Optical device

Abstract

To provide an optical device capable of improving operability.SOLUTION: The optical device is attachable to and detachable from the imaging device, and includes a drive instruction unit that instructs driving of a drive unit that operates an optical element, a first connection unit that connects to the imaging device, a second connection unit that connects to an external device different from the imaging device, and a selection unit that selects at least one of the imaging device and the external device as a supply source of power for operating the drive instruction unit according to presence or absence of power supply to a first power reception path via the first connection unit and a second power reception path via the second connection unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an optical device that is detachable from an imaging device. [Background technology]

[0002] Conventionally, an optical device has been proposed that is detachable from an imaging device and can be connected to external devices other than the imaging device, and can obtain driving power for a driving means not only from the imaging device but also from the external device (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-54774 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the optical device of Patent Document 1 requires a permission command from the imaging device when switching the source of the driving power supply for the driving means, which results in poor operability.

[0005] An object of the present invention is to provide an optical device that can improve operability. [Means for solving the problem]

[0006] An optical device according to one aspect of the present invention is an optical device that is detachable from an imaging device, and is characterized by having a drive instruction unit that instructs the driving of a drive unit that operates an optical element, a first connection unit for connecting to the imaging device, a second connection unit for connecting to an external device different from the imaging device, and a selection unit that selects at least one of the imaging device and the external device as a source of power for operating the drive instruction unit, depending on whether or not power is supplied to a first power receiving path via the first connection unit and a second power receiving path via the second connection unit. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide an optical device that can improve operability. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram showing a configuration of an interchangeable lens according to a first embodiment. [Figure 2] FIG. 2 is a block diagram showing the configuration of an interchangeable lens connected to the camera of the first embodiment. [Figure 3] FIG. 2 is a block diagram showing the configuration of an interchangeable lens connected to an external device according to the first embodiment. [Figure 4] 1 is a block diagram showing the configuration of an interchangeable lens connected to a camera and an external device according to a first embodiment. [Figure 5] 10 is a flowchart showing a driving power supply source switching process according to the first embodiment. [Figure 6] 10 is a flowchart showing a driving power supply source switching process according to the second embodiment. [Figure 7] 10 is a flowchart showing a removal sequence according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, 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 designate the same components, and redundant explanations will be omitted.

[0010] In each embodiment, an example in which the present invention is applied to an interchangeable lens (lens device) that can be attached to and detached from an imaging device will be described, but the present invention is not limited to this. The present invention can also be applied to accessories such as extenders and adapters. [Example]

[0011] FIG. 1 is a block diagram showing the configuration of an interchangeable lens 100. The interchangeable lens 100 has an interchangeable lens substrate 101, an aperture actuator (aperture ACT) 102, an anti-vibration actuator (anti-vibration ACT) 103, and a focus actuator (focus ACT) 104. The aperture ACT 102, anti-vibration ACT 103, and focus ACT are driving units that operate optical elements. The interchangeable lens substrate 101 also has an interchangeable lens CPU (control unit) 105 and ACT driving means (drive instruction unit) 106. The interchangeable lens CPU 105 has a lens communication unit 107, a control switching unit 108, a control unit 109, a lens communication switching unit 110, a power reception determination unit (determination unit) 111, and a power reception path selection unit (selection unit) 112. The interchangeable lens 100 also has a variable aperture 113, an anti-vibration lens 114, and a focus lens 115 as optical elements.

[0012] The control means 109 controls the ACT drive means 106. The ACT drive means 106 operates the variable diaphragm 113 by issuing an instruction to the diaphragm ACT 102, the vibration-proof lens 114 by issuing an instruction to the vibration-proof ACT 103, and the focus lens 115 by issuing an instruction to the focus ACT 104. The variable diaphragm 113 can change the size of the diaphragm opening to adjust the amount of light passing through the imaging optical system. The vibration-proof lens 114 can reduce vibrations in the imaging optical system due to camera shake or the like. The focus lens 115 can change the focus position of the imaging optical system.

[0013] The interchangeable lens 100 also has a lens mount (first connection part) 116 that can be connected to a camera (imaging device) or accessory having a compatible mount, and an external mount (second connection part) 120 that can be connected to an external device having a compatible mount. The lens mount 116 has a lens communication terminal 117, a lens logic system power supply terminal 118, and a lens power system power supply terminal 119. The external mount 120 has an external communication terminal 121 and an external power supply terminal 122.

