JPWO2018056075A1 - Imaging device - Google Patents

Abstract

An imaging apparatus including a camera body having an imaging element and an interchangeable lens detachably attached to the camera body, the imaging apparatus capable of being miniaturized in the radial direction of the interchangeable lens. In an imaging device, a camera body includes a plurality of body side connection terminals for electrically connecting an interchangeable lens and the camera body, and the interchangeable lens includes a plurality of body side connections. A plurality of lens side connection terminals 17 in contact with the respective terminals 7 are provided. The main body side connection terminal 7 and the lens side connection terminal 17 are arranged in a straight line or arc shape in the circumferential direction of the interchangeable lens 3 and are arranged in a straight line or arc shape. The lenses 17 are arranged in two or three rows in the radial direction of the interchangeable lens 3. [Selected figure] Figure 1

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an imaging device provided with an interchangeable lens removably mounted on a camera body.

  BACKGROUND Conventionally, there is known a camera configured of a camera body having an imaging element and an interchangeable lens that is detachable from the camera body (see, for example, Patent Document 1). In the camera described in Patent Document 1, the camera body includes a body side mount portion to which the interchangeable lens is detachably attached. In the vicinity of the body side mount portion, a holding portion for holding 12 body side connection terminals is formed. The twelve body side connection terminals are arranged in a line in a circular arc in the circumferential direction of the interchangeable lens.

  Further, in the camera described in Patent Document 1, the interchangeable lens includes a lens side mount portion attached to the body side mount portion. In the vicinity of the lens side mount portion, a holding portion for holding 12 lens side connection terminals is formed. The twelve lens side connection terminals are arranged in an arc shape in the circumferential direction of the interchangeable lens. In the camera described in Patent Document 1, when the interchangeable lens is attached to the camera body, the 12 body side connection terminals and the 12 lens side connection terminals are electrically and physically connected.

Patent No. 5316684 gazette

  In order to miniaturize the camera described in Patent Document 1 in the radial direction of the interchangeable lens, it is necessary to dispose the twelve body side connection terminals and the lens side connection terminals more inward in the radial direction. However, in the camera described in Patent Document 1, even if the 12 body side connection terminals and the lens side connection terminals are arranged more inward in the radial direction, the image pickup element can not be made smaller as viewed from the optical axis direction of the interchangeable lens. At this time, the corner of the imaging element formed in a rectangular shape overlaps the body side connection terminal and the lens side connection terminal, and the body side connection terminal and the lens side connection terminal can not be disposed. Alternatively, in the camera described in Patent Document 1, when the size of the imaging device increases, it becomes difficult to miniaturize the camera in the radial direction.

  Therefore, an object of the present invention is to provide an imaging device that can be miniaturized in the radial direction of the interchangeable lens in the imaging device provided with a camera body having an imaging element and an interchangeable lens detachably attached to the camera body. It is to do.

  In order to solve the above-mentioned subject, the imaging device of the present invention is provided with the camera body which has an image sensor, and the interchangeable lens removably attached to a camera body, and is opposed to the camera body in the optical axis direction of the interchangeable lens Assuming that the side on which the interchangeable lens is disposed is the subject side and the opposite side to the subject side is the non-subject side, the camera body is provided with a plurality of body side connection terminals for electrically connecting the interchangeable lens and the camera body. The interchangeable lens includes a plurality of lens side connection terminals contacting each of the plurality of main body side connection terminals, and the subject side ends of the plurality of body side connection terminals are disposed on the subject side surface of the camera body. The anti-subject side end of the lens side connection terminal is disposed on the anti-subject side surface of the interchangeable lens, and the main body side connection terminal and the lens side connection terminal are arrayed in a linear or arc shape in the circumferential direction of the interchangeable lens Together with the main body-side connection terminal and the lens-side connection terminals are arranged in a straight line or arc shape, characterized in that it is arranged in two rows or three rows in the radial direction of the interchangeable lens.

  In the imaging device of the present invention, the main body side connection terminals and the lens side connection terminals arranged linearly or in the circumferential direction of the interchangeable lens are arranged in two or three rows in the radial direction of the interchangeable lens. Therefore, in the present invention, the main body side connection terminals and the lens side connection terminals are arranged in the circumferential direction of the interchangeable lens as compared with the case where the linear direction or the arc shape is arranged in only one row in the circumferential direction of the interchangeable lens. It is possible to reduce the number of the main body side connection terminals and the lens side connection terminals, and to shorten the arrangement length of the main body side connection terminals and the lens side connection terminals in the circumferential direction of the interchangeable lens.

  Therefore, according to the present invention, even when the size of the imaging device is relatively large, when viewed from the optical axis direction of the interchangeable lens, the corner of the imaging device formed in a rectangular shape, the main body side connection terminal, and the lens side It is possible to dispose the plurality of main body side connection terminals and the plurality of lens side connection terminals more inward in the radial direction of the interchangeable lens so that the connection terminals do not overlap. As a result, according to the present invention, it is possible to miniaturize the imaging device in the radial direction of the interchangeable lens even if the size of the imaging device is relatively large.

  In the present invention, it is preferable that the main body side connection terminals and the lens side connection terminals arranged in a linear shape or an arc shape be arranged in two rows in the radial direction. With this configuration, the imaging device can be configured in the radial direction of the interchangeable lens as compared to the case where the main body side connection terminals and the lens side connection terminals arranged in a linear shape or an arc shape are arranged in three rows in the radial direction. It becomes easier to miniaturize.

  In the present invention, it is preferable that the number of one row of the main body side connection terminals and the lens side connection terminals arranged in a straight line shape or an arc shape is decreased toward the inner side in the radial direction. With this configuration, the plurality of body-side connection terminals and the plurality of lens-side connection terminals can be more easily disposed on the inner side in the radial direction of the interchangeable lens.

  In the present invention, the main body side connection terminals and the lens side connection terminals are preferably arranged in an arc shape in the circumferential direction. With this configuration, the imaging device can be more easily miniaturized in the radial direction of the interchangeable lens as compared to the case where the main body side connection terminals and the lens side connection terminals are linearly arranged in the circumferential direction. Also, with this configuration, the main body side connection terminals are held when the interchangeable lens is attached to and detached from the camera body, as compared to the case where the main body side connection terminals and the lens side connection terminals are linearly arranged in the circumferential direction. Scratches produced on the holding portion of the lens unit or the lens side connection terminal become less noticeable.

