JP2013080211A - Intermediate adaptor, accessory, and interchangeable lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intermediate adapter allowing two independent communication systems to communicate with each other successfully.SOLUTION: An intermediate adapter is mounted on a camera body having 12 body-side connection terminals arranged in the vicinity of a body-side mount part of the camera body. The intermediate adapter is provided with a first mount part having a mount center, a body-compatible connection terminal holding part with 12 body-compatible connection terminals arranged thereon to be connected with the 12 body-side connection terminals respectively, and a second mount part on which an accessory is mounted. The 12 body-compatible connection terminals are arranged so as to meet a predetermined relationship.

Description

  The present invention relates to an intermediate adapter, an accessory, and an interchangeable lens.

  A camera system that performs electrical communication between a camera body and an interchangeable lens is known. For example, Patent Document 1 describes an interchangeable lens having a terminal group for communicating with a camera body and a terminal group for communicating with an adapter such as an intermediate ring or a rear focus converter. These two terminal groups constitute an independent communication system, and the interchangeable lens first communicates with the adapter through one communication system when the adapter is mounted. Thereafter, the interchangeable lens communicates with the camera body through the other communication system. These terminal groups are arranged side by side in an arc shape, and at one end thereof, a terminal group for supplying power from the camera body to the interchangeable lens and the adapter is arranged adjacently.

Japanese Patent Laid-Open No. 7-234432

  The camera body and the interchangeable lens described in Patent Literature 1 may adversely affect each other's communication when two independent communication systems communicate simultaneously.

The intermediate adapter according to claim 1, wherein a camera body having twelve body side connection terminals provided in the vicinity of a body side mount portion of the camera body is attached, and a first mount portion having a first mount center point A body-compatible connection terminal holding portion in which 12 body-compatible connection terminals are arranged, each having a contact portion that is connected to each of the 12 body-side connection terminals and contacts the body-side connection terminal; The twelve body-corresponding connection terminals include a first body-corresponding connection terminal to which a first voltage is supplied from the camera body, and the second body-corresponding connection terminal. A second body corresponding connection terminal serving as a ground terminal corresponding to one voltage, a third body corresponding connection terminal receiving a first clock signal from the camera body, A fourth body corresponding connection terminal to which the first data signal is input from the camera body in synchronization with the clock signal, and a fifth data terminal for outputting the second data signal to the camera body in synchronization with the first clock signal. A body-corresponding connection terminal, a sixth body-corresponding connection terminal to which a second clock signal is input from the camera body, and a seventh body that outputs a third data signal to the camera body in synchronization with the second clock signal A corresponding connection terminal; an eighth body corresponding connection terminal that outputs a first asynchronous signal that is not synchronized with the first clock signal and the second clock signal to the camera body; and the first clock signal and the second clock signal. A second asynchronous signal that is not synchronized is input to the ninth body from the camera body, the first clock signal, and the second clock signal. A third asynchronous signal that is not synchronized with the first body signal is input to the camera body corresponding connection terminal, and the first asynchronous signal output from the eighth body corresponding connection terminal and the third body corresponding connection terminal. Based on the first clock signal, the first data signal is received from the camera body using the fourth body corresponding connection terminal, and the camera body is connected to the camera body using the fifth body corresponding connection terminal. A second data signal is transmitted, and the second asynchronous signal input from the ninth body corresponding connection terminal, the third asynchronous signal output from the tenth body corresponding connection terminal, and the sixth body Based on the second clock signal input at the corresponding connection terminal, the third data signal to the camera body using the seventh body corresponding connection terminal. A second voltage that is lower than the first voltage for transmission of the first body corresponding connection terminal supplied from the camera body, and a twelfth body corresponding connection terminal serving as a ground terminal corresponding to the second voltage; The inner angle formed by the contact portion of the first body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is determined from the 12 body corresponding connection terminals. The contact portion of the arbitrarily selected two body-corresponding connection terminals is the largest inside angle formed with respect to the first mount center point, and the contact portion of the eleventh body-corresponding connection terminal and the twelfth body An inner angle formed by the contact portion of the connection terminal with respect to the first mount center point is any one of the contact portions of the first body-corresponding connection terminal to the tenth body-corresponding connection terminal. The contact portion of the eleventh body corresponding connection terminal is smaller than the inner angle formed by the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point, and the contact portion of the eleventh body corresponding connection terminal. The inner angle formed with respect to the first mount center point is any of the first body corresponding connection terminal, the second body corresponding connection terminal, and the fourth body corresponding connection terminal to the tenth body corresponding connection terminal. The one contact portion and the contact portion of the eleventh body corresponding connection terminal are smaller than the inner angle formed with respect to the first mount center point, and the contact portion of the fourth body corresponding connection terminal and the eleventh body The internal angle formed by the contact portion of the corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal, the second body corresponding connection terminal, and the fifth body. The contact portion of any one of the connection terminals corresponding to the tenth body and the contact portion of the connection terminal corresponding to the eleventh body is smaller than an inner angle formed with respect to the first mount center point, The inner angle formed by the contact portion of the fifth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body correspondence. Any one contact portion of the connection terminal and the sixth body-corresponding connection terminal to the tenth body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal with respect to the first mount center point An inner angle formed by the contact portion of the eighth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point. The first body corresponding connection terminal, the second body corresponding connection terminal, the sixth body corresponding connection terminal, the seventh body corresponding connection terminal, the ninth body corresponding connection terminal, and the tenth body corresponding connection terminal. Any one of the contact portions and the contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the ninth body corresponding connection terminal and the The inner angle formed by the contact portion of the eleventh body connection terminal with respect to the first mount center point is the first body connection terminal, the second body connection terminal, the sixth body connection terminal, Any one of the contact portion of the seventh body corresponding connection terminal and the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are the first mount. An inner angle formed by the contact portion of the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is smaller than an inner angle formed with respect to the center point. Any one of the contact portion corresponding to the first body corresponding connection terminal, the second body corresponding connection terminal, the sixth body corresponding connection terminal, and the seventh body corresponding connection terminal and the eleventh body corresponding connection terminal. The contact portion of the sixth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point. The inner angle formed by any one of the first body corresponding connection terminal, the second body corresponding connection terminal, and the seventh body corresponding connection terminal and the eleventh body. The contact portion of the response connection terminal is smaller than the inner angle formed with respect to the first mount center point, and the contact portion of the seventh body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal are the first The inner angle formed with respect to one mount center point is determined by the contact portion of any one of the first body corresponding connection terminal and the second body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal being An inner angle formed by the contact portion of the second body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is smaller than an inner angle formed with respect to the first mount center point. The contact portion of the connection terminal corresponding to the first body and the contact portion of the connection terminal corresponding to the eleventh body are smaller than an inner angle formed with respect to the first mount center point.
The intermediate adapter according to claim 7, wherein a camera body having twelve body side connection terminals provided in the vicinity of a body side mount portion of the camera body is attached, and a first mount portion having a first mount center point; , A body-corresponding connection terminal holding portion in which at least five body-corresponding connection terminals each having a contact portion that contacts one of the body-side connection terminals, and an accessory can be attached and detached, and the second mount center point And the five body-corresponding connection terminals are connected to a clock input body-corresponding connection terminal to which a clock signal is input from the camera body, and from the camera body in synchronization with the clock signal. A data input body corresponding connection terminal to which one data signal is input and second data in the camera body in synchronization with the clock signal. Data output body corresponding connection terminal for outputting a signal, an asynchronous signal output body corresponding connection terminal for outputting an asynchronous signal not synchronized with the clock signal to the camera body, and the asynchronous signal output from the asynchronous signal output body corresponding connection terminal And receiving the first data signal from the camera body using the data input body corresponding connection terminal based on the clock signal input at the clock input body corresponding connection terminal, and the data output body corresponding connection terminal. Operating voltage for performing transmission of the second data signal to the camera body using the voltage supply body corresponding connection terminal supplied from the camera body, the asynchronous signal output body corresponding connection terminal The contact portion and the contact portion of the connection terminal corresponding to the voltage supply body are the first mouse. The inner angle formed with respect to the center point of the first body is the largest of the inner angles formed by the contact portions of the two body-corresponding connection terminals arbitrarily selected from the five body-corresponding connection terminals with respect to the first mount center point. The inner angle formed by the contact portion of the connection terminal corresponding to the clock input body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is the connection terminal corresponding to the data input body, the data From an inner angle formed by the contact portion corresponding to any one of the output body corresponding connection terminal and the asynchronous signal output body corresponding connection terminal and the contact portion of the voltage supply body corresponding connection terminal with respect to the first mount center point The contact portion of the connection terminal corresponding to the data input body is small and the contact portion of the connection terminal corresponding to the voltage supply body is smaller than the first mount center point. The inner angle formed by the contact point corresponding to one of the connection terminal corresponding to the data output body and the connection terminal corresponding to the asynchronous signal output body and the contact part corresponding to the connection terminal corresponding to the voltage supply body at the center point of the first mount The inner angle formed by the contact portion of the connection terminal corresponding to the data output body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is smaller than the inner angle formed with respect to the first mount center point. The contact portion of the corresponding connection terminal and the contact portion of the connection terminal corresponding to the voltage supply body are smaller than an inner angle formed with respect to the first mount center point.
The intermediate adapter according to claim 13 is provided with a camera body having twelve body-side connection terminals provided in the vicinity of the body-side mount portion of the camera body, and a first mount portion having a first mount center point. A body-corresponding connection terminal holding portion in which twelve body-corresponding connection terminals each having a contact portion that is connected to each of the twelve body-side connection terminals and in contact with the body-side connection terminal are disposed; The twelve body-corresponding connection terminals have a body-corresponding-side exposed region exposed on the surface of the body-corresponding connection terminal holding part. A first body corresponding connection terminal to which a first voltage is supplied from the camera body; a second body corresponding connection terminal serving as a ground terminal corresponding to the first voltage; A third body corresponding connection terminal to which a first clock signal is input from the camera body; a fourth body corresponding connection terminal to which a first data signal is input from the camera body in synchronization with the first clock signal; In synchronization with one clock signal, a fifth body corresponding connection terminal that outputs a second data signal to the camera body, a sixth body corresponding connection terminal that receives a second clock signal from the camera body, and the second A seventh body corresponding connection terminal that outputs a third data signal to the camera body in synchronization with a clock signal, and a first asynchronous signal that is not synchronized with the first clock signal and the second clock signal are output to the camera body. An eighth body corresponding connection terminal and a second asynchronous signal that is not synchronized with the first clock signal and the second clock signal is the camera body. A ninth body corresponding connection terminal, a tenth body corresponding connection terminal for outputting a third asynchronous signal not synchronized with the first clock signal and the second clock signal to the camera body, and the eighth body corresponding connection; Based on the first asynchronous signal output from the terminal and the first clock signal input at the third body corresponding connection terminal, the first data signal from the camera body using the fourth body corresponding connection terminal And transmitting the second data signal to the camera body using the fifth body corresponding connection terminal, and the second asynchronous signal input at the ninth body corresponding connection terminal, Based on the third asynchronous signal output from the connection terminal corresponding to the tenth body and the second clock signal input from the connection terminal corresponding to the sixth body. Thus, a second voltage smaller than the first voltage for transmitting the third data signal to the camera body using the seventh body corresponding connection terminal is supplied from the camera body. A connection terminal and a connection terminal corresponding to a twelfth body serving as a ground terminal corresponding to the second voltage, and the contact portion of the connection terminal corresponding to the first body and the contact portion of the connection terminal corresponding to the eleventh body are The inner angle formed with respect to the first mount center point is the inner angle formed by the contact portions of two body-corresponding connection terminals arbitrarily selected from the twelve body-corresponding connection terminals with respect to the first mount center point. The inner angle formed by the contact portion of the eleventh body-corresponding connection terminal and the contact portion of the twelfth body-corresponding connection terminal with respect to the first mount center point is the largest in the first body The contact portion of any one of the corresponding connection terminal to the tenth body connection terminal and the contact portion of the eleventh body connection terminal is smaller than an inner angle formed with respect to the first mount center point. The inner angle formed by the contact portion of the connection terminal corresponding to 3 bodies and the contact portion of the connection terminal corresponding to the eleventh body with respect to the first mount center point is the connection corresponding to the first body and the connection corresponding to the second body. Any one of the terminal and the fourth body corresponding connection terminal to the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point An inner angle formed by the contact portion of the fourth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point. Any one of the first body corresponding connection terminal, the second body corresponding connection terminal, and the fifth body corresponding connection terminal to the tenth body corresponding connection terminal and the eleventh body corresponding connection terminal. And the contact portion of the fifth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are smaller than the inner angle formed with respect to the first mount center point. The inner angle formed with respect to the point is the contact portion of any one of the first body corresponding connection terminal, the second body corresponding connection terminal, and the sixth body corresponding connection terminal to the tenth body corresponding connection terminal. The contact portion of the eleventh body connection terminal is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the eighth body connection terminal and the The inner angle formed by the contact portion of the 11 body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal, the second body corresponding connection terminal, the sixth body corresponding connection terminal, The contact portion of any one of the 7 body corresponding connection terminal, the ninth body corresponding connection terminal, and the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are the center of the first mount. An inner angle formed by the contact portion of the ninth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is smaller than an inner angle formed with respect to the point. Any one of the body corresponding connection terminal, the second body corresponding connection terminal, the sixth body corresponding connection terminal, the seventh body corresponding connection terminal, and the tenth body corresponding connection terminal. The contact portion of the tenth body corresponding connection terminal and the contact portion corresponding to the eleventh body are smaller than an inner angle formed by the contact portion of the eleventh body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point. The internal angle formed by the contact portion of the terminal with respect to the first mount center point corresponds to the first body corresponding connection terminal, the second body corresponding connection terminal, the sixth body corresponding connection terminal, and the seventh body corresponding The contact portion of the sixth body-corresponding connection terminal is smaller than an inner angle formed by any one contact portion of the connection terminals and the contact portion of the eleventh body-corresponding connection terminal with respect to the first mount center point. And an inner angle formed by the contact portion of the eleventh body connection terminal with respect to the first mount center point is the first body corresponding connection terminal, the second body corresponding connection terminal, and The seventh body-corresponding connection is less than an inner angle formed by any one of the seventh body-corresponding connection terminals and the contact part of the eleventh body-corresponding connection terminal with respect to the first mount center point. The inner angle formed by the contact portion of the terminal and the contact portion of the eleventh body connection terminal with respect to the first mount center point is either the first body connection terminal or the second body connection terminal. The one contact portion and the contact portion of the eleventh body corresponding connection terminal are smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the second body corresponding connection terminal and the eleventh body The inner angle formed by the contact portion of the corresponding connection terminal with respect to the first mount center point is the contact of the contact portion of the first body-corresponding connection terminal and the eleventh body-corresponding connection terminal. The portion is smaller than an inner angle formed with respect to the first mount center point.
The intermediate adapter according to claim 19, wherein a camera body having twelve body side connection terminals provided in the vicinity of a body side mount portion of the camera body is attached, and a first mount portion having a first mount center point , A body-corresponding connection terminal holding portion in which at least five body-corresponding connection terminals each having a contact portion that contacts one of the body-side connection terminals, and an accessory can be attached and detached, and the second mount center point The five body-corresponding connection terminals have a body-corresponding-side exposed region exposed on the surface of the body-corresponding connection terminal holding part, and a clock signal is input from the camera body. A clock input body compatible connection terminal and a data input body to which a first data signal is input from the camera body in synchronization with the clock signal. A corresponding connection terminal, a data output body corresponding connection terminal that outputs a second data signal to the camera body in synchronization with the clock signal, and an asynchronous signal output that outputs an asynchronous signal not synchronized with the clock signal to the camera body The camera using the connection terminal corresponding to the data input body based on the connection signal corresponding to the body and the asynchronous signal output from the connection terminal corresponding to the asynchronous signal and the clock signal input from the connection terminal corresponding to the clock input body An operating voltage for receiving the first data signal from the body and transmitting the second data signal to the camera body using the data output body corresponding connection terminal is supplied from the camera body. The connection terminal corresponding to the asynchronous signal output body. The inner angle formed by the contact portion and the contact portion of the voltage supply body corresponding connection terminal with respect to the first mount center point is two body corresponding connection terminals arbitrarily selected from the five body corresponding connection terminals. The contact portion of the clock input body corresponding connection terminal and the contact portion of the voltage supply body corresponding connection terminal are the first inner angle formed with respect to the first mount center point. The inner angle formed with respect to the mount center point corresponds to any one of the contact part corresponding to the data input body, the connection terminal corresponding to the data output body, and the connection terminal corresponding to the asynchronous signal output body and the voltage supply body. The contact portion of the connection terminal is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the connection terminal corresponding to the data input body and the The inner angle formed by the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is one of the contact portions corresponding to the connection terminal corresponding to the data output body and the connection terminal corresponding to the asynchronous signal output body. And the contact portion of the connection terminal corresponding to the voltage supply body is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the connection terminal corresponding to the data output body and the contact portion corresponding to the voltage supply body The internal angle formed by the portion with respect to the first mount center point is determined by the contact portion of the connection terminal corresponding to the asynchronous signal output body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point. It is characterized by being smaller than the inner angle formed.
The accessory according to claim 28, wherein an intermediate adapter having 12 adapter-side connection terminals provided in the vicinity of the adapter-side mount portion of the intermediate adapter is attached, and a first mount portion having a first mount center point; An adapter-compatible connection terminal holding portion in which 12 adapter-compatible connection terminals are arranged, each having a contact portion that is connected to each of the 12 adapter-side connection terminals and contacts the adapter-side connection terminal, and an accessory is detachable A second mount portion having a second mount center point, and a contact portion that is electrically connected to one of the twelve adapter-compatible connection terminals, each contacting one accessory-side connection terminal. An accessory-compatible connection terminal holding portion in which twelve accessory-compatible connection terminals are arranged, and the twelve adapter-compatible connection terminals are: The first adapter connection terminal supplied with the first voltage from the intermediate adapter, the second adapter connection terminal serving as the ground terminal corresponding to the first voltage, and the first clock signal from the intermediate adapter. A connection terminal corresponding to the third adapter, a connection terminal corresponding to the fourth adapter to which the first data signal is input from the intermediate adapter in synchronization with the first clock signal, and the intermediate in synchronization with the first clock signal. A connection terminal corresponding to a fifth adapter that outputs a second data signal to the adapter, a connection terminal corresponding to a sixth adapter that receives a second clock signal from the intermediate adapter, and the intermediate adapter in synchronization with the second clock signal And a first asynchronous signal that is not synchronized with the first clock signal and the second clock signal. A connection terminal corresponding to an eighth adapter output to the intermediate adapter, a connection terminal corresponding to a ninth adapter to which a second asynchronous signal not synchronized with the first clock signal and the second clock signal is input from the intermediate adapter; A connection terminal corresponding to a tenth adapter that outputs a first clock signal and a third asynchronous signal that is not synchronized with the second clock signal to the intermediate adapter, and the first asynchronous signal and the third output that are output from the connection terminal corresponding to the eighth adapter. Based on the first clock signal input at the adapter-compatible connection terminal, the first adapter receives the first data signal from the intermediate adapter using the fourth adapter-compatible connection terminal, and uses the fifth adapter-compatible connection terminal. And transmitting the second data signal to the intermediate adapter, and at the connection terminal corresponding to the ninth adapter Based on the second asynchronous signal inputted, the third asynchronous signal outputted from the connection terminal corresponding to the tenth adapter, and the second clock signal inputted from the connection terminal corresponding to the sixth adapter, the seventh adapter A second voltage smaller than a first voltage for transmitting the third data signal to the intermediate adapter using the corresponding connection terminal; an eleventh adapter-compatible connection terminal supplied from the intermediate adapter; A connection terminal corresponding to the twelfth adapter serving as a ground terminal corresponding to two voltages, and at least two positional relationships among the twelve accessory-corresponding connection terminals in the circumferential direction centering on the second mount center point are: Different from the positional relationship of at least two of the twelve adapter-compatible connecting terminals in the circumferential direction around the first mount center point. It is characterized in.
The accessory according to claim 29, wherein an intermediate adapter having at least five adapter side connection terminals provided in the vicinity of the adapter side mount portion of the intermediate adapter is attached, and a first mount portion having a first mount center point , An adapter-compatible connection terminal holding portion in which at least five adapter-compatible connection terminals each having a contact portion that contacts one of the adapter-side connection terminals, and an accessory can be attached and detached, and the second mount center point And at least five accessory-corresponding connection terminals each having a contact portion that is electrically connected to one of the five adapter-compatible connection terminals and that contacts each accessory-side connection terminal. An accessory-compatible connection terminal holding portion, and the five adapter-compatible connection terminals are connected to the intermediate adapter. A connection terminal corresponding to the clock input adapter to which the lock signal is input, and a connection terminal corresponding to the data input adapter to which the first data signal is input from the intermediate adapter in synchronization with the clock signal. Connection terminal for data output adapter that outputs second data signal to intermediate adapter, connection terminal for asynchronous signal output adapter that outputs asynchronous signal not synchronized with clock signal to intermediate adapter, and connection for asynchronous signal output adapter Receiving the first data signal from the intermediate adapter using the data input adapter compatible connection terminal based on the asynchronous signal output from the terminal and the clock signal input at the clock input adapter compatible connection terminal; The intermediate terminal is connected using the connection terminal corresponding to the data output adapter. Operating voltage for performing transmission of the second data signal to the switcher comprises a connection terminal corresponding to the voltage supply adapter supplied from the intermediate adapter, and in a circumferential direction centered on the second mount center point The positional relationship of at least two of the five accessory-compatible connection terminals is different from the positional relationship of at least two of the five adapter-compatible connection terminals in the circumferential direction around the first mount center point. It is characterized by.
The interchangeable lens according to claim 30, wherein the intermediate adapter having 12 adapter-side connection terminals provided in the vicinity of the adapter-side mount portion of the intermediate adapter is attached, the mount portion having a mount center point, and the 12 lenses A lens-side connection terminal holding portion in which 12 lens-side connection terminals each having a contact portion that is connected to each of the adapter-side connection terminals and contacts the adapter-side connection terminal are disposed, and the 12 lenses are provided. The side connection terminals include a first lens side connection terminal to which a first voltage is supplied from the intermediate adapter, a second lens side connection terminal serving as a ground terminal corresponding to the first voltage, and a first clock from the intermediate adapter. A third lens side connection terminal to which a signal is input and a fourth lens side to which the first data signal is input from the intermediate adapter in synchronization with the first clock signal A connection terminal, a fifth lens side connection terminal for outputting a second data signal to the intermediate adapter in synchronization with the first clock signal, and a sixth lens side connection for receiving a second clock signal from the intermediate adapter. A terminal, a seventh lens side connection terminal that outputs a third data signal to the intermediate adapter in synchronization with the second clock signal, and a first asynchronous signal that is not synchronized with the first clock signal and the second clock signal. An eighth lens side connection terminal that outputs to the intermediate adapter; a ninth lens side connection terminal that receives a second asynchronous signal that is not synchronized with the first clock signal and the second clock signal from the intermediate adapter; A tenth lens side connection terminal for outputting a third asynchronous signal not synchronized with the first clock signal and the second clock signal to the intermediate adapter; Based on the first asynchronous signal output from the lens side connection terminal and the first clock signal input from the third lens side connection terminal, the fourth lens side connection terminal is used to output the first asynchronous signal from the intermediate adapter. Receiving the first data signal, transmitting the second data signal to the intermediate adapter using the fifth lens-side connection terminal, and inputting the second asynchronous signal input to the ninth lens-side connection terminal Based on the signal, the third asynchronous signal output from the tenth lens side connection terminal, and the second clock signal input from the sixth lens side connection terminal, the seventh lens side connection terminal is used to An eleventh lens-side connection terminal supplied from the intermediate adapter with a second voltage lower than the first voltage for transmitting the third data signal to the intermediate adapter; A twelfth lens-side connection terminal serving as a ground terminal corresponding to a voltage, and at least two of the twelve lens-side connection terminals in the circumferential direction around the mount center point are defined by the mount center The positional relationship is different from at least two of the twelve adapter-side connection terminals in the circumferential direction centering on the point.
The interchangeable lens according to claim 31, wherein an intermediate adapter having at least five adapter side connection terminals provided in the vicinity of the adapter side mount portion of the intermediate adapter is attached, and the mount portion having a mount center point; A lens-side connection terminal holding portion in which at least five lens-side connection terminals are arranged, each having a contact portion that is connected to each of the adapter-side connection terminals and contacts one of the adapter-side connection terminals, Five lens side connection terminals are a clock input lens side connection terminal to which a clock signal is input from the intermediate adapter, and a data input lens to which a first data signal is input from the intermediate adapter in synchronization with the clock signal. Side connection terminal and the side of the data output lens that outputs the second data signal to the intermediate adapter in synchronization with the clock signal A connection terminal, an asynchronous signal output lens side connection terminal that outputs an asynchronous signal not synchronized with the clock signal to the intermediate adapter, and the asynchronous signal output from the asynchronous signal output lens side connection terminal and the clock input lens side connection terminal The first data signal from the intermediate adapter using the data input lens side connection terminal and the data output lens side connection terminal to the intermediate adapter based on the clock signal input at The five lenses in the circumferential direction centered on the mount center point, the operating voltage for performing the transmission of the second data signal comprises a voltage supply lens side connection terminal supplied from the intermediate adapter The positional relationship between at least two of the side connection terminals is the front in the circumferential direction around the mount center point. Wherein different from the five least two positional relationship among the adapter side connection terminal.

