JP2023177533A - Control device, lens device, imaging apparatus, imaging system, control method, and program - Google Patents

Abstract

To provide a control device enabling deviation of a point of focus to be reduced when tilt operation is performed.SOLUTION: A control device (117) includes: storage means (117a) which stores, as table data, focus tilt information and focus position change information which change depending on the position of a tilt optical member (102); first acquisition means (117b) which uses the focus tilt information to thereby acquire the amount of movement of the tilt optical member in such a manner that the tilt of a focus plane approaches the tilt of a plane set based on a user's selection; and second acquisition means (117c) which uses the focus position change information to thereby acquire the amount of movement of the focus optical member (104) in such a manner that the shift of the focus plane due to a change in the position of the tilt optical member is reduced.SELECTED DRAWING: Figure 7

Description

The present invention relates to a control device, a lens device, an imaging device, an imaging system, a control method, and a program.

2. Description of the Related Art Conventionally, imaging optical systems equipped with a tilt mechanism (tilt mechanism) have been known in order to perform tilt photography that focuses on an object surface that is tilted with respect to the optical axis direction of the imaging optical system. During tilt photography, in order to focus on a desired object plane, it is necessary to perform a tilt operation and focus adjustment using a tilt mechanism. Patent Document 1 discloses a technique for correcting a composition shift caused by a tilt operation.

JP 2019-91027 Publication

In the technique disclosed in Patent Document 1, during a tilt operation, the focus position that was set before the tilt operation shifts. Therefore, the user needs to perform focus adjustment again after the tilt operation.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a control device that can reduce the shift in focus position during a tilt operation.

A control device according to one aspect of the present invention includes a storage means for storing focus inclination information and focus position change information that change according to the position of a tilt optical member as table data, and a control device that uses the focus inclination information to adjust the focus plane. a first acquisition unit that acquires the amount of movement of the tilt optical member so that the tilt approaches the inclination of a plane set based on a user's selection; and a second acquisition means for acquiring the amount of movement of the focus optical member so as to reduce the shift of the focus plane due to changes in the focusing optical member.

Other objects and features of the invention are illustrated in the following examples.

According to the present invention, it is possible to provide a control device that can reduce the shift in focus position during a tilt operation.

FIG. 1 is a block diagram of an imaging system in each embodiment. FIG. 6 is an explanatory diagram of the driving direction of the tilt lens in each example. FIG. 7 is an explanatory diagram of the inclination of the focus plane due to driving of the tilt lens in each example. FIG. 6 is an explanatory diagram of changes in the focus position due to the inclination of the focus plane in each example. FIG. 6 is an explanatory diagram of selection of a focus plane by a user in each example. 7 is a flowchart illustrating a process of calculating the amount of inclination of a plane by the camera body in each embodiment. 5 is a flowchart illustrating processing for calculating movement amounts of a tilt lens and a focus lens by an interchangeable lens in each example. 3 is a flowchart showing processing by an interchangeable lens in each example. 7 is a flowchart illustrating processing for calculating the amount of movement of the tilt lens and focus lens by the camera body in each embodiment. FIG. 6 is an explanatory diagram of changes in the focus position due to the inclination of the focus plane in each example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same reference numerals are given to the same members, and overlapping explanations will be omitted.

First, with reference to FIG. 1, the configuration of a camera system (imaging system) 10 in Example 1 of the present invention will be described. FIG. 1 is a block diagram of a camera system 10. As shown in FIG. The camera system 10 includes a camera body (imaging device) 200 and an interchangeable lens (lens device) 100 that is detachable from the camera body. Interchangeable lens 100 is attached to camera body 200 via mount 300. However, this embodiment is not limited to this, and can also be applied to an imaging device in which a camera body and a lens device are integrally configured.

The interchangeable lens 100 includes, in order from the object side to the image side, a field lens 101, a tilt lens (tilt optical member) 102, an aperture unit 114, a zoom lens (zoom optical member) 103, and a focus lens (focus optical member) 104. It has an optical system. A lens configuration in which the focus lens 104 is disposed on the rear side when viewed from the object side is called a rear focus lens, and is commonly used in small interchangeable lens cameras, compact digital cameras, and the like.

