JP2009086322A - Vibration isolation unit, photographing unit, and photographing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration isolation unit capable of achieving shortening of dimension in a direction Z, a photographing unit equipped with the vibration isolation unit, and a photographing device equipped with the photographing unit. <P>SOLUTION: A slider SL is disposed above an imaging device holder, so that the slider and an imaging device are arranged side by side in the direction Z. An aperture AP1 spread so that the slider SL may directly face a lens barrel unit 10 is provided on the lens barrel unit 10 side of a vibration isolation unit holder UH2, and an aperture AP2 receiving a fifth lens group L5 projecting from the lens barrel unit holder UH1 is provided on the slider SL. By receiving the fifth lens group by the aperture of the slider arranged three-dimensionally together with the imaging device holder on the imaging device, alignment of the optical axis of a bending optical system on the lens barrel unit side with the optical axis of the imaging device of the vibration isolation unit is eliminated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image stabilization unit used when correcting blur on an image, an image capturing unit including the image stabilization unit, and an image capturing apparatus including the image capturing unit.

  Some image capturing apparatuses have a built-in anti-vibration mechanism in order to suppress disturbance of a captured image caused by a user's camera shake or the like. This anti-vibration mechanism is provided with optical components such as a correction lens or an image sensor that can move in a plane orthogonal to the optical axis, and the correction lens or the image sensor is driven in response to camera shake. Is corrected. Patent Documents 1 and 2 disclose a technique for moving a correction lens among the optical parts, and Patent Document 3 discloses a technique for moving an image sensor of the optical parts. In Patent Document 1 to Patent Document 3, an X drive unit and a Y drive unit each having a voice coil motor along two orthogonal axes in a plane including a correction lens or an image sensor, that is, an X axis and a Y axis, respectively. The correction lens or the image sensor can be moved quickly in the X-axis direction and the Y-axis direction by each drive unit. Patent Document 4 discloses a technique using a piezoelectric element instead of a voice coil motor.

  By the way, in recent digital cameras, subject light incident along the first optical axis extending in the Y direction toward the subject is directed in the direction along the second optical axis extending in the Z direction perpendicular to the Y direction. In many cases, the body is miniaturized by mounting a bending optical system that forms an image by bending.

  When mounting the above image stabilization unit on a digital camera that has been reduced in size and thickness using such a bending optical system, the lens unit and the image pickup element with the bending optical system built therein are moved. It is conceivable that the image pickup unit is configured by separately configuring the image stabilization unit to be coupled and combining them.

However, if the image stabilization unit and the lens barrel unit are connected to form a photographing unit, the two units are configured separately, so that the dimension in the Z direction may increase.
Japanese Patent Laid-Open No. 3-186825 JP 2006-215095 A JP 2005-242325 A JP 2006-243704 A

  In view of the above circumstances, an object of the present invention is to provide a vibration-proof unit that can reduce the dimension in the Z direction, a photographing unit that includes the vibration-proof unit, and a photographing device that includes the photographing unit. To do.

In order to achieve the above object, a vibration isolating unit according to the present invention provides a second object extending in the Z direction perpendicular to the Y direction, which is incident on the first light axis extending in the Y direction toward the object. An imaging device that is coupled to a lens barrel unit having a bending optical system that forms an image by bending in a direction along the optical axis, and that generates an image signal representing the subject by receiving an image of subject light by the bending optical system. A vibration-proof unit that suppresses blur on an image signal by moving the image sensor
The lens barrel unit is
A lens barrel unit holder that is a housing of the lens barrel unit,
A part of the optical components constituting the bending optical system protrudes to the vibration isolation unit side from the lens barrel unit holder,
The anti-vibration unit is
An anti-vibration unit holder that is a housing of the anti-vibration unit;
A first guide shaft extending in a first direction that is one of the Y direction and the X direction perpendicular to both the Z direction and the Y direction and supported by the vibration isolation unit holder; A slider movable in one direction,
Of the X direction and the Y direction, the second guide shaft extends in the other second direction different from the first direction and is supported by the slider, and is movable in the Y direction. An image sensor holder for holding the image sensor;
A Y drive unit for moving the image sensor holder in the second direction;
A first drive unit that moves the slider in the first direction together with the image sensor holder;
The slider is disposed closer to the lens barrel unit than the image sensor holder, and has an opening for receiving a portion protruding from the lens barrel unit holder of an optical component constituting the bending optical system. And

  In the image stabilization unit of the present invention, the image sensor holder is moved directly in the second direction by the second drive unit in the second direction, and the slider is moved in the first direction in the first direction. Accordingly, a configuration is adopted in which the image sensor holder is moved in the first direction together with the slider. With this configuration, the image sensor holder and the slider can be arranged side by side in the Z direction, that is, on the axis of the optical component protruding from the lens barrel unit.

  For this reason, an opening is provided in the slider provided in the image stabilization unit, the slider is disposed closer to the lens barrel unit than the image sensor holder, and a portion protruding from the lens barrel unit holder is the opening of the slider. By inserting, the optical component on the lens barrel unit side can be positioned on the optical axis of the image sensor.

  With the above configuration, after a part of the bending optical system protruding from the image sensor holder, for example, the exit lens is inserted into the opening of the slider provided in the image stabilization unit holder, the position of the image stabilization unit is slightly adjusted in the X and Y directions. Thus, the lens barrel unit holder and the vibration isolating unit can be easily combined, and since there is no need to provide an extra mechanism at the coupling portion, the total Z direction including the lens barrel unit and the vibration isolating unit can be reduced. It becomes possible to shorten the dimensions.

  Here, it is preferable that the anti-vibration unit holder has an opening on the side of the lens barrel unit that is widened so that the slider directly faces the lens barrel unit.

  As a result, the lens barrel unit and the image stabilization unit can be coupled in a simpler manner, so that no extra dimension is required between the lens barrel unit and the image stabilization unit. It is possible to further reduce the total dimension in the Z direction including the unit and the vibration isolation unit.

In addition, the photographing unit of the present invention that achieves the above object provides a second light that extends in the Z direction perpendicular to the Y direction to the subject light that has entered the first optical axis extending in the Y direction toward the subject. A lens barrel unit including a bending optical system that forms an image by bending in a direction along an axis, and an imaging device that generates an image signal representing the subject by receiving imaging of the subject light by the bending optical system. An imaging unit including an image stabilization unit that suppresses blur on an image signal by moving an image sensor,
The lens barrel unit is
A lens barrel unit holder that is a housing of the lens barrel unit,
A part of the optical components constituting the bending optical system protrudes to the vibration isolation unit side from the lens barrel unit holder,
The anti-vibration unit is
An anti-vibration unit holder that is a housing of the anti-vibration unit;
A first guide shaft extending in a first direction which is one of the Y direction and the X direction perpendicular to both the Z direction and the Y direction and supported by the vibration isolation unit holder; A slider movable in a first direction;
Of the X direction and the Y direction, the second guide shaft extends in the other second direction different from the first direction and is supported by the slider, and moves in the second direction. A free imaging device holder for holding the imaging device;
A Y drive unit for moving the image sensor holder in the second direction;
A first drive unit that moves the slider in the first direction together with the image sensor holder;
The slider is disposed closer to the lens barrel unit than the image sensor holder, and has an opening for receiving a portion protruding from the lens barrel unit holder of an optical component constituting the bending optical system. age,
It is preferable that the anti-vibration unit holder has an opening on the side of the lens barrel unit so that the slider directly faces the lens barrel unit.

In addition, a photographing apparatus of the present invention that achieves the above object includes the photographing unit,
An image signal with reduced blur is generated by the operation of the image stabilization unit constituting the photographing unit.

