CN110873942A - Lens driving device, camera device, and electronic apparatus - Google Patents
Lens driving device, camera device, and electronic apparatus Download PDFInfo
- Publication number
- CN110873942A CN110873942A CN201811019184.0A CN201811019184A CN110873942A CN 110873942 A CN110873942 A CN 110873942A CN 201811019184 A CN201811019184 A CN 201811019184A CN 110873942 A CN110873942 A CN 110873942A
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- China
- Prior art keywords
- axis direction
- lens
- movable
- lens driving
- frame
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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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
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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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
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
Abstract
The invention provides a lens driving device, a camera device and an electronic apparatus, which can ensure a clearance required by the movement of a movable body and can reduce the height of the device. A lens driving device (100A) is provided with: a movable body having a lens carrier (11) for fixing the lens body (80); and a frame (60) which can accommodate the movable body in a manner of moving along the X-axis direction which is the optical axis direction of the lens body (80), wherein the frame (60) is provided with an inner side surface extending along the X-axis direction and the Y-axis direction orthogonal to the X-axis direction, a gap is arranged between the inner side surface of the frame (60) and the movable body in the Z-axis direction orthogonal to the X-axis direction and the Y-axis direction, a concave part (63) is formed on the inner side surface of the frame (60), the movable body is provided with a protruding part (111) protruding with a step difference (113) relative to the two end parts of the movable body at the position corresponding to the concave part (63) in the central part of the Y-axis direction, and the protruding part (111) and the concave part (63.
Description
Technical Field
The invention relates to a lens driving device, a camera device and an electronic apparatus.
Background
In general, a small camera device is mounted on an electronic device such as a smartphone. Such a camera device is equipped with a lens driving device for driving a lens body, and realizes an auto-focusing function (hereinafter referred to as an "AF function") for automatically focusing when a photographic subject is photographed, and a shake correction function (hereinafter referred to as an "OIS function") for optically correcting a shake (vibration) occurring during photographing to reduce image disturbance.
For example, as disclosed in patent document 1, the lens driving device realizes an AF function and an OIS function by a magnet provided in a lens body and a coil provided in a base.
Further, the lens driving device includes a housing for accommodating the lens body and the base, but in order to ensure movement of the lens body with respect to the base, a certain gap must be formed between an inner surface of the housing and an outer surface of a lens carrier (carrier) to which the lens body is fixed.
Patent document 1: national publication of WO2016/166730
Disclosure of Invention
In this lens driving device, the lens body and the base are accommodated in the housing in a stacked manner, and therefore the height of the housing is affected by the height of the movable body to which the lens body is fixed, the gap between the coil for driving the movable body and the magnet, the gap between the housing for moving the movable body and the movable body in the housing, and the like, and there is a problem that it is difficult to further reduce the height of the device while securing the gap required for the movement of the movable body.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a lens driving device, a camera device, and an electronic apparatus, which can secure a gap necessary for moving a movable body and can reduce the height of the device.
In order to achieve the above object, the present invention provides a lens driving device including: a movable body having a lens carrier for fixing the lens body; and a frame body which accommodates the movable body so as to be movable in an X-axis direction which is an optical axis direction of the lens body, wherein the frame body has an inner surface extending in the X-axis direction and a Y-axis direction orthogonal to the X-axis direction, a gap is provided between the inner surface of the frame body and the movable body in a Z-axis direction orthogonal to the X-axis direction and the Y-axis direction, a recessed portion is formed in the inner surface of the frame body, the movable body has protruding portions which protrude at a step difference from both end portions thereof at a position corresponding to the recessed portion in a center portion in the Y-axis direction, and the protruding portions directly face the recessed portion.
In addition, according to another aspect of the present invention, there is provided a camera device including the lens driving device.
Further, according to still another aspect of the present invention, there is provided an electronic apparatus including the camera device.
