Lens device, imaging device, and imaging system

Abstract

To provide a lens device that can move the target object to a desired position even when multiple operators are performing multiple types of operations. [Solution] The lens device comprises an optical member that is movable in accordance with a plurality of types of control by each of a plurality of operating units, and a determination means for determining a first operating unit for moving the optical member from the plurality of operating units, wherein the optical member moves in accordance with information relating to at least one of the target position and velocity of the optical member set by the first operating unit.

Description

Technical Field

[0001] The present invention relates to a lens device used for television shooting, movie shooting, and the like.

Background Art

[0002] In a conventional shooting system having a lens device, a camera device, an operation device, and the like, it is operated by a plurality of operators (operation units), and shooting is enabled by determining settings and operation commands reflected in the lens device and the camera device (see Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in a conventional shooting system, when there are several types of operations and command methods for each of a plurality of operators, it is not possible to move a drive target to a desired position. Here, "operation" is the user operation itself such as switch switching or rotation of an operation unit, and "command" refers to a command method for moving a drive target such as valid / invalid, position command, speed command, etc.

Means for Solving the Problems

[0005] A lens device as one aspect of the present invention includes an optical member movable in response to a plurality of types of controls by each of a plurality of operation units, and a determination means for determining a first operation unit for moving the optical member from the plurality of operation units, and the optical member moves in response to information regarding at least one of a target position and a speed of the optical member set by the first operation unit. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide a lens device that can move the target to a desired position even when multiple operators are each performing multiple types of operations. [Brief explanation of the drawing]

[0007] [Figure 1] A block diagram (Pattern 1) shows an example of the imaging system of Example 1. [Figure 2] This is a flowchart showing the process for selecting the command value in Example 1 (Pattern 1). [Figure 3] This is a schematic diagram showing the adoption and reflection of the command values ​​in Example 1 (Pattern 1). [Figure 4] A block diagram (Pattern 2) shows another example of the imaging system of Example 1. [Figure 5] This flowchart shows the process for selecting the command value in Example 1 (Pattern 2). [Figure 6] This is a schematic diagram (Pattern 2) showing the adoption and reflection of the command values ​​in Example 1. [Figure 7] This is a flowchart showing the process for selecting the command value in Example 1 (Pattern 3). [Figure 8] This is a flowchart showing the process for selecting the command value in Example 1 (Pattern 4). [Figure 9] This is a schematic diagram (Pattern 4) showing the adoption and reflection of the command values ​​in Example 1. [Figure 10] Block diagram (Pattern 1) showing the imaging system of Example 2. [Figure 11] This flowchart shows the process for selecting the command value in Example 2 (Pattern 1). [Figure 12] This flowchart shows the process for selecting the command value in Example 2 (Pattern 2). [Figure 13] This is a block diagram of the imaging system for Example 3. [Figure 14]This is a flowchart showing the flow of command value information display in Example 3. [Figure 15] This figure shows an example of how the command values ​​in Example 3 are displayed. [Modes for carrying out the invention]

[0008] The embodiments of the present invention will be described in detail below with reference to the drawings. In each figure, the same reference numeral is used for identical components, and redundant explanations are omitted.

[0009] Some lens systems have a function that gradually blurs the subject from a focused state as an image effect (hereinafter referred to as blur effect ON) (there is also a reverse function, hereinafter referred to as blur effect OFF). Some systems have a configuration that drives a back focus lens which is more sensitive than the focus lens, and in any case it is possible to shoot by deliberately shifting the focus away from the subject, or by gradually bringing it into focus from an out-of-focus state. The blur effect requires three operations: enabling / disabling the function (ON / OFF), adjusting the amount of blur, and adjusting the speed of blurring and returning to normal, resulting in a large number of operation types (operating parts). Furthermore, since the image during operation is used for the blur effect, the image during operation is important. In addition, the operation when the function is OFF is also important, which is a characteristic of this function.

[0010] Thus, in functions where there are multiple control elements such as position and speed, not just ON / OFF, conventional methods can result in unintended operations being reflected or the operation becoming complicated. In the case of functions that use video in motion, such as blurring effects, there is a possibility that unintended footage will be used or that the intended footage will be missed. Furthermore, in shooting systems with multiple operators, this problem becomes even greater. Therefore, even in functions with many control elements and operated by multiple operators, it is desirable to be able to smoothly switch between control units and reflect command values ​​with simple operations.

[0011] In addition, in this embodiment, the case where the present invention is applied to the above-described blurring effect is described, but the present invention is not limited thereto. The present invention is applicable to a predetermined function provided in the lens device.

Embodiment

[0012] (Pattern 1) FIG. 1 is a block diagram showing an example of the imaging system of this embodiment. The imaging system includes a lens device 100, a camera device 200, and an operation device 300.

[0013] First, the lens device 100 will be described. The lens device 100 includes a back focus lens 101, a back focus lens driving unit 102, a back focus lens position detection unit 103, an arithmetic unit 104, an external IF 105, and a communication unit 106. The lens device 100 also has a lens operation unit including a C operation member 109, a P operation member 110, and an S operation member 111. Further, the lens device 100 has optical members such as a zoom lens, a focus lens, and an aperture (not shown).

[0014] The back focus lens 101 is a lens group that is movable along the optical axis to adjust the back focus of the lens device 100, and is a lens with higher sensitivity than the focus lens. In this embodiment, the back focus lens 101 is also movable when turning on / off the blurring effect. As will be described later, the blurring effect can be operated from a plurality of operation units (operators) other than the lens operation unit.

