Control device, lens device, imaging apparatus, imaging system, control method, and program

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

[Technical Field]

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

[0002] Conventionally, imaging optical systems equipped with a tilt mechanism (tilt mechanism) for performing tilt photography to focus on an object surface tilted with respect to the optical axis direction of the imaging optical system have been known. During tilt photography, tilt operation (tilt operation) and focus adjustment using the tilt mechanism are required to focus on a desired object surface. Patent Document 1 discloses a technology for correcting a composition shift caused by tilt operation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-91027 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology disclosed in Patent Document 1, when a tilt operation is performed, the focus position that was set before the tilt operation shifts, so the user needs to adjust the focus again after the tilt operation.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a control device that can reduce deviation of the focus position during tilt operation. [Means for solving the problem]

[0006] A control device according to one aspect of the present invention includes a storage means for storing, as table data, focus tilt information and focus position change information that change depending on the position of a tilt optical element; a first acquisition means for using the focus tilt information to acquire the amount of movement of the tilt optical element so as to bring the tilt of the focus plane closer to the tilt of a plane set based on a user's selection; and a second acquisition means for using the focus position change information to acquire the amount of movement of the focus optical element so as to reduce the shift in the focus plane due to the change in the position of the tilt optical element.

[0007] Other objects and features of the present invention are illustrated in the following examples. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a control device that can reduce deviation of the focus position during a tilt operation. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a block diagram of an imaging system in each embodiment. [Figure 2] 5A and 5B are explanatory diagrams of the driving direction of the tilt lens in each embodiment. [Figure 3] 5A and 5B are explanatory diagrams of the tilt of the focal plane caused by driving the tilt lens in each embodiment. [Figure 4] 5A and 5B are explanatory diagrams illustrating changes in the focal position due to the inclination of the focal plane in each embodiment. [Figure 5] 10A and 10B are explanatory diagrams illustrating selection of a focal plane by a user in each embodiment. [Figure 6] 10 is a flowchart showing a process for calculating the amount of tilt of a plane by the camera body in each embodiment. [Figure 7] 10 is a flowchart showing a process for calculating the movement amounts of a tilt lens and a focus lens in an interchangeable lens in each embodiment. [Figure 8] 10 is a flowchart showing processing by an interchangeable lens in each embodiment. [Figure 9]10 is a flowchart showing a process for calculating the movement amounts of the tilt lens and the focus lens by the camera body in each embodiment. [Figure 10] 5A and 5B are explanatory diagrams illustrating changes in the focal position due to the inclination of the focal plane in each embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are designated by the same reference numerals, and redundant explanations will be omitted. [Example]

[0011] First, the configuration of a camera system (imaging system) 10 according to a first embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a block diagram of the camera system 10. The camera system 10 is configured to include a camera body (imaging device) 200 and an interchangeable lens (lens device) 100 that is detachable from the camera body. The interchangeable lens 100 is attached to the camera body 200 via a mount 300. However, this embodiment is not limited to this, and can also be applied to an imaging device in which the camera body and the lens device are integrally configured.

[0012] Interchangeable lens 100 has an imaging optical system that 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. A lens configuration in which the focus lens 104 is arranged on the rear side as viewed from the object side like this is called a rear focus lens, and is commonly used in small interchangeable lens cameras, compact digital cameras, and the like.

[0013] The tilt lens 102 and focus lens 104 are held by lens holding frames 105 and 106, respectively, and are configured to be movable in their axial directions by guide shafts (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 and Y directions in FIG. 1, thereby generating a tilt effect that tilts the optical axis OA of the imaging optical system with respect to the imaging surface of the imaging element 201. The zoom lens 103 is equipped with an encoder for detecting its position, and is capable of detecting changes in imaging magnification (focal length) associated with zoom operations. The stepping motors 107, 108, and 110 are motors that move the tilt lens 102 or the focus lens 104, respectively, in synchronization with drive pulses. The stepping motors 107, 108, and 110, together with drive circuits 112, 113, and 116 (to be described later), constitute a lens drive means for moving the tilt lens 102 and the focus lens 104.

