Light blocking unit and lens barrel including the same

Abstract

To provide a light blocking unit of a lens barrel with a flexible printed circuit board including a sensor fixed with a fixing screw capable of preventing a sensor signal path from being damaged.SOLUTION: The light blocking unit includes: multiple aperture blades; a drive ring that rotates to drive the multiple aperture blades; a sensor 58 for detecting the rotation angle of the drive ring; a flexible printed circuit board 50 including the sensor 58; a base member 32 that includes a placement surface 32h for placing the flexible printed circuit board 50 and a female thread hole 32j; a fixing screw 56 that engages with the female thread hole 32j for fixing a first part 50a of the flexible printed circuit board 50 provided with the sensor 58 to the placement surface 32h of the base member 32; and a sheet member 50b that is interposed between a head 56a of the fixing screw 56 and the first part 50a of the flexible printed circuit board 50. The base member 32 includes a locking portion 32n that restricts the rotation of the seat member 50b.SELECTED DRAWING: Figure 11

Description

Technical Field

[0001] The present disclosure relates to a light shielding unit for adjusting the amount of light passing through a lens barrel and a lens barrel including the same.

Background Art

[0002] Patent Document 1 discloses a diaphragm device (light shielding unit) for a camera including a Hall element (sensor) for detecting the rotation angle of a drive ring that drives a plurality of diaphragm blades. The Hall element detects a magnet adhered to the drive ring. The Hall element is provided on a flexible printed circuit board. The flexible printed circuit board is fixed to a base member that rotatably supports the drive ring via a fixing screw, so that the Hall element is appropriately arranged with respect to the magnet of the drive ring.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the case of the light shielding unit described in Patent Document 1, due to the rotation of the head of the fixing screw during the attachment of the flexible printed circuit board, a shearing force parallel to the surface acts on the surface of the flexible printed circuit board that contacts the head of the fixing screw. Due to the shearing force, the flexible printed circuit board may rotate, and as a result, the signal path of the Hall element (sensor) may be damaged.

[0005] For example, when the hole element strongly contacts the base member due to the rotation of the flexible printed circuit board and the contact state is maintained, the flexible printed circuit board is maintained in a state where internal stress is generated. Due to this stress, the flexible printed circuit board may be damaged. Also, the solder that electrically connects the hole element and the flexible printed circuit board is also maintained in a state where internal stress is generated. Depending on the stress, the solder may be damaged. That is, there is a possibility that the signal path of the sensor is damaged.

[0006] Therefore, an object of the present disclosure is to suppress damage to the signal path of a sensor in a light shielding unit of a lens barrel in which a flexible printed circuit board including the sensor is fixed by a fixing screw.

Means for Solving the Problems

[0007] In order to solve the above problems, according to one aspect of the present disclosure, a plurality of aperture vanes, a drive ring that rotates to drive the plurality of aperture vanes, a sensor for detecting the rotation angle of the drive ring, a flexible printed circuit board including the sensor, a base member that rotatably supports the drive ring and includes a mounting surface and a threaded hole on which the flexible printed circuit board is placed, a fixing screw that engages with the threaded hole and fixes a first portion of the flexible printed circuit board provided with the sensor to the mounting surface of the base member, and a sheet member interposed between the head of the fixing screw and the first portion of the flexible printed circuit board, wherein the base member includes a locking portion that restricts rotation of the sheet member, and a light shielding unit is provided.

[0008] Also, according to another aspect of the present disclosure, at least one lens, and the light shielding unit, and a lens barrel is provided.

Advantages of the Invention

[0009] According to the present disclosure, in a light shielding unit of a lens barrel to which a flexible printed circuit board provided with a sensor is fixed by a fixing screw, damage to the signal path of the sensor can be suppressed.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, a more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid making the following description unnecessarily redundant and to facilitate the understanding of those skilled in the art.

[0012] Note that the inventors provide the accompanying drawings and the following description for those skilled in the art to fully understand the present disclosure, and do not intend to limit the subject matter described in the claims thereby.

[0013] Hereinafter, a lens barrel according to an embodiment of the present disclosure will be described with reference to the drawings.

[0014] FIG. 1 is a front perspective view of a lens barrel according to an embodiment of the present disclosure. FIG. 2 is a rear perspective view of the lens barrel. And FIG. 3 is a schematic cross-sectional view of the lens barrel.

