Accessory apparatus

Abstract

To provide an accessory apparatus that can prevent a state in which appropriate image capturing cannot be performed.SOLUTION: An accessory apparatus is attachable to an imaging apparatus and switchable between a first mode and a second mode. The accessory apparatus includes: a first optical system; a second optical system arranged in parallel with the first optical system; a driving section that moves at least one of the first optical system and the second optical system; and control means that drives the driving section to simultaneously move the first optical system and the second optical system in the first mode and drives the driving section to move one of the first optical system and the second optical system in a second mode.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an accessory device. [Background technology]

[0002] Conventionally, a lens is known in which a pair of left and right optical systems are arranged at a predetermined distance (baseline length) apart, and two image circles are formed in parallel on one imaging element. In such a lens, images formed by the pair of left and right optical systems are recorded as moving or still images for the left and right eyes, respectively, and when viewed using a 3D display or VR goggles during playback, the image for the right eye is projected on the right eye of the viewer, and the image for the left eye is projected on the left eye. At this time, images with parallax are projected on the right and left eyes due to the baseline length of the pair of left and right optical systems, so that the viewer can get a three-dimensional effect. Patent Document 1 discloses a lens device equipped with a mechanism for simultaneously adjusting the focus of the pair of left and right optical systems and a mechanism for relatively adjusting each of the left and right optical systems. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-37539 A Summary of the Invention [Problem to be solved by the invention]

[0004] The lens device of Patent Document 1 is based on the premise that a member for simultaneously adjusting the focus of the left and right integrated optical systems and a member for relatively adjusting each of the left and right optical systems are manually operated. Therefore, if each mechanism is motorized, if one of the optical systems is driven against the user's intention or if an abnormality occurs in one of the mechanisms, it may occur that AF does not work, shooting is performed with the left and right out of focus, or other situations may occur in which appropriate shooting is not possible.

[0005] An object of the present invention is to provide an accessory device that can prevent a situation in which appropriate photography cannot be performed. [Means for solving the problem]

[0006] An accessory device according to one aspect of the present invention is an accessory device that can be attached to an imaging device and is switchable between a first mode and a second mode, and is characterized in having a first optical system, a second optical system arranged in parallel to the first optical system, a drive unit that moves at least one of the first optical system and the second optical system, and a control means that drives the drive unit so that the first optical system and the second optical system move simultaneously in the first mode, and drives the drive unit so that one of the first optical system and the second optical system moves in the second mode. Effect of the Invention

[0007] According to the present invention, it is possible to provide an accessory device that can prevent a situation in which appropriate photographing cannot be performed. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a configuration diagram of a camera system according to a first embodiment. [Diagram 2] 1A and 1B are diagrams illustrating a cause of focus shifting between left and right optical systems. [Diagram 3] FIG. 13 is a diagram showing the camera system after left and right focus deviations have been adjusted. [Figure 4] FIG. 13 is a diagram showing the camera system after correcting left and right focus deviations and performing focus adjustment. [Diagram 5] 5 is a flowchart showing a start-up process of the interchangeable lens. [Figure 6] 10 is a flowchart showing processing during startup of the interchangeable lens. [Figure 7] 13 is a flowchart showing a process of recovering from an abnormal state in a full focus mode. [Figure 8] 11 is a flowchart showing a process of recovering from an abnormal state in a left-right focus deviation adjustment mode. [Figure 9] FIG. 11 is a configuration diagram of a camera system according to a second embodiment. [Figure 10] 13 is a flowchart showing a recovery process from an abnormal state in each mode of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to refer to the same components, and duplicated descriptions will be omitted. EXAMPLES

[0010] 1 is a configuration diagram of a camera system according to an embodiment of the present invention. The camera system includes an interchangeable lens (lens device, accessory device) 100 and a camera body (imaging device) 200. The interchangeable lens 100 is mechanically and electrically connected to the camera body 200 via an interchangeable lens mount 101 and a camera body mount 201. The interchangeable lens 100 receives power from the camera body 200 via a power terminal (not shown) provided on the mount described above. The interchangeable lens 100 uses the power received from the camera body 200 to control various actuators (to be described later) and a lens microcomputer (hereinafter referred to as a lens microcomputer) 110. The camera body 200 also communicates with the interchangeable lens 100 via a communication terminal (not shown) provided on the mount described above, and controls the interchangeable lens 100 by transmitting control commands.