  According to the present invention, two independent communication systems can perform good communication with each other.

It is the perspective view which showed the lens-interchangeable camera system to which this invention is applied. It is sectional drawing which showed the lens-interchangeable camera system to which this invention is applied. It is a schematic diagram which shows the connection aspect of each terminal from the camera body 100 to the interchangeable lens 200. FIG. FIG. 6 is a front view of the body-side mount unit 101. It is a front view of B mount part 301a. It is a front view of L mount part 301b. 4 is a front view of a lens side mount unit 201. FIG. It is a timing chart which shows the example of command data communication. It is a timing chart which shows the example of hotline communication. It is sectional drawing which showed the lens-interchangeable camera system to which this invention is applied. It is a schematic diagram which shows the connection aspect of each terminal from the camera body 100 to the interchangeable lens 200. FIG. It is a front view of B mount part 301a. It is a front view of B mount part 301a. It is a front view of B mount part 301a. It is the front view and sectional drawing of 8th body corresponding | compatible connection terminal XP8. It is the perspective view which showed the lens-interchangeable camera system to which this invention is applied. It is sectional drawing which showed the lens-interchangeable camera system to which this invention is applied. It is a schematic diagram which shows the connection aspect of each terminal from the camera body 100 to the interchangeable lens 200. FIG.

(First embodiment)
FIG. 1 is a perspective view showing an interchangeable lens type camera system to which the present invention is applied. FIG. 1 shows only devices and apparatuses according to the present invention, and illustration and description of other devices and apparatuses are omitted. The camera system 1 includes a camera body 100, an interchangeable lens 200, and an intermediate adapter 300 that is an accessory mounted between the camera body 100 and the interchangeable lens 200.

  The camera body 100 is provided with a body side mount portion 101 to which the intermediate adapter 300 is detachably attached. Twelve body-side connection terminals are held at a position in the vicinity of the body-side mount portion 101 (inner peripheral side of the body-side mount portion 101) while partially protruding toward the inner peripheral side of the body-side mount portion 101. A holding part (electrical connection part) 102 is provided.

  Further, the interchangeable lens 200 is provided with a lens side mount portion 201 to which the intermediate adapter 300 is detachably attached. In the vicinity of the lens side mount unit 201 (inner peripheral side of the lens side mount unit 201), 12 lens side connection terminals are held in a state of partially protruding to the inner peripheral side of the lens side mount unit 201. A holding part (electrical connection part) 202 is provided.

  The intermediate adapter 300 has a cylindrical casing, and a body-corresponding mount portion 301a (hereinafter referred to as a B mount portion 301a) is provided on one bottom surface, and a lens-corresponding mount portion 301b (hereinafter referred to as “mounting portion”) is provided on the other bottom surface. L mount portions 301b) are provided. The B mount portion 301a corresponds to the body side mount portion 101, and the camera body 100 can be detachably attached. Similarly, the L mount portion 301b corresponds to the lens side mount portion 201, and the interchangeable lens 200 can be detachably attached. The shape of the intermediate adapter 300 is not limited to a cylinder.

  In the vicinity of the B mount portion 301a (inner peripheral side of the B mount portion 301a), the body corresponding to the body that holds the twelve body corresponding connection terminals while partially protruding to the inner peripheral side of the B mount portion 301a. A connection terminal holding portion 302a (hereinafter referred to as B holding portion 302a) is provided. In addition, 12 lens-corresponding connection terminals are held at a position in the vicinity of the L mount portion 301b (the inner peripheral side of the L mount portion 301b) while partially protruding toward the inner peripheral side of the L mount portion 301b. A lens-compatible connection terminal holding portion 302b (hereinafter referred to as an L holding portion 302b) is provided.

  When the camera body 100 is attached to the intermediate adapter 300, the plurality of body-side connection terminals provided in the holding unit 102 are electrically and physically connected to the plurality of body-corresponding connection terminals provided in the B holding unit 302a. Connected. Further, when the interchangeable lens 200 is attached to the intermediate adapter 300, a plurality of lens side connection terminals provided in the holding unit 202 provided with a plurality of lens side connection terminals are provided in the L holding unit 302b. Electrically and physically connected to a plurality of lens side connection terminals. These terminals are used for power supply from the camera body 100 to the interchangeable lens 200 via the intermediate adapter 300 and transmission / reception of signals between the camera body 100 and the interchangeable lens 200 via the intermediate adapter 300. Details of the holding unit 102, the holding unit 202, the B holding unit 302a, and the L holding unit 302b will be described later.

  An image sensor 104 is provided behind the body-side mount 101 in the camera body 100. Above the camera body 100, a button 105 serving as an input device is provided. The user uses the input device such as the button 105 to instruct the camera body 100 to take a picture, set shooting conditions, and the like.

  FIG. 2 is a cross-sectional view showing an interchangeable lens type camera system to which the present invention is applied. The interchangeable lens 200 includes an imaging optical system 210 that forms a subject image. The imaging optical system 210 includes a plurality of lenses 210a to 210c. The plurality of lenses 210a to 210c includes a focusing lens 210b for controlling the focus position of the subject image.

  Inside the interchangeable lens 200, a lens control unit 203 that controls each part of the interchangeable lens 200 is provided. The lens control unit 203 includes a microcomputer (not shown) and its peripheral circuits. The lens control unit 203 is connected to the lens side first communication unit 217, the lens side second communication unit 218, the lens driving unit 212, the lens position detection unit 213, the ROM 215, and the RAM 216.

  The first lens-side communication unit 217 and the second lens-side communication unit 218 exchange data with the camera body 100 via a lens-side connection terminal provided in the holding unit 102. Each of the lens side first communication unit 217 and the lens side second communication unit 218 is a communication interface on the interchangeable lens side. The lens control unit 203 performs communication (hotline communication, command data communication) described later with the camera body 100 (body control unit 103 described later) using these communication interfaces.

  The lens driving unit 212 includes an actuator such as a stepping motor, for example, and drives the focusing lens 210b in accordance with a signal input to the lens driving unit 212. The lens position detection unit 213 detects the position of the focusing lens 210b by counting the number of pulses of a signal input to a stepping motor included in the lens driving unit 212, for example. Alternatively, the position of the focusing lens 210b may be detected using a known distance encoder or the like provided in the interchangeable lens 200.

  In addition, a driven member other than the focusing lens 210b may be provided in the interchangeable lens 200. For example, similarly to the focusing lens 210b, a mechanism (power zoom mechanism) that includes a zoom lens as a member that can move in the optical axis direction of the interchangeable lens (imaging optical system 210) and electrically drives the zoom lens. Alternatively, it may be provided in the interchangeable lens 200. In addition, it includes a blur correction lens that can move in a moving direction including a component (X, Y direction component) in a direction perpendicular to the optical axis direction of the imaging optical system 210, and driving the blur correction lens reduces image blur. A blur correction mechanism that performs correction may be provided in the interchangeable lens 200. In addition, an interchangeable lens driving mechanism that controls driving of a diaphragm member (aperture blade) that can move so as to change the size of a diaphragm aperture through which the subject light flux passes may be provided in the interchangeable lens 200. When such a driven member is provided, the lens control unit 203 uses the lens driving unit 212 and the lens position detection unit 213 to drive and position the shake correction lens, the diaphragm member, and the zoom lens. Control detection.

  The ROM 215 is a non-volatile storage medium, and stores a predetermined control program executed by the lens control unit 203 in advance. The RAM 216 is a volatile storage medium and is used as a storage area for various data by the lens control unit 203.

  Inside the intermediate adapter 300, a lens 310 is provided on the same optical axis as the optical axis AX of the imaging optical system 210. The lens 310 is an optical member that emits subject light that has passed through the imaging optical system 210 of the interchangeable lens 200 to the camera body 100. Due to the lens 310, the focal length of the imaging optical system 210 is increased by a predetermined ratio compared to the case where the lens 310 is not provided. That is, the intermediate adapter 300 of this embodiment is a so-called teleconversion lens. The lens 310 may not be provided. When the lens 310 is not provided, the intermediate adapter 300 is a general adapter.

  A shutter 115 for controlling the exposure state of the image sensor 104 and an optical filter 116 combining an optical low-pass filter and an infrared cut filter are provided on the front surface of the image sensor 104. The subject light that has passed through the imaging optical system 210 enters the image sensor 104 via the shutter 115 and the filter 116.

  Inside the camera body 100, a body control unit 103 that controls each part of the camera body 100 is provided. The body control unit 103 includes a microcomputer (not shown), a RAM, and peripheral circuits thereof.

  A body-side first communication unit 117 and a body-side second communication unit 118 are connected to the body control unit 103. The body side first communication unit 117 is connected to the holding unit 102 and can exchange data with the lens side first communication unit 217. Similarly, the body side second communication unit 118 can exchange data with the lens side second communication unit 218. In other words, each of the body-side first communication unit 117 and the body-side second communication unit 118 is a body-side communication interface. The body control unit 103 performs communication (hotline communication and command data communication) described later with the interchangeable lens 200 (lens control unit 203) using these communication interfaces.

  A display device 111 configured by an LCD panel or the like is disposed on the back surface of the camera body 100. The body control unit 103 displays various menu screens for setting an image of a subject (a so-called through image) based on the output of the image sensor 104, shooting conditions, and the like on the display device 111.

(Description of holding part)
FIG. 3 is a schematic diagram illustrating a connection mode of each terminal from the camera body 100 to the interchangeable lens 200. As shown in FIG. 3, twelve body side connection terminals BP <b> 1 to BP <b> 12 exist in the holding portion 102 of the camera body 100. The B holding portion 302a of the intermediate adapter 300 includes twelve body corresponding connection terminals XP1 to XP12 corresponding to the twelve body side connection terminals BP1 to BP12, respectively.

  In the L holding portion 302b of the intermediate adapter 300, there are twelve lens-compatible connection terminals YP1 to YP12. The twelve lens-corresponding connection terminals YP1 to YP12 provided in the L holding portion 302b are respectively connected to the twelve body corresponding connection terminals XP1 to XP12 provided in the B holding portion 302a. In addition, the holding unit 202 of the interchangeable lens 200 includes twelve lens side connection terminals LP1 to LP12 corresponding to the twelve lens corresponding connection terminals YP1 to YP12, respectively.

  The eleventh body side connection terminal BP11 and the twelfth body side connection terminal BP12 are connected to the first power supply circuit 130 in the camera body 100. The first power supply circuit 130 supplies the operating voltage of each part in the interchangeable lens 200 excluding the lens driving part 212 to the eleventh body side connection terminal BP11. That is, from the eleventh body side connection terminal BP11 and the eleventh lens side connection terminal LP11, each part in the interchangeable lens 200 excluding the lens driving unit 212 (including the lens side first communication unit 217 and the lens side second communication unit 218). ) Operating voltage is supplied. The voltage value that can be supplied to the eleventh body side connection terminal BP11 has a range between the minimum voltage value and the maximum voltage value (for example, a voltage width in the 3V range), but the voltage value that is normally supplied is the maximum voltage value. This is a voltage value in the vicinity of an intermediate value between the value and the minimum voltage value. As a result, the current value supplied from the camera body 100 side to the interchangeable lens 200 side is a current value within a range of about several tens of mA to several hundreds of mA in the power-on state.