  In the present invention, the shape of the imaging device when viewed from the optical axis direction is a rectangular shape, which is a direction perpendicular to the optical axis direction and parallel to the short side of the imaging device formed in a rectangular shape. The plurality of main body side connection terminals and the plurality of lens side connection terminals are elongated in the first direction of the imaging element formed in a rectangular shape when viewed from the optical axis direction, assuming that one side of the first side is the first direction side. It is preferable to arrange | position at the 1st direction side rather than the edge | side. According to this configuration, the plurality of main body side connection terminals and the plurality of lens side connection terminals are disposed outside the short side of one side of the imaging element formed in a rectangular shape when viewed from the optical axis direction. As compared with the case where there is a lens, it is easier to miniaturize the imaging device in the radial direction of the interchangeable lens.

  In the present invention, assuming that a predetermined direction orthogonal to the optical axis direction is the second direction, the imaging device is disposed on one side of the plurality of main body side connection terminals in the second direction when viewed from the optical axis direction. Preferably, the object-side surface of the imaging device is disposed closer to the object than the object-side end of the main body side connection terminal. With this configuration, it is possible to miniaturize the imaging device in the optical axis direction.

  In the present invention, the shape of the main body side connection terminal when viewed from the optical axis direction is circular or rectangular, and the shape of the main body side connection terminal when viewed from the optical axis direction is circular When viewed from the optical axis direction, the circumferential intervals of the adjacent main body connection terminals in the circumferential direction are smaller than the diameter of the main body connection terminals, and when viewed from the optical axis direction. When the shape of the main body side connection terminal is rectangular, when viewed from the optical axis direction, the circumferential interval of the main body side connection terminals adjacent in the circumferential direction is the diagonal of the diagonal of the main body side connection terminal Preferably, it is smaller than the length.

  Further, in the present invention, the shape of the lens side connection terminal when viewed from the optical axis direction is circular or rectangular, and the shape of the lens side connection terminal when viewed from the optical axis direction is circular In this case, when viewed from the optical axis direction, the circumferential interval between adjacent lens side connection terminals in the circumferential direction is smaller than the diameter of the lens side connection terminal, and viewed from the optical axis direction. When the shape of the lens side connection terminal at the time of bending is a rectangular shape, when viewed from the optical axis direction, the circumferential interval of the lens side connection terminals adjacent in the circumferential direction is equal to that of the lens side connection terminal. Preferably, it is smaller than the length of the diagonal.

  With this configuration, the arrangement length of the main body side connection terminal and the lens side connection terminal in the circumferential direction of the interchangeable lens can be further shortened. Therefore, when viewed from the optical axis direction of the interchangeable lens, the plurality of main body side connection terminals and the body side connection terminals and the lens side connection terminals do not overlap. It becomes easier to arrange the plurality of lens side connection terminals inside the interchangeable lens in the radial direction.

  In the present invention, the main body side connection terminals are arranged in an arc shape in the circumferential direction, and the main body side connection terminals arranged in an arc shape are arranged in two rows in the radial direction and viewed from the optical axis direction When the shape of the main body side connection terminal is circular or rectangular and the shape of the main body side connection terminal when viewed from the optical axis direction is circular, when viewed from the optical axis direction And a plurality of first virtual arcs in contact with the radially outer ends of the plurality of main body side connection terminals arranged in an arc in the radial direction, and a plurality of main bodies connection arranged in an arc in the radially outer direction The radial distance from the second virtual arc in contact with the radial inner end of the terminal is shorter than the diameter of the main body connection terminal, and the shape of the main body connection terminal when viewed from the optical axis direction is In the case of a rectangular shape, when viewed from the optical axis direction, The two corner portions of the plurality of main body side connection terminals arranged in an arc and arranged on the outer side in the radial direction are arranged on the third virtual arc having the center of curvature of the optical axis of the interchangeable lens as the radial direction The two corners of the plurality of main body side connection terminals arranged in an arc at the outside of the lens, arranged inside in the radial direction, are arranged on a fourth virtual arc whose center of curvature is the optical axis of the interchangeable lens. It is preferable that the radial distance between the third virtual arc and the fourth virtual arc be shorter than the length of the diagonal of the main body side connection terminal. With this configuration, the imaging device can be more easily miniaturized in the radial direction of the interchangeable lens.

  Further, in the present invention, the lens side connection terminals are arranged in an arc shape in the circumferential direction, and the lens side connection terminals arranged in an arc shape are arranged in two rows in the radial direction and viewed from the optical axis direction The shape of the lens side connection terminal at this time is circular or rectangular, and when the shape of the lens side connection terminal when viewed from the optical axis direction is circular, it is viewed from the optical axis direction And a fifth virtual arc in contact with the radially outer ends of the plurality of lens side connection terminals arranged in an arc at the inner side in the radial direction, and a plurality of lenses arranged in the arc at the outer side in the radial direction The radial distance from the sixth virtual arc in contact with the radial inner end of the side connection terminal is shorter than the diameter of the lens side connection terminal, and when viewed from the optical axis direction, When the shape is rectangular, it is viewed from the optical axis direction At the same time, the two corner portions of the plurality of lens side connection terminals arranged in an arc shape on the inner side in the radial direction, which are arranged on the outer side in the radial direction, have a seventh Two corner portions of the plurality of lens side connection terminals disposed on the virtual arc and arranged in an arc on the outside in the radial direction, the two corners disposed on the inside in the radial direction have the optical axis of the interchangeable lens as the center of curvature The distance between the seventh virtual arc and the eighth virtual arc in the radial direction is preferably shorter than the length of the diagonal of the lens side connection terminal. With this configuration, the imaging device can be more easily miniaturized in the radial direction of the interchangeable lens.

  As described above, according to the present invention, in an imaging apparatus including a camera body having an imaging element and an interchangeable lens detachably attached to the camera body, the imaging apparatus can be miniaturized in the radial direction of the interchangeable lens. Become.

1 is an exploded perspective sectional view of an imaging device according to an embodiment of the present invention. It is a perspective view of the camera main body shown in FIG. It is a perspective view of the interchangeable lens shown in FIG. It is a figure for demonstrating arrangement | positioning of the main body side connection terminal shown in FIG. It is a figure for demonstrating arrangement | positioning of the lens side connection terminal shown in FIG. It is a figure for demonstrating the shape and arrangement | positioning of the main body side connection terminal concerning other embodiment of this invention. It is a figure for demonstrating the shape and arrangement | positioning of the lens side connection terminal concerning other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Whole configuration of imaging device)
FIG. 1 is an exploded perspective sectional view of an imaging device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view of the camera body 2 shown in FIG. FIG. 3 is a perspective view of the interchangeable lens 3 shown in FIG.