The tilt lens 102 and the focus lens 104 are held by lens holding frames 105 and 106, respectively, and are configured to be movable in each axial direction by a guide shaft (not shown). The focus lens 104 is driven by a stepping motor 110 in a direction along the optical axis OA (optical axis direction) to perform focus adjustment. The tilt lens 102 is driven by stepping motors 107 and 108 in the X direction and the Y direction in FIG. let The zoom lens 103 is equipped with an encoder for detecting the position, and is capable of detecting a change in photographing magnification (focal length) accompanying a zoom operation. The stepping motors 107, 108, and 110 are motors that move the tilt lens 102 or the focus lens 104 in synchronization with drive pulses, respectively. The stepping motors 107, 108, and 110 constitute lens driving means for moving the tilt lens 102 and the focus lens 104, together with drive circuits 112, 113, and 116, which will be described later.

The microprocessor (control device) 117 performs control according to a lens control command given from the camera body 200 attached to the interchangeable lens 100, and controls the entire operation of the interchangeable lens 100. The microprocessor 117 also transmits various lens information to the camera communication unit (receiving unit) 208 via the lens communication unit (transmission means, reception means) 111, or transmits camera information from the camera communication unit (transmission means) 208. receive.

The microprocessor 117 has a storage means (memory) 117a, a first acquisition means 117b, and a second acquisition means 117c. The storage unit 117a stores focus tilt information and focus position change information that change depending on the position of the tilt lens 102 as table data. The first acquisition unit 117b uses the focus tilt information to acquire the amount of movement of the tilt lens 102 so that the tilt of the focus plane approaches the tilt of the plane set based on the user's selection. The second acquisition unit 117c uses the focus position change information to acquire the amount of movement of the focus lens 104 so as to reduce a shift in the focus plane due to a change in the position of the tilt lens 102. Note that details of the focus tilt information and focus position change information will be described later.

Stepping motors 107, 108, 110 are driven by drive circuits 112, 113, 116, respectively. Drive circuits 112, 113, and 116 drive stepping motors 107, 108, and 110, respectively, in response to drive signals input from microprocessor 117. That is, the tilting operation and focusing operation of the imaging optical system are performed by controlling the stepping motors 107, 108, and 110. In this way, the microprocessor 117 controls the drive circuits 112, 113, and 116 based on the drive signal. The stepping motors 107, 108, and 110 that move the tilt lens 102 and the focus lens 104 may be a DC motor or an ultrasonic motor using a piezoelectric element as a vibrator, but are not limited to these.

The diaphragm unit 114 has an aperture diaphragm that adjusts the amount of light, and is configured with diaphragm blades 114a and 114b. The state (opening state) of the aperture blades 114a and 114b is detected by the position detection sensor 115, and a signal corresponding to the opening state is input to the microprocessor 117. Microprocessor 117 outputs a control signal to drive circuit 119 based on the input signal from position detection sensor 115. Drive circuit 119 drives stepping motor 109 based on a control signal from microprocessor 117. The position detection sensor 115 includes a sensor (detection means) such as a photointerrupter, and detects whether or not the aperture blades 114a, 114b of the aperture unit 114 are at the open position (the position where the aperture diameter is maximum). The attitude detection means 118 is a shake sensor that detects angular shake (camera shake) applied to the camera body 200 (camera system 10) due to hand shake or the like and outputs a camera shake detection signal as an angular velocity signal.

The camera body 200 includes an image sensor 201, an A/D conversion circuit 202, a signal processing circuit 203, a recording section 204, a display section 206, a microprocessor (control device) 207, a camera communication section 208, an attitude detection means 209, and an input means. It has 210. The image sensor 201 is a photoelectric conversion element such as a CMOS sensor or a CCD sensor, and photoelectrically converts a subject image (optical image) formed by the imaging optical system of the interchangeable lens 100 and outputs image data. The input means 210 inputs a desired amount of tilt of the object surface by the user. Note that the input means 210 may be used by the user to input the amount of fall, or by the user to select three points from the object displayed on the display section 206 and input as a plane composed of the three points. Good too. Note that a method for calculating the amount of tilt of the object surface on a plane made up of three points will be described later.

