JP5546318B2 - LENS DEVICE, AUTOFOCUSING OPERATION DEVICE, AND IMAGING DEVICE - Google Patents

Description

The present invention relates to a lens apparatus having an automatic focusing operation function, an automatic focusing operation apparatus, and an imaging apparatus .

  Conventionally, as an example of a lens operating device having an autofocus function, an operating device described in Patent Document 1 can be cited. The focus demand in Patent Document 1 includes an operation unit necessary for autofocus operation, such as a switch for switching between autofocus operation and manual focus operation, and a switch for instructing a focus speed during autofocus. Thus, in order to operate a lens device having an autofocus function, a focus demand having a dedicated operation unit corresponding to the autofocus function is required.

  Also, when it is desired to operate the autofocus function with zoom demand, it is necessary to provide an operation unit dedicated to the autofocus function in the zoom demand.

JP 2005-292779 A

  However, if an autofocus operation is enabled in either focus demand or zoom demand according to the operator's preference, there is a problem that conventional demand that does not support the autofocus function cannot be used. It was.

  In Patent Document 1, an operating device separate from the focus demand is proposed through a signal frequency selection device used for focus detection. However, since a connector or the like for connecting to the lens body is required, there are problems such as an increase in the lens body or an increase in manufacturing cost.

An object of the present invention is to solve the above-described problems, and a lens device and an automatic focusing operation capable of operating the autofocus function even in a demand (operation unit) without an operation unit dedicated to the autofocus function. An apparatus and an imaging device are provided.

In order to achieve the above object, a lens apparatus according to the present invention includes a focus lens unit that moves during focusing, and a focusing state detection unit that detects a focusing state, and the detection result of the focusing state detection unit An automatic focusing function for driving the focus lens unit based on an operation unit connected to the lens apparatus to enable or disable the automatic focusing function. When the determination unit determines whether or not the operation unit has the automatic focusing operation function, the determination unit determines whether or not the operation unit has the automatic focusing operation function. Te, characterized in that it comprises a allocation unit for allocating the automatic focusing operation function.
In order to achieve the above object, an automatic focusing operation device according to the present invention includes a focus lens unit that moves during focusing, and a focusing state detection unit that detects a focusing state. An automatic focusing operation device connected to a lens device having an automatic focusing function for driving the focus lens unit based on a detection result, wherein the operation unit connected to the automatic focusing operation device is the automatic focusing device. Determining means for determining whether or not to have an automatic focusing operation function for operating whether to enable or disable the focusing function; and the determination means, if the operating unit does not have the automatic focusing operation function In the case of determination, an assigning unit that assigns the automatic focusing function to an operation unit included in the operation unit is provided.
In order to achieve the above object, an automatic focusing operation device according to the present invention includes a focus lens unit that moves during focusing, and a focusing state detection unit that detects a focusing state. An automatic focusing operation device connected to a lens apparatus having an automatic focusing function that drives the focus lens unit based on a detection result, and operates whether the automatic focusing function is enabled or disabled Determine whether the automatic focusing operation means and the operation unit connected to the automatic focusing operation device have an automatic focusing operation function for operating whether to enable or disable the automatic focusing function And determining means for causing the automatic focusing operation means to function when it is determined that the operation unit does not have the automatic focusing operation function.

According to the lens apparatus, the automatic focusing operation apparatus, and the imaging apparatus according to the present invention, since a demand without an automatic focusing operation function can be applied to the automatic focusing lens, an operation apparatus having an automatic focusing operation function is newly provided. There is no need.

1 is a block circuit configuration diagram of Embodiment 1. FIG. It is a front view of a focus demand. It is an operation | movement flowchart figure. It is a process flowchart figure in the case of the rotation end of step S4 of FIG. It is another process flowchart figure in the case with the rotation end of step S4 of FIG. It is a flowchart figure of the function allocation process of step S6 of FIG. FIG. 6 is a configuration diagram of Example 2. 6 is a block circuit configuration diagram of Embodiment 2. FIG. It is a front view of the operation part of an automatic focusing operation apparatus. It is the block diagram which installed the automatic focusing operation apparatus in the focus demand vicinity. It is the block diagram which installed the automatic focusing operation apparatus in the zoom demand vicinity. It is the block diagram which installed the automatic focusing operation apparatus in the dolly operation part vicinity. It is a block diagram which applied the automatic focusing operation apparatus to the lens of the uniaxial 2 operation system. FIG. 10 is a configuration diagram in which a focus demand is combined with the automatic focusing operation device according to the third embodiment. It is a block diagram which combined the zoom demand with the automatic focusing operation apparatus. FIG. 6 is a block circuit configuration diagram of Embodiment 4. It is a block diagram which combined the focus demand with the automatic focusing operation apparatus. It is a flowchart figure of an allocation function. It is a process flowchart figure by an automatic focusing on / off switch.

