Accessory device, imaging device, control method of accessory device and imaging device, and program

Abstract

To provide an accessory device capable of adjusting a focus difference between right-eye and left-eye optical systems at appropriate timing according to a state of an imaging device.SOLUTION: An accessory device (100) attachable to an imaging device (10) includes: a first optical system (101R); a second optical system (101L) arranged parallel to the first optical system; and control means (104) for controlling the first and second optical systems. The control means includes: a first mode for simultaneously driving the first and second optical systems; and a second mode for independently driving the first and second optical systems, and varies timing for changing the first mode to the second mode according to an imaging state.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to an accessory device, an imaging device, a control method for the accessory device and the imaging device, and a program. [Background technology]

[0002] Conventionally, a method for capturing stereoscopic images is known in which a compound lens unit capable of capturing multiple images from different viewpoints is connected to a general monocular camera body. Images captured by this method are recorded as a single image on the camera body. The observer can view a stereoscopic image by displaying the image formed on the left eye side of the image on a device such as a head-mounted display so that the image formed on the right eye side of the image is visible only to the observer's left eye, and the image formed on the left eye side of the image is visible only to the observer's right eye.

[0003] Patent Document 1 discloses a lens device having a first focus adjustment unit connected to both a right eye optical system and a left eye optical system, and a second focus adjustment unit connected to either the right eye optical system or the left eye optical system. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-37539 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the lens device disclosed in Patent Document 1, when the second focus adjustment unit operates during shooting of a moving image or the like, a focus difference occurs between the right eye optical system and the left eye optical system.

[0006] SUMMARY OF THE PRESENT EMBODIMENTS An object of the present invention is to provide an accessory device capable of adjusting the focus difference between the right-eye optical system and the left-eye optical system at appropriate timing in accordance with the state of the imaging device. [Means for solving the problem]

[0007] An accessory device as one aspect of the present invention is an accessory device that can be attached to an imaging device, and includes a first optical system, a second optical system arranged in parallel to the first optical system, and a control means for controlling the first optical system and the second optical system, wherein the control means has a first mode in which the first optical system and the second optical system are driven simultaneously, and a second mode in which the first optical system and the second optical system are driven independently, and the timing for changing from the first mode to the second mode is varied depending on the shooting conditions.

[0008] Other objects and features of the present invention are illustrated in the following examples. Effect of the Invention

[0009] According to the present invention, it is possible to provide an accessory device capable of adjusting the focus difference between the right eye optical system and the left eye optical system at an appropriate timing depending on the state of the imaging device. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a configuration diagram of a camera system in each embodiment. [Diagram 2] FIG. 2 is a configuration diagram of a camera control unit and a lens control unit in each embodiment. [Diagram 3] 5A and 5B are explanatory diagrams for adjusting the focus difference between the right eye lens unit and the left eye lens unit in each embodiment. [Figure 4] 5 is a flowchart showing a control method in which the interchangeable lens in the first embodiment sets a drive mode in response to a communication command from the camera. [Diagram 5] 5 is a flowchart showing a control method in which the interchangeable lens in the first embodiment sets a drive mode using an operation unit. [Figure 6] 5 is a flowchart showing a control method in which the interchangeable lens in the first embodiment sets a drive mode depending on the state of the camera. [Figure 7]10 is a flowchart showing a control method in which a camera in a second embodiment transmits a command to set a drive mode to an interchangeable lens in accordance with a state of the camera. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0012] First, a camera system (imaging system) 1 in each embodiment will be described with reference to FIG. 1. FIG. 1 is a configuration diagram (top view) of the camera system 1. The imaging system 1 has a camera (imaging device) 10 and an interchangeable lens (lens device, accessory device) 100 that can be attached to the camera 10. Each embodiment can also be applied to an imaging system in which the imaging device and the lens device are integrally configured. In each embodiment, the interchangeable lens 100 will be described as an accessory device, but the present invention is not limited to this. Each embodiment can also be applied to an accessory device other than the interchangeable lens 100 (an adapter such as an extender). The adapter is configured to be directly attached to the camera 10 (can be attached between the camera 10 and the interchangeable lens 100) or can be indirectly attached to the camera 10 via the interchangeable lens 100.

