JP2019045863A - Lens blade driving device - Google Patents

Abstract

To provide a lens blade driving device which couples a blade drive unit with a lens frame to integrally move the lens frame and the blade drive unit, and which prevents a flexible wiring board for supplying power to the blade drive unit from interfering with the movement of the lens frame.SOLUTION: A lens blade driving device comprises: a lens fame for holding a lens; a blade drive unit integrally coupled with the lens frame and configured to drive blades for controlling light transmitting through the lens; and a base member configured to support the blade drive unit in a manner that allows the blade drive unit to move along an optical axis of the lens. A flexible wiring board having one end connected to the blade drive unit is laid to overlap the blade drive unit. A portion of the flexible wiring board overlapping the blade drive unit includes an excess portion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lens blade drive device for driving a lens and a blade.

  There is known a device (lens blade driving device) for focus driving a lens frame by integrally connecting a blade driving unit for driving a diaphragm blade to a lens frame (lens barrel) for holding a lens (see Patent Document 1 below) ).

  The blade drive unit in this lens blade drive apparatus has a slit in which the projection of the base plate having an opening is provided in the lens frame by projecting a part of the base plate containing the diaphragm blade from the frame in which the electromagnetic actuator is built. And the opening of the ground plane is arranged to pass through the optical axis of the lens. The frame of the blade drive unit is mechanically coupled to the lens frame, and the lens frame is movably supported by the outer frame in the optical axis direction of the lens, and a magnet and lens frame fixed to the side surface of the lens frame The lens frame integral with the blade driving unit is moved along the optical axis direction by the lens driving unit including the drive coil provided on the outer frame supporting the lens.

JP, 2017-40814, A

  Since the lens blade drive device described above moves the blade drive unit mechanically coupled to the lens frame integrally when moving the lens frame, the power supply to the blade drive unit corresponds to the movement of the blade drive unit. It can be performed via a flexible printed circuit (FPC) that can be flexibly followed.

  In such a lens blade drive device, there is a problem that the deformation resistance of the flexible wiring substrate hinders the movement of the lens frame. If the remaining length of the flexible wiring substrate is increased to avoid this, the lens blade drive device is surrounded. A large space is required to arrange the extra length of the flexible wiring board. On the other hand, the lens blade drive device equipped in a small electronic device such as a mobile electronic device severely limits the space that can be occupied for installation, so the space for accommodating the extra length of the flexible wiring board is a lens There is a problem that it can not be secured around the blade drive device.

  The present invention is proposed to address such problems. That is, in the lens blade drive apparatus in which the blade drive unit is coupled to the lens frame and the lens frame and the blade drive unit are integrally moved, the flexible wiring board for supplying power to the blade drive unit hinders the movement of the lens frame. It is an object to prevent such problems and to save an extra-long storage space of the flexible wiring board from the periphery of the lens blade driving device.

  In order to solve such a subject, the present invention comprises the following composition.

  A lens frame for holding a lens, a blade drive unit integrally coupled to the lens frame and driving a blade for limiting light transmitted through the lens, and the blade drive unit being movable along the optical axis of the lens And a flexible wiring board, one end of which is connected to the blade driving unit, is overlapped with the blade driving unit and accommodated, and the flexible wiring substrate has an extra length in a portion overlapping with the blade driving unit. A lens blade driving device comprising:

  A lens frame for holding a lens, a blade drive unit integrally coupled to the lens frame and driving a blade for limiting light transmitted through the lens, and a mounting surface on which the blade drive unit is mounted A flexible wiring board having a lens frame and a base member for supporting the blade drive movably along the optical axis of the lens, the flexible wiring board whose one end side is connected to the blade drive is in a folded state A lens blade driving device characterized in that it is housed above.