  The imaging device 1 of the present embodiment includes a camera body 2 and an interchangeable lens 3 detachably attached to the camera body 2. In this embodiment, the interchangeable lens 3 is detachably attached to the camera body 2 by a bayonet-type connection mechanism. The interchangeable lens 3 is formed in a substantially cylindrical shape as a whole, and the axial direction of the interchangeable lens 3 formed in a substantially cylindrical shape matches the direction (optical axis direction) of the optical axis L of the interchangeable lens 3 ing.

  Assuming that one side of the interchangeable lens 3 in the optical axis direction is the subject side, and the opposite side of the subject (the other side in the optical axis direction) is the non-subject side (imaging side) The camera body 2 is disposed on the side opposite to the subject with respect to the interchangeable lens 3. In the following description, the subject side (the Z1 direction side in FIG. 1 etc.) is the “front” side, and the non-subject side (the Z2 direction side in FIG. 1 etc.) is the “rear (back)” side. In the following description, the radial direction of the interchangeable lens 3 (that is, the direction orthogonal to the optical axis L) is referred to as “radial direction”, and the circumferential direction of the interchangeable lens 3 (the circumferential direction, ie, the axis of the interchangeable lens 3 is The circumferential direction) is defined as the "circumferential direction".

  The camera body 2 includes a plurality of body side connections for electrically connecting the imaging device 5 such as a C-MOS image sensor, the circuit board 6 on which the imaging device 5 is mounted, the interchangeable lens 3 and the camera body 2 A terminal 7 (hereinafter, referred to as "connection terminal 7") and a frame 8 for holding these members are provided. The circuit board 6 is a rigid board formed in a flat plate shape, and is disposed such that the thickness direction of the circuit board 6 matches the front-rear direction. The imaging device 5 is formed in a rectangular flat plate shape, and is disposed such that the thickness direction of the imaging device 5 matches the front-rear direction. That is, the shape of the imaging device 5 when viewed from the front-rear direction (optical axis direction) is a rectangular shape. The imaging device 5 is mounted on the front surface of the circuit board 6.

  In the following description, a direction (Y direction in FIG. 1 and the like) parallel to the short side of the imaging element 5 formed in a rectangular shape, which is a direction orthogonal to the front-rear direction, is the vertical direction. Further, in the vertical direction, the Y1 direction side in FIG. 1 and the like is the “upper” side, and the Y2 direction side in FIG. 1 and the other side opposite thereto is the “down” side. The lower side (Y2 direction side) of the present embodiment is a first direction side which is a direction orthogonal to the optical axis direction and one side of a direction parallel to the short side of the imaging device 5. Further, the vertical direction (Y direction) of this embodiment is a predetermined second direction orthogonal to the optical axis direction.

  The frame 8 is formed in a flat, substantially bottomed cylindrical shape with a short axial length as a whole, and is arranged such that the axial direction of the frame 8 coincides with the front-rear direction. The bottom 8a of the frame 8 formed in a substantially bottomed cylindrical shape divides the cylindrical portion 8b of the frame 8 into a front space and a rear space. The bottom portion 8a includes a substrate holding member 9 constituting a central portion of the bottom portion 8a, a bottom surface member 10 disposed on the outer peripheral side of the substrate holding member 9, and a terminal holding member 11 for holding a plurality of connection terminals 7 There is. The bottom surface member 10 is formed with an opening 10 a in which the substrate holding member 9 is disposed inside.

  The substrate holding member 9 includes a flat rectangular tubular portion 9a and a front surface portion 9b formed in a rectangular frame shape and connected to the front end of the tubular portion 9a. The outer peripheral end of the front surface portion 9b is connected to the front end of the cylindrical portion 9a. The circuit board 6 is fixed to the board holding member 9 in a state where the front surface of the circuit board 6 is in contact with the rear end surface of the cylindrical portion 9a. The imaging device 5 is disposed on the inner peripheral side of the cylindrical portion 9a, and is disposed on the rear side of the front surface portion 9b. In addition, a filter 13 that covers the imaging surface of the imaging device 5 is fixed to the front surface 9 b. The filter 13 is, for example, a low pass filter or an IR cut filter. The imaging surface of the imaging element 5 is exposed through the filter 13 from an opening formed in the central portion of the front surface 9 b. A light beam transmitted through the interchangeable lens 3 can be incident on the imaging surface of the imaging device 5.

  The terminal holding member 11 is formed with a plurality of through holes in which the connection terminals 7 are disposed. The plurality of through holes penetrate the terminal holding member 11 in the front-rear direction. The terminal holding member 11 is disposed below the substrate holding member 9. The bottom surface member 10 is formed with a through hole in which the terminal holding member 11 is disposed. The through hole penetrates the bottom surface member 10 in the front-rear direction. The terminal holding member 11 is fixed to the bottom surface member 10 in a state of being inserted into the through hole.

  The connection terminal 7 is formed of a conductive material having conductivity, and is formed in a substantially cylindrical shape. The plurality of connection terminals 7 are held by the terminal holding member 11 such that the axial direction of the connection terminals 7 formed in a substantially cylindrical shape matches the front-rear direction, and when viewed from the front-rear direction (optical axis direction) The shape of the connection terminal 7 is circular. Further, the plurality of connection terminals 7 are inserted and held in the through holes of the terminal holding member 11 so as to be able to move in the front-rear direction. The connection terminal 7 is biased to the front side by a spring (not shown). The front ends (subject side ends) of the plurality of connection terminals 7 are disposed on the front surface of the bottom 8 a of the frame 8. That is, the front ends of the plurality of connection terminals 7 are disposed on the front surface of the bottom portion 8 a that is the front surface (surface on the subject side) of the camera body 2 facing the interchangeable lens 3.

  Further, the cylindrical portion 8b of the frame 8 is provided with an annular ring member 12 in which the bayonet claw 12a is formed. The ring member 12 constitutes a front end portion of the cylindrical portion 8b. The bayonet claw 12a protrudes inward in the radial direction. In addition, the bayonet claws 12a are formed at three locations with a predetermined interval in the circumferential direction. The circumferential width of at least one bayonet claw 12a of the three bayonet claws 12a is different from the circumferential width of the other bayonet claws 12a.

  The interchangeable lens 3 includes a plurality of optical lenses 16, a plurality of lens side connection terminals 17 (hereinafter referred to as “connection terminals 17”) for electrically connecting the interchangeable lens 3 and the camera body 2, and a plurality of A lens barrel 18 for holding the optical lens 16 and the plurality of connection terminals 17 is provided. In FIG. 1, only one optical lens 16 of the plurality of optical lenses 16 is illustrated.