According to the present invention, the recessed portion is formed on the inner surface of the frame, the protruding portion protruding at a step from both end portions of the movable body is formed at a position corresponding to the recessed portion, and the protruding portion directly faces the recessed portion with a gap therebetween, so that a gap necessary for the movement of the movable body can be secured. This can reduce the height of the lens driving device.
Drawings
Fig. 1 is a partial sectional view of a lens driving device in embodiment 1 of the present invention, as viewed from the front.
Fig. 2 is a partial sectional view of the lens driving device in embodiment 2 of the present invention, viewed from the front.
Fig. 3 is a partial view of the lens driving device according to embodiment 3 of the present invention, as viewed from the front.
Fig. 4 is an exploded perspective view showing a lens driving device according to embodiment 4 of the present invention.
Fig. 5 is a partial sectional view of the lens driving device shown in fig. 4, as seen from the front, after combination.
Description of the reference numerals
100A, 100B, 100C, 100D lens driving devices; 11 a lens carrier; 111 a projection; 13 a base; 14 a coil assembly; 140 a magnet; 141 mounting a component; 142 coils; 143 a driving circuit substrate; 15, the 1 st base; 17, a 2 nd base; 21 st AF coil; 22 a 2 nd AF coil; 23, 1 st magnet for AF; 24 nd 2AF magnet; 25 a 1 st AF supporting plate spring; 26 nd 2AF supporting plate spring; an induction magnet for 30 AF; 31 a 1 st OIS coil; 32 a coil for 2 OIS; 33 a 1 st OIS magnet; 34 magnet for 2 OIS; 35 a 1OIS supporting plate spring; 36 a support plate spring for 2 OIS; 37 a 1 st shield can; 38 a 2 nd shield can; 40 a drive circuit board; a 50 prism; 60 a frame body; 61 an upper wall; 62 lower wall; 63 a recessed portion; 64 a frame body; 65, an upper cover body; 66 a lower cover body; 67 an upper frame body; 68 a lower frame body; 80 lens body.
Detailed Description
Hereinafter, a lens driving device according to each embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments, and various modifications can be made without departing from the scope of the present invention. The drawings are schematic, and the proportions of the dimensions and the like may be different from those in reality. Specific dimensions and the like are determined by referring to the following description. In addition, it is obvious that the drawings include portions having different dimensional relationships and ratios from each other. In the drawings, the same reference numerals denote the same or equivalent components.
Fig. 1 is a partial sectional view showing a lens driving device 100A according to embodiment 1 of the present invention, and as shown in fig. 1, the lens driving device 100A includes a movable body that fixes a lens body 80, and a frame body 60 that houses the movable body so as to be movable in an X-axis direction, which is an optical axis direction of the lens body 80. For convenience of explanation, in the present embodiment, the optical axis direction of the lens body 80 is referred to as the X-axis direction, the subject side is referred to as the front side, and the opposite subject side is referred to as the rear side. In fig. 1, the depth direction of the drawing is the X-axis direction which is the optical axis direction of the lens body 80, the left-right direction of the drawing orthogonal to the X-axis direction is the Y-axis direction, and the up-down direction of the drawing orthogonal to the X-axis direction and the Y-axis direction is the Z-axis direction. Light from the subject enters the lens body 80 through a prism (not shown) disposed on the front side of the lens driving device 100A. Then, the light emitted from the lens body 80 is converged to a light receiving sensor (not shown) disposed behind the lens driving device 100A.
The movable body has a lens carrier 11 for fixing the lens body 80, and the lens carrier 11 is made of a resin material and is formed into a box-like body having an upper opening such that the lens body 80 is sandwiched by side walls on both sides in the Y-axis direction. The lower opening may be open. In the present embodiment, the lens body 80 can be accommodated inside the box-shaped body of the lens carrier 11 from the front or the rear. Further, a magnet 140 is attached to the outer surface of one side wall of the lens carrier 11.
