Lens device, imaging device, method of operation of lens device, method of operation of imaging device, and storage medium

Abstract

A lens device of the present application is a lens device provided in a camera body having an image sensor, and includes: a lens that includes a shake correction lens that corrects shake of an image formed on the image sensor by light, and that forms incident light on the image sensor; a first drive mechanism that moves the shake correction lens in a direction that corrects the shake of the image by imparting power to the shake correction lens along a coordinate plane that intersects an optical axis of the lens; and a second drive mechanism that moves the shake correction lens in a direction that displaces the image by imparting power to the shake correction lens along the coordinate plane.

Description

Technical Field

[0001] The present invention relates to a lens device, a camera device, a method for operating the lens device, a method for operating the camera device, and a storage medium. Background Technology

[0002] Japanese Patent Application Publication No. 2006-171694 discloses a camera lens assembly image correction device. The image correction device includes a base, a first frame mounted on the base in a manner movable in a first direction, a second frame mounted on the first frame in a manner movable in a second direction perpendicular to the first direction and having an image sensor mounted on one side thereon, a linear motor disposed between the base and the first frame and moving the first frame in the first direction, and a voice coil motor moving the second frame in the second direction.

[0003] Japanese Patent Application Publication No. 2012-226205 discloses a drive device for image devices such as digital cameras to correct camera shake. The drive device includes a first component, a contact portion supported by the first component, a second component pressed against the contact portion and supported thereon, a first drive mechanism for moving the second component and the first component relative to each other in the direction along the support surface formed by the contact portion, and a second drive mechanism for displacing the contact portion relative to the first component in the pressing direction. The friction between the contact portion and the second component is reduced by vibrating the contact portion in the pressing direction using the second drive mechanism.

[0004] Japanese Patent Application Publication No. 2010-282028 discloses a lens unit for an imaging device. The lens unit includes a holding frame for holding the lens, a movement actuator for moving the holding frame connected to a movable member that moves linearly relative to a fixed member, a braking part for pressing the movable member and the fixed member against each other and braking the movable member relative to the fixed member when the movement actuator does not generate a driving force, and a braking part actuator for canceling the pressing force between the movable member and the fixed member when the movement actuator generates a driving force. Summary of the Invention

[0005] As an example, one embodiment of the technology of the present invention provides a lens device, an imaging device, a method of operating the lens device, a method of operating the imaging device, and a storage medium that can perform image jitter correction and image displacement with good accuracy compared to the case where the jitter correction drive mechanism moves the jitter correction lens to correct image jitter and causes image displacement.

[0006] means for solving technical problems

[0007] The first aspect of the present invention relates to a lens device disposed in a camera device body having an image sensor. The lens device comprises: a lens, including a jitter correction lens for correcting jitter in an image obtained by image formation of light on the image sensor, and causing incident light to form an image on the image sensor; a first drive mechanism for moving the jitter correction lens in the direction of correcting image jitter by applying power to a coordinate plane intersecting the optical axis of the lens; and a second drive mechanism for moving the jitter correction lens in the direction of image displacement by applying power to the jitter correction lens along the coordinate plane.

[0008] The second aspect of the present invention is the lens device of the first aspect, which includes: a processor; and a memory connected to or built into the processor. The processor performs the following processing: controlling the first drive mechanism to move the jitter correction lens in the direction of jitter correction of the image; and controlling the second drive mechanism to move the jitter correction lens in the direction of image displacement.

[0009] The third aspect of the present invention relates to the lens device of the second aspect, wherein the second driving mechanism moves the jitter correction lens along the direction in which the first driving mechanism moves the jitter correction lens; when the second driving mechanism moves the jitter correction lens in the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the amount of movement of the jitter correction lens based on the first driving mechanism plus the amount of movement of the jitter correction lens based on the second driving mechanism; when the second driving mechanism moves the jitter correction lens in the direction opposite to the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the amount of movement of the jitter correction lens based on the first driving mechanism minus the amount of movement of the jitter correction lens based on the second driving mechanism.

[0010] The fourth aspect of the technology of the present invention is the lens device involved in the second or third aspect, wherein the control of the first drive mechanism is based on feedback control of the jitter amount of the camera device having the lens device and the camera device body, and the control of the second drive mechanism is based on sequence control of a pre-defined displacement order.

[0011] The fifth aspect of the present invention is a lens device according to any one of the second to fourth aspects, wherein the processor controls the second drive mechanism to move the jitter correction lens in the direction of image displacement based on the frame-by-frame imaging of the image sensor.

[0012] The sixth aspect of the present invention is a lens device according to any one of the second to fifth aspects, wherein the processor controls the second drive mechanism to move the jitter correction lens to a position where the image is displaced by a distance greater than or less than the pixel pitch of the image sensor.

[0013] The seventh aspect of the present invention relates to a lens device according to any one of the second to sixth aspects, wherein the coordinate plane is defined by a first direction and a second direction intersecting the first direction, the second drive mechanism has a third actuator and a fourth actuator, the third actuator moves the jitter correction lens by applying power to the jitter correction lens along the first direction, the fourth actuator moves the jitter correction lens by applying power to the jitter correction lens along the second direction, and the processor selectively controls the second drive mechanism to switch between the presence or absence of power from the third actuator and the presence or absence of power from the fourth actuator.

[0014] The eighth aspect of the present invention relates to a lens device according to any one of the first to seventh aspects, wherein the coordinate plane is defined by a first direction and a second direction intersecting the first direction, the second drive mechanism has a third actuator and a fourth actuator, the third actuator moves the jitter correction lens by applying power to the jitter correction lens along the first direction, and the fourth actuator moves the jitter correction lens by applying power to the jitter correction lens along the second direction.

[0015] The ninth aspect of the present invention is a lens device according to any one of the first to eighth aspects, comprising: a holding member for holding a jitter correction lens; a first support member for supporting the holding member so as to be movable along a coordinate plane; and a second support member for supporting the first support member so as to be movable along a coordinate plane, a first drive mechanism disposed between the holding member and the first support member, and a second drive mechanism disposed between the first support member and the second support member.

[0016] The tenth aspect of the present invention is a lens device according to any one of the first to ninth aspects, comprising: a holding member for holding a jitter correction lens; a first support member for supporting the holding member so as to be movable along a coordinate plane; and a second support member for supporting the first support member so as to be movable along a coordinate plane, a first drive mechanism disposed between the holding member and the first support member, and a second drive mechanism disposed between the first support member and the second support member.

[0017] The eleventh aspect of the present invention is the lens device according to the tenth aspect, wherein the holding member is supported on the first supporting member in such a way that it is rotatable about an axis member extending along the optical axis.

[0018] The 12th aspect of the present invention is a lens device according to any one of the 1st to 11th aspects, wherein the first drive mechanism has a voice coil motor and the second drive mechanism has a piezoelectric element.

[0019] The 13th aspect of the present invention is the lens device of the 12th aspect, wherein the second drive mechanism has an elastic member disposed at a position opposite to the piezoelectric element.

[0020] The 14th aspect of the present invention relates to the lens device of the 9th aspect, wherein the coordinate plane is defined by a first direction and a second direction intersecting the first direction, and the first drive mechanism has: a first actuator disposed between the holding member and the first support member, generating power in the first direction; and a second actuator disposed between the holding member and the first support member, generating power in the second direction; the second drive mechanism has: a third actuator disposed between the first support member and the second support member, generating power in the first direction; and a fourth actuator disposed between the first support member and the second support member, generating power in the second direction.

[0021] The 15th aspect of the present invention is the lens device according to the 10th aspect, wherein the coordinate plane is defined by a first direction and a second direction intersecting the first direction, and the first drive mechanism has: a first actuator disposed between a first support member and a second support member, generating power in the first direction; and a second actuator disposed between the first support member and the second support member, generating power in the second direction; the second drive mechanism has: a third actuator disposed between a holding member and a first support member, generating power in the first direction; and a fourth actuator disposed between the holding member and the first support member, generating power in the second direction.

[0022] The 16th aspect of the present invention is the lens device according to the 10th aspect, wherein the coordinate plane is defined by a first direction and a second direction intersecting the first direction, the first drive mechanism has: a first actuator disposed between a first support member and a second support member, generating power in the first direction; and a second actuator disposed between the first support member and the second support member, generating power in the second direction, the second drive mechanism has a third actuator disposed between a holding member and a first support member, generating power in the combined direction of the first direction and the second direction.

[0023] The 17th aspect of the present invention is a lens device according to any one of the 1st to 16th aspects, which includes a filter disposed at a position closer to the subject than the image sensor, and allows near-infrared light contained in the light to be transmitted.

[0024] The 18th aspect of the present invention relates to a camera device comprising: a processor; memory connected to or built into the processor; an image sensor; a lens including a jitter correction lens for correcting jitter in an image obtained by image formation of light on the image sensor, and for image formation of incident light on the image sensor; a first drive mechanism for moving the jitter correction lens in the direction of correcting image jitter by applying power to a coordinate plane intersecting the optical axis of the lens; and a second drive mechanism for moving the jitter correction lens in the direction of image displacement by applying power to the jitter correction lens along a coordinate plane.

[0025] The 19th aspect of the present invention is the imaging device of the 18th aspect, wherein the processor performs the following processing: controls the second drive mechanism to move the jitter correction lens toward a position where the image is displaced by a distance greater than or less than the pixel pitch of the image sensor; causes the image sensor to capture an image based on the displacement of the image; and synthesizes an image of multiple frames obtained by capturing the image.

[0026] The 20th aspect of the present invention relates to a method of operating a lens device, the lens device comprising: a lens, including a jitter correction lens for correcting jitter in an image obtained by image formation of light on an image sensor, and for forming an image on the image sensor by incident light; a first drive mechanism for moving the jitter correction lens in a direction of correcting image jitter by applying power to a coordinate plane intersecting the optical axis of the lens; and a second drive mechanism for moving the jitter correction lens in a direction of image displacement by applying power to the jitter correction lens in a coordinate plane. The method of operating the lens device includes the following steps: controlling the first drive mechanism to move the jitter correction lens in the direction of correcting image jitter; and controlling the second drive mechanism to move the jitter correction lens in the direction of image displacement.

[0027] The 21st aspect of the present invention relates to an operation method of a camera device, the camera device comprising: an image sensor; a lens including a jitter correction lens for correcting jitter in an image obtained by image formation of light on the image sensor, and for image formation of incident light on the image sensor; a first drive mechanism for moving the jitter correction lens in a direction of correcting image jitter by applying power to a coordinate plane intersecting the optical axis of the lens; and a second drive mechanism for moving the jitter correction lens in a direction of image displacement by applying power to the jitter correction lens along a coordinate plane. The operation method of the camera device includes the following steps: controlling the first drive mechanism to move the jitter correction lens in the direction of correcting image jitter; and controlling the second drive mechanism to move the jitter correction lens in the direction of image displacement.

[0028] The 22nd aspect of the present invention is a storage medium storing a program for executing processing by a computer applicable to a lens device. The lens device includes: a lens comprising a jitter correction lens for correcting jitter in an image obtained by image formation of corrective light on an image sensor, and for forming an image on the image sensor by incident light; a first drive mechanism for moving the jitter correction lens in a direction of correcting image jitter by applying power to a coordinate plane intersecting the optical axis of the lens; and a second drive mechanism for moving the jitter correction lens in a direction of image displacement by applying power to the jitter correction lens along a coordinate plane. The processing includes the steps of: controlling the first drive mechanism to move the jitter correction lens in the direction of correcting image jitter; and controlling the second drive mechanism to move the jitter correction lens in the direction of image displacement.

[0029] The 23rd aspect of the present invention relates to a storage medium storing a program for executing processing by a computer applicable to an imaging device, the imaging device comprising: an image sensor; a lens including a jitter correction lens for correcting jitter in an image obtained by image formation of corrective light on the image sensor, and for image formation of incident light on the image sensor; a first drive mechanism for moving the jitter correction lens in a direction of correcting image jitter by applying power to a coordinate plane intersecting the optical axis of the lens; and a second drive mechanism for moving the jitter correction lens in a direction of image displacement by applying power to the jitter correction lens along a coordinate plane, the processing comprising the steps of: controlling the first drive mechanism to move the jitter correction lens in the direction of correcting image jitter; and controlling the second drive mechanism to move the jitter correction lens in the direction of image displacement. Attached Figure Description

[0030] Figure 1 This is a perspective view showing an example of the structure of the monitoring system according to the first embodiment.

[0031] Figure 2 This is a side view showing an example of the structure of the optical system of the surveillance camera according to the first embodiment.

[0032] Figure 3 This is a perspective view showing an example of the structure of the filter unit and image sensor according to the first embodiment.

[0033] Figure 4 This is a front view showing an example of the structure of the main parts of the image sensor according to the first embodiment.

[0034] Figure 5 This is a block diagram illustrating an example of the structure of the main body of the surveillance camera according to the first embodiment.

[0035] Figure 6This is a block diagram illustrating an example of the structure of the lens device according to the first embodiment.

[0036] Figure 7 This is an exploded perspective view showing an example of the structure of the jitter correction / displacement drive mechanism according to the first embodiment.

[0037] Figure 8 This is a front view showing an example of the structure of the jitter correction / displacement drive mechanism according to the first embodiment.

[0038] Figure 9 This is a block diagram illustrating an example of the functional structure of the CPU in the lens device according to the first embodiment.

[0039] Figure 10 This is a block diagram illustrating an example of the front section of a structure for image jitter correction in a surveillance camera according to the first embodiment.

[0040] Figure 11 This is a block diagram illustrating an example of the rear section of the structure for image jitter correction in the surveillance camera according to the first embodiment.

[0041] Figure 12 This is a block diagram illustrating an example of the front section of a structure for image displacement in a surveillance camera according to the first embodiment.

[0042] Figure 13 This is a block diagram illustrating an example of the rear section of a structure for image displacement in a surveillance camera according to the first embodiment.

[0043] Figure 14 This is a block diagram illustrating a first example of the structure in a surveillance camera according to the first embodiment for obtaining a composite image.

[0044] Figure 15 This is a block diagram illustrating a second example of the structure in a surveillance camera according to the first embodiment for obtaining a composite image.

[0045] Figure 16 This is a block diagram illustrating a third example of the structure in a surveillance camera according to the first embodiment for obtaining a composite image.

[0046] Figure 17 This is a block diagram illustrating a first working example of performing image jitter correction and image displacement in the lens device according to the first embodiment.

[0047] Figure 18 This is a block diagram illustrating a second working example of performing image jitter correction and image displacement in the lens device according to the first embodiment.

[0048] Figure 19 This is a block diagram illustrating a third working example of performing image jitter correction and image displacement in the lens device according to the first embodiment.

[0049] Figure 20 This is a block diagram illustrating a fourth working example in which image jitter correction and image displacement are performed in the lens device according to the first embodiment.

[0050] Figure 21 This is an explanatory diagram illustrating a first example of the operation of the shake correction lens in the lens device according to the first embodiment.

[0051] Figure 22 This is an explanatory diagram illustrating a second example of the operation of the shake correction lens in the lens device according to the first embodiment.

[0052] Figure 23 This is an explanatory diagram illustrating a third example of the operation of the shake correction lens in the lens device according to the first embodiment.

[0053] Figure 24 This is a flowchart illustrating an example of the jitter correction process in the jitter correction / displacement processing according to the first embodiment.

[0054] Figure 25 This is a flowchart illustrating an example of the displacement processing flow in the jitter correction / displacement processing according to the first embodiment.

[0055] Figure 26 This is an exploded perspective view showing an example of the structure of the jitter correction / displacement drive mechanism according to the second embodiment.

[0056] Figure 27 This is a front view showing an example of the structure of the jitter correction / displacement drive mechanism according to the second embodiment.

[0057] Figure 28 This is an exploded perspective view showing an example of the structure of the jitter correction / displacement drive mechanism according to the third embodiment.

[0058] Figure 29 This is a front view showing an example of the structure of the jitter correction / displacement drive mechanism according to the third embodiment.

[0059] Figure 30 This is a side view illustrating an example of the structure of the optical system of a surveillance camera involved in a variation. Detailed Implementation

[0060] Hereinafter, an example of an implementation of the lens device, camera device, lens device operation method, camera device operation method and procedure related to the present invention will be described with reference to the accompanying drawings.

