JP2019133194A - Lens adapter - Google Patents

Abstract

To provide a technique that secures reliability of electric connection between a lens adapter and an imaging device with a simple structure even if a spacer is placed between the lens adapter including a telecommunication unit and the imaging device.SOLUTION: An imaging device 100 to which an interchangeable lens 150 is detachably attached via a lens adapter 400 is communicatively connected with the interchangeable lens 150 via a telecommunication unit 430 provided on the lens adapter 400 includes: an electric connection unit 260 formed in a comb shape by a plurality of plate-like terminals 262a-262j extending in an optical axis direction and arranged in parallel in a state in which their plate surfaces face each other. The electric connection unit 260 is electrically connected with the telecommunication unit 430 by the plate-like terminals 262a-262j getting sandwiched, respectively, in the plate thickness direction by a pair of elastic contact pieces 455 provided on the telecommunication unit 430 of the lens adapter 400. The plate-like terminals 262a-262j are provided so that a contact section with the pair of elastic contact pieces 455 is slidable in the optical axis direction.SELECTED DRAWING: Figure 16

Description

  The present invention relates to an imaging apparatus such as a digital camera to which an interchangeable lens is detachably mounted via a lens adapter having a telecommunication unit.

  In an interchangeable lens camera, when an interchangeable lens having a lens mount different from the shape of the lens mount is attached to the camera, the interchangeable lens is detachably attached to the camera lens mount via a lens adapter. . Some lens adapters have a telecommunication unit in order to enable communication between the interchangeable lens and the camera.

  In a lens adapter having a telecommunication unit, since the number of contact portions for electrically connecting the telecommunication unit and the camera is large, the reliability of the electrical connection between the contact portions with the camera and the durability of the contact portion are improved. Required.

  Therefore, a technique has been proposed which is composed of a plurality of movable contact pins supported so as to be movable in the optical axis direction in a state in which both the contact portion of the lens adapter and the contact portion of the camera are urged in a direction in contact with each other ( Patent Document 1).

JP-A-7-84307

  However, in Patent Document 1, when a spacer is interposed between the lens adapter and the camera in order to finely adjust the flange back (distance from the lens adapter to the image sensor), the contact pin on the lens adapter side and the camera side The contact position with the contact pin changes. For this reason, the contact pressure between the contact pin on the lens adapter side and the contact pin on the camera side may change and the reliability of electrical connection may be reduced.

  Therefore, the present invention can ensure the reliability of electrical connection between the lens adapter and the imaging device with a simple structure even when a spacer is interposed between the lens adapter having the telecommunication unit and the imaging device. The purpose is to provide technology that can be used.

  In order to achieve the above object, according to the present invention, an interchangeable lens is detachably mounted via a lens adapter, and connected to the interchangeable lens via a telecommunication unit provided in the lens adapter. In the imaging device, an electrical connection portion that is electrically connected to a terminal of the telecommunication unit is formed by a comb-shaped terminal, and the comb-shaped terminal has a contact portion with the terminal of the telecommunication unit. It is provided to be slidable with respect to the terminal of the telecommunication unit.

  According to the present invention, even when a spacer is interposed between a lens adapter having a telecommunication unit and an imaging device, it is possible to ensure reliability of electrical connection between the lens adapter and the imaging device with a simple structure. it can.