FIG. 1 is an exploded perspective view of a lens blade driving device according to an embodiment of the present invention. The side view ((a) of the lens blade drive device according to the embodiment of the present invention shows the non-operating state of the lens frame and (b) shows the operating state of the lens frame). It is the side view which showed the lens blade drive device which concerns on other embodiment of this invention. Explanatory drawing ((a) of a flexible wiring board is a rear view, (b) is a top view). Explanatory drawing which shows operation | movement of a blade | wing drive device ((a) is at the time of diaphragm light quantity maximum, (b) is at the time of diaphragm light quantity minimum). FIG. 16 is an exploded perspective view of a lens blade driving device according to another embodiment of the present invention (an example in which a driver IC integrated with a Hall element is provided on a flexible wiring board). It is an assembly drawing ((a) is a top view and it is an AA sectional view in (b) and (a)) of the lens blade drive device shown in FIG. FIG. 16 is an exploded perspective view of a lens blade driving device according to another embodiment of the present invention (an example in which a Hall element and a driver IC are arranged on a flexible wiring board). Explanatory drawing ((a) is a top view, (b) is a side view) which showed the other structural example of the flexible wiring board in a lens blade drive device. Explanatory drawing which showed operation | movement of the lens-blade drive device provided with the flexible wiring board shown in FIG. 9 ((a) is a non-operation time, (b) is an operation time). Explanatory drawing ((a) is a top view, (b) is a side view) which showed the other structural example of the flexible wiring board in a lens blade drive device. Explanatory drawing which showed operation | movement of the lens-blade drive device provided with the flexible wiring board shown in FIG. 11 ((a) is a non-operation time, (b) is an operation time). It is a disassembled perspective view of the lens-blade drive device which concerns on other embodiment of this invention. It is a disassembled perspective view of the lens-blade drive device which concerns on other embodiment of this invention. FIG. 14 is an explanatory view showing another configuration example of the flexible wiring board in the lens blade driving device ((a) is an example shown in FIG. 13, (b) is an example shown in FIG. 14). FIG. 14 is an explanatory view ((a) shows the time of non-operation, (b) shows the operation) showing the operation of the lens blade driving device provided with the flexible wiring board shown in FIG. 13 or FIG. 14; It is a disassembled perspective view of the lens-blade drive device which concerns on other embodiment of this invention. (A) is an explanatory view showing an imaging device provided with a lens blade drive device according to an embodiment of the present invention, and (b) is a portable electronic device provided with a lens blade drive device according to an embodiment of the present invention (Portable information terminal)

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same reference numerals in different drawings denote parts having the same functions, and redundant description in each drawing will be appropriately omitted.

  As shown in FIGS. 1 and 2, the lens blade driving device 1 includes a lens frame 2 for holding one or more lenses, a blade driving portion 3, a first base member 4, and a flexible wiring board 5. ing. The blade driving unit 3 is integrally coupled to the lens frame 2 and drives the blades 6 and 7 that limit light transmitted through the lens held by the lens frame 2. The first base member 4 includes a mounting surface 4A on which the blade drive unit 3 is mounted, and supports the lens frame 2 and the blade drive unit 3 movably along the optical axis of the lens held by the lens frame 2 doing. One end side of the flexible wiring board 5 is connected to the blade driving unit 3, and the remaining length portion provided in a portion overlapping with the blade driving unit 3 is folded to place on the mounting surface 4A of the first base member 4 (that is, Between the blade drive unit 3 and the first base member 4 is accommodated in the blade drive unit 3).

  Such a lens blade drive device 1 is a flexible wiring board 5 for supplying power to the blade drive unit 3 when the lens frame 2 and the blade drive unit 3 are integrally moved with respect to the first base member 4. The first base member 4 is accommodated on the placement surface 4A of the first base member 4 in a folded state so as to overlap the third position 3. As a result, even if the flexible wiring board 5 is relatively long, there is no need to provide an extra length storage space for the flexible wiring board 5 around the lens blade driving device 1.

