Optical instrument, method for controlling optical instrument, and program

Abstract

To provide an optical instrument with which a good three-dimensional photographed image with reduced image blur can be obtained.SOLUTION: An optical instrument has: first antivibration means (104; 111, 107; 114, 201); second antivibration means (104; 111, 107; 114, 201); and control means (117, 119, 202) that move the first antivibration means and the second antivibration means in a direction perpendicular to an optical axis. The control means isolate vibration by using at least one of the first antivibration means and the second antivibration means, and adjust the angle of convergence by using at least the other of the first antivibration means and the second antivibration means.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an optical device, a control method for an optical device, and a program.

Background Art

[0002] When performing stereoscopic photography using a compound-eye imaging device or a plurality of imaging devices, by operating the baseline length, which is the distance between the optical axes of two optical systems, and the convergence angle, which is the angle at which the optical axes of the two optical systems substantially intersect near the subject, in accordance with zooming or focusing, a natural stereoscopic image of the subject can be captured. As a method for adjusting the convergence angle, there are a tilt method of rotating the entire imaging device, a mirror, or a prism, and a shift method of moving a lens or an image sensor in a direction substantially perpendicular to the optical axis. In the tilt method, the structure of the imaging device becomes large, but in the shift method, the structure of the imaging device can be made relatively small.

[0003] Patent Document 1 discloses an imaging device including a plurality of photographing means, which can sequentially capture images while changing the convergence angle (the angle formed by two lines of sight) by controlling one image blur correction means for each photographing means to obtain a plurality of images.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The imaging device disclosed in Patent Document 1 performs both image blur correction and convergence angle adjustment by shifting the image blur correction means of either the lens or the image sensor. For this reason, at least one of the image blur correction amount or the convergence angle adjustment amount may be insufficient, and it may not be possible to obtain a good stereoscopic photographed image with suppressed image blur.

[0006] Therefore, an object of the present invention is to provide an optical device capable of obtaining a good stereoscopic captured image with reduced image blur.

Means for Solving the Problems

[0007] An optical device according to one aspect of the present invention includes a first anti-shake means, a second anti-shake means, and a control means for moving each of the first anti-shake means and the second anti-shake means in a direction perpendicular to the optical axis. The control means performs anti-shake using at least one of the first anti-shake means and the second anti-shake means, and adjusts the convergence angle using at least the other of the first anti-shake means and the second anti-shake means.

[0008] Other objects and features of the present invention will be described in the following embodiments.

Effects of the Invention

[0009] According to the present invention, it is possible to provide an optical device capable of obtaining a good stereoscopic captured image with reduced image blur.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0012] First, referring to FIG. 1, an imaging system (lens interchangeable camera system) 10a equipped with a binocular lens device will be described. FIG. 1 is a configuration diagram of the imaging system 10a. The imaging system 10a includes a camera body (imaging device) 200 and an interchangeable lens (binocular lens device) 100 detachably and communicably connected to the camera body 200. The interchangeable lens 100 and the camera body 200 communicate with each other via communication units 121 and 208 provided respectively thereon. Note that the interchangeable lens 100, the camera body 200, or the imaging system 10a may each be referred to as an optical device.

[0013] The interchangeable lens 100 has an imaging optical system (first optical system) 101 and an imaging optical system (second optical system) 108. The imaging optical systems 101 and 108 are two optical systems arranged in parallel with each other. The imaging optical systems 101 and 108 each include a zoom lens 102, 109, an aperture stop 103, 110, an anti-shake lens 104, 107, 111, 114, a focus lens 105, 112, and a prism 106, 113. The interchangeable lens 100 also has a zoom control unit 115, an aperture stop control unit 116, an anti-shake control unit (shifting means) 117, 119, a focus control unit 118, a lens microcomputer (lens microcontroller, control means) 120, and a storage unit 122. In each embodiment, prisms 106 and 113 are provided as optical members for changing the optical axes of the imaging optical systems 101 and 108 respectively, but it is not limited thereto, and other optical members such as a mirror or a lens may be used.

[0014] The zoom lenses 102 and 109 change the focal lengths of the imaging optical systems 101 and 108 (perform zooming) by moving in the optical axis direction (the arrow direction (horizontal direction) in FIG. 1) of the imaging optical systems 101 and 108. The zoom control unit 115 moves the zoom lenses 102 and 109 in response to an instruction from the lens microcomputer 120 that has acquired the positions (zoom positions) of the zoom lenses 102 and 109 detected using a position sensor such as a potentiometer (not shown). Note that the zoom lenses 102 and 109 and the zoom control unit 115 constitute zoom means for changing the zoom position.