[0014] The microprocessor (control device) 117, which is attached to the interchangeable lens 100, performs control in accordance with lens control commands given from the camera body 200, and is responsible for controlling the overall operation of the interchangeable lens 100. The microprocessor 117 also transmits various types of lens information to a camera communication unit (receiving means) 208 via a lens communication unit (transmitting means, receiving means) 111, or receives camera information from the camera communication unit (transmitting means) 208.

[0015] The microprocessor 117 has a storage unit (memory) 117a, a first acquisition unit 117b, and a second acquisition unit 117c. The storage unit 117a stores, as table data, focus tilt information and focus position change information that change depending on the position of the tilt lens 102. 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 a plane set based on a user 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 the shift in the focus plane due to changes in the position of the tilt lens 102. Details of the focus tilt information and the focus position change information will be described later.

[0016] The stepping motors 107, 108, and 110 are driven by drive circuits 112, 113, and 116, respectively. The drive circuits 112, 113, and 116 drive the stepping motors 107, 108, and 110, respectively, in response to drive signals input from a microprocessor 117. That is, tilting and focusing of the imaging optical system are performed by controlling the stepping motors 107, 108, and 110. In this manner, the microprocessor 117 controls the drive circuits 112, 113, and 116 based on the drive signals. The stepping motors 107, 108, and 110 that move the tilt lens 102 and the focus lens 104 are, but are not limited to, DC motors or ultrasonic motors that use piezoelectric elements as vibrators.

[0017] The aperture unit 114 has an aperture diaphragm that adjusts the amount of light and is composed of aperture blades 114a and 114b. The state (open state) of the aperture blades 114a and 114b is detected by a position detection sensor 115, and a signal corresponding to the open state is input to a microprocessor 117. The microprocessor 117 outputs a control signal to a drive circuit 119 based on the input signal from the position detection sensor 115. The drive circuit 119 drives the stepping motor 109 based on the control signal from the microprocessor 117. The position detection sensor 115 is composed of a sensor (detection means) such as a photointerrupter, and detects whether the aperture blades 114a and 114b of the aperture unit 114 are in 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.

[0018] The camera body 200 has an image sensor 201, an A / D conversion circuit 202, a signal processing circuit 203, a recording unit 204, a display unit 206, a microprocessor (controller) 207, a camera communication unit 208, an attitude detection unit 209, and an input unit 210. The image sensor 201 is a photoelectric conversion element such as a CMOS sensor or a CCD sensor, and performs photoelectric conversion on an object image (optical image) formed by the imaging optical system of the interchangeable lens 100 to output image data. The input unit 210 receives a desired object tilt amount from a user. The user may input the tilt amount via the input unit 210, or the user may select three points from the object displayed on the display unit 206 and input the amount as a plane formed by the three points. A method for calculating the object tilt amount for a plane formed by three points will be described later.

[0019] An optical image that passes through the imaging optical system of the interchangeable lens 100 is converted into an electrical signal (analog signal) by photoelectric conversion in the image sensor 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 image processing on the input electrical signal (digital signal) to generate focus information that indicates the focus state of the image, detect the distance to the subject, generate luminance signal information that indicates the exposure state, and convert the data into a recordable data format. An output signal (image signal) from the signal processing circuit 203 is then sent to the recording unit 204, and the image signal is recorded by the recording unit 204. In parallel, the subject image generated by the signal processing circuit 203 is displayed on the display unit 206, allowing the composition, focus state, etc. of the subject image being captured to be confirmed in real time.

[0020] The microprocessor 207 controls the camera body in response to input from a shooting instruction switch or camera setting related switches (not shown). The microprocessor 207 also controls the microprocessor 117 to issue operation requests or settings to the interchangeable lens 100, such as requests to drive the zoom lens 103, the aperture unit 114, or the 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.