The optical image that has passed through the imaging optical system of the interchangeable lens 100 is converted into an electrical signal (analog signal) by photoelectric conversion in the imaging element 201. The analog signal is then converted into a digital signal by the A/D conversion circuit 202 and input to the signal processing circuit 203. The signal processing circuit 203 performs various types of image processing on the input electrical signals (digital signals) to generate focus information indicating the focused state of the image, detect the distance to the subject, and adjust the exposure state. The generated luminance signal information and the conversion into a recordable data format are performed. Thereafter, the output signal (image signal) from the signal processing circuit 203 is sent to the recording section 204, and the image signal is recorded by the recording section 204. In parallel, the subject image generated by the signal processing circuit 203 is displayed on the display unit 206, allowing the user to check the composition, focus state, etc. of the subject image being photographed in real time.

The microprocessor 207 controls the camera body according to input from a photographing instruction switch or a camera setting related switch (not shown). Further, the microprocessor 207 performs control to instruct the microprocessor 117 to make operation requests or settings for the interchangeable lens 100, such as requests to drive the zoom lens 103, aperture unit 114, or focus lens 104. The attitude detection means 209 is a shake sensor that detects angular shake (camera shake) applied to the camera body 200 due to hand shake or the like and outputs a camera shake detection signal as an angular velocity signal.

Next, tilting of the focal plane due to the operation of the tilt lens 102 will be described with reference to FIG. 2 and FIGS. 3(a) and 3(b). FIG. 2 is an explanatory diagram of the driving direction of the tilt lens 102. FIGS. 3A and 3B are explanatory diagrams of the inclination of the focal plane due to driving of the tilt lens 102.

As shown in FIG. 2, the tilt lens 102 is driven in the X direction and the Y direction by stepping motors 107 and 108. When the tilt lens 102 is driven in the X direction (first movement direction), as shown in FIG. 3(a), the focus plane is in direction (1) (rotation direction around the Y axis, first direction) lean towards. Furthermore, when the tilt lens 102 is driven in the Y direction (second movement direction), the focal plane is moved in direction (2) (direction of tilting toward the object, second direction), as shown in FIG. 3(b). Lean. That is, by driving the tilt lens 102 in the X direction and the Y direction, it is possible to adjust the inclination of the focus plane, and it is possible to realize the inclination of the object plane specified by the user.

In this embodiment, the amount of inclination of the focus plane with respect to the unit movement amount in the X direction and the Y direction changes depending on at least one of the position of the tilt lens 102, the position of the zoom lens 103, and the position of the focus lens 104. Information indicating the relationship between the amount of inclination of the focus plane (focus inclination information) and the positions of the tilt lens 102, zoom lens 103, and focus lens 104 is stored in advance as table data in the internal memory (ROM) of the microprocessor 117. You can leave it there. Alternatively, the amount of inclination of the focus plane may be stored in the internal memory in advance as a polynomial according to the positions of the tilt lens 102, the zoom lens 103, and the focus lens 104, and calculated from the polynomial.

Furthermore, when the focus plane is tilted by driving the tilt lens 102, the position that was in focus before driving the tilt lens 102 (the position of the focus plane) shifts. Figure 4 shows the situation. FIG. 4 is an explanatory diagram of changes in the focus position due to the inclination of the focus plane. In FIG. 4, the thick solid line indicates the focal plane before the tilt lens 102 is driven. When the tilt lens 102 is driven, the focal plane is tilted as shown by the thin solid line in FIG. That is, by driving the tilt lens 102, the center of focus shifts. Therefore, when attempting to tilt the focus plane around the focus position before driving the tilt lens 102, it is necessary to correct the difference D between the thin dotted line and the thin solid line shown in FIG. 4 after driving the tilt lens 102. There is. The difference D changes depending on at least one of the position of the zoom lens 103, the focus lens 104, and the tilt lens 102. Information regarding the difference D (focus position change information) can be stored in advance in the internal memory (ROM) of the microprocessor 117 as table data. Alternatively, the information regarding the difference D may be stored in advance as a polynomial according to the position of the zoom lens 103, the focus lens 104, and the tilt lens 102, and calculated from the polynomial.

Next, with reference to FIGS. 5(a) and 5(b), a method for instructing a plane (focus plane) on which the user wants to focus will be described. FIG. 5A shows an image displayed on the display unit 206. FIG. 5(b) is a diagram of the plane (focus plane) viewed from the X-axis direction. The user selects a plane (focus plane) on which to focus by selecting and instructing three points from among the objects displayed on the display unit 206. The amount of inclination of a plane made up of three points (plane inclination information) can be obtained by detecting the respective distances using the signal processing circuit 203. Note that the details will be described later.