  The twelfth body side connection terminal BP12 is a ground terminal corresponding to the operating voltage given to the eleventh body side connection terminal BP11. That is, the twelfth body side connection terminal BP12 and the twelfth lens side connection terminal LP12 are ground terminals corresponding to the above operating voltage.

  In the following description, the signal line constituted by the eleventh body side connection terminal BP11 and the eleventh lens side connection terminal LP11 is referred to as a signal line V33. A signal line formed by the twelfth body side connection terminal BP12 and the twelfth lens side connection terminal LP12 is referred to as a signal line GND. The eleventh lens side connection terminal LP11, the twelfth lens side connection terminal LP12, the eleventh body side connection terminal BP11, and the twelfth body side connection terminal BP12 are for supplying power from the camera body 100 side to the interchangeable lens 200 side. Configure the power supply system terminals.

  The third body side connection terminal BP3, the fourth body side connection terminal BP4, the fifth body side connection terminal BP5, and the eighth body side connection terminal BP8 are connected to the body side first communication unit 117. The third lens side connection terminal LP3, the fourth lens side connection terminal LP4, the fifth lens side connection terminal LP5, and the eighth lens side connection terminal LP8 on the interchangeable lens 200 side corresponding to these body side connection terminals are on the lens side. The first communication unit 217 is connected. The body side first communication unit 117 and the lens side first communication unit 217 transmit and receive data to and from each other using these terminals (communication system terminals). The contents of communication performed by the body-side first communication unit 117 and the lens-side first communication unit 217 will be described in detail later.

  In the following description, a signal line constituted by the third body side connection terminal BP3 and the third lens side connection terminal LP3 is referred to as a signal line CLK. Similarly, a signal line constituted by the fourth body side connection terminal BP4 and the fourth lens side connection terminal LP4 is a signal line BDAT, and a signal constituted by the fifth body side connection terminal BP5 and the fifth lens side connection terminal LP5. The signal line LDAT and the signal line constituted by the eighth body side connection terminal BP8 and the eighth lens side connection terminal LP8 are referred to as a signal line RDY.

  The ninth body side connection terminal BP9, the tenth body side connection terminal BP10, the sixth body side connection terminal BP6, and the seventh body side connection terminal BP7 are connected to the body side second communication unit 118. The ninth lens side connection terminal LP9, the tenth lens side connection terminal LP10, the sixth lens side connection terminal LP6, and the seventh lens side connection terminal LP7 on the interchangeable lens 200 side corresponding to these body side connection terminals are on the lens side. The second communication unit 218 is connected. The lens-side second communication unit 218 transmits data to the body-side second communication unit 118 using these terminals (communication system terminals). The contents of communication performed by the body-side second communication unit 118 and the lens-side second communication unit 218 will be described in detail later.

  In the following description, the signal line constituted by the ninth body side connection terminal BP9 and the ninth lens side connection terminal LP9 is referred to as a signal line HREQ. Similarly, a signal line constituted by the tenth body side connection terminal BP10 and the tenth lens side connection terminal LP10 is a signal line HANS, and a signal line constituted by the sixth body side connection terminal BP6 and the sixth lens side connection terminal LP6. The signal line HCLK and the signal line constituted by the seventh body side connection terminal BP7 and the seventh lens side connection terminal LP7 are referred to as a signal line HDAT.

  The first body side connection terminal BP1 and the second body side connection BP2 are connected to the second power supply circuit 140 in the camera body 100. The second power supply circuit 140 supplies the driving voltage of the lens driving unit 212 to the first body side connection terminal BP1. That is, the driving voltage of the lens driving unit 212 is supplied from the first body side connection terminal BP1 and the first lens side connection terminal LP1. The voltage value that can be supplied to the first body side connection terminal BP1 has a range from the minimum voltage value to the maximum voltage value, all of which are voltage values that can be supplied to the eleventh body side connection terminal BP11. The voltage value is larger than the range (for example, the maximum voltage value that can be supplied to the first body side connection terminal BP1 is several times the maximum voltage value that can be supplied to the eleventh body side connection terminal BP11). That is, the voltage value supplied to the first body side connection terminal BP1 is a voltage value whose magnitude is different from the voltage value supplied to the eleventh body side connection terminal BP11. The voltage value that is normally supplied to the first body side connection terminal BP1 is a voltage value in the vicinity of an intermediate value between the maximum voltage value and the minimum voltage value that can be supplied to the first body side connection terminal BP1. Thus, the current supplied from the camera body 100 side to the interchangeable lens 200 side has a current value of about 10 mA to several A in the power-on state.

  The second body side connection terminal BP2 is a ground terminal corresponding to the drive voltage given to the first body side connection terminal BP1. That is, the second body side connection terminal BP2 and the second lens side connection terminal LP2 are ground terminals corresponding to the drive voltage.

  In the following description, the signal line constituted by the first body side connection terminal BP1 and the first lens side connection terminal LP1 is referred to as a signal line BAT. A signal line formed by the second body side connection terminal BP2 and the second lens side connection terminal LP2 is referred to as a signal line PGND. That is, the first body side connection terminal BP1, the first lens side connection terminal LP1, the second body side connection terminal BP2, and the second lens side connection terminal LP2 are for supplying power from the camera body 100 side to the interchangeable lens 200 side. This constitutes the power supply system terminal.

  The voltage value (current value) supplied to the first body side connection terminal BP1 and the first lens side connection terminal LP1 and the eleventh body side connection terminal BP11 and the eleventh lens side connection terminal LP11 are supplied. As is clear from the magnitude relationship with the voltage value (current value), the currents flowing through the second body side connection terminal BP2 and the second lens side connection terminal LP2 that serve as ground terminals for the voltages supplied to these terminals are respectively shown. The difference between the maximum value and the minimum value is larger than the difference between the maximum value and the minimum value of the current flowing through the twelfth body side connection terminal BP12 and the twelfth lens side connection terminal LP12. This is because the power consumed by the lens driving unit 212 having a driving system such as an actuator is larger than that of an electronic circuit such as the lens control unit 203 in the interchangeable lens 200, and it is not necessary to drive the focusing lens 210b. In some cases, the lens driving unit 212 does not consume power.

  FIG. 4 is a front view of the body-side mount unit 101. 4A is a view of the body-side mount portion 101 of the camera body 100 as viewed from the intermediate adapter 300 side, and FIG. 4B is an enlarged view of the holding portion 102 in FIG. 4A. . 5 is a front view of the B mount portion 301a of the intermediate adapter 300 corresponding to the body side mount portion 101 shown in FIG. FIG. 5A shows a state where the B mount portion 301a is viewed from the camera body 100 side, and FIG. 5B shows a state where the B holding portion 302a is enlarged in FIG. 5A. . Each mount portion has a circular shape, and in the following description, the center of the circle (the position of the optical axis AX) is referred to as a mount center point O1.

  As shown in FIG. 4A, the holding portion 102 is disposed in a place (the back side of the paper surface in FIG. 4A) that is deeper than the mount surface of the body-side mount portion 101. Further, as shown in FIG. 5A, a B holding portion 302a is arranged at a location protruding from the mounting surface of the B mount portion 301a (the front side in FIG. 5A). When the mount surface of the body side mount unit 101 and the mount surface of the B mount unit 301a are brought into contact with each other and the camera body 100 and the intermediate adapter 300 are coupled, the holding unit 102 and the B holding unit 302a are connected, and both holding units are connected. 12 body side connection terminals BP1 to BP12 and 12 body corresponding connection terminals XP1 to XP12 are connected to each other.

  4 and 5, the alternate long and short dash lines drawn on the twelve body-side connection terminals BP1 to BP12 and the twelve body corresponding connection terminals XP1 to XP12 are connected to the camera body 100 and the intermediate adapter 300. The locus | trajectory of 12 body side connection terminals BP1-BP12 at the time of a coupling | bonding is represented. As indicated by this alternate long and short dash line, the twelve body side connection terminals BP1 to BP12 move on the circumference around the mount center point O1 at the time of the coupling. Since such a mount structure is well known, further explanation is omitted.

  As shown in FIG. 4A, each of the twelve body side connection terminals BP1 to BP12 has a cylindrical shape, and the body side mount portion 101 is provided by a spring or the like provided inside the holding portion 102. Is biased in the front direction (the direction of the intermediate adapter 300). Further, as shown in FIG. 5A, each of the twelve body corresponding connection terminals XP1 to XP12 has a shape in which a substantially rectangular conductor is exposed on the surface of the B holding portion 302a. When the holding portion 102 is connected to the B holding portion 302a, each body side connection terminal is pressed against each body corresponding connection terminal by the above urging, and the body corresponding connection terminal and the body side connection terminal are electrically connected. . In FIG. 5A and FIG. 5B, the circles drawn so as to overlap the twelve body corresponding connection terminals XP1 to XP12 are circles indicating the pressing positions of the corresponding body side connection terminals.

  In the following description, for each of the twelve body-corresponding connection terminals XP1 to XP12, an area (in FIG. 5A) that contacts the body-side connection terminal when the camera body 100 and the intermediate adapter 300 are combined in the entire connection terminal. A region indicated by a circle) is referred to as a contact portion of the body corresponding connection terminal. Here, the time of coupling means the time when the lens side connection terminal LP11 is supplied with a voltage from the eleventh body side connection terminal BP11. In the present embodiment, the body-corresponding connection terminal is not only a substantially rectangular region (including a contact portion) exposed on the surface of the B holding portion 302a shown by hatching in FIG. This is a name including electric wiring (lead wire, flexible cable, etc.) for connecting the region and the lens-compatible connecting terminal. In addition, the region exposed on the surface of the holding portion 302a shown by hatching as described above may be hereinafter referred to as the exposed region of the body corresponding connection terminals XP1 to XP12. In the following description, “the central portion of the body-corresponding connection terminal” refers to the center of the exposed region of the body-corresponding connection terminal, as illustrated by a black dot in FIG. The exposed area will be described later in detail with reference to FIG.

  As shown in FIG. 5A, in the B holding portion 302a of the B mount portion 301a, twelve body-corresponding connection terminals XP1 to XP12 (exposed regions thereof) are in a direction along the B mount portion 301a (appearance shape). Are arranged in an arc shape (arc shape) with the mount center point O1 as the center in the arc direction along a part of the substantially circular B mount portion 301a.

  In the present embodiment, these twelve body-corresponding connection terminals XP1 to XP12 (exposed regions thereof) are arranged so that their contact portions are equally spaced, and arcs (mount center point O1 and first body-corresponding connection terminals) The angle θ11 of the center of XP1 (exposed area) and the sector of the eleventh body corresponding connection terminal XP11 (exposed area) is about 105 degrees, and the arc angle θ0 between the contact portions is about 9 respectively. .5 degrees. In the present embodiment, the width of each of the twelve body corresponding connection terminals XP1 to XP12 in the arc direction is about 1.5 mm. Further, since the distance from the mount center point O1 to the center of the contact portion of each body corresponding connection terminal XP1 to XP12 is about 15 mm, the distance in the arc direction between the centers of each body corresponding connection terminal XP1 to XP12 is about 2.5 mm. It becomes. Since the width in the arc direction of each body corresponding connection terminal XP1 to XP12 is about 1 mm, the clearance in the arc direction between each body corresponding connection terminal XP1 to XP12 is about 1 mm.

  Note that the widths and clearances of the body-corresponding connection terminals XP1 to XP12 (exposed regions) can be changed as appropriate. For example, the width in the arc direction of each of the body corresponding connection terminals XP1 to XP12 may be increased or decreased in units of 1/10 mm (comma number of millimeters), and the width of the clearance in the arc direction is also reduced to 1/10 mm accordingly. It can be appropriately changed in units (comma number millimeter unit, for example, plus or minus 0.2 mm).

  Hereinafter, the positional relationship between the twelve body-corresponding connection terminals XP1 to XP12 (exposed regions thereof) will be described with reference to FIG. The internal angle θ11 formed by the contact portion of the first body corresponding connection terminal XP1 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is arbitrarily selected from the twelve body corresponding connection terminals XP1 to XP12. Further, the contact portion between the two body-corresponding connection terminals is the largest inside angle formed with respect to the mount center point O1.

  The internal angle θ1 formed by the contact portion of the eleventh body corresponding connection terminal XP11 and the contact portion of the twelfth body corresponding connection terminal XP12 with respect to the mount center point O1 is from the first body corresponding connection terminal XP1 to the tenth body corresponding connection terminal XP10. The contact part of any one of the body-corresponding connection terminals and the contact part of the eleventh body-corresponding connection terminal XP11 are smaller than the inner angles θ2 to θ11 formed with respect to the mount center point O1. The internal angle θ2 formed by the contact portion of the third body corresponding connection terminal XP3 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is the first body corresponding connection terminal XP1 and the second body corresponding connection terminal XP2. , And the contact portion of any one of the fourth body corresponding connection terminal XP4 to the tenth body corresponding connection terminal XP10 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1. The inner angles formed are smaller than θ3 to θ11.

  The internal angle θ3 formed by the contact portion of the fourth body corresponding connection terminal XP4 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is the first body corresponding connection terminal XP1 and the second body corresponding connection terminal XP2. , And the contact portion of any one of the body-corresponding connection terminals XP5 to the tenth body-corresponding connection terminal XP10 and the contact portion of the eleventh body-corresponding connection terminal XP11 with respect to the mount center point O1. It is smaller than the inner angles θ4 to θ11 formed. The internal angle θ4 formed by the contact portion of the fifth body corresponding connection terminal XP5 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is the first body corresponding connection terminal XP1 and the second body corresponding connection terminal XP2. , And the contact portion of any one of the sixth body corresponding connection terminals XP6 to the tenth body corresponding connection terminal XP10 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1. The inner angle formed is smaller than θ5 to θ11.

  The internal angle θ5 formed by the contact portion of the eighth body corresponding connection terminal XP8 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is the first body corresponding connection terminal XP1 and the second body corresponding connection terminal XP2. The contact portion of any one of the body-corresponding connection terminals XP6, the sixth body-corresponding connection terminal XP6, the seventh body-corresponding connection terminal XP7, the ninth body-corresponding connection terminal XP10, and the eleventh body-corresponding member The contact portion of the connection terminal XP11 is smaller than the inner angles θ6 to θ11 formed with respect to the mount center point O1. The internal angle θ6 formed by the contact portion of the ninth body corresponding connection terminal XP9 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is the first body corresponding connection terminal XP1 and the second body corresponding connection terminal XP2. The contact part of the body corresponding connection terminal of any of the sixth body corresponding connection terminal XP6, the seventh body corresponding connection terminal XP7, and the tenth body corresponding connection terminal XP10 and the contact part of the eleventh body corresponding connection terminal XP11 are mounted. It is smaller than the internal angles θ7 to θ11 formed with respect to the center point O1.

  The internal angle θ7 formed by the contact portion of the tenth body corresponding connection terminal XP10 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is the first body corresponding connection terminal XP1 and the second body corresponding connection terminal XP2. The contact portion of any one of the sixth body corresponding connection terminal XP6 and the seventh body corresponding connection terminal XP7 and the contact portion of the eleventh body corresponding connection terminal XP11 are in relation to the mount center point O1. It is smaller than the inner angles θ8 to θ11 formed. The internal angle θ8 formed by the contact portion of the sixth body corresponding connection terminal XP6 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is the first body corresponding connection terminal XP1 and the second body corresponding connection terminal XP2. And the contact portion of any one of the seventh body corresponding connection terminals XP7 and the contact portion of the eleventh body corresponding connection terminal XP11 are smaller than the inner angles θ9 to θ11 formed with respect to the mount center point O1.

  The internal angle θ9 formed by the contact portion of the seventh body corresponding connection terminal XP7 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 is the first body corresponding connection terminal XP1 and the second body corresponding connection terminal XP2. The contact portion of any one of the body-corresponding connection terminals and the contact portion of the eleventh body-corresponding connection terminal XP11 are smaller than inner angles θ10 and θ11 formed with respect to the mount center point O1. The internal angle θ10 formed by the contact portion of the second body corresponding connection terminal XP2 and the contact portion of the eleventh body corresponding connection terminal XP11 with respect to the mount center point O1 corresponds to the contact portion of the first body corresponding connection terminal XP1 and the eleventh body. The contact portion of the connection terminal XP11 is smaller than the internal angle θ11 formed with respect to the mount center point O1.

  The twelve body-corresponding connection terminals XP1 to XP12 (exposed areas thereof) are arranged in the B holding portion 302a in the positional relationship as described above. Note that the power supply voltage (the operation voltage and the drive voltage described above) among the third body corresponding connection terminal XP3 to the tenth body corresponding connection terminal XP10 as the communication system terminals (communication system terminals) and the power supply system terminals are used. Between the first body corresponding connection terminal XP1 and the eleventh body corresponding connection terminal XP11 to be supplied, the second body corresponding connection terminal XP2 and the twelfth body corresponding connection terminal XP12 which are the ground terminals (ground terminals) are arranged. The reason is that the influence of the power supply system terminal (signal line) on the communication system terminal (signal line) is minimized.

  A signal line for supplying a power supply voltage to the interchangeable lens 200 (a signal line including the first body corresponding connection terminal XP1 and the eleventh body corresponding connection terminal XP11) undergoes a large voltage change according to a load variation at a power supply destination. Arise. This large voltage change may adversely affect the communication system signal lines. In order to suppress this adverse effect, in the present embodiment, a ground terminal (second body corresponding connection terminal) in which the voltage change is more stable than the power supply terminal (first body corresponding connection terminal XP1 or eleventh body corresponding connection terminal XP11). XP2 and the twelfth body corresponding connection terminal XP12), communication system terminals (third body corresponding connection terminal XP3 to tenth body corresponding connection terminal XP10) and power supply terminals (first body corresponding connection terminal XP1 and eleventh body corresponding connection terminal). XP11).