[0021] Next, with reference to Fig. 2 and Fig. 3(a) and (b), tilting of the focal plane due to the operation of the tilt lens 102 will be described. Fig. 2 is an explanatory diagram of the driving direction of the tilt lens 102. Fig. 3(a) and (b) are explanatory diagrams of the tilting of the focal plane due to the driving of the tilt lens 102.

[0022] As shown in FIG. 2, tilt lens 102 is driven in the X and Y directions by stepping motors 107 and 108. When tilt lens 102 is driven in the X direction (first movement direction), the focal plane tilts in direction (1) (a rotational direction about the Y axis, a first direction) as shown in FIG. 3(a). When tilt lens 102 is driven in the Y direction (a second movement direction), the focal plane tilts in direction (2) (a direction tilting toward the object, a second direction) as shown in FIG. 3(b). In other words, by driving tilt lens 102 in the X and Y directions, it is possible to adjust the tilt of the focal plane, and it is possible to achieve the tilt of the object plane specified by the user.

[0023] In this embodiment, the tilt amount of the focal plane relative to a unit movement amount in the X and Y directions varies depending on at least one of the positions of the tilt lens 102, the zoom lens 103, and the focus lens 104. Information indicating the relationship between the tilt amount of the focal plane (focus tilt information) and the positions of the tilt lens 102, the zoom lens 103, and the focus lens 104 can be stored in advance as table data in the internal memory (ROM) of the microprocessor 117. Alternatively, the tilt amount of the focal plane may be stored in advance in the internal memory as a polynomial corresponding to the positions of the tilt lens 102, the zoom lens 103, and the focus lens 104, and calculated from the polynomial.

[0024] Furthermore, if the focal plane tilts due to driving the tilt lens 102, the position where the image was in focus before driving the tilt lens 102 (the focal plane position) will shift. This is shown in FIG. 4. FIG. 4 is an explanatory diagram of the change in focal position due to the tilt of the focal plane. In FIG. 4, the thick solid line indicates the focal plane before driving the tilt lens 102. When the tilt lens 102 is driven, the focal plane tilts as shown by the thin solid line in FIG. 4. In other words, driving the tilt lens 102 shifts the center of focus. Therefore, if you want to tilt the focal plane around the focal position before driving the tilt lens 102, you need 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. The difference D changes depending on at least one of the positions of the zoom lens 103, the focus lens 104, and the tilt lens 102. Information about the difference D (focus position change information) can be stored in advance as table data in the internal memory (ROM) of the microprocessor 117. Alternatively, information about the difference D may be stored in advance as a polynomial corresponding to the positions of the zoom lens 103, the focus lens 104, and the tilt lens 102, and calculated from the polynomial.

[0025] Next, a method for the user to specify a plane (focus plane) on which the user wishes to focus will be described with reference to FIGS. 5(a) and 5(b). FIG. 5(a) is an image displayed on the display unit 206. FIG. 5(b) is a view of the plane (focus plane) as viewed from the X-axis direction. The user selects the plane (focus plane) on which the user wishes to focus by selecting and specifying three points from the subject displayed on the display unit 206. The amount of tilt of the plane made up of three points (plane tilt information) can be determined by detecting the respective distances using the signal processing circuit 203. This will be described in detail later.

[0026] Next, the calculation process of the tilt amount of the focus plane (focus tilt information) performed by camera body 200 will be described with reference to Fig. 6. Fig. 6 is a flowchart showing the calculation process of the tilt amount performed by camera body 200.

[0027] First, in step S100, the microprocessor 207 of the camera body 200 determines whether or not the user has selected a plane (focus plane) on which to focus. As described above, the user selects a plane by, for example, designating three points on a subject displayed on the display unit 206 of the camera body 200. Information on the selected plane is stored in the internal memory (RAM) of the microprocessor 207. If a plane has not been selected, step S100 is repeated until a plane is selected. On the other hand, if a plane has been selected, the process proceeds to step S101.