[0015] The aperture stops 103 and 110 are provided with aperture blades for changing the aperture diameter in order to adjust the amount of light transmitted through the imaging optical systems 101 and 108. The aperture stop control unit 116 drives an actuator such as a stepping motor in accordance with an instruction from the lens microcomputer 120 that has acquired the aperture diameter detected using a sensor such as a photo interrupter (not shown), to change the aperture diameter of the aperture stops 103 and 110.

[0016] The anti-shake lenses 104, 107, 111, and 114 move in a direction perpendicular to the respective optical axes of the imaging optical systems 101 and 108 (the direction of the arrow in FIG. 1 (vertical direction)) to correct image blur caused by movement (camera shake) applied to the imaging system 10a or to adjust the convergence angle. The lens microcomputer 120 acquires the camera shake detected by a gyro sensor or an acceleration sensor (not shown). The anti-shake control units 117 and 119 drive an actuator such as a voice coil motor in accordance with an anti-shake instruction or a convergence angle adjustment instruction from the lens microcomputer 120 that has acquired the camera shake, to move the anti-shake lenses 104, 107, 111, and 114.

[0017] In each embodiment, the anti-shake lens 104 in the imaging optical system 101 and the anti-shake lens 111 in the imaging optical system 108 are provided separately, but the present invention is not limited to this, and one anti-shake lens may be shared by the imaging optical systems 101 and 108. Similarly, the anti-shake lens 107 in the imaging optical system 101 and the anti-shake lens 114 in the imaging optical system 108 are provided separately, but the present invention is not limited to this, and one anti-shake lens may be shared by the imaging optical systems 101 and 108. However, in order to adjust the convergence angle, it is necessary to move two corresponding anti-shake lenses in the imaging optical systems 101 and 108 in opposite directions to each other. Therefore, if the anti-shake lens is shared, the convergence angle cannot be adjusted using the anti-shake lens. For this reason, the anti-shake lenses used for adjusting the convergence angle are provided separately in each of the imaging optical systems 101 and 108.

[0018] The focus lenses 105 and 112 adjust the imaging positions of the imaging optical systems 101 and 108 by moving in the optical axis direction of the imaging optical systems 101 and 108. The lens microcomputer 120 acquires the positions (focus positions) of the focus lenses 105 and 112 detected using a position sensor such as an encoder (not shown). The focus control unit 118 drives an actuator such as a stepping motor in response to an instruction from the lens microcomputer 120 that has acquired the positions of the focus lenses 105 and 112, to move the focus lenses 105 and 112. Note that the focus lenses 105 and 112 and the focus control unit 118 constitute focus means for changing the focus position.

[0019] The storage unit 122 is a ROM (Read Only Memory), a RAM (Random Access Memory), or the like. The storage unit 122 stores optical information necessary for controlling the driving of the zoom lenses 102 and 109, the aperture stops 103 and 110, the vibration-proof lenses 104, 107, 111, and 114, and the focus lenses 105 and 112. The optical information is, for example, information regarding the drivable stroke amount of the vibration-proof lenses 104, 107, 111, and 114, and sensitivity required for image blur correction (vibration-proof) or convergence angle adjustment.

[0020] The camera body 200 includes an imaging element 201, an imaging element control unit (shifting means) 202, a signal processing unit 203, a recording processing unit 204, a display unit 205, an operation unit 206, a camera microcomputer (camera microcontroller, control means) 207, and a storage unit 209.

[0021] The imaging element 201 is a photoelectric conversion element such as a CMOS (Complementary Metal-Oxide-Semiconductor) sensor or a CCD (Charge Coupled Device) sensor. The imaging element 201 photoelectrically converts (images) a subject image (optical image) formed by each of the imaging optical systems 101 and 108.

[0022] The imaging element control unit 202 drives an actuator such as a voice coil motor to move the imaging element 201 in response to an instruction from the camera microcomputer 207 that has acquired camera shake detected by a gyro sensor or an acceleration sensor (not shown). Note that, instead of the anti-shake lenses 104 and 107 (111 and 114), image blur may be corrected or the convergence angle may be adjusted by moving the imaging element 201 in a direction perpendicular to the optical axis.

[0023] The signal processing unit 203 converts the analog imaging signal output from the imaging element 201 that has captured the subject image into a digital imaging signal. The signal processing unit 203 also performs various signal processes such as noise removal and color correction on the digital imaging signal to generate an image signal, a focus signal, a luminance signal, a color difference signal, and the like. The image signal output from the signal processing unit 203 is sent to the recording processing unit 204. The signal processing unit 203 generates still image data or moving image data from the image signal and records it on a recording medium (not shown).

[0024] The focus signal output from the signal processing unit 203 is input to the camera microcomputer 207. The focus signal indicates, for example, the defocus amount in focus detection using the phase difference detection method. The camera microcomputer 207 converts the defocus amount into a drive amount for the focus lenses 105 and 112, and transmits a focus command including the drive amount for the focus lenses 105 and 112 to the lens microcomputer 120. The lens microcomputer 120 issues an instruction to the focus control unit 118 based on the received focus command to drive the focus lenses 105 and 112. Thereby, auto focus (AF) is performed.