[0011] In this embodiment, the interchangeable lens 100 is configured to be attachable to the camera body 200, but may be configured integrally with the camera body 200. Also, in this embodiment, the interchangeable lens 100 is described as an accessory device, but the present invention is not limited to this. The present invention is also applicable to accessory devices other than the interchangeable lens 100 (adapters such as extenders). The adapter is configured to be directly attachable to the camera body 200 (attachable between the camera body 200 and the interchangeable lens 100) or to be indirectly attachable to the camera body 200 via the interchangeable lens 100. <About the camera body> The camera body 200 has an image sensor 202 including a phase difference AF sensor etc., a signal processing unit 203, a recording processing unit 204, a display unit 205, an operation unit 206, and a camera microcomputer (hereinafter referred to as camera microcomputer) 207.

[0012] The image sensor 202 photoelectrically converts a subject image formed by the imaging optical system in the interchangeable lens 100 and outputs an electrical signal (analog signal). The analog signal from the image sensor 202 is converted into a digital signal by an A / D conversion circuit (not shown).

[0013] The signal processor 203 performs various image processing on the digital signal from the A / D converter circuit to generate a video signal. The signal processor 203 also generates, from the video signal, focus information indicating the contrast state of the subject image, that is, the focus state of the imaging optical system, and luminance information indicating the exposure state.

[0014] Furthermore, the image sensor 202 can detect the focus state of the subject image by a phase difference detection method. The signal processor 203 processes a phase difference signal of a pair of subject images obtained from light incident on a focus detection pixel included in the image sensor 202 via a microlens that performs pupil division, determines a defocus amount corresponding to the phase difference signal, and generates focus information.

[0015] The signal processing unit 203 outputs the video signal to the display unit 205, and the display unit 205 displays the video signal as a live view image used to check the composition, focus state, etc. The display unit 205 is specifically a rear liquid crystal display or an electronic viewfinder of the camera body 200. The signal processing unit 203 also outputs the video signal to the recording processing unit 204, and the recording processing unit 204 stores the video signal as still images or moving image data in an external memory (not shown) or the like.

[0016] The camera microcomputer 207 controls the camera body 200 in response to inputs from an imaging instruction switch and various setting switches included in the operation unit 206. The camera microcomputer 207 also transmits control commands to the lens microcomputer 110 regarding the light amount adjustment operation of the aperture units 104R and 104L in response to brightness information and the focus adjustment operation in response to focus information including a defocus amount. <About interchangeable lenses> The interchangeable lens 100 has an imaging optical system, various control units that control various actuators capable of driving the imaging optical system, an operation ring (operation member) 111, a SW operation unit (operation unit) 112, and a lens microcomputer 110.

[0017] The lens microcomputer 110 is a control means that controls the operation of each part in the interchangeable lens 100, and receives control commands transmitted from the camera body 200 and requests to transmit lens data. The lens microcomputer 110 also performs lens control corresponding to the control commands and transmits lens data corresponding to the transmission request to the camera body 200. Furthermore, the interchangeable lens 100 has a function of transitioning from an active mode, which is a normal operating state, to a sleep mode, which is a low power consumption state, in response to a sleep command from the camera body 200. The sleep mode is a state in which the power supply to the peripheral circuits of the interchangeable lens 100 is cut off, the clock oscillation circuit of the lens microcomputer 110 is stopped, a low power consumption state is realized, and operation is stopped. The interchangeable lens 100 transitions to the active mode in response to a sleep release command from the camera body 200, and performs normal operations such as focusing and aperture.

[0018] The lens microcomputer 110 issues commands to the aperture control unit 109, the whole focus control unit 106, and the right eye focus control unit 108 in response to a command related to light amount adjustment and a command related to focusing among the control commands. Then, the lens microcomputer 110 drives the aperture units 104R and 104L, the whole focus driving unit 102, and the right eye focus driving unit 103 to perform autofocus processing that controls light amount adjustment processing and focus adjustment operation. Furthermore, the lens microcomputer 110 issues commands to the whole focus control unit 106 and the right eye focus control unit 108 according to the operation amount of the operation ring 111. Then, the lens microcomputer 110 can also drive the whole focus driving unit 102 and the right eye focus driving unit 103 to perform focus adjustment operation by so-called manual focus. The operation amount of the operation ring 111 can be calculated by the lens microcomputer 110 by calculating a signal output from a sensor such as a photointerrupter (not shown).

[0019] The imaging optical system includes a right-eye optical system and a left-eye optical system arranged in parallel to each other. One of the left and right optical systems functions as a first optical system, and the other functions as a second optical system. Each optical system includes a field lens, a prism that folds the light beam and guides it to the imaging element 202, and an aperture unit that adjusts the amount of light. The left and right optical systems form two image circles for the imaging element 202, and are arranged so that the image circles do not overlap as much as possible. Since the two circular images formed on the imaging element 202 have parallax due to the left and right optical systems, it is possible to view them as a three-dimensional VR image by using a head-mounted display or the like.