  The third body corresponding connection terminal XP3, the fourth body corresponding connection terminal XP4, the fifth body corresponding connection terminal XP5, and the eighth body corresponding connection terminal XP8 connected to the lens side first communication unit 217, the lens side second The ninth body corresponding connection terminal XP9, the tenth body corresponding connection terminal XP10, the sixth body corresponding connection terminal XP6, and the seventh body corresponding connection terminal XP7 connected to the communication unit 218 are arranged next to each other. The third body corresponding connection terminal XP3, the fourth body corresponding connection terminal XP4, and the fifth body corresponding connection terminal XP5 of the lens side first communication unit 217 and the sixth body corresponding connection terminal XP6 of the lens side second communication unit 218 and 7th body corresponding | compatible connection terminal XP7 arrange | positioned next to the terminal connected to a mutually different (other) communication part (217 or 218) It is configured so as not to. That is, the eighth body corresponding connection terminal XP8, the ninth body corresponding connection terminal XP9, and the tenth body corresponding connection terminal XP10 are collectively arranged at a position close to a terminal connected to a different (other) communication unit. ing. As will be described later, the eighth body corresponding connection terminal XP8, the ninth body corresponding connection terminal XP9, and the tenth body corresponding connection terminal XP10 have signals that are not synchronized with the clock signal (the clock signal and the signal synchronized therewith). This is because a signal having a relatively small change compared to the other, for example, a signal whose state change per unit time is about 1 kHz to several kHz is transmitted. In general, a clock signal and a signal synchronized with the clock signal have a significant change per unit time of about several MHz (as an example, the clock signal is 8 MHz, and the data signal synchronized with the clock signal is 4 MHz (depending on the amount of data)). It tends to be a noise source. Therefore, in order to minimize the influence on communication, it is desirable to arrange such terminals apart from terminals connected to different (other) communication units. Therefore, in the present embodiment, a terminal group (third body corresponding connection terminal XP3, fourth body corresponding connection terminal XP4, and fifth body corresponding connection) that transmits a clock signal and a signal synchronized therewith in the lens side first communication unit 217. The clock signal between the terminal XP5) and a terminal group (sixth body corresponding connection terminal XP6 and seventh body corresponding connection terminal XP7) that transmits a clock signal and a signal synchronized therewith in the lens side second communication unit 218. A terminal arrangement is employed in which a terminal group (an eighth body corresponding connection terminal XP8, a ninth body corresponding connection terminal XP9, and a tenth body corresponding connection terminal XP10) for transmitting signals that are not synchronized with each other is interposed.

  The ninth body corresponding connection terminal XP9, the tenth body corresponding connection terminal XP10, the sixth body corresponding connection terminal XP6, and the seventh body corresponding connection terminal XP7 are close to the second power supply circuit 140, the third body corresponding connection terminal XP3, The 4-body corresponding connection terminal XP4, the fifth body-corresponding connection terminal XP5, and the eighth body-corresponding connection terminal XP8 are arranged close to the first power supply circuit 130, respectively. This is because the body-corresponding connection terminals XP9, XP10, XP6, and XP7 are less affected by noise. The second power supply circuit 140 supplies power to the lens driving unit 212, but the power consumption of the lens driving unit 212 changes drastically between when the focusing lens 210b is driven and when it is not. Therefore, the magnitude of the current flowing through the second body corresponding connection terminal XP2 changes drastically, and the influence on the adjacent communication system terminal is larger than that of the twelfth body corresponding connection terminal XP12. However, as will be described later, the communication performed using the body corresponding connection terminals XP9, XP10, XP6, and XP7 has a shorter cycle than the communication performed using the body corresponding connection terminals XP3, XP4, XP5, and XP8. (The cycle of communication using the body corresponding connection terminals XP9, XP10, XP6, and XP7 is about 1/10 or less of the cycle of communication using the body corresponding connection terminals XP3, XP4, XP5, and XP8. However, in this embodiment, communication using the body corresponding connection terminals XP9, XP10, XP6, and XP7 is performed in a cycle of 1 msec, and communication using the body corresponding connection terminals XP3, XP4, XP5, and XP8 is performed in a cycle of 16 msec). Even if communication fails due to the influence of the connection terminal XP2 corresponding to the second body, promptly It is possible to restart the communication. In other words, the body-corresponding connection terminals XP9, XP10, XP6, and XP7 are more susceptible to noise than the body-corresponding connection terminals XP3, XP4, XP5, and XP8 even if they are arranged next to the second body-corresponding connection terminal XP2. It can be said that the influence is small.

  The second body corresponding connection terminal XP2 is arranged next to the seventh body corresponding connection terminal XP7. This is because the seventh body corresponding connection terminal XP7 is more resistant to noise than the sixth body corresponding connection terminal XP6. As will be described later, a clock signal is transmitted to the sixth body corresponding connection terminal XP6, and a data signal synchronized with this clock signal is transmitted to the seventh body corresponding connection terminal XP7. If the rising and falling edges of the clock signal become unclear due to the influence of noise, the receiving side cannot correctly synchronize. On the other hand, the data signal is sampled at the signal level at the rising or falling timing of the clock signal. Therefore, it is sufficient that the signal level becomes clear at the above timing, and it can be said that the resistance to noise is higher than that of the clock signal.

  Note that the twelve body side connection terminals BP1 to BP12 arranged in the holding unit 102 on the camera body 100 side shown in FIG. 4 are the same as the twelve body corresponding connection terminals XP1 to XP12 on the intermediate adapter side described above. Since there is, description is abbreviate | omitted. 1, 4, and 5, the body-side mount portion 101 has a so-called bayonet-type mount structure in which the body-side mount portion 101 is engaged with the B-mount portion 301 a of the intermediate adapter 300 after being rotated. It has become. For this reason, as shown in FIG. 4A and FIG. 5A, the arrangement direction of the body side connection terminals BP1 to BP12 is opposite to the arrangement direction (of the exposed region) of the body corresponding connection terminals XP1 to XP12. (In FIG. 5, the eleventh body corresponding connection terminal XP11 is arranged at the left end and the first body corresponding connection terminal XP1 is arranged at the right end, whereas in FIG. 4, the eleventh body side connection terminal BP11 is arranged. Is arranged at the right end, and the first body side connection terminal BP1 is arranged at the left end).

  FIG. 6 is a front view of the L mount portion 301b of the intermediate adapter 300 as viewed from the interchangeable lens 200 side. The L mount portion 301b has the same structure as the body side mount portion 101 of the camera body 100 described with reference to FIG. In other words, the L mount portion 301b has a circular shape, and the L holding portion 302b is disposed at a location deeper than the mount surface (in the depth direction in FIG. 6). As with the holding unit 102 of the camera body 100, 12 lens-corresponding connection terminals YP1 to YP12 are arranged in the L holding unit 302b, but the arrangement is different from the 12 body side connection terminals BP1 to BP12. ing.

  As schematically shown in FIG. 3, the wiring from the body corresponding connection terminals XP1 to XP12 is rearranged inside the intermediate adapter 300 and connected to the lens corresponding connection terminals YP1 to YP12 provided in the L holding portion 302b. Has been. For example, in FIG. 4, the first body side connection terminal BP1 is arranged at the left end, whereas in FIG. 6, the ninth lens corresponding connection terminal YP9 is arranged at the left end. The ninth lens corresponding connection terminal YP9 is a terminal electrically connected to the ninth body side connection terminal BP9. The description is omitted because it is the same as the body-side mount 101 except that the arrangement of the lens-compatible connection terminals is different.

  FIG. 7 is a front view of the lens-side mount portion 201 of the interchangeable lens 200 as viewed from the intermediate adapter 300 side. The lens side mount unit 201 has the same structure as the B mount unit 301a of the intermediate adapter 300 described in FIG. That is, the lens-side mount portion 201 has a circular shape, and the holding portion 202 is disposed at a location protruding from the mount surface (the front side in the drawing in FIG. 7). The holding unit 202 has twelve lens-side connection terminals LP1 to LP12 arranged in the same manner as the B holding unit 302a of the intermediate adapter 300, and the arrangement thereof is twelve as in the L holding unit 302b described above. It is different from the body corresponding connection terminals XP1 to XP12. In other words, the twelve lens-corresponding connection terminals YP1 to YP12 with respect to the mount center point O2 of the L mount portion 301b are in a relationship of twelve body corresponding connection terminals XP1 to XP1 with respect to the mount center point O1 of the B mount portion 301a. The positional relationship of XP12 is different. Since the arrangement of the lens side connection terminals is different from that of the B mount portion 301a, the description thereof is omitted.

  The twelve lens-corresponding connection terminals YP1 to YP12 each have a cylindrical shape, and the front direction of the L mount portion 301b (the direction of the interchangeable lens 200) by a spring or the like provided inside the L holding portion 302b. Is being energized. As shown in FIG. 7, each of the twelve lens side connection terminals LP <b> 1 to LP <b> 12 has a shape in which a substantially rectangular conductor is exposed on the surface of the holding portion 202. When the holding unit 202 is connected to the L holding unit 302b, each lens-corresponding connection terminal is pressed against each lens-side connection terminal by the above-described bias, and the lens-corresponding connection terminal and the lens-side connection terminal are electrically connected. . Hereinafter, the above-described region where the conductor exposed on the surface of the holding portion 202 is exposed may be referred to as an exposed region of the lens side connection terminals LP1 to LP12.

(Description of command data communication)
The lens control unit 203 controls the lens-side first communication unit 217 to perform the third lens-side connection terminal LP3, the fourth lens-side connection terminal LP4, the fifth lens-side connection terminal LP5, and the eighth lens-side connection terminal LP8. That is, in parallel with the reception of control data from the body side first communication unit 117 and the transmission of response data to the body side first communication unit 117 via the signal lines CLK, BDAT, LDAT, and RDY, The first predetermined cycle (in this embodiment, 16 milliseconds) is performed. Hereinafter, details of communication performed between the lens-side first communication unit 217 and the body-side first communication unit 117 will be described.

  In the present embodiment, communication performed between the lens control unit 203 and the lens-side first communication unit 217 and the body control unit 103 and the body-side first communication unit 117 is referred to as “command data communication”.

  FIG. 8 is a timing chart showing an example of command data communication. The body control unit 103 and the body-side first communication unit 117 first check the signal level of the signal line RDY at the start of command data communication (T1). The signal level of the signal line RDY indicates whether the lens-side first communication unit 217 can communicate. The lens control unit 203 and the lens side first communication unit 217 output a signal of H (High) level from the eighth lens side connection terminal LP8 when communication is not possible. That is, the signal level of the signal line RDY is set to H level. When the signal line RDY is at the H level, the body control unit 103 and the body-side first communication unit 117 do not start communication until the signal line RDY is at the L level. Also, the next processing during communication is not executed.

  When the signal line RDY is at L (Low) level, the body control unit 103 and the first body side communication unit 117 output the clock signal 401 from the third body side connection terminal BP3. That is, the clock signal 401 is transmitted to the first lens side communication unit 217 via the signal line CLK. In synchronization with the clock signal 401, the body control unit 103 and the body side first communication unit 117 output a body side command packet signal 402, which is the first half of the control data, from the fourth body side connection terminal BP4. That is, the body side command packet signal 402 is transmitted to the first lens side communication unit 217 via the signal line BDAT.

  In addition, when the clock signal 401 is output to the signal line CLK, the lens control unit 203 and the lens side first communication unit 217 synchronize with the clock signal 401 in the first half of the response data from the fifth lens side connection terminal LP5. A certain lens side command packet signal 403 is output. That is, the lens-side command packet signal 403 is transmitted to the first body-side communication unit 117 via the signal line LDAT.

  The lens control unit 203 and the lens side first communication unit 217 set the signal level of the signal line RDY to the H level in response to the completion of transmission of the lens side command packet signal 403 (T2). The lens control unit 203 starts a first control process 404 (described later) that is a process according to the content of the received body-side command packet signal 402.

  When the first control process 404 is completed, the lens control unit 203 notifies the lens side first communication unit 217 of the completion of the first control process 404. In response to this notification, the first lens side communication unit 217 outputs an L level signal from the eighth lens side connection terminal LP8. That is, the signal level of the signal line RDY is set to L level (T3). The body control unit 103 and the body side first communication unit 117 output the clock signal 405 from the third body side connection terminal BP3 in accordance with the change in the signal level. That is, the clock signal 405 is transmitted to the lens side first communication unit 217 via the signal line CLK.

  The body control unit 103 and the body side first communication unit 117 output the body side data packet signal 406 that is the latter half of the control data from the fourth body side connection terminal BP4 in synchronization with the clock signal 405. That is, the body side data packet signal 406 is transmitted to the lens side first communication unit 217 via the signal line BDAT.

  When the clock signal 405 is output to the signal line CLK, the lens control unit 203 and the lens side first communication unit 217 are the second half of the response data from the fifth lens side connection terminal LP5 in synchronization with the clock signal 405. The lens side data packet signal 407 is output. That is, the lens-side data packet signal 407 is transmitted to the first body-side communication unit 117 via the signal line LDAT.

  In response to the completion of transmission of the lens-side data packet signal 407, the lens control unit 203 and the lens-side first communication unit 217 set the signal level of the signal line RDY to the H level again (T4). The lens control unit 203 starts a second control process 408 (described later) that is a process according to the content of the received body-side data packet signal 406.

  Here, the first control process 404 and the second control process 408 performed by the lens control unit 203 will be described.

  For example, a case where the received body-side command packet signal 402 has a content requesting specific data on the interchangeable lens side will be described. As the first control process 404, the lens control unit 203 analyzes the content of the command packet signal 402 and executes a process of generating the requested specific data. Further, as the first control process 404, the lens control unit 203 uses the checksum data included in the command packet signal 402 to easily determine whether there is an error in the communication of the command packet signal 402 from the number of data bytes. The communication error check process to check is also executed. The specific data signal generated in the first control process 404 is output to the body side as a lens-side data packet signal 407. In this case, the body side data packet signal 406 output from the body side after the command packet signal 402 is a dummy data signal (including checksum data) that has no particular meaning for the lens side. In this case, the lens control unit 203 executes the communication error check process as described above using the checksum data included in the body side data packet signal 406 as the second control process 408.

  For example, a case where the received body-side command packet signal 402 is an instruction to drive a lens-side driven member will be described. For example, a case where the command packet signal 402 is an instruction to drive the focusing lens 210b and the received body side data packet signal 406 is the driving amount of the focusing lens 210b will be described. As the first control process 404, the lens control unit 203 analyzes the content of the command packet signal 402 and generates an acknowledgment signal indicating that the content has been understood. Furthermore, the lens control unit 203 also executes the communication error check process as described above using the checksum data included in the command packet signal 402 as the first control process 404. The acknowledge signal generated in the first control process 404 is output to the body side as a lens side data packet signal 407. In addition, as the second control process 408, the lens control unit 203 executes an analysis process of the contents of the body side data packet signal 406 and uses the checksum data included in the body side data packet signal 406 as described above. Execute the check process.

  When the second control process 408 is completed, the lens control unit 203 notifies the lens side first communication unit 217 of the completion of the second control process 408. Accordingly, the lens control unit 203 causes the lens side first communication unit 217 to output an L level signal from the contact LP6. That is, the signal level of the signal line RDY is set to L level (T5).

  If the received body-side command packet signal 402 is an instruction to drive a lens-side driven member (for example, a focusing lens) as described above, the lens control unit 203 sends a signal to the lens-side first communication unit 217. While the signal level of the line RDY is set to L level, the lens driving unit 212 is caused to execute processing for driving the focusing lens 210b by the driving amount.

  The communication performed at the above-described time T1 to time T5 is one command data communication. As described above, in one command data communication, body control unit 103 and body side first communication unit 117 transmit body side command packet signal 402 and body side data packet signal 406 one by one. In other words, the body side command packet signal 402 and the body side data packet signal 406 together constitute one control data although it is divided and transmitted for convenience of processing.

  Similarly, in one command data communication, the lens control unit 203 and the lens side first communication unit 217 transmit the lens side command packet signal 403 and the lens side data packet signal 407 one by one. That is, the lens side command packet signal 403 and the lens side data packet signal 407 are combined to form one response data.

  As described above, the lens control unit 203 and the lens-side first communication unit 217 perform reception of control data from the body-side first communication unit 117 and transmission of response data to the body-side first communication unit 117 in parallel. And do it. The eighth lens side connection terminal LP8 and the eighth body side connection terminal BP8 used for command data communication are asynchronous signals (signal level / H (High) level of the signal line RDY) or L ( (Low) level) is a contact to be transmitted.

(Description of hotline communication)
The lens control unit 203 controls the second lens side communication unit 218 to perform the ninth lens side connection terminal LP9, the tenth lens side connection terminal LP10, the sixth lens side connection terminal LP6, and the seventh lens side connection terminal LP7. That is, the lens position data is transmitted to the body-side second communication unit 118 via the signal lines HREQ, HANS, HCLK, and HDAT. Hereinafter, details of communication performed between the lens-side second communication unit 218 and the body-side second communication unit 118 will be described.

  In the present embodiment, communication performed between the lens control unit 203 and the lens-side second communication unit 218, and the body control unit 103 and the body-side second communication unit 118 is referred to as “hotline communication”.

  FIG. 9 is a timing chart illustrating an example of hotline communication. The body control unit 103 of the present embodiment is configured to start hot line communication every second predetermined period (for example, 1 millisecond in the present embodiment). This period is shorter than the period for performing command data communication. FIG. 9A is a diagram illustrating a state in which hotline communication is repeatedly performed at predetermined intervals Tn. FIG. 9B shows a state in which the period Tx of one communication among the hot line communications repeatedly executed is enlarged. Hereinafter, the procedure of hotline communication will be described based on the timing chart of FIG.

  The body control unit 103 and the body side second communication unit 118 first output an L level signal from the ninth body side connection terminal BP9 at the start of hot line communication (T6). That is, the signal level of the signal line HREQ is set to L level. The lens side second communication unit 218 notifies the lens control unit 203 that this signal has been input to the ninth lens side connection terminal LP9. In response to this notification, the lens control unit 203 starts executing a generation process 501 that generates lens position data. The generation process 501 is a process in which the lens control unit 203 causes the lens position detection unit 213 to detect the position of the focusing lens 210b and generates lens position data representing a detection result.