[0013] The camera 10 and the interchangeable lens 100 each have a camera mount 24 and a lens mount 103 that are equipped with electrical contacts for supplying power from the camera 10 to the interchangeable lens 100 and for communicating with each other. The interchangeable lens 100 has a right eye lens unit (right eye optical system, first optical system) 101R and a left eye lens unit (left eye optical system, second optical system) 101L arranged in parallel with the right eye lens unit 101R.

[0014] The camera 10 has an image sensor 11, an A / D converter 12, an image processor 13, a display 14, an operation unit 15, a camera controller 17, and a memory unit 18. The image sensor 11 is a photoelectric conversion element such as a CMOS (Complementary Metal-Oxide-Semiconductor) sensor or a CCD (Charge Coupled Device) sensor. The image sensor 11 photoelectrically converts a subject image formed by the right eye lens unit 101R and the left eye lens unit 101L, and outputs an electrical signal (analog electrical signal).

[0015] The A / D conversion unit 12 converts the analog electrical signal output from the imaging element 11 into a digital signal. The image processing unit 13 performs various image processing on the digital signal to generate an image (image data). The image generated by the image processing unit 13 is displayed on the display unit 14 or stored in a storage unit 18 such as a storage medium.

[0016] The operation unit 15 includes a power switch for turning the power of the camera 10 on / off, a shooting switch for starting recording of still images or videos, and a selection / setting switch for setting the camera 10 and the interchangeable lens 100. The camera control unit 17 is a control means including a microcomputer such as a CPU, and controls the image processing unit 13 and communication with the interchangeable lens 100 in response to signals from the operation unit 15 based on user operations.

[0017] The interchangeable lens 100 has prisms 106R, 107R, 106L, and 107L that change the direction of the optical axis by 90 degrees by reflection. The interchangeable lens 100 also has a lens control unit 104. The lens control unit 104 includes a microcomputer that controls the diaphragm (aperture diaphragm) and focus in each optical system in response to a control signal received from the camera control unit 17 through communication with the camera control unit 17 or a user operation of the lens operation unit 115. The lens operation unit 115 includes a setting switch for changing the operation of each optical system, and a ring operation unit for operating optical members such as the focus or diaphragm. The lens control unit 104 controls each unit in response to a user operation of the lens operation unit 115.

[0018] Next, the camera control unit 17 and the lens control unit 104 will be described with reference to Fig. 2. Fig. 2 is a configuration diagram of the camera control unit 17 and the lens control unit 104, and shows the configurations of the camera control unit 17 and the lens control unit 104, as well as terminals for electrical connection via the camera mount 24 and the lens mount 103.

[0019] The LCLK terminal (1-1) is a terminal for communication control signals output from the camera 10 to the interchangeable lens 100. The DCL terminal (1-2) is a terminal for communication data output from the camera 10 to the interchangeable lens 100. The DLC terminal (1-3) is a terminal for communication data output from the interchangeable lens 100 to the camera 10.

[0020] The MIF terminal (1-4) is a terminal for detecting that the interchangeable lens 100 is attached to the camera 10. The microcomputer (camera microcomputer) 20 in the camera control unit 17 detects that the interchangeable lens 100 is attached to the camera 10 based on the voltage of the MIF terminal.

[0021] The TYPE terminal (1-5) is a terminal for detecting the type of interchangeable lens 100 attached to the camera 10. The camera microcomputer 20 detects the type of interchangeable lens 100 attached to the camera 10 based on the voltage of the TYPE terminal. The voltage of the TYPE terminal is generated by a lens type voltage generation unit 113 in the lens control unit 104.

[0022] The VBAT terminal (1-6) is a terminal for supplying a driving power source (VM) used for various operations except communication control from the camera 10 to the interchangeable lens 100. The VDD terminal (1-7) is a terminal for supplying a communication control power source (VDD) used for communication control from the camera 10 to the interchangeable lens 100. The DGND terminal (1-8) is a terminal for connecting the communication control systems of the camera 10 and the interchangeable lens 100 to ground. The PGND terminal (1-9) is a terminal for connecting a mechanical driving system including a motor etc. provided in the camera 10 and the interchangeable lens 100 to ground.