  In the lens blade driving device 1, as shown in FIG. 2A, the blade driving portion 3 is mounted on the mounting surface 4A of the first base member 4 when the lens frame 2 is not in operation. The substrate 5 is accommodated in a state of being folded 180 degrees while being sandwiched between the first base member 4 and the blade driving portion 3 on the mounting surface 4A. Then, at the time of the operation of the lens frame 2, as shown in FIG. 2B, the folding angle of the flexible wiring board 5 folded following the movement of the lens frame 2 changes. Under the present circumstances, the flexible wiring board 5 makes the deformation resistance at the time of a change of a folding angle small by making curved part 5A curved. As a result, the lens frame 2 can move without receiving any deformation resistance of the flexible wiring board 5, and the flexible wiring board 5 is prevented from obstructing the movement of the lens frame 2.

  Hereinafter, the configuration of each part will be specifically described. As shown in FIG. 1, in the blade drive unit 3, a thin-walled blade housing 12, 13 is disposed between the second base member 10 and the cover 11, and a space between the blade housings 12, 13. Two blades 6 and 7 are disposed in the blade chamber 14. The second base member 10 is provided with a shaft 10A, and a lever member 15 is pivotally supported by the shaft 10A. The lever member 15 has an axial hole 15A at the center through which the shaft 10A is inserted, and connecting portions 15B and 15C are provided at both left and right ends. Further, magnet holding portions 15D and 15E are provided on the left and right of the shaft hole 15A in the lever member 15, and the magnets 16 and 17 are respectively held by the magnet holding portions 15D and 15E.

  In the second base member 10, the flat coil 18 is disposed on the back side of the lever member 15 pivotally supported by the shaft 10A, and furthermore, the yokes 19 and 20 include the flat coil 18 and the second base member 10 Is placed between. Further, a position sensor (magnetic sensor) for detecting the rotational position of the lever member 15 is connected to the flexible wiring board 5.

  The second base member 10 and the cover 11 are provided with recessed portions 10S and 11S that accommodate a part of the lens frame 2. Further, the blade driving unit 3 includes a fixing member 21 which holds and fixes the lens frame 2 accommodated in the concave portions 10S and 11S together with the second base member 10.

  The blade housings 12 and 13 have protrusions 12A and 13A that project into the recesses 10S and 11S, and the protrusions 12A and 13A are provided with openings 12B and 13B coaxially arranged. The protrusions 12A and 13A are inserted into the slits 2S of the lens frame 2 accommodated in the recesses 10S and 11S, and the openings 12B and 13B are disposed on the optical axis of the lens held by the lens frame 2.

  The blades 6, 7 disposed in the blade chamber 14 between the blade housings 12, 13 are provided with the throttle openings 6A, 7A overlapping the openings 12B, 13B. Further, the blades 6, 7 are provided with long hole shaped guide holes 6B, 7B through which the guide projections 10B, 10C of the second base member 10 are inserted, and further, the connecting portions 15B, 15C of the lever member 15 are provided. The connecting holes 6C and 7C which connect are provided.

  The wing housings 12, 13 and the cover 11 are provided with holes 12P, 13P, 11P for allowing movement of the connecting portions 15B, 15C of the lever member 15, and the guide projection 10B of the second base member 10, Insertion holes 12Q, 13Q, 11Q through which 10C is inserted are provided. Further, the blade housings 12 and 13 and the cover 11 are provided with coupling holes 12R, 13R and 11R through which the coupling projections 10R of the second base member 10 are inserted.

  In the first base member 4, an opening 4 </ b> B facing the lens held by the lens frame 2 is provided in the mounting surface 4 </ b> A. Further, the first base member 4 is provided at one end side of the mounting surface 4A with a support portion 4C which movably supports the fixing member 21 described above. The support portion 4C is provided with a guide groove 4D extending along the optical axis of the lens held by the lens frame 2. Further, the fixing member 21 is also provided with a guide groove 21A facing the guide groove 4D, and the bearing 22 is interposed between the guide groove 4D and the guide groove 21A, so that the fixing member 21 is opposed to the support 4C. It is movably supported.