[0028] In step S101, the microprocessor 207 calculates the tilt amount (tilt information) of the selected plane. The equation of the plane 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, i.e., the tilt amount of the plane. As shown in FIG. 5(a), the X and Y coordinates of the selected object can be determined from the position of the XY plane of the image sensor 201. Furthermore, the Z coordinate of the selected object can be determined from the defocus amounts of the three points calculated by the signal processing circuit 203.

[0029] Next, in step S102, the microprocessor 207 sends a drive command (focus drive command) to the focus lens 104 to focus on the center of the selected plane. This is because the amount of movement of the tilt lens 102 in the interchangeable lens 100 is calculated based on position information of the focus lens 104. This is also to correct the amount of change in the focus position after the tilt lens 102 is moved.

[0030] Next, in step S103, the microprocessor 207 transmits tilt information of the plane calculated in step S101 to the interchangeable lens 100. The tilt information is transmitted, for example, as angle information in which the tilt angle is 0 degrees when the tilt lens 102 is positioned at the center of the optical axis OA. The tilt information includes information on direction (1) in FIG. 3(a) and information on direction (2) in FIG. 3(b).

[0031] Next, a process for calculating the movement amounts of the tilt lens 102 and the focus lens 104 performed by the interchangeable lens 100 will be described with reference to Fig. 7. Fig. 7 is a flowchart showing a process for calculating the movement amounts of the tilt lens 102 and the focus lens 104 performed by the interchangeable lens 100.

[0032] First, in step S200, the microprocessor 117 of the interchangeable lens 100 determines whether or not 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 and may be information including an absolute position and a drive speed, for example. If the microprocessor 117 has not received a focus drive command, step S200 is repeated until a focus drive command is received. On the other hand, if a focus drive command has been received, the process proceeds to step S201.

[0033] In step S201, microprocessor 117 drives focus lens 104 in accordance with the focus drive command received in step S200 (conditions specified in the focus drive command). Next, in step S202, microprocessor 117 determines whether or not it has received the amount of tilt of the plane (tilt information) from camera body 200. If microprocessor 117 has not received the amount of tilt, it repeats step S202 until it receives the amount of tilt. On the other hand, if it has received the amount of tilt, it proceeds to step S203.

[0034] In step S203, the microprocessor 117 determines (calculates) the drive direction and drive amount (amount of movement in the X and Y directions) 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 tilt information related to the X and Y directions of the tilt lens 102 that is stored in advance in 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.

[0035] Next, in step S204, the microprocessor 117 determines (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. As described above, the amount of change in the focus position is determined by referencing information previously stored in the ROM. Next, in step S205, the microprocessor 117 drives the tilt lens 102 and the focus lens 104 according to the amount of drive of the tilt lens 102 and the amount of focus correction determined in steps S203 and S204.

[0036] In this way, it becomes possible to focus on the plane designated by the user by performing processing on the camera body 200 and the interchangeable lens 100. In this embodiment, the interchangeable lens 100 calculates the amount of tilt movement and the amount of change in the focus position, but this is not limited to this, and as will be described later, the camera body 200 may calculate the amount of tilt movement and the amount of change in the focus position.

[0037] Next, the calculation process of the tilt movement amount and the amount of change in focus position by the camera body 200 will be described with reference to Figures 8 and 9. Figure 8 is a flowchart showing the process by the interchangeable lens 100. Figure 9 is a flowchart showing the calculation process of the movement amount of the tilt lens and the focus lens by the camera body 200. When the camera body 200 calculates the tilt movement amount and the amount of change in focus position, the microprocessor 207 of the camera body 200 has the functions of storage means 117a, first acquisition means 117b, and second acquisition means 117c.