[0015] Here, the X - Y - Z orthogonal coordinate system shown in the figures is for facilitating the understanding of the embodiments of the present disclosure and does not limit the embodiments of the present disclosure. The Z - axis direction is the extending direction of the optical axis of the lens barrel, and the X - axis direction and the Y - axis direction are directions orthogonal to the extending direction of the optical axis. Note that in this specification, "front side (F)" is the subject side, and "rear side (R)" is the imaging device side.

[0016] As shown in FIGS. 1 to 3, the lens barrel 10 according to the present embodiment includes a plurality of lenses 12 to 20. The lens 12 is the lens closest to the subject side, and the lens 14 is the lens closest to the imaging device side. Further, the lens barrel 10 has a light shielding unit 30 disposed between the lenses 16 and 18 for adjusting the amount of light passing through the lens barrel 10.

[0017] FIG. 4 is a front perspective view of the light shielding unit with the aperture blade 34 opened. Further, FIG. 5 is a rear perspective view of the light shielding unit with the aperture blade 34 opened. Furthermore, FIG. 6 is a front perspective view of the light shielding unit with the aperture blade 34 closed. Still further, FIG. 7 is a front exploded perspective view of the light shielding unit. And FIG. 8 is a rear exploded perspective view of the light shielding unit.

[0018] As shown in FIGS. 7 and 8, the light shielding unit 30 includes a base member 32, a plurality of aperture blades 34, a drive ring 36 that drives the plurality of aperture blades 34, a first sheet 38 disposed on the front side with respect to the plurality of aperture blades 34, a second sheet 40 disposed on the rear side with respect to the plurality of aperture blades 34, and a cover member 42.

[0019] The base member 32 has a shape in which a cylindrical wall extends from a substantially annular end face toward the rear of the lens barrel 10. The base member 32 houses the plurality of aperture blades 34, the drive ring 36, the first sheet 38, and the second sheet 40.

[0020] The plurality of aperture blades 34 are members for adjusting the amount of light passing through the lens barrel 10. In the case of the present embodiment, the light shielding unit 30 includes nine aperture blades 34 having the same shape. Each of the plurality of aperture blades 34 is rotatably supported by the base member 32 about a rotation center line extending in the extending direction (Z-axis direction) of the optical axis C of the lens barrel 10. For this purpose, each of the plurality of aperture blades 34 is provided with a through hole 34a, and the base member 32 is provided with a plurality of support pins 32a that pass through the respective through holes 34a. When the plurality of aperture blades 34 rotate, the light shielding unit 30 is in the opened state shown in FIG. 4 or the closed state shown in FIG. 6. That is, when the plurality of aperture blades 34 rotate, the opening area of the opening 30a of the light shielding unit 30 through which light passes changes, and as a result, the amount of light passing through the light shielding unit 30 changes.

[0021] The drive ring 36 is a ring-shaped member disposed between the base member 32 and the plurality of aperture vanes 34. Further, the drive ring 36 is supported by the base member 32 so as to be rotatable about the optical axis C. When the drive ring 36 rotates, each of the plurality of aperture vanes 34 is driven from the open state shown in FIG. 4 to the closed state shown in FIG. 6 or vice versa. For this purpose, each of the plurality of aperture vanes 34 includes a cam groove 34b, and the drive ring 36 includes a plurality of pin-shaped cam followers 36a that are driven in the respective cam grooves 34b.

[0022] Also, in the case of this embodiment, the drive ring 36 is rotationally driven by a motor 44. For this purpose, the light shielding unit 30 includes a drive gear 46 attached to the motor 44 and a power transmission gear 48 that meshes with the drive gear 46. The power transmission gear 48 includes a large-diameter gear portion 48a that meshes with the drive gear 46 and a small-diameter gear portion 48b that meshes with gear teeth 36b formed on the drive ring 36. Note that the power transmission gear 48 is supported by a support pin 32b provided on the base member 32.

[0023] The motor 44 is electrically connected to the contact terminal 52 shown in FIG. 1 via a flexible printed circuit board 50. Thereby, the motor 44 is electrically connected to the imaging device via the contact terminal 52. Also, the motor 44 is fixed to the base member 32 by a fixing screw 54, and the flexible printed circuit board 50 is fixed to the base member 32 via a fixing screw 56. Note that, as shown in FIG. 8, a position sensor 58 for detecting the rotation angle of the drive ring 36 (specifically, the position of a tongue piece 36c provided on the drive ring 36) is mounted on the flexible printed circuit board 50.