[0061] First, let me explain the terms used in the following description.

[0062] CPU stands for Central Processing Unit. GPU stands for Graphics Processing Unit. NVM stands for Non-Volatile Memory. RAM stands for Random Access Memory. IC stands for Integrated Circuit. ASIC stands for Application Specific Integrated Circuit. PLD stands for Programmable Logic Device. FPGA stands for Field-Programmable Gate Array. SoC stands for System-on-a-Chip. SSD stands for Solid State Drive. HDD stands for Hard Disk Drive. EEPROM stands for Electrically Erasable and Programmable Read Only Memory. SRAM stands for Static Random Access Memory. VCM stands for Voice Coil Motor. I / F stands for Interface. UI stands for User Interface. USB stands for Universal Serial Bus. CMOS stands for Complementary Metal Oxide Semiconductor. CCD stands for Charge Coupled Device. LAN stands for Local Area Network. WAN stands for Wide Area Network. BPF stands for Bandpass Filter. Ir stands for Infrared Rays.

[0063] In this specification, "perpendicular" means perpendicular in the sense of a degree of error, other than perfect perpendicularity, that is generally permissible in the technical field to which the present invention pertains and does not violate the technical spirit of the present invention. In this specification, "horizontal" means horizontal in the sense of a degree of error, other than perfect horizontality, that is generally permissible in the technical field to which the present invention pertains and does not violate the technical spirit of the present invention. In this specification, "orthogonal" means orthogonal in the sense of a degree of error, other than perfect orthogonality, that is generally permissible in the technical field to which the present invention pertains and does not violate the technical spirit of the present invention. In this specification, "consistent" means consistent in the sense of a degree of error, other than perfect consistency, that is generally permissible in the technical field to which the present invention pertains and does not violate the technical spirit of the present invention. In this specification, "equally spaced" means equally spaced in the sense of a degree of error, other than perfect equally spaced, that is generally permissible in the technical field to which the present invention pertains and does not violate the technical spirit of the present invention.

[0064] [First Implementation]

[0065] First, the first embodiment will be described.

[0066] (Monitoring system)

[0067] As an example, such as Figure 1 As shown, the monitoring system S includes a monitoring camera 10 and a management device 11. The monitoring camera 10 is an example of the "camera device" involved in the technology of this invention.

[0068] The surveillance camera 10 is installed on a pillar or wall, indoors or outdoors, to capture images of the monitored object, generating dynamic images. The dynamic images include multiple frames obtained through the capture. The surveillance camera 10 transmits the captured dynamic images to the management device 11 via the communication line 12. The management device 11 receives the dynamic images transmitted by the surveillance camera 10 and displays the received dynamic images on the display 13 or stores them in the storage device 14.

[0069] in addition, Figure 1 The X-axis corresponds to the pitch axis of the surveillance camera 10, the Y-axis corresponds to the yaw axis of the surveillance camera 10, and the Z-axis corresponds to the roll axis of the surveillance camera 10. Hereinafter, the direction along the X-axis will be referred to as the X-axis direction, the direction along the Y-axis as the Y-axis direction, and the direction along the Z-axis as the Z-axis direction. The X-axis direction, Y-axis direction, and Z-axis direction are orthogonal to each other.

[0070] (Surveillance camera)

[0071] As an example, such as Figure 2 As shown, the surveillance camera 10 includes a surveillance camera body 20 and a lens assembly 70. The surveillance camera body 20 is an example of a "camera device body" according to the technology of this invention. The surveillance camera body 20 has a lens mount 22. The lens assembly 70 is separate from the surveillance camera body 20 and is detachably mounted on the lens mount 22. The lens assembly 70 is disposed on the surveillance camera body 20 by being mounted on the lens mount 22.

[0072] The main body 20 of the surveillance camera is equipped with an image sensor 24. The image sensor 24 is, for example, a CMOS image sensor, which performs photoelectric conversion on the received light and outputs an electrical signal corresponding to the received light. CMOS image sensor is just one example; image sensor 24 can also be an image sensor with a different operating mode than CMOS image sensor, such as a CCD image sensor.

[0073] Image sensor 24 has a light-receiving surface 24A. Imaging area light incident on lens assembly 70 is imaged onto light-receiving surface 24A by lens assembly 70. An image is obtained by imaging the imaging area light onto light-receiving surface 24A. Multiple photodiodes are arranged in a matrix on light-receiving surface 24A. Each photodiode receives imaging area light. Image sensor 24 captures an image of the imaging area by receiving the imaging area light. As an example, the multiple photodiodes include silicon photodiodes sensitive to visible light and indium gallium arsenide photodiodes sensitive to near-infrared light. Image sensor 24 captures each of the visible and near-infrared light contained in the imaging area light imaged on light-receiving surface 24A.

[0074] The lens assembly 70 has an optical axis OA. As an example, the optical axis OA is an axis passing through the center of the light-receiving surface 24A and perpendicular to the light-receiving surface 24A. The optical axis OA is parallel to the Z-axis. As an example, the lens assembly 70 includes an objective lens 72, a zoom lens 74, a shake-correcting lens 76, an aperture 78, a filter unit 80, and a main lens 82. The objective lens 72, zoom lens 74, shake-correcting lens 76, aperture 78, filter unit 80, and main lens 82 are arranged sequentially along the optical axis OA from the subject side to the image side. The optical axis OA is an axis passing through the center of each lens in the objective lens 72, zoom lens 74, shake-correcting lens 76, and main lens 82. The optical axis OA is also the optical axis of each lens in the objective lens 72, zoom lens 74, shake-correcting lens 76, and main lens 82, and is an example of the "optical axis of a lens" involved in the technology of this invention.

[0075] Light from the imaging area is incident on objective lens 72. Objective lens 72 guides the incident light from the imaging area to zoom lens 74. Zoom lens 74 is composed of a lens group having multiple lenses that can move along the optical axis OA, and is used for zooming the imaging area.

[0076] The jitter correction lens 76 is a lens used to correct jitter in the image obtained by the light from the imaging area being imaged on the image sensor 24 as described later, and is also a lens used to shift the image along the light-receiving surface 24A of the image sensor 24.

[0077] Aperture 78 has an opening 78A. Light from the imaging area, guided by zoom lens 74, passes through opening 78A. Aperture 78 is a movable aperture capable of changing the diameter of opening 78A. That is, the amount of light in the imaging area is changed by aperture 78.

[0078] The filter unit 80 is positioned closer to the subject than the image sensor 24. For example, the filter unit 80 is positioned between the aperture 78 and the main lens 82. Light from the imaging area, transmitted through the aperture 78, is incident on the filter unit 80. As will be described in detail later, the filter unit 80 includes multiple light-transmitting filters, and by switching the filters that allow light transmission, multiple wavelength bands of light contained in the imaging area light (for example, visible light and near-infrared light of different wavelength bands) are selectively transmitted.

[0079] The imaging area light transmitted through the filter unit 80 is incident on the main lens 82, and the imaging area light incident on the main lens 82 is imaged on the light-receiving surface 24A. Thus, the imaging area light incident on the lens assembly 70 is guided to the image sensor 24 by multiple lenses included in the lens assembly 70, and imaged on the light-receiving surface 24A of the image sensor 24. The shake correction lens 76 included in the multiple lenses in the lens assembly 70 is an example of a "shake correction lens" according to the technology of this invention. Furthermore, the multiple lenses including the objective lens 72, zoom lens 74, shake correction lens 76, aperture 78, filter unit 80, and main lens 82 are an example of a "lens" according to the technology of this invention. In addition, the arrangement order of the objective lens 72, zoom lens 74, shake correction lens 76, aperture 78, filter unit 80, and main lens 82 can also be other than the above-described arrangement order. Furthermore, each of the objective lens 72, zoom lens 74, image correction lens 76, and main lens 82 can be a single lens, or a lens group with multiple lenses. In addition to the objective lens 72, zoom lens 74, image correction lens 76, and main lens 82, the lens assembly 70 may also include other lenses.

[0080] (Filter unit)

[0081] As an example, such as Figure 3As shown, the filter unit 80 includes a circular plate 84. As an example, a plurality of filters, namely, a first BPF88A, a second BPF88B, a third BPF88C, and a fourth BPF88D, are arranged at equal intervals along the circumference of the circular plate 84. Hereinafter, unless otherwise specified, the first BPF88A, the second BPF88B, the third BPF88C, and the fourth BPF88D will be referred to as filters. Furthermore, unless otherwise specified, the first BPF88A, the second BPF88B, the third BPF88C, and the fourth BPF88D will be referred to as BPF88.

[0082] The filter unit 80, in a turntable manner, allows multiple filters to be selectively inserted and removed relative to the optical path (hereinafter referred to as the "optical path") of the imaging area light within the lens assembly 70. Specifically, the circular plate 84, along the circumferential direction (e.g., Figure 3 The arc-shaped dashed arrow (as shown) rotates, thereby causing the 1st BPF88A, the 2nd BPF88B, the 3rd BPF88C, and the 4th BPF88D to rotate relative to the optical path (in the direction of the arrow). Figure 3 In the example shown, the optical axis OA is selectively inserted and removed. Thus, the first BPF88A, the second BPF88B, the third BPF88C, and the fourth BPF88D transmit light of different wavelength bands.

[0083] If the filter is inserted into the optical path, the optical axis OA passes through the center of the filter, and the center of the filter inserted into the optical path coincides with the center of the light-receiving surface 24A. Figure 3 In the example shown, since the 1st BPF88A has been inserted into the optical path, the optical axis OA passes through the center of the 1st BPF88A, and the center of the 1st BPF88A coincides with the center of the light-receiving surface 24A.

[0084] 1BPF88A, 2BPF88B and 3BPF88C are filters that allow visible light to pass through, and 4BPF88D is a filter that allows near-infrared light to pass through.

[0085] The first BPF88A is a filter that allows only blue wavelengths of visible light, such as the 400nm to 490nm band, to pass through. The second BPF88B is a filter that allows only green wavelengths of visible light, such as the 490nm to 550nm band, to pass through. The third BPF88C is a filter that allows only red wavelengths of visible light, such as the 640nm to 770nm band, to pass through. The fourth BPF88D is, for example, a filter that allows only near-infrared light, such as the 1450nm to 1650nm band, to pass through. Furthermore, the frequency bands listed here include errors generally permissible within the technical field to which this invention pertains and do not depart from the spirit of the invention. Also, the wavelength bands listed here are merely examples, and any different wavelength bands are acceptable.

[0086] (Image sensor)

[0087] As an example, such as Figure 4 As shown, the image sensor 24 has a light-receiving section 26 and a color filter section 28. The light-receiving section 26 has a plurality of first light-receiving elements 30 and a plurality of second light-receiving elements 32. As an example of the first light-receiving element 30, an indium gallium arsenide photodiode can be given. As an example of the second light-receiving element 32, a silicon photodiode can be given.

[0088] Color filter sections 28 are disposed on a plurality of first light-receiving elements 30 and a plurality of second light-receiving elements 32. The color filter section 28 includes an Ir filter, an R filter, a G filter, and a B filter. The Ir filter is a filter that transmits near-infrared (Ir) light. The R filter is a filter that transmits red (R) light. The G filter is a filter that transmits green (G) light. The B filter is a filter that transmits blue (B) light.

[0089] The first light-receiving element 30 is a light-receiving element sensitive to the Ir component of light. The second light-receiving element 32 is generally divided into a light-receiving element 32R sensitive to the R component of light, a light-receiving element 32G sensitive to the G component of light, and a light-receiving element 32B sensitive to the B component of light.

[0090] An Ir filter is disposed on the first light-receiving element 30. An R filter is disposed on the light-receiving element 32R. A G filter is disposed on the light-receiving element 32G. A B filter is disposed on the light-receiving element 32B. In addition, a filter for blocking near-infrared light is disposed on each of the light-receiving elements 32R, 32G, and 32B.

[0091] In the image sensor 24 configured in this way, a plurality of second light-receiving elements 32 receive visible light transmitted through any one of the first BPF88A, the second BPF88B, and the third BPF88C, generate a visible light image 60 based on the received visible light, and output it. A plurality of first light-receiving elements 30 receive near-infrared light transmitted through the fourth BPF88D, generate a near-infrared light image 62 based on the received near-infrared light, and output it.

[0092] (Main body of the surveillance camera)

[0093] As an example, such as Figure 5 As shown, the main body 20 of the surveillance camera includes a controller 40 and a UI system device 50.

[0094] The controller 40 controls the operation of the main body 20 of the surveillance camera. The controller 40 has a CPU 42, an NVM 44, and RAM 46. The CPU 42, NVM 44, and RAM 46 are connected to the bus 48.

[0095] The NVM44 stores various parameters and programs. An example of an NVM44 is an EEPROM (e.g., a flash-based EEPROM). An EEPROM is simply one example of an NVM44. An NVM44 can be any non-volatile storage device such as an SSD or HDD. The RAM46 temporarily stores various information and is used as working memory. An example of a RAM46 is DRAM. DRAM is simply one example of a RAM46. RAM46 can also be SRAM, as long as it is any volatile storage device.

[0096] Various programs are stored in the NVM44. The CPU42 reads the required program from the NVM44 and executes the read program on the RAM46. The CPU42 performs various processes according to the program executed on the RAM46.

[0097] The UI system device 50 is also connected to the bus 48. Under the control of the CPU 42, the UI system device 50 receives instructions from the user or provides the user with various information obtained by the monitoring camera 10.

[0098] Furthermore, the main body 20 of the surveillance camera includes an image sensor driver 52, a signal processing device 54, a jitter detection sensor 56, and a communication I / F 58. The image sensor driver 52, the signal processing device 54, the jitter detection sensor 56, and the communication I / F 58 are connected to the bus 48.

[0099] As an example, such as Figure 2 As shown, the image sensor 24 is located further back than the main lens 82 on the optical axis OA, that is, further towards the image side than the main lens 82. Figure 3 With any one of the filters shown, 1BPF88A, 2BPF88B, and 3BPF88C, positioned on the optical axis OA, the image sensor 24 generates an image based on the visible light image captured on the light-receiving surface 24A through the main lens 82, thereby capturing the image area. Figure 4 The visible light image 60 shown is generated and output to the subsequent stage. The visible light image 60 is an image representing the imaging area formed by visible light.

[0100] Furthermore, in Figure 3 With the fourth BPF88D positioned on the optical axis OA, the image sensor 24 captures an image area based on the near-infrared light imaged on the light-receiving surface 24A by the main lens 82, thereby generating... Figure 4The near-infrared light image 62 shown is output to the downstream section. The near-infrared light image 62 is an image representing the imaging area formed by near-infrared light. In addition, hereafter, when there is no need to distinguish between the near-infrared light image 62 and the visible light image 60, it will be referred to as "imaging image" without any symbol.

[0101] As an example, such as Figure 5 As shown, an image sensor driver 52 and a signal processing unit 54 are connected to the image sensor 24. Under the control of the CPU 42, the image sensor driver 52 outputs a timing control signal to the image sensor 24. The timing control signal controls the image capture based on the image sensor 24. The frame rate of the image capture based on the image sensor 24 is specified by the timing control signal.

[0102] The timing control signals include a vertical synchronization signal and a horizontal synchronization signal. The vertical synchronization signal is a signal that specifies the timing for starting to transmit one frame of analog image. The horizontal synchronization signal is a signal that specifies the timing for starting to output one horizontal line of analog image. The image sensor 24 outputs captured images to the signal processing device 54 frame by frame according to the vertical synchronization signal input from the image sensor driver 52. Furthermore, the image sensor 24 outputs captured images to the signal processing device 54 horizontally according to the horizontal synchronization signal input from the image sensor driver 52.

[0103] Under the control of the CPU 42, the signal processing unit 54 performs signal processing on the camera image input from the image sensor 24, including de-mosaic processing, noise removal processing, grayscale correction processing, and color correction processing. The processed camera image is output by the signal processing unit 54 to the CPU 42. The CPU 42 stores the camera image input from the signal processing unit 54 in a predetermined storage area (e.g., NVM 44 and / or RAM 46).