  The magnet 23 is disposed on the fixing member 21, and the drive coil 24 is disposed on the support 4 </ b> C so as to face the magnet 23. The magnet 23 and the drive coil 24 constitute an electromagnetic actuator that moves the lens frame 2 in the optical axis direction of the lens by energization of the drive coil 24. A lens driving terminal 25 connected to the driving coil 24 is provided at an end of the first base member 4 on the support 4 </ b> C side. In the illustrated example, the magnet 23 is provided on the fixed member 21 side, and the drive coil 24 is provided on the support 4C side of the first base member 4. Conversely, the drive coil 24 is provided on the fixed member 21 side. , And the magnet 23 may be provided on the support 4C side of the first base member 4. In that case, the drive coil 24 is energized via the flexible wiring board 5.

  As described above, the flexible wiring board 5 is in a folded state on the mounting portion 4A of the first base member 4, and one end of the flexible wiring board 5 is connected to the flat coil 18 disposed in the second base member 10. Connected through. The flat coil 18 together with the magnets 16 and 17 held by the lever member 15 constitute an electromagnetic actuator for driving the blades 6 and 7.

  Further, as shown in FIG. 2, in the flexible wiring board 5, the folded back portion 5 </ b> A folded back in a curved shape is accommodated in the accommodation portion 21 </ b> B provided in the fixing member 21. The housing portion 21B is a space provided for housing the folded-back portion 5A in a state in which the bent state is maintained, and may be provided on the fixing member 21 side as shown in FIG. 2, but the first base member 4 side It may be provided in Further, as shown in FIG. 3, the curved folded portion 5A may be disposed in a space in which the housing portion 21B provided on the fixing member 21 side and the housing portion 4F provided on the first base member 4 side are combined.

  As described above, by accommodating the folded back portion 5A of the flexible wiring board 5 between the first base member 4 and the fixing member 21, the remaining space for storing the flexible wiring board 5 from the periphery of the lens blade driving device 1 can be saved. Can. Further, by providing a space for accommodating the curved folded portion 5A, the radius of curvature of the folded portion 5A can be set large, and the deformation resistance when the folding angle of the flexible wiring board 5 in the folded state changes is minimized. can do.

  As shown in FIG. 4, the flexible wiring board 5 is bifurcatedly disposed so as to avoid the opening 4 B of the first base member 4. Although the flexible wiring board 5 is a thin plate-like body, the flat coil 18 described above is connected to the base end portion on one end side thereof via the connection portion 26, and the left and right symmetry is avoided so as to avoid the opening 4B therefrom. It is divided and extended, provided with a folded portion 5A at the left and right symmetrical position, and further extended in left and right symmetry avoiding the opening 4B, and reaches the base end on the other end side. The connection end 5B is provided at the base end on the other end side, and the connection end 5B is provided on the other end side of the mounting surface 4A of the first base member 4 as shown in FIG. It is connected to the blade drive terminal 27. By arranging the flexible wiring board 5 in a bifurcated manner as described above and arranging the flexible wiring board 5 at symmetrical positions of the opening 4B, the flexible wiring board 5 can be made into a blade without adversely affecting the posture of the moving lens frame 2 It can be connected to the drive unit 3.

  FIG. 5 shows the movement of the blades 6 and 7 of the blade drive unit 3. The blades 6 and 7 apply a driving force to the magnets 16 and 17 held by the lever member 15 by energizing the flat coil 18 constituting the electromagnetic actuator to rotate the lever member 15 about the shaft 10A. Drive. The blade 6 is connected to the connecting portion 15B of the lever member 15 at a connecting hole 6C, and the guide projection 10B of the second base member 10 is inserted into a guide hole 6B extended in a uniaxial direction. Further, the blade 7 is connected to the connecting portion 15C of the lever member 15 by the connecting hole 7C, and the guide projection 10B of the second base member 10 is inserted into the guide hole 7B extended in one axial direction. As a result, when the lever member 15 pivots about the shaft 10A, the blades 6 and 7 slide in opposite directions in one axial direction, and the overlapping degree of the diaphragm openings 6A and 7A overlapping the openings 12B and 13B. Is appropriately adjusted, and the amount of light transmitted through the openings 12B and 13B is adjusted.