The movable body is supported by the base 13 so as to be movable in the X-axis direction, which is the optical axis direction of the lens body 80. The base 13 is also made of a resin material and is a box-shaped body having an upper opening. The lower opening may be open. The movable body is accommodated in the box-shaped body. In order to form the optical path in the X-axis direction, through holes are formed in the front and rear walls, respectively. Further, a coil assembly (assembly)14 is attached to one side wall of the base 13 facing the magnet 140 attached to the outer side surface of the one side wall of the lens carrier 11. The coil assembly 14 has a drive circuit substrate 143 and a coil 142. The magnet is disposed at a position facing the coil 142 of the coil block 14. The magnet is magnetized such that, for example, the surface on the side opposite to the coil 142 is an N pole and the surface on the opposite side is an S pole. Also, when a current flows through the coil 142, an electromagnetic force is generated in the coil 142 to be moved in the X-axis direction. When an electromagnetic force is generated in the coil 142, a reaction force is generated in the magnet, and thus the movable body can be moved in the X-axis direction.
The driving circuit board 143 may be a printed circuit board, a flexible printed circuit board, or the like, and the mounting member 141 may be mounted so as to be surrounded by the coil 142. The mounting component 141 may be, for example, an IC incorporating a hall element, a driver IC, or the like, but is not limited thereto, and may be an electronic component for ordinary mounting.
The movable body is supported on the base 13 by a support plate spring (not shown) provided in the front and rear. The shape of the supporting plate spring is not particularly limited, but may be configured so that the movable body is movably supported by the housing 60 and the optical path is not obstructed.
The movable body and the base 13 are accommodated in the housing 60 so that the movable body can move in the X-axis direction, which is the optical axis direction of the lens body 80. The frame 60 is fixed to the base 13. The frame 60 is a box-shaped body having one end opened in the X-axis direction, and can accommodate the movable body through the opening. The frame 60 includes an upper wall 61 and a lower wall 62 extending in the X-axis direction and the Y-axis direction orthogonal to the X-axis direction, and a recess 63 is formed in an inner surface of at least one of the upper wall 61 and the lower wall 62.
Further, a gap necessary for moving the movable body is provided between the inner side surface of the frame 60 and the movable body in the Z-axis direction orthogonal to the X-axis direction and the Y-axis direction.
The movable body has a step 113 formed at a position corresponding to the recess 63 formed in the inner surface of the housing 60, and a protrusion 111 directly facing the recess 63 with a gap therebetween. Here, the step 113 is formed so that both ends of the movable body in the Y axis direction in the Z axis direction are lower than the protruding portion 111 including the central portion of the lens body 80. Therefore, even if the inner surface of the housing 60 is lowered by the amount of the step 113, the formation of the recessed portion 63 can secure a space necessary for the movable body to move between the inner surface of the housing 60 and the protruding portion 111. At least a part of the protrusion 111 may be formed by the lens body 80. The lens carrier 11 includes a lens carrier body 112 and projections 111 formed corresponding to the lens body 80, and the projections 111 are erected from both sides of the lens body 80 of the lens carrier body 112 in the Y-axis direction. Further, the width of the protruding portion 111 in the Y axis direction is narrower than the width of the recessed portion 63. Further, a predetermined interval necessary for the movement of the movable body is provided between the frame body 60 and the lens carrier main body 112 in the Z-axis direction. Therefore, even if the top surface of the protruding portion 111 is flush with the inner surface of the frame 60 other than the recessed portion 63 or is located closer to the recessed portion 63, a necessary interval for the movement of the movable body can be secured.
The frame 60 is a rectangular parallelepiped box made of stainless steel and having one open end. As described above, the prism (not shown) is disposed on the front side of the lens driving device 100A, and the light receiving sensor (not shown) is disposed on the rear side. Light incident on the prism from the subject is reflected by the prism with its optical axis bent by 90 °, and is condensed by the lens of the lens body 80 and detected by the light receiving sensor. The AF function can be realized by moving the movable body in the optical axis direction based on the detection data of the light receiving sensor. Further, the housing 60 can also function as a protective cover and a shield cover.
Next, the lens driving device 100B according to embodiment 2 of the present invention will be described in detail with reference to fig. 2.
