JP5142558B2 - Optical apparatus, imaging apparatus including the same, and control method of optical apparatus - Google Patents

Description

The present invention relates to an optical apparatus having a function of correcting image blur, an imaging apparatus including the same, and a method for controlling the optical apparatus .

  When shooting a subject, vibration may be applied to the camera body due to the shake of the photographer (hand shake, etc.) or when the release button is pressed, and this may cause a phenomenon (image shake) of the shot image. . As a countermeasure, there has been a camera having a correction lens for correcting image blur. Cameras having such a correction lens have been often seen in single-lens reflex cameras so far, but in recent years, they have been widely adopted in compact cameras.

  Many of the cameras having the correction lens detect the camera shake amount by a shake detection sensor and move the correction lens in a direction to suppress the shake amount to reduce the influence of image shake.

  Further, recent cameras have been required to be smaller than ever, and there are many restrictions on the size and layout of lenses, lens barrels, substrates, and the like. In the case of a camera having an image blur correction function that requires such downsizing, the correction lens drive system and other drive systems are close to each other. For this reason, even if the magnetic interference is caused by the mutual magnets and coils and the correction lens is moved according to the shake amount as described above, the desired position and the actual position may be shifted. In particular, a diaphragm, a filter that attenuates the amount of light passing through (hereinafter referred to as an ND filter), and a shutter are often arranged at a position where the light beam is most focused, like a correction lens. That is, when the lens is arranged at a position where the light beam is focused, the lens diameter of the correction lens can be reduced, and the shutter speed can be increased as the aperture is reduced. Therefore, there is a higher possibility that the drive systems that drive them are arranged close to each other compared to other drive systems.

  8, 9 and 10 are configuration diagrams showing the arrangement of the correction lens unit and the aperture unit in the lens barrel. The correction lens unit 11c energizes the coil 11d to generate a magnetic field, thereby moving the magnet 11e integrated with the correction lens unit 11c in a direction perpendicular to the optical axis. Then, the position of the correction lens unit 11c is detected by the position detection sensor 32, and the position of the correction lens unit 11c is controlled by feedback control. A diaphragm unit 13 moves the magnet 13b through the yoke 13c by a magnetic field generated by energizing the coil 13a. As a result, the diaphragm unit 13 operates. The magnetic field generated when driving the actuator of the aperture unit 13 and the magnetic field of the magnet 13b interfere with the magnet 11e and the position sensor 32 of the correction lens unit 11c, and the position is shifted by acting on the correction lens unit 11c. End up.

  FIG. 11 is a schematic diagram showing the state of the positional deviation. It is assumed that the position command value of the correction lens unit 11c is controlled to be kept constant as indicated by the solid line 511 in the left diagram. However, the interference of the magnetic field is received depending on the position of the magnet 13b of the aperture unit 13 and whether or not the coil 13a is energized, and the actual position of the correction lens unit 11c is not constant as shown by the solid line 512 in the right figure, and is shifted. Will occur. This is the same not only when it is desired to fix the correction lens unit 11c at a fixed position but also when a position command corresponding to the camera shake amount is given from the shake correction control unit in order to correct image shake.

Therefore, conventionally, it has been proposed (Patent Document 1) to prevent magnetic interference by inserting a member for preventing magnetic interference between the actuators. In addition, a configuration has been proposed (Patent Document 2) in which a magnetic body serving as a counter is added to cancel an influencing magnetic field.
Japanese Patent Laid-Open No. 11-305280 JP 2002-303908 A

  However, both of the above-described conventional proposals add members, and severely restrict the size and layout requirements recently required. In addition, since these countermeasures are mechanical, if the countermeasures are taken during the development, the time and labor required for the correction are greater than the program development.

(Object of invention)
An object of the present invention is to provide an optical apparatus , an image pickup apparatus including the same , and a method for controlling the optical apparatus that can achieve downsizing and ease of manufacture while having an image blur correction function. is there.

