JP2016161588A - Lens barrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens barrel that attains ground strength and stabilization as an electrostatic discharge (ESD) or electro-magnetic interference (EMI) measurement.SOLUTION: A lens barrel comprises: a base stationary member 14; electric circuit substrates 22 and 23 that are disposed in an inner part of the base stationary member, and have an electric circuit and a ground pattern implementing control processing or signal processing mounted; a terminal block 21 that includes a plurality of contact terminals 20 including a plurality of ground contact terminals 20G to be connected to the ground pattern of the electric circuit substrate; and a metal-made mount ring 10 that is coupled to a mount part of devices. The plurality of ground contact terminals is formed so that at least a part is exposed in an outer peripheral face of the terminal block, and the outer peripheral face of the terminal block is disposed with the outer peripheral face brought into contact with an inner peripheral face of the mount ring.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lens barrel having a structure capable of realizing ground reinforcement and stabilization in response to electrostatic discharge (ESD) and unnecessary radiation (EMI).

  In recent years, an optical image formed by an imaging optical system is converted into electronic image data using a photoelectric conversion element or the like and stored in a storage medium, or a display device is used based on the image data. In general, an imaging device (digital camera, video camera, etc.) configured to display an image has been put into practical use and widely used. In this type of imaging apparatus, there is a so-called interchangeable lens type imaging apparatus in which a lens barrel having an imaging optical system is configured to be detachable from the front surface of a camera body (body).

  In this type of imaging apparatus, various electronic circuit boards for a control processing system and a signal processing system are provided in the camera body (body) side, and the lens barrel is similarly provided in the lens barrel side. In order to perform internal control processing, signal processing, and the like, a configuration in which various electronic circuit boards are provided is a common form.

  Therefore, not only the camera body (body) but also the lens barrel side is compatible with electrostatic discharge (ESD), unnecessary radiation (EMI), and ground (GND) as a countermeasure to suppress these. ; Grounding area must be secured.

  In general, a lens barrel used for an imaging apparatus or the like is formed in a cylindrical shape as a whole, and an imaging optical system and a driving mechanism thereof are disposed in a main part inside the lens barrel. For this reason, the electronic circuit board provided on the lens barrel side must be arranged using a narrow and limited space, and the shape tends to be indefinite. Therefore, a sufficient ground area cannot be ensured in the lens barrel, and thus further contrivances regarding countermeasures against electrostatic discharge (ESD) and unnecessary radiation (EMI) are required.

  Further, in recent imaging apparatuses, for the purpose of reducing the size and weight and improving the appearance quality, a main component such as an exterior member, for example, a non-conductive material that is easy to process, such as a resin material, is used. It is increasing.

  For example, in an imaging apparatus disclosed in Japanese Patent Application Laid-Open No. 2014-240858, a camera mount unit is formed by integrally forming a metal member and a resin member. Specifically, the outer peripheral surface of the camera mount portion is formed of a resin material excellent in slidability and wear resistance, and is a portion on the inner side of the outer peripheral surface so that a relatively large force is applied. In such a portion (for example, a portion that supports the weight of the lens barrel), a metal material having high strength is used.

  On the other hand, in the lens barrel disclosed in Japanese Patent Application Laid-Open No. 2011-145322, in order to make the ground pattern of the lens control electronic circuit board and the metal lid (metal mount part) conductive, the above-mentioned board is provided by a buffer member. By pressing a screw for fixing the metal member toward the metal member, electrical contact with the metal mount portion is secured through the metal member.

JP 2014-240858 A JP 2011-145322 A

  However, in the imaging device disclosed in Japanese Patent Application Laid-Open No. 2014-240858, a part of the camera mount portion is formed of a resin material. As a result, the contact area between the metal parts cannot be sufficiently ensured at the connection part of the metal, and therefore, a sufficient ground (GND) area for countermeasures such as electrostatic discharge (ESD) and unnecessary radiation (EMI) can be secured. There is a problem that can not be.