It is the perspective view which looked at the state by which the interchangeable lens is attached to the digital camera which is an example of the embodiment of the imaging device of the present invention via the lens adapter from the front side (subject side). It is the perspective view which looked at the interchangeable lens from the back side. (A) is the exploded perspective view which looked at the image sensor unit from the front side, (b) is the exploded perspective view which looked at the image sensor unit shown in (a) from the back side. (A) is the disassembled perspective view which looked at the image sensor protection unit from the front side, (b) is the disassembled perspective view which looked at the image sensor protection unit shown in (a) from the back side. (A) is the disassembled perspective view which looked at the fixed unit from the front side, (b) is the disassembled perspective view which looked at the fixed unit shown to (a) from the back side. FIG. 6 is a perspective view of the assembly of the fixed unit shown in FIG. (A) is the perspective view which looked at the telecommunication unit which comprises a fixed unit from the front side, (b) is the perspective view which looked at the telecommunication unit shown to (a) from the back side. (A) is the disassembled perspective view which looked at the lens adapter from the front side, (b) is the disassembled perspective view which looked at the lens adapter shown to (a) from the back side. (A) is the disassembled perspective view which looked at the telecommunication unit and holding member of the lens adapter from the front side, (b) is the disassembled perspective view which looked at the telecommunication unit and holding member shown in (a) from the back side. It is the perspective view which looked at the electrical connection part of the telecommunication unit from the back side lower part. It is the figure which looked at the lens adapter from the front side in the optical axis direction. It is principal part sectional drawing which shows the elastic member in the state which integrated the lens adapter in the camera. It is a perspective view which shows a mode that a lens adapter is attached with respect to a camera via a spacer. It is principal part sectional drawing which looked at the state by which the interchangeable lens was mounted | worn with the lens adapter attached to the camera from the upper surface side. It is principal part sectional drawing which looked at the state by which the interchangeable lens was mounted | worn with the lens adapter attached to the camera from the side surface side. It is principal part sectional drawing which shows the state in which the several contact part of the telecommunication unit of a lens adapter and the several contact part of the telecommunication unit of a camera were electrically connected. It is an enlarged view which shows the electrical connection state of the contact part by the side of a lens adapter, and the contact part by the side of a camera.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a digital camera, which is an example of an embodiment of an imaging apparatus according to the present invention, viewed from the front side (subject side) when an interchangeable lens is mounted via a lens adapter. In FIG. 1, the digital camera 100 and the interchangeable lens 150 are shown by broken lines for convenience of explanation. In the present embodiment, a digital camera is exemplified as an example of the imaging apparatus, but the present invention is not limited to this.

  As shown in FIG. 1, an interchangeable lens 150 is detachably mounted via a lens adapter 400 on the front side of a digital camera 100 (hereinafter referred to as camera 100) according to the present embodiment. The camera 100 includes an image sensor unit 300, an image sensor protection unit 350, and a fixed unit 200.

  FIG. 2 is a perspective view of the interchangeable lens 150 as viewed from the back side (the mounting surface side to the camera 100). As shown in FIG. 2, a mount portion 151 is provided on the back side of the interchangeable lens 150, and engagement claw portions 152 a to 152 c are provided at substantially equal intervals in the circumferential direction on the radially inner side of the mount portion 151. ing. In addition, an electrical connection portion 153 is provided between the engagement claw portion 152b and the engagement claw portion 152c on the back side of the interchangeable lens 150.

  3A is an exploded perspective view of the image sensor unit 300 viewed from the front side, and FIG. 3B is an exploded perspective view of the image sensor unit 300 shown in FIG. 3A viewed from the back side. As shown in FIG. 3, the image sensor unit 300 includes an element substrate 320 on which the image sensor 310 is mounted, and a holding member 330 that holds the image sensor 310 mounted on the element substrate 320.

  The image sensor 310 photoelectrically converts a subject image that has passed through the interchangeable lens 150 and formed on the imaging surface 311 and outputs an image signal. The element substrate 320 performs predetermined processing on the image signal output from the image sensor 310 and outputs the processed image signal to a main substrate (not shown). A fixing portion 331 is provided at the center of the holding member 330, and the imaging element 310 mounted on the element substrate 320 is fixed to the fixing portion 331 by adhesion or the like.

  4A is an exploded perspective view of the image sensor protection unit 350 viewed from the front side, and FIG. 4B is an exploded perspective view of the image sensor protection unit 350 shown in FIG. 4A viewed from the back side. . The image sensor protection unit 350 is disposed between the lens adapter 400 and the image sensor unit 300, and includes a substantially rectangular frame-shaped holding member 370 having an exposure opening 372 formed in the center as shown in FIG. . On the back side of the holding member 370, a fixing portion 371 that protrudes toward the image sensor 310 is provided around the exposure opening 372, and the glass member 360 is fixed to the fixing portion 371 with a double-sided tape or the like. In addition, a contact portion 373 that comes into surface contact with the fixed unit 200 is provided on the surface around the fixed portion 371 of the holding member 370.