[0038] First, the processing of the interchangeable lens 100 will be described with reference to FIG. 8. First, in step S300, the microprocessor 117 of the interchangeable lens 100 transmits to the camera body 200 focus tilt amount information in the X and Y directions of the tilt lens 102 and focus position change information relative to the position of the tilt lens 102. Next, in step S301, the microprocessor 117 determines whether or not a focus drive command has been received from the camera body 200. The focus drive command is an instruction including the drive amount, drive direction, and drive speed of the focus lens 104, but is not limited thereto. For example, the instruction may include 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 it has received a focus drive command, it proceeds to step S302.

[0039] In step S302, the microprocessor 117 drives the focus lens 104 in accordance with the focus drive command received in step S301. Subsequently, in step S303, the microprocessor 117 determines whether or not a tilt drive command has been received from the camera body 200. The tilt drive command is an instruction including the drive amount, drive direction, and drive speed of the tilt lens 102, but is not limited thereto. For example, the instruction may include the absolute position and drive speed of the tilt lens 102. If the microprocessor 117 has not received a tilt drive command, step S303 is repeated until a tilt drive command is received. On the other hand, if a tilt drive command has been received, the process proceeds to step S304. In step S304, the microprocessor 117 drives the tilt lens 102 in accordance with the tilt drive command received in step S303.

[0040] Next, processing by the camera body 200 will be described with reference to Figure 9. First, in step S400, the microprocessor 207 of the camera body 200 receives from the interchangeable lens 100 focus tilt information in the X and Y directions of the tilt lens 102 and focus position change information corresponding to the position of the tilt lens 102. Next, in step S401, the microprocessor 207 determines whether or not the user has selected a plane on which to focus. The method for selecting a 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 has been selected, the process proceeds to step S402.

[0041] In step S402, the microprocessor 207 calculates the tilt amount (tilt information) of the selected plane. The method for calculating the tilt amount is as described above. Subsequently, in step S403, the microprocessor 207 transmits a drive command (focus drive command) to the focus lens 104 so as to focus on an arbitrary subject within the selected plane. This is for calculating the movement amount of the tilt lens 102 in the interchangeable lens 100 based on the position information of the focus lens 104. Subsequently, in step S404, the microprocessor 207 determines (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. Furthermore, after determining the drive amount of the tilt lens 102, the microprocessor 207 determines the focus correction amount of the focus lens 104 (drive amount and drive direction of the focus lens 104) based on the subject (range measurement point) selected in step S403.

[0042] Next, 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. Next, 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.

[0043] As described above, it is possible to realize the focal plane specified by the user by controlling the tilt lens 102 and the focus lens 104. In this embodiment, the focus lens 104 is aligned with the center of the plane before calculating the amount of movement of the tilt lens 102, but this is not limiting.

[0044] Here, as shown in FIG. 10, a case will be described in which, after focusing at the position indicated by the thick solid line, the tilt lens 102 is moved to tilt the focal plane as indicated by the thin solid line. In this case, after moving the tilt lens 102, the focal plane changes as indicated 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 methods such as calculating the distance to the center from the tilt amount of the plane, or using the results of distance measurement of the central subject. Using the result, it is possible to correct the difference Da, which is stored in advance in the ROM within the interchangeable lens 100, to focus on a plane specified by the user.

[0045] In this embodiment, the tilt lens 102 serving as the tilt optical member is a single lens, but this is not limited thereto and the tilt optical member may be composed of multiple lenses. In this case, since the amount of tilt of the focal plane changes depending on the relative positional relationship of the multiple tilt optical members, it is necessary to store focus tilt information and focus position change information for each tilt optical member. In other words, the storage unit 117a stores focus tilt information and focus position change information for each position of the multiple lenses constituting the tilt lens 102. [Example]

[0046] Next, a second embodiment of the present invention will be described. After a user selects a focal plane, if the angle of view changes due to camera shake or a zoom operation by the user, it becomes impossible to maintain the focal plane on the subject designated by the user. In this case, it is necessary to control the tilt lens 102 and the focus lens 104 again. For example, if a change in posture is detected by the posture detection means 209 of the camera body 200 or the posture detection means 118 of the interchangeable lens 100, it is possible to continue focusing on the subject designated by the user by performing the control method described in the first embodiment again.