  In addition, in the imaging device disclosed in the above Japanese Patent Application Laid-Open No. 2011-145322, a large number of constituent members (such as a buffer member and a conductive connection member) interposed between the electronic circuit board and the metal mount portion are required. As a result, the assembly and maintainability become complicated, and variations due to assembly are likely to occur due to the accuracy of individual parts, and a stable ground (GRD) cannot be obtained.

  The present invention has been made in view of the above-described points, and an object of the present invention is to realize ground reinforcement and ground stabilization in response to electrostatic discharge (ESD) and unnecessary radiation (EMI). It is an object of the present invention to provide a lens barrel having such a structure.

  In order to achieve the above object, a lens barrel according to an aspect of the present invention includes a basic fixing member, an electronic circuit that is disposed inside the basic fixing member and performs control processing or signal processing, and a ground pattern. An electronic circuit board, a terminal block having a plurality of contact terminals including a plurality of ground contact terminals connected to the ground pattern of the electronic circuit board, and a metal mount ring connected to the mount portion of the device, The plurality of ground contact terminals are formed so that at least a part thereof is exposed to the outer peripheral surface of the terminal block, and the outer peripheral surface of the terminal block contacts the inner peripheral surface of the mount ring. Are arranged.

  According to the present invention, it is possible to provide a lens barrel having a structure capable of realizing ground strengthening and ground stabilization corresponding to electrostatic discharge (ESD) and unnecessary radiation (EMI).

1 is an external side view of the lens barrel of the first embodiment of the present invention when viewed from the side. 1 is a rear view of the lens barrel of FIG. 1 when viewed from the rear. 1 is an enlarged vertical cross-sectional view of the main part showing the internal structure of the part indicated by arrow [A] in FIG. FIG. 1 is an enlarged perspective view of a main part of the lens barrel of FIG. 4 is an external view of a part of an electronic circuit board and a plurality of contact terminals as viewed from the top, with the resin molded portion of the terminal block removed. FIG. 2 is an enlarged vertical sectional view of a main part showing an enlarged internal structure of a part of a lens barrel of the second embodiment of the present invention (a part corresponding to a part indicated by arrow [A] in FIG. 1). Sectional view corresponding to the portion along the line [B]-[B]) The principal part expansion perspective view which takes out and shows only a terminal block and an electronic circuit board among the lens barrels of this embodiment. 7 is an external view of a part of an electronic circuit board and a plurality of contact terminals as viewed from the top, with the resin molded portion of the terminal block removed. FIG. 2 is an enlarged vertical sectional view of an essential part showing an internal structure of a part of a lens barrel of the third embodiment of the present invention (a part corresponding to the part indicated by arrow [A] in FIG. 1). (B) A cross-sectional view corresponding to a portion along the line [C]) The principal part expansion perspective view which takes out and shows only a terminal block and an electronic circuit board among the lens barrels of this embodiment. 10 is an external view of a part of an electronic circuit board and a plurality of contact terminals as viewed from the top, with the resin molded portion of the terminal block removed from FIG.

  The present invention will be described below with reference to the illustrated embodiments. Each drawing used in the following description is schematically shown. In order to show each component in a size that can be recognized on the drawing, the dimensional relationship and scale of each member are different for each component. May be shown. Therefore, the present invention is limited to the illustrated embodiments with respect to the number of components, the shape of the components, the size ratio of the components, the relative positional relationship of the components, and the like described in the drawings. It is not something.

  In each embodiment of the present invention, for example, an optical image formed by an imaging optical system including an optical lens or the like is photoelectrically converted using a solid-state imaging device, and an image signal obtained thereby is converted into a digital image representing a still image or a moving image. An image pickup apparatus (hereinafter referred to as an image pickup apparatus) configured to convert the image data into image data, store the generated digital image data in a storage medium, and reproduce and display a still image or a moving image on a display device based on the digital image data This is an example when applied to a lens barrel configured to be detachable from the camera.

