the purpose that micromation.
Fig. 5 and Fig. 6 are please referred to, Fig. 5 is the stereoscopic schematic diagram of an optical system 100A of another embodiment of the present invention, and is schemed
The sectional view of 6 display optical system 100A of B-B ' line segments along Fig. 5.The optical system 100A and previous embodiment of the present embodiment
Optical system 100 it is similar, difference is in this embodiment, as shown in fig. 6, the first magnet assembly MEG1 (coil) is to set
It is placed in the bottom of optical module load-bearing part 108, and senses the top that coil CLS2 is disposed on optical module load-bearing part 108.In
In this embodiment, the roll of sensing coil CLS2 is can be slightly parallel with the roll of the first magnet assembly MEG1, and by light
When the directions axis O are watched, sensing coil CLS2 is locally be overlapped with the first magnet assembly MEG1.Imply that sensing coil CLS2 around
Coil number is can be equal or different with the winding turns of the first magnet assembly MEG1.
When the first magnet assembly MEG1 is powered electromagnetic drive power drive optics is generated with four the second magnet assembly MEG2
When component load-bearing part 108 is mobile along optical axis O (Z-direction) relative to frame 104, coil CLS2 and the second magnet assembly are sensed
It can change along the distance of Z-direction between MEG2 so that sensing coil CLS2 generates changes of magnetic field and right according to cold secondary law
Generate an induced current with answering.The induced current may be output to processing unit above-mentioned, and then the processing unit can basis
Another reference and the induced current that is received judge position of the optical module load-bearing part 108 relative to pedestal 112.
Reference data in this embodiment may include the position of an induced current and optical module load-bearing part 108 relative to pedestal 112
Relationship corresponds to table.
In addition, it is noted that please refer to sensing coil CLS1 in the embodiment that Fig. 7 A and Fig. 7 B, Fig. 7 A are Fig. 6 with
The schematic diagram of second magnet assembly MEG2.Fig. 7 B are the sensing coil CLS1 and the second magnet assembly of another embodiment of the present invention
The schematic diagram of MEG2.As shown in Figure 7 A, sensing coil CLS1 is moved along Z-direction relative to the second magnet assembly MEG2,
And the pole orientation of the second magnet assembly MEG2 is perpendicular to Z axis.It is worth noting that, sensing coil CLS1 is along X-axis side
To width WD be less than two the second magnet assembly MEG2 the poles N maximum distance WN.
In addition, as shown in Figure 7 B, the pole orientation of the second magnet assembly MEG2 is parallel to Z-direction, such as two the
Two magnet assembly MEG2 are all towards sensing coil CLS1.Configuration in this way can improve the sensing energy of sensing coil CLS1
Power.
It is similar to previous embodiment, the optical system 100A of this embodiment is also not provided with any position sensing component, because
Circuit need not be additionally arranged in this optical system 100A, and sensing coil CLS2 and the first magnet assembly MEG1 only needs to pass through respectively
Second elastic parts 116A and the second elastic parts 116B can be electrically connected at circuit board 114.Therefore optical system can be reduced
Unite 100A wiring complexity and manufacturing cost can be reduced.Similarly, light can also be reduced by being not provided with position sensing component
The size of system 100A, to achieve the purpose that micromation.
Referring to FIG. 8, Fig. 8 is the schematic diagram of the optical system 100B of another embodiment of the present invention.For convenience of explanation, scheme
8 optical system 100B only draws drive component, optical module load-bearing part 108A and sensing coil CLS2.In this embodiment
In, optical module load-bearing part 108A has eight-sided formation, and the second magnet assembly MEG3 has trapezium structure.Four second
Magnet assembly MEG3 is respectively arranged at four corners of optical module load-bearing part 108A, is thus generated with the first magnet assembly MEG1
Electromagnetic driving force.
The type of drive of this embodiment is similar to previous embodiment, therefore details are not described herein.It is worth noting that, this is implemented
The shape design of optical module load-bearing part 108A and the second magnet assembly MEG3 in example can be further reduced optical system
100B can further achieve the purpose that micromation in the size of X-direction and Y-direction.
Fig. 9 and Figure 10 are please referred to, Fig. 9 is the stereoscopic schematic diagram of an optical system 100C of another embodiment of the present invention, and
Figure 10 shows the sectional view of the optical system 100C of the C-C ' line segments along Fig. 9.The optical system 100C of the present embodiment and aforementioned reality
The optical system 100 for applying example is similar, and difference is in this embodiment, and the first magnet assembly MEG1 is disposed on optical module and holds
In holder 108, and senses coil CLS3 and be disposed on 114 bottom of circuit board.Wherein, circuit board 114 can define be contained in it is described
Fixed part.As shown in Figure 10, circuit board 114 is disposed on pedestal 112, and is sensed coil CLS3 and be disposed on circuit board
114 along Z-direction a bottom surface and circuit board 114 can be electrically connected at.In addition, in other embodiment, circuit board 114 can
It is set on pedestal 112, sensing coil CLS3 is to may be disposed on circuit board 114, and circuit board 114 is to be located at sensing coil
Between CLS3 and pedestal 112.