[0025] The luminance signal output from the signal processing unit 203 is input to the camera microcomputer 207. The camera microcomputer 207 calculates the aperture value (F value), shutter speed, and the sensitivity of the imaging device 201 so that the brightness evaluation value obtained from the luminance signal is appropriate. The camera microcomputer 207 transmits an aperture command including the calculated aperture value to the lens microcomputer 120. The lens microcomputer 120 gives an instruction to the aperture diaphragm control unit 116 based on the received aperture command to drive the aperture diaphragms 103 and 110. The camera microcomputer 207 sets the calculated shutter speed and the sensitivity of the imaging device 201. Thereby, automatic exposure (AE) is performed.

[0026] The operation unit 206 includes an imaging instruction switch (not shown) and switches for setting imaging conditions and the like. The camera microcomputer 207 performs various controls according to the input from the operation unit 206.

[0027] Next, with reference to FIG. 2, an imaging system (lens interchangeable camera system) 10b including two single-lens devices will be described. FIG. 2 is a configuration diagram of the imaging system 10b. The imaging system 10b includes a camera body (imaging device) 600, an adapter device 500, and interchangeable lenses (single-lens devices) 300 and 400. The adapter device 500 is detachably and communicably connected to the camera body 600. The interchangeable lenses 300 and 400 are each detachably and communicably connected to the adapter device 500. The adapter device 500 and the camera body 600 communicate with each other via communication units 508 and 608 provided respectively. The interchangeable lenses 300 and 400 and the adapter device 500 communicate with each other via communication units 311, 411 and 508 provided respectively. Note that the interchangeable lenses 300 and 400, the adapter device 500, the camera body 600, or the imaging system 10b may each be referred to as an optical device.

[0028] The interchangeable lens 300 has an imaging optical system (first optical system) 301. Each of the imaging optical systems 301 includes a zoom lens 302, an aperture stop 303, an anti-shake lens 304, and a focus lens 305, and is arranged in parallel with the imaging optical system (second optical system) 401 of the interchangeable lens 400. The interchangeable lens 300 also has a zoom control unit 306, an aperture stop control unit 307, an anti-shake control unit (shifting means) 308, a focus control unit 309, a lens microcomputer (lens microcomputer, control means) 310, and a storage unit 312.

[0029] The zoom lens 302 changes (performs zooming) the focal length of the imaging optical system 301 by moving in the optical axis direction of the imaging optical system 301 (the arrow direction (horizontal direction) in FIG. 2). The zoom control unit 306 moves the zoom lens 302 in response to an instruction from the lens microcomputer 310 that has acquired the position (zoom position) of the zoom lens 302 detected using a position sensor such as a potentiometer (not shown). Note that the zoom lens 302 and the zoom control unit 306 constitute zoom means for changing the zoom position.

[0030] The aperture stop 303 includes aperture blades that change the aperture diameter in order to adjust the amount of light transmitted through the imaging optical system 301. The aperture stop control unit 307 drives an actuator such as a stepping motor to change the aperture diameter of the aperture stop 303 in response to an instruction from the lens microcomputer 310 that has acquired the aperture diameter detected using a sensor such as a photo interrupter (not shown).

[0031] The anti-shake lens 304 moves in a direction perpendicular to the optical axis of the imaging optical system 301 (the arrow direction (vertical direction) in FIG. 2) to correct image blur caused by movement (camera shake) applied to the imaging system 10b or to adjust the convergence angle. The lens microcomputer 310 acquires the camera shake detected by a gyro sensor or an acceleration sensor (not shown). The anti-shake control unit 308 drives an actuator such as a voice coil motor to move the anti-shake lens 304 in response to an anti-shake instruction or a convergence angle adjustment instruction from the lens microcomputer 310 that has acquired the camera shake.

[0032] The focus lens 305 adjusts the imaging position of the imaging optical system 301 by moving in the optical axis direction of the imaging optical system 301. The focus control unit 309 drives an actuator such as a stepping motor to move the focus lens 305 in response to an instruction from the lens microcomputer 310 that has acquired the position of the focus lens 305 detected using a position sensor such as an encoder (not shown). Note that the focus lens 305 and the focus control unit 309 constitute focus means for changing the focus position.

[0033] The storage unit 312 includes a ROM or a RAM or the like. The storage unit 312 stores optical information necessary for controlling the driving of the zoom lens 302, the aperture stop 303, the anti-shake lens 304, and the focus lens 305. The optical information is, for example, information regarding the drivable stroke amount of the anti-shake lens 304 and sensitivity or the like necessary for image blur correction (anti-shake) or convergence angle adjustment.