In this embodiment, the optical axis of the photographing optical system in the lens barrel is denoted by reference symbol O. In the direction along the optical axis O, the side with the subject facing the front surface of the camera (not shown) to which the lens barrel is mounted is referred to as the front, and the mount portion of the lens barrel is disposed. Let the side be the rear.
[First Embodiment]
1 and 2 are views showing the appearance of the lens barrel of the first embodiment of the present invention. Among these, FIG. 1 is an external side view when viewed from the side of the lens barrel of the present embodiment. FIG. 2 is an external rear view when viewed from the rear of the lens barrel. FIG. 3 is an enlarged vertical cross-sectional view of a main part showing the internal structure of the part indicated by the arrow [A] in FIG. 3 is a cross section taken along the line [B]-[B] in FIG. FIG. 4 is an enlarged perspective view of the main part showing only the terminal block and the electronic circuit board out of the lens barrel of the present embodiment. FIG. 5 is an external view of a part of the electronic circuit board and a plurality of contact terminals as viewed from above, with the resin molded portion of the terminal block removed from FIG.

  First, an outline of the entire configuration of the lens barrel 1 of the present embodiment will be described below with reference to FIGS. The lens barrel 1 of this embodiment is an interchangeable lens barrel that is attached to the front surface of a camera (not shown). Therefore, the lens barrel 1 is a lens-side mount ring (hereinafter simply referred to as a mount ring) formed so as to be able to be bayonet-coupled to a mount portion (not shown) that is a lens mounting portion on the camera (not shown) side. 10). The mount ring 10 is configured to have a bayonet claw, and is an annular member formed by, for example, machining a metal member (conductive member). The mount ring 10 is fastened and fixed at the rearmost end portion of the lens barrel 1 by using a plurality of (four in this embodiment) screws 10a to a fixing portion such as a chassis 14 that is a basic fixing member. Yes.

  The lens barrel 1 is formed into a cylindrical shape as a whole using a plurality of cylindrical members including a chassis 14 which is a basic fixing member and is a part of an exterior member. Inside the lens barrel 1, an imaging optical system (not shown) composed of a plurality of optical lenses and the like, and a plurality of holding frames (not shown) for holding the plurality of optical lenses constituting the imaging optical system, respectively. , And a structural unit such as a drive mechanism (not shown) for driving the plurality of holding frames back and forth in the direction along the optical axis O. Since these internal components are portions not directly related to the present embodiment, the illustration and detailed description of the configuration are omitted.

  On the outer surface of the lens barrel 1, for example, various operation members such as a zoom ring 11, a focus ring 12, a lens function button 13, and a tripod seat (not shown) prepared separately from the lens barrel 1 are provided. A plurality of tripod seat positioning bosses 15 are provided for positioning when mounting. In the present embodiment, as shown in FIG. 2, four tripod seat positioning bosses 15 are provided.

  In the lens barrel 1 of the present embodiment configured as described above, the internal configuration of the vicinity portion (the portion indicated by the arrow sign [A] shown in FIG. 1) of the internal configuration in which the mount ring 10 is disposed. Details will be described below mainly with reference to FIGS.

  The chassis 14 is disposed as an exterior member at the rear end portion of the lens barrel 1. A frame 16 that is a fixing member for fixing and supporting various internal constituent units of the lens barrel 1 and is formed in a substantially cylindrical shape is disposed inside the chassis 14. The frame 16 is made of a resin material.

  The mount ring 10 is fixed to the rear end portion on the inner peripheral side of the frame 16 in a fitted state. In this case, a packing member 17 made of an elastic member such as rubber is interposed between the inner peripheral surface of the frame 16 and the outer peripheral surface of the mount ring 10. The packing member 17 prevents dust and water droplets from entering the lens barrel 1 and maintains watertightness to the outside, thereby realizing a dustproof and splashproof structure for the lens barrel 1. Is provided.