Next, with reference to FIG. 6, a process of calculating the amount of inclination of the focus plane (focus inclination information) by the camera body 200 will be described. FIG. 6 is a flowchart showing the process of calculating the tilt amount by the camera body 200.

First, in step S100, the microprocessor 207 of the camera body 200 determines whether the user has selected a plane (focus plane) on which the user wants to focus. As described above, the user selects a plane by specifying three points on the subject displayed on the display unit 206 of the camera body 200, for example. The information of the selected plane is stored in the internal memory (RAM) of the microprocessor 207. If no plane is selected, step S100 is repeated until a plane is selected. On the other hand, if a plane is selected, the process advances to step S101.

In step S101, the microprocessor 207 calculates the amount of tilt (tilt information) of the selected plane. The plane equation is expressed as aX+bY+cZ+d=0. Therefore, if the coordinates of the three points are known, it is possible to calculate the equation of the plane, that is, the amount of inclination of the plane. As shown in FIG. 5A, the X and Y coordinates of the selected subject can be determined from the position of the image sensor 201 on the XY plane. Furthermore, the Z coordinate of the selected subject can be determined from the defocus amounts of the three points calculated by the signal processing circuit 203.

Subsequently, in step S102, the microprocessor 207 sends a drive command (focus drive command) to the focus lens 104 to focus on the center within the selected plane. This is because the amount of movement of the tilt lens 102 in the interchangeable lens 100 is calculated based on the position information of the focus lens 104. This is also to correct the amount of change in the focus position after moving the tilt lens 102.

Subsequently, in step S103, the microprocessor 207 transmits the plane inclination information calculated in step S101 to the interchangeable lens 100. The tilt information is transmitted as, for example, angle information in which a state in which the tilt lens 102 is located at the center of the optical axis OA is defined as a tilt of 0 degrees. The tilt information includes information on direction (1) in FIG. 3(a) and information on direction (2) in FIG. 3(b).

Next, with reference to FIG. 7, a process for calculating the amount of movement of the tilt lens 102 and the focus lens 104 by the interchangeable lens 100 will be described. FIG. 7 is a flowchart showing a process of calculating the movement amount of the tilt lens 102 and the focus lens 104 by the interchangeable lens 100.

First, in step S200, the microprocessor 117 of the interchangeable lens 100 determines whether a focus drive command has been received from the camera body 200. In this embodiment, the focus drive command is information including a drive amount, a drive direction, and a drive speed, but is not limited to this. For example, the focus drive command may be information including an absolute position and a drive speed. . If the microprocessor 117 has not received a focus drive command, it repeats step S200 until it receives a focus drive command. On the other hand, if a focus drive command is received, the process advances to step S201.

In step S201, the microprocessor 117 drives the focus lens 104 according to the focus drive command (conditions instructed by the focus drive command) received in step S200. Subsequently, in step S202, the microprocessor 117 determines whether the amount of tilt of the plane (tilt information) has been received from the camera body 200. If the microprocessor 117 has not received the amount of tilt, step S202 is repeated until the amount of tilt is received. On the other hand, if the amount of inclination is received, the process advances to step S203.

In step S203, the microprocessor 117 determines (calculates) the drive direction and drive amount (the amount of movement in the X direction and the Y direction) of the tilt lens 102 based on the tilt amount received in step S202. When calculating the drive direction and drive amount of the tilt lens 102, the microprocessor 117 uses focus inclination information regarding the X direction and the Y direction of the tilt lens 102, which is stored in advance in the ROM. The focus tilt information differs depending on at least one of the position of the tilt lens 102, the position of the zoom lens 103, and the position of the focus lens 104.

Next, in step S204, the microprocessor 117 calculates the amount of change in the focus position (focus position change information, focus correction amount) with respect to the movement of the tilt lens 102, based on the amount of movement of the tilt lens 102 in the X and Y directions determined in step S203. ) is determined (calculated). As described above, the amount of change in the focus position is determined by referring to information stored in the ROM in advance. Subsequently, in step S205, the microprocessor 117 drives the tilt lens 102 and the focus lens 104 according to the drive amount and focus correction amount of the tilt lens 102 determined in steps S203 and S204.

By processing the camera body 200 and the interchangeable lens 100 in this manner, it becomes possible to focus on a plane designated by the user. In this embodiment, the interchangeable lens 100 calculates the amount of tilt movement and the amount of change in the focus position, but the invention is not limited to this, and as described later, the camera body 200 calculates the amount of tilt movement and the amount of change in the focus position. The amount may also be calculated.

