Control device, interchangeable lens, control method, and program

Abstract

To provide a control device capable of controlling a unit in an interchangeable lens in the state in which the interchangeable lens is not attached to a camera.SOLUTION: A control device includes a unit and is for controlling an interchangeable lens that is detachably and communicably attached to an imaging device. The control device includes a determination section that determines whether the interchangeable lens is attached to the imaging device, and a drive control section that controls the unit using at least one of information from the imaging device and information from the interchangeable lens when the interchangeable lens is attached to the imaging device, and that controls the unit using the information from the interchangeable lens when the interchangeable lens is not attached to the imaging device.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a control device, an interchangeable lens, a control method, and a program. [Background technology]

[0002] Interchangeable camera lenses are available in a wide variety of specifications, and because of their versatility of having a common mount for each type, they are expected to be widely used in medical, industrial, etc. Patent Document 1 proposes a method of using interchangeable lenses in devices other than cameras. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-78930 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the method of Patent Document 1 requires that the device has a means for communicating with interchangeable lenses and a compatible mount.

[0005] Furthermore, interchangeable lenses generally do not have a power source, and the units within the interchangeable lens cannot be driven when the lens is not attached to a camera.

[0006] An object of the present invention is to provide a control device that is capable of controlling units within an interchangeable lens when the lens is not attached to a camera. [Means for solving the problem]

[0007] A control device as one aspect of the present invention is a control device for controlling an interchangeable lens that has a unit and is detachably and communicatively attached to an imaging device, and is characterized in having a determination unit that determines whether the interchangeable lens is attached to the imaging device, and a drive control unit that, if the interchangeable lens is attached to the imaging device, controls the unit using at least one of information from the imaging device and information from the interchangeable lens, and, if the interchangeable lens is not attached to the imaging device, controls the unit using information from the interchangeable lens. Effect of the Invention

[0008] According to the present invention, it is possible to provide a control device that is capable of controlling units within an interchangeable lens when the lens is not attached to a camera. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a block diagram of an interchangeable lens according to a first embodiment. [Figure 2A] 1 is a diagram showing a first configuration of an interchangeable lens according to a first embodiment. [Figure 2B] 4 is a diagram showing a second configuration of the interchangeable lens of Example 1. FIG. [Diagram 3] 5 is a flowchart showing a switching process of a control method for a unit in the interchangeable lens of the first embodiment. [Figure 4] FIG. 11 is a block diagram of an interchangeable lens according to a second embodiment. [Figure 5A] FIG. 11 is a diagram showing a first configuration of an interchangeable lens according to the second embodiment. [Figure 5B] FIG. 13 is a diagram showing a second configuration of the interchangeable lens of the second embodiment. [Figure 5C] FIG. 13 is a diagram showing a third configuration of the interchangeable lens of Example 2. [Figure 6] 10 is a flowchart showing a switching process of a control method for a unit in an interchangeable lens of Example 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] 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

[0011] 1(a) is a block diagram of an interchangeable lens 100 of this embodiment. The interchangeable lens 100 is configured to be detachably and communicably attached to an imaging device.

[0012] The interchangeable lens 100 has an interchangeable lens substrate 101. The interchangeable lens substrate 101 is equipped with an interchangeable lens CPU (control device) 102, an aperture control means 103, an anti-vibration control means 104, and a focus control means 105. The interchangeable lens CPU 102 includes a communication means 106, a control switching means 107, and a drive control means (drive control section) 108.

[0013] The interchangeable lens 100 also has an adjustable aperture 109, an anti-vibration lens 110, a zoom lens 111, and a focus lens 112 as an imaging optical system. The adjustable aperture 109 can change the size of the aperture opening to adjust the amount of light passing through the imaging optical system. The anti-vibration lens 110 can reduce vibrations in the imaging optical system due to camera shake or the like. The zoom lens 111 can change the focal length and angle of view of the imaging optical system. The focus lens 112 can change the focal length of the imaging optical system.

[0014] The drive control means 108 controls the variable aperture 109 via the aperture control means 103. The drive control means 108 also controls the vibration-proof lens 110 via the vibration-proof control means 104. Furthermore, the drive control means 108 controls the focus lens 112 via the focus control means 105. As shown in FIG. 1(b), the drive control means 108 also includes a determination means (determination unit) 108a that determines whether the interchangeable lens 100 is attached to the imaging device. The determination means 108a may be provided in the interchangeable lens CPU 102. The control switching means 107 switches the control of the drive control means 108.