[0104] jitter detection sensor 56, for example, detects Figure 2The amount of jitter in the surveillance camera 10 shown is referred to as "jitter amount". Jitter in the surveillance camera 10 refers to the phenomenon that the positional relationship between the optical axis OA and the light-receiving surface 24A in the surveillance camera 10 changes. If jitter occurs in the surveillance camera 10, image jitter occurs. As an example of an image, an image obtained by capturing it with an image sensor and / or an optical image obtained by imaging it on the light-receiving surface 24A (hereinafter, also referred to as "image" or "subject image"). In this first embodiment, "image jitter" refers to the phenomenon that the optical axis OA tilts due to vibration, thereby causing the subject image to deviate from a reference position, that is, the phenomenon that the subject image deviates from a reference position due to the relative movement of the optical axis OA relative to the subject. Vibration refers to the phenomenon that the lens device 70 vibrates due to vibration transmitted from the outside of the surveillance camera 10 (e.g., a hand, wind, and / or a vehicle, etc.) and / or the inside of the surveillance camera 10 (e.g., a motor mounted on the surveillance camera 10) to the lens device 70. Furthermore, "optical axis OA tilt" refers, for example, to the tilt of the optical axis OA relative to the reference axis (e.g., the optical axis OA before vibration occurs (i.e., the optical axis OA when the surveillance camera 10 is stationary)). And, "reference position" refers, for example, to the position of the subject image obtained without applying vibration to the lens assembly 70 (e.g., the position of the subject image within the light-receiving surface 24A).

[0105] Figure 5 The jitter detection sensor 56 shown is, for example, a gyroscope sensor. The gyroscope sensor detects the amount of rotational jitter around each axis, namely the X-axis, Y-axis, and Z-axis. The jitter detection sensor 56 detects the jitter of the surveillance camera 10 by converting the amount of rotational jitter around the X-axis and around the Y-axis detected by the gyroscope sensor into jitter in a two-dimensional plane parallel to the X-axis and Y-axis, respectively. Furthermore, in this embodiment, "parallel" means not only perfectly parallel but also approximately parallel, including errors allowed in design and manufacturing.

[0106] Here, a gyroscope sensor is used as an example of a jitter detection sensor 56, but this is just one example; the jitter detection sensor 56 can also be an accelerometer. The accelerometer detects the amount of jitter in a two-dimensional plane parallel to the X and Y axes. The jitter detection sensor 56 outputs the detected jitter to the CPU 42.

[0107] Furthermore, while this example illustrates the detection of jitter by a physical sensor, jitter detection sensor 56, the technology of this invention is not limited to this. For instance, a motion vector obtained by comparing before and after images in a time series stored in NVM 44 or RAM 46 can also be used as the jitter amount. Moreover, the final jitter amount can be derived from the jitter detected by the physical sensor and the motion vector obtained through image processing.

[0108] The communication I / F58 is, for example, a network interface that controls the transmission of various information between the communication I / F58 and the management device 11 via a network. An example of a network could be the Internet or a public WAN (Internet over Internet Protocol). Communication I / F58 management. Figure 1 The communication between the surveillance camera 10 and the management device 11 shown.

[0109] Lens device

[0110] As an example, such as Figure 6 As shown, the lens device 70 includes a controller 90. The controller 90 controls the operation of the lens device 70. The controller 90 includes a CPU 92, an NVM 94, and a RAM 96. The controller 90 is an example of a "computer suitable for a lens device," the CPU 92 is an example of a "processor" according to the technology of this invention, and the RAM 96 is an example of "memory" according to the technology of this invention. The CPU 92, NVM 94, and RAM 96 are connected to a bus 98.

[0111] As an example, such as Figure 2 As shown, with the lens assembly 70 mounted on the lens mount 22 of the surveillance camera body 20, a connector (not shown) provided on the surveillance camera body 20 and a connector (not shown) provided on the lens assembly 70 are connected. Then, via a connection path including the connector of the surveillance camera body 20 and the connector of the lens assembly 70, etc. Figure 5 The CPU 42 of the main body 20 of the surveillance camera shown is... Figure 6 The CPU 92 of the lens device 70 shown is communicatively connected. The CPU 92 of the lens device 70 controls the operation of the lens device 70 according to instructions given from the CPU 42 of the monitoring camera body 20.

[0112] NVM94 stores various parameters and programs. An example of NVM94 is EEPROM (e.g., flash memory EEPROM). EEPROM is simply one example of NVM94. NVM94 can be any non-volatile storage device such as SSD and / or HDD. RAM96 temporarily stores various information and is used as working memory. An example of RAM96 is DRAM. DRAM is simply one example of RAM96. RAM96 can also be SRAM, as long as it is any volatile storage device.

[0113] Various programs are stored in the NVM94. The CPU92 reads the required program from the NVM94 and executes the read program on the RAM96. The CPU92 performs various processes according to the program executed on the RAM96. Furthermore, the "various programs" mentioned here also include the jitter correction / displacement processing program 100 (see reference 100). Figure 9 ).

[0114] In the lens assembly 70, the three mutually orthogonal axes are defined by the X-axis, Y-axis, and Z-axis. For example, as shown... Figure 2 As shown, when the lens device 70 is installed in the lens mount 22 of the main body 20 of the surveillance camera, the X-axis, Y-axis, and Z-axis directions of the lens device 70 may deviate from the X-axis, Y-axis, and Z-axis directions of the surveillance camera 10 due to factors such as loosening. For convenience, it is assumed that the X-axis, Y-axis, and Z-axis directions of the lens device 70 are consistent with the X-axis, Y-axis, and Z-axis directions of the surveillance camera 10. The X-axis and Y-axis directions are orthogonal to the optical axis OA of the lens device 70, and the Z-axis direction is parallel to the optical axis OA.

[0115] As an example, such as Figure 6 As shown, the lens device 70 includes a first motor driver 102, an X-axis VCM driver 104, a Y-axis VCM driver 106, an X-axis piezoelectric element driver 108, a Y-axis piezoelectric element driver 110, a second motor driver 112, a third motor driver 114, and a fourth motor driver 116. Furthermore, the lens device 70 includes a first motor 118, an X-axis VCM 120, a Y-axis VCM 122, an X-axis piezoelectric element 124, a Y-axis piezoelectric element 126, a second motor 128, a third motor 130, and a fourth motor 132. Additionally, the lens device 70 includes a first position sensor 134, an X-axis position sensor 136, a Y-axis position sensor 138, a second position sensor 140, a third position sensor 142, and a fourth position sensor 144.

[0116] The first motor driver 102, the X-axis VCM driver 104, the Y-axis VCM driver 106, the X-axis piezoelectric element driver 108, the Y-axis piezoelectric element driver 110, the second motor driver 112, the third motor driver 114, the fourth motor driver 116, the first position sensor 134, the X-axis position sensor 136, the Y-axis position sensor 138, the second position sensor 140, the third position sensor 142, and the fourth position sensor 144 are connected to bus 98.

[0117] A potentiometer can be cited as an example of each of the first position sensor 134, the X-axis position sensor 136, the Y-axis position sensor 138, the second position sensor 140, the third position sensor 142, and the fourth position sensor 144.

[0118] The first position sensor 134 detects the position of the zoom lens 74 in the Z-axis direction. The X-axis position sensor 136 detects the position of the shake correction lens 76 in the X-axis direction. The Y-axis position sensor 138 detects the position of the shake correction lens 76 in the Y-axis direction. The second position sensor 140 detects the aperture 78A formed in the aperture 78. The third position sensor 142 detects the rotational position of the filter unit 80 relative to the optical axis OA. The fourth position sensor 144 detects the position of the main lens 82 in the Z-axis direction.

[0119] The detection results detected by the first position sensor 134 are output to the CPU 92. The detection results detected by the X-axis position sensor 136 are output to the CPU 92. The detection results detected by the Y-axis position sensor 138 are output to the CPU 92. The detection results detected by the second position sensor 140 are output to the CPU 92. The detection results detected by the third position sensor 142 are output to the CPU 92. The detection results detected by the fourth position sensor 144 are output to the CPU 92.

[0120] The zoom lens 74 is mounted on the first sliding mechanism (not shown). The first sliding mechanism is mechanically connected to the drive shaft of the first motor 118, and moves the zoom lens 74 along the Z-axis by receiving power from the first motor 118. The first motor driver 102 is connected to the first motor 118 and controls the first motor 118 according to instructions from the CPU 92. The CPU 92 controls the first motor 118 via the first motor driver 102 based on the detection result detected by the first position sensor 134, thereby controlling the position of the zoom lens 74 in the Z-axis direction.

[0121] The jitter correction lens 76 is mounted on the jitter correction / displacement drive mechanism 150 of the mechanical structure described in detail later (reference). Figure 7 and Figure 8 Jitter correction / displacement drive mechanism 150 (reference) Figure 7 and Figure 8 It has an X-axis VCM120 and a Y-axis VCM122. The X-axis VCM120 moves the jitter correction lens 76 along the X-axis by applying power to it. The Y-axis VCM122 moves the jitter correction lens 76 along the Y-axis by applying power to it.

[0122] X-axis VCM driver 104 is connected to X-axis VCM 120 and controls X-axis VCM 120 according to instructions from CPU 92. CPU 92... Figure 5 The output of CPU42 shows the jitter detection result detected by jitter detection sensor 56 and the jitter detection result from CPU42. Figure 6 The detection result from the X-axis position sensor 136 shown controls the X-axis VCM 120 via the X-axis VCM driver 104, thereby controlling the position of the jitter correction lens 76 in the X-axis direction. The Y-axis VCM driver 106 is connected to the Y-axis VCM 122 and controls the Y-axis VCM 122 according to the instructions from the CPU 92. The CPU 92 controls the Y-axis VCM 122 according to the instructions from the CPU 92. Figure 5 The output of CPU42 shows the jitter detection result detected by jitter detection sensor 56 and the jitter detection result from CPU42. Figure 6 The detection result detected by the Y-axis position sensor 138 shown controls the Y-axis VCM 122 via the Y-axis VCM driver 106, thereby controlling the position of the jitter correction lens 76 in the Y-axis direction.

[0123] Furthermore, the jitter correction / displacement drive mechanism 150 (reference) Figure 7 and Figure 8 It includes an X-axis piezoelectric element 124 and a Y-axis piezoelectric element 126. The X-axis piezoelectric element 124 moves the jitter correction lens 76 along the X-axis by applying power to it along the X-axis. The Y-axis piezoelectric element 126 moves the jitter correction lens 76 along the Y-axis by applying power to it along the Y-axis.

[0124] The X-axis piezoelectric element driver 108 is connected to the X-axis piezoelectric element 124 and controls the X-axis piezoelectric element 124 according to instructions from the CPU 92. The CPU 92 controls the X-axis piezoelectric element 124 according to instructions from the CPU 92. Figure 5 The CPU42 output image shift instruction and the instruction generated by it are shown. Figure 6The detection result from the X-axis position sensor 136, as shown, controls the X-axis piezoelectric element 124 via the X-axis piezoelectric element driver 108, thereby controlling the position of the jitter correction lens 76 in the X-axis direction. The Y-axis piezoelectric element driver 110 is connected to the Y-axis piezoelectric element 126 and controls the Y-axis piezoelectric element 126 according to instructions from the CPU 92. The CPU 92 controls the Y-axis piezoelectric element 126 according to instructions from the CPU 92. Figure 5 The CPU42 output image shift instruction and the instruction generated by it are shown. Figure 6 The detection result detected by the Y-axis position sensor 138 is used to control the Y-axis piezoelectric element 126 via the Y-axis piezoelectric element driver 110, thereby controlling the position of the jitter correction lens 76 in the Y-axis direction.

[0125] The aperture 78 has multiple blades (not shown) capable of opening and closing the opening 78A. These blades are mechanically connected to the drive shaft of the second motor 128 and open and close the opening 78A by receiving power from the second motor 128. The second motor driver 112 is connected to the second motor 128 and controls the second motor 128 according to instructions from the CPU 92. The CPU 92 controls the second motor 128 based on the detection result detected by the second position sensor 140 and... Figure 5 The amount of light received on the light-receiving surface 24A is shown via Figure 6 The second motor driver 112 shown controls the second motor 128, thereby adjusting the opening degree of the opening 78A.

[0126] The filter unit 80 is mounted on a rotating mechanism (not shown). The rotating mechanism is mechanically connected to the drive shaft of the third motor 130, and rotates the circular plate 84 (see reference) by receiving power from the third motor 130. Figure 3 The filter unit 80 rotates circumferentially, thereby inserting and removing multiple filters in the optical path. A third motor driver 114 is connected to the third motor 130 and controls the third motor 130 according to instructions from the CPU 92. The CPU 92 controls the third motor 130 via the third motor driver 114 based on the detection result detected by the third position sensor 142, thereby controlling the rotational position of the filter unit 80 relative to the optical axis OA.

[0127] The main lens 82 is mounted on the second sliding mechanism (not shown). The second sliding mechanism is mechanically connected to the drive shaft of the fourth motor 132, and moves the main lens 82 along the Z-axis by receiving power from the fourth motor 132. The fourth motor driver 116 is connected to the fourth motor 132 and controls the fourth motor 132 according to instructions from the CPU 92. The CPU 92 controls the fourth motor 132 via the fourth motor driver 116 based on the detection result detected by the fourth position sensor 144, thereby controlling the position of the main lens 82 in the Z-axis direction.

[0128] (Jitter correction / displacement drive mechanism)

[0129] As an example, such as Figure 7 and Figure 8 As shown, the jitter correction / displacement drive mechanism 150 includes a holding member 152, a first support member 154, a second support member 156, an X-axis VCM 120, a Y-axis VCM 122, an X-axis piezoelectric element 124, a Y-axis piezoelectric element 126, an X-axis leaf spring 158, and a Y-axis leaf spring 160.

[0130] The +X-axis direction represents the direction towards the first side of the X-axis direction, and the -X-axis direction represents the direction towards the second side, which is opposite to the first side of the X-axis direction. The +Y-axis direction represents the direction towards the first side of the Y-axis direction, and the -Y-axis direction represents the direction towards the second side, which is opposite to the first side of the Y-axis direction. The +Z-axis direction represents the direction towards the first side of the Z-axis direction, and the -Z-axis direction represents the direction towards the second side, which is opposite to the first side of the Z-axis direction. Furthermore, when the +X-axis and -X-axis directions are not distinguished, they are collectively referred to as the X-axis direction. Similarly, when the +Y-axis and -Y-axis directions are not distinguished, they are collectively referred to as the Y-axis direction. Similarly, when the +Z-axis and -Z-axis directions are not distinguished, they are collectively referred to as the Z-axis direction. The Z-axis direction is parallel to the optical axis OA of the lens assembly 70. As an example, the +Z-axis direction corresponds to the subject side, and the -Z-axis direction corresponds to the image side.

[0131] The XY coordinate plane used in the following description is defined by the X-axis direction and the Y-axis direction. The XY coordinate plane is an example of a "coordinate plane intersecting the optical axis of the lens" according to the technology of this invention, the X-axis direction is an example of a "first direction" according to the technology of this invention, and the Y-axis direction is an example of a "second direction intersecting the first direction" according to the technology of this invention.

[0132] The retaining member 152 is generally plate-shaped. The retaining member 152 is configured with the Z-axis direction as the plate thickness direction. A hole 162 extending through the retaining member 152 along the Z-axis direction is formed in the retaining member 152. The cross-sectional shape of the hole 162 viewed from the axial direction is circular. A jitter correction lens 76 is disposed inside the hole 162. An annular fixing member 164 is provided on the outer periphery of the jitter correction lens 76, and the outer periphery of the jitter correction lens 76 is fixed to the inner peripheral surface of the hole 162 via the fixing member 164, etc. The jitter correction lens 76 is held in the retaining member 152 by its outer periphery being fixed to the inner peripheral surface of the hole 162 via the fixing member 164, etc. When the X-axis VCM 120, Y-axis VCM 122, X-axis piezoelectric element 124, and Y-axis piezoelectric element 126 (described later) are not operating and no jitter occurs in the monitoring camera 10, the center of the jitter correction lens 76 is located on the optical axis OA.