  As described above, the image stabilization unit that enables reduction of the dimension in the Z direction, the image capturing unit including the image stabilization unit, and the image capturing apparatus including the image capturing unit are realized.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external perspective view of a digital camera 1 to which an embodiment of the present invention is applied.

  FIG. 1 is a perspective view of a digital camera 1 in which a lens barrel unit 10 incorporating a bending optical system is adopted in order to reduce the size and thickness, as viewed obliquely from above.

  Since a three-dimensional perspective view is shown in FIG. 1, coordinate axes indicating the X, Y, and Z axes are used for easy understanding of the X, Y, and Z directions used in the following description. It is shown in the figure. Note that the coordinate axes are also shown in all the drawings subsequent to FIG. 2 in order to indicate directions.

  1 to 24 described below, the X direction indicated by the coordinate axis is a first direction according to the present invention, and the X direction indicated by the coordinate axis is the second direction according to the present invention as a Y direction. An example of the case is shown. Accordingly, in the embodiment shown in FIGS. 1 to 24, an example of the first drive unit referred to in the present invention is configured by an X drive unit, and an example of the second drive unit referred to in the present invention is configured by a Y drive unit. Further, an example of the first guide shaft according to the present invention is configured by an X guide shaft, and an example of the second guide shaft according to the present invention is configured by a Y guide shaft.

  The lens barrel unit 10 in FIG. 1 causes subject light incident along the first optical axis extending in the Y direction toward the subject in a direction along the second optical axis extending in the Z direction perpendicular to the Y direction. It incorporates a bending optical system that forms an image by bending.

  As will be described in detail later, in the present embodiment, as shown in FIG. 1, it is coupled with a lens barrel unit 10 having a bending optical system, and an image signal representing the subject is received by imaging the subject light by the bending optical system. By adopting a configuration in which a vibration isolating unit 11 that includes an image sensor to be generated and moves the image sensor to suppress blur on the image signal is provided below the lens barrel unit 10, the Z of the body of the digital camera The length in the direction and the Y direction can be shortened.

  Furthermore, in consideration of the fact that the image pickup device is very expensive in the image stabilization unit of the present embodiment, the image pickup device is removed as long as the image pickup device is usable when an assembly failure occurs. It can also be reused.

  First, the structure of the lens barrel unit 10 of the lens barrel unit and the image stabilization unit will be described with reference to FIG.

  FIG. 2 is an exploded view of the lens barrel unit 10 mounted in the digital camera of FIG.

  First, each member constituting the lens barrel unit 10 will be described with reference to the lens barrel unit 10 of FIG.

  Since the lens barrel unit 10 of the present embodiment incorporates a bending optical system having a five-group lens configuration, the respective lens groups are distinguished by adding symbols L1, L2, L3, L4, and L5 to the respective groups. . Of the five-group lens configuration, the second lens group L2 and the fifth lens group L5 constitute a zoom lens, and the fourth lens group L4 constitutes a focus lens. The first lens group L1 includes three lenses LL1, LL3, and LL4 and a prism LL2, and the second lens group L2 includes three lenses LL5, LL6, and LL7. The third lens group L3, which is a fixed lens, includes one lens, and the fourth lens group, which is a focus lens, includes three lenses LL9, LL10, and LL11. Further, the fifth lens unit L5, which constitutes a zoom lens together with the second lens unit L2, comprises a single lens LL12.

  The configuration in the lens barrel unit 10 will be described with reference to FIG.

  First, the configuration of the first lens unit L1 in the 5-group lens configuration will be described.

  In the upper right side of FIG. 2, a first group frame F1 that holds a first lens group L1 including three lenses LL1, LL3, LL4 and a prism LL2 is shown. One lens LL1 exposed on the surface of the prism LL2 constituting part of the first lens group L1 is attached to the side on which subject light is incident, and the side on which the subject light is emitted from the prism LL2 is a lens. Are attached and are inserted into the first group frame F1. When the first lens group L1 is attached to the first group frame F1, the first lens group L1 is bonded and fixed to the first group frame F1, and then the mask members M1 and M2 are attached. 2 is inserted between the lens LL3 and the lens LL4.

  At the lower left of the first group frame F1 in FIG. 2, there is shown a lens barrel unit holder UH to which the first group frame F1 is connected and which accommodates the lens groups from the second lens group L2 to the fifth lens group L5. ing.

  When the first group frame F1 is connected to the lens barrel unit holder UH, it is necessary to adjust the inclination of the optical axis. Therefore, the connecting portion of the first group frame F1 with the lens barrel unit holder UH has a tension spring 101A, 101B is provided in two places, and the first group frame F1 is fastened to the lens barrel unit holder UH by the urging of the tension springs 101A and 101B. Screws B1 and B1 are screwed into nuts N1 and N1 attached to the first group frame F1. The tips of the screws B1 and B1 are in contact with the protrusions UH01 and UH01 of the lens barrel unit holder UH. By moving the screws B1 and B1 back and forth, the distance between the first group frame F1 and the lens barrel unit holder UH in this portion can be adjusted.

  Next, the second lens group L2 and the fifth lens group L5 constituting the zoom lens, the fourth lens group L4 constituting the focus lens, and the third lens group L3 which is a fixed lens are placed in the lens barrel unit holder UH. A brief description will be given of how it is incorporated.

  First, the third lens group L3, which is a fixed lens, is attached to the holder wall surface inside the lens barrel unit holder UH together with the third group frame F3 by the pressing plate A1, and is incorporated into the lens barrel unit holder UH. The third group frame F3 is provided with an operation piece OP for adjusting the position in the XY plane, and the operation piece OP is attached to the lens barrel unit holder UH in a state where it can be operated from the outside.

  Further, the second lens group L2 and the fifth lens group L5 constituting the zoom lens are movable in the lens barrel unit holder UH together with some members constituting the zoom mechanism with the third lens group L3 interposed therebetween. Incorporated. Here, the structure of the members constituting the zoom mechanism will be briefly described.

  Engagement in which the cam pin CP1 and the two guide shafts G1 and G2 are engaged with the second group frame F2 that holds the second lens group of the second lens group L2 and the fifth lens group L5 constituting the zoom lens. The parts K1 and K2 are provided, and the fifth group frame F5 that holds the fifth lens group is provided with engagement parts K3 and K4 that engage the cam pin CP2 and the two guide shafts G3 and G4.

  The cam pins CP1 and CP2 engage with the cylindrical cam C1 connected to the zoom motor ZM, and the engaging portions K1, K2, K3, and K4 are supported by the lens barrel unit holder UH along the Z axis. By engaging each of the four guide shafts G1, G2, G3, and G4 disposed, the second lens unit L2 and the fifth lens unit L5 are respectively in the lens barrel unit holder UH along the Z-axis direction. Built in freely. Note that the engaging portion between the guide shaft G1 and the engaging portion K1 of the second group frame F2, the engaging portion between the guide shaft G1 and the engaging portion K3 of the fifth group frame F5, a later-described fourth group frame F4 and a guide. Bushings BS1 to BS3 are respectively extrapolated around the shafts of the engaging portions with the shaft G4.