  A terminal block 21 is disposed on the inner peripheral side of the mount ring 10. The terminal block 21 is made of a resin member in which a plurality of contact terminals 20 made of a metal material are integrally formed by insert molding, for example, and is a support body that supports the plurality of contact terminals 20.

  The terminal block 21 is fixed to a predetermined portion (not shown) on the inner peripheral side of the mount ring 10 with a positioning notch 21c positioned and fixed, for example, using screws or the like. . For this purpose, a screw hole 21 a is provided on the outer peripheral surface side of the terminal block 21. At this time, the outer peripheral surface of the terminal block 21 is in contact with the inner peripheral surface of the mount ring 10 so that the respective surfaces can come into contact with each other. It is formed to be an arcuate curved surface with a curvature matched to the surface.

  The plurality of contact terminals 20 provided on the terminal block 21 are a plurality of contacts provided corresponding to a plurality of contact terminals (not shown) provided in a mount portion (not shown) on the camera (not shown) side. It is. Accordingly, when the lens barrel 1 of the present embodiment is attached to the camera (not shown), each of the plurality of contact terminals 20 is mounted on the camera (not shown) side mounting portion (not shown). The plurality of contact terminals (not shown) are brought into contact with each other to ensure electrical connection between the lens barrel 1 and the camera (not shown).

  Electronic circuit boards (22, 23) are arranged on the inner side of the terminal block 21. This electronic circuit board is a circuit board that is disposed inside the chassis 14 and is mounted with an electronic circuit that performs control processing and / or signal processing on the lens barrel 1 side, a ground pattern, and the like.

  As an example of the configuration of this electronic circuit board, in the present embodiment, an example configured by a hard substrate 23 and a flexible printed circuit board 22 is shown. That is, the hard substrate 23 is fixed to a fixing portion (not shown) inside the chassis 14 by using means (not shown) such as screws. One end of the flexible printed circuit board 22 is connected to or joined to the hard substrate 23 by means of a connector or soldering, and the flexible printed circuit board 22 is exposed from the base end of the terminal block 21 in the vicinity of the other end. The base end portions 20e of the plurality of contact terminals 20 (described later; see FIG. 3 and the like) are joined by a joining means such as soldering. With this configuration, the hard board 23 as an electronic circuit board is electrically connected to the plurality of contact terminals 20 of the terminal block 21 via the flexible printed board 22. The flexible printed circuit board 22 is arranged in a folded state inside the lens barrel 1.

  Some of the plurality of contact terminals 20 are ground contact terminals 20G connected to the ground pattern of the electronic circuit board (22, 23). In the present embodiment, an example in which three ground contact terminals 20G are provided is shown.

  The contact terminal 20 has a contact portion 20 a, which is a portion exposed toward the outer surface on the rear side of the terminal block 21, at one end, and a base end portion 20 e that is exposed at the base end of the terminal block 21. Configured. The contact portion 20a and the base end portion 20e are continuously connected in a state of being embedded in the terminal block 21.

  On the other hand, in the present embodiment, the ground contact terminal 20G among the plurality of contact terminals 20 is configured as follows. That is, the ground contact terminal 20G includes the contact portion 20a having the same form as the contact terminal 20, the extending portion 20b extending in the radial direction of the lens barrel 1 on the same plane from the contact portion 20a, An exposed portion 20c that is a portion extending along the optical axis along the outer peripheral surface of the terminal block 21 at the tip of the extended portion 20b and extending forward and exposed on the outer peripheral surface of the terminal block 21; The internal connection portion 20d that extends from the distal end of the exposed portion 20c toward the inside of the terminal block 21 and is embedded therein, and the distal end of the internal continuous portion 20d is the proximal end side of the terminal block 21 And a base end portion 20 e that extends to the outside and is exposed at the base end of the terminal block 21.