[0020] When the lens microcomputer 110 receives a focus drive command from the camera body 200, it issues a command to the overall focus control unit 106 to drive the overall focus drive actuator 105. The focus drive command includes the drive amount of the overall focus drive unit 102 required to focus on the subject based on the defocus amount calculated by the camera body 200. The overall focus drive unit 102 moves the right eye optical system and the left eye optical system together, making it possible to adjust the focus of both the left and right eyes. However, as will be described later, each image sensor 202 has its own inclination, and so left and right focus deviations may occur.

[0021] FIG. 2 is an explanatory diagram of the cause of left and right optical system focus deviation. The right eye optical system and the left eye optical system may cause left and right focus deviation due to the variation in the tilt of the image sensor 202 due to the individual difference of the camera body 200 and the reliability change (temperature, humidity, impact, etc.). As shown in FIG. 2(A), it is ideal that the imaging surface of the image sensor 202 is not tilted, but due to the individual difference of the camera body 200, the imaging surface may tilt as shown in FIG. 2(B). In the state of FIG. 2(B), even if you try to focus, the left and right optical systems move in the same way, so you cannot focus on the left and right at the same time. In this embodiment, it is possible to eliminate left and right focus deviation by providing a right eye focus driving unit 103.

[0022] FIG. 3 is a diagram showing a camera system after adjusting (eliminating) left-right focus deviation for the camera body 200 in a state in which the imaging surface of the image sensor 202 is inclined as shown in FIG. 2(B). As shown by the arrow A, the left-right focus deviation is eliminated by moving only the right-eye optical system toward the subject side with respect to the left-eye optical system. Here, an example of an operation for achieving the state of FIG. 3 will be described. The user checks the left-right focus deviation from the image displayed on the display unit 205. If there is left-right focus deviation, the user operates the operation ring 111 to move the right-eye optical system. At this time, the lens microcomputer 110 acquires operation amount information of the operation ring 111, and issues a drive command to the right-eye focus control unit 108 based on the acquired operation amount. The right-eye focus control unit 108 drives the right-eye focus drive actuator 107, which is a stepping motor, according to the drive command. As a result, the right-eye focus drive unit 103 is driven. Specifically, a lead screw coaxial with the rotor of the right eye focus drive actuator 107 rotates, and the right eye focus drive unit 103 mechanically connected to a rack (not shown) meshed with the lead screw is driven to perform focus adjustment. Note that the driving force that rotates the stepping motor may be used to rotate a cam barrel (not shown) by a reduction mechanism of a gear unit, and the right eye focus drive unit 103 that cam-engages with the cam barrel may be driven in the optical axis direction to perform extension and retraction operations, thereby performing focus adjustment. The user can eliminate left-right focus deviation by repeating the above-mentioned operations based on the image displayed on the display unit 205. In this state, the user starts shooting.

[0023] FIG. 4 is a diagram showing the camera system after adjusting the left and right focus deviations and performing focus adjustment. As shown by the arrow B, the position of the image formed by the left and right optical systems is adjusted by driving the overall focus driving unit 102. The camera body 200 transmits a focus driving command to the interchangeable lens 100 based on the defocus amount obtained from the image sensor 202. When the lens microcomputer 110 receives the focus driving command, it calculates the driving amount of the overall focus driving unit 102 and issues a driving command to the overall focus control unit 106. The overall focus control unit 106 drives the overall focus driving actuator 105. This drives the overall focus driving unit 102. In this embodiment, the overall focus driving actuator 105 is a stepping motor, but may be a VCM or an ultrasonic motor. The camera body 200 performs autofocus by adjusting the focus of the interchangeable lens 100 until the defocus amount becomes close to 0.