  On the other hand, on the side of the gear head GH of the zoom motor ZM, there is provided a zoom cam bearing BA1 that allows one end of a zoom cam shaft AX, which will be described later, to rotate freely. Connected. The zoom cam shaft AX is inserted so as to pass through the center hole of the reduction gear GE1 and the center hole of the cylindrical cam C1, and one end of the zoom cam shaft AX is connected to the zoom cam bearing BA1. A zoom mechanism in which the cylindrical cam C1 is coupled to the zoom motor ZM is disposed on the side of the lens unit having the five-group configuration and is incorporated in the lens barrel unit holder UH. The tip of the zoom cam shaft AX on the side opposite to the reduction gear GE1 side engages with the zoom cam bearing BA2 provided in the lens barrel unit holder UH, so that the zoom cam shaft AX can rotate freely. The cam pins CP1 and CP2 included in the second group frame F2 that holds the second lens group L2 and the fifth group frame F5 that holds the fifth lens group L5 move, and the mutual distance between the second lens group L2 and the fifth lens group L5 moves. The focal length is adjusted by adjusting.

  Although details will be described later, in order to reduce the length of the lens barrel unit in the Z direction as described above, the image sensor is disposed in the image stabilization unit to drive the image sensor. In order to reduce the total length in the Z direction including the vibration isolation unit and the lens barrel unit, the fifth lens group in the lens barrel unit holder UH can be used. L5 is projected from the lens barrel unit holder UH to the vibration isolating unit holder side so as to enter the receiving portion on the vibration isolating unit side.

  As described above, the second lens group L2 and the fifth lens group, which are zoom lenses, together with the zoom mechanism are incorporated into the lens barrel unit holder UH.

  Next, a focus adjustment mechanism incorporated together with the fourth lens unit L4 that is a focus lens will be described.

  A focus carriage CR that meshes with a lead screw (not shown) extending from the focus motor FM is connected to the fourth group frame F4 of the fourth lens group L4 that is a focus lens. Therefore, the lead screw rotates in accordance with the rotation of the focus motor FM, and the focus carriage CR moves on the lead screw along the second optical axis (Z direction), so that the fourth lens unit L4, which is a focus lens, is used. Will move. Further, since it is necessary to detect the position of the fourth lens unit L4 that is the focus lens in order to move the focus lens, the position of the fourth lens unit L4 that is the focus lens is detected in the lens barrel unit holder UH. The photo interrupter PI is deployed.

  Further, in the present embodiment, a mechanical shutter SH is incorporated between the fourth lens group L4 that is a focus lens and the third lens group L3 that is a fixed lens.

  Thus, after the second to fifth lens groups L2 to L5 are assembled in the lens barrel unit holder UH, the first group frame F1 and the lens barrel unit holder UH are fastened by the tension springs 101A and 101B. The position of the first group frame F1 relative to the lens barrel unit holder UH by screwing the screws B1 and B1 into the nuts N1 and N1 previously attached to the first group frame F1 with an adhesive and moving the screws B1 and B1 forward and backward. Make adjustments.

  Further, the lens barrel unit 10 is assembled by covering the front cover COV1 and the rear cover COV2. FIG. 2 also shows a main flexible board MFL for wiring disposed so as to cover the surface of the cover.

  Next, the configuration of the image stabilization unit 11 connected to the lens barrel unit 10 will be described with reference to FIG.

  FIG. 3 is an exploded view of the image stabilization unit 11 mounted in the digital camera of FIG.

  3 is coupled to the lens barrel unit 10 shown in FIG. 2, and receives an image of subject light by the bending optical system in the lens barrel unit 10 to generate an image signal representing the subject. The anti-vibration unit 11 is provided with a CCD solid-state image pickup device (hereinafter referred to as a CCD) and moves the CCD 110 to suppress blur on the image signal.

  An anti-vibration unit holder UH2 that is a housing of the anti-vibration unit 11 is shown in the upper center of FIG. 3. The image sensor holder 111 and the image sensor holder 111 are placed in the anti-vibration unit holder UH 2 in the Y direction. Y drive unit 116A that moves in the direction, slider SL that supports the image pickup element holder 111 so as to be movable in the Y direction and moves freely in the X direction, and moves the slider SL along with the image pickup element holder 111 in the X direction. The X drive unit 116B is incorporated. A slider SL for moving the image sensor holder 111 in the X direction is located above the image sensor holder 111 (Z direction) and close to the lens barrel unit holder UH (see FIG. 2) with respect to the image sensor holder 111. Are arranged so as to overlap the second optical axis, that is, the Z direction, and are arranged along the X direction.

  In the present embodiment, as described above, in order to shorten the length in the Y direction and shorten the length in the Z direction, the structure of the vibration isolation unit holder UH2 has been devised. The structure will be described.

  First, a structure for shortening the dimension in the Z direction will be described.

  As described with reference to FIG. 2, since the fifth lens unit L5 protrudes from the lens barrel unit holder UH to the image stabilization unit holder UH2 side, the image stabilization unit holder UH2 and the slider SL on the image stabilization unit side are separated from each other. , Openings for receiving the fifth lens unit L5 are provided.

  As shown in FIG. 3, the image stabilization unit holder UH <b> 2 has an opening AP <b> 1 that extends so that the slider SL directly faces the lens barrel unit 10 on the lens barrel unit 10 side. An aperture AP2 that is disposed closer to the lens barrel unit 10 side and that accepts a portion protruding from the lens barrel unit holder UH (see FIG. 2) of the optical component (in this example, the fifth lens unit L5) that constitutes the bending optical system. Have. For this reason, when the fifth lens unit L5 on the lens barrel unit side is moved to the image pickup element side at the time of zooming by arranging the lens barrel unit holder UH so as to contact the lowermost surface of the lens barrel unit UH2 and the uppermost surface of the image stabilizing unit UH2. When the fifth lens unit L5 enters the opening AP2 of the slider SL, the dimensions of the lens barrel unit 10 and the image stabilization unit 11 in the Z direction can be reduced.

  Here, the slider SL in FIG. 3 is supported by two X guide shafts G5 and G6 that extend in the X direction perpendicular to both the Y direction and the Z direction and are press-fitted and fixed to the vibration isolation unit holder UH2. The image pickup device holder 111 has two Y guide shafts G7 and G8 that extend in the Y direction and are supported by the slider SL, and move together with the Y guide shafts G7 and G8 in the Y direction. It is free. The image sensor holder 111 has an image sensor holder main body 1111 having a front contact surface to which the light receiving side front edge of the CCD 110 is applied, and is shown below the image sensor holder main body 1111 in FIG. A spring member 1112 that elastically presses the back side of the CCD is provided. Further, the image sensor holder 111 is arranged on the back side of the CCD 110 of the image sensor holder body 1111 and fixes the spring member 1112 to the image sensor holder body 1111, and the pressing portion of the spring member 1112 on the back side of the CCD 110 is fixed. It has a CCD plate 113 in which an opening to be exposed is formed. The CCD plate 113 is provided with an opening 113A for exposing the spring member 1112 to the surface.

  In addition, a sheet metal member 114 for connecting the lens barrel unit 10 and the vibration isolating unit 11 is shown in the lowermost part of FIG. In the present embodiment, as described above, in order to shorten the length in the Z direction when the lens barrel unit 10 and the vibration isolation unit 11 are coupled, the sheet metal member 114 that fits the surface of the vibration isolation unit holder UH2 is used. The lens barrel unit 10 and the vibration isolating unit 11 can be coupled together. When this sheet metal member 114 is used, it is not necessary to use a fastening member such as a screw, and the dimension in the Z direction can be further shortened.

  Next, what kind of device is devised in the image stabilization unit 11 in order to shorten the Y direction described above will be described.

  In the present embodiment, the Y drive unit 116A that moves the image sensor holder 111 in the Y direction is arranged in the X direction of the image sensor holder 111, and the slider SL above the image sensor is moved in the X direction together with the image sensor holder 111. The X driving unit 116B to be moved is arranged at a position aligned with the X direction of the Y driving unit 116A, so that the dimension in the Y direction can be shortened.