[0047] It is also preferable to configure the system to detect at a predetermined interval whether a zoom change has occurred after controlling the tilt lens 102 and the focus lens 104. With this configuration, if a zoom change is detected, the control method described in the first embodiment can be performed again, thereby making it possible to keep the subject in focus as specified by the user.

[0048] (Other Examples) The present invention can also be realized by supplying a program that realizes one or more functions of the above-described embodiments to a system or device via a network or a storage medium, and having one or more processors in the computer of the system or device read and execute the program. It can also be realized by a circuit (e.g., ASIC) that realizes one or more functions.

[0049] 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 are capable of reducing deviation of the focus position during a tilt operation.

[0050] The disclosure of each embodiment includes the following configurations and methods. (Configuration 1) a storage means for storing, as table data, focus tilt information and focus position change information that change according to the position of the tilt optical member; a first acquisition means for acquiring a movement amount of the tilt optical member using the focus tilt information so as to bring the tilt of the focus plane closer to the tilt of a plane set based on a user selection; and a second acquisition means for acquiring a movement amount of the focus optical element using the focus position change information so as to reduce a shift in the focus plane due to a change in the position of the tilt optical element. (Configuration 2) The control device described in configuration 1, characterized in that the focus tilt information includes first information regarding the tilt of the focus plane in a first direction relative to movement of the tilt optical element in a first movement direction, and second information regarding the tilt of the focus plane in a second direction relative to movement of the tilt optical element in a second movement direction. (Configuration 3) The control device according to configuration 1 or 2, wherein the focus position change information is information regarding a difference between a first focus position when the tilt optical element is in a first position and a second focus position when the tilt optical element is in a second position. (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 according to 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 according to the position of a zoom optical member. (Configuration 6) 6. The control device according to any one of configurations 1 to 5, wherein when the posture changes, the first acquisition means and the second acquisition means reacquire the movement amount of the tilt optical element and the movement amount of the focus optical element, respectively. (Configuration 7) 7. The control device according to any one of configurations 1 to 6, wherein when the angle of view changes, the first acquisition means and the second acquisition means reacquire the movement amount of the tilt optical member and the movement amount of the focus optical member, respectively. (Configuration 8) The control device according to 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. (Configuration 9) A lens device that is detachable from an imaging device, A control device according to any one of configurations 1 to 8; an imaging optical system including the tilt optical member and the focus optical member. (Configuration 10) The first acquisition means receiving tilt information of the plane from the imaging device; The lens device described in configuration 9, characterized in that the tilt information of the plane and the focus tilt information are used to acquire the movement amount of the tilt optical member so that the tilt of the focus plane approaches the tilt of the plane. (Configuration 11) A lens device that is detachable from an imaging device, an imaging optical system including a tilt optical element and a focus optical element; a storage means for storing information on the focus tilt and the focus position change that change according to the position of the tilt optical member; a transmitting unit that transmits 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 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 a calculation means for calculating tilt information of the plane, The imaging device according to configuration 12, wherein the first acquisition means acquires the movement amount of the tilt optical member using the tilt information of the plane and the focus tilt information so as to bring the tilt of the focus plane closer to the tilt of the plane. (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 tilt information of the plane set based on a user's selection; a transmitting unit that transmits the tilt information of the plane to the lens device. (Configuration 15) An imaging system having an imaging device and a lens device detachable from the imaging device, The imaging device is a calculation means for calculating tilt information of the plane set based on a user's selection; a transmitting means for transmitting the tilt information of the plane to the lens device, The lens device an imaging optical system including a tilt optical element and a focus optical element; a storage means for storing information on the focus tilt and the focus position change that change according to the position of the tilt optical member; a receiving means for receiving the tilt information of the plane from the imaging device; a first acquisition means for acquiring a movement amount of the tilt optical member by using the tilt information of the plane and the focus tilt information so as to make the tilt of the focus plane closer to the tilt of the plane; and a second acquisition means for acquiring a movement amount of the focus optical element using the focus position change information so as to reduce a shift in the focus plane due to a change in the position of the tilt optical element. (Configuration 16) An imaging system having an imaging device and a lens device detachable from the imaging device, The lens device an imaging optical system including a tilt optical element and a focus optical element; a storage means for storing information on the focus tilt and the focus position change that change according to the position of the tilt optical member; a transmitting means for transmitting the focus tilt information and the focus position change information to the imaging device, The imaging device is a calculation means for calculating tilt information of the plane set based on a user's selection; a receiving means for receiving the focus tilt information and the focus position change information from the lens device; a first acquisition means for acquiring a movement amount of the tilt optical member by using the tilt information of the plane and the focus tilt information so as to make the tilt of the focus plane closer to the tilt of the plane; and a second acquisition means for acquiring a movement amount of the focus optical element using the focus position change information so as to reduce a shift in the focus plane due to a change in the position of the tilt optical element. (Method 1) acquiring information on the focus tilt and the focus position change that change according to the position of the tilt optical member, the information being stored in a storage means as table data; using 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 selection; and using the focus position change information, acquiring a movement amount of the focus optical element so as to reduce a shift in the focus plane due to a change in the position of the tilt optical element. (Configuration 17) A program that causes a computer to execute the control method described in Method 1.