Then, pedestal 112, circuit board 114 and the sense wire of the optical system 100C that 1, Figure 11 is Fig. 9 are please referred to Fig.1
The schematic diagram that circle CLS3 is watched by another visual angle.As shown in figure 11, sensing coil CLS3 is disposed on the bottom of circuit board 114
On face, and it is directly to be electrically connected at circuit board 114 by pad SDP to sense coil CLS3.Due to the sense of this embodiment
Test coil CLS3 need not can be electrically connected at circuit board 114 by aforementioned second elastic parts 116A, therefore sense coil
Signal transmission between CLS3 and circuit board 114 can reduce the interference from transmission path, be generated to avoid the problem of noise.
Please refer to Fig.1 the diagrammatic cross-section for the optical system 100D that 2, Figure 12 is another embodiment of the present invention.This embodiment
Optical system 100D it is similar to optical system 100C, difference be sense coil CLS3 be set to circuit board 114 and pedestal 112
Between, and optical system 100D further includes four sensing coil CLS4.In this embodiment, multiple sensing coil CLS4
It is to be connected to shell 102, can be e.g. fixedly arranged on the internal face of four sides of shell 102, and sense coil
CLS4 is towards corresponding second magnet assembly MEG2.Wherein, the roll of sensing coil CLS4 and optical axis O are not parallel.Separately
Outside, it is notable that the installation position embodiment without being limited thereto of sensing coil CLS4.For example, fixed part may include separately
One frame (not shown) is set between shell 102 and frame 104 and is fixedly connected to pedestal 112.Multiple sense wires
Enclosing CLS4 is may be disposed on the frame.
When optical system 100D is shaken, optical module load-bearing part 108 can be moved with frame 104 along X/Y plane.
For example, when the frame 104 in Figure 12 be along X-direction closer or far from sensing coil CLS4 when, according to Lenz's law,
Sensing coil CLS4 will produce changes of magnetic field and export an induced current.Then processing unit above-mentioned can be according to another with reference to money
Material and the induced current that is received judge position of the optical module load-bearing part 108 along X/Y plane relative to pedestal 112.
Reference data in this embodiment may include an induced current and optical module load-bearing part 108 along X/Y plane relative to pedestal
The relationship of 112 position corresponds to table.
Since the optical system 100D of this embodiment is also not provided with any position sensor, optical system 100D
It can achieve the purpose that micromation.In addition, plate coil can also be used in sensing coil CLS4, further to reach the mesh of micromation
's.In this embodiment, by the way that four sensing coil CLS4 are arranged without remaining position sensor, optical system 100D is arranged
Displacement of the optical module load-bearing part 108 along X/Y plane relative to pedestal 112 can further be obtained.
In addition, please referring to Fig.1 3, Figure 13 is the part-structure schematic diagram of the optical system 100D of the embodiment of the present invention.Such as figure
Shown in 13, sensing coil CLS4 is to be connected to circuit board 114 by conducting wire WR.Due to will not between shell 102 and circuit board 114
There is any displacement to generate, therefore can avoid the problem of conducting wire WR between sensing coil CLS4 and circuit board 114 is easily damaged.
Please refer to Fig.1 the schematic diagram for the camera system 200 that 4, Figure 14 is another embodiment of the present invention.In this embodiment
In, camera system 200 may include two optical system 100A, and two optical system 100A are to be disposed adjacent to each other.In order to clear
Chu indicates, the members of optical system 100A are only indicated in Figure 14.As shown in figure 14, the optical system 100A of this embodiment can
A magnetic conductivity component 118 (magnetic conductive board) is further included, is arranged between two the second magnet assembly MEG2 relative to each other.It is logical
Cross the setting of magnetic conductivity component 118, it is possible to reduce the magnetic disturbance between two adjacent optical system 100A.
Furthermore due to the sense for being not provided with any position sensor in optical system 100A and being used to position sensor
Magnetite is surveyed, therefore can not only reduce the overall dimensions of camera system 200, and phase in camera system 200 can be effectively reduced
Between two adjacent optical system 100A the problem of magnetic disturbance.
5 and Figure 16 are please referred to Fig.1, Figure 15 is the schematic diagram of a camera system 300 of another embodiment of the present invention, and Figure 16
For the front view of Figure 15.In this embodiment, camera system 300 may include two optical system 100D, and this two optics
System 100D is to be disposed adjacent.Optical system 100D is similar to optical system 100A, and difference is, is located at two optical modules
Coil 115L between load-bearing part 108 is provided on movable part (movable part does not indicate, may be, for example, the frame 104 of Fig. 6), and
The second magnet assembly MEG2 between two optical module load-bearing parts 108 is fixedly set on fixed part (fixed part
It does not indicate, may be, for example, the pedestal 112 of Fig. 6).
It is worth noting that, the magnetic of two the second magnet assembly MEG2 between two optical module load-bearing parts 108
Extreme direction is to be generally perpendicular to Z-direction.As shown in figure 16, the poles N of this two the second magnet assembly MEG2 are toward each other.