[0014] The interchangeable lens 100 also has a lens communication switch SW123, a lens power system power supply switch SW124, and an external power supply switch SW125.

[0015] The interchangeable lens CPU 105 operates by receiving power supplied via a lens logic system power supply terminal 118 and an external power supply terminal 122. The lens communication means 107 communicates with a connected camera or accessory via a lens communication terminal 117, and with a connected external device via an external communication terminal 121.

[0016] The ACT driving means 106 is supplied with power via a lens power system power terminal 119 and an external power terminal 122, and drives the various ACTs. In this embodiment, the ACT driving means 106 drives the aperture ACT 102, the vibration isolation ACT 103, and the focus ACT 104. By receiving power from an external device, the ACT driving means 106 can drive the various ACTs when the interchangeable lens 100 is standalone. Furthermore, when the interchangeable lens 100 is attached to a camera, available power increases, allowing the ACT driving means 106 to drive the various ACTs without any restrictions.

[0017] The control switching means 108 switches the control method of the control means 109. For example, it changes the maximum drive speed of the focus ACT 104. In this case, the maximum power consumption of the focus ACT 104 also changes.

[0018] The lens communication switching means 110 controls the lens communication switching SW 123 to switch the connection between the lens communication terminal 117 and the lens communication means 107 .

[0019] The power reception determination means 111 determines whether or not power is being received by the lens logic system power supply terminal 118 and the external power supply terminal 122. Specifically, the power reception determination means 111 determines whether or not power is being supplied to a power receiving path (first power receiving path) from the lens logic system power supply terminal 118 to the interchangeable lens CPU 105, and a power receiving path (second power receiving path) from the external power supply terminal 122 to the ACT drive means 106.

[0020] The power receiving path selection means 112 selects at least one of the camera and the external device as a supplier of drive power (power for operating the ACT drive means 106) for the ACT drive means 106, depending on the determination result of the power receiving determination means 111. Specifically, the power receiving path selection means 112 controls the lens power system power supply switching SW 124 to switch the connection between the lens power system power supply terminal 119 and the ACT drive means 106. The power receiving path selection means 112 also controls the external power supply switching SW 125 to switch the connection between the external power supply terminal 122 and the ACT drive means 106.

[0021] 2 is a block diagram showing the configuration of the interchangeable lens 100 connected (attached) to the camera 200. The camera 200 has a camera board 201 and a camera power supply 202. The camera board 201 has a camera CPU 203 and camera power supply means 204. The camera CPU 203 has camera communication means 205.

[0022] The camera 200 also has a camera mount 206 that can be connected to an interchangeable lens 100 that has a compatible mount. The camera mount 206 has a camera communication terminal 207, a camera logic system power supply terminal 208, and a camera power system power supply terminal 209. When the lens mount 116 and the camera mount 206 are attached, the lens communication terminal 117 and the camera communication terminal 207 are connected. The lens logic system power supply terminal 118 and the camera logic system power supply terminal 208 are also connected, and the lens power system power supply terminal 119 and the camera power system power supply terminal 209 are also connected. The interchangeable lens 100 communicates with the camera 200 via these terminals, and is supplied with power from the camera 200.

[0023] 3 is a block diagram showing the configuration of the interchangeable lens 100 connected to an external device 300. The external device 300 has an external device board 301 and an external device power supply 302. The external device board 301 has an external device CPU 303 and external device power supply means 304. The external device CPU 303 has external device communication means 305.

[0024] Furthermore, the external device 300 has an external device mount 306 that can be connected to an interchangeable lens 100 having a compatible mount. The external device mount 306 has an external device communication terminal 307 and an external device power supply terminal 308. When the external mount 120 and the external device mount 306 are attached, the external communication terminal 121 is connected to the external device communication terminal 307, and the external power supply terminal 122 is connected to the external device power supply terminal 308. The interchangeable lens 100 communicates with the external device 300 and is supplied with power from the external device 300 via these terminals.

[0025] 4 is a block diagram showing the configuration of the interchangeable lens 100 connected to the camera 200 and the external device 300. When the interchangeable lens 100 is connected to at least one of the camera 200 and the external device 300, the interchangeable lens CPU 105 is supplied with power and can be started up.