  The interchangeable lens 3 further includes a focus lens 19 disposed behind the plurality of optical lenses 16 and a focus adjustment mechanism (not shown) for moving the focus lens 19 in the front-rear direction (optical axis direction). . The focus adjustment mechanism includes a motor, a lead screw, a nut member, and the like, and is disposed inside the lens barrel 18. Further, the focus adjustment mechanism is disposed on the upper side of the focus lens 19. A shutter and a shutter driving mechanism (not shown) are also disposed inside the lens barrel 18.

  The lens barrel 18 includes an annular ring member 20 in which the bayonet claw 20 a is formed, a cover member 21 disposed on the inner peripheral side of the ring member 20, and a terminal holding member 22 for holding a plurality of connection terminals 17. Is equipped. The ring member 20, the cover member 21 and the terminal holding member 22 constitute a rear end side portion of the lens barrel 18. The bayonet claw 20a protrudes outward in the radial direction. Further, the bayonet claws 20a are formed at three locations in a state in which a predetermined interval is opened in the circumferential direction. The circumferential width of at least one bayonet claw 20a among the three bayonet claws 20a is different from the circumferential width of the other bayonet claws 20a. In this embodiment, when the bayonet claw 12a and the bayonet claw 20a are engaged, the interchangeable lens 3 is attached to the camera body 2.

  The terminal holding member 22 is formed in a circular arc shape and a flat plate shape, and is arranged such that the thickness direction of the terminal holding member 22 matches the front-rear direction. The terminal holding member 22 is formed with a plurality of through holes in which the connection terminals 17 are disposed. The plurality of through holes penetrate the terminal holding member 22 in the front-rear direction. The connection terminal 17 is formed of a conductive material having conductivity, and is formed in a substantially cylindrical shape. The plurality of connection terminals 17 are held by the terminal holding member 22 so that the axial direction and the front-rear direction of the connection terminals 17 formed in a substantially cylindrical shape coincide with each other, and viewed from the front-rear direction (optical axis direction) The shape of the connection terminal 17 is circular. The plurality of connection terminals 17 are inserted into and fixed to the through holes of the terminal holding member 22. The rear ends (anti-subject side ends) of the plurality of connection terminals 17 are disposed on the rear surface of the rear end side portion of the lens barrel 18. That is, the rear ends of the plurality of connection terminals 17 are disposed on the rear surface of the rear end portion of the lens barrel 18 which is the rear surface (surface on the non-subject side) of the interchangeable lens 3 facing the camera body 2. The subject-side surface of the camera body 2 and the anti-subject surface of the interchangeable lens 3 are surfaces facing each other when the interchangeable lens 3 is attached to the camera body 2.

  The cover member 21 is formed in a substantially annular shape and a flat plate shape, and is disposed such that the thickness direction of the cover member 21 matches the front-rear direction. The outer peripheral surface of the cover member 21 is fixed to the inner peripheral surface of the ring member 20. A rectangular through hole 21 a is formed at the center of the cover member 21. The through hole 21a penetrates the cover member 21 in the front-rear direction. The through hole 21 a transmits a light beam that passes through the focus lens 19 and is incident on the imaging device 5.

  The cover member 21 is formed with a notch in which the terminal holding member 22 is disposed. The notch portion is formed in an arc shape from the outer peripheral end of the cover member 21 inward in the radial direction. Moreover, this notch is formed in the lower end side of the cover member 21, and the terminal holding member 22 is arrange | positioned below the through-hole 21a. The terminal holding member 22 is fixed to the cover member 21 in a state of being disposed in the cutout portion. Further, the radially outer side surface of the terminal holding member 22 is fixed to the inner peripheral surface of the ring member 20.

  A recessed portion 21 b that is recessed toward the front side is formed on one end side of the terminal holding member 22 in the circumferential direction on the rear surface of the cover member 21. The bottom surface of the recess 21 b is a flat surface orthogonal to the front-rear direction. The rear surface of the terminal holding member 22 is disposed rearward of the bottom surface of the recess 21 b (that is, the rear surface of the portion of the cover member 21 in which the recess 21 b is formed). Two inclined surfaces 22a and 22b are formed on one end side (recessed portion 21b side) of the terminal holding member 22 in the circumferential direction. The inclined surfaces 22a and 22b are inclined toward the rear side toward the center of the terminal holding member 22 in the circumferential direction. In the radial direction, the inclined surface 22a is formed at a position along the column direction in which connection terminals 17A described later are arranged, and the inclined surface 22b is formed at a position along the column direction in which connection terminals 17B described later are arranged It is done.

  As shown in FIG. 3, the front end (outer end in the circumferential direction) of the inclined surface 22 b is adjacent to one end of the recess 21 b in the circumferential direction. The inclined surface 22a is disposed closer to the center of the terminal holding member 22 in the circumferential direction than the inclined surface 22b. Between the front end (outer end in the circumferential direction) of the inclined surface 22a of the terminal holding member 22 and one end of the recess 21b in the circumferential direction, a plane 22c orthogonal to the front-rear direction is formed. The flat surface 22c is disposed on substantially the same plane as the bottom surface of the recess 21b.

  In the present embodiment, the recess 21 b prevents the contact between the rear surface of the cover member 21 and the connection terminal 7 when the interchangeable lens 3 is attached to or detached from the camera body 2 by rotating the interchangeable lens 3 with respect to the camera body 2. Plays a function. When the interchangeable lens 3 is attached to and detached from the camera body 2 by the action of the recess 21b, the rear surface of the cover member 21 is not scratched. When the interchangeable lens 3 is attached to the camera body 2 by rotating the interchangeable lens 3 with respect to the camera body 2 with the inclined surfaces 22a and 22b, the front end of the connection terminal 7 and the rear end of the connection terminal 17 are recessed. It has a function of moving the connection terminal 7 to the rear side so as to contact smoothly without being caught by the step between the holding member 21 b and the holding member 22. In addition, the stopper member 23 for positioning which determines the position of the circumferential direction of the interchangeable lens 3 with respect to the camera main body 2 is attached to the ring member 20 (refer FIG. 3).

(Placement of connection terminal)
FIG. 4 is a view for explaining the arrangement of the connection terminal 7 shown in FIG. FIG. 5 is a view for explaining the arrangement of the connection terminal 17 shown in FIG.

