CN112369010A - Control device, imaging device, control method, and program - Google Patents
Control device, imaging device, control method, and program Download PDFInfo
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- CN112369010A CN112369010A CN202080003639.9A CN202080003639A CN112369010A CN 112369010 A CN112369010 A CN 112369010A CN 202080003639 A CN202080003639 A CN 202080003639A CN 112369010 A CN112369010 A CN 112369010A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
- H04N23/682—Vibration or motion blur correction
- H04N23/685—Vibration or motion blur correction performed by mechanical compensation
- H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
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Abstract
An image shake correction apparatus, a control apparatus thereof, an imaging apparatus (100), a control method, and a program. The image shake correction apparatus includes a first lens and a second lens that correct image shake by intersecting with an optical axis, and the control circuit includes a circuit configured to: a first vibration signal showing vibration is acquired from a vibration sensor, and based on the first vibration signal, a first lens is vibrated at a frequency of a first frequency band, and a second lens is vibrated at a frequency of a second frequency band higher than the first frequency band, thereby correcting image shake.
Description
Technical Field
The invention relates to a control device, an imaging device, a control method, and a program.
Background
Patent document 1 discloses: the first lens and the second lens constituting the afocal system are rotated, thereby correcting image shake.
Background art documents:
[ patent document ]
[ patent document 1] Japanese patent laid-open No. Hei 9-251127
Disclosure of Invention
The technical problems to be solved by the invention are as follows:
in a system that corrects image shake by moving a plurality of lenses, it is desirable to improve the correction performance of image shake.
Means for solving the technical problem:
the control device according to one aspect of the present invention may be a control device that controls an image shake correction device including a first lens and a second lens that move in a direction intersecting an optical axis to correct an image shake. The control device may comprise circuitry configured to: a first vibration signal indicating vibration is acquired from a vibration sensor. The circuit may be configured as follows: based on the first vibration signal, the first lens is vibrated at a frequency of a first frequency band, and the second lens is vibrated at a frequency of a second frequency band higher than the first frequency band, thereby correcting image shake.
The second lens is lighter than the first lens.
The second lens may have a smaller diameter than the first lens.
The circuit may be configured as follows: a second vibration signal showing the frequency of the first frequency band and a third vibration signal showing the frequency of the second frequency band are obtained from the first vibration signal. The circuit may be configured as follows: the first lens is vibrated at a frequency of a first frequency band based on the second vibration signal, and the second lens is vibrated at a frequency of a second frequency band based on the third vibration signal, thereby correcting image shake.
The circuit may be configured as follows: the second lens is vibrated at a frequency of a second frequency band based on the first vibration signal, and the first lens is vibrated at a frequency of the first frequency band based on a difference between a third vibration signal showing vibration of the second lens and the first vibration signal, thereby correcting image shake.
The control device according to one aspect of the present invention may be a control device that controls an image shake correction device including a first lens and a second lens that move in a direction intersecting an optical axis to correct an image shake. The control device may comprise circuitry configured to: a first vibration signal indicating vibration is acquired from a vibration sensor. The circuit may be configured as follows: the second lens is vibrated based on the first vibration signal, and the first lens is vibrated based on a difference between a second vibration signal showing vibration of the second lens and the first vibration signal, thereby correcting image shake.
The sensitivity of the first lens, which indicates a ratio of a moving amount of the first lens to an image shake correction amount of the first lens, is lower than the sensitivity of the second lens, which indicates a ratio of a moving amount of the second lens to an image shake correction amount of the second lens.
An image shake correction apparatus according to an aspect of the present invention may include: the above-mentioned control device; a first lens; a second lens; a first driving unit for driving the first lens; and a second driving part driving the second lens.
The first driving part may include a first voice coil motor. The second driving part may include a second voice coil motor.
The first driving part may include a voice coil motor. The second driving part may include a piezoelectric element or an ultrasonic motor.
An image pickup apparatus according to an aspect of the present invention may include: the image shake correction device described above; a vibration sensor; and an image sensor that photographs an image imaged through the first lens and the second lens.