[0024] The first and second sheets 38 and 40 are annular sheet members in which openings 38a and 40a are formed, and are made of a material having light-shielding properties and smoothness, such as a PET sheet. The first sheet 38 is disposed between the base member 32 and the plurality of aperture vanes 34. The second sheet 40 is disposed between the plurality of aperture vanes 34 and the cover member 42. That is, the first and second sheets 38 and 40 are provided in the light-shielding unit 30 in a state of sandwiching the plurality of aperture vanes 34 in the extending direction of the optical axis C (Z-axis direction). In the case of the present embodiment, the diameter of the opening 40a of the second sheet 40 is the aperture of the lens barrel 10.

[0025] While sliding on the surfaces of the first and second sheets 38 and 40, the plurality of aperture vanes 34 are rotated by the drive ring 36. The first and second sheets 38 and 40 having smoothness enable the drive ring 36 to be rotated with low torque. The first and second sheets 38 and 40 include engagement holes 38b and 40b that engage with the support pins 32a of the base member 32, and long holes 38c and 40c through which the cam followers 36a of the drive ring 36 pass.

[0026] The cover member 42 is a disk-shaped member having an opening 42a and is attached to the base member 32. In the case of the present embodiment, the cover member 42 engages with the base member 32 by snap fit. For this purpose, a plurality of hooks 32c are provided on the base member 32, and recesses 42b that engage with the hooks 32c are formed on the cover member 42. After snap fitting, the cover member 42 is fixed to the base member 32 via a fixing screw 60. The cover member 42 is formed with a plurality of support holes 42c that support the tips of the plurality of support pins 32a of the base member 32, and a plurality of guide grooves 42d that guide the plurality of cam followers 36a of the drive ring 36. When such a cover member 42 is attached to the base member 32, the plurality of aperture vanes 34, the drive ring 36, the first sheet 38, and the second sheet 40 are accommodated in the space defined by the cover member 42 and the base member 32.

[0027] Supplementary note: As shown in FIG. 8, the drive ring 36 is housed in the annular recess 32d of the base member 32. The plurality of throttle vanes 34, the first sheet 38, and the second sheet 40 are not housed in the recess 32d but are arranged between the inner and outer annular surfaces 32e and 32f located inside and outside the annular recess 32d and the cover member 42. Therefore, the plurality of support pins 32a that support the plurality of throttle vanes 34, the first sheet 38, and the second sheet 40 are provided on the outer annular surface 32f.

[0028] From here, further features of the light-shielding unit 30 according to the present embodiment will be described.

[0029] FIG. 9 is a perspective view of the base member with the motor and the flexible printed circuit board attached. FIG. 10 is a front view of a part of the base member with the motor and the flexible printed circuit board attached. Further, FIG. 11 is a perspective view of the base member with the motor and the flexible printed circuit board removed. Furthermore, FIG. 12 is a front view of a part of the base member. And FIG. 13 is a developed view of the flexible printed circuit board.

[0030] As shown in FIGS. 11 and 12, on the front surface of the base member 32, a mounting surface 32g on which the motor 44 is mounted and fixed and a mounting surface 32h on which the flexible printed circuit board 50 is mounted and fixed are formed. The motor 44 is fixed to the mounting surface 32g of the base member 32 via a fixing screw 54. For this purpose, a threaded hole 32i that engages with the fixing screw 54 is formed in the mounting surface 32g.

[0031] The flexible printed circuit board 50 is fixed to the mounting surface 32h of the base member 32 via a fixing screw 56. For this purpose, a threaded hole 32j that engages with the fixing screw 56 is formed in the mounting surface 32h.

[0032] Specifically, as shown in FIG. 13, the flexible printed circuit board 50 includes a first portion 50a provided with a position sensor 58. Also, in the case of this embodiment, the flexible printed circuit board 50 includes a second portion 50b different from the first portion 50a. Further, in the case of this embodiment, the flexible printed circuit board 50 includes a third portion 50c electrically connected to the motor 44 and a fourth portion 50d electrically connected to the contact terminal 52.