  The X drive unit 116B is formed with a first magnet MAG1 and a first coil that receives power supply and generates a force for driving the slider SL in the X direction by interaction with the first magnet MAG1. The Y drive unit 116A has a first coil substrate CL1 and the Y drive unit 116A receives the supply of power from the second magnet MAG2 and drives the image sensor holder 111 in the Y direction by interaction with the second magnet MAG2. And a second coil substrate CL2 on which a second coil that generates a force is generated. Moreover, both the drive parts are provided with two yokes Y11, Y12, Y21, and Y22 in order to reduce leakage magnetic flux.

  In the present embodiment, in order to prevent electromagnetic interference between the first coil substrate CL1 and the second coil substrate CL2, one of the first coil substrate CL1 and the second coil substrate CL2 is used. The coil substrate CL1 is a substrate facing the Y direction, and the other coil substrate CL2 is disposed so as to be a substrate facing the Z direction.

  Thus, when the X driving unit 116B and the Y driving unit 116A are arranged side by side in the X direction, it is not necessary to arrange the X driving unit 116B in the Y direction of the image sensor holder 111. It is possible to reduce the dimensions.

  Next, what kind of device is devised to enable the reuse of the CCD 110 will be described.

  As described above, in consideration of the fact that the CCD 110 as the image sensor is very expensive in this embodiment, the CCD 110 is removed as long as the CCD 110 is usable when an assembly failure occurs. Can be reused.

  The CCD 110 is mounted on a substrate (a flexible substrate in this example) FL1, and an adhesive sheet 112 is bonded to a portion of the substrate FL1 that overlaps the CCD 110 with the substrate FL1 interposed therebetween. In other words, the spring member 1112 shown in the lower part of FIG. 3 presses the CCD 110 through the adhesive sheet 112 and the substrate FL1, thereby pressing the CCD 110 against the front contact surface 1111D of the image sensor holder body 1111. The spring member 1112 is configured to be fixed to the adhesive sheet 112 with an adhesive. The spring member 1112 is fixed to the image sensor holder 1111 by the CCD plate 113, and the CCD plate 113 is a portion that presses the back side of the CCD 110 by the spring member 1112 provided on the back side of the image sensor holder 111. An opening 113A is formed in the opening. Therefore, when an adhesive is poured into the opening 113A, the spring member 1112 is bonded and fixed to the adhesive sheet 112 on the back surface side of the substrate FL1, whereby the CCD 110 is fixed to the image sensor holder 111.

  In this way, when the spring member 1112 is bonded and fixed to the adhesive sheet 112 with an adhesive, the CCD 110 is mounted in the image sensor holder 111. When there is an assembly failure, the adhesive sheet 112 is removed. Thus, the CCD 110 can be removed intact together with the substrate FL1, so that the removed CCD 110 can be reused in the assembly of another product.

  Further, although details will be described later, in the present embodiment, in order to suppress rattling during movement of the image sensor holder 111, the spring member 115 (the first member in FIG. 3) provided with the image sensor holder 111 is provided in the image stabilization unit holder UH2. The guide shafts G7 and G8 provided on the image sensor holder 111 can be shifted to the lower side of the engagement holes provided on the slider SL by pressing downward in the Z direction. . In this example, the tip 115A of the T-shaped spring member 115 shown at the top of FIG. 3 presses the spherical body BA1 provided in the image sensor holder main body 1111 to thereby prevent the image sensor holder 111 from rattling during movement. It is configured to suppress.

  Note that an LPF (Low Pass Filter) 117 is mounted on the front surface of the CCD 110, and FIG. 3 shows a number of components constituting the LPF 117.

  When the lens barrel unit 10 and the vibration isolation unit 11 described above are coupled by the sheet metal member 114, the length in the Z direction and the length in the Y direction are shortened as shown in FIGS. The photographing unit referred to in the present invention is assembled.

  FIG. 4 is a view showing the photographing unit 1A in which the lens barrel unit holder UH and the vibration proof unit holder UH2 are coupled by the sheet metal member 114. FIG. 5 shows the photographing unit 1A in FIG. 4 parallel to the X direction. It is sectional drawing which looked at the surface cut | disconnected and cut | disconnected along the Z direction with the cutting line from the front. 6 is a member showing the relationship between the second lens group L2, the fifth lens group L5, and the zoom motor ZM among the members shown in FIG. 5 with the cover of the photographing unit 1A shown in FIG. It is the figure which extracted the member which shows the relationship between the group L4 and the focus motor FM.

  The configuration of the photographing unit 1A will be described with reference to FIG. 4, FIG. 5, and FIG.

  The lens barrel unit 10 in which each member shown in FIG. 2 is incorporated in the lens barrel unit holder UH is coupled to the vibration isolation unit 11 in which each member shown in FIG. 3 is incorporated in the vibration isolation unit holder UH2 by the sheet metal member 114. Then, the photographing unit 1A shown in FIGS. 4 and 5 is obtained.

  The configuration of the photographing unit 1A will be briefly described with reference to FIGS.

  In the lens barrel unit provided in the photographing unit 1A shown in FIG. 4, the first group frame F1 in which the first lens group L1 is incorporated is connected to the lens barrel unit 10 on the side opposite to the image stabilization unit 11 side. The zoom motor ZM is incorporated next to the first group frame F1 and is connected to the image stabilization unit 11. The lens barrel unit holder UH shown in FIG. 2 extends to the lower right side of the image stabilization unit 11, and a focus motor FM is incorporated in that portion.

  Further, as shown in FIG. 5, a second lens group L2 constituting a zoom lens is incorporated in a lens barrel unit holder UH that is a housing of the lens barrel unit, and is provided below the second lens group L2. The third lens unit L3, which is a fixed lens, is incorporated with a gap. In the third group frame F3, the operation piece OP is provided as described above, and the operation piece OP (see FIG. 4) is operated from the outside, so that the screw B1 for connecting the first group frame is connected to the third group frame F3. In addition, the optical axis of the optical component on the second optical axis side is adjusted.

  Further, as shown in FIG. 5, a fourth lens group L4, which is a focus lens, is incorporated in the lens barrel unit holder UH, and a zoom lens is configured with the second lens group L2 below the fourth lens group L4. A fifth lens unit L5 is incorporated. A mechanical shutter SH is incorporated between the third lens group L3, which is a fixed lens, and the fourth lens group L4, which is a focus lens.

  On the other hand, on the side of the bending optical system in the lens barrel unit holder UH, the zoom mechanism described above is incorporated, and cam pins provided in the second group frame F2 and the fifth group frame F5 on the cylindrical cam C1 in the zoom mechanism. CP1 and CP2 (see FIG. 2) are configured to engage with each other. That is, the cylindrical cam C1 rotates in accordance with the rotation of the zoom motor ZM and the cam pins CP1 and CP2 move in the Z direction, so that the distance between the second lens unit L2 and the fifth lens unit L5 is adjusted and the focal length is increased. Adjusted.

  Further, the fourth group frame F4 connected to the focus motor FM shown in the lower right diagonal portion of FIG. 5 via the focus carriage CR is also configured to move along the second optical axis (Z direction). Has been.

  Further, the fifth lens unit L5 protruding from the lens barrel unit holder UH at the time of zooming is disposed so as to be accommodated in the aperture AP2 of the slider SL through the aperture AP1 of the image stabilization unit holder UH2. An X drive unit 116B (only the yoke Y11 is shown in FIG. 5) is provided at the end of the slider SL in the X direction, and the slider SL and the image pickup device holder 111 are used together by the X drive unit 116B. Driven in the direction. On the other hand, two Y guide shafts G7 and G8 are press-fitted and fixed to the image sensor holder 111, and a slider SL that moves in the X direction supports the two Y guide shafts G7 and G8 so as to be movable in the Y direction. Thus, the image sensor holder 111 is driven in the Y direction by the Y driving unit 116A. Since the flexible substrate FL1 drawn out from the CCD 110 is wired so that a bend having a slit is formed in a slight empty space in the vibration isolating unit, the image pickup device holder 111 is moved together with the slider SL in the X direction by the bend. The image sensor holder 111 is allowed to move in the Y direction by a bent slit (not shown).