  In the illustrated example, the blades 6 and 7 indicate examples of diaphragm blades, but the blades 6 and 7 are not limited to this, and shutter blades that block light passing through the lens and light passing through the lens It may be an optical filter that selectively transmits light. At this time, the number of blades is appropriately set according to the application.

  6 and 7 show an example in which the driver IC 30 is disposed on the flexible wiring board 5 in the lens blade driving device 1 described above. The driver IC 30 is connected to the feed path to the blade driving unit 3 in the flexible wiring board 5. In the example shown in FIG. 6, the driver IC 30 is provided with an integrated Hall element for detecting the movement of the blades 6 and 7 by detecting the movement of the lever member 15 to which the magnets 16 and 17 are attached. ing.

  On the other hand, in the example shown in FIG. 8, the driver IC 30 and the Hall element 31 are separately provided on the flexible wiring board 5 in the lens blade driving device 1 described above. Also in this case, the driver IC 30 and the Hall element 31 are connected to the feed path to the blade driving unit 3 in the flexible wiring board 5.

  According to the lens blade drive device 1 shown in FIGS. 6 to 7, by arranging the driver IC 30 on the flexible wiring board 5 for supplying power to the blade drive unit 3, drive adjustment is performed on each unit in the blade drive unit 3. Since the adjustment result can be stored in the driver IC 30, the adjustment for each unit can be omitted in the imaging device in which the lens blade driving device 1 is mounted or in the portable electronic device in which the imaging device is mounted. Further, in the case where the Hall element 31 is provided, it is possible to reduce the number of connection terminals between the lens blade driving device 1 and the imaging device mounted thereon.

  FIG. 9 and FIG. 10 show another configuration example of the flexible wiring board 5 in the lens blade driving device 1. In this example, in the flexible wiring board 5, the portion from the connection end portion 5B to the folding back portion 5A is divided into two wiring paths sandwiching the lens frame 2, and a flat curved portion 5C is formed in that portion. Thus, the curved portion 5C is formed as one extra length portion 50 overlapping the blade driving portion 3.

  In the flexible wiring board 5 shown in FIG. 9, the wiring path divided into two from the connection end 5B extends in a plane from the connection end 5B to the folding portion 5A via the plurality of curved portions 5C, and is folded back at the folding portion 5A. Two wiring paths lead to the connection portion 26. Further, the connecting portion 26 connected to the blade driving portion 3 is disposed inside the blade driving portion 3 in a state where the vicinity thereof is bent by the bending portion 5D.

  When the lens frame 2 is not in operation, the lens blade drive device 1 including the flexible wiring substrate 5 shown in FIG. 9 drives the blade onto the mounting surface 4A of the first base member 4 as shown in FIG. The portion 3 is mounted, and the flexible wiring board 5 is folded 180 degrees and is held between the first base member 4 and the blade driving portion 3 on the mounting surface 4A and the blade driving portion 3 and Overlapped and housed. Then, at the time of the operation of the lens frame 2, as shown in FIG. 10B, the folding angle of the flexible wiring board 5 folded following the movement of the lens frame 2 changes. At this time, in the flexible wiring board 5, the deformation resistance at the time of changing the folding angle is reduced by forming the bent portion 5A in a curved shape and providing the curved portion 5C. As a result, the lens frame 2 can move without receiving any deformation resistance of the flexible wiring board 5, and the flexible wiring board 5 is prevented from obstructing the movement of the lens frame 2.