In order to achieve the above object, the present invention provides shake detection means for detecting shake, a correction optical unit movable in a direction for correcting the shake, drive means for magnetically driving the correction optical unit, A shake correction control unit that calculates a position command value of the correction optical unit according to an output of the shake detection unit and controls the drive unit, and a light amount adjustment unit that is magnetically driven and adjusts the amount of light incident from the subject. And obtaining a correction amount for canceling magnetic interference exerted on the driving means by the light quantity adjusting means according to the obtained state of the light quantity adjusting means, and obtaining the position command it is an optical device characterized by having a position command value correcting means for applying to the value.

According to the present invention, it is possible to provide an optical apparatus , an image pickup apparatus including the same , and a method for controlling the optical apparatus that can achieve downsizing and ease of manufacture while having an image blur correction function.

  The best mode for carrying out the present invention is as shown in Examples 1 and 2 below.

  FIG. 1 is a system configuration diagram showing an imaging apparatus according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 10 denotes an optical system, which includes a magnification lens 11a, a focus adjustment lens 11b, a shutter 12, a correction lens unit 11c similar to FIG. 8, a diaphragm unit 13 similar to FIG. An image sensor 21 converts an optical image into an electrical signal, and an A / D converter 22 converts an analog signal output from the image sensor 21 into a digital signal. A timing generation circuit 24 supplies a clock signal and a control signal to the image sensor 21, A / D converter 22, and D / A converter 27, and is controlled by the memory control circuit 25 and the system control circuit 50.

  An image processing circuit 23 performs predetermined pixel interpolation processing and color conversion processing on the data from the A / D converter 22 or the data from the memory control circuit 25. The image processing circuit 23 performs predetermined calculation processing using the captured image data, and the system control circuit 50 controls the exposure control unit 41 and the focus control unit 42 based on the obtained calculation result. . That is, TTL (through-the-lens) AF (autofocus) processing, AE (automatic exposure) processing, and EF (flash pre-emission) processing are performed. Further, the image processing circuit 23 performs predetermined arithmetic processing using the captured image data, and also performs TTL AWB (auto white balance) processing based on the obtained arithmetic result.

  A memory control circuit 25 controls the A / D converter 22, the image processing circuit 23, the timing generation circuit 24, the image display memory 26, the D / A converter 27, the compression / decompression circuit 28, and the internal memory 29. The data of the A / D converter 22 is sent to the image display memory 26 or the internal memory 29 via the image processing circuit 23 and the memory control circuit 25, or the data of the A / D converter 22 is directly passed to the memory control circuit 25. Written. 26 is an image display memory, and 27 is a D / A converter. Reference numeral 7 denotes an image display unit including a TFT, an LCD, and the like. Display image data written in the image display memory 26 is displayed on the image display unit 7 via a D / A converter 27. If image data captured using the image display unit 7 is sequentially displayed, an electronic finder function can be realized.

  A compression / decompression circuit 28 compresses and decompresses image data by adaptive discrete cosine transform (ADCT) or the like, reads an image stored in the internal memory 29, performs compression processing or decompression processing, and stores the processed data in the internal memory. Write to 29. Reference numeral 29 denotes an internal memory for storing captured still images and moving images, and has a sufficient storage capacity for storing a predetermined number of still images and a predetermined time of moving images. As a result, even in the case of continuous shooting or panoramic shooting in which a plurality of still images are continuously shot, it is possible to write a large amount of images to the internal memory 29 at high speed. The internal memory 29 can also be used as a work area for the system control circuit 50.

  A shake correction control unit 30 detects the shake amount of the camera by the shake detector 33, and controls the correction lens unit 11c by the image stabilization drive control unit 31 and the position detection sensor 32 according to the shake amount. Image blur due to shake is suppressed (details will be described later). An exposure control unit 41 controls the shutter 12 and the aperture unit 13 and has a flash light control function in cooperation with the strobe 8. Reference numeral 42 denotes a focus control unit that controls the focus adjustment lens 11b, 43 denotes a zoom control unit that controls zooming by the magnification lens 11a, and 44 denotes a barrier control unit that controls the operation of the barrier 2 serving as a protective member.