  When the lens control unit 203 completes the generation processing 501, the lens control unit 203 and the second lens side communication unit 218 output an L level signal from the tenth lens side connection terminal LP10 (T7). That is, the signal level of the signal line HANS is set to the L level. The body control unit 103 and the body side second communication unit 118 output the clock signal 502 from the sixth body side connection terminal BP6 in response to the input of this signal to the tenth body side connection terminal BP10. That is, a clock signal is transmitted to the lens side second communication unit 218 via the signal line HCLK.

  The lens control unit 203 and the lens side second communication unit 218 output a lens position data signal 503 representing lens position data from the seventh lens side connection terminal LP7 in synchronization with the clock signal 502. That is, the lens position data signal 503 is transmitted to the body-side second communication unit 118 via the signal line HDAT.

  When the transmission of the lens position data signal 503 is completed, the lens control unit 203 and the lens side second communication unit 218 output an H level signal from the tenth lens side connection terminal LP10. That is, the signal level of the signal line HANS is set to the H level (T8). The body side second communication unit 118 outputs an H level signal from the ninth lens side connection terminal LP9 in response to the input of this signal to the tenth body side connection terminal BP10. That is, the signal level of the signal line HREQ is set to H level (T9).

  The communication performed from time T6 to time T9 described above is one hot line communication. As described above, in one hot line communication, one lens position data signal 503 is transmitted by the lens control unit 203 and the second lens side communication unit 218. The ninth lens side connection terminal LP9, the tenth lens side connection terminal LP10, the ninth body side connection terminal BP9, and the tenth body side connection terminal BP10 used for hotline communication are asynchronous signals that are not synchronized with other clock signals. Is a contact to be transmitted. That is, the ninth lens side connection terminal LP9 and the ninth body side connection terminal BP9 are contact points for transmitting asynchronous signals (signal level / H (High) level or L (Low) level of the signal line HREQ). The 10 lens side connection terminal LP10 and the 10th body side connection terminal BP10 are terminals through which asynchronous signals (signal level HANS signal level / H (High) level or L (Low) level) are transmitted.

  Note that the command data communication and the hotline communication can be executed simultaneously or partially in parallel. That is, one of the lens side first communication unit 217 and the lens side second communication unit 218 can communicate with the camera body 100 even when the other is communicating with the camera body 100. is there.

According to the camera system according to the first embodiment described above, the following operational effects can be obtained.
(1) The intermediate adapter 300 includes a B mount portion 301a to which the camera body 100 having 12 body side connection terminals BP1 to BP12 is attached, and an L mount portion 301b to which the interchangeable lens 200 is attached. In the B holding portion 302a, 12 body corresponding connection terminals XP1 to XP12 (exposed areas) connected to each of the 12 body side connection terminals BP1 to BP12 of the camera body 100 are arranged. These twelve body-corresponding connection terminals XP1 to XP12 (exposed areas thereof) are arranged in the positional relationship shown in FIG. Thus, two independent communication systems can perform good communication with each other between the camera body 100 and the intermediate adapter 300.

(2) In the L holding portion 302b, twelve lens corresponding connection terminals YP1 to YP12 (exposed areas) connected to the twelve body corresponding connection terminals XP1 to XP12 (exposed areas) are arranged. Yes. These twelve lens-corresponding connection terminals YP1 to YP12 are respectively connected to twelve lens side connection terminals LP1 to LP12 provided in the vicinity of the lens side mount portion 201 of the interchangeable lens 200 attached to the L mount portion 301b. . As described above, when the interchangeable lens 200 is attached to the camera body 100 via the intermediate adapter 300, the camera body 100 can communicate with the interchangeable lens 200.

(3) The positional relationship between the 12 lens-corresponding connection terminals YP1 to YP12 (exposed areas thereof) with respect to the mount center point O2 of the L mount portion 301b corresponds to 12 bodies with respect to the mount center point O1 of the B mount portion 301a. The positional relationship of the connection terminals XP1 to XP12 (exposed areas thereof) is different. Since it did in this way, communication correspondence is possible with respect to lenses with different lens terminal arrays.

(4) The intermediate adapter 300 includes a lens 310 that emits subject light transmitted through the imaging optical system 210 of the interchangeable lens 200 to the camera body 100. Thus, by appropriately configuring the intermediate adapter 300, it is possible to change the optical characteristics of the photographing optical system without modifying the interchangeable lens 200.

(Second Embodiment)
FIG. 10 is a cross-sectional view showing a camera system according to the second embodiment of the present invention. This camera system 2 has a configuration in which the intermediate adapter 300 of the camera system 1 according to the first embodiment is replaced with an intermediate adapter 600 having an adapter-side first communication unit 617 and an adapter-side second communication unit 618. Yes. Hereinafter, the intermediate adapter 600 will be described. Since the camera body 100 and the interchangeable lens 200 are the same as those in the first embodiment, description thereof is omitted.

  FIG. 11 is a schematic diagram illustrating a connection mode of each terminal from the camera body 100 to the interchangeable lens 200. The intermediate adapter 600 of the present embodiment includes an adapter side first communication unit 617 and an adapter side second communication unit 618. Each of these communication units is connected so as to be interposed between each terminal on the camera body 100 side and each terminal on the interchangeable lens 200 side, and operates with electric power supplied from the camera body 100.

  The adapter side first communication unit 617 includes a third body corresponding connection terminal XP3, a fourth body corresponding connection terminal XP4, a fifth body corresponding connection terminal XP5, and an eighth body corresponding connection terminal XP8 provided in the B holding unit 302a. Connected to each. The adapter side first communication unit 617 performs the above-described command data communication with the body side first communication unit 117 of the camera body 100 via these four terminals.

  The adapter side first communication unit 617 further includes a third lens compatible connection terminal YP3, a fourth lens compatible connection terminal YP4, a fifth lens compatible connection terminal YP5, and an eighth lens compatible connection terminal YP8 provided in the L holding unit 302b. Connected to each. When the adapter-side first communication unit 617 performs command data communication with the body-side first communication unit 117 of the camera body 100, the adapter-side first communication unit 617 uses the four terminals to connect the interchangeable lens 200 to the lens-side first communication unit 117. The above-described command data communication is performed with one communication unit 217.

  That is, the adapter side first communication unit 617 performs command data communication with the body side first communication unit 117 like the lens side first communication unit 217 of the first embodiment, and receives data representing a predetermined control instruction. . An interchangeable lens is obtained by performing command data communication with the lens-side first communication unit 217 like the body-side first communication unit 117 of the first embodiment, which represents the same control instruction but is different from the data. 200. In other words, the adapter side first communication unit 617 intervenes in command data communication performed between the camera body 100 and the interchangeable lens 200, converts the command from the camera body 100 into data of a predetermined format, and exchanges it. Transmit to the lens 200.

  The adapter-side second communication unit 618 is the same as the adapter-side first communication unit 617, and thus the description thereof is omitted. That is, the adapter-side second communication unit 618 is interposed in the hot line communication performed between the camera body 100 and the interchangeable lens 200, converts the data from the interchangeable lens 200 into data of a predetermined format, and transmits it to the camera body 100. Send.

According to the camera system according to the second embodiment described above, the following operational effects can be obtained.
(1) The adapter side first communication unit 617 performs data communication with the body side first communication unit 117 of the camera body 100 by command data communication via the four body corresponding connection terminals XP3, XP4, XP5, XP8. . In response to receiving data representing a predetermined control instruction from the camera body 100 through this data communication, the adapter-side first communication unit 617 receives a command via the four lens-compatible connection terminals YP3, YP4, YP5, and YP8. By data communication, data communication is performed with the lens-side first communication unit 217 of the interchangeable lens 200, and data representing the control instruction and different from the data is transmitted to the interchangeable lens 200. Since it did in this way, the interchangeable lens 200 which requests | requires control data different from what the camera body 100 respond | corresponds can be utilized with the camera body 100.

(Third embodiment)
The camera system of the third embodiment to which the present invention is applied has a configuration similar to that of the camera system of the first embodiment, but is different from the first embodiment in the body corresponding connection terminals XP1 to XP12 and the lens. The surface shapes of the exposed regions of the side connection terminals LP1 to LP12 are different. Hereinafter, the surface shapes of the exposed regions of the body corresponding connection terminals XP1 to XP12 and the lens side connection terminals LP1 to LP12 in the third embodiment will be described. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

  FIG. 14 is a front view of the B mount portion 301a of the intermediate adapter 300 according to the third embodiment. As shown in FIG. 14A and FIG. 14B, in this embodiment, the twelve body-corresponding connection terminals XP1 to XP12 arranged in the B holding portion 302a of the B mount portion 301a are connected to the B holding portion 302a. And has a size covering from the inner circumference side (side near the mount center point O1) to the outer circumference side (side far from the mount center point O1). However, the size and position of the exposed region are the same as those of the first embodiment shown in FIGS. 5 (a) and 5 (b). Hereinafter, this point will be described with reference to a sectional view of the eighth body corresponding connection terminal XP8.

  FIG. 15A is an enlarged front view of the eighth body corresponding connection terminal XP8, and FIG. 15B is a cross-sectional view of the eighth body corresponding connection terminal XP8 and the B holding portion 302a. As shown in the cross-sectional view of FIG. 15B, one end of the metal piece 209 constituting the eighth body corresponding connection terminal XP8 enters a recess 208 provided on the surface of the B holding portion 302a. That is, the surface of the metal piece 209 is divided into an exposed region XP8a exposed on the surface of the B holding portion 302a and a fixing portion XP8b for fixing the metal piece 209 to the B holding portion 302a. When viewed from the surface as shown in FIG. 15A, the exposed area appears to be larger than that in FIG. 5, but the size of the exposed area XP8a does not actually change.

  The exposure area of the eighth body corresponding connection terminal XP8 in the present embodiment has been described above, but the other eleven body corresponding connection terminals and the twelve lens side connection terminals LP1 to LP12 are the eighth body corresponding connection terminals. Since it is the same as XP8, explanation is omitted. That is, the size and position of the exposed regions of the other 11 body-compatible connection terminals and the 12 lens side connection terminals LP1 to LP12 are the same as those shown in FIG. The region is a fixing part for fixing the metal piece to the holding part 202.

  Note that only one of the twelve body corresponding connection terminals XP1 to XP12 and the twelve lens side connection terminals LP1 to LP12 may have the shape shown in FIGS. Further, not all of the twelve body corresponding connection terminals XP1 to XP12 have such a shape, for example, only one body corresponding connection terminal XP1 may have such a shape, Two or three body-compatible connection terminals may have such a shape. The same applies to the lens side connection terminals LP1 to LP12. Further, although the size and position of the exposed region are the same as those in the first embodiment shown in FIGS. 5A and 5B, the size and position of the exposed region are the same. Not necessary.

  According to the camera system of the third embodiment described above, the same operational effects as those of the first embodiment can be obtained.

(Fourth embodiment)
FIG. 16 is a perspective view showing a camera system according to the fourth embodiment of the present invention. The camera system 4 includes an intermediate adapter 400 attached to the camera body 100, an intermediate adapter 300 attached to the intermediate adapter 400, and an interchangeable lens 200 that is an accessory attached to the intermediate adapter 300.

  The configurations of the camera body 100, the interchangeable lens 200, and the intermediate adapter 300 are the same as those in the first embodiment. That is, the camera system 4 has a configuration in which the camera body 100 of the camera system 1 according to the first embodiment is replaced with the camera body 100 and the intermediate adapter 400.

  The intermediate adapter 400 includes a first mount portion 401 a that fits the body-side mount portion 101 of the camera body 100 and a second mount portion 401 b that fits the B mount portion 301 a of the intermediate adapter 300. In the vicinity of the first mount portion 401a (inner peripheral side of the first mount portion 401a), twelve body-corresponding through connection terminals are provided so as to partially protrude toward the inner peripheral side of the first mount portion 401a. A body-corresponding through connection terminal holding portion 402a (hereinafter referred to as a BT holding portion 402a) is provided. In addition, in the vicinity of the second mount portion 401b (inner peripheral side of the second mount portion 401b), twelve lens-compatible through connections are provided in a state of partially protruding toward the inner peripheral side of the second mount portion 401b. A lens-compatible through-connection terminal holding unit 402b (hereinafter referred to as an LT holding unit 402b) that holds terminals is provided.

  When the camera body 100 is attached to the intermediate adapter 400, the plurality of body side connection terminals provided in the holding unit 102 are electrically and physically connected to the plurality of body corresponding through connection terminals provided in the BT holding unit 402a. Is done. When the intermediate adapter 300 is attached to the intermediate adapter 400, the plurality of lens-compatible through connection terminals provided in the LT holding unit 402b are electrically and physically connected to the plurality of body-compatible connection terminals provided in the B holding unit 302a. Connected.

  FIG. 17 is a cross-sectional view showing an interchangeable lens type camera system to which the present invention is applied. Inside the intermediate adapter 400, a lens 410 is provided on the same optical axis as the optical axis AX of the imaging optical system 210. Due to the lens 410, the focal length of the imaging optical system 210 is increased by a predetermined ratio compared to the case where the lens 410 is not provided. The lens 410 may not be provided. When the lens 410 is not provided, the intermediate adapter 400 is a general adapter.

  FIG. 18 is a schematic diagram illustrating a connection mode of each terminal from the camera body 100 to the interchangeable lens 200. As shown in FIG. 18, in the BT holding portion 402a of the intermediate adapter 400, there are twelve body corresponding through connection terminals CP1 to CP12 corresponding to the twelve body side connection terminals BP1 to BP12, respectively. The twelve body-corresponding through connection terminals CP1 to CP12 (exposed areas thereof) have the same positional relationship as the twelve body corresponding connection terminals XP1 to XP12 (exposed areas thereof) of the intermediate adapter 300 in the first embodiment. The BT holding unit 402a is provided. The LT holding portion 402b of the intermediate adapter 400 has twelve lens-corresponding through connection terminals DP1 to DP12 corresponding to the twelve body corresponding connection terminals XP1 to XP12, respectively.

  As shown in FIG. 18, the twelve body corresponding through connection terminals CP1 to CP12 and the twelve lens corresponding through connection terminals DP1 to DP12 are electrically connected inside the intermediate adapter 400, respectively. For example, the first body corresponding through connection terminal CP1 and the first lens corresponding through connection terminal DP1 are electrically connected. Also, the second body corresponding through connection terminal CP2 and the second lens corresponding through connection terminal DP2 are electrically connected. The same applies to the other body corresponding through connection terminals CP3 to CP12 and the lens corresponding through connection terminals DP3 to DP12.

  Accordingly, the electrical connection relationship between the twelve body side connection terminals BP1 to BP12 and the twelve body corresponding connection terminals XP1 to XP12 is different through the intermediate adapter 400, but the first embodiment It is the same as the form. For example, the body side connection terminal BP1 is electrically connected to the body corresponding connection terminal XP1 as in the first embodiment, and the body side connection terminal BP2 is corresponding to the body as in the first embodiment. It is electrically connected to the connection terminal XP2. The same applies to the other body side connection terminals BP3 to BP12 and the body corresponding connection terminals XP3 to XP12.

  As described above, the B mount portion 301a of the intermediate adapter 300 is adapted not only to the body side mount portion 101 of the camera body 100 but also to the second mount portion 401b of the intermediate adapter 400. That is, not only the camera body 100 but also the intermediate adapter 400 can be attached to the B mount portion 301a of the intermediate adapter 300.

  In other words, the B mount portion 301a of the intermediate adapter 300 is mounted with the intermediate adapter 400 having twelve lens-corresponding through connection terminals DP1 to DP12 provided in the vicinity of the second mount portion 401b of the intermediate adapter 400. It has a center point O1. In addition, twelve body-corresponding connection terminals XP1 to XP12 each having a contact portion that contacts one of the lens-corresponding through connection terminals DP1 to DP12 are arranged in the B holding portion 302a of the intermediate adapter 300.

  According to the camera system of the fourth embodiment described above, the same operational effects as those of the first embodiment can be obtained.

  The following modifications are also within the scope of the present invention, and one or a plurality of modifications can be combined with the above-described embodiment.

(Modification 1)
In the above-described embodiment, as shown in FIG. 5 and the like, a plurality of body-corresponding connection terminals are arranged along the upper and lower edges of the B holding portion 302a. The plurality of body-corresponding connection terminals may be arranged on the B holding portion 302a in other forms. Further, the plurality of body-corresponding connection terminals may be disposed at any position of the B holding portion 302a, and the shape of the B holding portion 302a is not limited to the shape shown in FIG. 5 and may be any shape.

(Modification 2)
In the above embodiment, the position data of the focusing lens 210b has been described as being transmitted from the interchangeable lens 200 to the camera body 100 by hotline communication. However, the system may be configured to transmit state information of driven members other than the focusing lens using hotline communication. For example, when the interchangeable lens 200 is provided with a shake correction lens for camera shake correction, the position (X, Y position) of the shake correction lens may be transmitted. In addition, the position of the stop in the interchangeable lens (information related to the stop aperture size) may be transmitted. If the interchangeable lens 200 is a zoom lens, information regarding the focal length of the lens may be transmitted. In such a case, as the generation processing 501 shown in FIG. 7B, processing for generating position data of the blur correction lens and control position data of the aperture for forming the aperture stop (position information corresponding to the aperture size) And a process of generating zoom lens position data.

(Modification 3)
In the above-described embodiment, the holding unit 102 (body side), the holding unit 202 (lens side), the B holding unit 302a, and the L holding unit 302b are each an integral component (one component). However, each of these holding portions may be configured to be integrally formed by combining a plurality of holding portion parts that are divided into several parts (for several terminals).

(Modification 4)
In the above-described embodiment, the communication interface is provided individually for each of the two communications (hotline communications and command data communications). However, these may be integrally formed. That is, on the interchangeable lens side, the lens side first communication unit 217 and the lens side second communication unit 218 may be integrally formed. Similarly, on the camera body side, the body-side first communication unit 117 and the body-side second communication unit 118 may be integrally formed. Further, instead of the body control unit 103 and the lens control unit 203, a body control unit and a lens control unit in which the functions of these communication interfaces are incorporated may be used.