[0024] The interchangeable lens 100 is configured to be switchable between an overall focus mode (first mode) in which the left and right optical systems are adjusted simultaneously and a left-right difference focus adjustment mode (second mode) in which the left and right optical systems are adjusted relatively to each other. The overall focus mode is a mode in which the left and right optical systems are moved simultaneously to adjust the focus. The left-right difference focus adjustment mode is a mode in which one optical system is moved relative to the other optical system in order to eliminate left-right focus deviation. The lens microcomputer 110 drives the drive unit so that the left and right optical systems move simultaneously in the overall focus mode, and drives the drive unit so that one of the left and right optical systems moves in the left-right difference focus adjustment mode. Here, the drive unit is composed of a plurality of drive units each of which moves at least one of the left and right optical systems, and in this embodiment, it is composed of an overall focus drive unit 102 and a right eye focus drive unit 103. In this embodiment, the lens microcomputer 110 drives the overall focus drive unit 102 in the overall focus mode, and drives the right eye focus drive unit 103 in the left-right difference focus adjustment mode. Although this embodiment shows a configuration in which the right eye optical system is moved in the left-right difference focus adjustment mode, a configuration in which the left eye optical system is moved may also be used.

[0025] The mode is switched according to the state of the SW operation unit 112 or a mode switching command from the camera body 200. In this embodiment, the mode is switched (set) according to the state of the SW operation unit 112. However, the actual mode transition is performed based on switching conditions described below, and the mode is ultimately switched to one according to the state of the SW operation unit 112 or an instruction from the camera body 200. If the switching conditions are not met at the time of determination, the mode before switching is maintained, and the mode transition is performed after the switching conditions are met. Also, when the interchangeable lens 100 is started up, it is always set to the full focus mode.

[0026] FIG. 5 is a flowchart showing the processing (start-up processing of the interchangeable lens 100) when the interchangeable lens 100 is attached to the camera body 200 and the power is turned on, and the lens microcomputer 110 starts up.

[0027] In step S101, the lens microcomputer 110 performs an initialization process. In the initialization process, the internal power supply of the interchangeable lens 100 is supplied, the outputs of various sensors are read, and the like.

[0028] In step S102, the lens microcomputer 110 sets the mode to the full focus mode, and waits in this state until a focus reset command (reset process command) is received from the camera body 200.

[0029] In step S103, the lens microcomputer 110 determines whether or not a focus reset command has been received from the camera body 200. If the lens microcomputer 110 determines that a focus reset command has been received, it executes the process of step S104, and if it determines that the focus reset command has not been received, it repeats the process of this step.

[0030] In step S104, the lens microcomputer 110 causes the whole focus control unit 106 to perform a reset process (return operation) of the whole focus driving unit 102. The reset process is a process of detecting the position of the whole focus driving unit 102 by a sensor such as a photointerrupter (not shown) and determining the coordinate position.

[0031] In step S105, the lens microcomputer 110 determines whether or not the reset process of the whole focus driving unit 102 is completed. If the lens microcomputer 110 determines that the reset process of the whole focus driving unit 102 is completed, it executes the process of step S106, and if it determines that the reset process of the whole focus driving unit 102 is not completed, it repeats the process of this step.

[0032] In step S106, the lens microcomputer 110 determines whether the whole focus driving unit 102 has stopped. If the lens microcomputer 110 determines that the whole focus driving unit 102 has stopped, it executes the process of step S107, and if it determines that the whole focus driving unit 102 has not stopped, it repeats the process of this step.

[0033] In step S107, the lens microcomputer 110 switches (sets) the mode to the left-right difference focus adjustment mode.

[0034] In step S108, the lens microcomputer 110 causes the right eye focus control unit 108 to perform a reset process of the right eye focus driving unit 103. The reset process is a process of determining the coordinate position of the right eye focus driving unit 103, similar to the whole focus driving unit 102.

[0035] In step S109, the lens microcomputer 110 determines whether or not the reset process of the right eye focus driving unit 103 is completed. If the lens microcomputer 110 determines that the reset process of the right eye focus driving unit 103 is completed, it executes the process of step S110, and if it determines that the reset process of the right eye focus driving unit 103 is not completed, it repeats the process of this step.

[0036] In step S110, the lens microcomputer 110 determines whether the state of the SW operation unit 112 is the left-right focus adjustment mode. If the lens microcomputer 110 determines that the state of the SW operation unit 112 is the left-right focus adjustment mode, it ends this flow, and if it determines that the state is not the left-right focus adjustment mode, it executes the process of step S111.

[0037] In step S111, the lens microcomputer 110 determines whether the right eye focus driving unit 103 is stopped. If the lens microcomputer 110 determines that the right eye focus driving unit 103 is stopped, it executes the process of step S112, and if it determines that the right eye focus driving unit 103 is not stopped, it repeats the process of this step.

[0038] In step S112, the lens microcomputer 110 sets the mode to the full focus mode.