[0015] The back focus lens driving unit 102 is an actuator for moving the back focus lens 101. In this embodiment, it is a DC motor, but it is not limited thereto.

[0016] The back focus lens position detection unit 103 is a position sensor for detecting the position of the back focus lens 101. In this embodiment, it is an encoder, but it is not limited thereto.

[0017] The arithmetic unit 104 is a CPU and includes a decision means 107 and a command value calculation means 108. When a command to move the back focus lens 101 is input, the decision means 107 determines the operation unit (first operation unit) that drives the back focus lens 101 and adopts the command value. The command value calculation means 108 calculates a drive signal based on the operation unit and command value determined by the decision means 107 and the position information from the back focus lens position detection unit 103, and outputs the calculated drive signal to the back focus lens drive unit 102. The arithmetic unit 104 also processes requests from the camera device 200 according to input from the communication unit 106, calculates information to be sent back to the camera device 200, and outputs it to the communication unit 106.

[0018] External IF105 is an interface that can be connected to an external device and is capable of inputting and outputting voltages and signals. In this embodiment, it is an interface for connection to the operating device 300. Voltages and signal information input from the operating device 300 are input to the calculation unit 104, and the output voltage and signal information generated by the calculation unit 104 are output to the operating device 300.

[0019] The communication unit 106 communicates with the camera device 200. Upon receiving commands or requests from the camera device 200, it outputs the received commands or requests to the arithmetic unit 104. In addition, when the arithmetic unit 104 receives information in response to commands or requests from the camera device 200, it transmits the input information to the camera device 200.

[0020] The lens control section is a control section for controlling the blur effect.

[0021] The C operating member 109 is an operating member for switching the blur effect ON / OFF. In this embodiment, it is a toggle switch, but it is not limited to this. The signal switched by the switch is input to the calculation unit 104 as a blur effect ON / OFF command.

[0022] The P operating member 110 is an operating member for changing the amount of blur effect (and for changing the target position of the back focus lens 101). In this embodiment, a rotary type volume switch is used, but it is not limited to this. The signal changed by the volume switch is input to the calculation unit 104 as a blur effect position command.

[0023] The S operating member 111 is an operating member that changes the speed of the back focus lens 101 (it is capable of changing the speed of the back focus lens 101). In this embodiment, a rotary type volume switch is used, but it is not limited to this. The signal that changes with the volume switch is input to the calculation unit 104 as a blur effect speed command.

[0024] Next, the camera device 200 will be described. The camera device 200 is an imaging device that can communicate with the lens device 100. The camera device 200 has an image sensor (not shown) and a communication unit 201, and transmits requests to the lens device 100 and receives information from the lens device 100 via communication.

[0025] Next, the operating device 300 will be described. The operating device 300 is an operating unit that can be connected to the lens device 100 and can control the blur effect. The operating device 300 has an external IF 301, a C operating member 302, a P operating member 303, and an S operating member 304.

[0026] The external IF301 is an interface that can be connected to the lens device 100 and is capable of inputting and outputting voltages and signals. It outputs the output voltage and signal information generated within the operating device 300 to the lens device 100.

[0027] The C operating member 302 is an operating member for switching the blur effect ON / OFF. In this embodiment, a toggle switch is used, but it is not limited to this. The signal switched by the switch is input to the lens device 100 via the external IF301 as a blur effect ON / OFF command.

[0028] The P operating member 303 is an operating member for changing the amount of blur in the blur effect. In this embodiment, a rotary type volume switch is used, but it is not limited to this. The signal changed by the volume switch is input to the lens device 100 via the external IF 301 as a blur effect position command.

[0029] The S operating member 304 is an operating member for changing the speed of the lens driven by the blurring effect. In this embodiment, a rotary type volume switch is used, but it is not limited to this. The signal changed by the volume switch is input to the lens device 100 via the external IF 301 as a blurring effect speed command.

[0030] The following describes the process of selecting an operation unit for controlling the blurring effect and determining the command value to be adopted. Figure 2 is a flowchart showing the flow of command value selection in this embodiment.

[0031] In step S201, the calculation unit 104 stores the input values ​​of the C operating member 109, the P operating member 110, and the S operating member 111 as command values ​​for the blurring effect on the lens device 100.

[0032] In step S202, the calculation unit 104 stores the input values ​​of the C operating member 302, the P operating member 303, and the S operating member 304 as command values ​​for the blurring effect on the operating device 300.

[0033] In step S203, the determination means 107 determines whether there is a change in the operation of turning the blur effect ON / OFF based on the changes in the command value of the C operating member 109 stored in step S201 and the command value of the C operating member 302 stored in step S202. If the lens device 100 determines that there is a change, it executes the process in step S204; if it determines that there is no change, it executes the process in step S207.

[0034] In step S204, the determination means 107 determines the operation unit and the command value to be adopted. Specifically, the determination means 107 determines the operation unit that was determined to have "changed" in step S203 as the operation unit for controlling the blurring effect, and adopts the command value from the determined operation unit. If changes are detected simultaneously, in this embodiment the command value from the operation device 300 is adopted, but it is not limited to this. For example, the lens device 100 side may be adopted, or it may be possible to determine this in the settings. This process is performed for each CPU processing sample, and since changes are detected simultaneously each time, it is rare for one command value to never be adopted, so this is not considered. In this embodiment, it is assumed that there has been a change on the operation device 300 side, and the explanation follows.