(Modification 5)
In the second embodiment, the lens-side first communication unit 217 and the adapter-side first communication unit 617 perform data communication by command data communication. The data communication performed between these two communication units may be data communication according to a communication procedure (protocol) other than the command data communication described above. For example, the L holding unit 302b and the holding unit 202 may be provided with terminals of arrangement and wiring different from those shown in FIG. 11, and data communication based on those terminals may be performed. That is, the adapter-side first communication unit 617 plays a role of translating communication contents with the interchangeable lens 200 into communication contents suitable for the camera body 100. By configuring the intermediate adapter 600 in this manner, even an interchangeable lens that uses a communication procedure that is completely different from command data communication can be used together with the camera body 100. The same applies to the adapter-side second communication unit 618, and a data communication method other than hotline communication may be used.

(Modification 6)
In the first embodiment, the twelve body-corresponding connection terminals XP1 to XP12 provided on the B holding portion 302a are formed between the center portion (of the exposed region) of each terminal and the mount center point O1 of the B mount portion 301a. All the distances between them were arranged to be equal. This may be configured such that the distance between the center portion (of the exposed region) of the terminal and the mount center point O1 is different from that of the other body-corresponding connection terminals for at least one body-corresponding connection terminal. . For example, as shown in FIG. 12, twelve body-corresponding connection terminals XP1 to XP12 (exposed areas thereof) are arranged in a staggered arrangement, and a terminal having a long distance between the center portion of each body-corresponding connection terminal and the mount center point O1. There may be short terminals. The 12 body-corresponding connection terminals XP1 to XP12 (exposed areas thereof) have a sufficient size with respect to the 12 body side connection terminals BP1 to BP12 provided in the holding portion 102. Even in this case, each terminal of the holding unit 102 and each terminal of the B holding unit 302a can be reliably connected.

  Similarly, the twelve lens-corresponding connection terminals YP1 to YP12 (exposed areas thereof) provided on the L holding portion 302b are also mounted on the center part (exposed area) of the terminal and the mount of at least one lens-corresponding connecting terminal. You may comprise so that the distance between center point O2 may differ from other lens corresponding | compatible connection terminals. For example, a staggered arrangement may be used as described above.

(Modification 7)
In the first embodiment, it is not always necessary to arrange all the twelve body corresponding connection terminals XP1 to XP12 (exposed areas thereof) in the B holding portion 302a. For example, as shown in FIG. 13, only five body corresponding connection terminals XP3, XP4, XP5, XP8, and XP11 may be arranged. In other words, the body-corresponding connection terminals XP6, XP7, XP9, and XP10 used for hotline communication, the first body-corresponding connection terminal XP1 that supplies the driving voltage of the lens driving unit 212, and the second ground terminal thereof. The body-corresponding connection terminal XP2 and the twelfth body-corresponding connection terminal BP12 that is a ground terminal corresponding to the operating voltage of each part other than the lens driving unit 212 can be omitted. This is based on the following reasons.

  For example, let us consider a case where the interchangeable lens 200 attached to the L mount 301b is a so-called manual focus lens that does not support the automatic focus adjustment function. In such a case, the interchangeable lens 200 does not have the lens driving unit 212, and the focusing lens 210b is adjusted only by manual operation of the focus ring by the photographer. Therefore, the first body corresponding connection terminal XP1 that supplies the driving voltage of the lens driving unit 212 and the second body corresponding connection terminal XP2 that is the ground terminal are unnecessary, and the B holding unit 302a includes these body corresponding connection terminals. It doesn't have to be. Further, when the automatic focus adjustment function is not used, it is not necessary to transmit the position of the focusing lens 210b to the camera body 100 by hotline communication. Therefore, communication system terminals for the hotline communication (the ninth body corresponding connection terminal XP9, The tenth body corresponding connection terminal XP10, the sixth body corresponding connection terminal XP6, and the seventh body corresponding connection terminal XP7) are unnecessary, and the B holding portion 302a may not include these body corresponding connection terminals. Finally, the twelfth body corresponding connection terminal XP12 is unnecessary because it can also be used as the second body corresponding connection terminal XP2.

  Exactly the same is true for the L holding portion 302b. That is, it is not always necessary to arrange all twelve lens-corresponding connection terminals YP1 to YP12 in the L holding portion 302b. Only at least five lens corresponding connection terminals YP3, YP4, YP5, YP8, and YP11 may be arranged. In other words, the lens-corresponding connection terminals YP6, YP7, YP9, and YP10 used for hotline communication, the first lens-corresponding connection terminal YP1 that supplies the driving voltage of the lens driving unit 212, and the second ground terminal thereof. The lens-corresponding connection terminal YP2 and the twelfth lens-corresponding connection terminal YP12 that is a ground terminal corresponding to the operating voltage of each part other than the lens driving unit 212 can be omitted.

(Modification 8)
Although the camera system using the two intermediate adapters 300 and 400 has been described in the fourth embodiment, a larger number of intermediate adapters can be used. Further, the positional relationship between the intermediate adapters, the mount shape of each intermediate adapter, the arrangement of the connection terminals, the wiring between the connection terminals in the intermediate adapter, and the like are arbitrarily changed from those exemplified in the fourth embodiment. be able to.

  For example, an intermediate adapter 300 similar to that of the first embodiment is attached to the camera body 100, and an intermediate adapter (accessory) similar to the intermediate adapter 400 is attached between the intermediate adapter 300 and the interchangeable lens 200. May be. Further, the mount shape of the intermediate adapter 400 or the camera body 100 may be different from the mount shape of the intermediate adapter 300 or the interchangeable lens 200. That is, the intermediate adapter 300 or the intermediate adapter 400 may be an intermediate adapter for using the camera body 100 and the interchangeable lens 200 of different mount standards.

  Further, as described in the modification example 7, some of the connection terminals can be omitted, and the arrangement, wiring, position, and the like of the connection terminals can be changed.

  As long as the characteristics of the present invention are not impaired, the present invention is not limited to the above-described embodiments, and other forms conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention. .

DESCRIPTION OF SYMBOLS 1, 2 ... Camera system, 100 ... Camera body, 101 ... Body side mount part, 102, 202 ... Holding part, 103 ... Body control part, 117 ... Body side 1st communication part, 118 ... Body side 2nd communication part, DESCRIPTION OF SYMBOLS 200 ... Interchangeable lens, 201 ... Lens side mount part, 203 ... Lens control part, 210 ... Imaging optical system, 217 ... Lens side 1st communication part, 218 ... Lens side 2nd communication part, 300, 600 ... Intermediate adapter, 301a... Body compatible mount (B mount), 301b. Lens compatible mount (L mount), 302a. Body compatible connection terminal holder (B holder), 302b. Lens compatible connection terminal holder (L holder) ), 617... Adapter side first communication unit, 618... Adapter side second communication unit.

In the intermediate adapter according to claim 1, a camera body having twelve body side connection terminals provided in an arc shape is attached in the vicinity of the body side mount portion of the camera body, and a first mount center point is provided. 12 is connected to each of the twelve body-side connection terminals when the mount portion is coupled to the camera body, and each of the twelve body-side connection terminals includes a contact portion that contacts the corresponding body-side connection terminal. A body-corresponding connection terminal holding portion in which the body-corresponding connection terminals are arranged, and a second mount portion having a second mount center point to which the accessory can be attached and detached. A first body corresponding connection terminal to which a first voltage is supplied from the camera body; a second body corresponding connection terminal serving as a ground terminal corresponding to the first voltage; A third body corresponding connection terminal to which a first clock signal is input from a labody; a fourth body corresponding connection terminal to which a first data signal is input from the camera body in synchronization with the first clock signal; In synchronization with one clock signal, a fifth body corresponding connection terminal that outputs a second data signal to the camera body, a sixth body corresponding connection terminal that receives a second clock signal from the camera body, and the second A seventh body corresponding connection terminal that outputs a third data signal to the camera body in synchronization with a clock signal, and a first asynchronous signal that is not synchronized with the first clock signal and the second clock signal are output to the camera body. And a second asynchronous signal not synchronized with the first clock signal and the second clock signal from the camera body. The ninth body corresponding connection terminal, the tenth body corresponding connection terminal for outputting a third asynchronous signal not synchronized with the first clock signal and the second clock signal to the camera body, and the eighth body corresponding connection. Based on the first asynchronous signal output from the terminal and the first clock signal input at the third body corresponding connection terminal, the first data signal from the camera body using the fourth body corresponding connection terminal And transmitting the second data signal to the camera body using the fifth body corresponding connection terminal, and the second asynchronous signal input at the ninth body corresponding connection terminal, Based on the third asynchronous signal output from the tenth body corresponding connection terminal and the second clock signal input from the sixth body corresponding connection terminal. The eleventh body-corresponding connection in which a second voltage smaller than the first voltage for transmitting the third data signal to the camera body using the seventh body-corresponding connection terminal is supplied from the camera body. A contact terminal of the twelfth body serving as a ground terminal corresponding to the second voltage, and the contact part of the connection terminal corresponding to the first body and the contact part of the connection terminal corresponding to the eleventh body are The interior angle formed with respect to the first mount center point is the interior angle formed by the contact portions of the two body-corresponding connection terminals arbitrarily selected from the 12 body-corresponding connection terminals with respect to the first mount center point. The inner angle formed by the contact portion of the eleventh body corresponding connection terminal and the contact portion of the twelfth body corresponding connection terminal with respect to the first mount center point is the first body. The contact portion of any one of the connection terminal to the tenth body connection terminal and the contact portion of the eleventh body connection terminal is smaller than an inner angle formed with respect to the first mount center point, The inner angle formed by the contact portion of the connection terminal corresponding to 3 bodies and the contact portion of the connection terminal corresponding to the eleventh body with respect to the first mount center point is the connection corresponding to the first body and the connection corresponding to the second body. Any one of the terminal and the fourth body corresponding connection terminal to the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point An inner angle formed by the contact portion of the fourth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is smaller than an inner angle formed. Of the first body corresponding connection terminal, the second body corresponding connection terminal, and the fifth body corresponding connection terminal to any one of the tenth body corresponding connection terminal and the eleventh body corresponding connection terminal. The contact portion is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the fifth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are the first mount center point. The inner angle formed with respect to the first body corresponding connection terminal, the second body corresponding connection terminal, and the sixth body corresponding connection terminal to the tenth body corresponding connection terminal, The contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the eighth body corresponding connection terminal and the first The internal angle formed by the contact portion of the 1-body connection terminal with respect to the first mount center point is the first body-compatible connection terminal, the second body-compatible connection terminal, the sixth body-compatible connection terminal, The contact portion of any one of the 7 body corresponding connection terminal, the ninth body corresponding connection terminal, and the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are the center of the first mount. An inner angle formed by the contact portion of the ninth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is smaller than an inner angle formed with respect to the point. Any one of a body corresponding connection terminal, the second body corresponding connection terminal, the sixth body corresponding connection terminal, the seventh body corresponding connection terminal, and the tenth body corresponding connection terminal. The contact portion and the contact portion of the eleventh body corresponding connection terminal are smaller than the inner angle formed with respect to the first mount center point, and the contact portion of the tenth body corresponding connection terminal and the eleventh body corresponding connection terminal. The inner angle formed by the contact portion with respect to the first mount center point is the first body corresponding connection terminal, the second body corresponding connection terminal, the sixth body corresponding connection terminal, and the seventh body corresponding connection. The contact portion of any one of the terminals and the contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the sixth body corresponding connection terminal The inner angle formed by the contact portion of the eleventh body connection terminal with respect to the first mount center point is the first body connection terminal, the second body connection terminal, and Any one of the seventh body corresponding connection terminals and the contact portion of the eleventh body corresponding connection terminal are smaller than an inner angle formed with respect to the first mount center point, and the seventh body corresponding connection. The inner angle formed by the contact portion of the terminal and the contact portion of the eleventh body connection terminal with respect to the first mount center point is either the first body connection terminal or the second body connection terminal. The one contact portion and the contact portion of the eleventh body corresponding connection terminal are smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the second body corresponding connection terminal and the eleventh body The internal angle formed by the contact portion of the corresponding connection terminal with respect to the first mount center point is the contact portion of the first body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal. Is smaller than an inner angle formed with respect to the first mount center point.
In the intermediate adapter according to claim 7, a camera body having 12 body-side connection terminals provided in an arc shape in the vicinity of the body-side mount portion of the camera body is attached, and a first mount center point is provided. A body on which at least five body-corresponding connection terminals having an exposed area exposed on the surface are disposed , each including a contact portion that comes into contact with one of the corresponding body-side connection terminals when the mount portion and the camera body are coupled. A clock for receiving a clock signal from the camera body is provided with a corresponding connection terminal holding portion and a second mount portion to which an accessory can be attached and detached and having a second mount center point. Input body corresponding connection terminal and a data input body to which a first data signal is input from the camera body in synchronization with the clock signal A connection terminal, a data output body corresponding connection terminal that outputs a second data signal to the camera body in synchronization with the clock signal, and an asynchronous signal output that outputs an asynchronous signal not synchronized with the clock signal to the camera body Based on the asynchronous signal output from the body corresponding connection terminal and the asynchronous signal output from the asynchronous signal output body corresponding connection terminal and the clock signal input at the clock input body corresponding connection terminal, the data input body corresponding connection terminal is used. An operating voltage for receiving the first data signal from the camera body and transmitting the second data signal to the camera body using the data output body corresponding connection terminal is supplied from the camera body. A connection terminal corresponding to the asynchronous signal output body. The inner angle formed by the contact portion and the contact portion of the voltage supply body corresponding connection terminal with respect to the first mount center point is two body corresponding connection terminals arbitrarily selected from the five body corresponding connection terminals. The contact portion of the clock input body corresponding connection terminal and the contact portion of the voltage supply body corresponding connection terminal are the first inner angle formed with respect to the first mount center point. The inner angle formed with respect to the mount center point corresponds to any one of the contact part corresponding to the data input body, the connection terminal corresponding to the data output body, and the connection terminal corresponding to the asynchronous signal output body and the voltage supply body. The contact portion of the connection terminal is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the connection terminal corresponding to the data input body and the The inner angle formed by the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is one of the contact portions corresponding to the connection terminal corresponding to the data output body and the connection terminal corresponding to the asynchronous signal output body. And the contact portion of the connection terminal corresponding to the voltage supply body is smaller than an inner angle formed with respect to the first mount center point, and the contact portion of the connection terminal corresponding to the data output body and the contact portion corresponding to the voltage supply body The internal angle formed by the portion with respect to the first mount center point is determined by the contact portion of the connection terminal corresponding to the asynchronous signal output body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point. It is characterized by being smaller than the inner angle formed .
The accessory according to claim 16 , wherein an intermediate adapter having twelve adapter side connection terminals provided in an arc shape is attached in the vicinity of the adapter side mount portion of the intermediate adapter, and has a first mount center point. 12 having an exposed region exposed to the surface , each of which is connected to each of the 12 adapter side connection terminals when coupled to the intermediate adapter and includes a contact portion that contacts the corresponding adapter side connection terminal. An adapter-compatible connection terminal holding portion in which the adapter-compatible connection terminals are arranged, an accessory is detachable, a second mount portion having a second mount center point, and each of the 12 adapter-compatible connection terminals, are electrically connected, exposed to the surface include a contact portion for contacting a single accessory side connecting terminals, each corresponding to the time of coupling between the accessory That 12 of the accessory corresponding connecting terminal having an exposed region and an accessory corresponding connecting terminal holding portion which is arranged, the twelve adapter corresponding connection terminal, a first adapter in which the first voltage is supplied from the intermediate adapter A corresponding connection terminal; a second adapter-compatible connection terminal serving as a ground terminal corresponding to the first voltage; a third adapter-compatible connection terminal to which a first clock signal is input from the intermediate adapter; and the first clock signal. A connection terminal corresponding to the fourth adapter that receives the first data signal from the intermediate adapter synchronously, and a connection that corresponds to the fifth adapter that outputs the second data signal to the intermediate adapter synchronously with the first clock signal. A terminal, a connection terminal corresponding to a sixth adapter to which the second clock signal is input from the intermediate adapter, and the intermediate clock in synchronization with the second clock signal. A seventh adapter-compatible connection terminal that outputs a third data signal to the adapter; an eighth adapter-compatible connection terminal that outputs a first asynchronous signal that is not synchronized with the first clock signal and the second clock signal to the intermediate adapter; A connection terminal corresponding to a ninth adapter that receives a second asynchronous signal that is not synchronized with the first clock signal and the second clock signal from the intermediate adapter, and a third that is not synchronized with the first clock signal and the second clock signal. A connection terminal corresponding to the tenth adapter for outputting an asynchronous signal to the intermediate adapter, a first asynchronous signal output from the connection terminal corresponding to the eighth adapter and the first clock signal input from the connection terminal corresponding to the third adapter Based on the first data signal from the intermediate adapter using the connection terminal corresponding to the fourth adapter. Receiving, transmitting the second data signal to the intermediate adapter using the fifth adapter-compatible connection terminal, and receiving the second asynchronous signal input from the ninth adapter-compatible connection terminal; Based on the third asynchronous signal output from the connection terminal corresponding to 10 adapters and the second clock signal input from the connection terminal corresponding to the sixth adapter, to the intermediate adapter using the connection terminal corresponding to the seventh adapter A twelfth adapter connection terminal supplied from the intermediate adapter and a twelfth terminal serving as a ground terminal corresponding to the second voltage have a second voltage lower than the first voltage for transmitting the third data signal. consists adapter corresponding connection terminals, sorted in the circumferential direction around the second mount center point of the twelve accessory corresponding connection terminals, the 1 It characterized the order different from that in the circumferential direction around the first mount center point of pieces of the adapter corresponding connection terminals.
The accessory according to claim 17 is attached to an intermediate adapter having at least five adapter side connection terminals provided in an arc shape in the vicinity of the adapter side mount portion of the intermediate adapter, and has a first mount center point. An adapter in which at least five adapter-corresponding connection terminals having an exposed area exposed on the surface are provided , each of which includes a contact portion that comes into contact with one of the corresponding adapter-side connection terminals when coupled to the intermediate adapter. The corresponding connection terminal holding part, the accessory is detachable, and each of the second mount part having the second mount center point is electrically connected to one of the five adapter-compatible connection terminals when coupled with the accessory. It is, if less having an exposed area exposed to the surface include a contact portion for contacting a single accessory side connecting terminals, each corresponding An accessory-compatible connection terminal holding portion in which five accessory-compatible connection terminals are arranged, and the five adapter-compatible connection terminals include a clock input adapter-compatible connection terminal to which a clock signal is input from the intermediate adapter; A data input adapter compatible connection terminal that receives a first data signal from the intermediate adapter in synchronization with a clock signal, and a data output adapter that outputs a second data signal to the intermediate adapter in synchronization with the clock signal A connection terminal, an asynchronous signal output adapter compatible connection terminal that outputs an asynchronous signal that is not synchronized with the clock signal to the intermediate adapter, and the asynchronous signal output terminal and the clock input adapter compatible connection terminal that are output from the asynchronous signal output adapter compatible connection terminal Based on the clock signal input at Operation for receiving the first data signal from the intermediate adapter using the connection terminal corresponding to the power adapter and transmitting the second data signal to the intermediate adapter using the connection terminal corresponding to the data output adapter voltage, the consists of a voltage supply adapter corresponding connection terminal supplied from the intermediate adapter, sorted in the circumferential direction around the second mount center point of the five accessory corresponding connection terminal, the five The adapter-compatible connection terminals are different from the arrangement order in the circumferential direction around the first mount center point.
The interchangeable lens according to claim 18 , wherein an intermediate adapter having twelve adapter side connection terminals provided in an arc shape is attached in the vicinity of the adapter side mount portion of the intermediate adapter, and a mount portion having a mount center point; Twelve lens sides connected to each of the twelve adapter side connection terminals when coupled to the intermediate adapter , each having an exposed area exposed to the surface, including a contact portion that contacts the corresponding adapter side connection terminal A lens-side connection terminal holding portion in which a connection terminal is arranged, and the twelve lens-side connection terminals include a first lens-side connection terminal to which a first voltage is supplied from the intermediate adapter, and the first voltage. A second lens side connection terminal serving as a corresponding ground terminal; a third lens side connection terminal to which a first clock signal is input from the intermediate adapter; and the first clock. A fourth lens side connection terminal to which the first data signal is input from the intermediate adapter in synchronization with the first adapter, and a fifth lens for outputting the second data signal to the intermediate adapter in synchronization with the first clock signal. Side connection terminal, a sixth lens side connection terminal to which a second clock signal is input from the intermediate adapter, and a seventh lens side for outputting a third data signal to the intermediate adapter in synchronization with the second clock signal Synchronized with a connection terminal, an eighth lens-side connection terminal that outputs a first asynchronous signal that is not synchronized with the first clock signal and the second clock signal to the intermediate adapter, and with the first clock signal and the second clock signal A second asynchronous signal that is not synchronized with a ninth lens side connection terminal that is input from the intermediate adapter, and a first asynchronous signal that is not synchronized with the first clock signal and the second clock signal The tenth lens side connection terminal that outputs an asynchronous signal to the intermediate adapter, the first asynchronous signal that is output from the eighth lens side connection terminal, and the first clock signal that is input from the third lens side connection terminal And receiving the first data signal from the intermediate adapter using the fourth lens side connection terminal and transmitting the second data signal to the intermediate adapter using the fifth lens side connection terminal. And the second asynchronous signal input from the ninth lens side connection terminal, the third asynchronous signal output from the tenth lens side connection terminal, and the sixth lens side connection terminal. Based on the second clock signal, a first voltage smaller than a first voltage for transmitting the third data signal to the intermediate adapter using the seventh lens side connection terminal. 2 voltage, the a first lens-side connection terminal supplied from the intermediate adapter consists of a twelfth lens-side connection terminal comprising a ground terminal corresponding to the second voltage, wherein the twelve lens-side connection terminal The arrangement order in the circumferential direction around the mount center point is different from the arrangement order in the circumferential direction around the mount center point.
The interchangeable lens according to claim 19 , wherein an intermediate adapter having at least five adapter side connection terminals provided in an arc shape is attached in the vicinity of the adapter side mount portion of the intermediate adapter, and has a mount portion having a mount center point; , which is connected at coupling with the intermediate adapter on each of the five adapter side connection terminals, at least 5 having an exposed area exposed to the surface include a contact portion for contacting one of said adapter side connection terminals, each corresponding A lens-side connection terminal holding portion in which a plurality of lens-side connection terminals are arranged, the five lens-side connection terminals including a clock input lens-side connection terminal to which a clock signal is input from the intermediate adapter, and the clock In synchronization with the signal, the data input lens side connection terminal to which the first data signal is input from the intermediate adapter, and the clock signal A data output lens side connection terminal for outputting a second data signal to the intermediate adapter, an asynchronous signal output lens side connection terminal for outputting an asynchronous signal not synchronized with the clock signal to the intermediate adapter, and the asynchronous Based on the asynchronous signal output from the signal output lens side connection terminal and the clock signal input at the clock input lens side connection terminal, the first data from the intermediate adapter using the data input lens side connection terminal An operation voltage for receiving a signal and transmitting the second data signal to the intermediate adapter using the data output lens side connection terminal is a voltage supply lens side connection terminal supplied from the intermediate adapter; It made, sorted in the circumferential direction around the mounting center point of the five lens-side connection terminal , Characterized in that different from the arrangement order in the circumferential direction around the mounting center point of the five adapter side connection terminal.