[0133] The first support member 154 is formed in a generally plate-like shape. The first support member 154 is arranged with the Z-axis direction as the plate thickness direction. The first support member 154 is positioned opposite the retaining member 152 in the Z-axis direction. A through hole 166 is formed in the first support member 154 along the Z-axis direction. The cross-sectional shape of the hole 166 when viewed from the axial direction is circular. The hole 166 is formed with a diameter larger than or equal to the diameter of the jitter correction lens 76. Figure 7 and Figure 8 In the example shown, the first support member 154 is positioned relative to the retaining member 152 in the -Z-axis direction. Alternatively, the first support member 154 may also be positioned relative to the retaining member 152 in the +Z-axis direction. By arranging a sliding member such as a ball (not shown) between the retaining member 152 and the first support member 154, the retaining member 152 is supported by the first support member 154 and is able to move along the XY coordinate plane. When the X-axis VCM 120, Y-axis VCM 122, X-axis piezoelectric element 124, and Y-axis piezoelectric element 126 (described later) are not operating and no shaking occurs in the monitoring camera 10, the center of the aperture 166 is located on the optical axis OA.

[0134] The second support member 156 is fixed to the housing 70A of the lens assembly 70. The housing 70A of the lens assembly 70, in addition to supporting the shake correction lens 76 and the shake correction / displacement drive mechanism 150, also supports the aforementioned objective lens 72, zoom lens 74, aperture 78, filter unit 80, and main lens 82 (see reference). Figure 2 The second support member 156 is fixed to the housing 70A of the lens device 70.

[0135] As an example, the second support member 156 has a plate-shaped portion 168 and an annular portion 170 formed along the outer periphery of the plate-shaped portion 168, and is formed in a generally disk-shaped manner. The annular portion 170 extends from the outer periphery of the plate-shaped portion 168 in the +Z-axis direction. The second support member 156 is configured such that the thickness direction of the plate-shaped portion 168 is aligned with the Z-axis direction. A first support member 154 is disposed inside the annular portion 170 formed in the second support member 156, and the first support member 154 is disposed opposite to the plate-shaped portion 168 in the Z-axis direction. A hole 172 is formed in the plate-shaped portion 168, extending through in the Z-axis direction. The cross-sectional shape of the hole 172 when viewed from the axial direction is circular. The hole 172 is formed with a diameter greater than or equal to the diameter of the jitter correction lens 76. The center of the hole 172 is located on the optical axis OA. By arranging a sliding member such as a ball (not shown) between the first support member 154 and the plate-shaped portion 168, the first support member 154 is supported by the second support member 156 so that it can move along the XY coordinate plane.

[0136] The X-axis VCM120 and Y-axis VCM122 form a jitter correction drive mechanism 174. The X-axis VCM120 is an example of the "voice coil motor" and "first actuator" involved in the technology of this invention, the Y-axis VCM122 is an example of the "voice coil motor" and "second actuator" involved in the technology of this invention, and the jitter correction drive mechanism 174 is an example of the "first drive mechanism" involved in the technology of this invention.

[0137] A jitter correction drive mechanism 174 is disposed between the holding member 152 and the first support member 154. The jitter correction drive mechanism 174 moves the jitter correction lens 76 along the XY coordinate plane by applying force to the jitter correction lens 76 in the direction of jitter in the corrected image along the XY coordinate plane. Specifically, the X-axis VCM 120 applies force to the jitter correction lens 76 in the X-axis direction of the corrected image's jitter in the X-axis direction, causing the jitter correction lens 76 to move along the X-axis direction, and the Y-axis VCM 122 applies force to the jitter correction lens 76 in the Y-axis direction of the corrected image's jitter in the Y-axis direction, causing the jitter correction lens 76 to move along the Y-axis direction.

[0138] As an example, the X-axis VCM120 is positioned relative to the jitter correction lens 76 in the +X-axis direction. Alternatively, the X-axis VCM120 can also be positioned relative to the jitter correction lens 76 in the -X-axis direction. The X-axis VCM120 is located between the holding member 152 and the first support member 154 in the Z-axis direction. As an example, the X-axis VCM120 is a flat coil voice coil motor, having a coil 176 and a pair of magnets 178 and 180.

[0139] As an example, coil 176 is fixed to retaining member 152, and a pair of magnets 178 and 180 are fixed to first supporting member 154. Alternatively, coil 176 can also be fixed to first supporting member 154, and the pair of magnets 178 and 180 can also be fixed to retaining member 152. Coil 176 is arranged with the Z-axis direction as its axial direction, and the pair of magnets 178 and 180 are arranged in the X-axis direction. The N pole of magnet 178 is opposite to coil 176, and the S pole of magnet 180 is opposite to coil 176.

[0140] The X-axis VCM120 generates power in the X-axis direction. The direction of the current flowing through coil 176 is determined by the X-axis VCM driver 104 (reference). Figure 6Switching. By switching the direction of the current flowing through coil 176, the direction of the force exerted on coil 176 by a pair of magnets 178 and 180 is switched. When coil 176 is subjected to a force from a pair of magnets 178 and 180 along the +X-axis, a force is applied to holding member 152 and jitter correction lens 76 along the +X-axis, causing them to move. When coil 176 is subjected to a force from a pair of magnets 178 and 180 along the -X-axis, a force is applied to holding member 152 and jitter correction lens 76 along the -X-axis, causing them to move. Thus, by applying force using the X-axis VCM 120, jitter correction lens 76 moves in the X-axis direction, thereby correcting jitter in the X-axis direction of the image.

[0141] As an example, the Y-axis VCM122 is positioned relative to the jitter correction lens 76 in the -Y-axis direction. Alternatively, the Y-axis VCM122 can also be positioned relative to the jitter correction lens 76 in the +Y-axis direction. The Y-axis VCM122 is located between the holding member 152 and the first support member 154 in the Z-axis direction. As an example, the Y-axis VCM122 is a flat coil voice coil motor, having a coil 182 and a pair of magnets 184 and 186.

[0142] As an example, coil 182 is fixed to holding member 152, and a pair of magnets 184 and 186 are fixed to first support member 154. Alternatively, coil 182 can also be fixed to first support member 154, and the pair of magnets 184 and 186 can also be fixed to holding member 152. Coil 182 is arranged with the Z-axis direction as its axial direction, and the pair of magnets 184 and 186 are arranged in the Y-axis direction. The N pole of magnet 184 is opposite to coil 182, and the S pole of magnet 186 is opposite to coil 182.

[0143] The Y-axis VCM122 generates power in the Y-axis direction. The direction of the current flowing through the coil 182 is determined by the Y-axis VCM driver 106 (reference). Figure 6 Switching. By switching the direction of the current flowing through coil 182, the direction of the force exerted on coil 182 by a pair of magnets 184 and 186 is switched. When coil 182 is subjected to a force from a pair of magnets 184 and 186 along the +Y axis, a force is applied to holding member 152 and jitter correction lens 76 along the +Y axis, causing holding member 152 and jitter correction lens 76 to move along the +Y axis. When coil 182 is subjected to a force from a pair of magnets 184 and 186 along the -Y axis, a force is applied to holding member 152 and jitter correction lens 76 along the -Y axis, causing holding member 152 and jitter correction lens 76 to move along the -Y axis. Thus, by applying force using the Y-axis VCM122, jitter correction lens 76 moves in the Y-axis direction, thereby correcting jitter in the Y-axis direction of the image.

[0144] Additionally, as an example, the X-axis VCM120 is a flat coil voice coil motor with coil 176 and a pair of magnets 178 and 180 facing each other axially on coil 176. However, the X-axis VCM120 can also be a square coil voice coil motor with coil 176 arranged between a pair of magnets 178 and 180 facing each other radially on coil 176. Similarly, as an example, the Y-axis VCM122 is a flat coil voice coil motor with coil 182 and a pair of magnets 184 and 186 facing each other axially on coil 182. However, the Y-axis VCM122 can also be a square coil voice coil motor with coil 182 arranged between a pair of magnets 184 and 186 facing each other radially on coil 182.

[0145] The X-axis piezoelectric element 124, Y-axis piezoelectric element 126, X-axis leaf spring 158, and Y-axis leaf spring 160 form a displacement drive mechanism 188. The X-axis piezoelectric element 124 is an example of an "actuator" and a "third actuator" according to the technology of this invention, and the Y-axis piezoelectric element 126 is an example of an "actuator" and a "fourth actuator" according to the technology of this invention. The X-axis leaf spring 158 is an example of an "elastic member" according to the technology of this invention, the Y-axis leaf spring 160 is an example of an "elastic member" according to the technology of this invention, and the displacement drive mechanism 188 is an example of a "second drive mechanism" according to the technology of this invention.

[0146] A displacement drive mechanism 188 is disposed between the first support member 154 and the second support member 156. The displacement drive mechanism 188 moves the jitter correction lens 76 along the XY coordinate plane by applying force to the jitter correction lens 76 in the direction of image displacement along the XY coordinate plane. Specifically, the X-axis piezoelectric element 124 moves the jitter correction lens 76 along the X-axis direction by applying force to the jitter correction lens 76 in the direction of image displacement along the X-axis direction, and the Y-axis piezoelectric element 126 moves the jitter correction lens 76 along the Y-axis direction by applying force to the jitter correction lens 76 in the direction of image displacement along the Y-axis direction.

[0147] As an example, the X-axis piezoelectric element 124 is disposed in the X-axis direction relative to the first support member 154. The X-axis piezoelectric element 124 is disposed between the first support member 154 and the second support member 156 in the X-axis direction. Alternatively, an actuator such as a DC motor that generates the same power as the piezoelectric element may be used instead of the X-axis piezoelectric element 124.

[0148] The X-axis leaf spring 158 is positioned opposite the X-axis piezoelectric element 124. That is, the X-axis leaf spring 158 is positioned relative to the first support member 154 in the +X-axis direction. The X-axis piezoelectric element 124 is disposed between the first support member 154 and the second support member 156 in the X-axis direction. As an example, the X-axis leaf spring 158 is a U-shaped or V-shaped leaf spring. Alternatively, the X-axis piezoelectric element 124 may be positioned relative to the first support member 154 in the +X-axis direction, and the X-axis leaf spring 158 may be positioned relative to the first support member 154 in the -X-axis direction. Furthermore, the X-axis leaf spring 158 may be a leaf spring of a shape other than U-shaped or V-shaped. Additionally, elastic components such as coil springs, torsion springs, rubber, or sponges may be used instead of the X-axis leaf spring 158.

[0149] The X-axis piezoelectric element 124 generates power in the X-axis direction. The X-axis piezoelectric element 124 is configured to generate power in the +X-axis direction. The presence or absence of power supplied to the X-axis piezoelectric element 124 is determined by the X-axis piezoelectric element driver 108 (see reference). Figure 6 Switching. If power is supplied to the X-axis piezoelectric element 124, the X-axis piezoelectric element 124 operates; if the power supply to the X-axis piezoelectric element 124 is stopped, the X-axis piezoelectric element 124 stops. When the X-axis piezoelectric element 124 operates, it applies power to the holding member 152 and the jitter correction lens 76 along the +X axis direction via the second support member 156. The holding member 152, the jitter correction lens 76, and the second support member 156 move along the +X axis direction against the elastic force of the X-axis leaf spring 158. Thus, by applying power using the X-axis piezoelectric element 124, the jitter correction lens 76 moves, thereby displacing the image along the +X axis direction. If the X-axis piezoelectric element 124 stops operating, the elastic force generated by the X-axis leaf spring 158 in the -X-axis direction acts on the holding member 152 and the jitter correction lens 76 via the second support member 156. The holding member 152, the jitter correction lens 76, and the second support member 156 move along the -X-axis direction and return to their original positions.

[0150] As an example, the Y-axis piezoelectric element 126 is disposed in the Y-axis direction relative to the first support member 154. The Y-axis piezoelectric element 126 is disposed between the first support member 154 and the second support member 156 in the Y-axis direction. Alternatively, an actuator such as a DC motor that generates the same power as the piezoelectric element may be used instead of the Y-axis piezoelectric element 126.

[0151] The Y-axis leaf spring 160 is positioned opposite the Y-axis piezoelectric element 126. That is, the Y-axis leaf spring 160 is positioned in the +Y-axis direction relative to the first support member 154. The Y-axis piezoelectric element 126 is disposed between the first support member 154 and the second support member 156 in the Y-axis direction. As an example, the Y-axis leaf spring 160 is a U-shaped or V-shaped leaf spring. Alternatively, the Y-axis piezoelectric element 126 may be positioned in the +Y-axis direction relative to the first support member 154, and the Y-axis leaf spring 160 may be positioned in the -Y-axis direction relative to the first support member 154. Furthermore, the Y-axis leaf spring 160 may be a leaf spring of a shape other than U-shaped or V-shaped. Additionally, elastic components such as coil springs, torsion springs, rubber, or sponges may be used instead of the Y-axis leaf spring 160.

[0152] The Y-axis piezoelectric element 126 generates power in the Y-axis direction. The Y-axis piezoelectric element 126 is configured to generate power in the +Y-axis direction. The presence or absence of power supplied to the Y-axis piezoelectric element 126 is determined by the Y-axis piezoelectric element driver 110 (see reference). Figure 6 Switching. If power is supplied to the Y-axis piezoelectric element 126, the Y-axis piezoelectric element 126 operates; if the power supply to the Y-axis piezoelectric element 126 is stopped, the Y-axis piezoelectric element 126 stops. If the Y-axis piezoelectric element 126 operates, it applies power to the holding member 152 and the jitter correction lens 76 along the +Y axis direction via the second support member 156. The holding member 152, the jitter correction lens 76, and the second support member 156 move along the +Y axis direction against the elastic force of the X-axis leaf spring 160. Thus, by applying power using the Y-axis piezoelectric element 126, the jitter correction lens 76 moves, thereby displacing the image along the +Y axis direction. If the Y-axis piezoelectric element 126 stops operating, the elastic force generated by the Y-axis leaf spring 160 in the -Y-axis direction acts on the holding member 152 and the jitter correction lens 76 via the second support member 156. The holding member 152, the jitter correction lens 76, and the second support member 156 move along the -Y-axis direction and return to their original positions.

[0153] (Functional structure of the CPU in the lens device)

[0154] As an example, such as Figure 9 As shown, jitter correction / displacement processing is achieved by executing jitter correction / displacement processing program 100 using the CPU 92 of the lens device 70. Jitter correction / displacement processing program 100 is an example of a "program" involved in the technology of this invention. Figure 9 In the example shown, a jitter correction / displacement processing program 100 is stored in NVM94, and CPU92 reads the jitter correction / displacement processing program 100 from NVM94 and executes it on RAM96.

[0155] The CPU 92 performs jitter correction / displacement processing according to the jitter correction / displacement processing program 100 executed on the RAM 96. The CPU 92 operates as the acquisition unit 200, the calculation unit 202, and the control unit 204 by executing the jitter correction / displacement processing program 100 on the RAM 96. Further details will be described later; the jitter correction / displacement processing includes jitter correction processing (see reference). Figure 24 ) and displacement processing (reference) Figure 25 ) processing.

[0156] As an example, such as Figure 10 As shown, the acquisition unit 200 acquires a shake correction command and a shake detection result detected by the shake detection sensor 56 as information sent from the CPU 42 of the surveillance camera body 20. The shake correction command is a command message requesting shake correction, and the shake detection result detected by the shake detection sensor 56 is information indicating that the shake of the surveillance camera 10 has been detected. Furthermore, the acquisition unit 200 acquires the position detection result detected by the X-axis position sensor 136 and the position detection result detected by the Y-axis position sensor 138. The position detection result detected by the X-axis position sensor 136 is information indicating that the position of the shake correction lens 76 in the X-axis direction has been detected, and the position detection result detected by the Y-axis position sensor 138 is information indicating that the position of the shake correction lens 76 in the Y-axis direction has been detected.