As shown in fig. 2, a lens driving device 100B according to embodiment 2 is different from the lens driving device 100A shown in fig. 1 in that a housing 60 includes a housing main body 64 and a cover, and the cover includes an upper cover 65 and a lower cover 66. The same components as those in embodiment 1 are denoted by the same reference numerals, and different components will be described below.
Specifically, an opening is provided in at least one of the upper wall 61 and the lower wall 62 of the housing main body 64, and a lid is provided outside the housing main body 64 so as to cover the opening. The lid is preferably made of stainless steel, and may be bonded to the frame body 64 so as to cover the opening. Thus, the recessed portion 63 is formed by an opening provided in the housing main body 64 and a lid provided outside the housing main body 64.
The thickness of the lid is preferably thinner than the thickness of the housing main body 64. Further, the opening preferably has a size larger than both the X-axis direction and the Y-axis direction of the lens body 80. Thus, after the lens driving device 100B is completed, the lens body 80 is attached to the lens carrier 11 through the opening, and then the opening is covered with the lid body, so that the manufacturing is facilitated. The upper cover 65 and the lower cover 66 are sized so as to completely cover the opening.
Hereinafter, a lens driving device 100C according to embodiment 3 of the present invention will be described with reference to fig. 3. Fig. 4 is an exploded perspective view showing a lens driving device 100D according to embodiment 4 of the present invention, but a part of the configuration is common to the lens driving device 100C, and therefore, reference is made to this.
The lens driving device 100C of the present invention further includes an intermediate body that accommodates the movable body so as to be movable in the X-axis direction, and the frame body 60 accommodates the intermediate body so as to be movable in the Y-axis direction. The AF function and the OIS function are realized by rotating the prism 50 disposed on the front side about the Y axis.
As shown in fig. 3, the movable body of the lens driving device 100C according to embodiment 3 of the present invention has a lens carrier 11 for fixing the lens body 80. Further, similarly to the movable body of the lens driving device 100A according to embodiment 1, a step 113 is formed at a position corresponding to the recess 63 formed on the inner surface of the housing 60, and a protrusion 111 directly facing the recess 63 with a gap therebetween is provided. Similarly, at least a part of the protrusion 111 may be formed by the lens body 80. The lens carrier 11 may have a lens carrier main body 112 and a protrusion 111 formed corresponding to the lens body 80, and the protrusion 111 may be erected from both sides of the lens body 80 of the lens carrier main body 112 in the Y-axis direction. Further, the width of the protruding portion 111 in the Y axis direction is preferably narrower than the width of the recessed portion 63. Further, a magnet 140 is attached to the outer surface of one side wall of the lens carrier 11.
In addition, the intermediate comprises: a 1 st base 15 for accommodating the movable body so as to be movable in the X-axis direction; and the 1 st and 2 nd shield cases 37 and 38 formed in a shape of "Contraband" (U-shape) so as to fit the side walls on both sides of the 1 st base 15 in the Y-axis direction. The movable body is supported movably in the X-axis direction by the 1 st and 2 nd AF supporting plate springs 25 and 26 provided in front and rear of the lens carrier 11, and is accommodated in the 1 st base 15. The lower end portions of the U-shaped 1 st and 2 nd AF supporting plate springs 25 and 26 may be fixed to the lower portions of the front and rear walls of the lens carrier 11, and the upper end portions of the U-shaped 1 st and 2 nd AF supporting plate springs 25 and 26 may be fixed to the upper portions of the inner surfaces of the front and rear walls of the 1 st base 15, or conversely, the lower end portions of the U-shaped 1 st and 2 nd AF supporting plate springs 25 and 26 may be fixed to the lower portions of the front and rear walls of the 1 st base 15, and the upper end portions of the U-shaped 1 st and 2 nd AF supporting plate springs 25 and 26 may be fixed to the upper portions of the outer surfaces of the front and rear walls of the lens carrier 11. These fixing methods may be performed by an adhesive, or by providing a concave groove in the corresponding wall surface and fitting the 1 st and 2 nd AF supporting plate springs 25 and 26 into the concave groove (fig. 3 shows only the AF supporting plate spring 26, and fig. 4 shows the AF supporting plate spring 25).