  A strobe 8 has an AF auxiliary light projecting function and a strobe dimming function. Reference numeral 50 denotes a system control circuit that controls the entire imaging apparatus 1, and 45 denotes a memory that stores constants, variables, programs, and the like for operation of the system control circuit 50. Reference numeral 47 denotes a display unit such as a liquid crystal display device or a speaker that displays an operation state, a message, or the like using characters, images, sounds, or the like according to execution of a program in the system control circuit 50. The display unit 47 is installed at a single or a plurality of positions near the operation unit of the image pickup apparatus 1 so as to be easily visible, and is configured by a combination of, for example, an LCD, an LED, and a sounding element. In addition, the display unit 47 may have a part of the function installed in the optical viewfinder 6.

  Among the display contents of the display unit 47, what is displayed on the LCD or the like includes single shot / continuous shooting display, self-timer display, compression rate display, recording pixel number display, recording number display, and remaining image number display. is there. Furthermore, there are shutter speed display, aperture value display, exposure correction display, flash display, red-eye reduction display, macro shooting display, buzzer setting display, clock battery level display, battery level display, and error display. Further, there are information display by a multi-digit number, display / detachment status display of the recording medium 60, communication I / F operation display, date / time display, and the like. Among the display contents of the display unit 47, what is displayed in the optical viewfinder 6 includes in-focus display, camera shake warning display, flash charge display, shutter speed display, aperture value display, exposure correction display, and the like.

  Reference numeral 46 denotes an electrically erasable / recordable nonvolatile memory such as an EEPROM.

  Reference numerals 3, 4 and 5 are operation units for inputting various operation instructions of the system control circuit 50, and are configured by a single or a combination of a switch, a dial, a touch panel, pointing by gaze detection, a voice recognition device, and the like. . Hereinafter, these operation units will be described in detail.

  Reference numeral 3 denotes a release switch. When pressed halfway (SW1 is turned on), operations such as AF (auto focus) processing, AE (automatic exposure) processing, AWB (auto white balance) processing, and EF (flash pre-flash) processing are started. Is done. When fully pressed (SW2 is turned on), an exposure process is performed in which image data is written to the internal memory 29 via the A / D converter 22 and the memory control circuit 25 with the signal read from the image sensor 21. Furthermore, a development process using computations in the image processing circuit 23 and the memory control circuit 25, a recording process in which image data is read from the internal memory 29, compressed by the compression / decompression circuit 28, and written to the recording medium 60. A series of processing operations is started.

  Reference numeral 4 denotes a mode dial switch, which can switch and set various function modes such as power-off, automatic shooting mode, shooting mode, panoramic shooting mode, playback mode, multi-screen playback / erase mode, and PC connection mode. An operation unit 5 includes various buttons, a touch panel, and the like, and includes a menu button, a set button, a macro button, a multi-screen playback page break button, a flash setting button, and a single shooting / continuous shooting / self-timer switching button. Furthermore, menu movement + (plus) button, menu movement-(minus) button, playback image movement + (plus) button, playback image-(minus) button, shooting image quality selection button, exposure compensation button, date / time setting button Etc.

  Reference numeral 2 denotes a barrier that is a protective member that prevents the imaging unit from being soiled or damaged by covering the imaging unit including the optical system 10 of the imaging device 1. Reference numeral 6 denotes an optical viewfinder, which can take an image using only the optical viewfinder 6 without using the electronic viewfinder function of the image display unit 7. In the optical viewfinder 6, some functions of the display unit 47 such as an in-focus display, a camera shake warning display, a flash charge display, a shutter speed display, an aperture value display, an exposure correction display, and the like are installed.