[0033] As shown in FIGS. 9 to 11, the first portion 50a of the flexible printed circuit board 50 is placed on the mounting surface 32h of the base member 32 with the position sensor 58 facing the mounting surface 32h. For this purpose, as shown in FIGS. 11 to 12, a recess 32k for accommodating the position sensor 58 is formed in the mounting surface 32h.

[0034] As shown in FIG. 12, a through hole 36l through which the tongue piece 36c of the drive ring 36 detected by the position sensor 58 passes is formed at the bottom of the recess 32k. Also, a positioning surface 32m for positioning the position sensor 58 in one direction (a direction orthogonal to both the radial direction of the lens barrel 10 and the optical axis C) is provided in the recess 32k by contacting the position sensor 58.

[0035] In the case of this embodiment, the flexible printed circuit board 50 is bent so that the second portion 50b overlaps the first portion 50a of the flexible printed circuit board 50 placed on the mounting surface 32h of the base member 32. By bending the flexible printed circuit board 50 along the valley fold line L1 shown in FIG. 13, the second portion 50b overlaps the first portion 50a. In FIG. 13, the dashed line indicates the valley fold line, and the chain double-dashed line indicates the mountain fold line.

[0036] As shown in FIG. 13, in the case of this embodiment, first and second through-holes 50e and 50f through which the fixing screw 56 passes are formed in the first portion 50a and the second portion 50b of the flexible printed circuit board 50, respectively. When the second portion 50b overlaps the first portion 50a, as shown in FIG. 11, the first and second through-holes 50e and 50f also overlap. Further, when the position sensor 58 provided in the first portion 50a is positioned by the positioning surface 32m of the base member 32, each of the through-holes 50e and 50f overlaps with the screw hole 32j of the base member 32. The fixing screw 56 passes through the first and second through-holes 50e and 50f, respectively, and engages with the screw hole 32j. As a result, the first portion 50a and the second portion 50b of the flexible printed circuit board 50 are fixed to the mounting surface 32h of the base member 32 while overlapping each other and are positioned. Incidentally, although the reason will be described later, the first through-hole 50e is made larger than the second through-hole 50f.

[0037] Also, as shown in FIGS. 9 to 12, the base member 32 is provided with a locking portion 32n that restricts the rotation of the second portion 50b of the flexible printed circuit board 50. In the case of this embodiment, the locking portion 32n is a locking pin that protrudes from the mounting surface 32h. A locking hole 50g that engages with the locking portion 32n is provided in the second portion 50b of the flexible printed circuit board 50.

[0038] The reason for restricting the rotation of the second portion 50b by the locking portion 32n while fixing the first portion 50a and the second portion 50b of the flexible printed circuit board 50 to the base member 32 via the fixing screw 56 in a state where they overlap each other will be described.

[0039] As shown in FIG. 11, in order to engage the fixing screw 56 with the female screw hole 32j, the head 56a of the fixing screw 56 is rotated by a screwdriver. When the rotating head 56a of the fixing screw 56 contacts the second portion 50b of the flexible printed circuit board 50, a shearing force parallel to the surface is generated on the surface of the second portion 50b that contacts the head 56a. Due to the shearing force, the second portion 50b tends to rotate about the rotation center line extending in the axial direction of the fixing screw 56. However, the rotation of the second portion 50b is restricted by the locking portion 32n provided on the base member 32.

[0040] On the other hand, in the first portion 50a of the flexible printed circuit board 50, since it does not directly contact the rotating head 56a of the fixing screw 56 and the rotation of the second portion 50b is restricted, a shearing force parallel to the surface (the surface facing the second portion 50b) does not occur. Therefore, the rotation of the first portion 50a is restricted. As a result, the rotation of the first portion 50a such that the position sensor 58 provided on the first portion 50a continues to strongly contact the base member 32 hardly occurs. As a result, damage to the solder that electrically connects the position sensor 58 and the flexible printed circuit board 50 is suppressed, and damage to the signal path of the position sensor 58 on the flexible printed circuit board 50 is suppressed.

[0041] Note that, different from the present embodiment, it is conceivable to directly fix the first portion 50a to the base member 32 with the fixing screw 56 without providing the second portion 50b and to prevent the first portion 50a from rotating with the locking portion 32n. However, when the locking hole 50g and the positioning sensor 58 are formed in the first portion 50a, either the position of the mounting of the locking hole or the positioning sensor, or both positions may be largely displaced. In that case, there is a risk that the positioning sensor 58 may deviate from the designed position or may not enter the recess 32k.