A control method according to an aspect of the present invention may be a control method of controlling an image shake correction apparatus including a first lens and a second lens that move in a direction intersecting an optical axis to correct an image shake. The control method may comprise the following stages: a first vibration signal indicating vibration is acquired from a vibration sensor. The control method may comprise the following stages: based on the first vibration signal, the first lens is vibrated at a frequency of a first frequency band, and the second lens is vibrated at a frequency of a second frequency band higher than the first frequency band, thereby correcting image shake.
The program according to one aspect of the present invention may be a program for causing a computer to function as the control device.
According to an aspect of the present invention, the correction performance of image shake can be improved.
In addition, the above summary does not list all necessary features of the present invention. Furthermore, sub-combinations of these feature sets may also constitute the invention.
Drawings
Fig. 1 is a diagram showing an example of an external perspective view of an image pickup apparatus.
Fig. 2 is a schematic diagram showing functional blocks of the image pickup apparatus.
Fig. 3 is a diagram illustrating an example of a block diagram of an optical image shake correction mechanism.
Fig. 4 is a diagram showing an example of vibration signals of a first frequency band and a second frequency band included in an image shake frequency.
Fig. 5 is a diagram showing an example of the frequency of the first frequency band and the frequency of the second frequency band included in the image shake frequency.
Fig. 6 is a diagram illustrating another example of a block diagram of an optical image shake correction mechanism.
Fig. 7 is a diagram illustrating one example of a vibration signal of an image shake frequency and a vibration signal of a lens vibrating at a high frequency.
Fig. 8 is a diagram illustrating an example of a differential vibration signal of a vibration signal of an image shake frequency and a vibration signal of a lens vibrating at a high frequency.
Fig. 9 is a diagram showing one example of the hardware configuration.
Description of the symbols:
100 image pickup device
102 image pickup part
110 image pickup control unit
120 image sensor
130 memory
160 display part
162 indicating part
200 lens part
210 focusing lens
211 zoom lens
212, 213, 233, 234 lens driving part
2312, 2322 Voice coil Motor
214, 215, 235, 236 position sensor
220 lens control part
231, 232 lens
240 memory
250 vibration sensor
252 filter
1200 computer
1210 host controller
1212 CPU
1214 RAM
1220 input/output control
1222 communication interface
1230 ROM
Detailed Description
The present invention will be described below with reference to embodiments of the invention, but the following embodiments do not limit the invention according to the claims. Moreover, all combinations of features described in the embodiments are not necessarily essential to the inventive solution. It will be apparent to those skilled in the art that various changes and modifications can be made in the following embodiments. It is apparent from the description of the claims that the modes to which such changes or improvements are made are included in the technical scope of the present invention.
The claims, the specification, the drawings, and the abstract of the specification contain matters to be protected by copyright. The copyright owner would not make an objection to the facsimile reproduction by anyone of the files, as represented by the patent office documents or records. However, in other cases, the copyright of everything is reserved.
Various embodiments of the present invention may be described with reference to flow diagrams and block diagrams, where blocks may represent (1) stages of a process to perform an operation or (2) a "part" of a device that has the role of performing an operation. Certain stages and "sections" may be implemented by programmable circuits and/or processors. The dedicated circuitry may comprise digital and/or analog hardware circuitry. May include Integrated Circuits (ICs) and/or discrete circuits. The programmable circuitry may comprise reconfigurable hardware circuitry. The reconfigurable hardware circuit may include logical AND, logical OR, logical XOR, logical NAND, logical NOR, and other logical operations, flip-flops, registers, Field Programmable Gate Arrays (FPGAs), Programmable Logic Arrays (PLAs), etc. memory elements.
A computer readable medium may comprise any tangible device that can store instructions for execution by a suitable device. As a result, a computer-readable medium having stored thereon instructions that may be executed to create a means for implementing the operations specified in the flowchart or block diagram includes an article of manufacture including instructions that may be executed to implement the operations specified in the flowchart or block diagram block or blocks. As examples of the computer readable medium, an electronic storage medium, a magnetic storage medium, an optical storage medium, an electromagnetic storage medium, a semiconductor storage medium, and the like may be included. As more specific examples of the computer-readable medium, flopy (registered trademark) disk floppy disks, flexible disks, hard disks, Random Access Memories (RAMs), Read Only Memories (ROMs), erasable programmable read only memories (EPROMs or flash memories), Electrically Erasable Programmable Read Only Memories (EEPROMs), Static Random Access Memories (SRAMs), compact disc read only memories (CD-ROMs), Digital Versatile Discs (DVDs), blu-Ray (RTM) optical discs, memory sticks, integrated circuit cards, and the like may be included.