  The present invention will be described in detail based on the embodiments shown in the drawings.

FIG. 1 is a block circuit configuration diagram of the television lens apparatus according to the first embodiment. A focus demand (operation means) 20 as an operation unit is connected to a lens apparatus 10 having a movable optical member for zooming and focusing. The lens device 10 is moved to change the focus state based on the detection result (focusing on the subject) based on an automatic focus detection unit (focus state detection means ) 13 that detects the focus state of the subject. A focus lens unit. Here, the lens device 10 includes a focus drive unit 12 that drives the focus lens unit, and a focus control unit (focus control unit) that transmits a drive signal to the focus drive unit 12 based on the detection result of the automatic focus detection unit 13. 11.

The demand function discriminating unit (discriminating unit) 14 of the lens apparatus 10 is an autofocusing device in which the focus demand 20 operates an autofocus function for driving the focus lens unit based on the detection result of the autofocus detection unit 13 described above. Determine whether there is an operation function. Here, the automatic focusing operation function determination is performed based on the detection result of the automatic focusing operation command signal or the detection of the demand ID, but the automatic focusing operation function may be determined by other means. Note that the operation of the automatic focusing function here refers to switching whether to enable or disable the automatic focusing function, switching the moving speed of the focus lens unit when performing automatic focusing, and other operations. Includes operations related to autofocus. In addition, the type of demand and the presence / absence of the rotation end of the operation knob of the focus demand 20 are also determined.

Further, the function allocating unit (allocating unit) 15 of the lens apparatus 10 allocates an operation command signal (not necessarily a signal related to the automatic focusing operation function) output from the focus demand 20 to the command signal of the automatic focusing operation function. In other words, the operation command signal transmitted from the focus demand 20 is interpreted as a signal of an automatic focusing operation function for switching the validity / invalidity of the automatic focusing function, and is used as a signal for switching the validity / invalidity of the automatic focusing function. Transmit to the focus control unit 11. As a result, when the automatic focusing function is enabled, the focus control unit 11 outputs a focus control signal based on the detection result of the automatic focusing detection unit 13 to the focus driving unit 12, and the focus driving unit 12 Drive. When the automatic focusing function is disabled, the focus control unit 11 sends a control signal for driving the focus lens unit to the focus driving unit 12 regardless of the detection result of the automatic focusing detection unit 13. Do not send.

  A focus demand 20 shown in FIG. 2 is connected to the lens device 10. A lamp 21 and return switches 22 and 23 are provided on the surface of the focus demand 20, and an operation knob 24 is rotatably connected to a side portion. The lamp 21 displays the completion of power on / off and initialization, and the return switches 22 and 23 switch the image displayed on the viewer and output an operation / non-operation command signal to the VTR.

  FIG. 3 is an operation flowchart in the above configuration. When the focus demand 20 is connected to the lens apparatus 10, the demand function determination unit 14 of the lens apparatus 10 performs function determination as to whether or not the focus demand 20 has an automatic focusing operation function in step S1. If it is the focus demand 20 having the automatic focusing operation function, the process proceeds to step S2 as it is, and processing related to focus is executed.

  Specifically, in step S2, when the automatic focusing of the lens device 10 is invalid, a focus command from the focus demand 20 is sent to the focus control unit 11 of the lens device 10, and the focus moving lens group is set via the focus driving unit 12. To drive. When the automatic focusing is valid, a focusing command signal from the automatic focusing detection unit 13 is transmitted to the focus control unit 11 to drive the focus moving lens group.