[0015] The interchangeable lens 100 also has a lens mount (mount section) 113 that can be attached to an imaging device or an accessory. The lens mount 113 includes a communication terminal 115, a logic system power supply terminal 116, and a power system power supply terminal 117. The interchangeable lens CPU 102 receives power from a logic system power supply via the logic system power supply terminal 116 and operates. The communication means 106 communicates with the imaging device or the accessory via the communication terminal 115. The aperture control means 103, the vibration reduction control means 104, and the focus control means 105 receive power from a power system power supply via the power system power supply terminal 117 and operate. In this embodiment, the logic system power supply terminal 116 and the power system power supply terminal 117 form a first power receiving section.

[0016] The interchangeable lens 100 also has a first operation ring (third operation member) 118 that can be operated by the user, and a first pulse encoder 119 that detects the amount of rotational operation of the first operation ring 118. The amount of rotational operation of the first operation ring 118 detected by the first pulse encoder 119 is transmitted to the interchangeable lens CPU 102. The operation target of the first operation ring 118 is set by the camera 200.

[0017] The interchangeable lens 100 also has a second operation ring 120 that can be operated by the user, and a zoom encoder 121. When the second operation ring 120 is rotated, a cam ring (not shown) mechanically connected to the second operation ring 120 rotates. The zoom lens 111 moves along the optical axis due to a cam groove portion provided in the cam ring. The zoom encoder 121 detects the position of the zoom lens 111. The position of the zoom lens 111 detected by the zoom encoder 121 is transmitted to the interchangeable lens CPU 102.

[0018] The interchangeable lens 100 also has a third operation ring (first operation member) 122 that can be operated by the user, a second pulse encoder 123 that detects the amount of rotational operation of the third operation ring 122, and a focus switch 124. The amount of rotational operation of the third operation ring 122 detected by the second pulse encoder 123 is transmitted to the interchangeable lens CPU 102. The focus switch 124 is a switch for switching between autofocus (AF) and manual focus (MF).

[0019] Furthermore, the interchangeable lens 100 has an angular velocity sensor 125 that detects vibration caused by hand shake or the like, an anti-vibration lens encoder 126 that detects the position of the anti-vibration lens 110, and an anti-vibration switch (second operating member) 127. The anti-vibration switch 127 is a switch for switching anti-vibration on and off.

[0020] 2A shows a first configuration in which the interchangeable lens 100 is attached to a camera (imaging device) 200. In the first configuration, the interchangeable lens 100 is supplied with power from the camera 200.

[0021] The camera 200 has a camera board 201, a camera power supply 202, and a camera mount 203. The camera board 201 has a camera CPU 204 and a power supply means 205. The camera CPU 204 includes a communication means 206. The camera mount 203 has a communication terminal 207, a logic system power supply terminal 208, and a power system power supply terminal 209. When the interchangeable lens 100 is attached to the camera 200, the communication terminal 115 and the communication terminal 207, the logic system power supply terminal 116 and the logic system power supply terminal 208, and the power system power supply terminal 117 and the power system power supply terminal 209 are connected to each other.

[0022] 2B shows a second configuration in which the interchangeable lens 100 is connected to a power supply device 300. In the second configuration, the interchangeable lens 100 is powered by the power supply device 300.

[0023] The power supply device 300 has a power supply means 301, a power source 302, a logic system power supply terminal 303, and a power system power supply terminal 304. When the interchangeable lens 100 is connected to the power supply device 300, the logic system power supply terminal 116 and the logic system power supply terminal 303, and the power system power supply terminal 117 and the power system power supply terminal 304 are connected, respectively.

[0024] The process of switching the control method of the units in the interchangeable lens 100 in this embodiment will be described below. Fig. 3(a) is a flowchart showing the process of switching the control method of the units in the interchangeable lens 100 in this embodiment. This flow starts when the logic system power supply terminal 116 receives logic system power and the interchangeable lens CPU 102 is started. Fig. 3(b) and Fig. 3(c) respectively show the power supply signals and communication signals of the logic system power supply when the interchangeable lens 100 is in the first configuration and the second configuration.

[0025] In step S101, the interchangeable lens CPU 102 transmits information via the communication means 106.

[0026] In step S102, the interchangeable lens CPU 102 determines whether the communication means 106 is capable of receiving information. If it is determined that the communication means 106 is capable of receiving information, the process of step S103 is executed. If it is determined that the communication means 106 is not capable of receiving information, the process of step S105 is executed.

[0027] In step S102, when the interchangeable lens 100 is in the first configuration, the communication means 106 receives information from the camera 200 via the communication means 206. When the interchangeable lens 100 is in the second configuration, the communication terminal 115 is not connected, so the communication means 106 cannot receive information.