Next, a process for calculating the amount of tilt movement and the amount of change in focus position by the camera body 200 will be described with reference to FIGS. 8 and 9. FIG. 8 is a flowchart showing processing by the interchangeable lens 100. FIG. 9 is a flowchart showing a process of calculating the movement amount of the tilt lens and focus lens by the camera body 200. When the camera body 200 calculates the amount of tilt movement and the amount of change in the focus position, the microprocessor 207 of the camera body 200 functions as the storage means 117a, the first acquisition means 117b, and the second acquisition means 117c.

First, processing of the interchangeable lens 100 will be described with reference to FIG. First, in step S300, the microprocessor 117 of the interchangeable lens 100 transmits information on the amount of focus inclination of the tilt lens 102 in the X and Y directions and information on change in focus position with respect to the position of the tilt lens 102 to the camera body 200. Subsequently, in step S301, the microprocessor 117 determines whether a focus drive command has been received from the camera body 200. The focus drive command is an instruction that includes the drive amount, drive direction, and drive speed of the focus lens 104, but is not limited thereto. For example, it may be an instruction that includes the absolute position and drive speed of the focus lens 104. . If the microprocessor 117 has not received a focus drive command, it repeats step S301 until it receives a focus drive command. On the other hand, if a focus drive command is received, the process advances to step S302.

In step S302, the microprocessor 117 drives the focus lens 104 according to the focus drive command received in step S301. Subsequently, in step S303, the microprocessor 117 determines whether a tilt drive command has been received from the camera body 200. The tilt drive command is an instruction that includes the drive amount, drive direction, and drive speed of the tilt lens 102, but is not limited thereto. For example, it may be an instruction that includes the absolute position and drive speed of the tilt lens 102. . If the microprocessor 117 has not received a tilt drive command, it repeats step S303 until it receives a tilt drive command. On the other hand, if a tilt drive command is received, the process advances to step S304. In step S304, the microprocessor 117 drives the tilt lens 102 according to the tilt drive command received in step S303.

Next, processing of the camera body 200 will be described with reference to FIG. 9. First, in step S400, the microprocessor 207 of the camera body 200 receives focus tilt information regarding the X and Y directions of the tilt lens 102 and focus position change information according to the position of the tilt lens 102 from the interchangeable lens 100. Subsequently, in step S401, the microprocessor 207 determines whether the user has selected a plane on which he or she wants to focus. Note that the method for selecting the plane is as described above. If the user has not selected a plane, step S401 is repeated until a plane is selected. On the other hand, if a plane is selected, the process advances to step S402.

In step S402, the microprocessor 207 calculates the amount of tilt (tilt information) of the selected plane. Note that the method for calculating the amount of inclination is as described above. Subsequently, in step S403, the microprocessor 207 sends a drive command (focus drive command) to the focus lens 104 to focus on an arbitrary object within the selected plane. This is because in the interchangeable lens 100, the amount of movement of the tilt lens 102 is calculated based on the position information of the focus lens 104. Next, in step S404, the microprocessor 207 calculates the drive amount (and drive direction) of the tilt lens 102 in the X and Y directions based on the tilt amount calculated in step S402 and the information received from the interchangeable lens 100 in step S400. Decide (calculate). Further, after determining the drive amount of the tilt lens 102, the microprocessor 207 determines the focus correction amount of the focus lens 104 (the drive amount and drive direction of the focus lens 104) based on the subject (focusing point) selected in step S403. Determine.

Subsequently, in step S405, the microprocessor 207 transmits a focus drive command to the interchangeable lens 100 based on the drive amount and drive direction of the focus lens 104 determined in step S404. Subsequently, in step S406, the microprocessor 207 transmits a tilt drive command to the interchangeable lens 100 based on the drive amount and drive direction of the tilt lens 102 determined in step S404.

By controlling the tilt lens 102 and the focus lens 104 as described above, it is possible to realize the focus plane specified by the user. Note that in this embodiment, the focus lens 104 is aligned to the center of the plane in advance before calculating the amount of movement of the tilt lens 102, but the present invention is not limited to this.