[0157] When the jitter correction command is acquired by the acquisition unit 200, the calculation unit 202 adjusts the X-axis VCM120 (reference) based on the jitter detection result detected by the jitter detection sensor 56. Figure 11 The calculation unit 202 calculates the direction and amount of motion for correcting the jitter in the X-axis direction of image 210. The jitter in the X-axis direction of image 210 includes jitter in the +X-axis direction and jitter in the -X-axis direction. Specifically, the calculation unit 202 calculates the direction and amount of motion for the X-axis VCM 120 to return the position of image 210 (represented by a double-dotted line) jittered by the surveillance camera 10 to the position of image 210 (represented by a solid line) before the jitter occurred. The direction and amount of motion for correcting the jitter in the X-axis direction of image 210 can be predetermined based on the jitter detection result detected by the jitter detection sensor 56, and can also be calculated using various formulas.

[0158] Similarly, when the jitter correction command is acquired by the acquisition unit 200, the calculation unit 202 adjusts the Y-axis VCM122 (reference) based on the jitter detection result detected by the jitter detection sensor 56. Figure 11The calculation unit 202 calculates the direction and amount of motion for correcting the jitter in the Y-axis direction of image 210. The jitter in the Y-axis direction of image 210 includes jitter in the +Y-axis direction and jitter in the -Y-axis direction. Specifically, the calculation unit 202 calculates the direction and amount of motion for the Y-axis VCM 122 to return the position of image 210 (represented by a double-dotted line) jittered by the surveillance camera 10 to the position of image 210 (represented by a solid line) in the Y-axis direction before the jitter occurred. The direction and amount of motion for correcting the jitter in the X-axis direction of image 210 can be predetermined based on the jitter detection result detected by the jitter detection sensor 56, and can also be calculated using various formulas. In addition, the correction of image 210 jitter includes not only making the position of image 210 jittered by the surveillance camera 10 consistent with the position of image 210 before the surveillance camera 10 jittered, but also making the position of image 210 jittered by the surveillance camera 10 closer to the position of image 210 before the surveillance camera 10 jittered.

[0159] exist Figure 11 The diagram shows an example of the control unit 204 outputting control commands to the X-axis VCM driver 104 and the Y-axis VCM driver 106 based on the calculation results of the calculation unit 202. The control unit 204 uses the movement direction and movement amount of the X-axis VCM 120 calculated by the calculation unit 202 as target values ​​and adjusts the parameters based on the X-axis position sensor 136 (reference). Figure 10 The control unit 204 generates control commands based on the position detection results detected by the calculation unit 202. The control commands are output to the X-axis VCM driver 104. Furthermore, the control unit 204 uses the movement direction and movement amount of the Y-axis VCM 122 calculated by the calculation unit 202 as target values, and adjusts the parameters based on the Y-axis position sensor 138 (reference). Figure 10 The detected position results generate control commands. The control commands are output to the Y-axis VCM driver 106.

[0160] The X-axis VCM driver 104 generates an action signal based on the control command generated by the control unit 204. As an example, the action signal is a continuous wave. The X-axis VCM 120 operates in an action direction and with an action amount corresponding to the action signal. The voltage value of the action signal is proportional to the action amount of the X-axis VCM 120. When the voltage of the action signal is positive, the X-axis VCM 120 operates in the direction that moves the image 210 along the +X-axis direction; when the voltage of the action signal is negative, the X-axis VCM 120 operates in the direction that moves the image 210 along the -X-axis direction. When jitter occurs in the image 210 along the -X-axis direction, the X-axis VCM 120 operates in the direction that moves the image 210 along the +X-axis direction; when jitter occurs in the image 210 along the +X-axis direction, it operates in the direction that moves the image 210 along the -X-axis direction. As a result, the jitter correction lens 76 moves in the direction that corrects the jitter in the X-axis direction of the image 210, thereby correcting the jitter in the X-axis direction of the image 210. exist Figure 11 In the example shown, the motion signal assigned to the X-axis VCM120 is represented by a sine wave, but the motion signal assigned to the X-axis VCM120 is a signal generated based on the jitter of the image 210, and is not limited to a sine wave.

[0161] Similarly, the Y-axis VCM driver 106 generates an action signal based on the control command generated by the control unit 204. As an example, the action signal is a continuous wave. The Y-axis VCM 122 operates in an action direction and with an action amount corresponding to the action signal. The voltage value of the action signal is proportional to the action amount of the Y-axis VCM 122. When the voltage of the action signal is positive, the Y-axis VCM 122 operates in the direction that moves the image 210 along the +Y-axis direction; when the voltage of the action signal is negative, the Y-axis VCM 122 operates in the direction that moves the image 210 along the -Y-axis direction. When jitter occurs in the image 210 along the -Y-axis direction, the Y-axis VCM 122 operates in the direction that moves the image 210 along the +Y-axis direction; when jitter occurs in the image 210 along the +Y-axis direction, it operates in the direction that moves the image 210 along the -Y-axis direction. Therefore, the jitter correction lens 76 moves in the direction of jitter in the Y-axis direction of the image 210, thereby correcting the jitter in the Y-axis direction of the image 210. Figure 11 In the example shown, the motion signal assigned to the Y-axis VCM122 is represented by a sine wave, but the motion signal assigned to the Y-axis VCM122 is a signal generated based on the jitter of image 210, and is not limited to a sine wave.

[0162] The control of the jitter correction drive mechanism 174 by the control unit 204 described above is a feedback control based on the jitter detection result (the jitter of the surveillance camera 10) detected by the jitter detection sensor 56.

[0163] Furthermore, as an example, such as Figure 12 As shown, the acquisition unit 200 acquires image displacement commands and frame period information as information sent from the CPU 42 of the surveillance camera body 20. Furthermore, the acquisition unit 200 acquires the position detection results detected by the X-axis position sensor 136 and the position detection results detected by the Y-axis position sensor 138. The image displacement command is a command information requesting image displacement. Image displacement commands are classified into X-axis image displacement commands indicating the displacement and amount of image 210 in the +X-axis direction, Y-axis image displacement commands indicating the displacement and amount of image 210 in the +Y-axis direction, and XY-axis image displacement commands indicating the displacement and amount of image 210 in both the +X-axis and +Y-axis directions.

[0164] The displacement amount, such as 210, is defined by a spacing greater than or less than the pixel pitch of the image sensor 24. Spacing greater than or equal to the pixel pitch of the image sensor 24 can be, for example, a spacing of 1, 1.5, 2.5, or 3.5. When the pixel pitch of the image sensor 24 is set to p, the natural number to n, and the decimal to d, the spacing greater than the pixel pitch of the image sensor 24 is defined by (n+d)×p. Furthermore, the spacing less than the pixel pitch of the image sensor 24 can be, for example, a spacing of 0.25, 0.5, or 0.75. When the pixel pitch of the image sensor 24 is set to p and the decimal less than 1 is set to D, the spacing less than the pixel pitch of the image sensor 24 is defined by D×p.

[0165] Frame period information is specified and output from CPU 42 to image sensor driver 52 (reference). Figure 5 The frame period information is synchronized with the timing control signal of the camera. The frame period refers to the period during which the camera is shot in frames.

[0166] When the acquisition unit 200 acquires an X-axis image displacement command, the calculation unit 202 calculates the operation amount of the X-axis piezoelectric element 124 for each frame period based on the displacement amount of the image 210 represented by the X-axis image displacement command, the frame period represented by the frame period information, and the position detection result detected by the X-axis position sensor 136. For example, when the displacement amount of the image 210 represented by the X-axis image displacement command is the same as the pixel pitch of the image sensor 24, the calculation unit 202 calculates the operation amount of the X-axis piezoelectric element 124 that displaces the image 210 at a distance equal to the pixel pitch of the image sensor 24. Furthermore, when the displacement amount of the image 210 represented by the X-axis image displacement command is greater than the pixel pitch of the image sensor 24, the calculation unit 202 calculates the operation amount of the X-axis piezoelectric element 124 that displaces the image 210 along the +X-axis direction by (n+d)×p. Furthermore, when the displacement of image 210 indicated by the X-axis image displacement command is less than the pixel pitch of image sensor 24, the calculation unit 202 calculates the amount of action of the X-axis piezoelectric element 124 that causes image 210 to be displaced along the +X-axis direction by D×p.

[0167] Similarly, when the acquisition unit 200 acquires a Y-axis image displacement command, the calculation unit 202 calculates the operation amount of the Y-axis piezoelectric element 126 for each frame period based on the displacement amount of the image 210 represented by the Y-axis image displacement command, the frame period represented by the frame period information, and the position detection result detected by the Y-axis position sensor 138. For example, when the displacement amount of the image 210 represented by the Y-axis image displacement command is the same as the pixel pitch of the image sensor 24, the calculation unit 202 calculates the operation amount of the Y-axis piezoelectric element 126 that displaces the image 210 at a distance equal to the pixel pitch of the image sensor 24. Furthermore, when the displacement amount of the image 210 represented by the Y-axis image displacement command is greater than the pixel pitch of the image sensor 24, the calculation unit 202 calculates the operation amount of the Y-axis piezoelectric element 126 that displaces the image 210 along the +Y-axis direction by (n+d)×p. Furthermore, when the displacement of image 210 represented by the Y-axis image displacement command is less than the pixel pitch of image sensor 24, the calculation unit 202 calculates the amount of action of the X-axis piezoelectric element 124 that causes image 210 to be displaced along the +Y-axis direction by D×p.

[0168] Furthermore, when the acquisition unit 200 acquires the XY axis image displacement command, the calculation unit 202 calculates the operation amount of the X-axis piezoelectric element 124 in the same manner as when the acquisition unit 200 acquires the X-axis image displacement command, and calculates the operation amount of the Y-axis piezoelectric element 126 in the same manner as when the acquisition unit 200 acquires the Y-axis image displacement command.

[0169] As an example, such as Figure 13As shown, the control unit 204 generates control commands corresponding to the operating amount of the X-axis piezoelectric element 124 calculated by the calculation unit 202 each frame cycle. The control commands are output to the X-axis piezoelectric element driver 108. Furthermore, the control unit 204 generates control commands corresponding to the operating amount of the Y-axis piezoelectric element 126 calculated by the calculation unit 202 each frame cycle. The control commands are output to the Y-axis piezoelectric element driver 110 in sync with the frame cycle information.

[0170] The X-axis piezoelectric element driver 108 generates an action signal according to the control command generated by the control unit 204. For example, the action signal is a pulse wave. The voltage value of the action signal is proportional to the amount of action of the X-axis piezoelectric element 124. The period of the action signal is synchronized with the frame period specified by the frame period information. The X-axis piezoelectric element 124 operates with an amount of action corresponding to the action signal. As a result, the jitter correction lens 76 moves in the direction that displaces the image 210 along the +X-axis direction each frame period, thereby displacing the image 210 along the +X-axis direction.

[0171] Similarly, the Y-axis piezoelectric element driver 110 generates an action signal according to the control command generated by the control unit 204. For example, the action signal is a pulse wave. The voltage value of the action signal is proportional to the amount of action of the Y-axis piezoelectric element 126. The period of the action signal is synchronized with the frame period specified by the frame period information. The Y-axis piezoelectric element 126 operates with an amount of action corresponding to the action signal. As a result, the jitter correction lens 76 moves in the direction that displaces the image 210 along the +Y axis each frame period, thereby displacing the image 210 along the +Y axis.

[0172] As an example, such as Figure 14 As shown, the control unit 204 can repeatedly perform selective switching of the presence or absence of image displacement in the +X-axis direction and the presence or absence of image displacement in the +Y-axis direction, as a group of four frame periods 1 to 4. The presence or absence of image displacement in the +X-axis direction corresponds to the X-axis piezoelectric element 124 (reference). Figure 13 The presence or absence of the driving force, and the presence or absence of the image displacement in the +Y axis direction, are equivalent to the Y-axis piezoelectric element 126 (reference). Figure 13 The presence or absence of power of the X-axis piezoelectric element 124 and the Y-axis piezoelectric element 126 can be selectively controlled by switching the combination of the presence or absence of image displacement in the +X-axis direction and the presence or absence of image displacement in the +Y-axis direction.

[0173] exist Figure 14In the example shown, as one instance, in frame period 1, the image displacement in the +X axis direction is zero and the image displacement in the +Y axis direction is zero; in frame period 2, the image displacement in the +X axis direction is present and the image displacement in the +Y axis direction is zero; in frame period 3, the image displacement in the +X axis direction is present and the image displacement in the +Y axis direction is present; and in frame period 4, the image displacement in the +X axis direction is zero and the image displacement in the +Y axis direction is present. Thus, the image is displaced according to each frame period 1 to 4, and the image sensor 24 (reference) is adjusted based on the image displacement. Figure 13 The camera body 20 captures images of multiple frames corresponding to each of frame periods 1 to 4. Then, it uses the CPU 42 of the main body 20 of the surveillance camera to synthesize the images of multiple frames 212 to obtain a composite image 214.

[0174] The composite image 214 is obtained, for example, by the following method: When the image displacement is the same as the pixel pitch of the image sensor 24, multiple image pixels of one image in the multiple frames of the image 212 overlap with multiple image pixels of other images, thereby obtaining the composite image 214 from the multiple frames of the image 212. Furthermore, when the image displacement is greater than the pixel pitch of the image sensor 24 (the pitch expressed by formula (n+d)×p), or when the image displacement is less than the pixel pitch of the image sensor 24, multiple image pixels of other images are allocated among the multiple image pixels of one image in the multiple frames of the image 212, thereby obtaining a high-resolution image as the composite image 214 from the multiple frames of the image 212.

[0175] In addition, as an example, such as Figure 15 As shown, the control unit 204 can repeatedly perform control by selectively switching the combination of the presence or absence of image displacement in the +X axis direction and the presence or absence of image displacement in the +Y axis direction, as a group of frame periods 1 to 3 of 3 periods.

[0176] exist Figure 15 In the example shown, as one instance, in frame period 1, the image displacement in the +X axis direction is zero and the image displacement in the +Y axis direction is zero; in frame period 2, the image displacement in the +X axis direction is present and the image displacement in the +Y axis direction is zero; and in frame period 3, the image displacement in the +X axis direction is zero and the image displacement in the +Y axis direction is present. Thus, the image is displaced according to each frame period 1 to 3, and the image sensor 24 (reference) is adjusted based on the image displacement. Figure 13 The camera body 20 captures images of multiple frames corresponding to each of frame periods 1 to 3. Then, it uses the CPU 42 of the main body 20 of the surveillance camera to synthesize the images of multiple frames 212 to obtain a composite image 214.

[0177] Furthermore, as an example, such as Figure 16 As shown, the control unit 204 can repeatedly perform a combination of selective switching between the presence or absence of image displacement in the +X axis direction and the presence or absence of image displacement in the +Y axis direction, as a group of two-cycle frame periods 1 to 2.

[0178] exist Figure 16 In the example shown, as one instance, in frame period 1, there is a combination of no image displacement in the +X axis direction and no image displacement in the +Y axis direction; in frame period 2, there is a combination of image displacement in the +X axis direction and image displacement in the +Y axis direction. Thus, the image is displaced in each frame period 1-2, and the image sensor 24 (reference) is adjusted according to the image displacement. Figure 13 The camera body 20 captures images of multiple frames corresponding to each of frame periods 1 to 2. Then, it uses the CPU 42 of the main body 20 of the surveillance camera to synthesize the images of multiple frames 212 to obtain a composite image 214.

[0179] The control of the displacement drive mechanism 188 by the control unit 204 described above is not based on the jitter detection result (jitter of the surveillance camera 10) detected by the jitter detection sensor 56, but on a pre-defined displacement sequence (see reference). Figures 14-16 Sequence control.

[0180] However, when the surveillance camera 10 (reference) is generated Figure 1 When shaking (etc.), such as Figure 13 As shown, sometimes the image 210 is shifted. In this case, the jitter correction lens 76 performs the following actions.

[0181] As an example, in Figure 17 The diagram illustrates an example where image 210 is displaced along the +X-axis direction when jitter occurs in the -X-axis direction. In this example, the displacement drive mechanism 188 moves the jitter correction lens 76 in the direction (+X-axis direction) that the jitter correction drive mechanism 174 moves. The jitter correction lens 76 moves by an amount equal to the movement in the +X-axis direction based on the jitter correction drive mechanism 174 plus the movement in the +X-axis direction based on the displacement drive mechanism 188. Consequently, image 210 moves by an amount A equal to the movement A1 that corrects the jitter in image 210 plus the movement A2 that displaces image 210, thus displacing image 210 to the position specified by the X-axis image displacement command.