  As described above, the camera body 2 includes the plurality of connection terminals 7, and the interchangeable lens 3 includes the plurality of connection terminals 17. In the present embodiment, the camera body 2 includes ten connection terminals 7, and the interchangeable lens 3 includes ten connection terminals 17 in contact with the ten connection terminals 7. The number of connection terminals 7 provided in the camera body 2 may be other than ten. In this case, the interchangeable lens 3 includes the same number of connection terminals 17 as the number of connection terminals 7 provided in the camera body 2.

  As shown in FIGS. 2 and 4, the ten connection terminals 7 are arranged in an arc shape in the circumferential direction, and the connection terminals 7 arranged in an arc shape are arranged in two rows in the radial direction. . Similarly, ten connection terminals 17 in contact with each of ten connection terminals 7 are arranged in an arc shape in the circumferential direction, and connection terminals 17 arranged in an arc shape are arranged in two rows in the radial direction. (See FIGS. 3 and 5).

  In this embodiment, four connection terminals 7 are arranged in a circular arc in the circumferential direction at regular intervals, and the remaining six connection terminals 7 at regular intervals on the radial outside of the four connection terminals 7. Are arranged in a circular arc in the circumferential direction. Further, four connection terminals 17 are arranged in a circular arc shape at regular intervals in a circumferential direction so as to correspond to the arrangement position of connection terminals 7, and the remaining four connection terminals 17 are provided outside in the radial direction. Six connection terminals 17 are arranged in a circular arc in the circumferential direction at regular intervals. That is, the number of connection terminals 7 and 17 arranged in an arc at the inner side in the radial direction is smaller than the number of connection terminals 7 and 17 arranged in an arc at the outer side in the radial direction. That is, the number of connection terminals 7 and 17 arranged in an arc shape in one row decreases as it goes inward in the radial direction.

  Each of four connection terminals 7 arranged in an arc at the inner side in the radial direction is a connection terminal 7A, and each of six connection terminals 7 arranged in an arc at the outer side in the radial direction is a connection terminal 7B. As shown in FIG. 4, when viewed from the front and rear direction, the centers of the four connection terminals 7A are arranged on a virtual arc VC1 whose center of curvature is the optical axis L of the interchangeable lens 3, and six connections The center of the terminal 7B is arranged on a virtual arc VC2 whose center of curvature is the optical axis L. That is, when viewed from the front-rear direction, the four connection terminals 7A and the six connection terminals 7B are concentrically arranged.

  Similarly, the four connection terminals 17 arranged in an arc at the inner side in the radial direction are referred to as connection terminals 17A, and the six connection terminals 17 arranged in an arc at the outer side in the radial direction are connected terminals Assuming that it is 17B, as shown in FIG. 5, the centers of the four connection terminals 17A are arranged on the virtual arc VC1 when viewed from the front-rear direction, and the centers of the six connection terminals 17B are the virtual arc VC2. Arranged above. That is, when viewed in the front-rear direction, the four connection terminals 17A and the six connection terminals 17B are concentrically arranged.

  Further, four connection terminals 7B among the six connection terminals 7B are disposed below the four connection terminals 7A. In addition, one connection terminal 7B of the remaining two connection terminals 7B is disposed on one side in the circumferential direction than the four connection terminals 7A, and the remaining one connection terminal 7B is four. It is disposed on the other side in the circumferential direction than the connection terminal 7A. Similarly, four connection terminals 17B of the six connection terminals 17B are disposed below the four connection terminals 17A, and one connection terminal 17B of the remaining two connection terminals 17B. Are disposed on one side in the circumferential direction of the four connection terminals 17A, and the remaining one connection terminal 17B is disposed on the other side of the four connection terminals 17A in the circumferential direction.

  The number of connection terminals 7A arranged in an arc at the inner side in the radial direction may be other than four, and the number of connection terminals 7B arranged in an arc at the outer side in the radial direction is 6 It may be other than. Similarly, the number of connection terminals 17A arranged in an arc at the inner side in the radial direction may be other than four, and the number of connection terminals 17B arranged in an arc at the outer side in the radial direction is 6 It may be other than one. For example, when the number of connection terminals 7 and 17 is 12, one connection terminal 7B may be disposed on each side of the illustrated six connection terminals 7B, and eight connection terminals 7B may be provided. it can. Further, the connection terminals 17 can be eight in number by arranging the connection terminals 17B one by one on both sides of the illustrated six connection terminals 17B in correspondence with the connection terminals 7.

  When viewed from the front-rear direction, the circumferential intervals of the connection terminals 7 adjacent in the circumferential direction are smaller than the diameter of the connection terminals 7. Further, as shown in FIG. 4, when viewed from the front and rear direction, a virtual arc VC3 in contact with the outer end in the radial direction of the four connection terminals 7A arranged in an arc shape in the radial direction and the radial direction The radial distance D1 of the six connection terminals 7B arranged in an arc shape outside of the virtual arc VC4 in contact with the radially inner end is shorter than the diameter of the connection terminal 7. The virtual arc VC3 of this embodiment is a first virtual arc, and the virtual arc VC4 is a second virtual arc.

  Similarly, when viewed from the front-rear direction, the interval between the circumferentially adjacent connection terminals 17 in the circumferential direction is smaller than the diameter of the connection terminals 17. Further, as shown in FIG. 5, when viewed from the front and rear direction, a virtual arc VC5 in contact with the outer end in the radial direction of the four connection terminals 17A arranged in the arc shape in the radial direction and the radial direction The radial distance D2 of the six connection terminals 17B arranged in an arc shape outside the inner circle and the virtual arc VC6 in contact with the inner end in the radial direction is shorter than the diameter of the connection terminal 17. The virtual arc VC5 of this embodiment is a fifth virtual arc, and the virtual arc VC6 is a sixth virtual arc.

  As described above, the terminal holding member 11 for holding the ten connection terminals 7 is disposed below the substrate holding member 9, and the imaging device 1 with the interchangeable lens 3 attached to the camera body 2 is moved back and forth. When viewed from the direction, it is disposed below the imaging device 5. That is, when viewed in the front-rear direction, the ten connection terminals 7 and the ten connection terminals 17 in contact with the ten connection terminals 7 are disposed lower than the imaging element 5. Further, as described above, since the direction parallel to the short side of the imaging device 5 is the vertical direction, the ten connection terminals 7 and the ten connection terminals 17 are imaged when viewed from the front-rear direction. It is disposed below the lower long side of the element 5. Further, the front surface of the imaging device 5 is disposed on the front side of the rear end of the connection terminal 7 (see FIG. 1).