[0034] Note that since the configuration of the interchangeable lens 400 is the same as that of the interchangeable lens 300, the description thereof is omitted.

[0035] The adapter device 500 includes an imaging optical system (first optical system) 501 and an imaging optical system (second optical system) 504. The imaging optical systems 501 and 504 each include mirrors 502 and 505 and an anti-shake lens 503. The adapter device 500 also includes an anti-shake control unit (shift means) 506, an adapter microcomputer (adapter microcontroller, control means) 507, and a storage unit 509. Note that in each embodiment, the mirrors 502 and 505 are used as optical members for changing the optical axis, but the present invention is not limited thereto, and other optical members such as prisms or lenses may be used.

[0036] The anti-vibration lens 503 corrects image blur caused by the movement (camera shake) applied to the imaging system 10b by moving in a direction perpendicular to the optical axes of the imaging optical systems 501 and 504 (the direction of the arrow in FIG. 2 (vertical direction)). The anti-vibration control unit 506 drives an actuator such as a voice coil motor in response to an anti-vibration instruction from the adapter microcomputer 507 that has acquired the camera shake detected by a gyro sensor or an acceleration sensor (not shown) to move the anti-vibration lens 503.

[0037] In each embodiment, although the anti-vibration lens 503 is shared by the imaging optical systems 501 and 504, it may be provided separately for each imaging optical system. By making the anti-vibration lens separate from the imaging optical systems 501 and 504 (each of the imaging optical systems 501 and 504 having an anti-vibration lens), the two anti-vibration lenses in the imaging optical systems 101 and 108 can be moved in opposite directions to each other. With this configuration, the convergence angle can be adjusted in response to an instruction for adjusting the convergence angle from the adapter microcomputer 507.

[0038] Also, in each embodiment, the adapter device 500 may perform different controls regarding at least one of the adjustment of the convergence angle and anti-vibration according to whether the interchangeable lenses 300 and 400 have at least one of the first anti-vibration means and the second anti-vibration means. For example, the adapter device 500 may be configured to perform the adjustment of the convergence angle and anti-vibration using the anti-vibration lens 503 when the interchangeable lenses 300 and 400 do not have the first anti-vibration means.

[0039] The camera body 600 includes an imaging element 601, an imaging element control unit (shifting means) 602, a signal processing unit 603, a recording processing unit 604, a display unit 605, an operation unit 606, a camera microcomputer (camera microcontroller, control means) 607, and a storage unit 609.

[0040] The imaging element 601 is a photoelectric conversion element having a CMOS sensor, a CCD sensor, or the like, and photoelectrically converts (images) the subject images (optical images) formed by the imaging optical systems (first optical systems) 301 and 501 and the imaging optical systems (second optical systems) 401 and 504, respectively.

[0041] The imaging element control unit 602 drives an actuator such as a voice coil motor to move the imaging element 601 in response to an instruction from the camera microcomputer 607 that has acquired camera shake detected by a gyro sensor or an acceleration sensor (not shown). Note that instead of the anti-shake lenses 304(404), 503, the imaging element 601 may be moved in a direction perpendicular to the optical axis to correct image blur or adjust the convergence angle.

[0042] The signal processing unit 603 converts the analog imaging signal output from the imaging element 601 that has captured the subject image into a digital imaging signal. The signal processing unit 603 performs various signal processes such as noise removal and color correction on the digital imaging signal to generate an image signal, a focus signal, a luminance signal, a color difference signal, and the like. The image signal output from the signal processing unit 603 is sent to the recording processing unit 604. The signal processing unit 603 generates still image data or moving image data from the image signal and records it on a recording medium (not shown).

[0043] The focus signal output from the signal processing unit 603 is input to the camera microcomputer 607. The focus signal indicates, for example, the defocus amount in focus detection by the phase difference detection method. The camera microcomputer 607 converts the defocus amount into the drive amount of the focus lenses 305, 405, and transmits a focus command including the drive amount to the lens microcomputers 310, 410. The lens microcomputers 310, 410 issue an instruction to the focus control units 309, 409 based on the received focus command to drive the focus lenses 305, 405. Thereby, auto focus (AF) is performed.

[0044] The luminance signal output from the signal processing unit 603 is input to the camera microcomputer 607. The camera microcomputer 607 calculates the aperture value, shutter speed, and the sensitivity of the imaging device 601 so that the brightness evaluation value obtained from the luminance signal is appropriate. The camera microcomputer 607 transmits an aperture command including the calculated aperture value to the lens microcomputers 310 and 410. The lens microcomputers 310 and 410 issue instructions to the aperture control units 307 and 407 based on the received aperture command to drive the aperture stops 303 and 403. The camera microcomputer 607 sets the calculated shutter speed and the sensitivity of the imaging device 601. Thereby, automatic exposure (AE) is performed.