The 1 st base 15 is also made of a resin material and is a box-like body opened upward and/or downward. The box-like body accommodates the movable body, and through holes are formed in front and rear walls thereof, respectively, to form an optical path in the X-axis direction (see fig. 4). Further, the coil block 14 is attached to one side wall of the 1 st base 15 facing the magnet 140 attached to the outer side surface of the one side wall of the lens carrier 11. The coil assembly 14 has a drive circuit substrate 143 and a coil 142. The magnet 140 is disposed at a position facing the coil 142 of the coil block 14. Therefore, when a current flows through the coil 142, an electromagnetic force that is intended to move in the X-axis direction is generated in the coil 142, and a reaction force is applied to the magnet, thereby moving the movable body in the X-axis direction.
The 1 st and 2 nd shield cases 37 and 38 function as a protective cover and a shield cover, and are configured to not only fit over the side walls on both sides of the 1 st base 15 in the Y-axis direction, but also project toward the movable body side so as to face a part of the lens carrier body 112 with a gap necessary for the movement of the movable body interposed therebetween. One ends of the OIS support plate springs 35 and 36 are fixed to the outer side surfaces of the 1 st and 2 nd shield cases 37 and 38 on both left and right sides, and the other ends of the OIS support plate springs 35 and 36 are fixed to the 2 nd base 17, whereby the intermediate body can be supported so as to be movable in the Y-axis direction. By inserting and fixing the assembly of these components into the housing 60, the intermediate body can be accommodated so as to be movable in the Y-axis direction.
The frame 60 may have a recessed portion 63 formed on an inner surface extending in the X-axis direction and the Y-axis direction orthogonal to the X-axis direction, as in the lens driving device 100A according to embodiment 1 shown in fig. 1, or may have an opening provided in at least one of the upper wall 61 and the lower wall 62 of the frame body 64 and a lid provided outside the frame body 64 so as to cover the opening, as in the lens driving device 100B according to embodiment 2 shown in fig. 2. Further, the frame 60 may include an upper frame and a lower frame in a shape of "Contraband" (U-shape) in which the recessed portion 63 is formed on the inner side surface extending in the X-axis direction and the Y-axis direction orthogonal to the X-axis direction, and the frame 60 may be formed by fitting and fixing the upper frame and the lower frame in the vertical direction. As shown in fig. 3, the frame 60 may include an upper frame body 67, a lower frame body 68, an upper cover 65, and a lower cover 66, wherein the upper frame body 67 and the lower frame body 68 are provided with openings, respectively, the upper cover 65 and the lower cover 66 are provided outside the upper frame body 67 and the lower frame body 68 so as to cover the openings, respectively, and the upper frame body 67 and the lower frame body 68 are fitted and fixed in the vertical direction. Similarly, the lid body is preferably made of stainless steel, and may be bonded to each frame body so as to cover the opening. Thus, the recessed portion 63 is formed by an opening provided in each housing body and a lid provided outside each housing body.
Next, the lens driving device 100D according to embodiment 4 of the present invention will be described in detail with reference to fig. 4 and 5. Fig. 4 is an exploded perspective view showing a lens driving device 100D according to embodiment 4 of the present invention, and fig. 5 is a partial sectional view of the lens driving device shown in fig. 4, as viewed from the front, after combination.
As shown in fig. 4 and 5, the movable body of the lens driving device 100D according to embodiment 4 of the present invention includes a lens carrier 11 for fixing the lens body 80. Similarly, the lens carrier 11 is made of a resin material and is formed into a box-like body having an upper opening. The lower opening may be open. In addition, in order to form the optical path in the X-axis direction, notches are formed in the walls in front and rear of the lens carrier 11. In the present embodiment, the lens body 80 is housed inside the box-shaped body of the lens carrier 11 from above. Further, on the outer side surfaces of the side walls on both sides of the lens carrier 11, the 1 st and 2 nd AF coils 21 and 22 are attached.