  Here, the relationship between the second lens unit L2, the fifth lens unit L5, and the zoom motor ZM, and the relationship between the fourth lens unit L4 and the focus motor FM will be described in a more easily understandable manner with reference to FIG.

  As shown in FIG. 6, the cam pins CP1 provided in the second group frame F2 holding the second lens group L2 and the cam pins CP2 provided in the fifth group frame F5 holding the fifth lens group L5 are respectively cylindrical. The cam C1 is engaged. The cam groove provided in the cylindrical cam C1 has a different pitch between a portion where the cam pin CP1 on the second lens group side engages and a portion where the cam pin CP2 on the fifth lens group side engages. As a result, the second lens unit L2 and the fifth lens unit L5 move along these pitches to adjust the mutual distance and adjust the focal length. Two guide shafts G1 and G2 are provided extending along the Z direction (second optical axis) so that the movements of both lens groups L2 and L5 at this time are smooth. The second group frame F2 and the fifth group frame F5 are configured to move in a stable posture by engaging the engaging portions K1 to K4 of the second group frame and the fifth group frame, respectively.

  The fourth group frame F4 that holds the fourth lens group L4 that is a focus lens is configured to move in the Z direction with the carriage CR engaged with the lead screw LS. At this time, the four group frames are respectively guided by the two guide shafts G3 and G4 so as to be able to move in a stable posture. In this way, a movable lens group such as a zoom lens and a focus lens is housed in the lens barrel unit holder UH so as to be movable and compact.

  Here, as described above, in the present embodiment, in order to shorten the lengths of the lens barrel unit 10 and the image stabilization unit 11 in FIG. The lens unit L5 protrudes from the lens barrel unit 10 and the apertures AP1 and AP2 for receiving the fifth lens unit L5 are provided on the image stabilization unit 11 side, so that the lens unit 10 and the image stabilization unit 11 can be easily combined. Since they can be combined, the configuration is extracted and described.

  FIG. 7 is a view for explaining the configuration of the connecting portion between the lens barrel unit holder and the image stabilizing unit.

  FIG. 7 shows a cross-sectional view of the anti-vibration unit 11 cut along the Z direction along a parallel line in the X direction and viewing the cut surface.

  In this embodiment, as shown in FIG. 7, the slider SL is provided in the image stabilization unit 11, and in the Y direction, the Y drive unit moves the image sensor holder 111 directly in the Y direction, and the X direction Adopts a configuration in which the image pickup device holder 111 is moved in the X direction together with the slider SL by moving the slider SL in the X direction. With this configuration, the image sensor holder 111 and the slider SL can be arranged side by side along the Z direction, that is, the second optical axis (Z direction) of the optical component protruding from the lens barrel unit 10.

  Therefore, an opening AP2 is provided in the slider SL provided in the image stabilization unit 11, and the slider AP2 is disposed closer to the lens barrel unit 10 than the image sensor holder 111, and the lens barrel unit holder 10 (see FIG. 5). When the optical component moves to the image sensor side during zooming, the optical component (fifth lens group L5) is positioned on the optical axis of the image sensor 110 by receiving the portion protruding from the slider SL. To be able to.

  Next, how the image sensor holder 111 is supported by the image stabilization unit holder UH2 so as to suppress the shaking of the image sensor holder 111 in the image stabilization unit 11 during movement, and the X drive unit. A description will be given of how 116B and the Y drive unit 116A are assembled in the X direction in the image stabilization unit holder UH2.

  First, the internal configuration of the image stabilization unit 11 will be described with reference to FIGS. 8 to 10 and how the X drive unit 116B and the Y drive unit 116A operate in the X in the image stabilization unit holder UH2. A description will be given of how the image sensors are assembled in a direction, and then how the rattling during movement of the image sensor is suppressed will be described.

  FIG. 8 is a perspective view of the state after the anti-vibration unit 11 is assembled as viewed obliquely from above. FIG. 9 is an anti-vibration unit holder UH2 that is a housing of the anti-vibration unit 11 and its anti-vibration unit holder. It is the figure which removed the spring member 115 with which UH2 is provided, and looked at the inside. FIG. 10 is a cross-sectional view of the anti-vibration unit 11 of FIG. 8 cut along the Z direction along a line parallel to the X direction and viewed from the front.

  First, how the X drive unit and the Y drive unit are assembled side by side will be described with reference to FIGS.

  The upper side of FIGS. 8 to 10 is the lens barrel unit side.

  As described so far, in the present embodiment, the X drive unit 116B and the Y drive unit 116A are arranged side by side in the X direction, and the Y drive unit 116A moves the image sensor holder body 1111 in the Y direction, and the X drive. A configuration is adopted in which the CCD 110 is indirectly moved in the X direction by driving the slider SL arranged above the imaging element holder main body 1111 in the X direction in the section 116B.

  As it is, the X drive unit and the Y drive unit are provided at positions aligned in the Y direction and the X direction of the image sensor holder 111, respectively, so the X drive unit must be arranged in the Y direction of the CCD. However, when the above configuration is adopted, as shown in FIGS. 8 to 10, a slider SL is disposed so as to extend in the X direction above the image sensor holder 111 that holds the CCD, and below the slider SL. First, it is possible to dispose a Y drive unit that drives the image sensor holder 111, and to dispose the X drive unit 116B at a position aligned with the X direction of the Y drive unit 116A.

  Next, how the image sensor holder 111 in the image stabilization unit 11 is supported without rattling will be described.

  In the present embodiment, as described above, the image pickup device holder main body 1111 and the slider SL are arranged side by side in the Z direction, the spring member 115 shown in FIG. 8 is provided in the vibration isolation unit holder UH2, and the spring member 115 is below the slider. The structure which suppresses the rattling during the movement of the image pick-up element holder 111 is proposed by pressing down spherical body BA1 (refer FIG. 9) with which the image pick-up element holder main body 1111 in FIG.

  That is, as shown in FIG. 10, the ball member BA1 provided in the image sensor holder 111 is pressed downward in the Z direction by the spring member 115 supported by the image stabilization unit holder UH2, and the image sensor holder is moving while moving. The sticking can be suppressed by the spring member 115. At this time, the entire image pickup device holder 111 is efficiently moved downward in the unit holder UH2 in a range surrounded by the two Y guide shafts G7 and G8 and the two X guide shafts G5 and G6 for guiding the slider SL. The spherical body BA1 disposed where it can be pushed down is pressed by the spring member 115, and the Y guide shafts G7 and G8 of the image sensor holder main body 1111 are shown in FIG. By moving the image to the lower side of the guide fork H <b> 2, rattling during movement of the image sensor holder body 1111 can be elastically suppressed by the spring member 115.

  Therefore, rattling when the image sensor holder 111 is moving with respect to the slider SL is suppressed, and rattling when the slider SL is moving with respect to the image stabilization unit holder UH2 is also the same. It can be suppressed.

  Further, when the slider SL is urged downward via the Y guide shafts G7 and G8 by urging the image sensor holder 111 downward by the spring member 115, the slider through which the X guide shafts G5 and G6 are inserted. The engagement hole of SL can be made to be in a state of being shifted above the X guide shafts G5 and G6 fixed to the vibration proof unit holder UH2.