[0039] It should be noted that in the startup process of the interchangeable lens 100, it is not necessarily required to perform a reset process of the right eye focus driving unit 103. The right eye focus driving unit 103 requires adjustment when the user recognizes left-right focus deviation, and therefore does not need to be driven when no focus deviation occurs. In other words, it is not necessarily required to determine the coordinate position of the right eye focus driving unit 103, and it is possible to realize the focus adjustment function as long as the coordinate position of the whole focus driving unit 102 is determined. Therefore, after the process of step S105, the startup process of the interchangeable lens 100 may be terminated.

[0040] FIG. 6 is a flowchart showing the process of mode transition during startup of the interchangeable lens 100 (processing during startup).

[0041] In step S201, the lens microcomputer 110 determines whether the state of the SW operation unit 112 is the left-right focus adjustment mode. If the lens microcomputer 110 determines that the state of the SW operation unit 112 is the left-right focus adjustment mode, it executes the process of step S202, and if it determines that the state is not the left-right focus adjustment mode, it executes the process of step S205.

[0042] In step S202, the lens microcomputer 110 determines whether the currently set mode is the full focus mode. If the lens microcomputer 110 determines that the currently set mode is the full focus mode, it executes the process of step S203, and if it determines that the currently set mode is not the full focus mode (the left-right difference focus adjustment mode), it executes the process of step S201.

[0043] In step S203, the lens microcomputer 110 determines whether the whole focus driving unit 102 has stopped. If the lens microcomputer 110 determines that the whole focus driving unit 102 has stopped, it executes the process of step S204, and if it determines that the whole focus driving unit 102 has not stopped, it repeats the process of this step.

[0044] In step S204, the lens microcomputer 110 sets the mode to the left-right difference focus adjustment mode.

[0045] In step S205, it is determined whether the currently set mode is the left-right difference focus adjustment mode. If the lens microcomputer 110 determines that the currently set mode is the left-right difference focus adjustment mode, it executes the process of step S206, and if it determines that the currently set mode is not the left-right difference focus adjustment mode (the current mode is the whole focus mode), it executes the process of step S201.

[0046] In step S206, the lens microcomputer 110 determines whether the right eye focus driving unit 103 is stopped. If the lens microcomputer 110 determines that the right eye focus driving unit 103 is stopped, it executes the process of step S207, and if it determines that the right eye focus driving unit 103 is not stopped, it repeats the process of this step.

[0047] In step S207, the lens microcomputer 110 sets the mode to the full focus mode.

[0048] The full focus mode is a mode in which focus adjustment is performed by driving the full focus drive unit 102 in response to a focus drive command from the camera body 200 or a manual focus operation using the operation ring 111. However, if the drive mechanism including the full focus drive unit 102 is in an abnormal state, proper focus adjustment cannot be performed, and so it is necessary to restore the mechanism to an appropriate state. An example of an abnormal state is loss of synchronism of a stepping motor.

[0049] The process of returning from an abnormal state will be described below with reference to Fig. 7. Fig. 7 is a flow chart showing the process of returning from an abnormal state in the full focus mode.

[0050] In step S301, the lens microcomputer 110 determines whether or not an abnormal state of the drive mechanism including the overall focus drive unit 102 has been detected. If the lens microcomputer 110 determines that an abnormal state of the drive mechanism including the overall focus drive unit 102 has been detected, it executes the process of step S302, and if it determines that an abnormal state of the drive mechanism including the overall focus drive unit 102 has not been detected, it executes the process of step S306.

[0051] In step S302, the lens microcomputer 110 notifies the camera body 200 of the abnormal state of the drive mechanism.

[0052] In step S303, the lens microcomputer 110 determines whether or not a focus reset command has been received from the camera body 200. If the lens microcomputer 110 determines that a focus reset command has been received, it executes the process of step S304, and if it determines that a focus reset command has not been received, it repeats the process of this step.

[0053] In step S304, the lens microcomputer 110 causes the whole focus control unit 106 to perform a reset process for the whole focus driving unit 102.

[0054] In step S305, the lens microcomputer 110 determines whether or not the reset process of the whole focus driving unit 102 is completed. If the lens microcomputer 110 determines that the reset process of the whole focus driving unit 102 is completed, it executes the process of step S301, and if it determines that the reset process of the whole focus driving unit 102 is not completed, it repeats the process of this step.

[0055] In step S306, the lens microcomputer 110 determines whether or not an abnormal state of the drive mechanism including the right eye focus drive unit 103 has been detected. If the lens microcomputer 110 determines that an abnormal state of the drive mechanism including the right eye focus drive unit 103 has been detected, it executes the process of step S307, and if it determines that an abnormal state of the drive mechanism including the right eye focus drive unit 103 has not been detected, it executes the process of step S301. Monitor.