  5A is an exploded perspective view of the fixed unit 200 viewed from the front side, and FIG. 5B is an exploded perspective view of the fixed unit 200 shown in FIG. 5A viewed from the back side. FIG. 6 is a perspective view of the assembly of the fixed unit 200 shown in FIG. 7A is a perspective view of the telecommunication unit 250 constituting the fixed unit 200 as seen from the front side, and FIG. 7B is a perspective view of the telecommunication unit 250 shown in FIG. 7A as seen from the back side. It is.

  As shown in FIGS. 5 and 6, the fixing unit 200 includes a substantially annular fixing member 210. On the front side of the fixing member 210, as shown in FIG. 5A, a fixing portion 221 to which the image sensor protection unit 350 is fixed and fixing portions 223a to 223d to which the lens adapter 400 is fixed are provided. . Further, on the front side of the fixing member 210, a contact portion 230 that a ring-shaped elastic member 490 (see FIG. 12) described later of the lens adapter 400 contacts in the optical axis direction is provided, and at the bottom of the fixing member 210, Air holes 225 are formed.

  The air hole 225 is disposed in a region where the ventilation resistance between the lens adapter 400 and the image sensor protection unit 350 is the smallest when the interchangeable lens 150 is attached to the camera 100 via the lens adapter 400.

  As a result, when air flows in this region due to the focus operation or zoom operation of the interchangeable lens 150, the air flows toward the air hole 225. That is, foreign matters such as dust floating in the region between the lens adapter 400 and the image sensor protection unit 350 can be guided to the air hole 225. Here, it is possible to avoid the foreign matter remaining in the region between the lens adapter 400 and the image sensor protection unit 350 by disposing a purification filter, an adhesive, or the like in the vicinity of the air hole 225 to attach the foreign matter. it can.

  A contact portion 373 provided on the holding member 370 of the image sensor protection unit 350 is in surface contact with the fixed portion 221. For this reason, the mating portion between the members has a sealed structure, and foreign matter such as dust can be prevented from entering the image sensor unit 300 from the mating portion between the members.

  On the other hand, as shown in FIG. 5B, a fixing portion 220 to which the telecommunication unit 250 is fixed and fixing portions 222a to 222c to which the image sensor unit 300 is fixed are provided on the back side of the fixing member 210. ing. The telecommunication unit 250 includes a holding member 270 that holds the terminal member 260.

  A contact portion 271 provided on the holding member 270 of the telecommunication unit 250 is in surface contact with the fixed portion 220. For this reason, the mating portion between the members has a sealed structure, and it is possible to prevent foreign matters such as dust from entering the imaging element unit 300 side from the mating portion between the members. In addition, the holding member 270 is insert-molded with the terminal member 260, thereby providing a sealed structure in which foreign matter such as dust cannot enter between the holding member 270 and the terminal member 260.

  The terminal member 260 includes contact portions 262a to 262j made of plate-like terminals and contact portions 266a to 266j made of pin-like terminals. The contact portions 262a to 262j are projected in the optical axis direction toward the lens adapter 400, and the contact portions 266a to 266j are projected in the optical axis direction toward the image sensor 310. The terminal member 260 corresponds to an example of the electrical connection portion of the present invention.

  The fixing portions 222a to 222c are fixed to the image sensor unit 300 via a spacer (not shown). By interposing a spacer between the fixing portions 222a to 222c and the image sensor unit 300, the flange back can be adjusted. The flange back is defined for each type of lens adapter. In the present embodiment, the imaging of the image sensor 310 of the image sensor unit 300 from the mount portion 411 (see FIG. 8A) of the fixed mount member 410 described later is performed. This is the distance to the surface 311.

  8A is an exploded perspective view of the lens adapter 400 viewed from the front side, and FIG. 8B is an exploded perspective view of the lens adapter 400 shown in FIG. 8A viewed from the back side. As shown in FIG. 8, the lens adapter 400 includes a fixed mount member 410, a movable mount member 420, a telecommunication unit 430, a holding member 470, and an elastic member 490.