[0045] The operation unit 606 includes an imaging instruction switch (not shown) and switches for setting imaging conditions and the like. The camera microcomputer 607 performs various controls in response to the input from the operation unit 606.

[0046] (Embodiment 1) Next, with reference to FIG. 3, the convergence angle adjustment process and the anti-shake process (image blur correction process) in Embodiment 1 will be described. FIG. 3 is a flowchart showing the convergence angle adjustment process and the anti-shake process in this embodiment. The flowchart of FIG. 3 assumes a configuration in which two anti-shake lenses (shift lenses) are provided as two anti-shake means (first anti-shake means, second anti-shake means) in the same imaging optical system, and the imaging device 201 does not function as an image blur correction means (anti-shake means). The flowchart of FIG. 3 shows a method of the convergence angle adjustment process and the image blur correction process executed by the camera microcomputer 207 according to a program.

[0047] First, in step S100, the camera microcomputer 207 acquires the current focus position and zoom position. Subsequently, in step S101, the camera microcomputer 207 calculates the convergence angle that requires adjustment due to a change in at least one of the zoom position or the focus position. Also, the camera microcomputer 207 designates which of the anti-vibration lens 104(111) as the first anti-vibration means or the anti-vibration lens 107(114) as the second anti-vibration means is mainly used to adjust the convergence angle. Then, the camera microcomputer 207 calculates the driving amount (convergence angle adjustment amount) required for adjusting the convergence angle using the designated anti-vibration lens based on the sensitivity of the convergence angle adjustment. Subsequently, in step S102, the camera microcomputer 207 determines whether the driving amount (convergence angle adjustment amount) calculated in step S101 is smaller than the driving margin. If the adjustment amount of the convergence angle is smaller than the driving margin, it proceeds to step S103. On the other hand, if the adjustment amount of the convergence angle is larger than the driving margin, it proceeds to step S109.

[0048] In step S103, the lens microcomputer 120 uses the anti-vibration control unit 117 or the anti-vibration control unit 119 to adjust the convergence angle solely with the anti-vibration lens (one of the anti-vibration lenses 104, 107, and one of the anti-vibration lenses 111, 114) designated in step S101.

[0049] Subsequently, in step S104, the camera microcomputer 207 designates which of the anti-vibration lens 104(111) as the first anti-vibration means or the anti-vibration lens 107(114) as the second anti-vibration means is mainly used for anti-vibration. Then, the camera microcomputer 207 calculates the driving amount (anti-vibration amount) required for anti-vibration using the designated anti-vibration lens based on the anti-vibration sensitivity. Subsequently, in step S105, the camera microcomputer 207 determines whether the driving amount (anti-vibration amount) calculated in step S104 is smaller than the driving margin. If the anti-vibration amount is smaller than the driving margin, it proceeds to step S106. On the other hand, if the anti-vibration amount is larger than the driving margin, it proceeds to step S107.

[0050] In step S106, the lens microcomputer 120 performs shake correction independently using the shake correction unit 117 or the shake correction unit 119 with the shake correction lens (one of the shake correction lenses 104 and 107 and one of the shake correction lenses 111 and 114) specified in step S104.

[0051] In step S107, the camera microcomputer 207 calculates (determines) a shake correction ratio (second ratio) for performing shake correction cooperatively (sharing) with the two shake correction lenses 104 (111) and 107 (114). Preferably, the camera microcomputer 207 changes the second ratio according to at least one of the focus position and the zoom position. Subsequently, in step S108, the lens microcomputer 120 performs shake correction cooperatively with the two shake correction lenses 104 (111) and 107 (114) using the shake correction units 117 and 119 based on the shake correction ratio calculated in step S107.

[0052] In step S109, the camera microcomputer 207 calculates (determines) an adjustment ratio (first ratio) of the convergence angle for adjusting the convergence angle cooperatively (sharing) with the two shake correction lenses 104 (111) and 107 (114). Preferably, the camera microcomputer 207 changes the first ratio according to at least one of the focus position and the zoom position. Subsequently, in step S110, the lens microcomputer 120 adjusts the convergence angle cooperatively with the two shake correction lenses 104 (111) and 107 (114) using the shake correction units 117 and 119 based on the adjustment ratio of the convergence angle calculated in step S109.

[0053] Subsequently, in step S111, the camera microcomputer 207 calculates the driving amount required for shake correction using the shake correction lens with a driving margin among the shake correction lenses 104 (111) or the shake correction lens 107 (114) based on the shake correction sensitivity. Subsequently, in step S112, the lens microcomputer 120 adjusts the convergence angle independently using the shake correction unit 117 or the shake correction unit 119 with the shake correction lens having a driving margin among the two shake correction lenses based on the driving amount (shake correction amount) calculated in step S111.