Here, as shown in FIG. 10, a case will be described in which the tilt lens 102 is moved after focusing at the position indicated by the thick solid line to tilt the focusing surface as indicated by the thin solid line. In this case, after moving the tilt lens 102, the focal plane changes as shown by the dotted line. In the above description, the focus lens 104 is driven to correct the difference Da in FIG. 10, but in this case, it is necessary to drive the difference Db. To calculate the difference Db, there are a method of calculating the distance to the center from the amount of inclination of the plane, and a method of using the result of distance measurement to the central subject. By correcting the difference Da stored in the ROM in the interchangeable lens 100 in advance using the result, it is possible to focus on a plane specified by the user.

Further, in this embodiment, the tilt lens 102 as a tilting optical member is one lens, but it is not limited to this, and the tilting optical member may be composed of a plurality of lenses. In this case, since the amount of inclination of the focus plane changes depending on the relative positional relationship of the plurality of tilting optical members, it is necessary to hold focus inclination information and focus position change information for each tilting optical member. That is, the storage unit 117a stores focus tilt information and focus position change information for each position of a plurality of lenses that constitute the tilt lens 102.

Next, Example 2 of the present invention will be described. After the user selects the focus plane, if the angle of view changes due to camera shake or zoom operation by the user, the focus plane cannot be maintained for the subject specified by the user. In this case, it is necessary to control the tilt lens 102 and focus lens 104 again. For example, if a change in posture is detected by the posture detecting means 209 of the camera body 200 or the posture detecting means 118 of the interchangeable lens 100, the control method described in the first embodiment is re-implemented, so that the subject specified by the user can be photographed. It is possible to keep the focus on.

Further, it is preferable to configure such a configuration that once the tilt lens 102 and the focus lens 104 are controlled, whether or not a zoom change has occurred is detected at a predetermined period. With such a configuration, when a zoom change is detected, the control method described in the first embodiment is executed again, thereby making it possible to continue focusing on the subject specified by the user.

(Other examples)
The present invention provides a system or device with a program that implements one or more of the functions of the above-described embodiments via a network or storage medium, and one or more processors in the computer of the system or device reads and executes the program. This can also be achieved by processing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

According to each embodiment, it is possible to provide a control device, a lens device, an imaging device, an imaging system, a control method, and a program that can reduce the shift in focus position during a tilt operation.