[0023] The camera 10 of this embodiment is selectively fitted with a plurality of types of interchangeable lenses 100 that differ from one another in terms of communication voltage with the camera 10. In the following explanation, a case will be explained in which the camera 10 has a first interchangeable lens and a second interchangeable lens that has a different communication voltage from the first interchangeable lens, as the types of interchangeable lenses 100 that the camera 10 identifies based on the voltage of the TYPE terminal.

[0024] A camera power supply unit 21 provided in the camera control unit 17 converts a battery voltage supplied from a battery (not shown) mounted in the camera 10 into a voltage required for the operation of each circuit. At this time, the camera power supply unit 21 generates voltages V1, V2, V3, and VM.

[0025] The voltage (first voltage) V1 is a power supply voltage serving as a communication control power supply (VDD) for the first and second interchangeable lenses, and is also a communication voltage for the first interchangeable lens. The voltage (second voltage) V2 is a communication voltage for the second interchangeable lens. The voltage (third voltage) V3 is a power supply voltage serving as an operating power supply for the camera microcomputer 20. The voltage VM is a power supply voltage serving as a driving power supply for the first and second interchangeable lenses.

[0026] When the power switch 22 is turned on, the camera microcomputer 20 starts supplying VDD and VM from the camera 10 to the interchangeable lens 100. When the power switch 22 is turned off, the camera microcomputer 20 stops supplying VDD and VM from the camera 10 to the interchangeable lens 100.

[0027] The camera microcomputer 20 communicates with the interchangeable lens 100 via a voltage conversion unit 23. The camera microcomputer 20 has an LCLK_OUT terminal that outputs a communication control signal, a DCL_OUT terminal that outputs communication data to the interchangeable lens 100, and a DLC_IN terminal that receives input of communication data from the interchangeable lens 100. The communication control signal and communication data correspond to communication signals. The camera microcomputer 20 functions as a camera communication means.

[0028] The camera microcomputer 20 also has a MIF_IN terminal for detecting the attachment of the interchangeable lens 100, a TYPE_IN terminal for identifying the type of interchangeable lens 100, and a CNT_V_OUT terminal for outputting a communication voltage switching signal to the voltage conversion unit 23. The camera microcomputer 20 functions as an accessory determination means. The camera microcomputer 20 also has a CNT_VDD_OUT terminal for outputting a power supply signal for the power switch 22, a connection terminal with the image processing unit 13, and a connection terminal with the operation unit 15. The camera microcomputer 20 also controls the operation of the display unit 14 via the display unit control unit 25.

[0029] A microcomputer (lens microcomputer) 111 in the lens control unit 104 communicates with the camera microcomputer 20 via the voltage conversion unit 23. The lens microcomputer 111 has an LCLK_IN terminal that receives an input of a communication control signal, a DLC_OUT terminal that outputs communication data to the camera 10, and a DCL_IN terminal that receives an input of communication data from the camera 10. The lens microcomputer 111 also has connection terminals with the aperture driving units 105R / 105L, the focus driving unit 110, and the focus difference adjustment driving unit 112. The lens control unit 104 also has a lens power supply unit (voltage generation means) 114.

[0030] Here, detection of attachment of the interchangeable lens 100 to the camera 10 will be described. The MIF_IN terminal of the camera microcomputer 20 is pulled up to the power supply by resistor R2 (100 KΩ). Therefore, when the interchangeable lens 100 is not attached, the voltage value is H (High). However, when the interchangeable lens 100 (first interchangeable lens or second interchangeable lens) 100 is attached, the MIF_IN terminal is connected to GND at the interchangeable lens 100. Therefore, regardless of the type of interchangeable lens 100, the voltage value becomes L (Low) when the interchangeable lens 100 is attached.

[0031] The interchangeable lens 100 has aperture drivers 105R and 105L that drive actuators that operate the aperture units 102R and 102L. The interchangeable lens 100 also has a focus driver 110 that operates the focus unit 108. The interchangeable lens 100 also has a focus difference adjustment driver 112 that operates the focus difference adjustment unit 109.

[0032] 1, the focus difference adjustment unit 109 is disposed on the right eye side, but the present invention is not limited to this, and the focus difference adjustment unit 109 may be disposed on the left eye side. In addition, although two aperture drive units 105R and 105L are provided, the present invention is not limited to this, and a configuration in which the aperture units 102R and 102L are driven simultaneously using one aperture drive unit may be used. In addition, the focus drive unit 110 may be an integrated left and right drive mechanism, or separate left and right drive mechanisms may be operated simultaneously by separate motors.