[0182] Furthermore, as an example, in Figure 18The diagram illustrates an example where image 210 is displaced along the +X-axis direction when jitter occurs in image 210 in the +X-axis direction. In this example, the displacement drive mechanism 188 moves the jitter correction lens 76 in the opposite direction (+X-axis direction) to the direction (-X-axis direction) in which the jitter correction drive mechanism 174 moves the jitter correction lens 76. The jitter correction lens 76 thus moves by an amount equal to the amount of movement in the -X-axis direction based on the jitter correction drive mechanism 174 minus the amount of movement in the +X-axis direction based on the displacement drive mechanism 188. Consequently, image 210 moves by an amount B equal to the amount of movement B1 that corrects the jitter in image 210 minus the amount of movement B2 that displaces image 210, thereby displacing image 210 to the position specified by the X-axis image displacement command.

[0183] The above are specific examples of how the image 210 is displaced along the +X axis direction by the movement of the X-axis piezoelectric element 124 along the +X axis direction. The specific examples of how the image 210 is displaced along the +Y axis direction by the movement of the Y-axis piezoelectric element 126 along the +Y axis direction are as follows.

[0184] As an example, in Figure 19 The diagram illustrates an example where image 210 is displaced along the +Y axis direction when jitter occurs in the -Y axis direction. In this example, the displacement drive mechanism 188 moves the jitter correction lens 76 in the direction (+Y axis direction) that the jitter correction drive mechanism 174 moves the jitter correction lens 76. The jitter correction lens 76 moves by an amount equal to the movement in the +Y axis direction based on the jitter correction drive mechanism 174 plus the movement in the +X axis direction based on the displacement drive mechanism 188. Consequently, image 210 moves by an amount C equal to the movement C1 that corrects the jitter of image 210 plus the movement C2 that displaces image 210, thus displacing image 210 to the position specified by the Y-axis image displacement command.

[0185] Furthermore, as an example, in Figure 20 The diagram illustrates an example where image 210 is displaced along the +Y axis direction when jitter occurs in image 210. In this example, the displacement drive mechanism 188 moves the jitter correction lens 76 in the opposite direction (+Y axis direction) to the direction (-Y axis direction) in which the jitter correction drive mechanism 174 moves the jitter correction lens 76. This causes the jitter correction lens 76 to move by an amount equal to the movement of the jitter correction lens 76 in the -Y axis direction based on the jitter correction drive mechanism 174 minus the movement of the jitter correction lens 76 in the +Y axis direction based on the displacement drive mechanism 188. Consequently, image 210 moves by an amount D equal to the movement D1 that corrects the jitter of image 210 minus the movement D2 that displaces image 210, thus displacing image 210 to the position specified by the Y-axis image displacement command.

[0186] exist Figure 21 The diagram shows an example of the operation of a jitter correction lens 76 such that the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188 overlaps with the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174, as described above. Figure 21 The diagram in the upper part shows the action of the jitter correction lens 76 by moving the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188 to overlap with the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174. Figure 21 The graphs in the lower section represent the amount of movement of the jitter correction lens 76, which is powered by the displacement drive mechanism 188 (the amount of movement of the jitter correction lens 76 corresponding to the presence or absence of image displacement). The vertical axis of each graph represents the direction and amount of movement of the jitter correction lens 76, and the horizontal axis of each graph represents time.

[0187] As an example, such as Figure 21 As shown, when the displacement drive mechanism 188 moves the jitter correction lens 76 in the direction that the jitter correction drive mechanism 174 moves (i.e., when there is image displacement and the movement direction of the jitter correction lens 76 based on the displacement drive mechanism 188 is the same as the movement direction of the jitter correction lens 76 based on the jitter correction drive mechanism 174), the jitter correction lens 76 moves by the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174 plus the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188. When there is no image displacement, the jitter correction lens 76 does not add the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174 to the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188, but moves by the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174.

[0188] On the other hand, when the displacement drive mechanism 188 moves the jitter correction lens 76 in the opposite direction to the direction in which the jitter correction drive mechanism 174 moves the jitter correction lens 76 (i.e., when there is image displacement and the direction of movement of the jitter correction lens 76 based on the displacement drive mechanism 188 is opposite to the direction of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174), the jitter correction lens 76 moves by the amount of movement obtained by subtracting the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188 from the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174. When there is no image displacement, the jitter correction lens 76 does not subtract the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 188 from the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174, but moves by the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174. Furthermore, the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174 is greater than the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188.

[0189] exist Figure 21 In the example shown, for ease of understanding of the direction and amount of movement of the jitter correction lens 76, for convenience, half a cycle of the operation period of the jitter correction lens 76 based on the jitter correction drive mechanism 174 is made to coincide with the frame period. However, the operation of the jitter correction lens 76 based on the jitter correction drive mechanism 174 is not limited to this. That is, the operation of the jitter correction lens 76 based on the jitter correction drive mechanism 174 is determined according to the jitter of the image, therefore, for example... Figure 22 As shown, there are also cases where the action cycle of the jitter correction lens 76 based on the jitter correction drive mechanism 174 is not synchronized with the frame cycle.

[0190] Furthermore, in Figures 17-21 The example shown illustrates the case where the displacement drive mechanism 188 moves the jitter correction lens 76 along both the +X and +Y axes. However, when the displacement drive mechanism 188 moves the jitter correction lens 76 only along the +X axis, similarly, the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188 can overlap with the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174. Similarly, when the displacement drive mechanism 188 moves the jitter correction lens 76 only along the +Y axis, similarly, the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188 can overlap with the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174.

[0191] Furthermore, as an example, such as Figure 23As shown, when the displacement drive mechanism 188 moves the jitter correction lens 76 along at least one of the -X-axis and -Y-axis directions, similarly to the above, the amount of movement of the jitter correction lens 76 based on the displacement drive mechanism 188 can overlap with the amount of movement of the jitter correction lens 76 based on the jitter correction drive mechanism 174.

[0192] Next, refer to Figure 24 and Figure 25 The function of the surveillance camera 10 according to the first embodiment (the operation of the surveillance camera 10) will be explained.

[0193] First, the shake correction process in shake correction / displacement processing will be explained. The CPU92 of the lens device 70 determines whether the transceiver interface (not shown) of the lens device 70 has received a shake correction command sent from the CPU42 of the monitoring camera body 20. When the determination is affirmative, it executes... Figure 24 The jitter correction process shown.

[0194] First, in step ST100, the acquisition unit 200 (reference) Figure 10 The acquisition unit 200 acquires the jitter correction command sent from the CPU 42 of the surveillance camera body 20. Furthermore, in step ST102, the acquisition unit 200 acquires the jitter detection result sent from the CPU 42 of the surveillance camera body 20. Additionally, the acquisition unit 200 acquires the position detection result detected by the X-axis position sensor 136 and the position detection result detected by the Y-axis position sensor 138.

[0195] In the next step ST104, the calculation unit 202 calculates the motion direction and motion amount of the jitter in the X-axis direction of the correction image 210 for the X-axis VCM 120 based on the jitter detection result detected by the jitter detection sensor 56. Similarly, the calculation unit 202 calculates the motion direction and motion amount of the jitter in the Y-axis direction of the correction image 210 for the Y-axis VCM 122 based on the jitter detection result detected by the jitter detection sensor 56.

[0196] In the next step ST106, the control unit 204 (reference) Figure 11 The X-axis VCM120's motion direction and motion amount, calculated by the calculation unit 202, are used as target values, and the X-axis position sensor 136 (reference) is used as the reference value. Figure 10The detected position result controls the X-axis VCM 120. For example, when image 210 jitters along the -X-axis direction, the control unit 204 moves the X-axis VCM 120 in the direction that moves image 210 along the +X-axis direction, and when image 210 jitters along the +X-axis direction, it moves the X-axis VCM 120 in the direction that moves image 210 along the -X-axis direction. As a result, the jitter correction lens 76 moves in the direction that corrects the jitter in the X-axis direction of image 210, thereby correcting the jitter in the X-axis direction of image 210.

[0197] Similarly, the control unit 204 uses the movement direction and movement amount of the Y-axis VCM122 calculated by the calculation unit 202 as target values, and then uses the position sensor 138 (reference) as the reference value. Figure 10 The detected position result controls the Y-axis VCM122. For example, when image 210 jitters along the -Y-axis direction, the control unit 204 moves the Y-axis VCM122 in the direction that moves image 210 along the +Y-axis direction, and when image 210 jitters along the +Y-axis direction, it moves the Y-axis VCM122 in the direction that moves image 210 along the -Y-axis direction. As a result, the jitter correction lens 76 moves in the direction that corrects the jitter in the Y-axis direction of image 210, thereby correcting the jitter in the Y-axis direction of image 210.

[0198] Next, the displacement processing in the shake correction / displacement processing will be explained. The CPU92 of the lens device 70 determines whether the transceiver interface (not shown) of the lens device 70 has received an image displacement command sent from the CPU42 of the monitoring camera body 20. When the determination is affirmative, it executes... Figure 25 The displacement processing is shown.

[0199] First, in step ST110, the acquisition unit 200 (reference) Figure 12 The acquisition unit 200 acquires image displacement commands sent from the CPU 42 of the surveillance camera body 20. These image displacement commands are categorized into X-axis image displacement commands (representing the displacement and amount of the image in the X-axis direction), Y-axis image displacement commands (representing the displacement and amount of the image in the Y-axis direction), and XY-axis image displacement commands (representing the displacement and amount of the image in both the X-axis and Y-axis directions). Furthermore, in step ST112, the acquisition unit 200 acquires frame period information sent from the CPU 42 of the surveillance camera body 20. Additionally, the acquisition unit 200 acquires the position detection results detected by the X-axis position sensor 136 and the position detection results detected by the Y-axis position sensor 138.

[0200] In the next step ST114, when the acquisition unit 200 acquires the X-axis image displacement command, the calculation unit 202 calculates the amount of movement of the X-axis piezoelectric element 124 for each frame period based on the displacement amount of the image represented by the X-axis image displacement command, the frame period represented by the frame period information, and the position detection result detected by the X-axis position sensor 136.

[0201] Similarly, when the acquisition unit 200 acquires the Y-axis image displacement command, the calculation unit 202 calculates the amount of movement of the Y-axis piezoelectric element 126 for each frame period based on the image displacement amount represented by the Y-axis image displacement command, the frame period represented by the frame period information, and the position detection result detected by the Y-axis position sensor 138.

[0202] Furthermore, when the acquisition unit 200 acquires the XY axis image displacement command, the calculation unit 202 calculates the operation amount of the X-axis piezoelectric element 124 in the same manner as when the acquisition unit 200 acquires the X-axis image displacement command, and calculates the operation amount of the Y-axis piezoelectric element 126 in the same manner as when the acquisition unit 200 acquires the Y-axis image displacement command.

[0203] In the next step ST116, when the acquisition unit 200 acquires the X-axis image displacement command, the control unit 204 (reference) Figure 13 The X-axis piezoelectric element 124 is controlled according to the amount of motion of the X-axis piezoelectric element 124 calculated by the calculation unit 202. As a result, the jitter correction lens 76 moves in the direction that causes the image 210 to be displaced along the +X-axis direction for each frame period, thereby displacing the image 210 along the +X-axis direction.

[0204] Similarly, when the acquisition unit 200 acquires the Y-axis image displacement command, the control unit 204 controls the Y-axis piezoelectric element 126 according to the operation amount of the Y-axis piezoelectric element 126 calculated by the calculation unit 202. As a result, the jitter correction lens 76 moves in the direction that causes the image 210 to be displaced along the +Y-axis direction for each frame period, thereby displacing the image 210 along the +Y-axis direction.

[0205] Furthermore, when the acquisition unit 200 acquires an XY-axis image displacement command, the control unit 204 controls the X-axis piezoelectric element 124 based on the operation amount of the X-axis piezoelectric element 124 calculated by the calculation unit 202, and controls the Y-axis piezoelectric element 126 based on the operation amount of the Y-axis piezoelectric element 126 calculated by the calculation unit 202. Thus, in each frame cycle, the jitter correction lens 76 moves in the direction that displaces the image 210 in both the +X-axis and +Y-axis directions, thereby displacing the image 210 along both the +X-axis and +Y-axis directions.

[0206] The aforementioned jitter correction and displacement processing are performed independently of each other. Therefore, when a jitter correction and displacement processing is generated by surveillance camera 10 (reference...) Figure 1 When shaking (etc.), in such Figure 13 When controlling the displacement of image 210 as shown, the jitter correction lens 76 performs the following actions.

[0207] That is, such as Figure 17 As shown, when jitter occurs in the -X-axis direction in image 210, when image 210 is displaced along the +X-axis direction, the jitter correction lens 76 moves by an amount equal to the movement of the jitter correction lens 76 in the +X-axis direction based on the jitter correction drive mechanism 174 plus the movement of the jitter correction lens 76 in the +X-axis direction based on the displacement drive mechanism 188. Thus, image 210 moves by an amount A equal to the movement A1 that corrects the jitter of image 210 plus the movement A2 that displaces image 210, thereby displacing image 210 to the position specified by the X-axis image displacement command.

[0208] And, as Figure 18 As shown, when jitter occurs in the +X-axis direction in image 210, as image 210 is displaced along the +X-axis direction, the jitter correction lens 76 moves by an amount equal to the movement of the jitter correction lens 76 in the -X-axis direction based on the jitter correction drive mechanism 174 minus the movement of the jitter correction lens 76 in the +X-axis direction based on the displacement drive mechanism 188. Consequently, image 210 moves by an amount B equal to the movement B1 that corrects the jitter in image 210 minus the movement B2 that displaces image 210, thereby displacing image 210 to the position specified by the X-axis image displacement command.

[0209] And, as Figure 19 As shown, when jitter occurs in the -Y-axis direction in image 210, when image 210 is displaced along the +Y-axis direction, the jitter correction lens 76 moves by an amount equal to the movement of the jitter correction lens 76 in the +Y-axis direction based on the jitter correction drive mechanism 174 plus the movement of the jitter correction lens 76 in the +Y-axis direction based on the displacement drive mechanism 188. Thus, image 210 moves by an amount C equal to the movement C1 that corrects the jitter of image 210 plus the movement C2 that displaces image 210, thereby displacing image 210 to the position specified by the Y-axis image displacement command.

[0210] And, as Figure 20 As shown, when jitter occurs in the +Y axis direction in image 210, as image 210 is displaced along the +Y axis direction, the jitter correction lens 76 moves by an amount equal to the movement of the jitter correction lens 76 in the -Y axis direction based on the jitter correction drive mechanism 174 minus the movement of the jitter correction lens 76 in the +Y axis direction based on the displacement drive mechanism 188. Consequently, image 210 moves by an amount D equal to the movement D1 that corrects the jitter in image 210 minus the movement D2 that displaces image 210, thereby displacing image 210 to the position specified by the Y-axis image displacement command.

[0211] In addition, referring to the above Figure 24 and Figure 25 The method for operating the surveillance camera 10 described herein is an example of the "method of operating a camera device" according to the technology of this invention. Furthermore, referring to the above... Figure 24 and Figure 25 The method of operating the lens device 70 included in the method for making the surveillance camera 10 work is an example of the "method of operating the lens device" involved in the technology of the present invention.

[0212] Next, the effects of the first embodiment will be explained.

[0213] like Figure 7 and Figure 8 As shown, the lens assembly 70 includes a jitter correction / displacement drive mechanism 150. The jitter correction / displacement drive mechanism 150 includes a jitter correction drive mechanism 174 that moves the jitter correction lens 76 in the direction of correcting image jitter, and a displacement drive mechanism 188 that moves the jitter correction lens 76 in the direction of image displacement. Therefore, for example, compared to the case where the jitter correction drive mechanism 174 moves the jitter correction lens 76 to correct image jitter and thus displaces the image, image jitter correction and image displacement can be performed with high accuracy.

