JP2021086118A - Lens device and image capturing device - Google Patents

Abstract

To provide a lens device which is advantageous, for example, in remotely operating a lens group to adjust the flange back.SOLUTION: A lens device provided herein comprises a lens group configured to be movable along an optical axis to adjust the flange back, a drive unit for moving the lens group, an operating unit for operating the drive unit, a communication unit for communicating with an external device, and a control unit configured to control the drive unit according to a first control signal from the operating unit and a second control signal entered from the external device via the communication unit.SELECTED DRAWING: Figure 1

Description

The present invention relates to a lens device and an imaging device.

Patent Document 1 discloses that the initial position of a lens group for flange back adjustment (hereinafter, also referred to as FB adjustment) is stored, and that the position and initial position of the lens group are displayed on the lens device. There is.

Japanese Unexamined Patent Publication No. 11-281866

Patent Document 1 does not disclose a configuration for remotely controlling a lens group for flange back adjustment. An object of the present invention is to provide, for example, a lens device that is advantageous for remote control of a lens group for adjusting a flange back.

The lens device of the present invention for achieving the above object includes a lens group that is movable along the optical axis for adjusting the flange back, a drive unit that moves the lens group, and an operation unit that operates the drive unit. The control of the drive unit is performed based on the communication unit that communicates with the external device, the first control signal from the operation unit, and the second control signal input from the external device via the communication unit. It is characterized by having a control unit for performing the operation.

According to the present invention, for example, it is possible to provide a lens device that is advantageous for remote control of a lens group for adjusting a flange back.

Functional block diagram of the lens device of the first embodiment Flow chart explaining the processing of the CPU of the first embodiment Functional block diagram of the lens device of the second embodiment Flow chart explaining the processing of the CPU of the second embodiment Functional block diagram of the lens device of the third embodiment The figure explaining the movable range of the relay part of the lens apparatus of Example 3. Flow chart explaining the processing of the CPU of the third embodiment Functional block diagram of the lens device of Example 4 Flow chart explaining the processing of the CPU of the fourth embodiment The figure explaining the display at the time of FB adjustment in the camera apparatus (CCU apparatus) of Example 4. The figure explaining the display at the time of macro adjustment in the camera apparatus (CCU apparatus) of Example 4. The figure explaining another display at the time of macro adjustment in the camera apparatus (CCU apparatus) of Example 4.

The present invention will be described in detail with reference to the illustrated examples.

Examples of the lens apparatus of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a functional block diagram of the lens device 1 of this embodiment.

The lens device 1 is mainly composed of a relay unit 11, a position detection unit 12, a drive unit 13, a CPU (control unit) 14, a knob 15, a position detection unit 16, and a reset switch 17.

The relay unit 11 is a relay optical system (lens group) of the lens device 1 and has a configuration that is movable in the optical axis direction. The position detection unit 12 is composed of, for example, a known public potentiometer, detects the position of the relay unit 11, and outputs the detection result to the CPU 14 as the relay position. The drive unit 13 is composed of, for example, a publicly known and public motor, and drives the relay unit 11. The CPU 14 feedback-controls the relay unit 11 via the drive unit 13 based on the knob Ctl (first control signal) and the remote controller Ctl (second control signal), which will be described later, and the relay position.

The knob 15 is a knob for determining the FB position, and the position detection unit 16 detects the position of the knob 15 and outputs the knob Ctrl corresponding to the detected position to the CPU 14. Further, the reset switch 17 is, for example, a publicly known push button type switch, and when the switch is pressed, a reset signal is output. The remote control device (operation device) 2 is a controller for adjusting the FB position of the relay unit 11 by connecting a communication unit (not shown) as an interface as an external device of the lens device 1.

In this specification, it is referred to as flange back adjustment (FB adjustment) to compensate for the deviation of the flange back of the lens device in the state of being mounted on the camera device by adjusting the back focus.

Hereinafter, the internal processing of the CPU 14 will be described with reference to FIGS. 1 and 2.
FIG. 2 is a flowchart illustrating the processing inside the CPU 14.

In step ST01, the control target position of the relay unit 11 (hereinafter referred to as the relay target position) is set to the current position (hereinafter referred to as the current relay position). In the present specification, when the CPU 14 sets (updates) the relay target position, the relay target position is immediately output to the drive unit 13, and the drive unit 13 drives the relay unit 11 toward the relay target position. And.