  A power control unit 48 includes a battery detection circuit, a DC / DC converter, a switch circuit that switches a block to be energized, and the like. Then, the presence / absence of a battery, the type of battery, the remaining battery level are detected, the DC / DC converter is controlled based on the detection result and the instruction of the system control circuit 50, and the required voltage is recorded for a required period. To each part including Reference numeral 49 is a connector, 70 is a power supply, 71 is a connector, 72 is a primary battery such as an alkaline battery or lithium battery, a secondary battery such as a NiCd battery, NiMH battery or Li battery, or an AC adapter.

  51 is an interface with a recording medium such as a memory card or hard disk, 52 is a connector for connecting to a recording medium such as a memory card or hard disk, and 53 is a recording medium for detecting whether or not the recording medium 60 is attached to the connector 52. It is attachment / detachment detection means. The interface and the connector may be configured using a PCMCIA card, SD card, or other standard.

  A communication unit 54 has various communication functions such as RS232C, USB, IEEE1394, LAN, and wireless communication. Reference numeral 55 denotes a connector for connecting the imaging device 1 to another device by the communication unit 54 or an antenna in the case of wireless communication. Reference numeral 60 denotes a recording medium such as a memory card or a hard disk. The recording medium 60 includes a recording unit 63 composed of a semiconductor memory, a magnetic disk, or the like, an interface 62 with the imaging device 1, and a connector (antenna) 61 that connects to the imaging device 1.

  Next, the internal configuration of the image stabilization drive control unit 31 will be described with reference to FIG.

  From the signal detected by the shake detector 33, only necessary signals are extracted by the filter 33a and the amplifier 33b, converted from an analog value to a digital value by the A / D converter 33c, and taken in as a camera shake amount. Then, based on the obtained shake amount, a position command value for driving the correction lens unit 11c is calculated by the calculator 31b. The signal detected by the position detection sensor 32 of the correction lens unit 11c is amplified by the amplifier 32a and is taken in as a position signal of the correction lens unit 11c via the A / D converter 32b. Using these signals, the lens controller 31a performs feedback control. Then, based on the control amount determined by the lens control unit 31a, the drive driver 30c energizes the coil 11d as an actuator, and the correction lens unit 11c is moved in a plane orthogonal to the optical axis, thereby causing camera shake. The image blur due to is corrected.

  In the present embodiment, a magnetic correction amount calculation unit 31d that acquires information on the size of the aperture opening and the energization time from the exposure control unit 41 and corrects the position command value of the correction lens unit 11c is provided.

  Next, the operation of the image pickup apparatus 1 in Embodiment 1 of the present invention will be described using the flowchart of FIG.

  In step S101, it is determined whether or not the release switch 3 is half-pressed. If it is detected that the release switch 3 has been half-pressed, the process proceeds to step S102 to perform pre-shooting processing 1 such as an AF operation, and in step S103, photometry is performed. I do. In the next step S104, exposure calculation is performed based on the photometric data, and exposure conditions such as shutter speed and aperture value are obtained. In the subsequent step S105, the necessity of changing the aperture unit 13 or the ND filter (not shown) is determined from the exposure conditions. As a result, if it is necessary to change, the process proceeds to step S106, and if there is no need to change, the process proceeds to step S110.

  In step S106, a drive signal for changing the aperture unit 13 or an ND filter (not shown) is transmitted. In the next step S107, the diaphragm unit 13 and an ND filter (not shown) are driven, and the position of the correction lens unit 11c is determined according to the state of the generated magnetic field such as the size of the opening of the diaphragm unit 13 and the energization time. Correct. This position correction method will be described later with reference to FIGS. In the next step S108, it is determined whether or not energization has been completed. If not completed, the process returns to step S107, and the same operation is repeated. Thereafter, when it is determined that the energization has been completed, the process proceeds to step S109. Here, even when the energization is completed and the aperture unit 13 is shifted to the non-energized state, the position correction of the correction lens unit 11c is performed if necessary.