[0035] In step S205, the determination means 107 inputs the command value of the P operating member determined in step S204 to the command value calculation means 108.

[0036] In step S206, the determination means 107 inputs the command value of the S operating member determined in step S204 to the command value calculation means 108.

[0037] In step S207, the command value calculation means 108 calculates a drive signal for driving the back focus lens 101 based on the input command values ​​of the C operating member, P operating member, and S operating member.

[0038] The following shows how the position and speed of the back focus lens change depending on the selected command value, referring to Figure 3. Figure 3 is a schematic diagram illustrating the selection and reflection of the command value.

[0039] Figure 3(a) and (b) show the state of the blur effect (ON / OFF), the position and speed of the back focus lens 101. Figure 3(b) shows the state of the command values ​​of the lens operation section of the lens device 100. "Operation" is input from the C operation member 109, "Position" from the P operation member 110, and "Speed" from the S operation member 111. Figure 3(b) shows the state of the command values ​​of the operation device 300. "Operation" is input from the C operation member 302, "Position" from the P operation member 303, and "Speed" from the S operation member 304. Figures 3(a) and (b) show the state at different points in time; (a) shows each state at a specific point in time, while (b) shows the state at a more recent point in time than (a).

[0040] At point 31(a) in Figure 3, the blur effect is OFF, and the back focus lens 101 is stopped at the end position. At point (b), if the operating device 300 performs an operation to turn on the blur effect, for example, as shown in 33(b) in Figure 3, the command from the operating device 300 is adopted according to the flow shown in Figure 2. As a result, the blur effect is turned ON, and the back focus lens 101 is driven to the specified target position at the specified speed according to the command from the operating device 300.

[0041] At this time, when the P operating member 303 of the operating device 300 is operated, the back focus lens 101 is driven according to the operation. However, unless the C operating member 109 is operated from the lens device 100, the back focus lens 101 will not be driven even if the P operating member 110 is operated.

[0042] With the above configuration, by prioritizing the operation that follows the ON / OFF operation (the operation performed at the closest possible moment), it becomes possible for multiple operators to perform the operation intended by the user in functions involving multiple control components. (Pattern 2) As explained below, there are situations where it is better not to change the control unit (i.e., not to accept operations from other control units). For example, in a shooting system where multiple operators, including a remote operator from the cameraman, can control the blur effect, the cameraman might turn the blur effect ON / OFF while the remote operator is controlling it. In this case, the captured image will be affected, so a means to avoid this is necessary. An example of this will be explained below with reference to Figures 4 to 6. Note that components similar to those described in Pattern 1 are indicated by the same reference numerals and their explanations are omitted.

[0043] Figure 4 is a block diagram of another example of the imaging system of this embodiment. The imaging system in Figure 4 differs from the imaging system in Figure 1 in that an external device 400 is added.

[0044] The external device 400 is a communication device that can communicate with the lens device 100 and can control at least the blur effect. The external device 400 has a communication unit 401 and a calculation unit 402. The external device 400 also has an external operation unit including a C operation member 403, a P operation member 404, and an S operation member 405.

[0045] The communication unit 401 is a communication unit that communicates with the lens device 100. When it receives commands or requests from the lens device 100, it outputs the received commands or requests to the calculation unit 402. Conversely, when the calculation unit 402 inputs information in response to commands or requests from the lens device 100, it transmits the input information to the lens device 100.

[0046] The arithmetic unit 402 is the CPU. It calculates command values ​​based on input from the external operation unit and outputs them to the communication unit 401. It also processes requests from the lens device 100 according to input from the communication unit 401, calculates information to be sent back to the lens device 100, and outputs it to the communication unit 401.

[0047] The C operating member 403 is an operating member for switching the blur effect ON / OFF. In this embodiment, it is a toggle switch, but it is not limited to this.

[0048] The P operating member 404 is an operating member for changing the amount of blurring effect. In this embodiment, a rotary type volume switch is used, but it is not limited to this.

[0049] The S operating member 405 is an operating member for changing the speed of the lens driven by the blurring effect. In this embodiment, a rotary type volume switch is used, but it is not limited to this.

[0050] In this embodiment, the external device 400 can request to acquire control rights for the blurring effect by some means, such as a switch (not shown). Furthermore, all information from the external control unit is processed by the calculation unit 402 before being transmitted from the communication unit 401. However, the configuration may be such that at least one operation information from the external control unit is input as voltage values ​​or signal information, similar to the control device 300. When the decision means 107 receives a request to acquire control rights from the external device 400, it returns a signal indicating that control rights can be acquired (a signal indicating that it has been decided to select the control unit for controlling the blurring effect) if it is acceptable to grant control rights. When the decision means 107 has transmitted a signal indicating that control rights can be acquired, it will only accept control from the external control unit and will not accept control from control units other than the external control unit.

[0051] The following describes the process of selecting the control unit for controlling the blur effect and determining the command value to be adopted. Figure 5 is a flowchart showing the flow of command value adoption in this embodiment. Figure 5(a) shows the process of the lens device 100, and Figure 5(b) shows the process of the external device 400.

[0052] First, let's explain the flow chart in Figure 5(a).

[0053] The processes in steps S501 to S502 are the same as those in steps S201 to S202, so their explanation is omitted.