[0054] According to this embodiment, using two anti-vibration lenses provided in the same imaging optical system, convergence angle adjustment and anti-vibration (image blur correction) can be performed either cooperatively or independently. Therefore, according to this embodiment, a sufficient amount of image blur correction and a sufficient amount of convergence angle adjustment can be ensured respectively, and a good stereoscopic captured image with suppressed image blur can be obtained.

[0055] (Embodiment 2) Next, with reference to FIG. 4, the convergence angle adjustment process and the anti-vibration process (image blur correction process) in Embodiment 2 will be described. FIG. 4 is a flowchart showing the convergence angle adjustment process and the anti-vibration process in this embodiment. The flowchart of FIG. 4 is premised on a configuration in which one anti-vibration lens (shift lens) 104, 111 is provided as an anti-vibration means in the same imaging optical system, and the imaging element 201 functions as an anti-vibration means. The flowchart of FIG. 4 shows a method of convergence angle adjustment processing and image blur correction processing (anti-vibration processing) executed by the camera microcomputer 207 according to a program.

[0056] First, in step S200, the camera microcomputer 207 acquires the current focus position and zoom position. Subsequently, in step S201, the camera microcomputer 207 calculates the convergence angle that needs to be adjusted due to a change in at least one of the zoom position or the focus position. Then, the camera microcomputer 207 calculates the driving amount (convergence adjustment amount) of the anti-vibration lens when adjusting the convergence angle using the anti-vibration lens 104 (111) as the first anti-vibration means based on the sensitivity of the convergence angle adjustment. Subsequently, in step S202, the camera microcomputer 207 adjusts the convergence angle independently with the anti-vibration lens 104 (111) by the driving amount (convergence adjustment amount) calculated in step S101.

[0057] Subsequently, in step S203, the camera microcomputer 207 designates which of the image stabilizer lens 104(111) or the imaging device 201 mainly performs image stabilization, and calculates the driving amount (image stabilization amount) required for image stabilization based on the image stabilization sensitivity. Subsequently, in step S204, the camera microcomputer 207 determines whether the driving amount (image stabilization amount) calculated in step S203 is smaller than the driving margin amount. If the image stabilization amount is smaller than the driving margin amount, the process proceeds to step S205. On the other hand, if the image stabilization amount is larger than the driving margin amount, the process proceeds to step S206.

[0058] In step S205, the lens microcomputer 120 performs image stabilization alone with either the image stabilizer lens 104(111) or the imaging device 201 designated in step S203 using the image stabilization control unit 117 or the imaging device control unit 202.

[0059] In step S206, the camera microcomputer 207 calculates an image stabilization ratio for performing image stabilization cooperatively (sharing) with the image stabilizer lens 104(111) and the imaging device 201. Subsequently, in step S207, the lens microcomputer 120 performs image stabilization cooperatively with the image stabilizer lens 104(111) and the imaging device 201 using the image stabilization control unit 117 and the imaging device control unit 202 based on the image stabilization ratio calculated in step S206.

[0060] As described above, in each embodiment, the optical device has a first image stabilization means and a second image stabilization means. The first image stabilization means and the second image stabilization means are, for example, two optical elements among the image stabilizer lenses 104(111), 107(114), 304(404), 503, and the imaging devices 201(601). The control means (lens microcomputers 120, 310, 410, camera microcomputer 207, 607, adapter microcomputer 507) moves each of the first image stabilization means and the second image stabilization means in a direction perpendicular to the optical axis. The control means also performs image stabilization using at least one of the first image stabilization means and the second image stabilization means, and adjusts the convergence angle using at least the other of the first image stabilization means and the second image stabilization means. Preferably, the optical device has a first optical system and a second optical system arranged in parallel with the first optical system.

[0061] For example, both the first anti-vibration means and the second anti-vibration means are lenses in the lens device. That is, the first anti-vibration means is the first lens (anti-vibration lenses 104, 111) that constitutes a part of each of the first optical system and the second optical system, and the second anti-vibration means is the second lens (anti-vibration lenses 107, 114) that constitutes a part of each of the first optical system and the second optical system.

[0062] For example, the first anti-vibration means is a lens in the lens device, and the second anti-vibration means is a lens in the adapter device. That is, the first anti-vibration means is the first lens (anti-vibration lenses 304, 404) that constitutes a part of each of the first optical system and the second optical system, and the second anti-vibration means is the third lens (anti-vibration lens 503) of the adapter device.

[0063] For example, the first anti-vibration means is a lens in the lens device, and the second anti-vibration means is an imaging element. That is, the first anti-vibration means is the lens (anti-vibration lenses 104(111), 107(114), 304, 404) that constitutes a part of each of the first optical system and the second optical system, and the second anti-vibration means is the imaging element 201(601).

[0064] For example, the first anti-vibration means is a lens of the adapter device, and the second anti-vibration means is an imaging element. That is, the first anti-vibration means is the lens (anti-vibration lens 503) of the adapter device, and the second anti-vibration means is the imaging element 601.