  In the next step S110, the state of the release switch 3 is determined. If it is determined that the pressing operation has been released, the process returns to step S101. If it is determined that the half-pressed state is maintained, the process waits in step S110. If it is determined that the half-pressed state is shifted to the fully-pressed state, the process proceeds to step S111.

  In step S111, pre-shooting processing 2 such as switching of the reading mode of the image sensor 21 is performed. Then, in the next step S112, exposure to the image sensor 21 is started. At this time, if the release switch 3 is released, the initial state is restored. Thereafter, in step S113, an exposure process is performed, and in the next step S114, it is determined whether or not it is time to close the shutter 12, that is, whether or not the exposure time has ended. As a result, if the exposure time has not expired, the process returns to step S113. If it has been completed, the process proceeds to step S115, where a shutter close signal is transmitted and the shutter 12 is closed. This completes the still image exposure operation.

  In the next step S117, post-exposure processing, that is, data extraction from the image sensor 21 is performed. In the subsequent step S118, a shutter open signal is transmitted, and in the next step S119, the release switch 3 is set in a standby state. Return.

  Next, an example of obtaining a correction amount for correcting a positional shift due to magnetic interference of the correction lens unit 11c will be described with reference to FIGS.

  FIG. 4 is a schematic diagram for explaining the position correction of the correction lens unit 11c. As described with reference to FIG. 11, even if the position command signal of the correction lens is kept constant, the position is shifted from a desired position due to magnetic interference.

  In the first embodiment, therefore, a position command value correction amount that cancels the influence of magnetic interference in the position command signal for controlling the correction lens unit 11c (here, this correction amount is referred to as a magnetic correction amount). ). That is, as shown in FIG. 4, when the correction lens unit 11c is originally intended to be fixed at one place (solid line 511), the position command value is corrected in the direction opposite to the direction of deviation due to magnetic interference (broken line 512 ′) (indicated by the solid line 513). Add the magnetic correction amount). As a result, the actual correction lens unit 11c can be fixed close to a desired position. The magnetic correction amount is calculated by the magnetic correction amount calculation unit 31d in FIG.

  Next, the operation of calculating the magnetic correction amount according to the states of the aperture unit 13 and the ND filter will be described with reference to the flowchart of FIG.

  In step S201, the state of the aperture unit 13 (and / or the advance / retreat state of the ND filter with respect to the photographing optical path) is determined. For example, when the aperture unit 13 is in the open state (state 1), the process proceeds to step S202, and a correction amount 1 that is a certain correction amount is calculated as the magnetic correction amount. When the aperture unit 13 is in the small aperture (state 2), the process proceeds to step S203, and a correction amount 2 is calculated. If it is in the state *, the process proceeds to step S204 to calculate the correction amount *. In the next step S205, the calculated magnetic correction amount is added to the position command value for controlling the correction lens unit 11c, and supplied to the lens control unit 30a as a new position command value.

  Here, as an example of the method of calculating the magnetic correction amount in steps S202 to S204, the aperture state is acquired from the exposure control unit 41 in FIG. 1, and the magnetic correction amount is calculated using an equation. This mathematical expression is an approximate expression obtained by measuring the positional deviation of the correction lens unit 11c actually caused by magnetic interference and obtaining a position command value that cancels the positional deviation.

  Here, as the type of state, an open / small aperture is used here, but an energized / non-energized state may be used. Further, the actuator that drives the shutter 12 may be energized / de-energized.

  According to the first embodiment described above, the influence of magnetic interference received by the correction lens unit 11c by driving the actuator for the light amount adjusting member such as the aperture unit 13 or an ND filter (not shown) is calculated or selected as the magnetic correction amount. To cancel.