[0033] Next, the focus difference adjustment between the right eye lens unit 101R and the left eye lens unit 101L will be described with reference to Figs. 3(a) and (b). Figs. 3(a) and (b) are explanatory diagrams of the focus difference adjustment between the right eye lens unit 101R and the left eye lens unit 101L. In the interchangeable lens 100, a left-right relative focus difference may occur between the right eye lens unit 101R and the left eye lens unit 101L due to variations in the tilt direction and tilt amount of the image sensor 11 caused by individual differences in the camera 10, or due to a decrease in reliability caused by temperature, humidity, impact, etc. Fig. 3(a) shows an ideal case where the image sensor 11 is not tilted. Fig. 3(b) shows a case where the image sensor 11 is tilted. In the case of Fig. 3(b), even if the right eye lens unit 101R and the left eye lens unit 101L are moved together, it is not possible to simultaneously adjust the focus of each of them. That is, a relative left-right focus difference occurs as a deviation in the focus state between the right eye lens unit 101R and the left eye lens unit 101L.

[0034] Therefore, in each embodiment, the focus position of each of the right eye lens unit 101R and the left eye lens unit 101L can be changed using the focus difference adjustment unit 109 (second drive mode). After adjusting the focus position as shown in Fig. 3(b), the right eye lens unit 101R and the left eye lens unit 101L are moved synchronously using the focus unit 108 (second drive mode). This makes it possible to perform shooting in a state that matches the inclination of the imaging surface.

[0035] In each embodiment, the lens control unit 104 is a control unit that controls the right eye lens unit 101R and the left eye lens unit 101L. The lens control unit 104 has a first driving mode (first mode) and a second driving mode (second mode) as driving modes for the right eye lens unit 101R and the left eye lens unit 101L. The first driving mode is a mode in which the right eye lens unit 101R and the left eye lens unit 101L are driven simultaneously using the focus driving unit 110. The second driving mode is a mode in which the right eye lens unit 101R and the left eye lens unit 101L are driven independently using the focus difference adjustment driving unit 112. The lens control unit 104 also changes the timing of changing from the first driving mode to the second driving mode depending on the shooting state.

[0036] Each embodiment of the present invention will be described below. EXAMPLES

[0037] First, a first embodiment of the present invention will be described with reference to Fig. 4 to Fig. 6. In this embodiment, a method for setting whether the interchangeable lens 100 operates in a first drive mode (first mode) or a second drive mode (second mode) will be described.

[0038] FIG. 4 is a flowchart showing a control method in which the interchangeable lens 100 (lens control unit 104) receives a communication command related to the drive mode from the camera 10 (camera control unit 17) and sets the drive mode based on that communication command.

[0039] First, in step S401, the camera 10 supplies power to the interchangeable lens 100. Next, in step S402, the camera 10 and the interchangeable lens 100 perform ID communication (camera-lens ID communication) with each other. Next, in step S403, the camera 10 determines whether or not the interchangeable lens 100 has a focus difference adjustment drive unit 112. Here, whether or not the interchangeable lens 100 has the focus difference adjustment drive unit 112 may be determined based on the result of the ID communication performed in step S402. If it is determined that the interchangeable lens 100 has the focus difference adjustment drive unit 112, the process proceeds to step S404. On the other hand, if it is determined that the interchangeable lens 100 does not have the focus difference adjustment drive unit 112, this flow ends.

[0040] In step S404, the camera 10 (camera microcomputer 20) determines whether or not the drive mode (lens operation) of the interchangeable lens 100 is set to drive using the focus drive unit 110 according to the settings of the camera 10. Here, the drive mode may be set by a user interface using the display unit 14. The drive mode may also be determined from the state of the operation unit 15. If the lens operation is set to drive using the focus drive unit 110 according to the settings of the camera 10, the process proceeds to step S405. On the other hand, if the lens operation is not set to drive using the focus drive unit 110, the process proceeds to step S407.

[0041] In step S405, the camera 10 transmits a communication command to the interchangeable lens 100 to operate the focus drive unit 110. Then, in step S406, the interchangeable lens 100 sets the first drive mode to operate the focus drive unit 110, and proceeds to step S404.