(Main effects of this form)
As described above, the imaging device 1 of the present embodiment includes the camera body 2 having the imaging element 5 and the interchangeable lens 3 detachably attached to the camera body 2. In addition, the camera body 2 includes ten connection terminals 7 for electrically connecting the interchangeable lens 3 and the camera body 2, and ten interchangeable lenses 3 are in contact with each of the ten connection terminals 7. The connection terminal 17 is provided. The connection terminals 7 and 17 are arranged in an arc in the circumferential direction of the interchangeable lens 3 (the circumferential direction of the optical axis L), and the connection terminals 7 and 17 arranged in an arc are the diameter of the interchangeable lens 3 They are arranged in two rows in the direction (direction orthogonal to the optical axis L).

  As described above, in this embodiment, since the connection terminals 7 and 17 arranged in an arc shape in the circumferential direction are arranged in two rows in the radial direction, ten connection terminals 7 and 17 are arc-shaped in the circumferential direction 1 By reducing the number of connection terminals 7 and 17 arranged in the circumferential direction as compared with the case where they are arranged only in columns, the arrangement length of the connection terminals 7 and 17 in the circumferential direction can be shortened. Become. Therefore, in the present embodiment, even when the size of the imaging device 5 is relatively large, the corners of the imaging device 5 formed in a rectangular shape and the connection terminals 7 and 17 when viewed from the front-rear direction (optical axis direction) It is possible to arrange the ten connection terminals 7, 17 more radially inward so that they do not overlap. As a result, in this embodiment, even if the size of the imaging device 5 is relatively large, the imaging device 1 can be miniaturized in the radial direction. Further, the connection terminal 7 and the connection terminal 17 can be disposed without reducing the size of the imaging device 5. That is, the imaging device 1 can be miniaturized in the radial direction of the interchangeable lens 3.

  In this embodiment, the connection terminals 17 are arranged in two rows in the radial direction, but if the connection terminals 17 are arranged in one row in the radial direction, the circumferential length of the recess 21b is Needs to be increased in accordance with the length of the row of connection terminals 17. On the other hand, if the connection terminals 17 are arranged in two rows in the radial direction as in the present embodiment, the circumferential length of the recess 21 b can be shortened. Further, by shortening the circumferential length of the recess 21b, for example, the degree of freedom of the structure for attaching the cover member 21 to the lens barrel 3 can be increased.

  As in the present embodiment, it is preferable that the number of connection terminals 7 and 17 arranged in an arc shape in one row is smaller toward the inner side in the radial direction. In this case, the ten connection terminals 7 and 17 can be easily disposed on the inner side in the radial direction, so that the imaging device 1 can be further miniaturized in the radial direction.

  As in the present embodiment, the shape of the imaging device 5 when viewed from the front and back direction is a rectangular shape, and when viewed from the front and back direction, the ten connection terminals 7 and the ten connection terminals 17 It is preferable to be disposed below the lower long side of the element 5. According to this configuration, ten connection terminals 7 and ten connection terminals 17 on the outer side (the outer side in the left-right direction) of the short side of one side of the imaging element 5 formed in a rectangular shape when viewed from the front-rear direction As compared with the case where is disposed, it is possible to miniaturize the imaging device 1 in the radial direction. Further, in this case, it is possible to prevent interference between the focus adjustment mechanism disposed on the upper side of the focus lens 19 inside the lens barrel 18 and the connection terminal 17. When the focusing mechanism is disposed below the focusing lens 19, the connection terminals 7 and 17 may be disposed above the upper long side of the imaging device 5. In this case, the upper side (Y1 direction side) is the first direction side.

  As in the present embodiment, the shape of the connection terminals 7 and 17 when viewed from the front and back direction is circular, and the distance between the connection terminals 7 adjacent in the circumferential direction in the circumferential direction when viewed from the front and back direction Is preferably smaller than the diameter of the connection terminal 7, and the circumferential interval of the connection terminals 17 adjacent in the circumferential direction is preferably smaller than the diameter of the connection terminal 17. This makes it possible to further shorten the arrangement length of the connection terminals 7 and 17 in the circumferential direction. Therefore, when viewed from the front-rear direction, the ten connection terminals 7 and 17 are disposed more inward in the radial direction so that the corner of the imaging element 5 formed in a rectangular shape and the connection terminals 7 and 17 do not overlap. It becomes easy to do. Therefore, the imaging device 1 can be further miniaturized in the radial direction. In addition, it is preferable that the space | interval of the circumferential direction of the connection terminal 7 adjacent in a circumferential direction is 1/4 or more of the diameter of the connection terminal 7. FIG. If the interval in the circumferential direction of the connection terminals 7 adjacent in the circumferential direction is less than 1⁄4 of the diameter of the connection terminals 7, the adjacent connection terminals 7 are likely to be shorted by dust or the like, which is not preferable. Similarly, it is preferable that the circumferential interval of the connection terminals 17 adjacent in the circumferential direction be 1/4 or more of the diameter of the connection terminals 17.

  As in the present embodiment, the shape of the connection terminal 7 when viewed from the front-rear direction is circular, and when viewed from the front-rear direction, the four connections arranged in an arc at the inner side in the radial direction A virtual arc VC3 in contact with the outer end of the terminal 7A in the radial direction, and a virtual arc VC4 in contact with the inner end of the six connection terminals 7B arranged in an arc in the radial direction. The distance D1 is preferably shorter than the diameter of the connection terminal 7. Further, the shape of the connection terminal 17 when viewed from the front-rear direction is circular, and when viewed from the front-rear direction, four connection terminals 17A arranged in an arc at the inner side of the radial direction The radial distance D2 between the virtual arc VC5 in contact with the radially outer end and the virtual arc VC6 in contact with the radially inner end of the six connection terminals 17B arranged in an arc at the radially outer side is It is preferable that the diameter is shorter than the diameter of the connection terminal 17. This makes it easier to miniaturize the imaging device 1 in the radial direction. The distance D1 is preferably equal to or greater than 1/4 of the diameter of the connection terminal 7. If the distance D1 is less than 1⁄4 of the diameter of the connection terminal 7, the connection terminals 7 adjacent in the radial direction are likely to be short-circuited by dust or the like, which is not preferable. Similarly, the distance D2 is also preferably 1/4 or more of the diameter of the connection terminal 17.