  When the lens barrel 1 is assembled, as described above, the outer peripheral surface of the terminal block 21 abuts along the inner peripheral surface of the mount ring 10 so that the surfaces come into contact with each other. Accordingly, at this time, the exposed portion 20c of the ground contact terminal 20G is in contact with the inner peripheral surface of the mount ring 10, and a conductive state is ensured between the ground contact terminal 20G and the mount ring 10.

  As described above, according to the first embodiment, the shape of the ground contact terminal 20G among the plurality of contact terminals 20 of the terminal block 21 fixed to the mount ring 10 is devised so that the ground contact terminal 20G is Since it is formed so as to be in direct contact with the mount ring 10 having a low ground impedance, a wide ground area can be secured and at the same time a low impedance can be realized. Therefore, an electronic circuit board provided inside the lens barrel 1 The ground potential difference between (22, 23) and the chassis 14 (the mount ring 10 connected to the chassis 14) that is the exterior member of the lens barrel 1 can be made the same as much as possible.

  Therefore, by taking countermeasures against electrostatic discharge (ESD) and unnecessary radiation (EMI) with the above configuration, it is possible to enhance the ground of the lens barrel 1 and stabilize the ground.

[Second Embodiment]
Next, a second embodiment of the present invention will be described below. The basic configuration of the present embodiment is substantially the same as that of the first embodiment described above, and a plurality of ground contact terminals among the plurality of contact terminals 20 that are integrally insert-molded in the terminal block 21 and embedded therein. Only the shape of 20GA is different. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, detailed description thereof is omitted, and different portions are described in detail below.

  6-8 is a figure which shows the 2nd Embodiment of this invention. Among these, FIG. 6 corresponds to FIG. 3 in the first embodiment described above, and the internal structure of a part of the lens barrel of the present embodiment (the portion corresponding to the portion indicated by the arrow [A] in FIG. 1). It is a principal part expanded longitudinal sectional view which expands and shows. FIG. 6 shows a cross section corresponding to a portion along line [B]-[B] in FIG. FIG. 7 corresponds to FIG. 4 in the first embodiment described above, and is an enlarged perspective view of a main part showing only the terminal block and the electronic circuit board in the lens barrel of the present embodiment. FIG. 8 corresponds to FIG. 5 in the first embodiment described above, and is an external view of a part of the electronic circuit board and a plurality of contact terminals as viewed from above, with the resin molded portion of the terminal block removed from FIG.

  In the lens barrel of the present embodiment, three of the contact terminals 20 provided on the terminal block 21 are provided as the ground contact terminals 20GA (see FIGS. 7 and 8). As shown in FIG. 6, the ground contact terminal 20GA in the present embodiment includes a contact portion 20a (same form as the contact portion 20a of the contact terminal 20 in the first embodiment described above) and the contact portion 20a. A first internal connecting portion 20bA which is a portion extending toward the inside of the terminal block 21 and embedded therein, and is exposed from the first internal connecting portion 20bA to the outside and exposed to the outer peripheral surface of the terminal block 21. The exposed portion 20cA and the second internal connecting portion 20d extending again from the exposed portion 20cA toward the inside of the terminal block 21 and embedded therein (internal connection of the contact terminal 20 in the first embodiment described above). And a base end portion 20e extending from the second internal connecting portion 20d (same form as the base end portion 20e of the contact terminal 20 in the first embodiment). Composed with That. And this base end part 20e is joined to the flexible printed circuit board 22 which is an electronic circuit board using joining means, such as soldering.

  That is, in the ground contact terminal 20GA of this embodiment, the form of the part exposed toward the outer peripheral surface of the terminal block 21 is different from the configuration of the ground contact terminal 20G shown in the first embodiment. . Specifically, instead of the exposed portion 20c of the ground contact terminal 20G in the first embodiment described above, the exposed portion of the above-described form (the form shown in FIG. 6 and the like) is used in the ground contact terminal 20G of the present embodiment. 20 cA is formed. Other configurations are the same as those in the first embodiment.