In step ST02, if the reset is executed (when the reset signal is input), the process proceeds to step ST03, and if the reset is not executed, the process proceeds to step ST04.

In step ST03, the relay target position is set to the relay origin position.
In step ST04, if the remote control Ctl is updated, the process proceeds to step ST05, and if the remote control Ctl is not updated, the process proceeds to step ST06.

In step ST05, the update amount of the remote controller Ctrl (second control signal) is added to the current relay position to set the relay target position.

In step ST06, if the knob Ctl is updated, the process proceeds to step ST07, and if the knob Ctl is not updated, the process returns to step ST02.

In step ST07, the knob Ctl update amount is added to the current relay position to set the relay target position, and the process returns to step ST02. The relay target position is set to the relay origin position. The relay origin position may be set to the FB position initially set in the process of manufacturing the lens, the FB position in the lens design, or the like, and may be updated as necessary.

With the above configuration, even if the relay unit 11 of the lens device 1 is operated from two different operating sources, the knob 15 of the lens device 1 and the remote controller device 2 connected to the lens device 1, the relay target position is set each time. It will be possible to update. The relay unit 11 can be moved by driving the drive unit while updating the relay target position as an update amount each time the operation operated later is performed.

A second embodiment of the lens apparatus of the present invention will be described with reference to FIGS. 3 and 4.
This embodiment is different from the first embodiment in that the lens device 3 having the CPU 34 is used instead of the CPU 14 of the lens device 1.

The CPU 34 inputs a control (camera Ctl, second control signal) from the camera device 4 which is a separate type from the lens device 3 via a communication unit (not shown), and controls the drive of the relay unit 11. It is assumed that the camera device 4 has an operation unit for operating the relay unit 11. An image pickup device having the effect of the present invention can be realized by the lens device of the present invention and a camera device having an image pickup element that receives an image formed by the lens device.

Hereinafter, the processing of the CPU 34 will be described with reference to FIGS. 2, 3, and 4.
Note that steps ST01 to ST05 are the same as the flowchart of FIG.

In step ST06, if the knob Ctl is updated, the process proceeds to step ST07, and if the knob Ctl is not updated, the process proceeds to step ST08.

In step ST07, the knob Ctl (first control signal) update amount is added to the current relay position to set the relay target position, and the process proceeds to step ST08.

In step ST08, if the camera Ctl is updated, the process proceeds to step ST09, and if the camera Ctl is not updated, the process returns to step ST02.

In step ST09, the camera Ctl update amount is added to the current relay position to set the relay target position, and the process returns to step ST02.

With the above configuration, the FB adjustment can be operated not only from the lens device and the remote controller of the lens device but also from the camera device that is separate from the lens device.

A third embodiment of the lens apparatus of the present invention will be described with reference to FIGS. 5, 6 and 7.
This embodiment is different from the second embodiment in that the lens device 5 having the CPU 54 is used instead of the CPU 34 of the lens device 3. Further, the remote control device 2 and the camera device 4 of the second embodiment can output one type of control, but in the third embodiment, the remote control device 6 and the camera capable of outputting the operation of the relay unit 11 as two types of controls. The difference is that the device 7 is used.

In Examples 1 and 2, the knob 15 is described as a knob for determining the FB position, but in this embodiment, FB adjustment and macro photography (hereinafter, also referred to as macro adjustment) are not shown. Including the switch. The knob Ctl, which is a control signal input to the CPU 54, contains information based on the operation amount of the knob 15 (flange back control signal for flange back adjustment, macro control signal for macro photography) and a switch (not shown). Contains information on the type of FB adjustment / macro adjustment selected.

The remote controller 6 has a relay operation knob (not shown) and a switch (not shown) for selecting FB adjustment and macro photography. The remote controller Ctl, which is a control for operating the relay unit 11 input from the remote controller 6 to the CPU 54, includes information on the type of FB adjustment / macro adjustment selected by the switch (not shown).

The camera device 7 is similar to the remote control device 6, and has a relay operation knob (not shown) and a switch (not shown) for selecting FB adjustment and macro photography (hereinafter, also referred to as macro adjustment). The camera Ctl, which is a control for operating the relay unit 11 input from the camera device 7 to the CPU 54, includes information on the type of FB adjustment / macro adjustment selected by the switch (not shown).