[0054] In step S503, the determination means 107 determines whether or not the external device 400 has acquired the right to operate. If the determination means 107 determines that the external device 400 has acquired the right to operate the blurring effect, it executes the process in step S504; otherwise, it executes the process in step S507. Even if the external device 400 has not acquired the right to operate, if a request for acquisition of the right to operate has been received, the determination means 107 will reply to the external device 400 with "OK to acquire the right to operate" if it is acceptable to grant the right to operate.

[0055] In step S504, the determination means 107 determines that the operation unit for controlling the blurring effect is an external operation unit (external device 400).

[0056] In step S505, the determination means 107 inputs the position command value of the blur effect received from the external device 400 to the command value calculation means 108.

[0057] In step S506, the determination means 107 inputs the speed command value of the blurring effect received from the external device 400 to the command value calculation means 108.

[0058] In step S507, the processes described in steps S203 to S206 (C operation change check process) in Figure 2 are performed.

[0059] Step S508 is the same as the process in step S207, so its explanation is omitted.

[0060] Next, we will explain the flow chart in Figure 5(b).

[0061] In step S509, the calculation unit 402 sends a request to the lens device 100 to acquire the right to operate.

[0062] In step S510, the calculation unit 402 determines whether or not it has received a signal from the lens device 100 indicating that it is possible to acquire control rights, that is, whether or not it has acquired control rights. If the calculation unit 402 determines that it has received a signal, it executes the process in step S511; otherwise, it executes the process in step S509. However, a timeout process may be provided, and the process may be terminated if a timeout occurs.

[0063] In step S511, the calculation unit 402 transmits the command value of the P operating member 404 to the lens device 100.

[0064] In step S512, the calculation unit 402 transmits the command value of the S operating member 405 to the lens device 100.

[0065] In step S513, the calculation unit 402 transmits the command value of the C operating member 403 to the lens device 100.

[0066] In this embodiment, the command values ​​for the P operating member 404, the S operating member 405, and the C operating member 403 are described as being transmitted separately, but they may also be divided into one or two commands and transmitted simultaneously.

[0067] The following shows how the position and speed of the back focus lens change depending on the selected command value, referring to Figure 6. Figure 6 is a schematic diagram illustrating the selection and reflection of the command value.

[0068] Figure 6(a) and (b) show the state of the blur effect (ON / OFF), the position and speed of the back focus lens 101. Figure 6(a) and (b) show the state of the command values ​​of the lens operation section of the lens device 100. "Operation" is input from the C operation member 109, "Position" from the P operation member 110, and "Speed" from the S operation member 111. Figure 6(3) shows the state of the command values ​​of the operation device 300. "Operation" is input from the C operation member 302, "Position" from the P operation member 303, and "Speed" from the S operation member 304. Figure 6(4) shows the state of the command values ​​of the external device 400. "Operation" is input from the C operation member 403, "Position" from the P operation member 404, and "Speed" from the S operation member 405. Figures 6(a) and (b) show the state at different points in time; (a) shows each state at a specific point in time, while (b) shows the state at a more recent point in time than (a).

[0069] At point 61(a) in Figure 6, the blur effect is OFF, and the back focus lens 101 is stopped at the end position. Assume that the external device 400 has acquired control at point (b). At this time, even if the control device 300 performs an ON / OFF operation of the blur effect, as shown in 63(b) in Figure 6, the operation will not be reflected. When the external device 400, which has control, performs an operation such as 64(b) in Figure 6, the command of the external device 400 is adopted according to the flow shown in Figure 5. As a result, the blur effect is turned ON, and the back focus lens 101 is driven to the specified target position at the specified speed according to the command of the external device 400.

[0070] The above configuration solves the problems encountered in situations where it is preferable not to change the control panel. (Pattern 3) As explained below, there are situations where the importance of the captured image is paramount, and unintended changes to the image are undesirable. For example, in live television broadcasts where the captured image is actually used, a blurring effect may cause the focus to gradually shift from the best focus, or gradually move from an out-of-focus state towards the best focus. If operations are reflected while the blurring effect is being applied, the resulting image will look unnatural, so a means to avoid this is necessary. In this embodiment, the determination means 107 functions as a determination means that determines whether or not it can accept operations from each of the multiple operation units. An example of this will be explained below with reference to Figures 4 and 7. Note that components similar to those described in Patterns 1 and 2 are indicated by the same reference numerals, and their explanations are omitted. The block diagram of the shooting system used in the following explanation will be the same as in Pattern 2, as shown in Figure 4.

[0071] The following describes the process of selecting the control unit for controlling the blur effect and determining the command value to be adopted. Figure 7 is a flowchart showing the flow of command value selection in this embodiment.

[0072] The processes in steps S701 to S702 are the same as those in steps S201 to S202, so their explanation is omitted.

[0073] In step S703, the determination means 107 determines whether the video captured by the lens device 100 (camera device 200) is actually being used. If the determination means 107 determines that the video is being used, it terminates this flow; otherwise, it executes the process in step S704. The method for determining whether the video is being used can be any information obtained from, for example, a tally signal or information from other connected devices, and is not limited to this. Also, if the captured video is no longer being used, the command may be reflected immediately, or it may be reflected from subsequent operations.

[0074] The processes in steps S704 through S709 are the same as those in steps S503 through S508, so their explanation is omitted.