[0028] In step S103, the interchangeable lens CPU 102 causes the communication means 106 to transmit and receive information.

[0029] In step S104, the control switching means 107 switches the control method of the drive control means 108 for the units in the interchangeable lens 100 to the first control method.

[0030] In step S105, the control switching means 107 switches the control method of the drive control means 108 for the units in the interchangeable lens 100 to the second control method.

[0031] In this embodiment, when the interchangeable lens 100 is in a first configuration, the drive control means 108 controls the units within the interchangeable lens 100 using a first control method. Also, when the interchangeable lens 100 is in a second configuration, the drive control means 108 controls the units within the interchangeable lens 100 using a second control method.

[0032] In the first control method, when auto focus (AF) is selected by the focus switch 124, the drive control means 108 controls the focus lens 112 via the focus control means 105 using information from the camera 200 received by the communication means 106. When manual focus (MF) is selected by the focus switch 124, the drive control means 108 controls the focus lens 112 via the focus control means 105 using the rotation operation amount of the third operation ring 122 transmitted to the interchangeable lens CPU 102. Note that, in this embodiment, the drive control means 108 controls the focus lens 112 in a focus mode set by the user, but the drive control means 108 may control the focus lens 112 in a focus mode based on information from the camera 200. The rotation operation amount of the third operation ring 122 is transmitted to the camera 200 by the communication means 106.

[0033] Furthermore, the amount of rotation of the first operation ring 118 transmitted to the interchangeable lens CPU 102 is sent to the camera 200 by the communication means 106. The drive control means 108 controls an operation target set by the camera 200.

[0034] In addition, the drive control means 108 controls the vibration-proof lens 110 using information from the camera 200 .

[0035] In the second control method, regardless of which is selected by focus switch 124, drive control means 108 controls focus lens 112 via focus control means 105 using the rotation operation amount of third operation ring 122 transmitted to interchangeable lens CPU 102. In other words, drive control means 108 controls focus lens 112 in the manual focus mode.

[0036] Furthermore, the drive control means 108 controls the variable aperture 109 via the aperture control means 103 using the amount of rotation of the first operation ring 118 transmitted to the interchangeable lens CPU 102 .

[0037] Furthermore, the drive control means 108 controls the vibration-proof lens 110 when the vibration-proof switch 127 is in vibration-proof ON state.

[0038] As described above, according to the configuration of this embodiment, the interchangeable lens 100 is capable of controlling units within the interchangeable lens 100 even when it is not attached to the camera 200.

[0039] In this embodiment, the determination unit 108a determines that the interchangeable lens 100 is attached to the camera 200 when the communication unit 106 is capable of receiving information from the imaging device, but the present invention is not limited to this. The determination unit 108a may determine that the interchangeable lens 100 is attached to the camera 200 using the state of an operation unit that allows the user to select whether or not the interchangeable lens 100 is attached to the camera 200. EXAMPLES

[0040] 4 is a block diagram of an interchangeable lens 500 of this embodiment. The configuration of the interchangeable lens 500 is basically the same as that of the interchangeable lens 100 of embodiment 1. In this embodiment, only configurations different from embodiment 1 will be described, and descriptions of similar configurations will be omitted.

[0041] The interchangeable lens 500 has an external power supply receiving means (second power receiving section) 128. The external power supply receiving means 128 supplies the logic system power supply and the power system power supply to the interchangeable lens substrate 101 from the power received from the external power supply.

[0042] 5A to 5C respectively show first to third configurations of the interchangeable lens 500. In the first configuration, the interchangeable lens 500 is attached to the camera 200 and receives power from the camera 200. In the second configuration, the interchangeable lens 500 is connected to an external power supply means 400 and receives power from the external power supply means 400. In the third configuration, the interchangeable lens 500 is attached to the camera 200 and connected to the external power supply means 400 and receives power from the camera 200 and the external power supply means 400.

[0043] The process of switching the control method of the units in the interchangeable lens 500 in this embodiment will be described below. Fig. 6 is a flowchart showing the process of switching the control method of the units in the interchangeable lens 500 in this embodiment. This flow starts when the logic system power supply terminal 116 receives logic system power and the interchangeable lens CPU 102 is started up.

[0044] In step S201, the interchangeable lens CPU 102 determines whether or not the external power source power receiving means 128 is receiving power. If it is determined that the external power source power receiving means 128 is receiving power, i.e., if the interchangeable lens 500 is in the second or third configuration, the process of step S202 is executed. If it is determined that the external power source power receiving means 128 is not receiving power, i.e., if the interchangeable lens 500 is in the first configuration, the process of step S204 is executed.