[0042] In step S407, the camera 10 transmits a communication command to the interchangeable lens 100 to operate the focus difference adjustment drive unit 112. Next, in step S408, the interchangeable lens 100 sets the second drive mode to operate the focus difference adjustment drive unit 112, and proceeds to step S404.

[0043] 4, it becomes possible to change the drive mode of the interchangeable lens 100 every time the settings of the camera 10 (the state of a mode setting means constituting part of the operation unit 15) are changed. Note that the drive mode of the interchangeable lens 100 can be changed by the settings of the camera 10, but is not limited to this. For example, the drive mode may be set or changed depending on the state of the lens operation unit 115.

[0044] FIG. 5 is a flowchart showing a control method for setting the drive mode depending on the state of the lens operation unit 115 (mode setting means constituting a part of the lens operation unit 115).

[0045] First, in step S401, the camera 10 supplies power to the interchangeable lens 100, as in FIG. 4. Next, in step S501, the interchangeable lens 100 determines whether or not the lens operation unit 115 is set to the lens operation by the focus drive unit 110. If the lens operation unit 115 is set to the lens operation by the focus drive unit 110, the process proceeds to step S406. On the other hand, if the lens operation unit 115 is not set to the lens operation by the focus drive unit 110, the process proceeds to step S408. In step S406, the interchangeable lens 100 sets the first drive mode to operate the focus drive unit 110, and proceeds to step S501. In step S408, the interchangeable lens 100 sets the second drive mode to operate the focus difference adjustment drive unit 112, and proceeds to step S501.

[0046] 5, the interchangeable lens 100 sets or changes the drive mode of the interchangeable lens 100 in accordance with the state of the lens operation unit 115. In this case, the camera 10 and the interchangeable lens 100 do not need to perform the communication described in step S402 in FIG.

[0047] FIG. 6 is a flowchart showing a control method in which the interchangeable lens 100 receives the state of the camera 10 and sets the drive mode.

[0048] First, in step S401, the camera 10 supplies power to the interchangeable lens 100. Then, in step S601, the camera 10 transmits the shooting state to the interchangeable lens 100. Here, the shooting state is information such as whether still images are being shot (still images are being shot continuously) or whether a video is being shot. However, the shooting state is not limited to these, and may be, for example, information such as the state of an imaging operation means (release button) constituting the operation unit 15 of the camera 10 (whether the imaging operation means is being pressed by the user). In this case, the camera 10 can transmit the state of the imaging operation means to the interchangeable lens 100.

[0049] Next, in step S501, the interchangeable lens 100 determines whether or not the lens operation unit 115 is set to lens operation by the focus drive unit 110. If the lens operation unit 115 is set to lens operation by the focus drive unit 110, the process proceeds to step S406. On the other hand, if the lens operation unit 115 is not set to lens operation by the focus drive unit 110, the process proceeds to step S602. In step S406, the interchangeable lens 100 sets the first drive mode to operate the focus drive unit 110, and proceeds to step S601.

[0050] In step S602, the interchangeable lens 100 determines whether the shooting state received from the camera 10 in step S601 is video shooting or not. If the shooting state is video shooting, the process proceeds to step S601. On the other hand, if the shooting state is video shooting, the process proceeds to step S408. In step S408, the interchangeable lens 100 sets the second drive mode to operate the focus difference adjustment drive unit 112, and proceeds to step S601.

[0051] According to this embodiment, it is possible to change the drive mode of the interchangeable lens 100 at an appropriate timing based on the shooting state of the camera 10. In Fig. 6, in step S602, it is determined whether the shooting state of the camera 10 is during video shooting, but this is not limited to this. Instead of determining whether the shooting state is during video shooting, for example, it may be determined whether the shooting state is during still image shooting (continuous shooting of still images). Alternatively, in step S602, it may be determined whether the imaging operation means (release button) constituting the operation unit 15 is in a state pressed (being pressed) by the user.

[0052] 6, the state of the lens operation unit 115 is determined in step S501, but this is not limiting. The state of the lens operation unit 115 may be determined after the determination in step S602. This allows the interchangeable lens 100 to change the drive mode only when the shooting state of the camera 10 is not during video shooting, etc.