[0075] This configuration solves the problem of situations where the focus is on the captured video and no user input should be reflected in it. (Pattern 4) If the control unit for turning the blur effect ON is different from the control unit for turning the blur effect OFF, the speed at which the image shifts out of focus from the best focus point may differ from the speed at which it shifts back to the best focus point. In the same situation, it is desirable for the system to operate at the same speed, but in the methods described in patterns 1 to 3, the above-mentioned problem arises because the system follows the speed command of the control unit for controlling the blur effect. Below, with reference to Figures 4, 8, and 9, an example of a method to solve the above problem will be described, in which, when switching from one to the other blur effect ON or OFF, the speed command of one of the control units for controlling the blur effect is used instead of the other. Components similar to those described in patterns 1 to 3 are indicated by the same reference numerals and their explanations are omitted. The block diagram of the shooting system used in the following description will be the same as in patterns 2 to 3, as shown in Figure 4.

[0076] The following describes the process of selecting the control unit for controlling the blur effect and determining the command value to be adopted. Figure 8 is a flowchart showing the flow of command value selection in this embodiment.

[0077] In step S801, the determination means 107 determines whether or not there is a change in the C operation. If the determination means 107 determines that there is a change in the C operation, it executes the process in step S802; otherwise, it executes the process in step S805. Here, the change is checked for the C operation members 109, 302, and 403. In addition, the change from OFF to ON is checked.

[0078] In step S802, the calculation unit 104 stores the P operation command value of the operation unit that was determined to have changed in step S801.

[0079] In step S803, the calculation unit 402 stores the S operation command value of the operation unit that was determined to have changed in step S801.

[0080] In step S804, the command value calculation means 108 calculates the command value for when the blur effect is ON, based on the position command value and speed command value stored in steps S802 and S803. Here, the calculated command value is converted into an output value and output to the back focus lens drive unit 102.

[0081] In step S805, the decision means 107 determines whether or not there is a change in operation C. If the decision means 107 determines that there is a change in operation C, it executes the process in step S806; otherwise, it terminates this flow. Here, the change from ON to OFF is checked.

[0082] In step S806, the calculation unit 104 stores the S operation command value stored in step S803. Importantly, it does not use the S operation command value of the operation unit that was determined to have changed in step S805. Assuming the case where the power is turned off while the blur effect is ON, the S operation command value may be stored in a non-volatile memory (not shown).

[0083] In step S807, the command value calculation means 108 calculates a command value for moving to the best focus position with the blur effect OFF, based on the speed command value stored in step S806. Here, the calculated command value is converted into an output value and output to the back focus lens drive unit 102.

[0084] The following diagram, with reference to Figure 9, shows how the position and speed of the back focus lens change depending on the selected command value. Figure 9 is a schematic diagram illustrating the selection and reflection of the command value.

[0085] Figure 9, section 91 shows the state of the blur effect (ON / OFF), the position and speed of the back focus lens 101. Figure 9, section 92 shows the state of the command values ​​of the lens operation section of the lens device 100. "Operation" is input from the C operation member 109, "Position" from the P operation member 110, and "Speed" from the S operation member 111. Figure 9, section 93 shows the state of the command values ​​of the operation device 300. "Operation" is input from the C operation member 302, "Position" from the P operation member 303, and "Speed" from the S operation member 304. Figure 9, section 94 shows the state of the command values ​​of the external device 400. "Operation" is input from the C operation member 403, "Position" from the P operation member 404, and "Speed" from the S operation member 405. Figures 9, (a), (b), and (c) show the state at different points in time; (a) shows each state at a certain point in time, while (b) shows the state at a point later than (a), and (c) shows the state at a point later than (b).

[0086] At point 91(a) in Figure 9, the blur effect is OFF, and the back focus lens 101 is stopped at the end position. At point (b), if the C operating member 109 of the lens device 100 is operated as shown in 92(b) in Figure 9, the command of the lens device 100 is adopted. As a result, the blur effect is turned ON, and the back focus lens 101 is driven to the specified target position at the specified speed according to the command of the lens device 100. At point (c), if the operating device 300 is operated as shown in 93(c) in Figure 9, the command to turn off the blur effect is followed by the command of the operating device 300. However, for the speed command, the speed when the blur effect is ON, that is, the speed command value shown in 92(b) in Figure 9, is adopted. As a result, the blur effect is turned OFF, and the back focus lens 101 is driven according to the speed command value when the blur effect is ON.

[0087] This pattern demonstrates an example where the speed command value used when the blur effect is ON is applied when the blur effect is OFF. However, this is not the only option; the speed command value used when the blur effect is OFF may also be applied when the blur effect is ON (for example, using the blur effect ON when entering a commercial and the blur effect OFF after a commercial). Alternatively, the system may determine whether to follow the previous speed command value based on the elapsed time since the last ON / OFF switch of the blur effect and the settings.

[0088] Alternatively, the position command value may be used instead of the speed command value, or both may be based on the previous values.

[0089] With the above configuration, it becomes possible to implement the user's intended operation while considering usability based on the characteristics of the functions. [Examples]

[0090] (Pattern 1) Example 1 describes the switching of the control unit and the adoption of command values ​​for controlling the blur effect. Some lenses driven by the blur effect have a configuration that moves a back focus lens, which is more sensitive than the focus lens. In recent years, there has been an increase in systems that allow for remote operation and instruction from a video engineer (VE) as well as the cameraman to adjust the back focus, and that are driven electrically. In such cases, the same lens is moved to perform two functions with different purposes, and if the control unit is determined separately for each function, there is a problem in that the user cannot operate it to the position they intend. This example shows an example of how to solve the above problem.