[0026] The driving power supply source switching process of this embodiment will be described below with reference to Fig. 5. Fig. 5 is a flowchart showing the driving power supply source switching process of this embodiment. This flow starts after the interchangeable lens CPU 105 is started.

[0027] In step S101, the power reception determination means 111 determines whether or not power is being received at the lens logic system power supply terminal 118 based on the voltage level of the lens logic system power supply terminal 118. If the power reception determination means 111 determines that power is being received at the lens logic system power supply terminal 118, it executes the process of step S102, and if it determines that power is not being received, it executes the process of step S103.

[0028] In step S102, the lens communication switching means 110 turns on the lens communication switch SW 123 so as to connect the lens communication means 107 and the lens communication terminal 117. As a result, the lens communication means 107 and the camera communication means 205 are connected via the lens communication terminal 117.

[0029] In step S103, the lens communication switching means 110 turns off the lens communication switch SW 123 so that the lens communication means 107 is not connected to the lens communication terminal 117. As a result, the lens communication terminal 117 has no connection destination and is in an open state.

[0030] In step S104, the power reception determination means 111 determines whether or not power is being received at the external power supply terminal 122 based on the voltage level of the external power supply terminal 122. If the power reception determination means 111 determines that power is being received at the external power supply terminal 122, it executes the process of step S105, and if it determines that power is not being received, it executes the process of step S106.

[0031] In step S105, the power receiving path selection means 112 turns off the lens power system power supply switch 124 so that the lens power system power supply terminal 119 and the ACT driving means 106 are not connected. The power receiving path selection means 112 also turns on the external power supply switch 125 so that the external power supply terminal 122 and the ACT driving means 106 are connected. In other words, the power receiving path selection means 112 selects the external device 300 as the supply source of drive power for the ACT driving means 106. As a result, the ACT driving means 106 and the external device power supply means 304 are connected via the external power supply terminal 122.

[0032] In step S106, the power receiving path selection means 112 turns on the lens power system power switch SW124 so that the lens power system power terminal 119 and the ACT driving means 106 are connected. The power receiving path selection means 112 also turns off the external power switch SW125 so that the external power terminal 122 and the ACT driving means 106 are not connected. In other words, the power receiving path selection means 112 selects the camera 200 as the supply source of drive power for the ACT driving means 106. As a result, the ACT driving means 106 and the camera power supply means 204 are connected via the lens power system power terminal 119.

[0033] According to the flow of Fig. 5, in a configuration in which only the camera 200 is connected to the interchangeable lens 100 of Fig. 2, the lens communication switch SW 123 is ON, the lens power system power switch SW 124 is ON, and the external power switch SW 125 is OFF. When no external device 300 is connected to the interchangeable lens 100, the external power terminal 122 is exposed. In this embodiment, by turning off the external power switch SW 125, it is possible to prevent unnecessary voltage from being output from the external power terminal 122. In this configuration, the interchangeable lens 100 can be used normally, like a typical camera system.

[0034] 3 in which only the external device 300 is connected, the lens communication switch SW 123 is OFF, the lens power system power switch SW 124 is OFF, and the external power switch SW 125 is ON. When the camera 200 is not connected to the interchangeable lens 100, the lens communication terminal 117 and the lens power system power terminal 119 are exposed. In this embodiment, by turning off the lens communication switch SW 123 and the lens power system power switch SW 124, it is possible to prevent unnecessary voltage from being output from the lens communication terminal 117 and the lens power system power terminal 119. In this configuration, the interchangeable lens 100 can drive various ACTs even without the camera 200 attached, and can be used in a variety of fields, such as medical and industrial applications.

[0035] 4, the lens communication switch SW123 is ON, the lens power system power switch SW124 is OFF, and the external power switch SW125 is ON. Only the external device power supply means 304 is connected to the ACT drive means 106, and the camera power supply means 204 is not connected. Therefore, the ACT drive means 106 is driven without using the camera power supply 202. In this configuration, the interchangeable lens 100 can be used normally, like a typical camera system, while conserving the camera power supply 202.

[0036] As described above, according to the configuration of this embodiment, it is possible to switch the drive power supply source appropriately depending on the connection configuration in any of the configurations shown in Figures 2 to 4. This makes it possible to improve operability. [Example]

[0037] In this embodiment, a description will be given of a drive power supply source switching process that is different from that in embodiment 1. In this embodiment, only the configuration that is different from embodiment 1 will be described, and a description of the same configuration will be omitted.