The disclosure of each embodiment includes the following configurations and methods.
(Configuration 1)
a storage means for storing focus tilt information and focus position change information that change according to the position of the tilt optical member as table data;
a first acquisition unit that uses the focus tilt information to acquire a movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of a plane set based on a user's selection;
and a second acquisition unit that uses the focus position change information to acquire a movement amount of the focus optical member so as to reduce a shift in the focus plane due to a change in the position of the tilt optical member. control device.
(Configuration 2)
The focus inclination information includes first information regarding the inclination of the focus surface in the first direction with respect to the movement of the tilt optical member in the first movement direction, and first information regarding the inclination of the focus surface in the first direction with respect to the movement of the tilt optical member in the second movement direction. The control device according to configuration 1, further comprising second information regarding the inclination of the surface in the second direction.
(Configuration 3)
The focus position change information is information regarding a difference between a first focus position when the tilt optical member is at the first position and a second focus position when the tilt optical member is at the second position. The control device according to feature 1 or 2.
(Configuration 4)
4. The control device according to any one of configurations 1 to 3, wherein the focus tilt information and the focus position change information change depending on the position of the focus optical member.
(Configuration 5)
5. The control device according to any one of configurations 1 to 4, wherein the focus tilt information and the focus position change information change depending on the position of the zoom optical member.
(Configuration 6)
Configurations 1 to 5, characterized in that when the posture changes, the first acquisition means and the second acquisition means acquire again the movement amount of the tilt optical member and the movement amount of the focus optical member, respectively. The control device according to any one of.
(Configuration 7)
When the angle of view changes, the first acquisition means and the second acquisition means acquire again the movement amount of the tilt optical member and the movement amount of the focus optical member, respectively. 6. The control device according to any one of 6.
(Configuration 8)
Any one of configurations 1 to 7, wherein the storage means stores the focus tilt information and the focus position change information for each position of a plurality of lenses constituting the tilt optical member. Control device as described.
(Configuration 9)
A lens device that can be attached to and detached from an imaging device,
A control device according to any one of configurations 1 to 8,
A lens device comprising: an imaging optical system including the tilt optical member and the focus optical member.
(Configuration 10)
The first acquisition means includes:
receiving tilt information of the plane from the imaging device;
In configuration 9, the amount of movement of the tilt optical member is obtained using the tilt information of the plane and the focus tilt information so that the tilt of the focus plane approaches the tilt of the plane. The lens device described.
(Configuration 11)
A lens device that can be attached to and detached from an imaging device,
an imaging optical system including a tilt optical member and a focus optical member;
a storage means for storing focus tilt information and focus position change information that change depending on the position of the tilt optical member;
A lens device comprising: transmitting means for transmitting the focus tilt information and the focus position change information to the imaging device.
(Configuration 12)
An imaging device with a detachable lens device,
A control device according to any one of configurations 1 to 8,
An imaging device comprising: an imaging element that photoelectrically converts an optical image formed by an imaging optical system including the tilt optical member and the focus optical member.
(Configuration 13)
further comprising calculation means for calculating inclination information of the plane,
The first acquisition means is configured to use the tilt information of the plane and the focus tilt information to acquire the movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of the plane. 13. The imaging device according to 12.
(Configuration 14)
An imaging device with a detachable lens device,
an imaging element that photoelectrically converts an optical image formed by an imaging optical system including a tilt optical member and a focus optical member;
a calculation means for calculating inclination information of a plane set based on a user's selection;
An imaging device comprising: transmitting means for transmitting the inclination information of the plane to the lens device.
(Configuration 15)
An imaging system comprising an imaging device and a lens device detachable from the imaging device,
The imaging device includes:
a calculation means for calculating inclination information of a plane set based on a user's selection;
transmitting means for transmitting the inclination information of the plane to the lens device,
The lens device includes:
an imaging optical system including a tilt optical member and a focus optical member;
a storage means for storing focus tilt information and focus position change information that change depending on the position of the tilt optical member;
receiving means for receiving the inclination information of the plane from the imaging device;
a first acquisition unit that uses the tilt information of the plane and the focus tilt information to acquire a movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of the plane;
A second acquisition unit that uses the focus position change information to acquire the amount of movement of the focus optical member so as to reduce a shift in the focus plane due to a change in the position of the tilt optical member. imaging system.
(Configuration 16)
An imaging system comprising an imaging device and a lens device detachable from the imaging device,
The lens device includes:
an imaging optical system including a tilt optical member and a focus optical member;
a storage means for storing focus tilt information and focus position change information that change depending on the position of the tilt optical member;
transmitting means for transmitting the focus tilt information and the focus position change information to the imaging device,
The imaging device includes:
a calculation means for calculating inclination information of a plane set based on a user's selection;
receiving means for receiving the focus tilt information and focus position change information from the lens device;
a first acquisition unit that uses the tilt information of the plane and the focus tilt information to acquire a movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of the plane;
A second acquisition unit that uses the focus position change information to acquire a movement amount of the focus optical member so as to reduce a shift in the focus plane due to a change in the position of the tilt optical member. imaging system.
(Method 1)
acquiring focus tilt information and focus position change information that change according to the position of the tilt optical member, which are stored in the storage means as table data;
using the focus inclination information to obtain a movement amount of the tilt optical member so that the inclination of the focus plane approaches the inclination of a plane set based on a user's selection;
A control method comprising the step of using the focus position change information to obtain a movement amount of the focus optical member so as to reduce a shift in the focus plane due to a change in the position of the tilt optical member. .
(Configuration 17)
A program that causes a computer to execute the control method described in Method 1.

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 can be made within the scope of the invention.

102 Tilt lens (tilt optical member)
104 Focus lens (focus optical member)
117 Microprocessor (control device)
117a Storage means 117b First acquisition means 117c Second acquisition means

Claims (18)