  As shown in FIG. 8A, the engaging claws 152 a to 152 c of the interchangeable lens 150 are inserted into the central opening 412 of the fixed mount member 410. Around the central opening 412 on the front side of the fixed mount member 410, an annular mount portion 411 that protrudes to the front side is provided, and the mount portion 411 contacts the mount portion 151 of the interchangeable lens 150 in the optical axis direction. Touch.

  Screw insertion holes 414 a to 414 d are formed at substantially equal intervals in the circumferential direction on the radially outer side of the mount portion 411 of the fixed mount member 410. Further, as shown in FIG. 8B, the inner peripheral portion on the back side of the fixed mount member 410 is formed to have a larger diameter than the central opening portion 412, and a female screw portion 413 is formed in the inner peripheral portion. .

  As shown in FIG. 8A, the movable mount member 420 has a cylindrical male screw portion 422 that is disposed on the back side of the fixed mount member 410 and is screwed into the female screw portion 413 of the fixed mount member 410.

  Engagement claw parts 421a to 421c that engage with the engagement claw parts 152a to 152c of the interchangeable lens 150 so as to be detachable in the rotational direction are arranged at substantially equal intervals in the circumferential direction on the inner peripheral part on the front side of the male screw part 422. Is provided. Arm portions 429a to 429d protruding outward in the radial direction are provided on the outer peripheral portion on the back side of the male screw portion 422 at substantially equal intervals in the circumferential direction. It is connected to the arranged annular operation unit 423.

  Further, as shown in FIG. 8B, an annular contact portion 424 to which the elastic member 490 is fitted is provided on the back side of the male screw portion 422 so as to protrude to the back side, and the back side of the male screw portion 422 is provided. A detection recess 428 is provided in the inner periphery.

  In order to fix the interchangeable lens 150 to the lens adapter 400, the operation unit 423 of the movable mount member 420 is moved with the mount unit 151 of the interchangeable lens 150 in contact with the mount unit 411 of the fixed mount member 410. Rotate. At this time, the engaging claws 421a to 421c of the movable mount member 420 are engaged with the engaging claws 152a to 152c of the interchangeable lens 150 in the rotation direction. As a result, the interchangeable lens 150 is pulled into the image sensor unit 300 and is detachably attached to the lens adapter 400.

  9A is an exploded perspective view of the telecommunication unit 430 and the holding member 470 of the lens adapter 400 as viewed from the front side, and FIG. 9B shows the telecommunication unit 430 and the holding member 470 shown in FIG. It is the disassembled perspective view seen from the back side.

  As shown in FIG. 9, the telecommunication unit 430 includes electrical connection portions 440 and 450, a support member 460 that supports the electrical connection portion 440, and a flexible substrate that electrically connects the electrical connection portion 440 and the electrical connection portion 450. 480 and held by a holding member 470.

  The holding member 470 includes a fixing portion 471 to which the telecommunication unit 430 is fixed, and arm portions 475a and 475b to be fixed to the fixing mount member 410. The electrical connection portion 440 is electrically connected to the electrical connection portion 153 of the interchangeable lens 150, and the electrical connection portion 450 is electrically connected to the contact portions 262 a to 262 j constituting the terminal member 260 of the electrical communication unit 250 of the fixed unit 200. Connected to.

  The electrical connection portion 440 includes pin-shaped contact portions 441a to 441h. The contact portions 441a to 441h are movable in the optical axis direction while being biased toward the interchangeable lens 150 by a biasing member (not shown) with respect to the plurality of support holes 460a formed on the front side of the support member 460. Supported by each. The plurality of support holes 460a are arranged in an arc shape around the optical axis.

  A contact portion 462 that contacts the elastic member 490 is provided on the lower wall portion of the plurality of support holes 460a on the front side of the support member 460, and the contact portion 462 has an optical axis similar to the plurality of support holes 460a. Is provided in a circular arc shape. Screw insertion holes 461a and 461b are formed on both lower sides of the contact portion 462 of the support member 460.

  An arc recess 464 formed in an arc shape with the optical axis as the center is provided on the upper surface portion of the support member 460. A light shielding wall portion 465 is erected on the front side of the circular arc recess 464 of the support member 460, and a notch portion 466 that is inclined obliquely downward is provided on the back side of the circular arc recess 464.