  As viewed in the front-rear direction as in this embodiment, the imaging device 5 is disposed above the ten connection terminals 7 (one side in a predetermined second direction), and the front surface of the imaging device 5 is Preferably, the connection terminal 7 is disposed on the front side of the rear end of the connection terminal 7. In this way, it is possible to miniaturize the imaging device 1 in the front-rear direction (optical axis direction). That is, since the front surface 9b of the substrate holding member 9 can be disposed inside the opening 10a of the bottom surface member 10, the imaging device 1 can be miniaturized in the front-rear direction. Further, since the front surface portion 9b is disposed inside the opening 10a, the bottom surface member is located between the front surface portion 9b and the opening 10a as compared to the case where the front surface portion 9b is disposed behind the opening 10a. It becomes possible to make dust difficult to enter behind 10.

(Modification of connection terminal)
FIG. 6 is a diagram for explaining the shape and arrangement of the connection terminal 7 according to another embodiment of the present invention. FIG. 7 is a view for explaining the shape and arrangement of the connection terminal 17 according to another embodiment of the present invention.

  In the embodiment described above, the shape of the connection terminals 7 and 17 when viewed from the front and back direction is circular, but the shape of the connection terminals 7 and 17 when viewed from the front and back direction is rectangular good. For example, as shown in FIG. 6 and FIG. 7, the shape of the connection terminals 7 and 17 when viewed from the front and back direction may be square.

  When the shape of the connection terminal 7 when viewed from the front-rear direction is rectangular, the circumferential interval of the connection terminals 7 adjacent in the circumferential direction is the distance of the connection terminals 7 when viewed from the front-rear direction. Preferably, it is smaller than the length of the diagonal. In addition, when the shape of the connection terminal 17 when viewed from the front-rear direction is a rectangular shape, the circumferential interval of the connection terminals 17 adjacent in the circumferential direction is smaller than the diagonal length of the connection terminal 17 It is preferable that This configuration makes it possible to further shorten the arrangement length of the connection terminals 7 and 17 in the circumferential direction, so that the corners of the imaging element 5 formed in a rectangular shape when viewed from the front and rear direction The connection terminals 7 and 17 can be easily disposed on the inner side in the radial direction so that the connection terminals 7 and 17 do not overlap. Therefore, the imaging device 1 can be further miniaturized in the radial direction.

  In addition, when the shape of the connection terminal 7 when viewed from the front and rear direction is rectangular, as shown in FIG. 6, the connection terminals 7 are arranged in an arc at the inside in the radial direction when viewed from the front and rear direction. The two corners of the four connection terminals 7A disposed radially outward are disposed on a virtual arc VC7 whose center of curvature is the optical axis L, and are arranged in an arc at the radially outer side. The two corner portions of the six connection terminals 7B disposed inward in the radial direction are disposed on a virtual arc VC8 whose center of curvature is the optical axis L, and the virtual arc VC7 and the virtual arc VC8 It is preferable that the radial distance D3 of the above is shorter than the diagonal length of the connection terminal 7. Such a configuration facilitates downsizing of the imaging device 1 in the radial direction. The virtual arc VC7 in this case is a third virtual arc, and the virtual arc VC8 is a fourth virtual arc.

  Further, when the shape of the connection terminal 17 when viewed from the front-rear direction is rectangular, as shown in FIG. 7, the four connection terminals 17A arranged in an arc shape on the inner side in the radial direction The two corner portions disposed outside in the radial direction are disposed on a virtual arc VC9 whose center of curvature is the optical axis L, and six connection terminals 17B arranged in an arc shape in the outside in the radial direction The two corners disposed inward in the radial direction are disposed on a virtual arc VC10 whose center of curvature is the optical axis L, and the radial distance D4 between the virtual arc VC9 and the virtual arc VC10 is It is preferable that the length is shorter than the diagonal length of the connection terminal 17. Such a configuration facilitates downsizing of the imaging device 1 in the radial direction. The virtual arc VC9 in this case is a seventh virtual arc, and the virtual arc VC10 is an eighth virtual arc.

  The shape of the connection terminal 7 when viewed in the front-rear direction may be circular, and the shape of the connection terminal 17 may be rectangular when viewed in the front-rear direction. In addition, the shape of the connection terminal 7 when viewed in the front-rear direction may be rectangular, and the shape of the connection terminal 17 may be circular when viewed in the front-rear direction.

(Other embodiments)
In the embodiment described above, the connection terminals 7 and 17 arranged in a circular arc are arranged in two rows in the radial direction, but the connection terminals 7 and 17 arranged in a circular arc are arranged in three rows in the radial direction It is good. However, when the connection terminals 7 and 17 arranged in an arc shape are arranged in two rows in the radial direction, the imaging device 1 can be more easily miniaturized in the radial direction. If the number of radial rows of the connection terminals 7 and 17 is four or more, the reduction in size of the imaging device 1 in the radial direction tends to be impeded.

  In the embodiment described above, the connection terminals 7 and 17 are arranged in a circular arc in the circumferential direction, but the connection terminals 7 and 17 may be arranged in a linear shape in the circumferential direction. However, when the connection terminals 7 and 17 are arranged in a circular arc in the circumferential direction, the imaging device 1 can be more easily miniaturized in the radial direction. In addition, when the connection terminals 7 and 17 are arranged in an arc shape in the circumferential direction, the abrasion caused on the terminal holding member 22 when the interchangeable lens 3 is attached to and detached from the camera body 2 is less noticeable.

  In the embodiment described above, the intervals between the adjacent connection terminals 7 and 17 in the circumferential direction are constant, but if necessary in the configuration, the intervals between part of the adjacent connection terminals 7 and 17 in the circumferential direction May be different from other intervals. In this case, the distance between a part of the connection terminals 7 and 17 adjacent in the circumferential direction may be larger than the diameter of the connection terminals 7 and 17, but all the connection terminals 7 and 17 adjacent in the circumferential direction If the distance is smaller than the diameter of the connection terminals 7 and 17, miniaturization is facilitated. Further, in the embodiment described above, although the diameters of the adjacent connection terminals 7 and 17 in the circumferential direction are all the same, the connection terminals 7 and 17 of some of the connection terminals 7 and 17 have other diameters according to the structural needs. It may be different from 17 diameters. In this case, it is preferable that the distance between adjacent connection terminals 7 and 17 in the circumferential direction be smaller than the diameter of the smallest connection terminals 7 and 17.