  For this reason, rattling when the image sensor holder 111 moves in the X direction and the Y direction is prevented.

  Furthermore, in the present embodiment, the spring member 115 is configured to press the sphere BA1 included in the imaging element holder 111 with the spring member 115, whereby the spring when the imaging element holder 111 moves in the X direction and the Y direction. The sliding resistance between the member 115 and the sphere BA1 is also reduced. In this embodiment, the direction in which the spherical member BA1 is pressed by the spring member 115 is the direction along which the digital camera or the like is normally held when the image stabilization unit 11 shown in FIGS. It is.

By the way, in this embodiment, since the voice coil motor is used as the drive source for each of the X drive unit 116B and the Y drive unit 116A, electromagnetic interference is required when arranging the X drive unit 116B and the Y drive unit 116A side by side. The X drive unit 116B and the Y drive unit 116A are also devised so as not to occur. ,
FIGS. 11-15 is a figure which shows the difference in direction of each member containing the coil board | substrate arrange | positioned in the internal structure of both X drive part 116B and Y drive part 116A, and both.

  FIG. 11 is a side view of FIG. 9, FIG. 12 is a view of the inside with the X drive unit of FIG. 9 removed, and FIG. 13 is a view of the image stabilization unit of FIG. 11 from the left side of FIG. FIG. 14 is a front view of a section obtained by cutting the Y drive unit 116 of FIG. 11 along the Z direction along a line parallel to the Y direction. FIG. 15 is a diagram of FIG. 11 viewed from above.

  As shown in FIG. 11, the slider SL extends in the X direction above the image sensor holder main body 1111 and the Y drive unit 116A along the guide shafts G5 and G6 supported by the image stabilization unit holder UH2 (see FIG. 8). The front end of the X drive unit 116B extends. FIG. 11 shows only the yoke Y11 of the X drive unit 116B.

  Also, as shown in FIGS. 11 and 12, the Y drive unit 116A on the image sensor holder main body side, which is aligned in the X direction of the X drive unit 116B, is connected to the image sensor holder main body 1111 via the coil substrate CL2. It is connected. The imaging element holder main body 1111 is supported by Y guide shafts G7 and G8 supported by the slider SL so as to be movable in the Y direction. In order to clarify the relationship between the image sensor holder and the Y drive unit, FIG. 12 shows the positional relationship between the image sensor holder main body 1111, the spring member 1112, and the CCD plate 113 provided in the image sensor holder.

  The Y driving section 116A receives a current supplied from the second magnet MAG2 and the second magnet MAG2 to generate a force for driving the image sensor holder 111 in the Y direction according to the interaction with the second magnet MAG2. And a second coil substrate CL2 on which the coil is formed. The second coil substrate CL2 is also provided with a hall element DET2 (not shown) so that the position can be detected.

  As shown in FIGS. 13 and 14, the X drive unit 116 </ b> B is supplied with a current from the first magnet MAG <b> 1 according to the present invention and receives the imaging element holder 111 by the interaction with the first magnet MAG <b> 1. And a first coil substrate CL1 on which a first coil that generates a driving force in the X direction is formed. The first coil substrate CL1 is connected to the slider SL. Note that a hall element DET1 (not shown) is also provided in the first coil substrate CL1 so that the position can be detected. 11-14, when a current is passed through the second coil, the second coil substrate CL2 moves in the Y direction according to Fleming's left-hand rule, and the image sensor holder 111 moves in the Y direction. When the electric current flows through the first coil, the first coil substrate CL1 moves in the X direction according to Fleming's left-hand rule, and the image pickup device holder 111 moves in the X direction together with the slider SL.

  Since the coil substrates CL1 and CL2 and the magnets MAG1 and MAG2 are coupled by magnetic force in this way, in the present embodiment, as shown in FIGS. 14 and 15, the first coil substrate CL1 and One coil substrate CL2 of the second coil substrate CL2 is a substrate facing the Z direction, and the other coil substrate CL1 is a substrate facing the Y direction. If it does in this way, it will become difficult for the 1st coil board | substrate CL1 and the 2nd coil board | substrate CL2 to receive electromagnetic interference mutually.

  Next, the structure of the sheet metal member 114 for connecting the lens barrel unit holder UH and the image stabilization unit holder UH2 will be described.

  As described above, in the present embodiment, the vibration-proof unit 11 spreads over the second surface opposite to the first surface coupled to the lens barrel unit 10 and is locked to the lens barrel unit holder UH. Is provided with a sheet metal member 114 that couples the lens barrel unit 10 and the image stabilization unit 11, and the length in the Z direction of the photographing unit 1A when the lens barrel unit holder UH and the image stabilization unit holder UH2 are coupled is further shortened. To be able to.

  FIG. 16 is a view for explaining the structure of the sheet metal member 114. FIG. 17 shows the photographing unit 1A obliquely upward after the vibration isolation unit holder UH2 and the lens barrel unit holder UH are coupled using the sheet metal member 114. It is the perspective view seen from. 18 is a view of the photographing unit of FIG. 17 as viewed from the front, and FIG. 19 is a view of the photographing unit of FIG. 17 as viewed from the back.

  As shown in FIG. 17, the sheet metal member 114 shown in FIG. 16 has a second surface opposite to the first surface (the surface of the symbol J shown in FIG. 17) coupled to the lens barrel unit 10. The lens barrel unit 10 and the vibration isolating unit 11 are coupled by spreading and being locked by the lens barrel unit holder UH. At this time, the sheet metal member 114 is locked to the lens barrel unit 10 at three points.

  In the present embodiment, three locking portions 1141, 1142 and 1143 are provided at both ends in the X direction of the sheet metal member 114, respectively, and the locking portions 1141, 1142 and 1143 have elasticity respectively. The sheet metal member 114 is disposed so as to cover the second surface opposite to the first surface coupled to the lens barrel unit 10 so that a height higher than the thickness of the sheet metal member 114 is not generated in the Z direction. ing.

  As shown in FIG. 16, the left end locking portion 1141 in FIG. 16 is provided with a bent portion 1141h facing slightly downward in FIG. 16, and the bent portion 1141h is provided on the lens barrel unit holder UH. The projecting portion P1 (see FIG. 17) is locked, and the two locking portions 1142 and 1143 at the right end are provided with two raised portions that protrude toward the right side of FIG. 16 and rise in the Z direction while protruding. In addition, locking holes 1142h and 1143h that are locked to the protrusions P2 and P3 of the lens barrel unit holder UH are provided at the upper portion thereof.

  FIGS. 17 to 19 show the state of the image stabilization unit 11 and the lens barrel unit 10 after the sheet metal members 114 are connected to each other. FIG. 17 shows a perspective view seen obliquely from above, FIG. 18 shows a front view of FIG. 17, and FIG. 19 shows a rear view of FIG.

  As shown in FIG. 17 to FIG. 19, the bent portion 1141h of the locking portion is engaged with the projection P1 on the lens barrel unit side, and the holes 1142h and 1143h of the locking portion are fitted into the projections P2 to P3, respectively. Is locked.

  As can be seen from FIGS. 17 to 19, a sheet metal member covering the second surface of the vibration isolating unit 11 on the side opposite to the first surface coupled to the lens barrel unit 10 when locked at three points. The surface of 114 fits snugly with the second surface, so that the lens barrel unit 10 and the vibration isolation unit 11 can be coupled without a gap without causing an extra dimension in the Z direction.

  Further, in this case, it is not necessary to use a screw when the vibration isolator unit 10 and the lens barrel unit 11 are coupled, and the length in the Z direction can be further shortened.