  A mechanical switch 481 is mounted at the front center of the flexible substrate 480. The mechanical switch 481 includes a switch unit 483, and switches on / off electrical communication between the interchangeable lens 150 and the camera 100 when the switch unit 483 is pressed. In the present embodiment, when the switch unit 483 is pressed, electrical communication between the interchangeable lens 150 and the camera 100 is turned on. In addition, pattern exposed portions 482 a and 482 b are provided on both sides of the flexible substrate 480 corresponding to the screw insertion holes 461 a and 461 b of the support member 460. The pattern exposed portions 482a and 482b are arranged along the periphery of the screw insertion holes 461a and 461b.

  FIG. 10 is a perspective view of the electrical connection portion 450 of the telecommunication unit 430 as viewed from the lower back side. FIG. 11 is a diagram of the lens adapter 400 as viewed from the front side in the optical axis direction.

  As shown in FIG. 10, the electrical connection portion 450 has a plurality of openings 451, and the contact portions 451 a to 451 j in the plurality of openings 451 respectively constitute the telecommunication unit 250 of the fixed unit 200. 262a to 262j are provided.

  The opening 451 includes a bottom surface side opening 452 and a back surface side opening 453. The bottom surface side opening 452 opens to the bottom surface side of the camera 100, and the back surface side opening portion 453 is a bottom surface on the back surface side of the camera 100. It opens continuously to the side opening 452.

  Further, as shown in FIG. 11, the electrical connection portion 450 on the camera 100 side (fixed unit 200 side) is disposed on the outer side in the radial direction than the electrical connection portion 440 on the interchangeable lens 150 side. With such an arrangement, the electric connection portion 450 is covered with the fixed mount member 410 and the telecommunication unit 250 of the fixed unit 200 in the optical axis projection.

  For this reason, since the electrical connection portion 450 is not inadvertently touched, the electrical contact surface is prevented from becoming dirty, and stable electrical communication can be performed. Further, even when the lens adapter is replaced with a lens adapter that requires a larger opening than the lens adapter 400 of the present embodiment, the possibility that the electrical connection portion 450 is exposed on the projection of the optical axis is reduced. Can be performed.

  FIG. 12 is a cross-sectional view of a main part of the elastic member 490 in a state where the lens adapter 400 is incorporated in the camera 100. As shown in FIG. 12, the elastic member 490 is formed in a ring shape by a first annular portion 492 arranged on the front side and a second annular portion 493 arranged on the back side. The first annular portion 492 is fitted to the contact portion 424 of the movable mount member 420. In such a fitting state, the first annular portion 492 is expanded and deformed radially outward, and the inner peripheral portion 494 is fitted in a state where the inner peripheral portion 494 is in pressure contact with the contact portion 424 of the movable mount member 420 radially inward. Is done.

  The second annular portion 493 has a lip portion 495 that gradually increases in diameter radially outward toward the back side (camera 100 side), and the lip portion 495 is formed thinner than the first annular portion 492. ing. The lip portion 495 is in partial contact with the arcuate contact portion 462 provided on the support member 460 of the telecommunication unit 430 fixed to the fixed mount member 410.

  In a state in which the lens adapter 400 is incorporated in the camera 100, the contact portion 462 on the lens adapter 400 side and the contact portion 230 on the camera 100 side are arranged on a plane substantially orthogonal to the optical axis and are substantially continuous in the circumferential direction. Arranged. The lip portion 495 of the elastic member 490 comes into contact with the arc-shaped contact portion 230 provided on the fixing member 210 of the camera 100 in a state of being pressed. That is, part of the lip portion 495 of the elastic member 490 is in contact with the contact portion 462 on the lens adapter 400 side, and the remaining portion in the circumferential direction is in contact with the contact portion 230 on the camera 100 side.

  At this time, the lip portion 495 of the second annular portion 493 is deformed in the radial direction at the same time as being compressed and deformed in the optical axis direction. In other words, the second annular portion 493 is in contact with the contact portions 462 and 230 not only by pressure contact due to compression deformation but also due to falling deformation, so that the amount of deformation is greater than that of the first ring portion 492. .