[0091] Figure 10 is a block diagram showing the imaging system of this embodiment. The imaging system of this embodiment differs from the imaging system of Figure 4 described in Embodiment 1 in that an R operating member 406 is added to the external device 400.

[0092] The R operating member 406 is an operating member for adjusting the back focus. In this embodiment, it is a rotary type volume switch, but it is not limited to this. The amount of R operating member 406 is output to the calculation unit 402.

[0093] The calculation unit 402 converts the input back focus adjustment control amount into a back focus adjustment command value and outputs it to the communication unit 401.

[0094] The communication unit 401 transmits the input command value for back focus adjustment to the lens device 100.

[0095] The lens device 100 converts the command value for back focus adjustment received from the external device 400 into a drive command using the calculation unit 104. In this embodiment, when back focus adjustment is performed, the back focus lens 101, which is driven by a blurring effect, is driven. Therefore, the converted drive command is output to the back focus lens drive unit 102.

[0096] The following describes the process of selecting the control unit for controlling the blur effect and back focus adjustment, and determining the command values ​​to be adopted. Figure 11 is a flowchart showing the flow of command value selection in this embodiment.

[0097] In step S1101, the calculation unit 104 determines whether or not back focus adjustment is in progress. The calculation unit 104 makes this determination based on information such as whether there is a command value input for back focus adjustment, whether there is a change in the command value, and whether or not back focus adjustment is in progress. If the calculation unit 104 determines that adjustment is in progress, it executes the process in step S1102; otherwise, it executes the process in step S1104.

[0098] In step S1102, the calculation unit 104 updates the amount of back focus adjustment based on the information received from the external device 400.

[0099] In step S1103, the calculation unit 104 calculates the command value for back focus adjustment.

[0100] In step S1104, the calculation unit 104 determines whether or not a blurring effect operation is in progress (including during operation). If the calculation unit 104 determines that an operation is in progress, it proceeds to step S1105; otherwise, it terminates this flow.

[0101] In step S1105, the calculation unit 104 updates the position command value for the blur effect.

[0102] In step S1106, the calculation unit 104 updates the speed command value for the blurring effect.

[0103] In step S1107, the calculation unit 104 updates the blur effect ON / OFF command value.

[0104] In step S1108, the calculation unit 104 calculates the command value for the blurring effect.

[0105] In step S1109, the calculation unit 104 converts the command value for back focus adjustment calculated in step S1103, or the command value for blur effect calculated in step S1108, into a drive signal. Furthermore, the calculation unit 104 outputs the converted drive signal to the back focus lens drive unit 102.

[0106] With the above configuration, by making the operation of back focus adjustment and blur effect mutually exclusive, it becomes possible to reflect the user's intended operation in either function. In this embodiment, the operation of back focus adjustment is performed by an external device 400, but it is not limited to this, and for example, it may be performed by a camera device 200. (Pattern 2) As explained below, there is a problem in that user operation becomes complicated. For example, when the same person operates both back focus adjustment and blur effect. Basically, back focus adjustment is performed when the camera device 200 and lens device 100 are connected, and the blur effect is a function controlled during shooting, but in some cases, fine adjustment of the back focus may be necessary depending on changes in the surrounding environment and various conditions. In such cases, the operation of deciding and operating the control unit for back focus adjustment and then deciding the control unit for controlling the blur function may be perceived as complicated. Below, with reference to Figures 10 and 12, an example of how to avoid the above problem will be explained. Note that components similar to those described in Example 1 and Pattern 1 are indicated by the same reference numerals and their explanations are omitted. The block diagram of the shooting system used in the following explanation will be the same as in Pattern 10, as shown in Figure 10.

[0107] The following describes the process of selecting the control unit for controlling the blur effect and back focus adjustment, and determining the command values ​​to be adopted. Figure 12 is a flowchart showing the flow of command value selection in this embodiment.

[0108] Since the processes in steps S1201 to S1208 are the same as those in steps S1101 to S1108, their explanation will be omitted.

[0109] In step S1209, the calculation unit 104 updates the operation unit for controlling back focus adjustment and blur effect. For example, if the calculation unit 104 determines in step S1201 that back focus adjustment is in progress, it determines the operation unit adopted in steps S1202 to S1203 as the operation unit for controlling the blur effect. Also, if the calculation unit 104 determines in step S1204 that blur effect operation is in progress and back focus adjustment is not in progress, it determines the ON / OFF operation unit for the blur effect adopted in step S1207 as the operation unit for controlling back focus adjustment.

[0110] The processes in step S1210 are the same as those in step S1109, so their explanation will be omitted.

[0111] Since some controls may only adjust the back focus or only manipulate the blur effect, it is best to perform the above processing only when it is possible to determine which control to use, and not update the control otherwise.

[0112] This configuration makes it possible to streamline user operations while ensuring that the user's intended actions are reflected. [Examples]

[0113] Examples 1 and 2 show a system in which all operations include an ON / OFF control member for the blur effect, a position control member, and a speed control member. However, in many cases, it is not possible to provide some of these control members depending on the shooting system. In some cases, settings can only be made from a settings menu. In such cases, the control unit and the amount of control for controlling the blur effect may be unclear, increasing the difficulty of operation. Furthermore, if there are multiple operators, it becomes necessary to know which control unit controls the blur effect and which control unit is in an operable state. Moreover, the blur effect described so far has characteristics such as the speed command value being important even for the OFF operation, so a more user-friendly method is desired when setting the blur amount and speed command. This embodiment shows an example that solves the above various problems.