[0214] And, as Figures 10-13 As shown, the CPU 92 of the lens assembly 70 controls the jitter correction drive mechanism 174 to move the jitter correction lens 76 in the direction of correcting image jitter, and controls the displacement drive mechanism 188 to move the jitter correction lens 76 in the direction of image displacement. Therefore, the CPU 92 can control both the jitter correction drive mechanism 174 and the displacement drive mechanism 188 within the lens assembly 70.

[0215] And, as Figures 17-20 As shown, in the lens assembly 70, when the displacement drive mechanism 188 moves the jitter correction lens 76 in the direction that the jitter correction drive mechanism 174 moves the jitter correction lens 76, the jitter correction lens 76 moves by an amount equal to the sum of the movement amount of the jitter correction lens 76 based on the jitter correction drive mechanism 174 and the movement amount of the jitter correction lens 76 based on the displacement drive mechanism 188. Therefore, the image can be shifted to the position specified by the image shift command. Furthermore, in the lens assembly 70, when the displacement drive mechanism 188 moves the jitter correction lens 76 in the direction opposite to the movement direction of the jitter correction drive mechanism 174, the jitter correction lens 76 moves by an amount equal to the difference between the movement amount of the jitter correction lens 76 based on the jitter correction drive mechanism 174 and the movement amount of the jitter correction lens 76 based on the displacement drive mechanism 188. The image can be shifted to the position specified by the image shift command.

[0216] And, as Figure 13 As shown, the CPU 92 of the lens device 70 controls the displacement drive mechanism 188 to move the jitter correction lens 76 in the direction of image displacement based on frame-by-frame imaging (for example, each frame-by-frame imaging). Therefore, image displacement can be achieved based on frame-by-frame imaging based on the image sensor 24.

[0217] And, as Figure 13 As shown, the CPU 92 of the lens assembly 70 controls the displacement drive mechanism 188 to move the jitter correction lens 76 to a position where the image displacement is greater than or less than the pixel pitch of the image sensor 24. Therefore, as an example, such as... Figure 12 As shown, by synthesizing the multiple frames of image 212, a synthesized image 214 can be obtained.

[0218] And, as Figure 13 As shown, the displacement drive mechanism 188 has an X-axis piezoelectric element 124 and a Y-axis piezoelectric element 126. The X-axis piezoelectric element 124 moves the jitter correction lens 76 by applying power to it along the X-axis direction, and the Y-axis piezoelectric element 126 moves the jitter correction lens 76 by applying power to it along the Y-axis direction. Then, the CPU 92 of the lens device 70 selectively controls the displacement drive mechanism 188 by switching between the presence and absence of power from the X-axis piezoelectric element 124 and the Y-axis piezoelectric element 126 (see reference). Figures 14-16 Therefore, it is possible to obtain images with different displacements in the X-axis and Y-axis directions based on the frame-by-frame imaging.

[0219] And, as Figure 13 As shown, the X-axis piezoelectric element 124 moves the jitter correction lens 76 by applying force along the X-axis direction, and the Y-axis piezoelectric element 126 moves the jitter correction lens 76 by applying force along the Y-axis direction. Therefore, the jitter correction lens 76 can be moved independently along the X-axis and Y-axis directions by the X-axis piezoelectric element 124 and the Y-axis piezoelectric element 126.

[0220] And, as Figure 7 and Figure 8As shown, the jitter correction / displacement drive mechanism 150 includes a holding member 152 for holding the jitter correction lens 76, a first support member 154 supporting the holding member 152 so that it can move along the XY coordinate plane, and a second support member 156 supporting the first support member 154 so that it can move along the XY coordinate plane. A jitter correction drive mechanism 174 is disposed between the holding member 152 and the first support member 154, and a displacement drive mechanism 188 is disposed between the first support member 154 and the second support member 156. Therefore, the movement of the jitter correction lens 76 for correcting image jitter and the movement of the jitter correction lens 76 for image displacement can be performed independently.

[0221] And, as Figure 7 and Figure 8 As shown, the jitter correction drive mechanism 174 has a voice coil motor, and the displacement drive mechanism 188 has a piezoelectric element. Therefore, the movement of the jitter correction lens 76 for correcting image jitter and the movement of the jitter correction lens 76 for image displacement can be achieved with a simple structure.

[0222] And, as Figure 7 and Figure 8 As shown, the displacement drive mechanism 188 has an X-axis leaf spring 158 disposed opposite to the X-axis piezoelectric element 124. Therefore, when the X-axis piezoelectric element 124 is stopped, the jitter correction lens 76 can be returned to its original position before moving along the X-axis direction by the elastic force of the X-axis leaf spring 158. Similarly, the displacement drive mechanism 188 has a Y-axis leaf spring 160 disposed opposite to the Y-axis piezoelectric element 126. Therefore, when the Y-axis piezoelectric element 126 is stopped, the jitter correction lens 76 can be returned to its original position before moving along the Y-axis direction by the elastic force of the Y-axis leaf spring 160.

[0223] And, as Figure 7 and Figure 8 As shown, the jitter correction drive mechanism 174 has an X-axis VCM 120 and a Y-axis VCM 122. The X-axis VCM 120 is disposed between the holding member 152 and the first support member 154, and generates power in the X-axis direction. The Y-axis VCM 122 is disposed between the holding member 152 and the first support member 154, and generates power in the Y-axis direction. Therefore, the jitter correction lens 76 can be moved independently in the X-axis direction and the Y-axis direction by means of the X-axis VCM 120 and the Y-axis VCM 122.

[0224] And, as Figure 7 and Figure 8As shown, the displacement drive mechanism 188 has an X-axis piezoelectric element 124 and a Y-axis piezoelectric element 126. The X-axis piezoelectric element 124 is disposed between the first support member 154 and the second support member 156, generating power in the X-axis direction. The Y-axis piezoelectric element 126 is disposed between the first support member 154 and the second support member 156, generating power in the Y-axis direction. Therefore, the jitter correction lens 76 can be moved independently along the X-axis and Y-axis directions by means of the X-axis piezoelectric element 124 and the Y-axis piezoelectric element 126.

[0225] And, as Figure 3 As shown, the filter unit 80 of the lens assembly 70 includes multiple BPFs 88. The filter unit 80 is positioned closer to the subject than the image sensor 24, and the multiple BPFs 88 allow near-infrared light contained in the light to be transmitted. Therefore, by imaging the image sensor 24 with near-infrared light, a near-infrared light image can be obtained.

[0226] And, as Figures 14-16 As shown, the CPU 42 of the surveillance camera body 20 causes the image sensor 24 to capture images based on the image displacement (for example, each time the image is displaced), and synthesizes the multiple frames of images 212 obtained through the capture. Therefore, a synthesized image 214 can be obtained.

[0227] [Second Implementation]

[0228] Next, the second embodiment will be described. As an example, such as Figure 26 and Figure 27 As shown, a jitter correction / displacement drive mechanism 250 is used in the second embodiment. This differs from the jitter correction / displacement drive mechanism 150 of the first embodiment (see reference). Figure 7 and Figure 8 The structure of the jitter correction / displacement drive mechanism 250 has been modified as follows. Furthermore, in the second embodiment, the same symbols are used for elements and components as in the first embodiment, and detailed descriptions are omitted.

[0229] The jitter correction / displacement drive mechanism 250 according to the second embodiment includes a holding member 252, a first support member 254, a second support member 256, an X-axis VCM 120, a Y-axis VCM 122, an X-axis piezoelectric element 124, a Y-axis piezoelectric element 126, an X-axis leaf spring 158, and a Y-axis leaf spring 160. The structure of the X-axis VCM 120, Y-axis VCM 122, X-axis piezoelectric element 124, Y-axis piezoelectric element 126, X-axis leaf spring 158, and Y-axis leaf spring 160 is the same as that in the first embodiment. However, the arrangement of the X-axis piezoelectric element 124, Y-axis piezoelectric element 126, X-axis leaf spring 158, and Y-axis leaf spring 160 is different from that in the first embodiment.

[0230] The retaining member 252 is formed in a circular shape. A jitter correction lens 76 is provided on the inner side of the retaining member 252. The outer periphery of the jitter correction lens 76 is fixed to the inner periphery of the retaining member 252. The jitter correction lens 76 is held in the retaining member 252 by fixing its outer periphery to the inner periphery of the retaining member 252. When the X-axis VCM 120, Y-axis VCM 122, X-axis piezoelectric element 124, and Y-axis piezoelectric element 126 are not operating and no jitter is generated in the monitoring camera 10, the center of the jitter correction lens 76 is located on the optical axis OA.

[0231] The first support member 254 is formed in a generally plate-like shape. The first support member 254 is arranged with the Z-axis direction as the plate thickness direction. A through hole 266 is formed in the first support member 254 along the Z-axis direction. The cross-sectional shape of the hole 266 viewed from the axial direction is circular, and its diameter is larger than or equal to the diameter of the retaining member 252. An X-axis piezoelectric element 124, a Y-axis piezoelectric element 126, an X-axis leaf spring 158, and a Y-axis leaf spring 160 are disposed between the retaining member 252 and the first support member 254. The retaining member 252 is supported by the first support member 254 via the X-axis piezoelectric element 124, the Y-axis piezoelectric element 126, the X-axis leaf spring 158, and the Y-axis leaf spring 160, enabling it to move along the XY coordinate plane. When the X-axis VCM120, Y-axis VCM122, X-axis piezoelectric element 124 and Y-axis piezoelectric element 126 are not operating and there is no shaking in the monitoring camera 10, the center of the hole 266 is located on the optical axis OA.

[0232] The second support member 256 is fixed to the housing 70A of the lens assembly 70. The housing 70A of the lens assembly 70, in addition to supporting the shake correction lens 76 and the shake correction / displacement drive mechanism 250, also supports the aforementioned objective lens 72, zoom lens 74, aperture 78, filter unit 80, and main lens 82 (see reference). Figure 2 The second support member 256 is fixed to the housing 70A of the lens device 70.

[0233] As an example, the second support member 256 is formed in a generally plate-like shape. The second support member 256 is arranged with the Z-axis direction as the plate thickness direction. The second support member 256 is arranged opposite to the first support member 254 in the Z-axis direction. A hole 272 is formed in the second support member 256, extending through the Z-axis direction. The cross-sectional shape of the hole 272 when viewed from the axial direction is circular. The hole 272 is formed with a diameter greater than or equal to the diameter of the jitter correction lens 76. The center of the hole 272 is located on the optical axis OA. By arranging a sliding member such as a ball (not shown) between the first support member 254 and the second support member 256, the first support member 254 is supported by the second support member 256 and is able to move along the XY coordinate plane.

[0234] The X-axis VCM120 and Y-axis VCM122 form a jitter correction drive mechanism 274. The jitter correction drive mechanism 274 is an example of the "first drive mechanism" according to the present invention. The jitter correction drive mechanism 274 is disposed between the first support member 254 and the second support member 256. The jitter correction drive mechanism 274 moves the jitter correction lens 76 along the XY coordinate plane by applying force to the jitter correction lens 76 in the direction of jitter in the corrected image along the XY coordinate plane. That is, the X-axis VCM120 applies force to the jitter correction lens 76 in the direction of jitter in the X-axis direction of the corrected image, causing the jitter correction lens 76 to move along the X-axis direction, and the Y-axis VCM122 applies force to the jitter correction lens 76 in the direction of jitter in the Y-axis direction of the corrected image, causing the jitter correction lens 76 to move along the Y-axis direction.

[0235] As an example, the X-axis VCM120 is positioned relative to the jitter correction lens 76 in the +X-axis direction. Alternatively, the X-axis VCM120 can also be positioned relative to the jitter correction lens 76 in the -X-axis direction. The X-axis VCM120 is located between the first support member 254 and the second support member 256 in the Z-axis direction. As an example, the X-axis VCM120 is a flat coil voice coil motor, having a coil 176 and a pair of magnets 178 and 180.

[0236] As an example, coil 176 is fixed to the first support member 254, and a pair of magnets 178 and 180 are fixed to the second support member 256. Alternatively, coil 176 can also be fixed to the second support member 256, and the pair of magnets 178 and 180 can also be fixed to the first support member 254. Coil 176 is arranged with the Z-axis direction as its axial direction, and the pair of magnets 178 and 180 are arranged in the X-axis direction. The N pole of magnet 178 is opposite to coil 176, and the S pole of magnet 180 is opposite to coil 176.

[0237] The X-axis VCM120 generates power in the X-axis direction. The direction of the current flowing through coil 176 is determined by the X-axis VCM driver 104 (reference). Figure 6Switching. By switching the direction of the current flowing through coil 176, the direction of the force exerted on coil 176 by a pair of magnets 178 and 180 is switched. When coil 176 is subjected to a force from a pair of magnets 178 and 180 along the +X-axis, the first support member 254, the holding member 252, and the jitter correction lens 76 are powered along the +X-axis, and the first support member 254, the holding member 252, and the jitter correction lens 76 move along the +X-axis. When coil 176 is subjected to a force from a pair of magnets 178 and 180 along the -X-axis, the first support member 254, the holding member 252, and the jitter correction lens 76 are powered along the -X-axis, and the first support member 254, the holding member 252, and the jitter correction lens 76 move along the -X-axis. Thus, by applying power using the X-axis VCM 120, the jitter correction lens 76 moves in the X-axis direction, thereby correcting the jitter in the X-axis direction of the image.

[0238] As an example, the Y-axis VCM122 is positioned relative to the jitter correction lens 76 in the -Y-axis direction. Alternatively, the Y-axis VCM122 can also be positioned relative to the jitter correction lens 76 in the +Y-axis direction. The Y-axis VCM122 is located between the first support member 254 and the second support member 256 in the Z-axis direction. As an example, the Y-axis VCM122 is a flat coil voice coil motor, having a coil 182 and a pair of magnets 184 and 186.

[0239] As an example, coil 182 is fixed to the first support member 254, and a pair of magnets 184 and 186 are fixed to the second support member 256. Alternatively, coil 182 can also be fixed to the second support member 256, and the pair of magnets 184 and 186 can also be fixed to the first support member 254. Coil 182 is arranged with the Z-axis direction as its axial direction, and the pair of magnets 184 and 186 are arranged in the Y-axis direction. The N pole of magnet 184 is opposite to coil 182, and the S pole of magnet 186 is opposite to coil 182.

[0240] The Y-axis VCM122 generates power in the Y-axis direction. The direction of the current flowing through the coil 182 is determined by the Y-axis VCM driver 106 (reference). Figure 6Switching. By switching the direction of the current flowing through coil 182, the direction of the force exerted on coil 182 by a pair of magnets 184 and 186 is switched. When coil 182 is subjected to a force from a pair of magnets 184 and 186 along the +Y axis, force is applied to the first support member 254, holding member 252, and jitter correction lens 76 along the +Y axis, causing them to move. When coil 182 is subjected to a force from a pair of magnets 184 and 186 along the -Y axis, force is applied to the first support member 254, holding member 252, and jitter correction lens 76 along the -Y axis, causing them to move. Thus, by applying force using the Y-axis VCM122, the jitter correction lens 76 moves in the Y-axis direction, thereby correcting jitter in the Y-axis direction of the image.

[0241] Additionally, as an example, the X-axis VCM120 is a flat coil voice coil motor with coil 176 and a pair of magnets 178 and 180 facing each other axially on coil 176. However, the X-axis VCM120 can also be a square coil voice coil motor with coil 176 arranged between a pair of magnets 178 and 180 facing each other radially on coil 176. Similarly, as an example, the Y-axis VCM122 is a flat coil voice coil motor with coil 182 and a pair of magnets 184 and 186 facing each other axially on coil 182. However, the Y-axis VCM122 can also be a square coil voice coil motor with coil 182 arranged between a pair of magnets 184 and 186 facing each other radially on coil 182.

[0242] The X-axis piezoelectric element 124, the Y-axis piezoelectric element 126, the X-axis leaf spring 158, and the Y-axis leaf spring 160 form a displacement drive mechanism 288. The displacement drive mechanism 288 is an example of the "second drive mechanism" involved in the technology of this invention.