Computer readable instructions may include any one of source code or object code described by any combination of one or more programming languages. The source code or object code comprises a conventional procedural programming language. Conventional procedural programming languages may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or Smalltalk, JAVA (registered trademark), C + +, or the like, and the "C" programming language, or similar programming languages. The computer readable instructions may be provided to a processor or programmable circuitry of a general purpose computer, special purpose computer, or other programmable data processing apparatus, either locally or via a Wide Area Network (WAN), such as a Local Area Network (LAN), the internet, or the like. A processor or programmable circuit may execute the computer readable instructions to create means for implementing the operations specified in the flowchart or block diagram. Examples of processors include computer processors, processing units, microprocessors, digital signal processors, controllers, microcontrollers, and the like.
Fig. 1 is a diagram showing an example of an external perspective view of an imaging apparatus 100 according to the present embodiment. Fig. 2 is a diagram showing functional blocks of the imaging apparatus 100 according to the present embodiment.
The imaging device 100 includes an imaging section 102 and a lens section 200. The imaging unit 102 includes an image sensor 120, an imaging control unit 110, and a memory 130. The image sensor 120 may be formed of a CCD or a CMOS. The image sensor 120 outputs image data of an optical image formed by the zoom lens 211 and the focus lens 210 to the image pickup control section 110. The imaging control unit 110 may be configured by a microprocessor such as a CPU or MPU, a microcontroller such as an MCU, or the like. The memory 130 may be a computer-readable recording medium and may also include at least one of flash memories such as an SRAM, a DRAM, an EPROM, an EEPROM, and a USB memory. The memory 130 stores programs and the like necessary for the imaging control unit 110 to control the image sensor 120 and the like. The memory 130 may be provided inside the housing of the image pickup apparatus 100. The memory 130 may be configured to be detachable from the housing of the image pickup apparatus 100.
The imaging unit 102 may further include an instruction unit 162 and a display unit 160. The instruction unit 162 is a user interface for receiving an instruction from the user to the image pickup apparatus 100. The display unit 160 displays an image captured by the image sensor 120, various setting information of the imaging apparatus 100, and the like. The display portion 160 may be composed of a touch panel.
The lens part 200 includes a focus lens 210, a zoom lens 211, a lens driving part 212, a lens driving part 213, and a lens control part 220. The focus lens 210 and the zoom lens 211 may include at least one lens. At least a part or all of the focus lens 210 and the zoom lens 211 are configured to be movable along the optical axis. The lens portion 200 may be an interchangeable lens that is provided to be attachable to and detachable from the image pickup portion 102. The lens driving section 212 moves at least a part or all of the focus lens 210 along the optical axis via a mechanism member such as a cam ring, a guide shaft, or the like. The lens driving section 213 moves at least a part or all of the zoom lens 211 along the optical axis via a mechanism member such as a cam ring, a guide shaft, or the like. The lens control section 220 drives at least one of the lens driving section 212 and the lens driving section 213 in accordance with a lens control instruction from the image pickup section 102, and moves at least one of the focus lens 210 and the zoom lens 211 in the optical axis direction via a mechanism member to perform at least one of a zooming action and a focusing action. The lens control command is, for example, a zoom control command and a focus control command.