[0042] Of course, in the case of this embodiment, internal stress is generated in the region between the second through hole 50f and the locking hole 50g of the second portion 50b. However, no conductor pattern such as the signal path of the position sensor 58 (in addition to the signal path of the motor 44) is provided in the second portion 50b. Therefore, even if internal stress is generated in the second portion 50b due to the rotation of the head 56a of the fixing screw 56, it does not affect the signal path of the position sensor 58.

[0043] In the case of this embodiment, as described above, the diameter of the first through hole 50e of the first portion 50a through which the fixing screw 56 passes is made larger than the second through hole 50f of the second portion 50b. That is, the area of the region of the first portion 50a facing the head 56a of the fixing screw 56 is smaller than the area of the region of the second portion 50b facing the head 56a of the fixing screw 56. Thereby, the rotation of the first portion 50a due to the rotation of the head 56a of the fixing screw 56 is suppressed.

[0044] Also, in the case of this embodiment, as shown in FIG. 10, in a direction perpendicular to the mounting surface 32h of the base member 32 (that is, in the direction of the extension of the optical axis C), a part of the second portion 50b of the flexible printed circuit board 50 overlaps at least a part of the position sensor 58. Thereby, the detachment of the position sensor 58 from the concave portion 32k of the base member 32 is suppressed. Specifically, by overlapping the first portion 50a so that the second portion 50b overlaps the position sensor 58, the generation of deflection of the first portion 50a is suppressed, and thereby, the first portion 50a is deflected and the position sensor 58 is detached from the concave portion 32k is suppressed. That is, the position sensor 58 is maintained in the concave portion 32k by the first portion 50a and the second portion 50b.

[0045] Furthermore, in the case of this embodiment, as shown in FIGS. 10 to 12, a convex portion 32p is provided in the base member 32 near the opening of the female screw hole 32j. In the case of this embodiment, the convex portion 32p is in an arc shape along the opening of the female screw hole 32j. Also, the convex portion 32p overlaps a part of the head 56a of the fixing screw 56 while facing the position sensor 58 with the female screw hole 32j therebetween when viewed in the direction orthogonal to the mounting surface 32h (i.e., when viewed in the extending direction of the optical axis C). Due to such a convex portion 32p, the first portion 50a and the second portion 50b of the flexible printed circuit board 50 are fixed to the mounting surface 32h not in a flat state but in a state convex along toward the mounting surface 32h. As a result, the position sensor 58 is more maintained within the concave portion 32k of the mounting surface 32h by the restoring force (elastic force) of the first and second portions 50a, 50b.

[0046] In the case of this embodiment, as shown in FIG. 13, reinforcing sheets 62 and 64 are attached to the first and second portions 50a and 50b of the flexible printed circuit board 50, respectively. Thereby, the elastic forces of the first and second portions 50a and 50b are increased.

[0047] Note that, unlike this embodiment, when the flexible printed circuit board 50 (particularly the first and second portions 50a and 50b) is made of a material having a high elastic force, the second portion 50b does not have to overlap the position sensor 58, and the convex portion 32p does not have to be provided in the base member 32.

[0048] According to the embodiment as described above, in a light-shielding unit of a lens barrel in which a flexible printed circuit board having a sensor is fixed by a fixing screw, damage to the signal path of the sensor can be suppressed.

[0049] As described above, the embodiments of the present disclosure have been described by way of the above-described embodiments, but the embodiments of the present disclosure are not limited to the above-described embodiments.

[0050] For example, in the case of the above-described embodiment, as shown in FIGS. 9 to 11, the locking hole 50g of the second portion 50b of the flexible printed circuit board 50 is engaged with the pin-shaped locking portion 32n of the base member 32. Thereby, rotation of the second portion 50b is suppressed as the head 56a of the fixing screw 56 rotates. However, the suppression of the rotation of the second portion 50b is not limited thereto. For example, a convex portion that contacts the outer peripheral edge of the second portion 50b may be provided on the base member 32 as a locking portion.

[0051] Also, in the case of the above-described embodiment, as shown in FIG. 13, the first and second portions 50a, 50b of the flexible printed circuit board 50 are provided with first and second through holes 50e, 50f through which the fixing screw 56 passes. Instead of these first and second through holes, "U"-shaped cutout portions through which the fixing screw 56 passes may be provided in the first and second portions 50a, 50b, respectively.