[0053] As described above, the lens control unit 104 changes the timing of changing from the first drive mode to the second drive mode depending on the shooting state. Preferably, when the lens control unit 104 acquires an instruction to change from the first drive mode to the second drive mode while the first drive mode is set and the shooting state is a predetermined state, the lens control unit 104 maintains the setting of the first drive mode during the predetermined state. More preferably, the lens control unit 104 changes the setting of the first drive mode to the setting of the second drive mode after the predetermined state ends. Here, the predetermined state is, for example, during video shooting, continuous shooting of still images, or a state in which the imaging operation means is pressed. EXAMPLES

[0054] Next, a second embodiment of the present invention will be described with reference to Fig. 7. In this embodiment, a case will be described in which the camera 10 instructs the interchangeable lens 100 to set a first drive mode (first mode) and a second drive mode (second mode) through communication from the camera 10, and the interchangeable lens 100 sets the drive mode.

[0055] FIG. 7 is a flowchart showing a control method in which the camera 10 transmits a command to set the drive mode to the interchangeable lens 100 depending on the state of the camera 10.

[0056] First, in step S401, the camera 10 supplies power to the interchangeable lens 100. Next, in step S402, the camera 10 and the interchangeable lens 100 perform ID communication (camera-lens ID communication) with each other. Next, in step S403, the camera 10 determines whether or not the interchangeable lens 100 has a focus difference adjustment drive unit 112. Here, whether or not the interchangeable lens 100 has the focus difference adjustment drive unit 112 may be determined based on the result of the ID communication performed in step S402. If it is determined that the interchangeable lens 100 has the focus difference adjustment drive unit 112, the process proceeds to step S404. On the other hand, if it is determined that the interchangeable lens 100 does not have the focus difference adjustment drive unit 112, this flow ends.

[0057] Next, in step S701, the camera 10 transmits a communication command (second communication command) to the interchangeable lens 100 to instruct the interchangeable lens 100 to set the drive mode through communication from the camera 10 (to issue a change instruction based on the first communication command). For example, after receiving the communication command in step S701, the interchangeable lens 100 will not change the drive mode unless it receives communication (first communication command) for setting the drive mode from the camera 10, even if it acquires an instruction to change the drive mode from the lens operation unit 115.

[0058] Next, in step S702, the interchangeable lens 100 transmits the state of the lens operation unit 115 to the camera 10. Here, the state of the lens operation unit 115 may be a state indicating whether the drive mode set by the lens operation unit 115 is the first drive mode or the second drive mode.

[0059] Next, in step S703, the camera 10 determines whether or not the state of the lens operation unit 115 received from the interchangeable lens 100 is set to lens operation by the focus drive unit 110. If the state of the lens operation unit 115 is set to lens operation by the focus drive unit 110, the process proceeds to step S405. On the other hand, if the state of the lens operation unit 115 is not set to lens operation by the focus drive unit 110, the process proceeds to step S602. Note that subsequent steps S405 to S408 are the same as those in FIG. 4, and step S602 is the same as that in FIG. 6, and therefore description thereof will be omitted.

[0060] As a result, while in the first embodiment the interchangeable lens 100 changes the drive mode based on the shooting state of the camera 10, in the present embodiment the camera 10 instructs the interchangeable lens 100 to change the drive mode, making it possible to select an appropriate drive mode based on multiple conditions.

[0061] In Fig. 7, the drive mode transmitted by the camera 10 is set according to the state of the lens operation unit 115 received by the camera 10 in step S702, but this embodiment is not limited to this. For example, as in step S404 in Fig. 4, information regarding the drive mode set by the operation unit 15 of the camera 10 may be transmitted to the interchangeable lens 100. Also, the drive mode may be transmitted based on the settings of an accessory device (an adapter such as an extender) other than the interchangeable lens 100 connected to the camera 10. Note that there is no limitation on which drive mode the camera 10 transmits from among the multiple drive mode settings.

[0062] 7, the state of the lens operation unit 115 received in step S703 is determined, but the state of the lens operation unit 115 received after step S602 may be determined. This allows the interchangeable lens 100 to change the drive mode depending on the shooting state of the camera 10, etc.

[0063] (Other Examples) The present invention can also be realized by a process in which a program for implementing one or more of the functions of the above-mentioned embodiments is supplied to a system or device via a network or a storage medium, and one or more processors in a computer of the system or device read and execute the program. It can also be realized by a circuit (e.g., ASIC) that implements one or more of the functions.