  Also in the lens barrel of the present embodiment configured as described above, when the lens barrel is assembled, the outer peripheral surface of the terminal block 21 abuts along the inner peripheral surface of the mount ring 10 and the surfaces contact each other. At this time, the exposed portion 20 c </ i> A of the ground contact terminal 20 </ b> GA contacts the inner peripheral surface of the mount ring 10. Thereby, a conductive state is ensured between the ground contact terminal 20GA and the mount ring 10.

  As described above, according to the second embodiment, the same effect as that of the first embodiment can be obtained.

[Third Embodiment]
Next, a third embodiment of the present invention will be described below. The basic configuration of the present embodiment is substantially the same as that of the second embodiment described above, and a plurality of ground contact terminals among a plurality of contact terminals 20 that are integrally insert-molded in the terminal block 21 and embedded therein. Only the shape of at least one of 20 GB (see reference numeral 20 GB) is different. Therefore, the same components as those in the first and second embodiments described above are denoted by the same reference numerals, detailed description thereof is omitted, and different portions are described in detail below.

  9-11 is a figure which shows the 3rd Embodiment of this invention. Of these, FIG. 9 corresponds to FIG. 3 (or FIG. 6 in the second embodiment) in the first embodiment described above, and a part of the lens barrel in this embodiment (arrow symbol [A] in FIG. 1). It is the principal part expansion longitudinal cross-sectional view which expands and shows the internal structure of the part which corresponds to the site | part shown by. FIG. 9 shows a cross section corresponding to a portion along the line [B]-[C] in FIG. 2 (note that the cross section is different from the portion in the first and second embodiments). . FIG. 10 corresponds to FIG. 4 in the first embodiment described above (or FIG. 7 in the second embodiment), and only the terminal block and the electronic circuit board are extracted from the lens barrel of the present embodiment. FIG. FIG. 11 corresponds to FIG. 5 in the first embodiment described above (or FIG. 8 in the second embodiment), and removes the resin-molded portion of the terminal block from FIG. 10 and a part of the electronic circuit board and a plurality of contacts. It is the external view which looked at the terminal from the upper surface.

  In the lens barrel of the present embodiment, three ground contact terminals are provided among the plurality of contact terminals 20 provided on the terminal block 21. Further, in the present embodiment, two of the three ground contact terminals are ground contact terminals 20GA having the same form as the second embodiment, and the other is a ground contact terminal 20GB having a different form. It is composed.

  In the present embodiment, the ground contact terminal 20GB of the different form is basically the same configuration as the ground contact terminal 20GA in the second embodiment, but the exposed portion 20cB exposed on the outer peripheral surface of the terminal block 21. The shape is different.

  That is, the exposed portion 20cB of the ground contact terminal 20GB (of the above different form) in the present embodiment is compared to the exposed portions 20cA of the other two ground contact terminals 20GA (which have the same shape as the second embodiment). Furthermore, it has an extended exposed portion 20 f extending in the circumferential direction along the outer peripheral surface of the terminal block 21. A screw insertion hole 20g is formed in a predetermined part of the extended exposure part 20f (see FIG. 11). In FIG. 11, in order to clarify the illustration of the screw insertion hole 20g, the vicinity of the screw insertion hole 20g is shown as a partial sectional view. When the terminal block 21 is formed by insert molding, the screw insertion hole 20g is substantially coincident with a screw hole 21a formed in the terminal block 21 and screwed into a screw 21b for attaching the terminal block 21 to the mount ring 10. It is formed in the position to do. Other configurations are the same as those in the first embodiment.