[0052] Furthermore, in the case of the above-described embodiment, a second portion 50b of the flexible printed circuit board 50 different from the first portion 50a is interposed between the first portion 50a of the flexible printed circuit board 50 and the head 56a of the fixing screw 56. However, the present embodiment is not limited thereto. The member interposed between the first portion 50a of the flexible printed circuit board 50 and the head 56a of the fixing screw 56 may not be a part of the flexible printed circuit board and may be another sheet-like member.

[0053] That is, the light-shielding unit according to the embodiment of the present disclosure broadly includes a plurality of diaphragm vanes, a drive ring that rotates to drive the plurality of diaphragm vanes, a sensor for detecting the rotation angle of the drive ring, a flexible printed circuit board provided with the sensor, a base member that rotatably supports the drive ring and has a mounting surface and a threaded hole on which the flexible printed circuit board is placed, a fixing screw that engages with the threaded hole and fixes a first portion of the flexible printed circuit board provided with the sensor to the mounting surface of the base member, and a sheet member interposed between the head of the fixing screw and the first portion of the flexible printed circuit board. The base member includes a locking portion that restricts the rotation of the sheet member, and is a light-shielding unit.

[0054] As described above, as an example of the technology in the present disclosure, the above-described embodiments have been explained. For this purpose, drawings and detailed descriptions have been provided. Therefore, among the components described in the drawings and the detailed description, not only the components essential for solving the problems but also the components not essential for solving the problems may be included for exemplifying the above-described technology. Therefore, it should not be immediately recognized that those non-essential components are essential just because they are described in the drawings or the detailed description.

[0055] In addition, since the above-described embodiments are for exemplifying the technology in the present disclosure, various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or their equivalents.

Industrial Applicability

[0056] The present disclosure is applicable to a lens barrel including a light-shielding unit.

Explanation of Reference Numerals

[0057] 32 Base member 32h Mounting surface 32j Threaded hole 32n Locking portion 34 Diaphragm vane 36 Drive Ring 50 Flexible Printed Circuit Board 50a First Portion 50b Second Portion (Sheet Member) 56 Fixing Screw 58 Position Sensor (Sensor)

Claims

1. A plurality of aperture vanes, a drive ring that rotates to drive the plurality of aperture vanes, a sensor for detecting the rotation angle of the drive ring, a flexible printed circuit board provided with the sensor, a base member that rotatably supports the drive ring and has a mounting surface and a tapped hole on which the flexible printed circuit board is placed, a fixing screw that engages with the tapped hole and fixes a first portion of the flexible printed circuit board provided with the sensor to the mounting surface of the base member, and a sheet member interposed between the head of the fixing screw and the first portion of the flexible printed circuit board, wherein the base member includes a locking portion that restricts rotation of the sheet member, a light shielding unit.

2. The sheet member is a second portion different from the first portion on the flexible printed circuit board, The light shielding unit according to claim 1, wherein the flexible printed circuit board is bent so that the second portion overlaps the first portion.

3. The light shielding unit according to claim 2, wherein first and second through holes through which the fixing screw passes are provided in each of the first portion and the second portion on the flexible printed circuit board.

4. The light shielding unit according to claim 3, wherein the first through hole is larger than the second through hole.

5. The base member includes a locking pin as the locking portion, The light shielding unit according to claim 2, wherein a locking hole through which the locking pin passes is provided in the second portion of the flexible printed circuit board.

6. The base member includes a recess in which the sensor is accommodated on the mounting surface, The light shielding unit according to claim 2, wherein a part of the second portion of the flexible printed circuit board overlaps at least a part of the sensor when viewed in a direction orthogonal to the mounting surface.

7. The light shielding unit according to claim 6, wherein a convex portion is formed on the base member so as to overlap a part of the head of the fixing screw while facing the sensor with the tapped hole interposed therebetween when viewed in a direction orthogonal to the mounting surface.

8. further having a motor provided on the base member for rotating the drive ring, The light shielding unit according to claim 1, wherein the flexible printed circuit board is connected to the motor.

9. at least one lens, A lens barrel having the light-shielding unit according to any one of claims 1 to 8.

Images