Hereinafter, FB adjustment and macro adjustment will be described with reference to FIGS. 6 and 7.
FIG. 6 is a diagram illustrating a movable area of the relay unit 11, an adjustment area (movable area) at the time of FB adjustment, and an adjustment area (movable area) at the time of macro adjustment.

As shown in FIG. 6, the relay unit 11 is moved to the right side in FIG. 6 with reference to the FB adjustment position (the position as a result of the FB adjustment) with respect to the movable area of the relay unit 11 to enable macro adjustment. It is configured. When the macro adjustment is finished and the FB adjustment is returned when the relay unit 11 is located in the adjustment area for the macro adjustment shooting in FIG. 6, the relay unit 11 shall return to the FB adjustment position.

FIG. 7 is a flowchart illustrating the processing of the CPU 54.
In step ST20, the relay target position is set to the current position (current relay position) of the relay unit 11, and the process proceeds to step ST21.

In step ST21, if the FB adjustment is OFF, the process proceeds to step ST25, and if it is not OFF (when it is ON), the process proceeds to step ST22. The determination of ON / OFF of the FB adjustment is turned OFF when the selection of the FB adjustment / macro adjustment of the camera Ctl, the remote controller Ctl, and the knob Ctl, which are the controls input to the CPU 34, is all macro adjustment. If there is even one control that has selected FB adjustment, turn it ON.

In step ST22, the relay target position is set to the current relay position + update amount (FB adjustment operation amount), and the process proceeds to step ST23. Here, the update amount for the FB adjustment operation may be any of the camera Ctl, the remote controller Ctl, and the knob Ctl.

In step ST23, this relay target position is set as the FB adjustment position, and the process returns to step ST21.

In step ST24, if the macro adjustment is OFF, the process proceeds to step ST26, and if it is not OFF (when it is ON), the process proceeds to step ST25.

In step ST25, the relay target position is set to the current relay position + update amount (macro adjustment operation amount), and the process returns to step ST20. Here, the update amount for the macro adjustment operation may be any of the camera Ctl, the remote controller Ctl, and the knob Ctl.
In step ST26, the relay target position is set to the FB adjustment position, and the process returns to step ST20.

With the above configuration, even if different adjustment operations such as FB adjustment and macro adjustment are input to the lens device from multiple operation ends at the same time, the FB adjustment is given priority over the macro adjustment, which makes it smooth. The relay unit can be driven.

A fourth embodiment of the lens apparatus of the present invention will be described with reference to FIGS. 8 to 12.
Compared with the third embodiment, the present embodiment uses a lens device 8 which has a CPU 84 instead of the CPU 54 of the lens device 5 and outputs the current position of the relay unit 11 to the camera as a camera return position. Is different. Further, the difference is that the camera device 9 is used instead of the camera device 7, and the camera device 9 inputs the camera return position output by the lens device 8 and provides a display unit (not shown) for displaying the camera return position. Have. Further, it is different in that it has a controller device 101 (hereinafter, referred to as a CCU device 101) that performs various control operations of the camera device 9.

Further, the camera device 9 outputs the camera return position output by the lens device 8 to the CCU device 101 as the CCU return position. Further, the CCU device 101 outputs CCU_Ctl to the camera device 9 as a signal for controlling the relay unit 11. Further, the camera device 9 outputs the CCU_Ctl as the camera Ctl to the lens device 8.

The imaging system including the lens device 8, the remote controller 6, the camera device 9, and the CCU device 101 in FIG. 8 is referred to as the imaging system 102.

Hereinafter, the processing of the CPU 84 will be described with reference to FIG.
FIG. 9 is a flowchart illustrating the processing of the CPU 84.

In step ST30, the relay target position is set to the current relay position.
In step ST31, if the camera Ctl is OFF (not updated), the process proceeds to step ST33, and if the camera Ctl is not OFF (updated), the process proceeds to step ST32.

In step ST32, the relay target position is set to the current relay position + camera Ctl update, and the process returns to step ST31.

In step ST33, if the knob Ctl is OFF (not updated), the process proceeds to step ST35, and if the knob Ctl is not OFF (updated), the process proceeds to step ST34.

In step ST34, the relay target position is set to the current relay position + knob Ctl update, and the process returns to step ST33.

In step ST35, if the remote controller Ctl is OFF (not updated), the process returns to step ST30, and if the remote controller Ctl is not OFF (updated), the process proceeds to step ST36.