The movable body is accommodated in the intermediate body so as to be movable in the X-axis direction, and the intermediate body includes a 1 st base 15 and 1 st and 2 nd shield cases 37 and 38 formed in a shape of "Contraband" (U-shape) so as to fit over side walls on both sides of the 1 st base 15 in the Y-axis direction. The 1 st base 15 is also made of a resin material and is a box-like body having an upper opening. The lower opening may be open. The movable body is supported by the box-like body of the 1 st base 15 by the 1 st and 2 nd AF supporting plate springs 25, 26 provided in the front and rear of the lens carrier 11. Further, through holes are formed in front and rear walls of the 1 st base 15 to form an optical path in the X-axis direction. Further, 1 st and 2 nd AF magnets 23 and 24 are provided on the side walls on both sides of the 1 st base 15 so as to face the 1 st and 2 nd AF coils 21 and 22 attached to the outer side surfaces of the side walls on both sides of the lens carrier 11. Therefore, the movable body can be moved in the X-axis direction by energizing the 1 st and 2 nd AF coils 21 and 22, thereby focusing.
In the present embodiment, the 1 st and 2 nd AF coils 21 and 22 are provided on the lens carrier 11, and the 1 st and 2 nd AF magnets 23 and 24 are provided on the 1 st base 15, but conversely, the 1 st and 2 nd AF coils 21 and 22 may be provided on the 1 st base 15, and the 1 st and 2 nd AF magnets 23 and 24 may be provided on the lens carrier 11.
Further, an AF induction magnet (sensing magnet)30 that senses the movement of the lens carrier 11 is provided on one side wall of the 1 st base 15, so that the movement of the lens carrier 11 can be controlled.
The side walls on both left and right sides in the Y axis direction of the 1 st base 15 are covered with the 1 st and 2 nd shield cases 37 and 38 formed in a shape of "Contraband" (U-shape) and functioning as a protective cover and a shield cover.
One end of each of the 1 st and 2 nd OIS supporting plate springs 35 and 36 is fixed to the 1 st and 2 nd shield cases 37 and 38 or the 1 st base 15, and the other end of each of the 1 st and 2 nd OIS supporting plate springs 35 and 36 is fixed to the 2 nd base 17 disposed behind the 1 st base 15. Therefore, the intermediate body is supported by the 2 nd base 17 so as to be movable in the Y-axis direction. Further, the 2 nd base 17 is accommodated and fixed in the housing 60. In order to move the intermediate body in the Y-axis direction, in the present embodiment, the 1 st and 2 nd OIS magnets 33 and 34 are provided at both ends of the 1 st base 15 in the Y-axis direction, and the 1 st and 2 nd OIS coils 31 and 32 are provided on the 2 nd base 17 via the drive circuit board 40 so as to face the 1 st and 2 nd OIS magnets 33 and 34. Therefore, when a current flows through the 1 st and 2 nd OIS coils 31 and 32, electromagnetic force is generated in the 1 st and 2 nd OIS coils 31 and 32 to move in the Y-axis direction. When electromagnetic force is generated in the 1 st and 2 nd OIS coils 31 and 32, the 1 st base 15 moves against the 1 st and 2 nd OIS supporting plate springs 35 and 36, and shake generated during photographing can be optically corrected.
As shown in fig. 4, the 1 st and 2 nd OIS support plate springs 35 and 36 respectively include: a moving-side mounting part mounted on the 1 st and 2 nd shield cases 37 and 38 or the 1 st base 15; a fixed-side mounting portion mounted to the 2 nd base 17; and an annular elastic part connecting the movable side mounting part and the fixed side mounting part. The elastic portion is annular in fig. 4, but is not limited to this shape, and may be rectangular, hexagonal, U-shaped, or the like.