[0114] Figure 13 is a block diagram of the imaging system of this embodiment. The imaging system of this embodiment differs from the imaging system of Figure 10 described in Embodiment 2 in that the lens device 100 includes a display unit 112 and does not include the S operating member 111. Components similar to those described in Embodiments 1 and 2 are indicated by the same reference numerals and their descriptions are omitted.

[0115] The lens device 100 does not have an S operating member 111, but instead has a setting UI (not shown) from which the speed of the blur effect can be set. However, it is not limited to this, and it may also be possible to set it using the display unit 112. The calculation unit 104 calculates the command value of the blur effect based on the speed setting. The calculation unit 104 also converts the information of the operating unit determined by the determination means 107 and the final command value information into display information, and outputs the converted display information to the display unit 112. In other words, the calculation unit 104 functions as a display control means that controls the information to be displayed on the display unit 112. Note that the display unit 112 may be provided in a configuration other than the lens device 100.

[0116] The following describes the process of outputting display information, which is mainly performed by the calculation unit 104. Figure 14 is a flowchart showing the flow of command value information display.

[0117] In step S1401, the calculation unit 104 acquires information from the operation unit for controlling the blurring effect.

[0118] In step S1402, the calculation unit 104 determines whether the conditions for outputting information from the operation unit for controlling the blur effect to the display unit 112 are met. If the calculation unit 104 determines that the conditions are met, it executes the process in step S1403; otherwise, it executes the process in step S1404. In this embodiment, multiple operators can control the blur effect, and the conditions are met when the blur effect is ON.

[0119] In step S1403, the calculation unit 104 creates display information to be displayed on the display unit 112 based on the information from the operation unit acquired in step S1401.

[0120] In step S1404, the calculation unit 104 deletes the display information to be displayed on the display unit 112.

[0121] In step S1405, the calculation unit 104 outputs the display information created in step S1403 or step S1404 to the display unit 112.

[0122] The following describes an example of the display of the command value for the blur effect output to the display unit 112. Figure 15 shows an example of the command value display.

[0123] Figure 15(a) displays the final command value status (ON / OFF, position command, speed command) and information on which control unit controls the blurring effect. (L) in the figure indicates the lens device 100. The current status can be viewed at a glance, including by the remote operator.

[0124] The following describes other patterns using Figures 15(b) to 15(d). Figure 15(b) shows the position command value and speed command value displayed numerically. This is useful when numerical values ​​are easier to use, such as when setting while checking the display unit 112. Therefore, it is not limited to cases where it is an operation unit for controlling the blur effect, but is also useful when changing the operation amount. Note that (D) in the figure indicates that the operation device 300 is an operation unit for controlling the blur effect.

[0125] Figure 15(c) shows the position command value graphically and the speed command value as the time to the target position. A characteristic of the blur function is that the target position does not often require high precision when shifting the focus. Also, the number of seconds until the blur effect ends is important information for the next shooting operation, so this kind of display is also useful. Note that (P) in the figure indicates that the external device 400 is the control unit for controlling the blur effect.

[0126] Figure 15(d) shows an example of the display during operation, with the blur effect turned ON by operating the control device 300, compared to Figure 15(c). During operation, the display is updated to count down the time to the target position.

[0127] The above is just one example of a display, but it is not limited to this. For example, if there is no speed control component, only the speed setting may be displayed. Also, even if the control component is easy to operate, it may be difficult to confirm. In such cases, the system may be configured to display only when the user needs it. Furthermore, since it may be bothersome to have it displayed all the time, the display may be switched according to the operation or operation, such as hiding it when the operation is finished. In addition, the status of remote operators may be displayed, or the status of all available operators may be displayed in a list. These may also be switchable in the settings.