  In step S1, if the focus demand 20 does not have an automatic focusing operation function, the process proceeds to step S3, and it is determined whether or not the rotation end of the operation knob 24 of the focus demand 20 is present. Depending on the presence / absence of the rotation end of the operation knob 24, the process with rotation end in step S4 or the process without rotation end in step S5 is executed.

  The operation knob 24 of the focus demand 20 has a rotation end and a rotation speed is defined, and there are a rotation speed that is not defined and a rotation speed is not defined. When there is a rotation end, the entire area of the focus moving lens group corresponds to the rotation position of the operation knob 24. In the case of the lens device 10 having the automatic focusing operation function, when the focus moving lens group is moved by the automatic focusing, the correspondence with the rotation position of the operation knob 24 is lost. Correction processing is required.

  FIG. 4 is a process flowchart of one example in the process with the rotation end in step S4 of FIG. If there is a focus command signal in step S7, the process proceeds to step S8. In step S8, it is determined whether or not the positions of the operation knob 24 and the focus moving lens group are the same. Then, from the point in time when the operation knob 24 and the position of the focus moving lens group coincide with each other, a lens drive command signal is output in step S9. The operation knob 24 is operated, and the focus operation is started when the position of the operation knob 24 coincides with the position of the focus moving lens group.

  FIG. 5 is a flowchart of another process in step S4 of FIG. If there is a focus command signal in step S10, the process proceeds to step S11, the focus moving lens group is moved to the rotational position of the operation knob 24, and then a lens drive command signal is output in step S12. When the operation knob 24 is operated, the focus moving lens group once moves to the position of the operation knob 24, and then the focus operation is started.

  In step S3 of FIG. 3, when the operation knob 24 of the focus demand 20 has no rotation end, there is no positional relationship between the operation knob 24 and the focus moving lens group. Accordingly, in step S5, the focus operation can be executed by adding the command signal of the focus demand 20 to the focus movement lens group even after the focus movement lens group has been moved by automatic focusing.

  Next, the process proceeds to the function assignment process of step S6 in FIG. 3, and an automatic focusing on / off operation of the command signal is assigned to the return switches 22 and 23.

  FIG. 6 is a flowchart of the function assignment process in step S6. In step S <b> 13, the function allocation unit 15 of the lens apparatus 10 reads which function of the autofocus operation the focus demand 20 is assigned to. Here, it is assumed that the return function of the focus demand 20 is set to an automatic focusing on / off operation. Note that the process of step S6 is not limited to the position of the flowchart shown in FIG. 3, and may be anywhere in the entire flow of FIG.

In step S14, it is determined whether or not there is a return command signal in the focus demand 20. If there is a return command signal, the process proceeds to step S15, and the return command signal (first operation signal) is turned on / off command signal (second operation signal ) for automatic focusing. ) And output. In the next step S16, a command signal is output to the focus demand 20 side so that the lamp 21 of the focus demand 20 is turned on when automatic focusing is enabled.

  Thereafter, the process proceeds to step S2 in FIG. 3, and focus control is executed. As described above, according to the present embodiment, even when the focus demand 20 does not have the automatic focusing operation function, the lens device 10 having the automatic focusing operation function can be operated.

  In the first embodiment, the focus demand 20 is taken as an example, but it goes without saying that the same effect can be obtained even in a zoom demand or other demands. In addition, the functions used for function allocation are the return switch and the automatic focusing on / off operation function and display in the first embodiment, but are not limited thereto. For example, when assigning a microphone switch to change the setting of the autofocus detection range, or assigning an extender lens selection switch to autofocus mode switching, this function can be applied to all lens and demand functions. is there.

FIG. 7 is a configuration diagram of the second embodiment, and an automatic focusing operation device 40 is connected to the lens device 30 via a cable 51 and an input / output connector 52. A focus demand (operation means) 55 is connected to the automatic focusing operation device 40 via a connector 53 and a cable 54, or a zoom demand (operation means) 57 is connected via a cable 56.