[0038] 6 is a flowchart showing the driving power supply source switching process of this embodiment. This flow starts after the interchangeable lens CPU 105 is started.

[0039] In step S201, the power reception determination means 111 determines whether or not power is being received at the lens logic system power supply terminal 118 based on the voltage level of the lens logic system power supply terminal 118. If the power reception determination means 111 determines that power is being received at the lens logic system power supply terminal 118, it executes the process of step S202, and if it determines that power is not being received, it executes the process of step S204.

[0040] In step S202, the lens communication switching means 110 turns on the lens communication switch SW 123 so as to connect the lens communication means 107 and the lens communication terminal 117. As a result, the lens communication means 107 and the camera communication means 205 are connected via the lens communication terminal 117.

[0041] In step S203, the lens communication unit 107 receives from the camera 200 the amount of camera power that the camera power supply unit 204 can supply.

[0042] In step S204, the lens communication switching means 110 turns off the lens communication switch SW 123 so that the lens communication means 107 is not connected to the lens communication terminal 117. As a result, the lens communication terminal 117 has no connection destination and is in an open state.

[0043] In step S205, the lens communication unit 107 receives from the external device 300 the amount of power that the external device power supply unit 304 can supply to the external device.

[0044] In step S206, the power receiving determination means 111 determines whether or not power is being received at the external power supply terminal 122 based on the voltage level of the external power supply terminal 122. If the power receiving determination means 111 determines that power is being received at the external power supply terminal 122, it executes the process of step S207, and if it determines that power is not being received, it executes the process of step S208.

[0045] In step S207, the lens communication unit 107 receives from the external device 300 the amount of power that the external device power supply unit 304 can supply to the external device.

[0046] In step S208, the interchangeable lens CPU 105 determines whether the amount of available camera power supply is greater than the maximum lens ACT drive power consumed by the ACT drive means 106. If the interchangeable lens CPU 105 determines that the amount of available camera power supply is greater than the maximum lens ACT drive power, it executes the process of step S217, and if it determines that this is not the case, it executes the process of step S209.

[0047] In step S209, the control switching means 108 switches the control method of the control means 109 so that the lens ACT drive maximum power consumed by the ACT drive means 106 is reduced.

[0048] In step S210, the interchangeable lens CPU 105 determines whether the amount of power that can be supplied to the external device is greater than the maximum lens ACT drive power consumed by the ACT drive means 106. If the interchangeable lens CPU 105 determines that the amount of power that can be supplied to the external device is greater than the maximum lens ACT drive power, it executes the process of step S215, and if it determines that this is not the case, it executes the process of step S211.

[0049] In step S211, the control switching means 108 switches the control method of the control means 109 so that the lens ACT drive maximum power consumed by the ACT drive means 106 is reduced.

[0050] In step S212, the interchangeable lens CPU 105 determines whether the amount of power that can be supplied to the external device is greater than the maximum lens ACT drive power consumed by the ACT drive means 106. If the interchangeable lens CPU 105 determines that the amount of power that can be supplied to the external device is greater than the maximum lens ACT drive power, it executes the process of step S215, and if it determines that this is not the case, it executes the process of step S213.

[0051] In step S213, the interchangeable lens CPU 105 determines whether the sum of the allowable camera power amount and the external device power supply amount is greater than the lens ACT drive maximum power consumed by the ACT drive means 106. If the interchangeable lens CPU 105 determines that the sum is greater than the lens ACT drive maximum power, it executes the process of step S216, and if it determines that this is not the case, it executes the process of step S214.

[0052] In step S214, the control switching means 108 switches the control method of the control means 109 so that the lens ACT drive maximum power consumed by the ACT drive means 106 is reduced.

[0053] In step S215, the power receiving path selection means 112 turns OFF the lens power system power supply switch 124 so that the lens power system power supply terminal 119 is not connected to the ACT driving means 106. The power receiving path selection means 112 also turns ON the external power supply switch 125 so that the external power supply terminal 122 is connected to the ACT driving means 106. In other words, the power receiving path selection means 112 selects the external device 300 as the supply source of drive power for the ACT driving means 106. As a result, the ACT driving means 106 and the external device power supply means 304 are connected via the external power supply terminal 122.