[0051] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention. [Explanation of symbols]

[0052] 102 Tilt lens (tilt optical component) 104 Focus lens (focus optical component) 117 Microprocessor (controller) 117a Storage means 117b First means of acquisition 117c Second means of acquisition

Claims

Claims 1. A control device for controlling an optical member using first information indicating a focus tilt that changes according to the position of a tilt optical member that generates a tilt effect of tilting the optical axis of an optical system with respect to an imaging surface, and second information indicating a change amount of the focus position with respect to the movement of the tilt optical member, a first acquisition means for acquiring a first movement amount in a direction including a direction orthogonal to the optical axis when tilting the optical axis of the tilt optical member with respect to the imaging surface, using the first information; a second acquisition means for acquiring a second movement amount in a direction including the optical axis during the focus adjustment of a focus optical member for performing focus adjustment, using the second information, wherein the control device is characterized by comprising the first acquisition means and the second acquisition means. Claims 2. The control device according to claim 1, further comprising storage means for storing table data indicating the relationship between the first information and the second information. Claims 3. The first information includes first information regarding the tilt of the focus plane in a first direction with respect to the movement of the tilt optical member in a first movement direction, and second information regarding the tilt of the focus plane in a second direction with respect to the movement of the tilt optical member in a second movement direction. The control device according to claim 1 is characterized by this. Claims 4. The second information is information regarding the difference between a first focus position when the tilt optical member is in a first position and a second focus position when the tilt optical member is in a second position. The control device according to claim 1 is characterized by this. Claims 5. The first information and the second information change according to the position of the focus optical member. The control device according to claim 1 is characterized by this. Claims 6. The first information and the second information change according to the position of the zoom optical member. The control device according to claim 1 is characterized by this. Claims 7. When the posture changes, the first acquisition means acquires the first movement amount. The control device according to claim 1 is characterized by this. Claims 8. When the angle of view changes, the first acquisition means acquires the first movement amount again. The control device according to claim 1 is characterized by this. Claims 9. The control device according to claim 1, wherein the first information and the second information are stored for each position of each of a plurality of lenses constituting the tilt optical member. Claims 10. A lens device detachable from an imaging device, comprising the control device according to any one of claims 1 to 9, A lens device, comprising: an imaging optical system including the tilt optical member and the focus optical member.

11. The first acquisition means receives information regarding a first inclination based on a user's selection from the imaging device, and acquires the first movement amount so as to bring the inclination of the in-focus plane closer to the first inclination by using the information regarding the first inclination and the first information. The lens device according to claim 10.