In the example shown in fig. 4, the assembly is accommodated in the housing 60 from an opening at the rear end. A prism 50 is provided at the front end of the housing 60, and light incident on the prism 50 from the subject is reflected by the prism 50 with its optical axis bent by 90 °, and is condensed by the lens of the lens body 80, and is detected by a light receiving sensor (not shown) provided on the rear side. The AF function or the OIS function can be realized by moving the movable body based on the detection data of the light receiving sensor.
The frame 60 includes a frame body 64, an upper cover 65, and a lower cover 66. The upper wall 61 and the lower wall 62 of the housing main body 64 are provided with openings, but any one of the upper walls may be opened. A cover is provided on the outer side of the frame body 64 so as to cover the opening. The cover is preferably made of stainless steel, and may be bonded to the frame body 64 so as to cover the opening. Thus, as shown in fig. 5, the recessed portion 63 is formed by an opening provided in the housing main body 64 and an inner surface of the lid body provided outside the housing main body 64.
Further, as shown in fig. 5, the upper lid 65 may be disposed on the upper wall 61 of the housing main body 64 so as to fill the collapsed portion by collapsing the left and right edges of the opening in the Y-axis direction inward. In this case, the upper surface of the upper lid 65 is preferably flush with the upper surface of the upper wall 61 of the housing main body 64. Although the upper wall 61 of the housing body 64 has been described above, the lower wall 62 of the housing body 64 may have a similar structure. The thickness of the lid is preferably thinner than the thickness of the housing main body 64. Further, the opening may have a size larger than both the X-axis direction and the Y-axis direction of the lens body 80, and the sizes of the upper cover 65 and the lower cover 66 may be sufficient to completely cover the lens body 80.
Although some embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the embodiments, and may be designed without departing from the scope of the present invention.
For example, the structures in embodiments 1 to 4 can be replaced or combined with each other. Specifically, the structure of the housing 60 in each embodiment may be shared. The recess 63 of the housing 60 may be provided in one or both of the upper wall 61 and the lower wall 62. Similarly, an opening may be provided in one or both of the upper wall 61 and the lower wall 62 of the housing main body 64. Further, the structure in which the left and right edges of the opening of the housing main body 64 in embodiment 4 are collapsed inward and the lid body is disposed so as to fill the collapsed portion can be applied to each of the above-described embodiments.
Although the movable body is driven by 1 coil 142 and 1 magnet 140 in embodiments 1 and 2, the movable body may be driven by two coils and two magnets as in embodiments 3 and 4. Further, the arrangement positions of the coil and the magnet may be changed.
Further, although the intermediate body of the lens driving device 100C accommodates the movable body so as to be movable in the X-axis direction and the frame body 60 accommodates the intermediate body so as to be movable in the Y-axis direction in embodiment 3, the movable body may be accommodated so as to be movable in the Y-axis direction and the intermediate body may be accommodated so as to be movable in the X-axis direction in the frame body 60.
Similarly, a predetermined gap required for the movement of the movable body needs to be provided between the frame and the intermediate body in the Z-axis direction.
Further, the lens carrier 11 of each embodiment may have a lens carrier main body 112 and a protrusion 111 formed corresponding to the lens body 80, and the protrusion 111 may rise from both sides of the lens body 80 of the lens carrier main body 112 in the Y-axis direction, and a predetermined gap necessary for the movement of the movable body may be provided between the frame body and the intermediate body in the Z-axis direction.
Next, an application example of the present invention will be explained. The lens driving devices 100A, 100B, 100C, and 100D of the present invention may be incorporated in a camera device. By forming the recessed portion on the inner side surface of the frame and forming the step at the position corresponding to the recessed portion on the movable body, the camera device can be provided with the protruding portion directly facing the recessed portion with a gap therebetween, and even if the height of the entire frame is reduced in accordance with the step, the gap required for the movement of the movable body can be secured, and the camera device can be reduced in height.