The lens part 200 includes an optical image shake correction mechanism (OIS). More specifically, the lens section 200 includes a lens 231 and a lens 232 for image shake correction, a lens driving section 233, a lens driving section 234, a position sensor 235, a position sensor 236, and a vibration sensor 250. The vibration sensor 250 may be a gyro sensor that detects vibration of the image pickup apparatus 100. The vibration sensor 250 may be an acceleration sensor that detects vibration of the image pickup apparatus 100. The gyro sensor detects, for example, angular shake and rotational shake. The acceleration sensor detects displacement shakes in, for example, the X direction and the Y direction. Even with a gyro sensor, the angle and rotation can be converted into a component in the X direction and a component in the Y direction. Even with the acceleration sensor, the displacement shake in the X direction and the Y direction can be converted into the angular shake and the rotational shake. The vibration sensor 250 may combine an acceleration sensor and a gyro sensor. The lens driving section 233 moves the lens 231 in a direction intersecting the optical axis. The lens driving section 233 can move the lens 231 in a direction perpendicular to the optical axis. The lens driving part 233 may include a voice coil motor. The lens driving section 234 moves the lens 232 in a direction intersecting the optical axis. The lens driving section 234 can move the lens 232 in a direction perpendicular to the optical axis. The lens driving part 234 may include a voice coil motor.
The position sensor 235 detects the position of the lens 231. The position sensor 235 can detect the position of the lens 231 in the direction perpendicular to the optical axis. The position sensor 235 may output the position of the lens 231 in the direction perpendicular to the optical axis as a vibration signal showing the vibration of the lens 231. The position sensor 236 detects the position of the lens 232. The position sensor 236 may detect the position of the lens 232 in the direction perpendicular to the optical axis. The position sensor 236 may output the position of the lens 232 in the direction perpendicular to the optical axis as a vibration signal showing the vibration of the lens 232.
The lens section 200 is one example of an image shake correction apparatus. The lens control section 220 acquires a display vibration first vibration signal from the vibration sensor 250, and based on the first vibration signal, vibrates the lens 231 and the lens 232 in a direction intersecting the optical axis through the lens driving section 233 and the lens driving section 234, thereby correcting image shake. The image sensor 120 captures an image imaged through the zoom lens 211, the focus lens 210, the lens 232, and the lens 232.
The lens control unit 220 causes the lens drive unit 234 to vibrate the lens 232 at a frequency of a first frequency band, and causes the lens drive unit 233 to vibrate the lens 231 at a frequency of a second frequency band higher than the first frequency band, thereby correcting image shake.
Since the lens 231 and the lens 232 for image shake correction are driven separately, the lens driving section 233 and the lens driving section 234 that drive the lens 231 and the lens 232, respectively, can be downsized. By driving the lens 231 and the lens 232 in different frequency bands, the influence of errors in the positions of the lens 231 and the lens 232 detected by the position sensor 235 and the position sensor 236 on image shake correction can be reduced. Further, by driving the lens 231 and the lens 232 at different frequency bands, image shake can be corrected at a wider frequency band.
The lens control part 220 may extract the vibration signal of the first frequency band and the vibration signal of the second frequency band from the vibration signal from the vibration sensor 250 through a filter. The lens control unit 220 may vibrate the lens 232 at the frequency of the first frequency band by the lens driving unit 234 based on the vibration signal of the first frequency band, and vibrate the lens 231 at the frequency of the first frequency band by the lens driving unit 233 based on the vibration signal of the second frequency band.
The lens control section 220 may vibrate the lens 231 at the frequency of the second frequency band through the lens driving section 233 based on the vibration signal from the vibration sensor 250. Further, the lens control unit 220 may cause the lens driving unit 234 to vibrate the lens 232 at the frequency of the first frequency band based on a difference between a vibration signal of the display lens 231 detected by the position sensor 235 and a vibration signal from the vibration sensor 250.
The sensitivity of the lens 231 may be different from the sensitivity of the lens 232. The sensitivity shows a ratio between a lens movement amount and an image shake correction amount generated by the lens. The image shake correction amount corresponding to the lens movement amount is larger for a lens with high sensitivity than for a lens with low sensitivity. That is, a lens with high sensitivity obtains a greater effect of correcting image shake with a smaller movement than a lens with low sensitivity. The lens 232 may have a lower sensitivity than the lens 231. The lens control unit 220 may vibrate the lens 231 having high sensitivity at a frequency of the second frequency band, and may vibrate the lens 232 having low sensitivity at a frequency of the first frequency band lower than the second frequency band.