Claims (31)

A camera body having twelve body side connection terminals provided in the vicinity of the body side mount portion of the camera body, and a first mount portion having a first mount center point;
A body-corresponding connection terminal holding portion in which twelve body-corresponding connection terminals each having a contact portion that is connected to each of the twelve body-side connection terminals and contacts the body-side connection terminal;
An accessory is detachable and includes a second mount portion having a second mount center point;
The 12 body-compatible connection terminals are:
A first body corresponding connection terminal to which a first voltage is supplied from the camera body;
A second body corresponding connection terminal serving as a ground terminal corresponding to the first voltage;
A third body corresponding connection terminal to which a first clock signal is input from the camera body;
A fourth body corresponding connection terminal to which a first data signal is input from the camera body in synchronization with the first clock signal;
A fifth body corresponding connection terminal that outputs a second data signal to the camera body in synchronization with the first clock signal;
A connection terminal corresponding to a sixth body to which a second clock signal is input from the camera body;
A seventh body corresponding connection terminal for outputting a third data signal to the camera body in synchronization with the second clock signal;
An eighth body corresponding connection terminal for outputting a first asynchronous signal not synchronized with the first clock signal and the second clock signal to the camera body;
A ninth body corresponding connection terminal to which a second asynchronous signal not synchronized with the first clock signal and the second clock signal is input from the camera body;
A tenth body corresponding connection terminal for outputting a third asynchronous signal not synchronized with the first clock signal and the second clock signal to the camera body;
Based on the first asynchronous signal output from the eighth body corresponding connection terminal and the first clock signal input from the third body corresponding connection terminal, the fourth body corresponding connection terminal is used to Receiving the first data signal and transmitting the second data signal to the camera body using the fifth body corresponding connection terminal, and the input to the ninth body corresponding connection terminal Based on the second asynchronous signal, the third asynchronous signal output from the tenth body corresponding connection terminal, and the second clock signal input from the sixth body corresponding connection terminal, the seventh body corresponding connection terminal is A second voltage smaller than the first voltage for transmitting the third data signal to the camera body using the eleventh voltage supplied from the camera body. I and the corresponding connection terminals,
A twelfth body corresponding connection terminal serving as a ground terminal corresponding to the second voltage,
An inner angle formed by the contact portion of the first body corresponding connection terminal and the contact portion of the eleventh body connection terminal with respect to the first mount center point is arbitrarily selected from the 12 body corresponding connection terminals The contact portion of the two body-corresponding connection terminals is the largest inside angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the eleventh body-corresponding connection terminal and the contact portion of the twelfth body-corresponding connection terminal with respect to the first mount center point is from the first body-corresponding connection terminal to the tenth body. The contact portion of any one of the corresponding connection terminals and the contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point,
The internal angle formed by the contact portion of the third body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body. Any one of the corresponding connecting terminal and the fourth body corresponding connecting terminal to the tenth body corresponding connecting terminal and the corresponding contact part of the eleventh body corresponding connecting terminal are at the first mount center point. Smaller than the internal angle
The internal angle formed by the contact portion of the fourth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal or the second body. The corresponding connection terminal, and the contact portion of any one of the fifth body corresponding connection terminal to the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are at the first mount center point. Smaller than the internal angle
The inner angle formed by the contact portion of the fifth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body. The corresponding connection terminal, and the contact portion of any one of the sixth body corresponding connection terminal to the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are at the first mount center point. Smaller than the internal angle
The internal angle formed by the contact portion of the eighth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal, the second body Any one of the contact portion and the eleventh body among the corresponding connection terminal, the sixth body corresponding connection terminal, the seventh body corresponding connection terminal, the ninth body corresponding connection terminal, and the tenth body corresponding connection terminal. The contact portion of the corresponding connection terminal is smaller than the inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the ninth body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal with respect to the first mount center point is the first body-corresponding connection terminal, the second body Any one of the corresponding connection terminal, the sixth body corresponding connection terminal, the seventh body corresponding connection terminal, and the tenth body corresponding connection terminal and the corresponding contact part of the eleventh body corresponding connection terminal are provided. Smaller than an inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body. The contact portion of any one of the corresponding connection terminal, the sixth body corresponding connection terminal, and the seventh body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are at the first mount center point. Smaller than the internal angle
The inner angle formed by the contact portion of the sixth body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal with respect to the first mount center point is the first body-corresponding connection terminal, the second body The contact portion of any one of the corresponding connection terminal and the seventh body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal are smaller than an inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the seventh body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body. The contact portion of any one of the corresponding connection terminals and the contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the second body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the contact angle of the first body corresponding connection terminal. The intermediate adapter, wherein the contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point. The intermediate adapter according to claim 1,
The distance between the center portion of at least one body-corresponding connection terminal and the first mount center point among the 12 body-corresponding connection terminals is such that the center portion of the other at least one body-corresponding connection terminal and the first portion An intermediate adapter that is different from the distance between the mount center point. The intermediate adapter according to claim 1 or 2,
An accessory-corresponding connection terminal holding portion in which a plurality of accessory-corresponding connection terminals are arranged, which are electrically connected to one of the 12 body-corresponding connection terminals, each having a contact portion that contacts one accessory-side connection terminal. An intermediate adapter characterized by comprising. The intermediate adapter according to claim 3,
At least two of the plurality of accessory-corresponding connection terminals in the circumferential direction around the second mount center point correspond to the 12 bodies in the circumferential direction around the first mount center point. An intermediate adapter characterized by being different in positional relationship between at least two of the connection terminals. The intermediate adapter according to claim 3,
The accessory-corresponding connection terminal holding portion in which 12 accessory-corresponding connection terminals each having a contact portion that is electrically connected to each of the 12 body-corresponding connection terminals and contacts one accessory-side connection terminal are arranged. Prepared,
The twelve accessory-compatible connection terminals are respectively connected to twelve accessory-side connection terminals provided in the vicinity of the accessory mount portion detachable from the second mount portion. The intermediate adapter according to claim 5,
The positional relationship between at least two of the 12 accessory-corresponding connection terminals in the circumferential direction centered on the second mount center point is the 12 body bodies in the circumferential direction centered on the first mount center point. An intermediate adapter characterized in that at least two of the corresponding connection terminals are different in positional relationship. A camera body having twelve body side connection terminals provided in the vicinity of the body side mount portion of the camera body, and a first mount portion having a first mount center point;
A body-corresponding connection terminal holding portion in which at least five body-corresponding connection terminals each having a contact portion that contacts one of the body-side connection terminals are disposed;
An accessory is detachable and includes a second mount portion having a second mount center point;
The five body-compatible connection terminals are:
A clock input body compatible connection terminal to which a clock signal is input from the camera body;
A data input body corresponding connection terminal to which a first data signal is input from the camera body in synchronization with the clock signal;
A data output body corresponding connection terminal for outputting a second data signal to the camera body in synchronization with the clock signal;
Asynchronous signal output body corresponding connection terminal that outputs an asynchronous signal that is not synchronized with the clock signal to the camera body,
Based on the asynchronous signal output from the asynchronous signal output body corresponding connection terminal and the clock signal input at the clock input body corresponding connection terminal, the data input body corresponding connection terminal is used to output the second signal from the camera body. An operation voltage for receiving one data signal and transmitting the second data signal to the camera body using the data output body corresponding connection terminal is supplied from the camera body. Terminal and
An inner angle formed by the contact portion of the connection terminal corresponding to the asynchronous signal output body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is arbitrarily determined from the five body connection terminals. The contact portion of the selected two body-corresponding connection terminals is the largest inside angle formed with respect to the first mount center point;
The internal angle formed by the contact portion of the connection terminal corresponding to the clock input body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is the connection terminal corresponding to the data input body, the data output body Any one of the corresponding connection terminal and the connection part corresponding to the asynchronous signal output body and the contact part of the connection terminal corresponding to the voltage supply body is smaller than an inner angle formed with respect to the first mount center point,
The internal angle formed by the contact portion of the connection terminal corresponding to the data input body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is the connection terminal corresponding to the data output body and the asynchronous signal output The contact portion of any one of the body-corresponding connection terminals and the contact portion of the voltage supply body-corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the connection terminal corresponding to the data output body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is the contact portion of the connection terminal corresponding to the asynchronous signal output body An intermediate adapter, wherein the contact portion of the connection terminal corresponding to the voltage supply body is smaller than an inner angle formed with respect to the first mount center point. The intermediate adapter according to claim 7,
Of the five body-corresponding connection terminals, the distance between the center of at least one body-corresponding connection terminal and the first mount center point is such that the distance between the center of the at least one other body-corresponding connection terminal and the first An intermediate adapter that is different from the distance between the mount center point. The intermediate adapter according to claim 7 or 8,
An accessory-corresponding connection terminal holding portion in which a plurality of accessory-corresponding connection terminals each having a contact portion that is electrically connected to one of the five body-corresponding connection terminals and contacts with one accessory-side connection terminal is disposed. An intermediate adapter characterized by comprising. The intermediate adapter according to claim 9,
At least two of the plurality of accessory-corresponding connection terminals in the circumferential direction around the second mount center point correspond to the five bodies in the circumferential direction around the first mount center point. An intermediate adapter characterized by being different in positional relationship between at least two of the connection terminals. The intermediate adapter according to claim 9,
An accessory-compatible connection terminal holding portion in which at least five accessory-compatible connection terminals are arranged, each of which is electrically connected to the five body-compatible connection terminals and each has a contact portion that contacts one accessory-side connection terminal; Prepared,
The five adapter-compatible connection terminals are respectively connected to at least five accessory-side connection terminals provided in the vicinity of the accessory mount that can be attached to and detached from the second mount. . The intermediate adapter according to claim 11,
The positional relationship between at least two of the five accessory-corresponding connection terminals in the circumferential direction centered on the second mount center point is the five bodies in the circumferential direction centered on the first mount center point. An intermediate adapter characterized in that at least two of the corresponding connection terminals are different in positional relationship. A camera body having twelve body side connection terminals provided in the vicinity of the body side mount portion of the camera body, and a first mount portion having a first mount center point;
A body-corresponding connection terminal holding portion in which twelve body-corresponding connection terminals connected to each of the twelve body-side connection terminals, each having a contact portion that contacts the body-side connection terminal;
An accessory is detachable and includes a second mount portion having a second mount center point;
The 12 body-compatible connection terminals are:
A body corresponding side exposed region exposed on a surface of the body corresponding connection terminal holding portion;
A first body corresponding connection terminal to which a first voltage is supplied from the camera body;
A second body corresponding connection terminal serving as a ground terminal corresponding to the first voltage;
A third body corresponding connection terminal to which a first clock signal is input from the camera body;
A fourth body corresponding connection terminal to which a first data signal is input from the camera body in synchronization with the first clock signal;
A fifth body corresponding connection terminal that outputs a second data signal to the camera body in synchronization with the first clock signal;
A connection terminal corresponding to a sixth body to which a second clock signal is input from the camera body;
A seventh body corresponding connection terminal for outputting a third data signal to the camera body in synchronization with the second clock signal;
An eighth body corresponding connection terminal for outputting a first asynchronous signal not synchronized with the first clock signal and the second clock signal to the camera body;
A ninth body corresponding connection terminal to which a second asynchronous signal not synchronized with the first clock signal and the second clock signal is input from the camera body;
A tenth body corresponding connection terminal for outputting a third asynchronous signal not synchronized with the first clock signal and the second clock signal to the camera body;
Based on the first asynchronous signal output from the eighth body corresponding connection terminal and the first clock signal input from the third body corresponding connection terminal, the fourth body corresponding connection terminal is used to Receiving the first data signal and transmitting the second data signal to the camera body using the fifth body corresponding connection terminal, and the input to the ninth body corresponding connection terminal Based on the second asynchronous signal, the third asynchronous signal output from the tenth body corresponding connection terminal, and the second clock signal input from the sixth body corresponding connection terminal, the seventh body corresponding connection terminal is A second voltage smaller than the first voltage for transmitting the third data signal to the camera body using the eleventh voltage supplied from the camera body. I and the corresponding connection terminals,
A twelfth body corresponding connection terminal serving as a ground terminal corresponding to the second voltage,
An inner angle formed by the contact portion of the first body corresponding connection terminal and the contact portion of the eleventh body connection terminal with respect to the first mount center point is arbitrarily selected from the 12 body corresponding connection terminals The contact portion of the two body-corresponding connection terminals is the largest inside angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the eleventh body-corresponding connection terminal and the contact portion of the twelfth body-corresponding connection terminal with respect to the first mount center point is from the first body-corresponding connection terminal to the tenth body. The contact portion of any one of the corresponding connection terminals and the contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point,
The internal angle formed by the contact portion of the third body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body. Any one of the corresponding connecting terminal and the fourth body corresponding connecting terminal to the tenth body corresponding connecting terminal and the corresponding contact part of the eleventh body corresponding connecting terminal are at the first mount center point. Smaller than the internal angle
The internal angle formed by the contact portion of the fourth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal or the second body. The corresponding connection terminal, and the contact portion of any one of the fifth body corresponding connection terminal to the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are at the first mount center point. Smaller than the internal angle
The inner angle formed by the contact portion of the fifth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body. The corresponding connection terminal, and the contact portion of any one of the sixth body corresponding connection terminal to the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are at the first mount center point. Smaller than the internal angle
The internal angle formed by the contact portion of the eighth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal, the second body Any one of the contact portion and the eleventh body among the corresponding connection terminal, the sixth body corresponding connection terminal, the seventh body corresponding connection terminal, the ninth body corresponding connection terminal, and the tenth body corresponding connection terminal. The contact portion of the corresponding connection terminal is smaller than the inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the ninth body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal with respect to the first mount center point is the first body-corresponding connection terminal, the second body Any one of the corresponding connection terminal, the sixth body corresponding connection terminal, the seventh body corresponding connection terminal, and the tenth body corresponding connection terminal and the corresponding contact part of the eleventh body corresponding connection terminal are provided. Smaller than an inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the tenth body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body. The contact portion of any one of the corresponding connection terminal, the sixth body corresponding connection terminal, and the seventh body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal are at the first mount center point. Smaller than the internal angle
The inner angle formed by the contact portion of the sixth body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal with respect to the first mount center point is the first body-corresponding connection terminal, the second body The contact portion of any one of the corresponding connection terminal and the seventh body-corresponding connection terminal and the contact portion of the eleventh body-corresponding connection terminal are smaller than an inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the seventh body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the first body corresponding connection terminal and the second body. The contact portion of any one of the corresponding connection terminals and the contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the second body corresponding connection terminal and the contact portion of the eleventh body corresponding connection terminal with respect to the first mount center point is the contact angle of the first body corresponding connection terminal. The intermediate adapter, wherein the contact portion of the eleventh body corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point. The intermediate adapter according to claim 13,