  The automatic focusing operation device 40 outputs an automatic focusing command signal for executing the automatic focusing operation function. The focus demand 55 outputs a focus operation command signal, but does not have an automatic focusing operation function, and the zoom demand 57 also outputs a zoom operation command signal, but does not have an automatic focusing operation function. The connector 53 connects the cable 54 or 56 and inputs a command signal from the focus demand 55 or the zoom demand 57. The input / output connector 52 outputs a command signal from the focus demand 55 or the zoom demand 57 and a command signal by an automatic focusing operation from the automatic focusing operation device 40 to the lens device 30, and a focusing state signal of the lens device 30. Is output to the automatic focusing operation device 40.

  FIG. 8 is a block circuit configuration diagram in the case where the focus demand 55 is connected to the automatic focusing operation device 40, and the same members as those in FIG. In the lens device 30, a focus control unit 11, a focus drive unit 12, an automatic focus detection unit 13, a zoom control unit 31, a zoom drive unit 32, an aperture control unit 33, and an aperture drive unit 34 are provided.

  In the automatic focusing operation device 40, there is provided a demand function determining unit 14 that is in the lens device 10 in FIG. 1, and the type of demand to be connected, the presence or absence of an automatic focusing operation function, the operation of the focus demand 55 The presence or absence of the rotary end of the knob is determined. The automatic focusing operation device 40 is provided with an automatic focusing command unit 41 for performing an automatic focusing operation, and the automatic focusing command signal is transmitted to the lens device 30 together with the demand operation command signal.

FIG. 9 is a front view of the operation unit of the automatic focusing operation device 40. The joystick 42 on the surface, an automatic focusing mode changeover switch (automatic focusing operation means) 43, an automatic focusing on / off switch (automatic focusing operation). Means) 44, a lamp 45, and an adjustment knob 46 for adjusting the autofocus sensitivity are provided.

  The joystick 42 sets the position of an automatic focusing frame indicating a detection range of automatic focusing, and the automatic focusing frame is displayed on a monitor (not shown) and can be confirmed by an operator. The mode change-over switch 43 is used in combination with the on / off switch 44. In the part time mode, the automatic focusing operation function is turned on only while the on / off switch 44 is being pressed. In the full time mode, the automatic focusing is performed every time the on / off switch 44 is pressed. The on / off state is switched. In the off mode, the automatic focusing operation function remains off regardless of the operation of the on / off switch 44.

  The lamp 45 displays the in-focus state of the lens device 30 and lights up in the in-focus state. The adjustment knob 46 adjusts the sensitivity so that the focus reacts sensitively when the subject moves slightly, and an unnatural screen does not appear.

  The operator manually operates the lens device 30 via the automatic focusing operation device 40 using the focus demand 55 or the zoom demand 57. In addition, the operator performs focus adjustment by the automatic focus operation function via the automatic focus operation device 40. The automatic focusing operation device 40 transmits an automatic focusing command signal and a command signal from the focus demand 55 or the zoom demand 57 to the lens device 30 via the cable 51. Thereby, the lens operation by the focus demand 55 or the zoom demand 57 which does not have an automatic focusing operation function, and the automatic focusing operation by the automatic focusing operation device 40 can be performed.

  10 to 13 are explanatory diagrams of actual operation states. FIG. 10 shows a state in which the automatic focusing operation device 40 is installed in the vicinity of the focus demand 55, and FIG. 11 shows a state in which the automatic focusing operation device 40 is installed in the vicinity of the zoom demand 57. FIG. 12 shows a state where the automatic focusing operation device 40 is installed in the vicinity of the dolly operation unit, and FIG.

In this manner, the present embodiment 2, the focus demand 55 or a zoom demand 57 is not capable of auto-focusing operation function, it is the operation of the lens device 30 having the automatic focusing function through an automatic focusing operation device 40. Further, the automatic focusing operation device 40 can be installed at a place desired by the operator. Furthermore, as in the uniaxial second operation mode, the operation mode of the lens device 30 can be achieved the operation of the automatic focusing function even when different.

  In the second embodiment, the demand function determining unit 14 is disposed in the automatic focusing operation device 40, but may be provided on the lens device 30 side. In addition, when a demand having an automatic focusing operation function is connected, the demand function determination unit 14 determines the type of the automatic focusing operation function, and enables only the automatic focusing operation function that is not in the connected demand. Also good.