The lens control unit 220 may vibrate the lens 231 having high sensitivity at the frequency of the second frequency band by the lens driving unit 233 based on the vibration signal from the vibration sensor 250, and vibrate the lens 232 having low sensitivity at the frequency of the first frequency band by the lens driving unit 234 based on the difference between the vibration signal of the display lens 231 detected by the position sensor 235 and the vibration signal from the vibration sensor 250. That is, the lens control unit 220 vibrates the lens 231 having high sensitivity based on the vibration signal from the vibration sensor 250, and then vibrates the lens 232 having low sensitivity to correct image shake that cannot be eliminated by the lens 231.
The lens driving part 233 driving the lens 231 may include a piezoelectric element or an ultrasonic motor instead of the voice coil motor. By using a piezoelectric element or an ultrasonic motor, miniaturization can be achieved.
Fig. 3 is a diagram illustrating an example of a block diagram of an optical image shake correction mechanism. The block diagram of fig. 3 shows the following example: the vibration signal of the first frequency band and the vibration signal of the second frequency band are extracted from the vibration signal from the vibration sensor 250 to drive the respective voice coil motors 2312 and 2322.
The vibration signal from the vibration sensor 250 is input to the filter 252. The filter 252 outputs a vibration signal showing a frequency component of image shake. As shown in fig. 4 and 5, PID2311 extracts a vibration signal 502 showing the vibration of the second frequency band from the vibration signal 500 from the filter 252, and PID2311 drives the voice coil motor 2312 to vibrate the lens 231 based on the vibration signal 502 showing the vibration of the second frequency band. The position sensor 235 outputs a vibration signal indicating vibration of the lens 231. Feedback control is performed by inputting a differential vibration signal of the vibration signal from the filter 252 and the vibration signal from the position sensor 235 to the PID 2311.
Likewise, as shown in fig. 4 and 5, PID2321 extracts vibration signal 501 showing vibrations of the first frequency band from vibration signal 500 from filter 252, and PID2321 drives voice coil motor 2322 based on vibration signal 501 showing vibrations of the first frequency band to vibrate lens 232. The position sensor 236 outputs a vibration signal indicating vibration of the lens 232. Feedback control is performed by inputting a differential vibration signal of the vibration signal from the filter 252 and the vibration signal from the position sensor 236 to the PID 2321. The filter 252 may extract a vibration signal 501 showing vibrations of a first frequency band and a vibration signal 502 showing vibrations of a second frequency band from the vibration signal 500.
Fig. 6 is a diagram illustrating another example of a block diagram of an optical image shake correction mechanism. The block diagram of fig. 6 shows the following example: the lens 231 is vibrated at the frequency of the second frequency band based on the vibration signal from the vibration sensor 250, and the image shake that cannot be corrected by the lens 231 is corrected by vibrating the lens 232 at the frequency of the first frequency band.
The vibration signal from the vibration sensor 250 is input to the filter 252. The filter 252 outputs a vibration signal showing a frequency component of image shake. As shown in fig. 7, the PID2311 drives the voice coil motor 2312 based on the vibration signal 511 from the filter 252, thereby vibrating the lens 231. The position sensor 235 outputs a vibration signal 512 indicating vibration of the lens 231. As shown in fig. 8, a differential vibration signal 513 of vibration signal 511 from filter 252 and vibration signal 512 from position sensor 235 is input to PID2321 and PID 2311. PID2321 drives voice coil motor 2322 based on differential vibration signal 513, thereby vibrating lens 232. The position sensor 236 outputs a vibration signal indicating vibration of the lens 232. Feedback control is performed by inputting a differential vibration signal of the differential vibration signal 513 and the vibration signal from the position sensor 236 to the PID 2321.
According to the present embodiment, the small lens 231 having a relatively small moment of inertia can be vibrated at a high frequency, and the large lens 232 having a relatively large moment of inertia can be vibrated at a low frequency. This can reduce power consumption and improve image shake correction performance.