[0045] In step S202, the interchangeable lens CPU 102 transmits information via the communication means 106.

[0046] In step S203, the interchangeable lens CPU 102 determines whether the communication means 106 is capable of receiving information. If it is determined that the communication means 106 is capable of receiving information, i.e., if the interchangeable lens 500 is in the third configuration, the process of step S204 is executed. If it is determined that the communication means 106 is not capable of receiving information, i.e., if the interchangeable lens 500 is in the second configuration, the process of step S206 is executed.

[0047] In step S204, the interchangeable lens CPU 102 causes the communication means 106 to transmit and receive information.

[0048] In step S205, the control switching means 107 switches the control method of the drive control means 108 for the units in the interchangeable lens 100 to the first control method.

[0049] In step S206, the control switching means 107 switches the control method of the drive control means 108 for the units in the interchangeable lens 100 to the second control method.

[0050] In this embodiment, when the interchangeable lens 100 is in the first configuration or the third configuration, the drive control means 108 controls the units within the interchangeable lens 100 using the first control method. Also, when the interchangeable lens 100 is in the second configuration, the drive control means 108 controls the units within the interchangeable lens 100 using the second control method.

[0051] In this embodiment, the determination unit 108a determines that the interchangeable lens 100 is attached to the camera 200 when the communication unit 106 is capable of receiving information from the imaging device, but the present invention is not limited to this. The determination unit 108a may determine that the interchangeable lens 100 is attached to the camera 200 using the state of an operation unit that allows the user to select whether or not the interchangeable lens 100 is attached to the camera 200. The determination unit 108a may also determine that the interchangeable lens 100 is attached to the camera 200 using the state of a switch that switches on and off the reception of power to the internal circuitry. [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.

[0052] The disclosure of this embodiment includes the following configurations and methods.

[0053] (Configuration 1) A control device for controlling an interchangeable lens that is detachably and communicably attached to an imaging device, comprising: a determination unit that determines whether the interchangeable lens is attached to the imaging device; a drive control unit that controls the unit using at least one of information from the imaging device and information from the interchangeable lens when the interchangeable lens is attached to the imaging device, and controls the unit using information from the interchangeable lens when the interchangeable lens is not attached to the imaging device. (Configuration 2) The control device according to configuration 1, characterized in that the determination unit determines that the interchangeable lens is attached to the imaging device when the interchangeable lens is capable of receiving a signal from the imaging device, and determines that the interchangeable lens is not attached to the imaging device when the interchangeable lens is unable to receive a signal from the imaging device. (Configuration 3) the interchangeable lens includes a first power receiving unit capable of receiving power from the imaging device, The control device according to configuration 1 or 2, characterized in that the determination unit determines that the interchangeable lens is attached to the imaging device when the first power receiving unit is receiving power, and determines that the interchangeable lens is not attached to the imaging device when the first power receiving unit is not receiving power. (Configuration 4) the interchangeable lens includes a first power receiving unit capable of receiving power from the imaging device, and a second power receiving unit capable of receiving power from a device other than the imaging device; The control device described in any one of configurations 1 to 3, characterized in that the determination unit determines that the interchangeable lens is attached to the imaging device when the first power receiving unit is receiving power, and determines that the interchangeable lens is not attached to the imaging device when the second power receiving unit is receiving power and the first power receiving unit is not receiving power. (Configuration 5) the interchangeable lens includes a focus lens and a first operating member capable of operating manual focus; The control device described in any one of configurations 1 to 4, characterized in that when the interchangeable lens is attached to the imaging device, the drive control unit controls the focus lens in a focus mode set by a user or in a focus mode based on information from the imaging device, and when the interchangeable lens is not attached to the imaging device, the drive control unit controls the focus lens in a manual focus mode. (Configuration 6) the interchangeable lens includes an anti-vibration lens and a second operating member for turning anti-vibration on and off; The control device described in any one of configurations 1 to 5, characterized in that when the interchangeable lens is attached to the imaging device, the drive control unit controls the anti-vibration lens using information from the imaging device, and when the interchangeable lens is not attached to the imaging device, the drive control unit controls the anti-vibration lens when the operating member is set to anti-vibration on. (Configuration 7) the interchangeable lens includes an aperture unit and a third operation member for operating an operation target set by the imaging device; The control device according to any one of configurations 1 to 6, characterized in that the drive control unit controls an operation target set by the imaging device when the interchangeable lens is attached to the imaging device, and controls the aperture unit when the interchangeable lens is not attached to the imaging device. (Configuration 8) An interchangeable lens that is detachably and communicably attached to an imaging device, A control device according to any one of configurations 1 to 7; An interchangeable lens comprising: (Configuration 9) a mount portion for mounting the interchangeable lens on the imaging device; 9. The interchangeable lens according to configuration 8, further comprising a first power receiving unit provided in the mount unit and capable of receiving power from the imaging device. (Configuration 10) a mount portion for mounting the interchangeable lens on the imaging device; a first power receiving unit provided on the mount unit and capable of receiving power from the imaging device; 10. The interchangeable lens according to configuration 8 or 9, further comprising a second power receiving unit provided at a position different from the mount unit and capable of receiving power from a device different from the imaging device. (Method 1) A control method for controlling an interchangeable lens that is detachably and communicatively attached to an imaging device, the method comprising: determining whether the interchangeable lens is attached to the imaging device; a step of controlling the unit using at least one of information from the imaging device and information from the interchangeable lens when the interchangeable lens is attached to the imaging device, and a step of controlling the unit using information from the interchangeable lens when the interchangeable lens is not attached to the imaging device. (Configuration 11) A program for causing a computer to execute the control method according to method 1.