  11 and 12 show another configuration example of the flexible wiring board 5 in the lens blade driving device 1. FIG. In this example, as in the example shown in FIGS. 9 and 10, the flexible wiring board 5 is divided into two wiring paths sandwiching the lens frame 2 from the connection end 5B, and a flat curved portion is formed in that part. 5C is formed, and the curved portion 5C is formed as one extra length portion 50 overlapping the blade driving portion 3.

  In the flexible wiring board 5 shown in FIG. 11, the wiring path divided into two from the connection end 5B is planarly extended to the bending portion 5D1 via the plurality of bending portions 5C and is bent at the bending portion 5D1. The flexible wiring board 5 is disposed along the outer periphery of the blade driving portion 3 up to the bending portion 5D2, and the bending portion 5D2 and thereafter are disposed inside the blade driving portion 3 and reach the connection portion 26. Further, the connection portion 26 connected to the blade driving unit 3 is disposed inside the blade driving unit 3.

  When the lens frame 2 is not in operation, the lens blade drive device 1 having the flexible wiring board 5 shown in FIG. 11 drives the blade onto the mounting surface 4A of the first base member 4 as shown in FIG. The portion 3 is mounted, and in the flexible wiring board 5, the wiring portion disposed along the outer periphery of the blade driving portion 3 is sandwiched between the first base member 4 and the blade driving portion 3 on the mounting surface 4A. In this state, the blade drive unit 3 is accommodated so as to overlap. Then, when the lens frame 2 is in operation, as shown in FIG. 12B, the wiring portion disposed along the outer periphery of the blade drive unit 3 following the movement of the lens frame 2 is the outer periphery of the blade drive unit 3 The inclination angle of the wiring portion between the bend 5D1 and the bend 5D5 changes. Under the present circumstances, the flexible wiring board 5 makes small deformation resistance at the time of an inclination angle changing by providing the curved part 5C and several bending part 5D1-5D5. As a result, the lens frame 2 can move without receiving any deformation resistance of the flexible wiring board 5, and the flexible wiring board 5 is prevented from obstructing the movement of the lens frame 2.

  The lens blade driving device 1 shown in FIGS. 13 to 17 is an example in which the blade (one blade) 6 is driven to adjust the amount of light passing through the lens in two steps. In this example, one blade 6 is disposed in a blade chamber (thin space) formed between the blade housings 12 and 13 to be bonded together via the spacer 32, and the position of the opening 6A of the blade 6 However, the blade 6 performs switching operation in two stages at a position completely overlapping the openings 12B and 13B of the blade housings 12 and 13 and a position at which the blade 6 itself does not overlap the openings 12B and 13B. The blades 6 are driven by a drive unit 40 including a rotary lever 41 having a magnet 42 at its center, a yoke 43 surrounding the rotary lever 41 in a U-shape, and a coil 44 wound around the yoke 43.

  In the flexible wiring board 5 shown in FIGS. 13 and 15 (a), the wiring path divided into two from the connection end 5B extends planarly to the connection 26 through the plurality of curved portions 5C. Thus, the extra length portion 50 is formed at a position overlapping with the blade driving portion 3. Further, in the flexible wiring board 5 shown in FIGS. 14 and 15 (b), one wiring path extending from the connection end 5B is divided into two wiring paths in a T shape, and each of them is through the curved portion 5C. The remaining portion 50 is formed at a position overlapping the blade driving portion 3 by extending to the connecting portion 26 in a planar manner.

  When the lens frame 2 is not in operation, the lens blade driving device 1 including the flexible wiring substrate 5 shown in FIGS. 13 to 15 is on the mounting surface 4A of the first base member 4 as shown in FIG. The flexible wiring board 5 is accommodated between the first base member 4 and the blade driving unit 3 so as to overlap with the blade driving unit 3 and accommodated, and a bent portion in the vicinity of the connection end 5B It is horizontal at 5D, extends flat as it is, and reaches the connection portion 26. Then, at the time of operation of the lens frame 2, as shown in FIG. 16B, the inclination angle of the wiring portion between the curved portion 5C and the bending portion 5D changes following the movement of the lens frame 2. Under the present circumstances, the flexible wiring board 5 makes small deformation resistance at the time of an inclination angle changing by providing the curved part 5C and the bending part 5D. As a result, the lens frame 2 can move without receiving any deformation resistance of the flexible wiring board 5, and the flexible wiring board 5 is prevented from obstructing the movement of the lens frame 2.