The distance between the center portion of the body-corresponding-side exposed region of at least one body-corresponding connection terminal of the 12 body-corresponding connection terminals and the first mount center point is at least one other body-corresponding connection terminal. An intermediate adapter, wherein the distance between the center portion of the body-corresponding-side exposed region and the first mount center point is different. The intermediate adapter according to claim 13 or 14,
An accessory-corresponding connection terminal holding portion in which a plurality of accessory-corresponding connection terminals are arranged, which are electrically connected to one of the 12 body-corresponding connection terminals, each having a contact portion that contacts one accessory-side connection terminal. Prepared,
The plurality of accessory-compatible connection terminals include an accessory-compatible side exposed region exposed on the surface of the accessory-compatible connection terminal holding portion. The intermediate adapter according to claim 15,
Among the plurality of accessory-corresponding connection terminals in the circumferential direction around the second mount center point, the positional relationship between at least two of the accessory-corresponding-side exposed regions is the circumferential direction around the first mount center point An intermediate adapter, wherein the positional relationship of at least two of the 12 body-corresponding connection terminals in the body-corresponding-side exposed region is different. The intermediate adapter according to claim 15,
An accessory-compatible connection terminal holding portion in which twelve accessory-compatible connection terminals each having a contact portion that is electrically connected to each of the 12 body-compatible connection terminals and contacts one accessory-side connection terminal is disposed. Prepared,
The twelve accessory-compatible connection terminals have an accessory-corresponding side exposed region exposed on the surface of the accessory-compatible connection terminal holding portion, and are provided in the vicinity of the accessory mount portion that can be attached to and detached from the second mount portion. An intermediate adapter connected to each of the 12 accessory side connection terminals. The intermediate adapter according to claim 17,
The positional relationship between at least two accessory-corresponding-side exposed regions of the twelve accessory-corresponding connection terminals in the circumferential direction centered on the second mount center point is a circle centered on the first mount center point. An intermediate adapter, wherein the intermediate adapter is different from a positional relationship between at least two of the twelve body-corresponding connection terminals in the circumferential direction. A camera body having twelve body side connection terminals provided in the vicinity of the body side mount portion of the camera body, and a first mount portion having a first mount center point;
A body-corresponding connection terminal holding portion in which at least five body-corresponding connection terminals each having a contact portion that contacts one of the body-side connection terminals are disposed;
An accessory is detachable and includes a second mount portion having a second mount center point;
The five body-compatible connection terminals are:
A body corresponding side exposed region exposed on a surface of the body corresponding connection terminal holding portion;
A clock input body compatible connection terminal to which a clock signal is input from the camera body;
A data input body corresponding connection terminal to which a first data signal is input from the camera body in synchronization with the clock signal;
A data output body corresponding connection terminal for outputting a second data signal to the camera body in synchronization with the clock signal;
Asynchronous signal output body corresponding connection terminal that outputs an asynchronous signal that is not synchronized with the clock signal to the camera body,
Based on the asynchronous signal output from the connection terminal corresponding to the asynchronous signal output body and the clock signal input at the connection terminal corresponding to the clock input body, the first from the camera body using the connection terminal corresponding to the data input body. A voltage supply body-corresponding connection terminal supplied with an operating voltage for receiving a data signal and transmitting the second data signal to the camera body using the data output body-corresponding connection terminal And
An inner angle formed by the contact portion of the connection terminal corresponding to the asynchronous signal output body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is arbitrarily determined from the five body connection terminals. The contact portion of the selected two body-corresponding connection terminals is the largest inside angle formed with respect to the first mount center point;
The internal angle formed by the contact portion of the connection terminal corresponding to the clock input body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is the connection terminal corresponding to the data input body, the data output body Any one of the corresponding connection terminal and the connection part corresponding to the asynchronous signal output body and the contact part of the connection terminal corresponding to the voltage supply body is smaller than an inner angle formed with respect to the first mount center point,
The internal angle formed by the contact portion of the connection terminal corresponding to the data input body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is the connection terminal corresponding to the data output body and the asynchronous signal output The contact portion of any one of the body-corresponding connection terminals and the contact portion of the voltage supply body-corresponding connection terminal is smaller than an inner angle formed with respect to the first mount center point,
The inner angle formed by the contact portion of the connection terminal corresponding to the data output body and the contact portion of the connection terminal corresponding to the voltage supply body with respect to the first mount center point is the contact portion of the connection terminal corresponding to the asynchronous signal output body An intermediate adapter, wherein the contact portion of the connection terminal corresponding to the voltage supply body is smaller than an inner angle formed with respect to the first mount center point. The intermediate adapter according to claim 19,
The distance between the central portion of the body-corresponding-side exposed region of at least one body-corresponding connection terminal of the five body-corresponding connection terminals and the first mount center point is at least one other body-corresponding connection terminal. An intermediate adapter, wherein the distance between the center portion of the body-corresponding-side exposed region and the first mount center point is different. The intermediate adapter according to claim 19 or 20,
An accessory-corresponding connection terminal holding portion in which a plurality of accessory-corresponding connection terminals each having a contact portion that is electrically connected to one of the five body-corresponding connection terminals and contacts with one accessory-side connection terminal is disposed. Prepared,
The plurality of accessory-compatible connection terminals include an accessory-compatible side exposed region exposed on the surface of the accessory-compatible connection terminal holding portion. The intermediate adapter according to claim 21,
The positional relationship between at least two of the plurality of accessory-corresponding connection terminals in the circumferential direction around the second mount center point is the circumferential direction around the first mount center point. An intermediate adapter, wherein the intermediate adapter is different from the positional relationship of at least two of the five body-corresponding connection terminals in the body-side corresponding exposed region. The intermediate adapter according to claim 21,
An accessory-compatible connection terminal holding portion in which at least five accessory-compatible connection terminals are arranged, each of which is electrically connected to the five body-compatible connection terminals and each has a contact portion that contacts one accessory-side connection terminal; Prepared,
The five accessory-compatible connection terminals have an accessory-corresponding-side exposed region exposed on the surface of the accessory-compatible connection terminal holding portion, and are provided in the vicinity of the accessory mount portion that can be attached to and detached from the second mount portion. An intermediate adapter connected to at least five accessory side connection terminals. The intermediate adapter according to claim 18 or 19,
Of the five accessory-corresponding connection terminals with respect to the second mount center point, the positional relationship between at least two of the accessory-corresponding exposed areas is at least one of the five body-corresponding connection terminals with respect to the first mount center point. An intermediate adapter characterized by being different in positional relationship between the two exposed areas corresponding to the body. The intermediate adapter according to claim 1 or 13,
An accessory-compatible connection terminal holding portion in which a plurality of accessory-compatible connection terminals are arranged;
A communication unit that performs data communication with the camera body and the accessory;
The control instruction is represented in response to receiving first control data representing a predetermined control instruction from the camera body via the communication unit via at least one of the twelve body corresponding connection terminals. The intermediate adapter further comprising: a control data exchanging unit that transmits second control data different from the first control data to the accessory via the communication unit. The intermediate adapter according to claim 7 or 19,
An accessory-compatible connection terminal holding portion in which a plurality of accessory-compatible connection terminals are arranged;
A communication unit that performs data communication with the camera body and the accessory;
The control instruction is represented in response to receiving first control data representing a predetermined control instruction from the camera body via the communication unit via at least one of the five body-corresponding connection terminals. An intermediate adapter, comprising: a control data transfer unit that transmits second control data different from the first control data to the accessory via the communication unit. In the intermediate adapter according to any one of claims 1 to 26,
An intermediate adapter comprising: an optical member that emits subject light transmitted through an imaging optical system included in the accessory to the camera body. An intermediate adapter having twelve adapter-side connection terminals provided in the vicinity of the adapter-side mount portion of the intermediate adapter, and a first mount portion having a first mount center point;
An adapter-compatible connection terminal holding portion in which 12 adapter-compatible connection terminals are arranged, each having a contact portion that is connected to each of the 12 adapter-side connection terminals and contacts the adapter-side connection terminal;
A second mount part, the accessory being removable, and having a second mount center point;
Accessory-compatible connection terminal holding in which 12 accessory-compatible connection terminals are arranged, each of which is electrically connected to one of the 12 adapter-compatible connection terminals, each having a contact portion that contacts one accessory-side connection terminal With
The 12 adapter-compatible connection terminals are:
A connection terminal corresponding to a first adapter to which a first voltage is supplied from the intermediate adapter;
A connection terminal corresponding to the second adapter serving as a ground terminal corresponding to the first voltage;
A connection terminal corresponding to a third adapter to which a first clock signal is input from the intermediate adapter;
A fourth adapter-compatible connection terminal to which a first data signal is input from the intermediate adapter in synchronization with the first clock signal;
A fifth adapter compatible connection terminal for outputting a second data signal to the intermediate adapter in synchronization with the first clock signal;
A connection terminal corresponding to a sixth adapter to which a second clock signal is input from the intermediate adapter;
A connection terminal corresponding to a seventh adapter that outputs a third data signal to the intermediate adapter in synchronization with the second clock signal;
A connection terminal corresponding to an eighth adapter for outputting a first asynchronous signal not synchronized with the first clock signal and the second clock signal to the intermediate adapter;
A connection terminal corresponding to a ninth adapter to which a second asynchronous signal not synchronized with the first clock signal and the second clock signal is input from the intermediate adapter;
A connection terminal corresponding to a tenth adapter that outputs a third asynchronous signal not synchronized with the first clock signal and the second clock signal to the intermediate adapter;
Based on the first asynchronous signal output from the connection terminal corresponding to the eighth adapter and the first clock signal input from the connection terminal corresponding to the third adapter, from the intermediate adapter using the connection terminal corresponding to the fourth adapter Receiving the first data signal and transmitting the second data signal to the intermediate adapter using the fifth adapter-compatible connection terminal, and the input from the ninth adapter-compatible connection terminal Based on the second asynchronous signal, the third asynchronous signal output from the tenth adapter-compatible connection terminal, and the second clock signal input from the sixth adapter-compatible connection terminal, the seventh adapter-compatible connection terminal is And a second voltage lower than the first voltage for transmitting the third data signal to the intermediate adapter is provided from the intermediate adapter. 11 and adapter corresponding connection terminal,
A connection terminal corresponding to the twelfth adapter serving as a ground terminal corresponding to the second voltage;
The positional relationship between at least two of the 12 accessory-corresponding connection terminals in the circumferential direction centered on the second mount center point is the 12 adapters in the circumferential direction centered on the first mount center point. An accessory characterized by being different from the positional relationship of at least two of the corresponding connection terminals. An intermediate adapter having at least five adapter side connection terminals provided in the vicinity of the adapter side mount portion of the intermediate adapter is attached, and a first mount portion having a first mount center point;
An adapter-compatible connection terminal holding portion in which at least five adapter-compatible connection terminals each having a contact portion that contacts one of the adapter-side connection terminals;
A second mount part, the accessory being removable, and having a second mount center point;
Accessory-compatible connection terminal in which at least five accessory-compatible connection terminals are disposed, each of which is electrically connected to one of the five adapter-compatible connection terminals, and each has a contact portion that contacts one accessory-side connection terminal A holding part,
The five adapter-compatible connection terminals are:
A clock input adapter compatible connection terminal to which a clock signal is input from the intermediate adapter;
A data input adapter compatible connection terminal to which the first data signal is input from the intermediate adapter in synchronization with the clock signal;
A data output adapter compatible connection terminal for outputting a second data signal to the intermediate adapter in synchronization with the clock signal;
Asynchronous signal output adapter compatible connection terminal for outputting an asynchronous signal that is not synchronized with the clock signal to the intermediate adapter;
Based on the asynchronous signal output from the connection terminal corresponding to the asynchronous signal output adapter and the clock signal input at the connection terminal corresponding to the clock input adapter, the second input from the intermediate adapter is performed using the connection terminal corresponding to the data input adapter. Connection for voltage supply adapter in which an operating voltage for receiving one data signal and transmitting the second data signal to the intermediate adapter using the connection terminal corresponding to the data output adapter is supplied from the intermediate adapter Terminal and
The positional relationship between at least two of the five accessory-corresponding connection terminals in the circumferential direction centered on the second mount center point is the five adapters in the circumferential direction centered on the first mount center point. An accessory characterized by being different from the positional relationship of at least two of the corresponding connection terminals. An intermediate adapter having 12 adapter side connection terminals provided in the vicinity of the adapter side mount portion of the intermediate adapter is mounted, and a mount portion having a mount center point;
A lens-side connection terminal holding portion in which twelve lens-side connection terminals each having a contact portion connected to each of the twelve adapter-side connection terminals and in contact with the adapter-side connection terminal are disposed;
The twelve lens side connection terminals are:
A first lens side connection terminal to which a first voltage is supplied from the intermediate adapter;
A second lens side connection terminal serving as a ground terminal corresponding to the first voltage;
A third lens side connection terminal to which a first clock signal is input from the intermediate adapter;
A fourth lens side connection terminal to which a first data signal is input from the intermediate adapter in synchronization with the first clock signal;
A fifth lens side connection terminal for outputting a second data signal to the intermediate adapter in synchronization with the first clock signal;
A sixth lens side connection terminal to which a second clock signal is input from the intermediate adapter;
A seventh lens side connection terminal for outputting a third data signal to the intermediate adapter in synchronization with the second clock signal;
An eighth lens side connection terminal for outputting a first asynchronous signal not synchronized with the first clock signal and the second clock signal to the intermediate adapter;
A ninth lens side connection terminal to which a second asynchronous signal not synchronized with the first clock signal and the second clock signal is input from the intermediate adapter;
A tenth lens side connection terminal for outputting a third asynchronous signal not synchronized with the first clock signal and the second clock signal to the intermediate adapter;
Based on the first asynchronous signal output from the eighth lens side connection terminal and the first clock signal input from the third lens side connection terminal, from the intermediate adapter using the fourth lens side connection terminal Receiving the first data signal and transmitting the second data signal to the intermediate adapter using the fifth lens side connection terminal, and the input to the ninth lens side connection terminal Based on the second asynchronous signal, the third asynchronous signal output from the tenth lens side connection terminal, and the second clock signal input from the sixth lens side connection terminal, the seventh lens side connection terminal is A second voltage smaller than a first voltage for transmitting the third data signal to the intermediate adapter using an eleventh lens side connection terminal supplied from the intermediate adapter;
A twelfth lens side connection terminal serving as a ground terminal corresponding to the second voltage;
The positional relationship between at least two of the twelve lens side connection terminals in the circumferential direction around the mount center point is that of the twelve adapter side connection terminals in the circumferential direction around the mount center point. An interchangeable lens, wherein at least two of the positional relationships are different. An intermediate adapter having at least five adapter side connection terminals provided in the vicinity of the adapter side mount portion of the intermediate adapter is attached, and a mount portion having a mount center point;
A lens-side connection terminal holding portion in which at least five lens-side connection terminals are connected to each of the five adapter-side connection terminals and each has a contact portion that contacts one of the adapter-side connection terminals. ,
The five lens side connection terminals are:
A clock input lens side connection terminal to which a clock signal is input from the intermediate adapter;
A data input lens side connection terminal to which the first data signal is input from the intermediate adapter in synchronization with the clock signal;
A data output lens side connection terminal for outputting a second data signal to the intermediate adapter in synchronization with the clock signal;
An asynchronous signal output lens side connection terminal for outputting an asynchronous signal not synchronized with the clock signal to the intermediate adapter;
Based on the asynchronous signal output from the asynchronous signal output lens side connection terminal and the clock signal input from the clock input lens side connection terminal, the data input lens side connection terminal is used to output the second signal from the intermediate adapter. A voltage supply lens side connection in which an operating voltage for receiving one data signal and transmitting the second data signal to the intermediate adapter using the data output lens side connection terminal is supplied from the intermediate adapter Terminal and
Among the five lens side connection terminals in the circumferential direction around the mount center point, the positional relationship of at least two of the five lens side connection terminals is that of the five adapter side connection terminals in the circumferential direction around the mount center point. An interchangeable lens, wherein at least two of the positional relationships are different.

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