1 imaging device 2 camera body 3 interchangeable lens 5 imaging element 7 connection terminal (body side connection terminal)
17 Connection terminal (lens side connection terminal)
VC3 virtual arc (first virtual arc)
VC4 virtual arc (second virtual arc)
VC5 virtual arc (fifth virtual arc)
VC6 virtual arc (sixth virtual arc)
VC7 virtual arc (third virtual arc)
VC8 virtual arc (fourth virtual arc)
VC9 Virtual arc (7th virtual arc)
VC10 Virtual arc (eighth virtual arc)
Y second direction Y2 first direction side Z1 subject side Z2 opposite subject side

Claims (10)

A camera body having an imaging element; and an interchangeable lens removably attached to the camera body,
Assuming that the side on which the interchangeable lens is disposed with respect to the camera body in the optical axis direction of the interchangeable lens is the subject side, and the opposite side of the subject side is the anti-subject side,
The camera body includes a plurality of body side connection terminals for electrically connecting the interchangeable lens and the camera body.
The interchangeable lens includes a plurality of lens side connection terminals contacting each of the plurality of main body side connection terminals,
The subject side ends of the plurality of main body side connection terminals are arranged on the subject side surface of the camera body,
The anti-subject side ends of the plurality of lens side connection terminals are disposed on the anti-subject side surface of the interchangeable lens,
The main body side connection terminal and the lens side connection terminal are arranged in a straight line or arc shape in the circumferential direction of the interchangeable lens, and are arranged in a straight line or circular arc shape and the lens side connection An imaging device characterized in that the terminals are arranged in two rows or three rows in the radial direction of the interchangeable lens.   The imaging device according to claim 1, wherein the main body side connection terminals and the lens side connection terminals arranged in a linear shape or an arc shape are arranged in two rows in the radial direction.   The number of one row of the main body side connection terminals and the lens side connection terminals arranged in a linear shape or an arc shape decreases inward in the radial direction. Imaging device.   The imaging device according to claim 1, wherein the main body side connection terminal and the lens side connection terminal are arranged in an arc shape in the circumferential direction. The shape of the imaging device when viewed from the optical axis direction is a rectangular shape,
Assuming that one side in a direction orthogonal to the optical axis direction and parallel to the short side of the image pickup element formed in a rectangular shape is a first direction side,
The plurality of main body side connection terminals and the plurality of lens side connection terminals are the first side of the first side of the imaging element formed in a rectangular shape when viewed from the optical axis direction. The imaging device according to any one of claims 1 to 4, wherein the imaging device is disposed on the direction side. Assuming that a predetermined direction orthogonal to the optical axis direction is a second direction,
The image pickup device is disposed on one side of the plurality of main body side connection terminals in the second direction when viewed from the optical axis direction,
The image pickup apparatus according to any one of claims 1 to 4, wherein the object side surface of the image pickup element is disposed closer to the object side than the opposite object side end of the main body side connection terminal. . The shape of the main body side connection terminal when viewed from the optical axis direction is circular or rectangular,
When the shape of the main body side connection terminal when viewed from the optical axis direction is circular, the main body side connection terminals adjacent in the circumferential direction when viewed from the optical axis direction The circumferential spacing is smaller than the diameter of the main body side connection terminal,
When the shape of the main body side connection terminal when viewed from the optical axis direction is rectangular, the main body side connection terminals adjacent in the circumferential direction when viewed from the optical axis direction The imaging device according to any one of claims 1 to 4, wherein an interval in a circumferential direction is smaller than a length of a diagonal of the main body side connection terminal. The shape of the lens side connection terminal when viewed from the optical axis direction is circular or rectangular,
When the shape of the lens side connection terminal when viewed from the optical axis direction is circular, when the lens side connection terminal is adjacent in the circumferential direction when viewed from the optical axis direction, The circumferential distance is smaller than the diameter of the lens side connection terminal,
When the shape of the lens side connection terminal when viewed from the optical axis direction is a rectangular shape, when the lens side connection terminal is adjacent in the circumferential direction when viewed from the optical axis direction, The imaging device according to any one of claims 1 to 4, wherein an interval in a circumferential direction is smaller than a diagonal length of the lens side connection terminal. The main body side connection terminals are arranged in an arc shape in the circumferential direction, and the main body side connection terminals arranged in an arc shape are arranged in two rows in the radial direction,
The shape of the main body side connection terminal when viewed from the optical axis direction is circular or rectangular,
When the shape of the main body side connection terminal when viewed from the optical axis direction is circular, a plurality of arcs arranged inside the radial direction when viewed from the optical axis direction Contact with the radially inner end of the plurality of main body side connection terminals arranged in the shape of a circular arc outside the radial direction, and a first virtual arc contacting the radial outer end of the main body side connection terminal The radial distance from the second virtual arc is shorter than the diameter of the main body side connection terminal,
When the shape of the main body side connection terminal when viewed from the optical axis direction is a rectangular shape, a plurality of arcs arranged inside the radial direction when viewed from the optical axis direction The two corner portions of the main body side connection terminal, which are disposed outside the radial direction, are disposed on a third virtual arc whose center of curvature is the optical axis of the interchangeable lens, and which is outside the radial direction The two corner portions of the plurality of main body side connection terminals arranged in a circular arc at the inner side in the radial direction are on a fourth virtual arc whose center of curvature is the optical axis of the interchangeable lens. The distance between the third virtual arc and the fourth virtual arc in the radial direction is shorter than the length of the diagonal of the main body side connection terminal. The imaging device in any one of 4. The lens side connection terminals are arranged in an arc shape in the circumferential direction, and the lens side connection terminals arranged in an arc shape are arranged in two rows in the radial direction,
The shape of the lens side connection terminal when viewed from the optical axis direction is circular or rectangular,
When the shape of the lens side connection terminal when viewed from the optical axis direction is circular, a plurality of arcs arranged inside the radial direction when viewed from the optical axis direction Contact with the radially inner end of the plurality of lens-side connection terminals arranged in an arc at the outer side of the radial direction, and a fifth imaginary arc contacting the outer end of the lens side connection terminal in the radial direction The radial distance from the sixth virtual arc is shorter than the diameter of the lens side connection terminal,
When the shape of the lens side connection terminal when viewed from the optical axis direction is a rectangular shape, a plurality of arcs arranged inside the radial direction when viewed from the optical axis direction The two corner portions of the lens-side connection terminal, which are disposed at the outer side in the radial direction, are disposed on a seventh virtual arc whose center of curvature is the optical axis of the interchangeable lens, and the outer side in the radial direction The two corner portions of the plurality of lens side connection terminals arranged in an arc at the inner side in the radial direction are on an eighth virtual arc whose center of curvature is the optical axis of the interchangeable lens. The distance between the seventh virtual arc and the eighth virtual arc in the radial direction is shorter than the length of the diagonal of the lens side connection terminal. The imaging device in any one of 4.

Images