[0128] This embodiment includes the following configuration. (Composition 1) An optical element that can move in accordance with multiple types of control by each of multiple operating parts, The system includes a determination means for determining a first operating unit for moving the optical member from the plurality of operating units, The lens device is characterized in that the optical member moves in accordance with information regarding at least one of the target position and velocity of the optical member, which is set by the first operating unit. (Configuration 2) The lens device according to configuration 1, characterized in that the determination means determines the operation unit that was operated at the time closest to the present among the plurality of operation units as the first operation unit. (Composition 3) The lens device has a predetermined function, The lens device according to configuration 1 or 2, characterized in that the determination means determines the operation unit that transmitted the ON / OFF signal for the predetermined function at the time closest to the present among the plurality of operation units as the first operation unit. (Composition 4) The lens device according to configuration 3, characterized in that the predetermined function includes a function to change the focus of the captured image by moving the optical member. (Composition 5) The lens device according to configuration 3 or 4, characterized in that each of the plurality of operating parts includes a first operating member capable of switching the ON / OFF of a predetermined function, a second operating member capable of changing the target position, and a third operating member capable of changing the speed. (Composition 6) The lens device according to any one of configurations 3 to 5, characterized in that when the predetermined function is switched from one of ON and OFF to the other of ON and OFF, the first operating unit determined by the determination means is different, and the optical member moves according to information relating to at least one of the target position and velocity of the optical member when the predetermined function is one of the two. (Composition 7) The lens device according to any one of configurations 1 to 6, characterized in that when the determination means transmits a signal to the first operating unit indicating that a decision has been made, the optical member does not move in response to control from the plurality of operating units other than the first operating unit. (Composition 8) The system further includes a determination means for determining whether or not it is possible to accept control from each of the aforementioned plurality of operating units. The lens device according to any one of configurations 1 to 7, characterized in that if the determination means determines that it is not possible to accept control from each of the plurality of operating units, the optical member does not move in response to the control from each of the plurality of operating units after the determination by the determination means. (Composition 9) The lens device according to configuration 8, characterized in that the determination means determines that when an image captured using the lens device is being used, it is not possible to accept control from each of the plurality of operation units, and determines that when the image is not being used, it is possible to accept control from each of the plurality of operation units. (Composition 10) The lens device each has a first and second function for moving the optical member, A lens device according to any one of configurations 1 to 9, characterized in that when one of the first and second functions is performed, the other of the first and second functions is not performed. (Composition 11) The first function described above is a function that changes the focus of the captured image by moving the optical element, The lens device according to configuration 10, characterized in that the second function is to adjust the back focus by moving the optical element. (Composition 12) The lens device according to configuration 10 or 11, characterized in that the first and second functions are performed in response to the operation of the first operating unit. (Composition 13) The lens device according to any one of configurations 1 to 12, further comprising a display control means for causing a display unit to display information relating to the first operating unit and information relating to at least one of the position and speed of the optical member. (Composition 14) A lens device according to any one of configurations 1 to 13, characterized in that at least one of the target position and the speed is changeable. (Composition 15) The lens device according to any one of configurations 1 to 14, characterized in that the optical element is a group of lenses that can move along the optical axis in the lens device. (Composition 16) A lens device described in any one of configurations 1 to 15, An imaging device characterized by having an image sensor. (Composition 17) A lens device described in any one of configurations 1 to 15, An imaging device equipped with an image sensor, A shooting system characterized by having an external device which is at least one of the plurality of operating units.

[0129] Although 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 its gist. [Explanation of Symbols]

[0130] 100 Lens device 101 Back focus lens (optical component) 107 Decision-making method

Claims

1. An optical element that can move in accordance with multiple types of control by each of multiple operating parts, The system includes a determination means for determining a first operating unit for moving the optical member from the plurality of operating units, The lens device is characterized in that the optical member moves in accordance with information regarding at least one of the target position and velocity of the optical member, which is set by the first operating unit.

2. The lens device according to claim 1, characterized in that the determination means determines the operation unit that was operated at the time closest to the present among the plurality of operation units as the first operation unit.

3. The lens device has a predetermined function, The lens device according to claim 1 or 2, characterized in that the determination means determines the operation unit that transmits the ON / OFF signal for the predetermined function at the timing closest to the present among the plurality of operation units as the first operation unit.

4. The lens device according to claim 3, characterized in that the predetermined function includes a function to change the focus of the captured image by moving the optical member.

5. The lens device according to claim 3, characterized in that each of the plurality of operating units includes a first operating member capable of switching the ON / OFF of a predetermined function, a second operating member capable of changing the target position, and a third operating member capable of changing the speed.

6. The lens device according to claim 3, characterized in that when the predetermined function is switched from one of ON and OFF to the other of ON and OFF, the first operating part determined by the determination means is different, and the optical member moves according to information relating to at least one of the target position and velocity of the optical member when the predetermined function is one of the two.

7. The lens device according to claim 1 or 2, characterized in that when the determination means transmits a signal to the first operating unit indicating that a decision has been made, the optical member does not move in response to control from the plurality of operating units other than the first operating unit.

8. The system further includes a determination means for determining whether or not it is possible to accept control from each of the aforementioned plurality of operating units. The lens device according to claim 1 or 2, characterized in that if the determination means determines that it is not possible to accept control from each of the plurality of operating units, the optical member does not move in response to the control from each of the plurality of operating units after the determination by the determination means.

9. The lens device according to claim 8, characterized in that the determination means determines that when an image captured using the lens device is being used, it is not possible to accept control from each of the plurality of operation units, and determines that when the image is not being used, it is possible to accept control from each of the plurality of operation units.

10. The lens device each has a first and second function for moving the optical member, The lens device according to claim 1 or 2, characterized in that when one of the first and second functions is performed, the other of the first and second functions is not performed.

11. The first function described above is a function that changes the focus of the captured image by moving the optical element, The lens device according to claim 10, characterized in that the second function is to adjust the back focus by moving the optical element.

12. The lens device according to claim 10, characterized in that the first and second functions are performed in response to the operation of the first operating unit.

13. The lens device according to claim 1 or 2, further comprising display control means for causing a display unit to display information relating to the first operating unit and information relating to at least one of the position and speed of the optical member.

14. The lens device according to claim 1 or 2, characterized in that at least one of the target position and the speed is changeable.

15. The lens device according to claim 1 or 2, characterized in that the optical member is a group of lenses that can move along the optical axis in the lens device.

16. A lens device according to claim 1 or 2, An imaging device characterized by having an image sensor.

17. A lens device according to claim 1 or 2, An imaging device equipped with an image sensor, A shooting system characterized by having an external device which is at least one of the plurality of operating units.

Images