  FIG. 17 shows an example in which the driver IC 30 is disposed on the flexible wiring board 5 in the lens blade driving device 1 shown in FIGS. The driver IC 30 is connected to the feed path to the blade driving unit 3 in the flexible wiring board 5. In the example shown in FIG. 17, the flexible wiring board 5 extends from the connecting end 5B to the connecting portion 26 in a planar manner with only one curved portion 5C.

  According to the lens blade drive device 1 shown in FIG. 17, by arranging the driver IC 30 on the flexible wiring board 5 for supplying power to the blade drive unit 3, drive adjustment is performed on each unit in the blade drive unit 3 and the adjustment result Can be stored in the driver IC 30, so that adjustment for each unit can be omitted in the imaging device in which the lens blade driving device 1 is mounted or in the portable electronic device in which the imaging device is mounted.

  FIG. 18A shows an imaging apparatus (camera) 100 including the lens blade driving device 1 described above in (a), and a portable electronic device including a camera unit including the lens blade driving device 1 in (b). A portable information terminal) 200 is shown.

  The lens blade drive device 1 described above does not have the extra length portion of the flexible wiring board 5 disposed therearound, so the lens blade drive device 1 with good space efficiency in the compact imaging device 100 and the portable electronic device 200 where the installation space is highly restricted. It becomes possible to set up. In addition, the lens frame 2 can be moved without receiving much deformation resistance of the flexible wiring board 5, and the flexible wiring board 5 does not adversely affect the posture of the lens frame 2, so the lens frame 2 and the blade driving portion Also in the lens blade driving device 1 which moves the lens unit 3 and 3 integrally, it is possible to exhibit high-precision autofocus performance.

  The lens driving terminal 25 described above may be used as a blade driving terminal, and the blade driving terminal 27 may be used as a lens driving terminal.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and changes in design etc. within the scope of the present invention are not limited. Are included in the present invention. In addition, the respective embodiments described above can be combined with each other by utilizing the techniques of each other unless there is a contradiction or a problem in particular in the purpose, the configuration, and the like.

1: Lens blade drive unit 2: Lens frame 2S: Slit
3: Blade drive unit,
4: 1st base member, 4A: mounting surface, 4B: opening,
4C: support portion, 4D: guide groove, 4F: accommodation portion,
5: flexible wiring board, 5A: folded back portion, 5B: connection end,
5C: curved portion, 5D, 5D1 to 5D5: bent portion, 50: extra length portion,
6, 7: blade, 6A, 7A: iris aperture, 6B, 7B: guide hole,
6C, 7C: Connection hole,
10: second base member, 10A: shaft, 10B, 10C: guide projection,
10R: Coupling projection, 10S: Recess,
11: Cover, 11S: Recess, 12, 13: Blade housing,
12A, 13A: protrusion, 12B, 13B: opening,
11P, 12P, 13P: holes,
11Q, 12Q, 13Q: insertion holes,
11R, 12R, 13R: Coupling hole,
14: wing chamber, 15: lever member, 15A: axial hole, 15B, 15C: connection portion,
15D, 15E: magnet holding portion, 16, 17: magnet,
18: Flat coil, 19 and 20: Yoke,
21: fixing member, 21A: guide groove, 21B: accommodation portion,
22: Bearing, 23: Magnet,
24: drive coil, 25: lens drive terminal,
26: connection portion (flexible wiring board), 27: blade driving terminal,
30: Driver IC, 31: Hall element,
32: Spacer,
40: drive part, 41: rotary lever, 42: magnet, 43: yoke,
44: Coil, 50: Extra length,
100: imaging device, 200: portable electronic device (portable information terminal)