  Thereby, for example, even if the position of the contact portion 462 of the support member 460 and the contact portion 230 of the fixing member 210 fluctuates due to variations in the dimensional accuracy of the parts, the elastic member 490 is always elastic. The pressure contact state of the member 490 can be maintained. In addition, a dust-proof structure is provided to prevent foreign matters such as dust from entering the optical path of the interchangeable lens 150, and foreign objects can be prevented from being reflected on the imaging surface 311 of the image sensor 310. In addition, even if inadvertent light emission occurs around the camera, the light shielding structure prevents light from entering the optical path of the interchangeable lens 150, thereby preventing reflection on the imaging surface 311 of the imaging element 310. It becomes.

  FIG. 13 is a perspective view showing a state in which the lens adapter 400 is attached to the camera 100 via the spacer 240. FIG. 14 is a cross-sectional view of the main part when the interchangeable lens 150 is attached to the lens adapter 400 attached to the camera 100 as viewed from the upper surface side.

  As shown in FIGS. 13 and 14, the lens adapter 400 includes spacers 240 in fixing portions 223 a to 223 d provided in the fixing member 210 of the camera 100 by screws inserted into the screw insertion holes 414 a to 414 d of the fixing mount member 410. And is detachably fastened. At this time, the flange back can be adjusted by changing the thickness of the spacer 240. The means for fixing the lens adapter 400 and the camera 100 is not limited to screws, and other fixing means may be used.

  FIG. 15 is a cross-sectional view of a principal part when the interchangeable lens 150 is mounted on the lens adapter 400 attached to the camera 100 as viewed from the side. As shown in FIG. 15, the electrical connection portion 153 of the interchangeable lens 150 is electrically connected to the electrical connection portion 440 of the electrical communication unit 430 of the lens adapter 400.

  In addition, the electric connection portion 450 of the telecommunication unit 430 of the lens adapter 400 is electrically connected to the terminal member 260 of the telecommunication unit 250 of the camera 100 in a range 399 in the drawing. Thereby, electrical communication can be performed between the interchangeable lens 150 and the camera 100.

  FIG. 16 shows a state where a plurality of contact portions 451a to 451j of the electrical connection portion 450 (lens adapter 400 side) and a plurality of contact portions 262a to 262j of the terminal member 260 (camera 100 side) are electrically connected. It is principal part sectional drawing. FIG. 17 is an enlarged view showing an electrical connection state between the contact portion 451 a of the electrical connection portion 450 and the contact portion 262 a of the terminal member 260.

  When adjusting the flange back, the contact positions of the contact portions 451a to 451j of the electrical connection portion 450 and the contact portions 262a to 262j of the terminal member 260 are set in the optical axis direction according to the amount of change in the thickness of the spacer 240 ( It changes in the direction of the arrow in FIG. Such a contact position changes in the optical axis direction within a range 399 shown in FIG. The length of the range 399 in the optical axis direction is set to be sufficiently longer than the amount of change in the thickness of the spacer 240, that is, the adjustment amount of the flange back.

  Here, in this embodiment, as described above, the plurality of contact portions 262a to 262j of the terminal member 260 on the camera 100 side are configured by plate-like terminals that extend in the optical axis direction, and are arranged on the bottom surface side of the camera 100. Has been. As shown in FIG. 16, the plurality of contact portions 262a to 262j are juxtaposed in a state where the respective plate surfaces face each other in the width direction of the camera 100 (vertical direction in FIG. 16) orthogonal to the optical axis. Thus, comb-like terminals are formed.

  On the other hand, as shown in FIG. 17, the plurality of contact portions 451 a to 451 j of the electrical connection portion 450 on the lens adapter 400 side are each a plurality of pairs that sandwich the plate surfaces of the contact portions 262 a to 262 j of the terminal member 260 in the plate thickness direction. Are formed in a comb-teeth shape.

  A pair of elastic contact pieces 455 constituting the contact portion 451a will be described as an example. The pair of elastic contact pieces 455 are biased in a direction to sandwich the plate surface of the contact portion 262a of the terminal member 260 in the plate thickness direction. The contact portion 262a is slidable in the optical axis direction. Moreover, the contact part 454 with the plate | board surface of the contact part 262a of a pair of elastic contact piece 455 is formed in spherical shape.