[0054] In step S216, the power receiving path selection means 112 turns on the lens power system power switch SW 124 so that the lens power system power terminal 119 and the ACT driving means 106 are connected. The power receiving path selection means 112 also turns on the external power switch SW 125 so that the external power terminal 122 and the ACT driving means 106 are connected. In other words, the power receiving path selection means 112 selects the camera 200 and the external device 300 as the supply sources of drive power for the ACT driving means 106. As a result, the ACT driving means 106 is connected to the camera power supply means 204 and the external device power supply means 304 via the lens power system power terminal 119 and the external power terminal 122.

[0055] In step S217, the power receiving path selection means 112 turns on the lens power system power switch SW 124 so that the lens power system power terminal 119 and the ACT driving means 106 are connected. The power receiving path selection means 112 also turns off the external power switch SW 125 so that the external power terminal 122 and the ACT driving means 106 are not connected. In other words, the power receiving path selection means 112 selects the camera 200 as the supply source of drive power for the ACT driving means 106. As a result, the ACT driving means 106 and the camera power supply means 204 are connected via the lens power system power terminal 119.

[0056] In step S218, the interchangeable lens CPU 105 performs a removal sequence.

[0057] 7, in a configuration in which only the camera 200 is connected to the interchangeable lens 100 of FIG. 2, the lens communication switch SW 123 is ON, the lens power system power switch SW 124 is ON, and the external power switch SW 125 is OFF. Also, if the maximum lens ACT drive power consumed by the ACT drive means 106 is greater than the amount of power that can be supplied to the camera by the camera power supply means 204, the control method of the control means 109 is switched. With this configuration, in addition to the same effects as in the first embodiment, power management that does not exceed the supply power becomes possible.

[0058] 3, in which only the external device 300 is connected, the lens communication switch SW123 is OFF, the lens power system power switch SW124 is OFF, and the external power switch SW125 is ON. If the maximum lens ACT drive power consumed by the ACT drive means 106 is greater than the amount of power that the external device power supply means 304 can supply to the external device, the control method of the control means 109 is switched. With this configuration, in addition to the same effects as in the first embodiment, power management that does not exceed the supply power becomes possible.

[0059] 4, the lens communication switch SW 123 is turned ON. The lens power system power switch SW 124 and the external power switch SW 125 are switched appropriately depending on the amount of power that can be supplied by the camera power supply means 204 and the external device power supply means 304.

[0060] For example, if the amount of power that the external device power supply means 304 can supply to an external device is greater than the maximum lens ACT drive power consumed by the ACT drive means 106, the lens power system power switch SW 124 is turned OFF and the external power switch SW 125 is turned ON. As a result, only the external device power supply means 304 is connected to the ACT drive means 106, and the camera power supply means 204 is not connected. Therefore, the ACT drive means 106 operates without receiving power from the camera power supply 202. With this configuration, the interchangeable lens 100 can be used normally, like a typical camera system, while conserving the camera power supply 202.

[0061] Furthermore, when the external device power supply capacity of the external device power supply unit 304 is equal to or less than the maximum lens ACT drive power consumed by the ACT drive unit 106, the lens power system power switch 124 is ON and the external power switch 125 is ON. As a result, the ACT drive unit 106 is connected to the camera power supply unit 204 and the external device power supply unit 304 and is driven by power supplied from both the camera power supply 202 and the external device power supply 302. With this configuration, the interchangeable lens 100 can be used normally, like a typical camera system. Furthermore, since the power available to the ACT drive unit 106 is increased, various ACTs can be driven without restrictions (without control to reduce power consumption). For example, even if the camera power supply capacity is less than the maximum lens ACT drive power, as long as the external device power supply capacity is sufficient, there is no need to slow down the drive speed of the aperture ACT 102 or the focus ACT 104 or reduce the vibration isolation performance of the vibration isolation ACT 103.

[0062] In this embodiment, the lens power system power switch SW 124 and the external power switch SW 125 are switched depending on the available power supply amounts of the camera power supply unit 204 and the external device power supply unit 304, but the present invention is not limited to this. For example, assume that the interchangeable lens 100 is configured to be settable between a power-saving drive mode (first mode) and a high-power drive mode (second mode) that uses more power than the power-saving mode. In this case, when the power-saving drive mode is set, the lens power system power switch SW 124 can be turned OFF and the external power switch SW 125 can be turned ON. Furthermore, when the high-power drive mode is set, the lens power system power switch SW 124 can be turned ON and the external power switch SW 125 can be turned ON.