  Therefore, it is possible to eliminate factors that hinder downsizing of the imaging apparatus, such as deterioration in the degree of freedom of layout and increase in size, which are caused by the addition of members as in the past. As a result, it is possible to provide a smaller imaging apparatus that can realize an appropriate image blur correction operation.

  In addition, because of the correction by the control, such as correcting the position command value by the magnetic correction amount, even if there is a difference in the influence of the magnetic field one by one and there are individual differences, a different correction value for each individual It is also possible to make a correction that is difficult to achieve with a mechanical member.

  Further, since the configuration is not mechanically corrected as in the prior art, the time and labor required for correction are easy even if measures are taken during the development.

  One of the factors causing the deviation in the correction lens unit 11c is the magnet of the diaphragm actuator. The strength and direction of the magnetic field of the magnet is not limited to the final aperture state such as open / small aperture, but the magnet being driven. It also changes depending on the position. Therefore, in order to take into account the change of the magnet being driven, the determination of the correction amount according to the time elapsed since the start of energization will be described as a second embodiment of the present invention with reference to the flowchart of FIG. . The configuration and other operations of the imaging apparatus are the same as those in the first embodiment.

  In step S211 of FIG. 6, the state of the aperture unit 13 is acquired, and in the subsequent step S212, the energization time to the aperture unit 13 is acquired. In the next step 213, the magnetic correction amount is calculated using mathematical formulas based on the acquired data. In the next step S214, the calculated magnetic correction amount is added to the position command value for controlling the correction lens unit 11c, and supplied to the lens control unit 31a as a new position command value.

  By performing the control as described above, the same effect as in the first embodiment can be obtained.

  In Example 2, in order to consider the change of the magnet during driving, the correction amount was obtained by a mathematical expression according to the time elapsed since the start of energization. In the third embodiment of the present invention, an example in which the aperture state, its energization time, and the magnetic correction amount are prepared in advance as a data table will be described with reference to the flowchart of FIG. The configuration and other operations of the imaging apparatus are the same as those in the first embodiment.

  In step S311 of FIG. 7, the state of the aperture unit 13 is acquired, and in the subsequent step S312, the energization time for the aperture unit 13 is acquired. In the next step 313, the acquired data is collated with a data table prepared in advance, and in the next step S314, a magnetic correction amount is selected. In subsequent step S315, the calculated magnetic correction amount is added to the position command value for controlling the correction lens unit 11c, and is supplied to the lens control unit 31a as a new position command value.

  By performing the control as described above, the same effect as in the first embodiment can be obtained.

  In addition, the magnetic correction amount, the calculation formula, and the data table used in the first to third embodiments may be the same for the same type of imaging apparatus, and individual characteristics of each imaging apparatus are produced. You may have what was measured in the process and obtained from the characteristic data for each individual.

  In the first to third embodiments, the driving of the diaphragm unit 13 and the ND filter (not shown) is illustrated, but the shutter 12 may be used as the driving unit simultaneously with the correction lens unit 11c. The correction lens unit 11c is corrected before the release switch 3 is fully pressed, but may be any time as long as the drive system that is the source of the interference magnetic field operates.

  The configurations of the first to third embodiments do not limit the invention according to each claim. In addition, not all the combinations of features described in the first to third embodiments are essential for the solution means of the invention.

(Correspondence between the present invention and the embodiment)
The shake detector 33 corresponds to the shake detection means of the present invention, and the correction lens unit 11c corresponds to the correction optical means that can move in the direction of correcting the shake. The image stabilization drive control unit 31 corresponds to a shake correction control unit of the present invention, and the exposure amount control unit 41 corresponds to a light amount adjustment unit (aperture unit) that adjusts the amount of light incident from the subject. The magnetic correction amount calculation unit 31d corresponds to the position command value correction unit of the present invention. The position command value correction unit is, for example, a position command according to at least one of the size of the aperture of the aperture unit and the presence / absence of energization. Correct the value.