FIG. 9 is an illustration of one example showing a computer 1200 that can fully or partially embody aspects of the invention. The program installed on the computer 1200 can cause the computer 1200 to function as one or more "sections" of or operations associated with the apparatus according to the embodiment of the present invention. Alternatively, the program can cause the computer 1200 to execute the operation or the one or more "sections". The program enables the computer 1200 to execute the processes or the stages of the processes according to the embodiments of the present invention. Such programs may be executed by the CPU1212 to cause the computer 1200 to perform specified operations associated with some or all of the blocks in the flowchart and block diagrams described herein.
The computer 1200 of the present embodiment includes a CPU1212 and a RAM1214, which are connected to each other through a host controller 1210. The computer 1200 also includes a communication interface 1222, an input/output unit, which are connected to the host controller 1210 through the input/output controller 1220. Computer 1200 also includes a ROM 1230. The CPU1212 operates in accordance with programs stored in the ROM1230 and the RAM1214, thereby controlling the respective units.
The communication interface 1222 communicates with other electronic devices through a network. The hard disk drive may store programs and data used by CPU1212 in computer 1200. The ROM1230 stores therein a boot program or the like executed by the computer 1200 at runtime, and/or a program depending on the hardware of the computer 1200. The program is provided through a computer-readable recording medium such as a CR-ROM, a USB memory, or an IC card, or a network. The program is installed in the RAM1214 or the ROM1230, which is also an example of a computer-readable recording medium, and executed by the CPU 1212. The information processing described in these programs is read by the computer 1200, and causes cooperation between the programs and the various types of hardware resources described above. An apparatus or method may be constructed by implementing operations or processes of information according to the use of the computer 1200.
For example, when communication is performed between the computer 1200 and an external device, the CPU1212 may execute a communication program loaded in the RAM1214, and instruct the communication interface 1222 to perform communication processing based on processing described in the communication program. The communication interface 1222 reads transmission data stored in a transmission buffer provided in a recording medium such as the RAM1214 or a USB memory and transmits the read transmission data to a network, or writes reception data received from the network in a reception buffer or the like provided in the recording medium, under the control of the CPU 1212.
Further, the CPU1212 may cause the RAM1214 to read all or a necessary portion of a file or a database stored in an external recording medium such as a USB memory, and perform various types of processing on data on the RAM 1214. Then, the CPU1212 may write back the processed data to the external recording medium.
Various types of information such as various types of programs, data, tables, and databases may be stored in the recording medium and processed by the information. With respect to data read from the RAM1214, the CPU1212 may execute various types of processing described throughout this disclosure, including various types of operations specified by an instruction sequence of a program, information processing, condition judgment, condition transition, unconditional transition, retrieval/replacement of information, and the like, and write the result back into the RAM 1214. Further, the CPU1212 can retrieve information in files, databases, etc., within the recording medium. For example, when a plurality of entries having attribute values of first attributes respectively associated with attribute values of second attributes are stored in a recording medium, the CPU1212 may retrieve an entry matching a condition specifying an attribute value of a first attribute from the plurality of entries and read an attribute value of a second attribute stored in the entry, thereby acquiring an attribute value of a second attribute associated with a first attribute satisfying a predetermined condition.
The programs or software modules described above may be stored on the computer 1200 or on a computer-readable storage medium near the computer 1200. In addition, a recording medium such as a hard disk or a RAM provided in a server system connected to a dedicated communication network or the internet may be used as the computer-readable storage medium, so that the program can be provided to the computer 1200 via the network.
The present invention has been described above using the embodiments, but the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various changes and modifications can be made in the above embodiments. It is apparent from the description of the claims that the modes to which such changes or improvements are made are included in the technical scope of the present invention.
It should be noted that the execution order of the operations, the sequence, the steps, the stages, and the like in the devices, systems, programs, and methods shown in the claims, the description, and the drawings of the specification can be realized in any order as long as "before. The operational flow in the claims, the specification, and the drawings of the specification is described using "first", "next", and the like for convenience, but it is not necessarily meant to be performed in this order.
Claims (13)
1. A control device that controls an image shake correction device including a first lens and a second lens that move in a direction intersecting an optical axis to correct image shake, characterized by comprising a circuit configured to:
acquiring a first vibration signal showing vibration from a vibration sensor;
the first lens is vibrated at a frequency of a first frequency band and the second lens is vibrated at a frequency of a second frequency band higher than the first frequency band based on the first vibration signal, thereby correcting image shake.