[0056] In step S307, the lens microcomputer 110 sets a right eye focus abnormality detection flag. In the full focus mode, even if an abnormal state of the drive mechanism including the right eye focus drive unit 103 is detected, the lens microcomputer 110 does not perform the return process of the right eye focus drive unit 103. The return process is performed when the mode transitions to the left-right difference focus adjustment mode.

[0057] The left-right difference focus adjustment mode is a mode in which the focus deviation between the left and right optical systems is adjusted by driving the right eye focus drive unit 103 in response to the operation of the operation ring 111. As with the full focus mode, if an abnormal state is detected, a recovery operation must be performed, but priority is given to correctly operating the focus adjustment function, and if an abnormal state of the drive mechanism including the full focus drive unit 102 is detected, a forced transition to the full focus mode is made. In addition, if a focus reset command is received from the camera body 200 in the left-right difference focus adjustment mode, the mode may be forced to transition to the full focus mode.

[0058] FIG. 8 is a flowchart showing a process for recovering from an abnormal state in the left-right focus deviation adjustment mode.

[0059] In step S401, the lens microcomputer 110 determines whether or not an abnormal state of the drive mechanism including the whole focus drive unit 102 has been detected. If the lens microcomputer 110 determines that an abnormal state of the drive mechanism including the whole focus drive unit 102 has been detected, it executes the process of step S402, and if it determines that an abnormal state of the drive mechanism including the whole focus drive unit 102 has not been detected, it executes the process of step S404.

[0060] In step S402, the lens microcomputer 110 determines whether the right eye focus driving unit 103 is stopped. If the lens microcomputer 110 determines that the right eye focus driving unit 103 is stopped, it executes the process of step S403, and if it determines that the right eye focus driving unit 103 is not stopped, it repeats the process of this step.

[0061] In step S403, the lens microcomputer 110 sets the mode to the full focus mode. When the full focus mode is set, a recovery process from an abnormal state of the drive mechanism including the full focus drive unit 102 is performed according to the flow of FIG.

[0062] In step S404, the lens microcomputer 110 determines whether the right eye focus abnormality detection flag is set. If the lens microcomputer 110 determines that the right eye focus abnormality detection flag is set, it executes the process of step S405, and if it determines that the right eye focus abnormality detection flag is not set, it executes the process of step S407.

[0063] In step S405 , the lens microcomputer 110 causes the right eye focus control unit 108 to perform a reset process for the right eye focus driving unit 103 .

[0064] In step S406, the lens microcomputer 110 determines whether or not the reset process of the right eye focus driving unit 103 is completed. If the lens microcomputer 110 determines that the reset process of the right eye focus driving unit 103 is completed, it executes the process of step S407, and if it determines that the reset process of the right eye focus driving unit 103 is not completed, it repeats the process of this step.

[0065] In step S407, the lens microcomputer 110 determines whether or not an abnormal state of the drive mechanism including the right eye focus drive unit 103 has been detected. If the lens microcomputer 110 determines that an abnormal state of the drive mechanism including the right eye focus drive unit 103 has been detected, it executes the process of step S408, and if it determines that an abnormal state of the drive mechanism including the right eye focus drive unit 103 has not been detected, it executes the process of step S401.

[0066] In step S408, the lens microcomputer 110 sets a right eye focus abnormality detection flag.

[0067] As described above, according to the configuration of this embodiment, by appropriately switching between a mode in which the left and right optical systems are adjusted simultaneously and a mode in which the left and right optical systems are adjusted relatively to each other, it is possible to prevent a situation in which proper shooting is not possible contrary to the user's intentions. EXAMPLES

[0068] 9 is a configuration diagram of a camera system according to the present embodiment. In this embodiment, only configurations different from those in the first embodiment will be described, and a description of common configurations will be omitted.

[0069] In this embodiment, actuators are provided independently for the left and right optical systems. The interchangeable lens 100 includes a left eye focus control unit 113, a left eye focus drive actuator 114, and a left eye focus drive unit 115, instead of the total focus control unit 106, the total focus drive actuator 105, and the total focus drive unit 102. In this case, in the total focus mode, it is necessary to drive the left and right actuators simultaneously, and the drive amount and speed are controlled completely synchronously for the left and right. That is, in this embodiment, the drive units are composed of a right eye focus drive unit 103 and a left eye focus drive unit 104. In this embodiment, the lens microcomputer 110 drives the right eye focus drive unit 103 and the left eye focus drive unit 104 in the total focus mode, and drives the right eye focus drive unit 103 in the left-right difference focus adjustment mode.