  Also in the lens barrel of the present embodiment configured as described above, when the lens barrel is assembled, the outer peripheral surface of the terminal block 21 abuts along the inner peripheral surface of the mount ring 10 and the surfaces contact each other. At this time, in addition to the exposed portion 20cA of the ground contact terminals 20GA and 20GB, each of the extended exposed portions 20f of the ground contact terminal 20GB contacts the inner peripheral surface of the mount ring 10. In this state, the terminal block 21 is fixed to the mount ring 10 using screws 21b as shown in FIG. At this time, the screw 21b comes into contact with the mount ring 10 and the extended exposed portion 20f at the same time. Thereby, the electrical connection state between the ground contact terminals 20GA and 20GB and the mount ring 10 is ensured.

  As described above, according to the third embodiment, the same effects as those of the first and second embodiments can be obtained, and a wider contact area can be ensured.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and applications can of course be implemented without departing from the spirit of the invention. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if several constituent requirements are deleted from all the constituent requirements shown in the above-described embodiment, if the problem to be solved by the invention can be solved and the effect of the invention can be obtained, this constituent requirement is deleted. The configured structure can be extracted as an invention. Furthermore, constituent elements over different embodiments may be appropriately combined.

1 ... Lens barrel,
10 ... Mount ring,
10a ... Screw,
11 ... Zoom ring,
12 …… Focus ring,
13 …… Lens function button,
14 …… Chassis,
15 …… Tripod seat positioning boss,
16 …… Frame,
17 …… Packing material,
20 …… Contact terminal,
20G, 20GA, 20GB ... ground contact terminal,
20a …… Contact point,
20b ...... extension part,
20bA ...... Internal connecting portion, first internal connecting portion,
20c, 20cA, 20cB ... exposed part,
20d …… Internal connection portion, second internal communication portion,
20e: proximal end,
20f …… Extended exposed part,
20g: Screw insertion hole,
21 …… Terminal block,
21a: Screw hole,
21b ... Screw,
21c: Notch,
22 …… Flexible printed circuit board,
23 …… Hard substrate,

Claims (11)

A basic fixing member;
An electronic circuit board mounted with an electronic circuit and a ground pattern disposed inside the basic fixing member and performing control processing or signal processing;
A terminal block having a plurality of contact terminals including a plurality of ground contact terminals connected to the ground pattern of the electronic circuit board;
A metal mounting ring connected to the mounting part of the device;
Comprising
The plurality of ground contact terminals are formed such that at least a part thereof is exposed on the outer peripheral surface of the terminal block,
The lens barrel according to claim 1, wherein an outer peripheral surface of the terminal block is disposed in contact with an inner peripheral surface of the mount ring.   The lens barrel according to claim 1, wherein the terminal block is formed integrally with the plurality of contact terminals by molding.   2. The lens barrel according to claim 1, wherein the plurality of contact terminals are joined to the electronic circuit board by soldering.   The lens barrel according to claim 1, wherein the electric circuit board is a hard board.   2. The lens barrel according to claim 1, wherein the electric circuit board is a hard board connected via a flexible printed board.   The lens barrel according to claim 1, wherein the plurality of ground contact terminals are arranged along the outer surface of the terminal block.   The plurality of ground contact terminals are embedded in the terminal block, a part of the ground contact terminal is exposed on an outer peripheral surface of the terminal block, and an end portion is bonded to the electronic circuit board. The lens barrel according to Item 1. Further comprising a metal screw for fixing the outer peripheral surface of the terminal block in contact with the inner peripheral surface of the mount ring,
The metal screw passes through the screw hole formed in the mount ring, then passes through the screw hole formed in the ground contact terminal, and is screwed into the screw hole formed in the terminal block. The lens barrel according to claim 1. Further comprising a metal screw for fixing the outer peripheral surface of the terminal block in contact with the inner peripheral surface of the mount ring,
2. The lens barrel according to claim 1, wherein at least one of the mount ring and the plurality of ground contact terminals is electrically connected through the metal screw.   The lens barrel according to claim 1, wherein the plurality of contact terminals of the terminal block are arranged in a plane orthogonal to the optical axis.   The lens barrel according to claim 1, wherein the terminal block includes a positioning portion that performs positioning when the terminal block is fixed to the mount ring.

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