[0063] 4, the external device 300 is selected as the source of power to drive the ACT drive unit 106, but the present invention is not limited to this. For example, if the available power supply to the external device is less than a threshold value or is less than the available power supply to the camera, the camera 200 may be selected as the source of power to drive the ACT drive unit 106.

[0064] Fig. 7 is a flowchart of the removal sequence in step S219 in Fig. 6. This flow starts when the lens communication switch SW 123, the lens power system power supply switch SW 124, and the external power supply switch SW 125 are turned on.

[0065] In S301, the power reception determination means 111 determines whether there has been a change from a state in which power is received to a state in which it is not received at the lens logic system power supply terminal 118 or the external power supply terminal 122. If the power reception determination means 111 determines that there has been a change from a state in which power is received to a state in which it is not received at the lens logic system power supply terminal 118 or the external power supply terminal 122, it executes the processing of step S302, and if it determines that there has not been a change, it executes the processing of this step again.

[0066] In step S302, the power receiving path selection means 112 turns off the lens power system power switch SW 124 and the external power switch SW 125 so that the ACT driving means 106 is not connected to the lens power system power terminal 119 and the external power terminal 122.

[0067] 4, when the camera 200 and the external device 300 are attached to the interchangeable lens 100 and the ACT driving means 106 is consuming power from both, if the external device 300 is detached, there is a possibility that the amount of power consumed will exceed the amount of power that can be supplied from the camera power supply means 204. Also, if the camera 200 is detached, there is a possibility that the amount of power consumed will exceed the amount of power that can be supplied from the external device power supply means 304. Therefore, in this embodiment, when one of the camera 200 and the external device 300 is detached, the ACT driving means 106 cuts off the connection with the other, preventing it from consuming power from the other power supply means.

[0068] As described above, according to the configuration of this embodiment, it is possible to switch the drive power supply source appropriately depending on the connection configuration in any of the configurations shown in Figures 2 to 4. This makes it possible to improve operability.

[0069] In each embodiment, the lens communication switch SW 123 is used to switch the connection between the lens communication unit 107 and the lens communication terminal 117, but the present invention is not limited to this. The communication line of the lens communication unit 107 may be set to high impedance.

[0070] The disclosure of this embodiment includes the following configuration. (Configuration 1) An optical device that is detachable from an imaging device, a drive instruction unit that instructs the drive unit that operates the optical element to drive the optical element; a first connection portion for connecting to the imaging device; a second connection portion for connecting to an external device different from the imaging device; a selection unit that selects at least one of the imaging device and the external device as a power source for operating the drive instruction unit, depending on whether or not power is supplied to a first power receiving path via the first connection unit and a second power receiving path via the second connection unit. (Configuration 2) a determination unit that determines whether or not power is being supplied to the first power receiving path and the second power receiving path, The interchangeable lens according to configuration 1, wherein the selection section selects at least one of the image pickup device and the external device based on the determination result of the determination section. (Configuration 3) 3. The interchangeable lens according to configuration 1 or 2, wherein the selection unit selects the external device when power is supplied to the first power receiving path and the second power receiving path. (Configuration 4) the interchangeable lens is settable between a first mode and a second mode that uses more power than the first mode, The interchangeable lens described in configuration 3, wherein the selection unit selects only the external device when power is supplied to the first power receiving path and the second power receiving path and the interchangeable lens is set to the first mode. (Configuration 5) The interchangeable lens according to configuration 3 or 4, wherein the selection unit selects only the external device when power is supplied to the first power receiving path and the second power receiving path and the amount of power supplied to the second power receiving path is greater than the maximum power of the drive instruction unit. (Configuration 6) the interchangeable lens is settable between a first mode and a second mode that uses more power than the first mode, The interchangeable lens described in any one of configurations 3 to 5, wherein the selection unit selects the imaging device and the external device when power is supplied to the first power receiving path and the second power receiving path and the interchangeable lens is set to the second mode. (Configuration 7) The interchangeable lens according to any one of configurations 3 to 6, wherein the selection unit selects the imaging device and the external device when power is supplied to the first power receiving path and the second power receiving path, and when the combined amount of power supplied to the first path and the second power receiving path is greater than the maximum power of the drive unit. (Configuration 8) The interchangeable lens according to any one of configurations 1 to 7, wherein the selection unit does not select the imaging device and the external device if a state occurs in which power is not supplied to at least one of the first power receiving path and the second power receiving path while the selection unit has selected the imaging device and the external device. (Configuration 9) 9. The interchangeable lens according to any one of configurations 1 to 8, wherein when the selection section selects only the external device, the connection with the imaging device is cut off. (Configuration 10) 10. The interchangeable lens according to any one of configurations 1 to 9, wherein when the selection section selects only the external device, the communication line with the imaging device is set to high impedance. (Configuration 11) 11. The interchangeable lens according to any one of configurations 1 to 10, wherein when the selection section selects only the image pickup device, the connection with the external device is cut off. (Configuration 12) 12. The interchangeable lens according to any one of configurations 1 to 11, wherein when the selection section selects only the image pickup device, the communication line with the external device is set to high impedance. (Configuration 13) Further, a control unit that controls the selection unit is included. 13. The interchangeable lens according to any one of configurations 1 to 12, wherein the control unit is supplied with power from the imaging device and the external device.