[0070] The above configuration can realize a function equivalent to the focus adjustment shown in the first embodiment. In the first embodiment, it is possible to realize the focus adjustment function of the left and right optical systems without executing a reset process for determining the coordinate of the right eye focus driving unit 103. On the other hand, in this embodiment, it is necessary to determine the coordinate positions of both the right eye focus driving unit 103 and the left eye focus driving unit 115 in order to control the left and right synchronously.

[0071] Basically, the configuration of this embodiment can provide the same functions by switching the modes as described in embodiment 1. However, there are differences in the method of detecting and restoring abnormalities in the focus drive unit, which will be described below.

[0072] 10 is a flow chart showing a process for recovering from an abnormal state of the drive mechanism including the focus drive unit. The same process is performed in the whole focus mode and the left / right focus difference adjustment mode.

[0073] In step S501, the lens microcomputer 110 determines whether or not it has detected an abnormal state of the drive mechanism including the right eye focus drive unit 103 or the left eye focus drive unit 115. If the lens microcomputer 110 determines that it has detected an abnormal state of the drive mechanism including the right eye focus drive unit 103 or the left eye focus drive unit 115, it executes the process of step S502, and if it determines that it has not detected an abnormal state, it repeats the process of this step.

[0074] In step S502, the lens microcomputer 110 notifies the camera body 200 of an abnormal state.

[0075] In step S503, the lens microcomputer 110 determines whether or not a focus reset command has been received from the camera body 200. If the lens microcomputer 110 determines that a focus reset command has been received, it executes the process of step S504, and if it determines that a focus reset command has not been received, it repeats the process of this step.

[0076] In step S504, the lens microcomputer 110 causes the focus control unit corresponding to the drive mechanism including the focus drive unit in which the abnormal state has been detected to perform a reset process for the focus drive unit. For example, if it is determined that both drive mechanisms are in an abnormal state, the reset process for both focus drive units is performed.

[0077] In step S505, the lens microcomputer 110 determines whether the reset process of the focus driving unit is completed. If the lens microcomputer 110 determines that the reset process of the focus driving unit is completed, it executes the process of step S501, and if it determines that the reset process of the focus driving unit is not completed, it repeats the process of this step.

[0078] As described above, even if the driving units for driving the left and right optical systems are provided independently, it is possible to prevent a situation in which proper shooting is not possible contrary to the user's intentions by appropriately switching modes.

[0079] The disclosure of this embodiment includes the following configuration. (Configuration 1) An accessory device that can be attached to an imaging device and can be switched between a first mode and a second mode, A first optical system; A second optical system arranged in parallel with the first optical system; a drive unit that moves at least one of the first optical system and the second optical system; an accessory device characterized by having a control means that drives the drive unit so that the first optical system and the second optical system move simultaneously in the first mode, and drives the drive unit so that one of the first optical system and the second optical system moves in the second mode. (Configuration 2) the driving unit includes a first driving unit configured to simultaneously drive the first optical system and the second optical system, and a second driving unit configured to drive one of the first optical system and the second optical system, 2. The accessory device according to claim 1, wherein the control means drives the first drive unit in the first mode and drives the second drive unit in the second mode. (Configuration 3) the driving unit includes a first driving unit that drives the first optical system and a second driving unit that drives the second optical system, The accessory device described in configuration 1, characterized in that the control means drives the first drive unit and the second drive unit in the first mode, and drives one of the first drive unit and the second drive unit in the second mode. (Configuration 4) 4. The accessory device according to any one of configurations 1 to 3, wherein the control means sets a mode of the accessory device. (Configuration 5) An operation unit that accepts the setting of the mode is further provided, 5. The accessory device according to configuration 4, wherein the control means sets the mode in accordance with the mode setting received by the operation unit. (Configuration 6) 6. The accessory device according to configuration 4 or 5, wherein the control means acquires information regarding the setting of the mode from the imaging device, and sets the mode in accordance with the information. (Configuration 7) 7. The accessory device according to any one of configurations 4 to 6, wherein the control means sets the mode to the first mode when the accessory device is started up. (Configuration 8) 8. The accessory device according to any one of configurations 4 to 7, wherein the control means sets the mode in a state where the drive unit is stopped. (Configuration 9) The drive unit includes a plurality of drive units, The accessory device according to any one of configurations 4 to 8, wherein the control means sets the mode when a reset process for a driving unit that can be driven in the currently set mode among the plurality of driving units is completed. (Configuration 10) The drive unit includes a plurality of drive units, The accessory device described in any one of configurations 4 to 9, characterized in that when the control means receives a reset processing command from the imaging device in the second mode for a driving unit among the plurality of driving units that can be driven in the first mode, the control means sets the mode to the first mode. (Configuration 11) The device further includes an operating member that is operated by a user, 11. The accessory device according to any one of configurations 1 to 10, wherein the control means drives the drive unit in response to an operation on the operating member in the first mode and the second mode. (Configuration 12) The drive unit includes a plurality of drive units, The accessory device described in any one of configurations 1 to 11, characterized in that when the control means detects an abnormality in a drive unit that can be driven in a currently set mode among the plurality of drive units, it performs processing to recover from the abnormality. (Configuration 13) The drive unit includes a plurality of drive units, The accessory device described in any one of configurations 1 to 12, characterized in that when the control means detects an abnormality in a drive unit other than a drive unit that can be operated in the currently set mode among the plurality of drive units, the control means does not perform processing to recover from the abnormality in the drive unit in which the abnormality has been detected. (Configuration 14) The accessory device described in configuration 13, characterized in that when the currently set mode transitions to a mode in which the drive unit in which the abnormality was detected can be driven, the control means performs processing to restore the abnormality in the drive unit in which the abnormality was detected.