2. The control device according to claim 1, wherein the second lens is lighter than the first lens.
3. The control device according to claim 1, wherein a diameter of the second lens is smaller than a diameter of the first lens.
4. The control device of claim 1, wherein the circuit is configured as follows:
acquiring a second vibration signal showing the frequency of the first frequency band and a third vibration signal showing the frequency of the second frequency band from the first vibration signal;
the first lens is vibrated at the frequency of the first frequency band based on the second vibration signal, and the second lens is vibrated at the frequency of the second frequency band based on the third vibration signal, thereby correcting image shake.
5. The control device of claim 1, wherein the circuit is configured as follows:
the second lens is vibrated at the frequency of the second frequency band based on the first vibration signal, and the first lens is vibrated at the frequency of the first frequency band based on a difference between a third vibration signal showing the vibration of the second lens and the first vibration signal, thereby correcting image shake.
6. A control device that controls an image shake correction device including a first lens and a second lens that move in a direction intersecting an optical axis to correct image shake, characterized by comprising a circuit configured to:
acquiring a first vibration signal showing vibration from a vibration sensor;
the second lens is vibrated based on the first vibration signal, and the first lens is vibrated based on a difference between a second vibration signal showing vibration of the second lens and the first vibration signal, thereby correcting image shake.
7. The control device according to claim 6, wherein a sensitivity of the first lens indicating a ratio of a moving amount of the first lens to an image shake correction amount of the first lens is lower than a sensitivity of the second lens indicating a ratio of a moving amount of the second lens to an image shake correction amount of the second lens.
8. An image shake correction apparatus characterized by comprising: the control device according to any one of claims 1 to 7;
the first lens;
the second lens;
a first driving unit that drives the first lens; and
and a second driving part for driving the second lens.
9. The image shake correction apparatus according to claim 8, wherein the first drive section includes a first voice coil motor,
the second driving part includes a second voice coil motor.
10. The image shake correction apparatus according to claim 8, wherein the first drive section includes a voice coil motor,
the second driving part includes a piezoelectric element or an ultrasonic motor.
11. An image pickup apparatus, comprising: the image shake correction apparatus according to any one of claims 8 to 10;
the vibration sensor; and
and an image sensor that photographs an image imaged through the first lens and the second lens.
12. A control method of controlling an image shake correction apparatus including a first lens and a second lens which move in a direction intersecting an optical axis to correct an image shake, characterized by comprising the steps of:
acquiring a first vibration signal showing vibration from a vibration sensor; and
the first lens is vibrated at a frequency of a first frequency band and the second lens is vibrated at a frequency of a second frequency band higher than the first frequency band based on the first vibration signal, thereby correcting image shake.
13. A program for causing a computer to function as the control device according to any one of claims 1 to 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019172784A JP6812618B1 (en) | 2019-09-24 | 2019-09-24 | Control device, imaging device, control method, and program |
| JP2019-172784 | 2019-09-24 | ||
| PCT/CN2020/113964 WO2021057462A1 (en) | 2019-09-24 | 2020-09-08 | Control device, photographing device, control method, and program |
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| CN112369010A true CN112369010A (en) | 2021-02-12 |
| CN112369010B CN112369010B (en) | 2022-05-24 |
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| CN202080003639.9A Expired - Fee Related CN112369010B (en) | 2019-09-24 | 2020-09-08 | Control device, imaging device, and control method |
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| JP2016191763A (en) * | 2015-03-31 | 2016-11-10 | キヤノン株式会社 | Optical equipment having image blur correction device |
| JP2017032653A (en) * | 2015-07-29 | 2017-02-09 | キヤノン株式会社 | Image blur correction device, control method thereof, imaging apparatus, and optical apparatus |
| CN110121024A (en) * | 2018-02-07 | 2019-08-13 | 佳能株式会社 | Device for image stabilization, camera system and its control method |
| CN109862243A (en) * | 2019-01-31 | 2019-06-07 | 维沃移动通信有限公司 | The control method of terminal device and terminal device |
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