[0054] 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]

[0055] 100,500 Interchangeable lenses 102 Interchangeable lens CPU (control device) 108 Drive control means (drive control section) 108a Judgment means (judgment unit) 109 Variable aperture (unit) 112 Focus lens (unit) 200 Camera (imaging device)

Claims

A control device for controlling an interchangeable lens detachable from an imaging device, a determination unit that determines whether it is a first state in which the interchangeable lens is attached to the imaging device or a second state in which the interchangeable lens is not attached to the imaging device; and a drive control unit that controls driving of an optical unit included in the interchangeable lens, wherein the drive control unit controls the driving using information and power from the imaging device in the first state, and controls the driving using power from an external power source different from the imaging device and the interchangeable lens in the second state. A control device characterized by that.

2. The determination unit determines the first state based on the fact that the interchangeable lens can receive information from the imaging device, and determines the second state based on the fact that the interchangeable lens cannot receive information from the imaging device. The control device according to claim 1, characterized by that.

3. The determination unit determines the first state based on the fact that the interchangeable lens is receiving power from the imaging device, and determines the second state based on the fact that the interchangeable lens is not receiving power from the imaging device. The control device according to claim 1 or 2, characterized by that.

4. The determination unit determines the first state based on the fact that the interchangeable lens is receiving power from the imaging device, and determines the second state based on the fact that the interchangeable lens is not receiving power from the imaging device and is receiving power from the external power source. The control device according to claim 1 or 2, characterized by that.

5. The optical unit is a focus lens that moves during focusing. The control device according to claim 1 or 2, characterized by that.

6. The interchangeable lens can be set to an autofocus mode and a manual focus mode by a user, and the drive control unit controls the driving according to the setting in the first state, and controls the driving in the manual focus mode regardless of the setting in the second state. The control device according to claim 5, characterized by that.

7. The optical unit is an anti-vibration lens that moves during anti-vibration. The control device according to claim 1 or 2, characterized by that.

8. The interchangeable lens can be set to turn on and off the anti-vibration by a user, The drive control unit controls the drive according to the setting in the second state, the control device according to claim 7.

9. The control device according to claim 1 or 2, wherein the optical unit is a diaphragm whose aperture size is changeable.

10. The interchangeable lens includes an operation member operated by a user. In the first state, an object other than the diaphragm is controlled by an operation of the operation member, and in the second state, driving of the diaphragm is controlled by an operation of the operation member, the control device according to claim 9.

11. The drive control unit controls the drive without using information and power from the imaging device in the second state, the control device according to claim 1 or 2.

12. An interchangeable lens, comprising: the control device according to claim 1 or 2; and the optical unit.

13. The interchangeable lens according to claim 12, further comprising a first power receiving unit used for receiving power from the imaging device.

14. The interchangeable lens according to claim 13, further comprising a mount portion to be mounted on the imaging device, wherein the power receiving unit is provided in the mount portion.

15. The interchangeable lens according to claim 14, further comprising a second power receiving unit provided at a position different from the mount portion and used for receiving power from an external power source.

16. A control method for controlling an interchangeable lens detachable from an imaging device, comprising: a determination step of determining whether the interchangeable lens is in a first state of being mounted on the imaging device or a second state of not being mounted on the imaging device; a control step of controlling driving of an optical unit included in the interchangeable lens; wherein in the control step, in the first state, the driving is controlled using information and power from the imaging device, and in the second state, the driving is controlled using power from an external power source different from the imaging device and the interchangeable lens without using information and power from the imaging device.

17. A program, causing a computer to execute the control method according to claim 16.

Images