[0080] 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]

[0081] 100 Interchangeable lenses (accessory devices) 102 Overall focus drive unit (drive mechanism) 103 Right eye focus drive unit (drive unit) 110 Lens microcomputer (control means) 115 Left eye focus drive unit (drive unit) 200 Camera body (imaging device)

Claims

1. An accessory device that can be attached to an imaging device and can be switched between a first mode and a second mode, A first optical system; A second optical system arranged in parallel with the first optical system; a drive unit that moves at least one of the first optical system and the second optical system; an accessory device characterized by having a control means for driving the drive unit so that the first optical system and the second optical system move simultaneously in the first mode, and for driving the drive unit so that one of the first optical system and the second optical system moves in the second mode.

2. the driving unit includes a first driving unit configured to simultaneously drive the first optical system and the second optical system, and a second driving unit configured to drive one of the first optical system and the second optical system, 2. The accessory device according to claim 1, wherein the control means drives the first drive unit in the first mode and drives the second drive unit in the second mode.

3. the driving unit includes a first driving unit that drives the first optical system and a second driving unit that drives the second optical system, The accessory device according to claim 1, wherein the control means drives the first drive unit and the second drive unit in the first mode, and drives one of the first drive unit and the second drive unit in the second mode.

4. 4. The accessory device according to claim 1, wherein the control means sets a mode of the accessory device.

5. An operation unit that accepts the setting of the mode is further provided, 5. The accessory device according to claim 4, wherein the control means sets the mode in accordance with a setting of the mode accepted by the operation unit.

6. 5. The accessory device according to claim 4, wherein the control means acquires information regarding the setting of the mode from the imaging device, and sets the mode in accordance with the information.

7. 5. The accessory device according to claim 4, wherein the control means sets the mode to the first mode when the accessory device is started up.

8. 5. The accessory device according to claim 4, wherein the control means sets the mode in a state where the driving unit is stopped.

9. The drive unit includes a plurality of drive units, 5. The accessory device according to claim 4, wherein the control means sets the mode when a reset process has been completed for a driving unit that can be driven in the currently set mode among the plurality of driving units.

10. The drive unit includes a plurality of drive units, The accessory device according to claim 4, characterized in that the control means sets the mode to the first mode when, in the second mode, it receives a reset processing command from the imaging device for a drive unit among the plurality of drive units that can be driven in the first mode.

11. The device further includes an operating member that is operated by a user, 4. The accessory device according to claim 1, wherein the control means drives the drive unit in response to an operation on the operating member in the first mode and the second mode.

12. The drive unit includes a plurality of drive units, The accessory device according to any one of claims 1 to 3, characterized in that when the control means detects an abnormality in one of the plurality of drive units that can be driven in the currently set mode, the control means performs processing to recover from the abnormality.

13. The drive unit includes a plurality of drive units, The accessory device described in any one of claims 1 to 3, characterized in that when the control means detects an abnormality in a drive unit other than a drive unit that can be operated in the currently set mode among the plurality of drive units, the control means does not perform processing to recover from the abnormality in the drive unit in which the abnormality was detected.

14. The accessory device according to claim 13, characterized in that the control means performs processing to recover from the abnormality in the drive unit in which the abnormality was detected when the currently set mode transitions to a mode in which the drive unit in which the abnormality was detected can be driven.

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