The present invention also provides an electronic device including a camera device including any one of the lens driving devices 100A, 100B, 100C, and 100D. Examples of the electronic device include a mobile terminal such as a smartphone, a game machine, and a personal computer. These portable terminals may include a camera device including the lens driving device 1.
Claims (12)
1. A lens driving device is characterized by comprising:
a movable body having a lens carrier for fixing the lens body; and
a frame body for accommodating the movable body so as to be movable in an X-axis direction which is an optical axis direction of the lens body,
the frame body has an inner side surface extending in the X-axis direction and a Y-axis direction orthogonal to the X-axis direction,
a gap is provided between the inner side surface of the frame and the movable body in a Z-axis direction orthogonal to the X-axis direction and the Y-axis direction,
a recessed part is formed on the inner side surface of the frame body,
the movable body has a protruding portion protruding with a step from both end portions thereof at a position corresponding to the recessed portion in the center portion in the Y-axis direction, and the protruding portion directly faces the recessed portion.
2. The lens driving apparatus as claimed in claim 1, wherein: the lens body forms at least a portion of the protrusion.
3. The lens driving apparatus as claimed in claim 1, wherein:
the lens carrier has a lens carrier main body and the protruding portion formed corresponding to the lens body,
the protruding portions stand from both sides of the lens body of the lens carrier main body in the Y-axis direction.
4. The lens driving apparatus as claimed in claim 3, wherein: the width of the protruding portion in the Y-axis direction is narrower than the width of the recessed portion.
5. The lens driving apparatus as claimed in claim 1, wherein:
the frame body is provided with a frame body and a cover body,
the recessed portion is formed by an opening provided in the frame body and the lid body provided outside the frame body and covering the opening.
6. The lens driving apparatus as claimed in claim 5, wherein: the thickness of the cover body is thinner than that of the frame body.
7. The lens driving apparatus as claimed in claim 5, wherein: the opening has a size larger than both the X-axis direction and the Y-axis direction of the lens body.
8. The lens driving apparatus as claimed in claim 1, wherein:
also comprises an intermediate body which is a mixture of the two,
the intermediate body accommodates the movable body such that the movable body is movable in the X-axis direction with respect to the intermediate body,
the frame body accommodates the intermediate body such that the intermediate body is movable in the Y-axis direction.
9. The lens driving apparatus as claimed in claim 1, wherein:
also comprises an intermediate body which is a mixture of the two,
the intermediate body accommodates the movable body such that the movable body is movable in the Y-axis direction with respect to the intermediate body,
the frame body accommodates the intermediate body so that the intermediate body can move in the X-axis direction.
10. The lens driving apparatus as claimed in claim 8 or claim 9, wherein:
the lens carrier has a lens carrier main body and the protruding portion formed corresponding to the lens body,
the protruding portions stand from both sides of the lens body of the lens carrier main body in the Y-axis direction,
in the Z-axis direction, a gap is provided between the intermediate body and the lens carrier body.
11. A camera device provided with the lens driving device according to any one of claims 1 to 10.
12. An electronic device provided with the camera device according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019184.0A CN110873942A (en) | 2018-09-03 | 2018-09-03 | Lens driving device, camera device, and electronic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019184.0A CN110873942A (en) | 2018-09-03 | 2018-09-03 | Lens driving device, camera device, and electronic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110873942A true CN110873942A (en) | 2020-03-10 |
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ID=69716633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811019184.0A Pending CN110873942A (en) | 2018-09-03 | 2018-09-03 | Lens driving device, camera device, and electronic apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN110873942A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089583A (en) * | 2021-11-30 | 2022-02-25 | 新思考电机有限公司 | Lens driving device, camera module and electronic equipment |
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2018
- 2018-09-03 CN CN201811019184.0A patent/CN110873942A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089583A (en) * | 2021-11-30 | 2022-02-25 | 新思考电机有限公司 | Lens driving device, camera module and electronic equipment |
| CN114089583B (en) * | 2021-11-30 | 2023-09-19 | 新思考电机有限公司 | Lens driving device, camera module and electronic equipment |
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