12. A lens device detachable from an imaging device, an imaging optical system including a tilt optical member that generates a tilt effect of tilting an optical axis of the optical system with respect to an imaging surface, and a focus optical member for performing focus adjustment, control means for controlling the optical member by using first information indicating a focus inclination that changes according to the position of the tilt optical member, and second information indicating a change amount of the focus position with respect to the movement of the tilt optical member, and transmission means for transmitting the first information and the second information to the imaging device. The lens device is characterized by having the above.

13. An imaging device to which a lens device is detachable, a control device according to any one of claims 1 to 9, and 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. The imaging device is characterized by having the above.

14. Further comprising calculation means for calculating information regarding a first inclination based on a user's selection, wherein the first acquisition means acquires the first movement amount so as to bring the inclination of the in-focus plane closer to the first inclination by using the information regarding the first inclination and the first information. The imaging device according to claim 13.

15. An imaging device to which a lens device is detachable, an imaging element that photoelectrically converts an optical image formed by an imaging optical system including a tilt optical member that generates a tilt effect of tilting an optical axis of the optical system with respect to an imaging surface, and a focus optical member for performing focus adjustment, calculation means for calculating inclination information of a plane set based on a user's selection, and transmission means for transmitting the inclination information of the plane to the lens device. The imaging device is characterized by having the above.

16. An imaging system including an imaging device and a lens device detachable from the imaging device, wherein the imaging device has calculation means for calculating inclination information of a plane set based on a user's selection, and transmission means for transmitting the inclination information of the plane to the lens device. The lens device is an imaging optical system including a tilt optical member that generates a tilt effect of tilting the optical axis of the optical system with respect to the imaging surface, and a focus optical member for performing focus adjustment, control means for controlling the optical member using first information indicating a focus tilt that changes according to the position of the tilt optical member, and second information indicating an amount of change in the focus position with respect to the movement of the tilt optical member, receiving means for receiving the tilt information of the plane from the imaging device, first acquisition means for acquiring a first movement amount in a direction including a direction orthogonal to the optical axis when tilting the optical axis of the tilt optical member with respect to the imaging surface, using the tilt information of the plane and the first information, second acquisition means for acquiring a second movement amount in the direction including the optical axis when adjusting the focus of the focus optical member, using the second information, and an imaging system characterized by comprising the same.

17. An imaging system having an imaging device and a lens device detachable from the imaging device, wherein the lens device is an imaging optical system including a tilt optical member that generates a tilt effect of tilting the optical axis of the optical system with respect to the imaging surface, and a focus optical member for performing focus adjustment, control means for controlling the optical member using first information indicating a focus tilt that changes according to the position of the tilt optical member, and second information indicating an amount of change in the focus position with respect to the movement of the tilt optical member, and transmission means for transmitting the first information and the second information to the imaging device, wherein the imaging device has calculation means for calculating tilt information of a plane set based on a user's selection, receiving means for receiving the first information and the second information from the lens device, first acquisition means for acquiring a first movement amount in a direction including a direction orthogonal to the optical axis when tilting the optical axis of the tilt optical member with respect to the imaging surface, using the tilt information of the plane and the first information, second acquisition means for acquiring a second movement amount in the direction including the optical axis when adjusting the focus of the focus optical member, using the second information, and an imaging system characterized by comprising the same.

18. A step of obtaining first information indicating a focus tilt that changes according to the position of a tilt optical member that generates a tilt effect of tilting the optical axis of an optical system with respect to an imaging surface, which is stored in a storage means as table data, and second information indicating a change amount of a focus position with respect to the movement of the tilt optical member; A step of obtaining a first movement amount in a direction including a direction orthogonal to the optical axis when tilting the optical axis of the tilt optical member with respect to the imaging surface, using the first information; A step of obtaining a second movement amount in a direction including the optical axis during the focus adjustment of a focus optical member for performing focus adjustment, using the second information, wherein the control method is characterized by comprising these steps.

19. A program characterized by causing a computer to execute the control method according to Claim 18.

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