[0065] According to this embodiment, it is possible to sufficiently ensure the image blur correction amount and the convergence angle adjustment amount respectively, and obtain a good stereoscopic photographed image with suppressed image blur.

[0066] (Other embodiments) 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 a computer of the system or device read and execute the program. Further, it can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

[0067] In each embodiment, at least two anti-vibration means of an anti-vibration lens and an imaging element are used for the same imaging optical system to perform convergence angle adjustment and cooperative or independent anti-vibration. Therefore, according to each embodiment, it is possible to provide an optical device, a control method of the optical device, and a program that can sufficiently secure an image blur correction amount and a convergence angle adjustment amount and obtain a good stereoscopic captured image with suppressed image blur.

[0068] The disclosure of each embodiment includes the following configurations and methods. (Configuration 1) A first anti-vibration means, A second anti-vibration means, and control means for moving each of the first anti-vibration means and the second anti-vibration means in a direction perpendicular to the optical axis, wherein the control means performs anti-vibration using at least one of the first anti-vibration means and the second anti-vibration means, and adjusts a convergence angle using at least the other of the first anti-vibration means and the second anti-vibration means. An optical device characterized by the above. (Configuration 2) A first optical system, and a second optical system arranged in parallel with the first optical system. The optical device according to Configuration 1, characterized by further comprising the second optical system. (Configuration 3) The first anti-vibration means is a first lens that constitutes a part of each of the first optical system and the second optical system, and the second anti-vibration means is a second lens that constitutes a part of each of the first optical system and the second optical system. The optical device according to Configuration 2, characterized by the above. (Configuration 4) The optical device includes a lens device having the first optical system and the second optical system, and an adapter device detachable between the lens device and the imaging device, the first anti-vibration means is a first lens that constitutes a part of each of the first optical system and the second optical system, The optical device according to Configuration 2, wherein the second anti-vibration means is a third lens provided in the adapter device. (Configuration 5) The optical device includes a lens device having the first optical system and the second optical system, and an imaging device to which the lens device is detachable. The first anti-vibration means is a lens that constitutes a part of each of the first optical system and the second optical system. The optical device according to Configuration 2, wherein the second anti-vibration means is an imaging element of the imaging device. (Configuration 6) The optical device includes a lens device having the first optical system and the second optical system, an imaging device, and an adapter device that is detachable between the lens device and the imaging device. The first anti-vibration means is a lens provided in the adapter device. The optical device according to Configuration 2, wherein the second anti-vibration means is an imaging element of the imaging device. (Configuration 7) The optical device further includes an optical member that changes the optical axis of each of the first optical system and the second optical system. The optical device according to any one of Configurations 2 to 6, wherein the optical member includes at least one of a prism, a mirror, and a lens. (Configuration 8) The optical device according to any one of Configurations 2 to 6, wherein the optical images formed by each of the first optical system and the second optical system are photoelectrically converted by one imaging element. (Configuration 9) The control means determines a first ratio for sharing the adjustment of the convergence angle by the first anti-vibration means and the second anti-vibration means. The optical device according to any one of Configurations 1 to 8, wherein the first anti-vibration means and the second anti-vibration means share the adjustment of the convergence angle at the first ratio. (Configuration 10) The control means determines a second ratio for sharing the anti-vibration by the first anti-vibration means and the second anti-vibration means. The first vibration isolation means and the second vibration isolation means perform vibration isolation in accordance with the second ratio and share the vibration isolation, which is the optical device according to any one of Configurations 1 to 9. (Configuration 11) The optical device further includes focus means for changing the focus position, wherein the control means changes the first ratio according to the focus position, which is the optical device according to Configuration 9. (Configuration 12) The optical device further includes focus means for changing the focus position, wherein the control means changes the second ratio according to the focus position, which is the optical device according to Configuration 10. (Configuration 13) The optical device further includes zoom means for changing the zoom position, wherein the control means changes the first ratio according to the zoom position, which is the optical device according to Configuration 9 or 11. (Configuration 14) The optical device further includes zoom means for changing the zoom position, wherein the control means changes the second ratio according to the zoom position, which is the optical device according to Configuration 10 or (END]] (Configuration 15) The optical device includes a lens device and a detachable adapter device between the lens device and the imaging device, wherein the adapter device controls at least one of adjustment of the convergence angle and vibration isolation differently according to whether the lens device has at least one of the first vibration isolation means and the second vibration isolation means, which is the optical device according to any one of Configurations 1 to 14. (Method 1) A step of performing vibration isolation by moving at least one of the first vibration isolation means and the second vibration isolation means in a direction perpendicular to the optical axis, and a step of adjusting the convergence angle by moving at least the other of the first vibration isolation means and the second vibration isolation means in a direction perpendicular to the optical axis, which is a control method for an optical device. (Configuration 16) A program characterized by causing a computer to execute the method for controlling an optical device described in Method 1.