1 is a system configuration diagram illustrating an imaging apparatus according to Embodiment 1 of the present invention. It is a block diagram which shows the internal structure of the image stabilization drive control part of FIG. 3 is a flowchart illustrating an operation of the imaging apparatus according to the first embodiment of the present invention. It is a figure explaining the example which calculates | requires the corrected amount for correcting the position shift by the magnetic interference of the correction | amendment lens unit in Example 1 of this invention. It is a flowchart which shows the calculation operation | movement of the magnetic correction amount according to the state of the aperture unit and ND filter in Example 1 of this invention. It is a flowchart which shows the calculation operation | movement of the magnetic correction amount according to the state of the aperture unit and ND filter in Example 2 of this invention. It is a flowchart which shows the selection operation | movement of the magnetic correction amount according to the state of the aperture unit and ND filter in Example 3 of this invention. It is a perspective view which shows the conventional image blur correction mechanism. FIG. 9 is a configuration diagram illustrating an aperture unit that is disposed in the vicinity of the image blur correction mechanism of FIG. 8. FIG. 9 is an exploded perspective view of the image shake correction mechanism and the aperture unit in FIG. 8. FIG. 9 is a diagram for explaining a state of positional deviation of the correction lens unit due to magnetic interference in the image blur correction mechanism of FIG. 8.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Imaging device 3 Release switch 10 Optical part 11c Correction lens unit 12 Shutter 13 Aperture unit 21 Imaging element 30 Shake correction control part 31 Anti-vibration drive control part 31a Lens control part 31d Magnetic correction amount calculation part 32 Position detection sensor 33 Shake detector 41 Exposure Control Unit 50 System Control Circuit

Claims (7)

Shake detection means for detecting shake;
A correction optical unit movable in a direction for correcting the shake;
Driving means for magnetically driving the correction optical unit;
A shake correction control unit that calculates a position command value of the correction optical unit according to an output of the shake detection unit and controls the driving unit;
A light amount adjusting means that is magnetically driven and adjusts the amount of light incident from the subject;
The state of the light amount adjusting unit is acquired, and a correction amount for canceling the magnetic interference exerted on the driving unit by the light amount adjusting unit is obtained according to the acquired state of the light amount adjusting unit, and the position command value is obtained. an optical apparatus characterized by having a position command value correcting means for applying. The light amount adjusting means is an aperture unit;
The position command value correcting means adds a correction amount for canceling the magnetic interference to the position command value according to the size of the opening of the aperture unit. Optical equipment. The light amount adjusting means is an aperture unit;
The position command value correction means adds a correction amount for canceling the magnetic interference to the position command value according to at least one of the size of the aperture of the aperture unit and the presence / absence of energization. The optical apparatus according to claim 1. The light amount adjusting means is a filter unit for attenuating the passing light amount,
The position command value correcting means adds a correction amount for canceling the magnetic interference to the position command value in accordance with at least one of the state of advance / retreat of the filter unit with respect to the imaging optical path and the presence / absence of energization. The optical apparatus according to claim 1. The light amount adjusting means is a shutter unit;
2. The optical apparatus according to claim 1, wherein the position command value correcting unit adds a correction amount for canceling the magnetic interference to the position command value in accordance with whether or not the shutter unit is energized. .   An imaging apparatus comprising the optical apparatus according to claim 1. Optics having a correcting optical unit movable in a direction for correcting the shake, and a driving means for the correction optical unit magnetically driven, magnetically driven, and a light amount adjusting means for adjusting the amount of incident light from the subject Control method,
A shake detection step for detecting shake;
A shake correction control step of calculating a position command value of the correction optical unit according to an output of the shake detection step, and controlling the driving means;
The state of the light amount adjusting unit is acquired, and a correction amount for canceling the magnetic interference exerted on the driving unit by the light amount adjusting unit is obtained according to the acquired state of the light amount adjusting unit, and the position command value is obtained. control method for an optical device characterized by having a position command value correcting step of adding.

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