  FIG. 14 shows a configuration diagram of the third embodiment in a state in which the focus demand 55 is connected to the automatic focusing operation device 40. The focus demand 55 is provided with a first star mount 61 and a female screw at the center. ing. The automatic focusing operation device 40 is provided with a second star-shaped metal fitting 62, and a hole through which a male screw passes is provided at the center of the star-shaped metal fittings 61, 62. A clamp screw 63 that is a male screw passes through the second star bracket fitting 62 and is screwed into the female screw of the first star bracket fitting 61 so that the focus demand 55 can be attached to and detached from the automatic focusing operation device 40. .

  FIG. 15 shows an example in which the zoom demand 57 is connected to the automatic focusing operation device 40. The first star mount 61 is fixed to the zoom demand 57, and a female screw is provided at the center. The second star-shaped metal fitting 62 is fixed to the automatic focusing operation device 40, and a hole through which a male screw passes is provided in the center of the star-shaped metal fittings 61, 62. The clamp screw 63 passes through the first star mount 61 and is screwed into the female screw of the second star mount 62 to fix the zoom demand 57 and the automatic focusing operation device 40.

  In this manner, since the automatic focusing operation device 40 can be installed closer to the focus demand 55 and the zoom demand 57, an operation related to automatic focusing can be easily performed. Furthermore, since it is possible to always maintain the connection state with the demand, it is not necessary to perform the initial operation of the automatic focusing operation device 40 every time the connection is made.

FIG. 16 is a block circuit configuration diagram of the fourth embodiment. Compared with FIG. 8 of the second embodiment, the automatic focusing operation device 70 has a function switching unit (allocation unit) 71 and a command signal conversion unit (signal conversion unit). 72 has been added. The command signal conversion unit 72 converts the command signal into the function selected by the function switching unit 71 and outputs it to the lens device 30.

FIG. 17 is a block diagram showing a state in which the focus demand 55 is connected to the automatic focusing operation device 70. The return switches 22 and 23 of the focus demand 55 are used to switch the image displayed on the viewer and to send a command signal for turning on / off the VTR. Is output. The automatic focusing operation device 70 is provided with allocation function selection switches (allocation means) 73 and 74.

  The assignment function selection switch 73 assigns the function of the automatic focusing on / off switch 44 of the automatic focusing operation device 70 to the return switch 22 of the focus demand 55. When the assignment function selection switch 73 is selected to be off, the command signal of the return switch 22 of the focus demand 55 is output to the lens device 30 as it is.

  However, when the assignment function selection switch 73 selects the automatic focusing on / off side, the command signal of the return switch 22 is converted into a command signal for the automatic focusing on / off function and output to the lens device 30. The assignment function selection switch 74 assigns the function of the on / off switch 44 of the automatic focusing operation device 70 to the return switch 23.

  FIG. 18 is a flowchart of the allocation function. If there is a command signal for the return switch 22 in step S21, the process proceeds to step S22, and it is determined whether the allocation function selection switch 73 has selected the allocation function for the on / off switch 44. In this case, if the allocation function is selected, an automatic focusing on / off command signal is output in step S23, and if the allocation function is not selected, a command signal for the return switch 22 is output in step S24.

  Next, if there is an instruction signal for the return switch 23 in step S25, the process proceeds to step S26, and it is determined whether or not the allocation function is selected by the allocation function selection switch 74. In this case, if the allocation function is selected, an automatic focusing on / off command signal is output in step S27, and if it is not selected, a command signal for the return switch 23 is output in step S28.

  FIG. 19 is a flowchart when the automatic focusing on / off switch 44 of the automatic focusing operation device 70 is pressed. If there is an autofocus on / off command signal in step S31, the process proceeds to step S32, and it is determined whether the allocation function selection of the return switch 22 has been selected. In this case, if the allocation function is selected, the return switch 22 is output in step S33, and if not selected, the process proceeds to step S34.

  In step S34, it is determined whether the assignment function of the return switch 23 has been selected. In this case, if the allocation function is selected, a command signal for the return switch 23 is output in step S35, and if it is not selected, a command signal for automatic focusing on / off is output in step S36.

  In the fourth embodiment, when both of the return allocation selection return switches 22 and 23 are selected, the return switch 22 is preferentially output. However, the return switch 23 may be prioritized. Both may be output. According to this, since the return switches 22 and 23 of the focus demand 55 can be assigned to the automatic focusing operation function, the high-priority automatic focusing operation function can be operated at a place closer to the hand.