In step ST36, the relay target position is set to the current relay position + remote controller Ctl update, and the process returns to step ST35.

As described above, the relay target position is set with the camera Ctl as the first priority and the knob Ctl and the remote controller Ctl as the second and third priorities.

As described above, in the present embodiment, the operations of the relay unit 11 from the plurality of operation sources are prioritized, and the commands from the operation sources having high priority are prioritized, so that the commands from the plurality of operation sources are given. The relay unit 11 can be driven.

The priority order can be freely set in the CCU device, the camera device, the lens device, the remote control device, and the like. Further, the control for operating the relay unit 11, such as the camera Ctl, the knob Ctl, and the remote controller Ctl, may have both FB adjustment and macro adjustment functions. In this case, as shown in FIG. 7 of Example 3, it is preferable that the FB adjustment and the macro adjustment can be performed separately. That is, it is preferable that the FB adjustment and the macro adjustment are exclusive operations, and when one of the adjustments is executed, the operation of the other adjustment is not accepted. With this setting, it is possible to operate the relay unit 11 related to FB adjustment and macro adjustment from a plurality of operation sources.

Further, the lens device 8 transmits the position of the relay unit 11 to the camera device 9 as the camera return position. Further, the camera device 9 transmits the camera return position to the CCU device 101 as the CCU return position. Further, the display unit of the camera device 9 and the CCU device 101 can display the camera return position and the CCU return position.

With the above configuration, in the camera device 9 and the CCU device 101 located away from the lens device 8, in particular, as shown in FIGS. 8 to 12, the FB position of the relay unit 11 with respect to the movable region of the display unit of the camera device 9 If the camera device 9 and the CCU device 101 are configured so that the macro position can be visually recognized, the operation of the relay unit 11 becomes very easy in the camera device 9 and the CCU device 101.

The display unit may be a monitor separate from the lens device, the camera device, the CCU device, the remote control device, and the like.

The case of driving the relay unit as a macro adjustment for macro photography has been described above, but the same can be applied to the case of driving the relay unit as an adjustment for obtaining a large blur as a video effect. .. Further, although a publicly known potentiometer is used for the position detection unit 12, there is no particular limitation as long as the position can be detected, such as an encoder.

(Other Examples)
The present invention supplies a program that realizes one or more functions of the above-described embodiment to a system or device via a network or storage medium, and one or more processors in the computer of the system or device reads and executes the program. It is also possible to realize the processing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and modifications can be made within the scope of the gist thereof.

1, 3, 5, 8 Lens device 4, 7, 9 Camera device 2, 6 Remote control device

Claims (12)

A group of lenses that can move along the optical axis to adjust the flange back,
A drive unit that moves the lens group and
An operation unit that operates the drive unit and
Communication unit that communicates with external devices
A control unit that controls the drive unit based on the first control signal from the operation unit and the second control signal input from the external device via the communication unit.
A lens device characterized by having. The lens device according to claim 1, wherein the second control signal includes a plurality of second control signals output by a plurality of operating sources. The second control signal according to claim 1 or 2, wherein the second control signal includes a flange back control signal for the adjustment and a macro control signal for moving the lens group to perform macro photography. The lens device described. The lens device according to any one of claims 1 to 3, wherein the control unit performs the control based on the priority with respect to the first control signal and the second control signal. The lens device according to claim 3, wherein the control unit performs the control by giving priority to the flange back control signal over the macro control signal. The lens device according to any one of claims 1 to 5, wherein the control unit performs the control with priority given to a control signal input later. It has a detection unit that detects the position of the lens group.
The control unit transmits information about the position to the external device via the communication unit.
The lens device according to any one of claims 1 to 6, wherein the lens device is characterized by the above. The control unit according to any one of claims 1 to 7, wherein the control unit transmits information regarding the position of the lens group that has been adjusted to the external device via the communication unit. The lens device described. The lens device according to any one of claims 1 to 8, wherein the external device includes an operation unit for operating the drive unit. The lens device according to any one of claims 1 to 9, wherein the external device includes an image pickup element that captures an image formed by the lens device. The lens device according to any one of claims 1 to 9.
An image sensor that captures the image formed by the lens device,
An imaging device characterized by having. The imaging device according to claim 11, wherein the external device includes the image pickup element.

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