The problem of configuring through this structure, can not only reducing magnetic disturbance can also further reduce two optical system 100D
The distance between, further achieve the purpose that micromation.
In conclusion the disclosure provides a kind of optical system, using a sensing coil, to detect optical module load-bearing part
Displacement relative to pedestal.Since there is no include any position sensing component and corresponding sensing magnetite in optical system
The inner space of optical system is occupied, therefore not only can reduce the overall dimensions of optical system and reach the mesh of micromation
, it can also avoid the problem that the magnetic disturbance caused by position sensing component and corresponding sensing magnetite.
In addition, since optical system is not provided with any position sensing component, optical system need not be additionally arranged
Circuit is supplied to position sensing component.Sensing coil and the first magnet assembly in the embodiment of the present invention are only needed through the second bullet
Property component can be electrically connected at circuit board.Therefore the complexity of the wiring of optical system can be reduced and manufacture can be reduced
Cost, and the size of optical system can also be reduced, to achieve the purpose that micromation.
Although embodiment of the disclosure and its advantage have been disclosed as above, it will be appreciated that those skilled in the art exist
Do not depart from the spirit and scope of the embodiment of the present disclosure, when can change, substitute with retouching.In addition, the guarantor of the embodiment of the present disclosure
Shield range be not necessarily limited by technique in specification in the specific embodiment, machine, manufacture, material composition, device, method and
Step, any those skilled in the art can understand existing or following the developed technique, machine from embodiment of the present disclosure content
Device, manufacture, material composition, device, method and step, if can implement in the embodiment here more or less the same function or
Obtaining more or less the same result can all use according to the disclosure.Therefore, the protection domain of the disclosure includes above-mentioned technique, machine, system
It makes, material composition, device, method and step.In addition, each claim constitutes an other embodiment, and the protection of the disclosure
Range also includes the combination of each claim and embodiment.
Claims (13)
1. a kind of optical system, including：
One fixed part a, including pedestal；
One movable part, including：
One optical module load-bearing part, to carry an optical module；
One drive component, including：
At least one first magnet assembly；And
At least one second magnet assembly corresponds to first magnet assembly, to drive the optical module load-bearing part relative to this
Pedestal moves；And
One sensing coil thus to obtain the optical module load-bearing part and is somebody's turn to do to sense the changes of magnetic field of first magnet assembly
The distance between pedestal.
2. optical system as claimed in claim 1, wherein first magnet assembly include a coil, and the roll of the coil with should
The roll for sensing coil is parallel.
3. optical system as described in claim 1, the wherein optical system also include one first elastic parts, being electrically connected should
Sense coil.
4. optical system as described in claim 1, the wherein movable part also include a frame, which is setting
In on the optical module load-bearing part, and the sensing coil is disposed on the frame.
5. optical system as claimed in claim 4, the wherein optical system also include：
One first elastic parts connects the optical module load-bearing part and the frame；
One circuit board；And
Two the second elastic parts connect first elastic parts and the circuit board, and wherein the sensing coil is by multiple institutes
It states the second elastic parts and is electrically connected the circuit board.
6. optical system as claimed in claim 5, the wherein optical system include also two the second elastic parts, connect this
One elastic parts and the circuit board, the wherein drive component is to be electrically connected the circuit by multiple second elastic parts
Plate.
7. optical system as described in claim 1, wherein first magnet assembly are disposed on the optical module load-bearing part,
And the sensing coil is disposed on the fixed part.
8. optical system as claimed in claim 7, the wherein optical system include also a circuit board, it is set on the pedestal,
The sensing coil is to be electrically connected the circuit board.
9. optical system as described in claim 1, wherein the sensing coil are disposed on the optics with first magnet assembly
On component load-bearing part, and the roll of first magnet assembly is parallel with the roll of the sensing coil.
10. optical system as described in claim 1, the wherein fixed part include also a shell, which is to be connected to
The shell.
11. optical system as claimed in claim 10, the wherein roll of the sensing coil and optical axis are not parallel.
12. optical system as described in claim 1, the wherein drive component also include a magnetic conductivity component, neighbouring to be set to
Second magnet assembly.
13. optical system as claimed in claim 2, the wherein movable part also include a frame, first magnet assembly setting
In on the frame, and first magnet assembly has a coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/887,724 US20180224628A1 (en) | 2017-02-08 | 2018-02-02 | Optical system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762456261P | 2017-02-08 | 2017-02-08 | |
| US62/456,261 | 2017-02-08 |
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| CN108401101A true CN108401101A (en) | 2018-08-14 |
| CN108401101B CN108401101B (en) | 2021-03-23 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810016049.4A Active CN108401101B (en) | 2017-02-08 | 2018-01-08 | Optical system |
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| CN111835967A (en) * | 2019-04-19 | 2020-10-27 | 台湾东电化股份有限公司 | Driving mechanism of photosensitive assembly |
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|---|---|
| CN108401101B (en) | 2021-03-23 |
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