  In the present embodiment, only the automatic focusing on / off function is shown in the allocation function selection, but a plurality of other functions may be provided.

  In addition, the present embodiment shows an example of a lens device (automatic focusing lens, zoom lens), but this embodiment can also be applied to a camera (imaging device) including the lens device as described above. The imaging device may be a combination of an interchangeable lens in which a lens device can be attached to and detached from the camera body and the camera body, or an imaging device in which the camera body and the lens device are integrated.

10, 30 Lens device 13 Automatic focus detection unit (focus state detection means)
14 Demand function discriminating unit (discriminating means)
15 Function allocation unit (allocation means)
20, 55 Focus demand (operating means)
24 Operation knob 40, 70 Automatic focusing operation device 57 Zoom demand (operation means)
73, 74 Allocation function selection switch (allocation means)

Claims (9)

A focus lens unit which moves for focusing, and a focus condition detecting means for detecting an in-focus state, the automatic focusing function for driving the focus lens unit on the basis of the detection result of the focused state detection means A lens device comprising:
A discriminating means for discriminating whether or not the operation unit connected to the lens device has an automatic focusing operation function for operating whether to enable or disable the automatic focusing function;
It said determining means, when the operation unit is determined to not having automatic focusing operation function, to the operating means before Kimisao operation unit has, allocation means for allocating the automatic focus Asemisao work function ,
A lens device comprising: A focus control means for generating a drive signal for driving the focus lens unit;
Said assigning means, based on the first operation signal received from the operation unit, generates a second operation signal for operating the whether to enable or disable the automatic focusing function, the second The lens apparatus according to claim 1, wherein an operation signal is transmitted to the focus control unit. Assigning means for assigning the automatic focusing operation function to the operation means of the operation unit;
A signal conversion means for converting a signal from the operation means assigned the automatic focusing function by the assigning means into a signal for operating whether to enable or disable the automatic focusing function;
The lens apparatus according to claim 1, comprising: The lens device according to any one of claims 1 to 3,
An image sensor for receiving an image of a subject formed by the lens device;
An imaging apparatus comprising: A focusing lens unit that moves during focusing; a focusing state detection unit that detects a focusing state; and an automatic focusing function that drives the focusing lens unit based on a detection result of the focusing state detection unit An automatic focusing operation device connected to the lens device,
A determination unit that determines whether or not the operation unit connected to the automatic focus operation device has an automatic focus operation function for operating whether to enable or disable the automatic focus function;
If the determination means determines that the operation unit does not have the automatic focusing operation function, an assignment means for assigning the automatic focusing function to the operation means included in the operation unit;
An automatic focusing operation device comprising: The assigning unit generates a second operation signal for operating whether to enable or disable the automatic focusing function based on the first operation signal received from the operation unit, and the second operation signal 6. The automatic focusing operation device according to claim 5, wherein a signal is transmitted to the lens device. Assigning means for assigning the automatic focusing operation function to the operation means of the operation unit;
A signal conversion means for converting a signal from the operation means assigned the automatic focusing function by the assigning means into a signal for operating whether to enable or disable the automatic focusing function;
The automatic focusing operation device according to claim 5, further comprising: A focusing lens unit that moves during focusing; a focusing state detection unit that detects a focusing state; and an automatic focusing function that drives the focusing lens unit based on a detection result of the focusing state detection unit An automatic focusing operation device connected to the lens device,
Automatic focusing operation means for operating whether to enable or disable the automatic focusing function;
Determining means for determining whether an operation unit connected to the automatic focusing operation device has an automatic focusing operation function for operating whether to enable or disable the automatic focusing function; ,
An automatic focusing operation device characterized in that, when the determination unit determines that the operation unit does not have the automatic focusing operation function, the automatic focusing operation unit functions. A focusing lens unit that moves during focusing; a focusing state detection unit that detects a focusing state; and an automatic focusing function that drives the focusing lens unit based on a detection result of the focusing state detection unit A lens device;
The automatic focusing operation device according to any one of claims 5 to 8,
An image sensor for receiving an image of a subject formed by the lens device;
An imaging apparatus comprising:

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