  Accordingly, even if the contact position between the contact portions 451a to 451j on the lens adapter 400 side and the contact portions 262a to 262j on the camera 100 side changes in the optical axis direction according to the amount of change in the thickness of the spacer 240, the contact pressure is increased. Can be made constant. For this reason, it is possible to avoid a decrease in the self-cleaning performance of the contact surface due to a change in the contact pressure, a decrease in the durability of peeling of the plating, a conduction reliability during vibration, that is, a decrease in the reliability of electrical connection. .

  As described above, in this embodiment, even when the spacer 240 is interposed between the lens adapter 400 having the telecommunication unit and the camera 100, the electrical connection between the lens adapter 400 and the camera 100 can be performed with a simple structure. Reliability can be ensured.

  The configuration of the present invention is not limited to that exemplified in the above embodiment, and the material, shape, dimensions, form, number, arrangement location, and the like can be changed as appropriate without departing from the scope of the present invention. It is.

  For example, in the above-described embodiment, the contact portions 451a to 451j on the lens adapter 400 side are comb-shaped terminals configured by a plurality of pairs of elastic contact pieces 455, and the contact portions 262a to 262j on the camera 100 side are a plurality of plate-like terminals. However, the present invention is not limited to this. That is, one of the contact portions 451a to 451j on the lens adapter 400 side and the contact portions 262a to 262j on the camera 100 side may be constituted by a plurality of plate-like terminals, and the other may be constituted by a plurality of pairs of elastic contact pieces 455. Good.

DESCRIPTION OF SYMBOLS 100 Camera 150 Interchangeable lens 260 Terminal member 262a-262j Contact part 400 Lens adapter 430 Electrical communication unit 450 Electrical connection part 451a-451j Contact part 455 A pair of elastic contact piece

The present invention relates to an apparatus body of an imaging apparatus and a lens adapter to which an interchangeable lens can be attached and detached .

Accordingly, the present invention provides a technique capable of ensuring the reliability of the electrical connection between any lens adapter and the image pickup device with a simple structure when interposing the spacer between the lenses adapter and the imaging apparatus The purpose is to do.

In order to achieve the above object, the present invention provides a lens adapter in which an apparatus main body and an interchangeable lens of an imaging apparatus can be attached and detached, provided in the apparatus main body in a state where the lens adapter is attached to the apparatus main body. A first terminal electrically connected to the first comb-shaped terminal; and a connection portion provided in the interchangeable lens in a state where the interchangeable lens is mounted on the lens adapter; and A second terminal different from the first terminal, and a contact position between the first terminal and the first comb-shaped terminal is relatively movable in a direction parallel to the optical axis. characterized in that there.

According to the present invention, it is possible to ensure the reliability of the electrical connection even when interposing the spacer, a lens adapter and the image pickup device with a simple structure between the lenses adapter and the imaging device.

Claims (4)

An imaging device in which an interchangeable lens is detachably mounted via a lens adapter, and is connected to the interchangeable lens via a telecommunication unit provided in the lens adapter,
The electrical connection portion electrically connected to the terminal of the telecommunication unit is formed by a comb-like terminal, and the contact portion of the comb-like terminal with the terminal of the telecommunication unit is a terminal of the telecommunication unit. An image pickup apparatus characterized by being slidable with respect to the image pickup apparatus.   2. The imaging according to claim 1, wherein the comb-shaped terminals are configured by a plurality of plate-shaped terminals arranged in parallel in a state of extending in the optical axis direction and facing the respective plate surfaces to each other. apparatus.   The comb-like terminals are arranged on the bottom surface side of the imaging device, and the plurality of plate-like terminals are arranged in parallel with each plate surface facing each other in the width direction of the imaging device orthogonal to the optical axis. The imaging apparatus according to claim 2, wherein the imaging apparatus is configured.   2. The comb-like terminal is disposed on a radially outer side of an electrical connection portion provided in the telecommunication unit of the lens adapter, to which the interchangeable lens is electrically connected. Or the imaging device of 2.