[0071] 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]

[0072] 100 interchangeable lenses 102 Aperture actuator (drive unit) 103 Anti-vibration actuator (drive unit) 104 Focus actuator (drive unit) 106 ACT driving means (driving instruction unit) 112 Power receiving path selection means (selection unit) 113 Variable aperture (optical element) 114 Anti-vibration lens (optical element) 115 Focus lens (optical element) 116 Lens mount (first connection part) 120 External Mount (Second Connection) 200 Camera (imaging device)

Claims

1. An optical device that is detachable from an imaging device, a drive instruction unit that instructs the drive unit that operates the optical element to drive the optical element; a first connection portion for connecting to the imaging device; a second connection portion for connecting to an external device different from the imaging device; a selection unit that selects at least one of the imaging device and the external device as a power source for operating the drive instruction unit, depending on whether or not power is supplied to a first power receiving path via the first connection unit and a second power receiving path via the second connection unit.

2. a determination unit that determines whether or not power is being supplied to the first power receiving path and the second power receiving path, 2. The optical device according to claim 1, wherein the selection section selects at least one of the image capture device and the external device based on the determination result of the determination section.

3. 3. The optical device according to claim 1, wherein the selection unit selects the external device when power is supplied to the first power receiving path and the second power receiving path.

4. the optical device is configurable between a first mode and a second mode that uses more power than the first mode; The optical device according to claim 3, wherein the selection unit selects only the external device when power is supplied to the first power receiving path and the second power receiving path and the optical device is set to the first mode.

5. The optical device according to claim 3, characterized in that the selection unit selects only the external device when power is supplied to the first power receiving path and the second power receiving path and the amount of power supplied to the second power receiving path is greater than the maximum power of the drive instruction unit.

6. the optical device is configurable between a first mode and a second mode that uses more power than the first mode; The optical device according to claim 3, wherein the selection unit selects the imaging device and the external device when power is supplied to the first power receiving path and the second power receiving path and the optical device is set to the second mode.

7. The optical device according to claim 3, characterized in that the selection unit selects the imaging device and the external device when power is supplied to the first power receiving path and the second power receiving path and the combined amount of power supplied to the first power receiving path and the second power receiving path is greater than the maximum power of the drive unit.

8. The optical device according to claim 1 or 2, characterized in that, when the selection unit has selected the imaging device and the external device, if a state occurs in which power is not supplied to at least one of the first power receiving path and the second power receiving path, the selection unit does not select the imaging device and the external device.

9. 3. The optical device according to claim 1, wherein when the selection unit selects only the external device, the optical device disconnects the connection with the imaging device.

10. 3. The optical device according to claim 1, wherein when the selection section selects only the external device, a communication line to the imaging device is set to high impedance.

11. 3. The optical device according to claim 1, wherein when the selection section selects only the image capture device, the optical device disconnects the connection with the external device.

12. 3. The optical device according to claim 1, wherein when the selection section selects only the image pickup device, the communication line to the external device is set to high impedance.

13. Further, a control unit that controls the selection unit is included.

3. The optical device according to claim 1, wherein the control unit receives power from the imaging device and the external device.

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