[0064] According to each embodiment, it is possible to provide an accessory device, an imaging device, a control method for the accessory device and the imaging device, and a program that are capable of adjusting the focus difference between the right eye optical system and the left eye optical system at an appropriate timing depending on the state of the imaging device.

[0065] The disclosure of each embodiment includes the following configurations and methods. (Configuration 1) An accessory device that can be attached to an imaging device, A first optical system; A second optical system arranged in parallel with the first optical system; a control unit for controlling the first optical system and the second optical system, The control means a first mode in which the first optical system and the second optical system are driven simultaneously, and a second mode in which the first optical system and the second optical system are driven independently, An accessory device, characterized in that the timing of changing from the first mode to the second mode is varied depending on a photographing state. (Configuration 2) The accessory device described in configuration 1, characterized in that when the control means receives an instruction to change from the first mode to the second mode while the first mode is set and the shooting state is in a predetermined state, the control means maintains the setting of the first mode while the shooting state is in the predetermined state. (Configuration 3) 3. The accessory device according to claim 2, wherein the control means changes the setting of the first mode to the setting of the second mode after the predetermined state ends. (Configuration 4) The control means acquires information regarding the photographing state from the imaging device, 4. The accessory device according to configuration 2 or 3, wherein the predetermined state is at least one of the shooting state being during moving image shooting or during continuous shooting of still images. (Configuration 5) the control means acquires information about the shooting state from the imaging device based on a state of an imaging operation means of the imaging device that is operable by a user; 4. The accessory device according to configuration 2 or 3, wherein the predetermined state is a state in which the imaging operation means is pressed. (Configuration 6) 6. The accessory device according to any one of configurations 2 to 5, wherein the control means obtains the change instruction based on a first communication command received from the imaging device. (Configuration 7) 6. The accessory device according to any one of configurations 2 to 5, wherein the control means acquires the change instruction based on a state of a mode setting means operable by a user. (Configuration 8) The accessory device described in configuration 7, characterized in that when the control means receives a second communication command from the imaging device instructing it to make the change instruction based on the first communication command, it does not change from the first mode to the second mode based on the change instruction based on the state of a mode setting means of the imaging device that can be operated by a user. (Configuration 9) The accessory device according to any one of configurations 1 to 8, wherein the accessory device is a lens device. (Configuration 10) 9. The accessory device according to any one of configurations 1 to 8, wherein the accessory device is an adapter that can be directly attached to the imaging device or that can be indirectly attached to the imaging device via a lens device. (Configuration 11) An imaging device to which an accessory device can be attached, the accessory device having a first optical system and a second optical system arranged in parallel with the first optical system, a control unit that controls the first optical system and the second optical system by communicating with the accessory device; The control means a first mode in which the first optical system and the second optical system are driven simultaneously, and a second mode in which the first optical system and the second optical system are driven independently, An imaging apparatus, characterized in that the timing of changing from the first mode to the second mode is varied depending on a shooting state. (Configuration 12) The imaging device described in configuration 11, characterized in that when the control means receives an instruction to change from the first mode to the second mode while the first mode is set and the shooting state is in a predetermined state, the control means maintains the setting of the first mode while the shooting state is in the predetermined state. (Configuration 13) 13. The imaging apparatus according to claim 12, wherein the control means changes the setting of the first mode to the setting of the second mode after the predetermined state ends. (Method 1) A method for controlling an accessory device that can be attached to an imaging device, comprising: a step of simultaneously driving a first optical system and a second optical system arranged in parallel with the first optical system in a first mode; obtaining an instruction to change from the first mode to a second mode in which the first optical system and the second optical system are driven independently; and changing the mode from the first mode to the second mode in accordance with the change instruction; A method for controlling an accessory device, comprising: varying a timing for changing from the first mode to the second mode depending on a photographing state. (Method 2) A method for controlling an imaging device to which an accessory device can be attached, comprising: a step of simultaneously driving a first optical system and a second optical system arranged in parallel with the first optical system in a first mode; obtaining an instruction to change from the first mode to a second mode in which the first optical system and the second optical system are driven independently; and changing the mode from the first mode to the second mode in accordance with the change instruction; A control method for an imaging apparatus, comprising: varying a timing for changing from the first mode to the second mode depending on a shooting state. (Configuration 16) A program for causing a computer to execute the accessory device control method according to Method 1. (Configuration 17) A program for causing a computer to execute the method for controlling an imaging device according to method 2.