a storage means for storing focus tilt information and focus position change information that change according to the position of the tilt optical member as table data;
a first acquisition unit that uses the focus tilt information to acquire a movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of a plane set based on a user's selection;
and a second acquisition unit that uses the focus position change information to acquire a movement amount of the focus optical member so as to reduce a shift in the focus plane due to a change in the position of the tilt optical member. control device. The focus inclination information includes first information regarding the inclination of the focus surface in the first direction with respect to the movement of the tilt optical member in the first movement direction, and first information regarding the inclination of the focus surface in the first direction with respect to the movement of the tilt optical member in the second movement direction. 2. The control device according to claim 1, further comprising second information regarding the inclination of the surface in the second direction. The focus position change information is information regarding a difference between a first focus position when the tilt optical member is at the first position and a second focus position when the tilt optical member is at the second position. The control device according to claim 1, characterized in that: The control device according to claim 1, wherein the focus tilt information and the focus position change information change depending on the position of the focus optical member. The control device according to claim 1, wherein the focus tilt information and the focus position change information change depending on the position of the zoom optical member. 2. When the posture changes, the first acquisition means and the second acquisition means acquire again the movement amount of the tilt optical member and the movement amount of the focus optical member, respectively. Control device as described. 2. When the angle of view changes, the first acquisition means and the second acquisition means acquire again the movement amount of the tilt optical member and the movement amount of the focus optical member, respectively. The control device described in . The control device according to claim 1, wherein the storage means stores the focus tilt information and the focus position change information for each position of a plurality of lenses constituting the tilt optical member. . A lens device that can be attached to and detached from an imaging device,
A control device according to any one of claims 1 to 8,
A lens device comprising: an imaging optical system including the tilt optical member and the focus optical member. The first acquisition means includes:
receiving tilt information of the plane from the imaging device;
10. The amount of movement of the tilt optical member is obtained using the tilt information of the plane and the focus tilt information so that the tilt of the focus plane approaches the tilt of the plane. The lens device described in . A lens device that can be attached to and detached from an imaging device,
an imaging optical system including a tilt optical member and a focus optical member;
a storage means for storing focus tilt information and focus position change information that change depending on the position of the tilt optical member;
A lens device comprising: transmitting means for transmitting the focus tilt information and the focus position change information to the imaging device. An imaging device with a detachable lens device,
A control device according to any one of claims 1 to 8,
An imaging device comprising: an imaging element that photoelectrically converts an optical image formed by an imaging optical system including the tilt optical member and the focus optical member. further comprising calculation means for calculating inclination information of the plane,
The first acquisition means uses the tilt information of the plane and the focus tilt information to acquire the movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of the plane. 13. The imaging device according to item 12. An imaging device with a detachable lens device,
an imaging element that photoelectrically converts an optical image formed by an imaging optical system including a tilt optical member and a focus optical member;
a calculation means for calculating inclination information of a plane set based on a user's selection;
An imaging device comprising: transmitting means for transmitting the inclination information of the plane to the lens device. An imaging system comprising an imaging device and a lens device detachable from the imaging device,
The imaging device includes:
a calculation means for calculating inclination information of a plane set based on a user's selection;
transmitting means for transmitting the inclination information of the plane to the lens device,
The lens device includes:
an imaging optical system including a tilt optical member and a focus optical member;
a storage means for storing focus tilt information and focus position change information that change depending on the position of the tilt optical member;
receiving means for receiving the inclination information of the plane from the imaging device;
a first acquisition unit that uses the tilt information of the plane and the focus tilt information to acquire a movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of the plane;
A second acquisition unit that uses the focus position change information to acquire the amount of movement of the focus optical member so as to reduce a shift in the focus plane due to a change in the position of the tilt optical member. imaging system. An imaging system comprising an imaging device and a lens device detachable from the imaging device,
The lens device includes:
an imaging optical system including a tilt optical member and a focus optical member;
a storage means for storing focus tilt information and focus position change information that change depending on the position of the tilt optical member;
transmitting means for transmitting the focus tilt information and the focus position change information to the imaging device,
The imaging device includes:
a calculation means for calculating inclination information of a plane set based on a user's selection;
receiving means for receiving the focus tilt information and focus position change information from the lens device;
a first acquisition unit that uses the tilt information of the plane and the focus tilt information to acquire a movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of the plane;
A second acquisition unit that uses the focus position change information to acquire the amount of movement of the focus optical member so as to reduce a shift in the focus plane due to a change in the position of the tilt optical member. imaging system. acquiring focus tilt information and focus position change information that change according to the position of the tilt optical member, which are stored in the storage means as table data;
using the focus inclination information to obtain a movement amount of the tilt optical member so that the inclination of the focus plane approaches the inclination of a plane set based on a user's selection;
A control method comprising the step of using the focus position change information to obtain a movement amount of the focus optical member so as to reduce a shift in the focus plane due to a change in the position of the tilt optical member. . A program that causes a computer to execute the control method according to claim 17.