  As described above, the optical axis is adjusted by the tightening condition of the screw B1 when the first group lens frame F1 described in FIG. 2 is attached to the lens barrel unit holder UH and the operation piece OP provided in the third group lens frame F3. After the adjusted barrel unit 10 is coupled to the image stabilization unit 11 by the sheet metal member 114, the position of the image stabilization unit 11 is adjusted, and then the three locking portions 1141 to 1143 and P1 to P3 are bonded. The assembly is completed by bonding and fixing each with an agent.

  Finally, in the present embodiment, since the cost is reduced by devising the structure around the image sensor holder 111, the structure for reducing the cost will also be described.

  20-24 is a figure explaining the improvement point.

  Although it is conceivable to employ a structure in which a spring member is provided on the image sensor holder main body 1111 and biased toward the side where the side contact surfaces 1111A to 1111C in FIG. The problem of becoming. Although it is possible to integrally form a spring member on the image sensor holder body 1111, the image sensor holder body 1111 becomes large in this case. In view of this, in this embodiment, the spring member is eliminated, and as shown in FIG. 21, the CCD 110 is pressed against the side abutting surfaces 1111A to 1111C with an assembly jig, thereby reducing the cost of the product, and the image sensor holder main body. The size of 1111 has been successfully reduced.

  In addition, considering that the CCD 110 as the image sensor is very expensive as described above, when an assembly failure occurs in the assembly process after the process of incorporating the CCD 110 into the image sensor holder 111, the CCD 110 is removed and re-inserted. It also makes it possible to use it.

  With reference to FIGS. 20 to 24, how the spring member for attachment is abolished and how the CCD can be reused will be described.

  FIG. 20 is a cross-sectional view seen from the back side showing a state after the CCD 110 is mounted on the image sensor holder 111. 21 is a cross-sectional view seen from above for explaining the state when the CCD 110 is mounted on the image sensor holder 111, and FIG. 22 is a view when the image sensor holder 111 mounted with the CCD 110 is viewed obliquely from above. FIG. FIG. 23 is a diagram showing the configuration of the CCD 110 and the substrate FL1 on which the CCD 110 is mounted. FIG. 24 shows a state in which the CCD 110 is attached to the image sensor holder 111 as shown in FIG. It is a figure explaining what is performed.

  As shown in FIG. 20, the image sensor holder main body 1111 has a front contact surface 1111D (see FIG. 3) to which the light receiving side front edge of the CCD 110 is applied, and a first 110 of the CCD 110 as shown in FIG. Side contact surfaces 1111A to 1111C to which two side surfaces adjacent to the diagonal of the corner are applied are provided, and the image sensor holder main body 1111 has a first corner as shown in FIGS. A portion E that exposes the second corner that is opposite to the portion is provided.

  Although it is conceivable that the image sensor holder is made larger and some spring members are inserted and applied to the side contact surface, in this embodiment, the spring members are abolished and assembled to the exposed portion E. A jig 110 is inserted into the image sensor holder 111 so that the CCD 110 can be attached to the image sensor holder 111 while being pressed against the side surface of the image sensor holder 111.

  Further, as shown in FIG. 23, considering that the CCD 110 previously mounted on the substrate FL1 is used, an adhesive sheet 112 is bonded to a portion of the substrate FL1 that overlaps the CCD 110 with the substrate FL1 interposed therebetween. .

  Here, with reference to FIG.3 and FIG.20, the method to fix an image pick-up element to an image pick-up element holder is demonstrated.

  First, the CCD 110 is incorporated into the image sensor holder body 1111. Next, in order to hold the CCD 110, the spring member 1112 and the CCD plate 113 are sequentially incorporated into the image sensor holder main body 1111. At this time, a hole 11121h formed in the spring member 1112 and a hole 1131h formed in the CCD plate 113 are fitted into a boss (not shown) formed on the lower surface of the image sensor holder main body 1111 and the image sensor holder main body. A screw B2 is screwed into a screw hole (not shown) formed on the lower surface of 1111 through a hole 11122h formed in the spring member 1112 and a hole 1132h formed in the CCD plate 113.

  In this way, by using the spring member 1112, the CCD 110 is pressed through the adhesive sheet and the substrate FL 1 and applied to the front contact surface 1111 D of the image sensor holder body 1111, whereby the CCD 110 is attached to the image sensor holder body 1111. Installing. In this state, the position of the CCD 110 in the direction orthogonal to the imaging surface is restricted, but the CCD 110 can move while being urged by the spring member in the direction parallel to the imaging surface.

  Next, as described above, an assembly jig is inserted from the notch exposed portion E in which the imaging element holder main body 1111 is formed, and the CCD 110 is held in a state of being applied to the side contact surfaces 111A to 111C. In this state, as shown in FIG. 24, the adhesive sheet 112 and the spring member 1112 are fixed with an adhesive. In this way, the CCD 110 is positioned with respect to the image sensor holder body 1111.

  Next, the substrate FL1 is fixed to the CCD plate 113 in a bent state as shown in FIG. A hole FL11h and a hole FL12h are formed in the flexible substrate FL1. A screw B3 is screwed into a screw hole 1133h formed in the CCD plate 113 so as to pass through the hole FL11h and the spacer SP. The screw B4 is screwed into the screw hole 1134h formed in the CCD plate 113 so as to be inserted through the hole FL12h. The spacer SP is mounted to maintain the U-shape of FIG. 23 of the substrate FL1. Since the CCD plate 113 is bent and formed on the screw hole 1134h side so as to have a step on the lower side, no spacer is used for the screw hole 1134h.

  Further, as described above, the flexible substrate FL1 is provided with the flexure Q and the slit SL in order to reduce the stress applied when moving the image sensor holder.

  In this way, the spring member for applying to the side contact surfaces 1111A to 1111C in the image sensor holder 111 can be eliminated, and the spring member for pressing the CCD 110 against the front contact surface 1111D of the image sensor holder 111. By adhering 1112 to the adhesive sheet 112 with an adhesive, the CCD 110 can be adhered and fixed in the image sensor holder 111, so that the cost can be reduced by eliminating the spring member.

  In addition, since it is not necessary to provide a space for inserting the spring member in the image sensor holder, the image sensor holder 111 can be made smaller than before, and the shape of the image sensor holder can be fitted to the outer shape of the CCD. The ripple effect of being able to do it is also obtained. Further, when an assembly failure occurs in the process after the image sensor is fixed to the image sensor holder, the CCD can be removed intact by removing the adhesive sheet, and the removed CCD can be reused for assembling another product. be able to.

  1 to 24, as described above, the first direction according to the present invention is defined as the X direction, and the second direction according to the present invention is defined as the Y direction. Is an X drive unit, and an example of the second drive unit referred to in the present invention is a Y drive unit. However, the first direction in the present invention is defined as the Y direction, and the second direction in the present invention is described. As an X direction, an example of the first drive unit referred to in the present invention may be configured as a Y drive unit, and an example of the second drive unit referred to in the present invention may be configured as an X drive unit.

  FIG. 25 is a diagram illustrating another configuration of the image stabilization unit.

  FIG. 25A shows the appearance of the vibration isolation unit, and FIG. 25B shows the configuration of the slider SLP in the vibration isolation unit holder UH2P. FIG. FIG. 3 shows a side view of the slider SLP.

  The slider SLP shown in FIGS. 25 (a) to 25 (c) is supported in a vibration-proof unit holder UH2P provided in the vibration-proof unit 11P so as to be movable in the Y direction, and drives the slider SLP in the Y direction. The Y drive unit 116C is disposed at the left end of the image stabilization unit 11P shown in FIGS. 25 (b) and 25 (c). The Y drive unit 116C is configured by a voice coil motor including a magnet MAG3, a yoke Y31, a coil CL3, and a yoke Y32. In addition, an X drive unit 116D that drives the image sensor holder 111P supported by the slider SLP so as to be movable in the X direction is disposed between the Y drive unit 116C and the image sensor holder 111P. The X drive unit 116D is composed of a voice coil motor including a magnet MAG4, a yoke Y41, a coil CL4, and a yoke Y42.