[0066] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. [Explanation of symbols]

[0067] 10 Camera (imaging device) 100 Interchangeable lenses (accessory devices) 101R Right eye lens unit (first optical system) 101L Left eye lens unit (second optical system)

Claims

1. An accessory device that can be attached to an imaging device, A first optical system; and A second optical system arranged in parallel with the first optical system; a control unit for controlling the first optical system and the second optical system, The control means a first mode in which the first optical system and the second optical system are driven simultaneously, and a second mode in which the first optical system and the second optical system are driven independently, 13. An accessory device, comprising: an accessory device which changes a timing of changing from the first mode to the second mode depending on a photographing state.

2. The accessory device according to claim 1, characterized in that when the control means receives an instruction to change from the first mode to the second mode while the first mode is set and the shooting state is in a predetermined state, the control means maintains the setting of the first mode while the shooting state is in the predetermined state.

3. 3. The accessory device according to claim 2, wherein the control means changes the setting of the first mode to the setting of the second mode after the predetermined state ends.

4. The control means acquires information regarding the photographing state from the imaging device, 3. The accessory device according to claim 2, wherein the predetermined state is at least one of the image capturing state being during moving image capturing and continuous still image capturing.

5. the control means acquires information about the shooting state from the imaging device based on a state of an imaging operation means of the imaging device that is operable by a user; 3. The accessory device according to claim 2, wherein the predetermined state is a state in which the image capture operation means is pressed.

6. The accessory device according to claim 2 , wherein the control means acquires the change instruction based on a first communication command received from the imaging device.

7. 3. The accessory device according to claim 2, wherein the control means acquires the change instruction based on a state of a mode setting means operable by a user.

8. The accessory device described in claim 7, characterized in that when the control means receives a second communication command from the imaging device instructing it to make the change instruction based on the first communication command, it does not change from the first mode to the second mode based on the change instruction based on the state of a mode setting means of the imaging device that can be operated by a user.

9. The accessory device according to any one of claims 1 to 8, wherein the accessory device is a lens device.

10. 9. The accessory device according to claim 1, wherein the accessory device is an adaptor that can be directly attached to the imaging device or that can be indirectly attached to the imaging device via a lens device.

11. An imaging device to which an accessory device can be attached, the accessory device having a first optical system and a second optical system arranged in parallel with the first optical system, a control unit that controls the first optical system and the second optical system by communicating with the accessory device; The control means a first mode in which the first optical system and the second optical system are driven simultaneously, and a second mode in which the first optical system and the second optical system are driven independently, An imaging apparatus, characterized in that the timing of changing from the first mode to the second mode is varied depending on a photographing state.

12. 12. The imaging device according to claim 11, wherein when the control means receives an instruction to change the mode from the first mode to the second mode while the first mode is set and the shooting state is in a predetermined state, the control means maintains the setting of the first mode while the shooting state is in the predetermined state.

13. 13. The imaging apparatus according to claim 12, wherein the control means changes the setting of the first mode to the setting of the second mode after the predetermined state ends.

14. A method for controlling an accessory device that can be attached to an imaging device, comprising: simultaneously driving a first optical system and a second optical system arranged in parallel with the first optical system in a first mode; obtaining an instruction to change from the first mode to a second mode in which the first optical system and the second optical system are driven independently; and changing the mode from the first mode to the second mode in accordance with the change instruction; 11. A method for controlling an accessory device, comprising: varying a timing for changing from the first mode to the second mode depending on a photographing state.

15. A method for controlling an imaging device to which an accessory device can be attached, comprising: simultaneously driving a first optical system and a second optical system arranged in parallel with the first optical system in a first mode; obtaining an instruction to change from the first mode to a second mode in which the first optical system and the second optical system are driven independently; and changing the mode from the first mode to the second mode in accordance with the change instruction; A method for controlling an image capture apparatus, comprising: varying a timing for changing from the first mode to the second mode depending on a photographing state.

16. A program for causing a computer to execute the accessory device control method according to claim 14.

17. A program for causing a computer to execute the method for controlling an image pickup apparatus according to claim 15.

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