[0069] As described above, the preferred embodiments of the present invention have been explained. However, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist thereof.

Explanation of Reference Numerals

[0070] 10a, 10b Imaging system (optical device) 100, 300, 400 Interchangeable lens (optical device) 101, 301, 501 Imaging optical system (first optical system) 104 Vibration-proof lens (first vibration-proof means) 107 Vibration-proof lens (first vibration-proof means, second vibration-proof means) 108, 401, 504 Imaging optical system (second optical system) 111 Vibration-proof lens (first vibration-proof means) 114 Vibration-proof lens (first vibration-proof means, second vibration-proof means) 120, 410 Lens microcomputer (control means) 200, 600 Camera body (optical device) 201, 601 Image sensor (second vibration-proof means) 207, 607 Camera microcomputer (control means) 304, 404 Vibration-proof lens (first vibration-proof means) 500 Adapter device (optical device) 503 Vibration-proof lens (first vibration-proof means, second vibration-proof means) 507 Adapter microcomputer (control means)

Claims

1. a first anti-vibration means, a second anti-vibration means, control means for moving each of the first anti-vibration means and the second anti-vibration means in a direction perpendicular to the optical axis, and the control means performs anti-vibration using at least one of the first anti-vibration means and the second anti-vibration means, and adjusts a convergence angle using at least the other of the first anti-vibration means and the second anti-vibration means. An optical device characterized by that.

2. a first optical system, and a second optical system arranged in parallel with the first optical system. The optical device according to claim 1, further comprising:

3. The first anti-vibration means is a first lens that constitutes a part of each of the first optical system and the second optical system, The second anti-vibration means is a second lens that constitutes a part of each of the first optical system and the second optical system. The optical device according to claim 2, characterized by that.

4. The optical device includes a lens device having the first optical system and the second optical system, and an adapter device detachable between the lens device and the imaging device, The first anti-vibration means is a first lens that constitutes a part of each of the first optical system and the second optical system, The second anti-vibration means is a third lens provided in the adapter device. The optical device according to claim 2, characterized by that.

5. The optical device includes a lens device having the first optical system and the second optical system, and an imaging device detachable from the lens device, The first anti-vibration means is a lens that constitutes a part of each of the first optical system and the second optical system, The second anti-vibration means is an imaging element of the imaging device. The optical device according to claim 2, characterized by that.

6. The optical device includes a lens device having the first optical system and the second optical system, an imaging device, and an adapter device detachable between the lens device and the imaging device, The first anti-vibration means is a lens provided in the adapter device, The second anti-vibration means is an imaging element of the imaging device. The optical device according to claim 2, characterized by that.

7. further comprising an optical member for changing the optical axis of each of the first optical system and the second optical system, and the optical member includes at least one of a prism, a mirror, and a lens. The optical device according to claim 2, characterized by that.

8. The optical device according to claim 2, wherein the optical images formed by each of the first optical system and the second optical system are photoelectrically converted by one image sensor.

9. The control means determines a first ratio for sharing the adjustment of the convergence angle by the first anti-vibration means and the second anti-vibration means, The optical device according to any one of claims 1 to 8, wherein the first anti-vibration means and the second anti-vibration means share the adjustment of the convergence angle at the first ratio.

10. The control means determines a second ratio for sharing the anti-vibration by the first anti-vibration means and the second anti-vibration means, The optical device according to any one of claims 1 to 8, wherein the first anti-vibration means and the second anti-vibration means share the anti-vibration at the second ratio.

11. The optical device further includes focus means for changing a focus position, The optical device according to claim 9, wherein the control means changes the first ratio according to the focus position.

12. The optical device further includes focus means for changing a focus position, The optical device according to claim 10, wherein the control means changes the second ratio according to the focus position.

13. The optical device further includes zoom means for changing a zoom position, The optical device according to claim 9, wherein the control means changes the first ratio according to the zoom position.

14. The optical device further includes zoom means for changing a zoom position, The optical device according to claim 10, wherein the control means changes the second ratio according to the zoom position.

15. The optical device includes a lens device and an adapter device detachable between the lens device and the imaging device, The optical device according to claim 1, wherein the adapter device controls at least one of the adjustment of the convergence angle and the anti-vibration differently according to whether the lens device has at least one of the first anti-vibration means and the second anti-vibration means.

16. A step of performing anti-vibration by moving at least one of the first anti-vibration means and the second anti-vibration means in a direction perpendicular to the optical axis, A method for controlling an optical device, comprising: a step of adjusting a convergence angle by moving at least the other of the first anti-vibration means and the second anti-vibration means in a direction perpendicular to the optical axis.

17. A program characterized by causing a computer to execute the method for controlling an optical device according to claim 16.

Images