Claims (20)

A lens frame that holds the lens,
A blade driving unit that is integrally coupled to the lens frame and drives a blade that limits light transmitted through the lens;
A base member movably supporting the blade driving unit along an optical axis of the lens;
A flexible wiring board whose one end side is connected to the blade driving portion is accommodated in the blade driving portion so as to be accommodated;
The lens blade driving device according to claim 1, wherein the flexible wiring board includes an extra length portion in a portion overlapping with the blade driving portion.   The lens blade driving device according to claim 1, wherein the extra length portion is a flat curved portion.   The lens blade driving device according to claim 1, wherein the extra length portion is in a folded state.   The connection part connected to the said blade drive part of the said flexible wiring board is arrange | positioned inside the said blade drive part in the state which the vicinity bent | curved, The any one of the Claims 1-3 characterized by the above-mentioned. The lens blade driving device as described.   5. The lens blade driving device according to claim 4, wherein the flexible wiring board is disposed along an outer periphery of the blade driving portion to reach the connection portion. A lens frame that holds the lens,
A blade driving unit that is integrally coupled to the lens frame and drives a blade that limits light transmitted through the lens;
It has a mounting surface on which the blade driving unit is mounted, and a base member that supports the lens frame and the blade driving unit movably along the optical axis of the lens.
A lens blade driving device characterized in that a flexible wiring board whose one end side is connected to the blade driving portion is folded and accommodated on the mounting surface. An opening facing the lens is provided on the mounting surface of the base member.
7. The lens blade driving device according to claim 6, wherein the flexible wiring substrate is disposed in a bifurcated manner avoiding the opening. The blade driving unit includes a recess that receives a portion of the lens frame, and a fixing member that fixes the lens frame received in the recess.
The lens blade drive device according to claim 6 or 7, wherein a receiving portion for receiving the folded portion of the flexible wiring board is provided on one or both of the base member and the fixing member.   The base member is provided with a supporting portion for movably supporting the fixing member at one end side of the mounting surface, and the other end of the mounting surface is connected to an end of the flexible wiring board 9. The lens blade driving device according to claim 8, further comprising a terminal.   In the supporting portion, a driving coil is disposed facing the magnet disposed in the fixing member, and a terminal connected to the driving coil is provided on the supporting portion side of the base member. The lens blade drive device according to claim 9.   The blade driving unit includes a blade housing having a thin projection having an opening, the lens frame includes a slit hole into which the projection is inserted, and the opening of the blade housing is a light of the lens. The lens blade drive device according to any one of claims 1 to 10, which is disposed on an axis.   The lens according to any one of claims 1 to 11, wherein the blade driving unit is provided with an electromagnetic actuator for driving the blade, and the electromagnetic actuator is connected to the flexible wiring board. Blade drive.   The lens blade drive device according to any one of claims 1 to 12, wherein the blade is a diaphragm blade that adjusts an amount of light passing through the lens.   The lens blade driving device according to claim 13, wherein the blade adjusts the amount of light passing through the lens in two steps.   The lens blade drive device according to any one of claims 1 to 12, wherein the blade is a shutter blade that blocks light passing through the lens.   The lens blade drive device according to any one of claims 1 to 12, wherein the blade is an optical filter that selectively transmits light passing through the lens.   The lens blade drive device according to any one of claims 1 to 16, wherein a driver IC connected to a feed path to the blade drive unit is mounted on the flexible wiring board.   The lens blade driving device according to claim 17, wherein a hall element for detecting the movement of the blade is disposed on the flexible wiring substrate integrally or separately from the driver IC.   An imaging device comprising the lens blade driving device according to any one of claims 1 to 18.   The portable electronic device provided with the lens blade drive device of any one of Claims 1-18.

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