  In this way, at the position aligned in the X direction within the image stabilization unit holder UH2P, the Y drive unit 116C constituting an example of the first drive unit according to the present invention and the example of the second drive unit according to the present invention are configured. Even if the X drive unit 116D is arranged as shown in FIGS. 25B and 25C, the size of the image stabilizing unit holder UH2P in the Y direction can be shortened.

  As described above, the image stabilization unit that enables reduction of the dimension in the Z direction, the image capturing unit including the image stabilization unit, and the image capturing apparatus including the image capturing unit are realized.

1 is an external perspective view of a digital camera 1 to which an embodiment of the present invention is applied. FIG. 2 is an exploded view of a lens barrel unit 10 mounted inside the digital camera 1 of FIG. 1. FIG. 2 is an exploded view of a vibration isolation unit 11 mounted inside the digital camera of FIG. 1. It is a figure which shows the imaging | photography unit 1A said to this invention with which the lens-barrel unit holder UH and the anti-vibration unit holder UH2 were connected by the sheet-metal member 114. FIG. FIG. 5 is a cross-sectional view of the photographing unit 1 </ b> A of FIG. 4 as viewed from the front, cut along the Z direction along a cutting line parallel to the X direction. FIG. 6 is a diagram in which a portion showing the relationship between the second lens unit L2, the fifth lens unit L5, and the zoom motor ZM and a portion showing the relationship between the fourth lens unit L4 and the focus motor FM are extracted from the photographing unit 1A shown in FIG. . It is a figure explaining the structure of the connection part of a lens barrel unit holder and a vibration proof unit. It is the perspective view which looked at the state after the vibration isolator unit 11 was assembled from diagonally upward. It is the figure which removed the spring member 115 with which the anti-vibration unit holder UH2 which is a housing | casing of the anti-vibration unit 11, and the anti-vibration unit holder UH2 were removed, and looked at the inside. It is sectional drawing which looked at the surface which cut | disconnected and cut | disconnected the anti-vibration unit 11 of FIG. 8 along the Z direction with the line parallel to a X direction. It is a figure which shows arrangement | positioning of X drive part 116A and Y drive part 116B. It is a figure which shows the structure of a Y drive part. It is a figure explaining the difference in direction of the coil board | substrate of an X drive part and a Y drive part. It is a figure explaining the difference in direction of the coil board | substrate of an X drive part and a Y drive part. It is a figure explaining the difference in direction of the coil board | substrate of an X drive part and a Y drive part. It is a figure explaining the structure of the sheet-metal member 114. FIG. It is the perspective view which looked at the imaging | photography unit 1A after combining the anti-vibration unit holder UH2 and the lens barrel unit holder UH using the sheet-metal member 114 from diagonally upward. It is the figure which looked at the imaging unit of Drawing 17 from the front. It is the figure which looked at the imaging unit of Drawing 17 from the back. It is a figure which shows the state after CCD was mounted in the image pick-up element holder. It is a figure explaining the state when mounting CCD in an image sensor holder. It is the figure which looked at the image sensor holder with which CCD was mounted from diagonally upward. It is a figure which shows the structure of the board | substrate with which CCD and CCD are mounted. It is a figure explaining the state of adhesion | attachment performed from the back surface side of CCD after mounting CCD to an image pick-up element holder like FIG. It is a figure explaining another structure of an anti-vibration unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Digital camera 1A Image pickup unit 10 Lens barrel unit UH Lens barrel unit holder F1 First group frame F2 Second group frame F3 Third group frame F4 Fourth group frame F5 Five group frame L1 First lens group L2 Second lens group L3 Third lens group L4 Fourth lens group L5 Fifth lens group ZM Zoom motor FM Focus motor 11 Anti-vibration unit UH2 Anti-vibration unit holder 111 Imaging element holder 1111 Imaging element holder main body 1112 Spring member 112 Adhesive sheet 113 CCD plate 114 Sheet metal member 115 Spring member 116A Y drive unit 116B X drive unit 117 LPF
FL1 FL2 FL3 Flexible substrate

Claims (5)

A bending optical system that forms an image by bending a subject light incident along a first optical axis extending in the Y direction toward the subject in a direction along a second optical axis extending in the Z direction perpendicular to the Y direction. An image sensor that generates an image signal representing the subject in response to the imaging of the subject light by the bending optical system, and moves the image sensor to move the blur on the image signal. An anti-vibration unit that suppresses
The lens barrel unit includes a lens barrel unit holder that is a housing of the lens barrel unit,
A part of the optical components constituting the bending optical system protrudes to the vibration isolation unit side from the lens barrel unit holder,
The vibration isolation unit is
An anti-vibration unit holder that is a housing of the anti-vibration unit;
A first guide shaft extending in a first direction which is one of the Y direction and the X direction perpendicular to both the Z direction and the Y direction and supported by the vibration isolation unit holder; A slider movable in a first direction;
The second guide shaft is supported by the slider and extends in the other second direction different from the first direction of the X direction and the Y direction, and moves in the second direction. A free image sensor holder for holding the image sensor;
A second drive unit for moving the image sensor holder in the second direction;
A first drive unit that moves the slider in the first direction together with the image sensor holder;
The slider is disposed closer to the lens barrel unit than the imaging element holder, and has an opening for receiving a portion of the optical component constituting the bending optical system that protrudes from the lens barrel unit holder toward the vibration isolation unit. Anti-vibration unit characterized by being.   The anti-vibration unit according to claim 1, wherein the anti-vibration unit holder has an opening on the side of the lens barrel unit so that the slider directly faces the lens barrel unit. A bending optical system that forms an image by bending a subject light incident along a first optical axis extending in the Y direction toward the subject in a direction along a second optical axis extending in the Z direction perpendicular to the Y direction. A lens barrel unit, and an imaging device that generates an image signal representing the subject in response to imaging of the subject light by the bending optical system, and moving the imaging device to suppress blur on the image signal A shooting unit equipped with an anti-vibration unit,
The lens barrel unit includes a lens barrel unit holder that is a housing of the lens barrel unit,
A part of the optical components constituting the bending optical system protrudes to the vibration isolation unit side from the lens barrel unit holder,
The anti-vibration unit is an anti-vibration unit holder that is a housing of the anti-vibration unit;
A first guide shaft extending in a first direction which is one of the Y direction and the X direction perpendicular to both the Z direction and the Y direction and supported by the vibration isolation unit holder; A slider movable in a first direction;
Of the X direction and the Y direction, the second guide shaft extends in a second direction different from the first direction and is supported by the slider, and is movable in the second direction. An image sensor holder for holding the image sensor;
A second drive unit for moving the image sensor holder in the second direction;
A first drive unit that moves the slider in the first direction together with the image sensor holder;
The slider is disposed closer to the lens barrel unit than the imaging element holder, and has an opening for receiving a portion of the optical component constituting the bending optical system that protrudes from the lens barrel unit holder toward the vibration isolation unit. A photography unit characterized by being a thing.   4. The photographing unit according to claim 3, wherein the vibration proof unit holder has an opening on the lens barrel unit side so that the slider directly faces the lens barrel unit.   5. An imaging apparatus comprising the imaging unit according to claim 3 and generating an image signal in which blurring is reduced by an operation of an image stabilization unit constituting the imaging unit.

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