[0243] The displacement drive mechanism 288 is disposed between the holding member 252 and the first support member 254. The displacement drive mechanism 288 moves the jitter correction lens 76 along the XY coordinate plane by applying power to the jitter correction lens 76 in the direction of image displacement along the XY coordinate plane. That is, the X-axis piezoelectric element 124 moves the jitter correction lens 76 along the X-axis direction by applying power to the jitter correction lens 76 in the direction of image displacement along the X-axis direction, and the Y-axis piezoelectric element 126 moves the jitter correction lens 76 along the Y-axis direction by applying power to the jitter correction lens 76 in the direction of image displacement along the Y-axis direction.

[0244] As an example, the X-axis piezoelectric element 124 is disposed in the X-axis direction relative to the holding member 252. The X-axis piezoelectric element 124 is disposed between the holding member 252 and the first support member 254 in the X-axis direction. Alternatively, an actuator such as a DC motor that generates the same power as the piezoelectric element may be used instead of the X-axis piezoelectric element 124.

[0245] The X-axis leaf spring 158 is positioned opposite the X-axis piezoelectric element 124. That is, the X-axis leaf spring 158 is positioned relative to the retaining member 252 in the +X-axis direction. The X-axis leaf spring 158 is disposed between the retaining member 252 and the first support member 254 in the X-axis direction. As an example, the X-axis leaf spring 158 is a U-shaped or V-shaped leaf spring. Alternatively, the X-axis piezoelectric element 124 may also be positioned relative to the retaining member 252 in the +X-axis direction, and the X-axis leaf spring 158 may also be positioned relative to the retaining member 252 in the -X-axis direction. Furthermore, the X-axis leaf spring 158 may be a leaf spring of a shape other than U-shaped or V-shaped. Additionally, elastic components such as coil springs, torsion springs, rubber, or sponges may be used instead of the X-axis leaf spring 158.

[0246] The X-axis piezoelectric element 124 generates power in the X-axis direction. The X-axis piezoelectric element 124 is configured to generate power in the +X-axis direction. The presence or absence of power supplied to the X-axis piezoelectric element 124 is determined by the X-axis piezoelectric element driver 108 (see reference). Figure 6 Switching. If power is supplied to the X-axis piezoelectric element 124, the X-axis piezoelectric element 124 operates; if the power supply to the X-axis piezoelectric element 124 is stopped, the X-axis piezoelectric element 124 stops. When the X-axis piezoelectric element 124 operates, it applies power to the holding member 252 and the jitter correction lens 76 along the +X axis direction. The holding member 252 and the jitter correction lens 76 move along the +X axis direction against the elastic force of the X-axis leaf spring 158. Thus, by applying power using the X-axis piezoelectric element 124, the jitter correction lens 76 moves, thereby displacing the image along the +X axis direction. If the X-axis piezoelectric element 124 stops operating, the elastic force of the X-axis leaf spring 158 in the -X axis direction acts on the holding member 252 and the jitter correction lens 76, causing the holding member 252 and the jitter correction lens 76 to move along the -X axis direction and return to their original positions.

[0247] As an example, the Y-axis piezoelectric element 126 is disposed in the Y-axis direction relative to the holding member 252. The Y-axis piezoelectric element 126 is disposed between the holding member 252 and the first support member 254 in the Y-axis direction. Alternatively, an actuator such as a DC motor that generates the same power as the piezoelectric element may be used instead of the Y-axis piezoelectric element 126.

[0248] The Y-axis leaf spring 160 is positioned opposite the Y-axis piezoelectric element 126. That is, the Y-axis leaf spring 160 is positioned relative to the retaining member 252 in the +Y-axis direction. The Y-axis leaf spring 160 is disposed between the retaining member 252 and the first support member 254 in the Y-axis direction. As an example, the Y-axis leaf spring 160 is a U-shaped or V-shaped leaf spring. Alternatively, the Y-axis piezoelectric element 126 may also be positioned relative to the retaining member 252 in the +Y-axis direction, and the Y-axis leaf spring 160 may also be positioned relative to the retaining member 252 in the -Y-axis direction. Furthermore, the Y-axis leaf spring 160 may be a leaf spring of a shape other than U-shaped or V-shaped. Additionally, elastic components such as coil springs, torsion springs, rubber, or sponges may be used instead of the Y-axis leaf spring 160.

[0249] The Y-axis piezoelectric element 126 generates power in the Y-axis direction. The Y-axis piezoelectric element 126 is configured to generate power in the +Y-axis direction. The presence or absence of power supplied to the Y-axis piezoelectric element 126 is determined by the Y-axis piezoelectric element driver 110 (see reference). Figure 6 Switching. If power is supplied to the Y-axis piezoelectric element 126, the Y-axis piezoelectric element 126 operates; if the power supply to the Y-axis piezoelectric element 126 is stopped, the Y-axis piezoelectric element 126 stops. When the Y-axis piezoelectric element 126 operates, it applies power to the holding member 252 and the jitter correction lens 76 along the +Y axis direction. The holding member 252 and the jitter correction lens 76 move along the +Y axis direction against the elastic force of the Y-axis leaf spring 160. Thus, by applying power using the Y-axis piezoelectric element 126, the jitter correction lens 76 moves, thereby displacing the image along the +Y axis direction. If the Y-axis piezoelectric element 126 stops operating, the elastic force of the Y-axis leaf spring 160 in the -Y axis direction acts on the holding member 252 and the jitter correction lens 76, causing the holding member 252 and the jitter correction lens 76 to move along the -Y axis direction and return to their original positions.

[0250] In the second embodiment, the surveillance camera 10 uses a jitter correction / displacement drive mechanism 250 instead of the jitter correction / displacement drive mechanism 150 described above (see reference). Figure 7 and Figure 8 Apart from this, it has the same structure as the first embodiment and operates in the same way as the first embodiment. Other aspects of the operation of the surveillance camera 10 will be omitted with reference to the description of the first embodiment described above.

[0251] Next, the effects of the second embodiment will be explained.

[0252] The jitter correction / displacement drive mechanism 250 includes a jitter correction drive mechanism 274 that moves the jitter correction lens 76 in the direction of correcting image jitter and a displacement drive mechanism 288 that moves the jitter correction lens 76 in the direction of image displacement. Therefore, for example, compared to the case where the jitter correction drive mechanism 274 moves the jitter correction lens 76 to correct image jitter and thus displaces the image, image jitter correction and image displacement can be performed with good accuracy.

[0253] Furthermore, when the displacement drive mechanism 288 moves the jitter correction lens 76 in the direction that the jitter correction drive mechanism 274 moves the jitter correction lens 76, the jitter correction lens 76 moves by an amount equal to the sum of the movement amount of the jitter correction lens 76 based on the jitter correction drive mechanism 274 and the movement amount of the jitter correction lens 76 based on the displacement drive mechanism 288. Therefore, the image can be shifted to the position specified by the image shift command. Furthermore, when the displacement drive mechanism 288 moves the jitter correction lens 76 in the opposite direction to the movement direction of the jitter correction drive mechanism 274, the jitter correction lens 76 moves by an amount equal to the difference between the movement amount of the jitter correction lens 76 based on the jitter correction drive mechanism 274 and the movement amount of the jitter correction lens 76 based on the displacement drive mechanism 288. Therefore, the image can be shifted to the position specified by the image shift command.

[0254] Furthermore, the X-axis piezoelectric element 124 moves the jitter correction lens 76 by applying power along the X-axis direction, and the Y-axis piezoelectric element 126 moves the jitter correction lens 76 by applying power along the Y-axis direction. Therefore, the jitter correction lens 76 can be moved independently along the X-axis and Y-axis directions by the X-axis piezoelectric element 124 and the Y-axis piezoelectric element 126.

[0255] Furthermore, the jitter correction / displacement drive mechanism 250 includes a holding member 252 for holding the jitter correction lens 76, a first support member 254 supporting the holding member 252 so that it can move along the XY coordinate plane, and a second support member 256 supporting the first support member 254 so that it can move along the XY coordinate plane. A jitter correction drive mechanism 274 is disposed between the first support member 254 and the second support member 256, and a displacement drive mechanism 288 is disposed between the holding member 252 and the first support member 254. Therefore, the movement of the jitter correction lens 76 for correcting image jitter and the movement of the jitter correction lens 76 for image displacement can be performed independently.

[0256] Furthermore, the jitter correction drive mechanism 274 has a voice coil motor, and the displacement drive mechanism 288 has a piezoelectric element. Therefore, the movement of the jitter correction lens 76 for correcting image jitter and the movement of the jitter correction lens 76 for image displacement can be achieved with a simple structure.

[0257] Furthermore, the displacement drive mechanism 288 includes an X-axis leaf spring 158 positioned opposite the X-axis piezoelectric element 124. Therefore, when the X-axis piezoelectric element 124 is stopped, the jitter correction lens 76 can be returned to its original position before movement along the X-axis direction by the elastic force of the X-axis leaf spring 158. Similarly, the displacement drive mechanism 288 includes a Y-axis leaf spring 160 positioned opposite the Y-axis piezoelectric element 126. Therefore, when the Y-axis piezoelectric element 126 is stopped, the jitter correction lens 76 can be returned to its original position before movement along the Y-axis direction by the elastic force of the Y-axis leaf spring 160.

[0258] Furthermore, the jitter correction drive mechanism 274 has an X-axis VCM 120 and a Y-axis VCM 122. The X-axis VCM 120 is disposed between the first support member 254 and the second support member 256, generating power in the X-axis direction. The Y-axis VCM 122 is disposed between the first support member 254 and the second support member 256, generating power in the Y-axis direction. Therefore, the jitter correction lens 76 can be moved independently along the X-axis and Y-axis directions via the X-axis VCM 120 and the Y-axis VCM 122.

[0259] Furthermore, the displacement drive mechanism 288 includes an X-axis piezoelectric element 124 and a Y-axis piezoelectric element 126. The X-axis piezoelectric element 124 is disposed between the holding member 252 and the first support member 254, generating power in the X-axis direction. The Y-axis piezoelectric element 126 is disposed between the holding member 252 and the first support member 254, generating power in the Y-axis direction. Therefore, the jitter correction lens 76 can be moved independently along the X-axis and Y-axis directions by means of the X-axis piezoelectric element 124 and the Y-axis piezoelectric element 126.

[0260] In the second embodiment, the same structure as in the first embodiment yields the same function and effect as in the first embodiment.

[0261] [Third Implementation]

[0262] Next, the third embodiment will be described. As an example, such as Figure 28 and Figure 29 As shown, a jitter correction / displacement drive mechanism 350 is used in the third embodiment. This differs from the jitter correction / displacement drive mechanism 150 of the first embodiment (see reference 150). Figure 7 and Figure 8The structure of the jitter correction / displacement drive mechanism 350 has been modified as follows. Furthermore, in this third embodiment, the same symbols are used for elements and components as in the first embodiment, and detailed descriptions are omitted.

[0263] The jitter correction / displacement drive mechanism 350 according to the third embodiment includes a holding member 352, a first support member 354, a second support member 356, an X-axis VCM 120, a Y-axis VCM 122, a piezoelectric element 358, and a leaf spring 360. The structures of the X-axis VCM 120 and the Y-axis VCM 122 are the same as those in the first embodiment. Furthermore, the structure of the piezoelectric element 358 is the same as that of the X-axis piezoelectric element 124 and the Y-axis piezoelectric element 126 in the first embodiment (see reference). Figure 7 and Figure 8 The structure of the leaf spring 360 is the same as that of the X-axis leaf spring 158 and Y-axis leaf spring 160 in the first embodiment (see reference). Figure 7 and Figure 8 The structure is the same as that of the first embodiment. However, the configuration of the X-axis VCM120, Y-axis VCM122, piezoelectric element 358, and leaf spring 360 differs from that in the first embodiment. The piezoelectric element 358 is an example of the "third actuator" according to the technology of the present invention, and the leaf spring 360 is an example of the "elastic member" according to the technology of the present invention.

[0264] The retaining member 352 has a main body 362 and a protrusion 364. The main body 362 is formed in an annular shape, and the protrusion 364 protrudes radially from the main body 362. A shake correction lens 76 is provided on the inner side of the main body 362. The outer periphery of the shake correction lens 76 is fixed to the inner periphery of the main body 362. The shake correction lens 76 is held in the retaining member 352 by fixing its outer periphery to the inner periphery of the main body 362.

[0265] The protrusion 364 is located in the +X and +Y axis directions relative to the main body 362. The protrusion 364 is disposed between the first support member 354 and the second support member 356 in the Z-axis direction. The protrusion 364 is fixed so that it can rotate relative to the first support member 354 via a shaft member 365 extending along the optical axis OA. The retaining member 352 is supported on the first support member 354 in a manner that allows it to rotate about the shaft member 365. When the X-axis VCM120, Y-axis VCM122, and piezoelectric element 358 are not operating and no shaking occurs in the monitoring camera 10, the center of the shake correction lens 76 is located on the optical axis OA.

[0266] The first support member 354 is generally plate-shaped. The first support member 354 is configured with the Z-axis direction as the plate thickness direction. A through hole 366 is formed in the first support member 354 along the Z-axis direction. The cross-sectional shape of the hole 366, viewed axially, is circular, with a diameter greater than or equal to the diameter of the main body 362. A piezoelectric element 358 and a leaf spring 360 are disposed between the retaining member 352 and the first support member 354. The retaining member 352 is supported by the first support member 354 via the piezoelectric element 358 and the leaf spring 360, allowing it to move along the XY coordinate plane. When the X-axis VCM120, Y-axis VCM122, and piezoelectric element 358 are not in operation and no shaking occurs in the monitoring camera 10, the center of the hole 366 is located on the optical axis OA.

[0267] The second support member 356 is fixed to the housing 70A of the lens assembly 70. The housing 70A of the lens assembly 70, in addition to supporting the shake correction lens 76 and the shake correction / displacement drive mechanism 350, also supports the aforementioned objective lens 72, zoom lens 74, aperture 78, filter unit 80, and main lens 82 (see reference). Figure 2 The second support member 356 is fixed to the housing 70A of the lens device 70.

[0268] As an example, the second support member 356 is formed in a generally plate-like shape. The second support member 356 is arranged with the Z-axis direction as the plate thickness direction. The second support member 356 is arranged opposite to the first support member 354 in the Z-axis direction. A hole 372 is formed in the second support member 356, extending through the Z-axis direction. The cross-sectional shape of the hole 372 when viewed from the axial direction is circular. The hole 372 is formed with a diameter greater than or equal to the diameter of the jitter correction lens 76. The center of the hole 372 is located on the optical axis OA. By arranging a sliding member such as a ball (not shown) between the first support member 354 and the second support member 356, the first support member 354 is supported by the second support member 356 and is able to move along the XY coordinate plane.

[0269] The X-axis VCM120 and Y-axis VCM122 form a jitter correction drive mechanism 374. The jitter correction drive mechanism 374 is an example of the "first drive mechanism" according to the present invention. The jitter correction drive mechanism 374 is disposed between the first support member 354 and the second support member 356. The jitter correction drive mechanism 374 moves the jitter correction lens 76 along the XY coordinate plane by applying force to the jitter correction lens 76 in the direction of jitter in the corrected image along the XY coordinate plane. That is, the X-axis VCM120 applies force to the jitter correction lens 76 in the direction of jitter in the X-axis direction of the corrected image, causing the jitter correction lens 76 to move along the X-axis direction, and the Y-axis VCM122 applies force to the jitter correction lens 76 in the direction of jitter in the Y-axis direction of the corrected image, causing the jitter correction lens 76 to move along the Y-axis direction.

[0270] As an example, the X-axis VCM120 is positioned relative to the jitter correction lens 76 in the +X-axis direction. Alternatively, the X-axis VCM120 can also be positioned relative to the jitter correction lens 76 in the -X-axis direction. The X-axis VCM120 is located between the first support member 354 and the second support member 356 in the Z-axis direction. As an example, the X-axis VCM120 is a flat coil voice coil motor, having a coil 176 and a pair of magnets 178 and 180.

[0271] As an example, coil 176 is fixed to the first support member 354, and a pair of magnets 178 and 180 are fixed to the second support member 356. Alternatively, coil 176 can be fixed to the second support member 356, and the pair of magnets 178 and 180 can be fixed to the first support member 354. Coil 176 is arranged with the Z-axis direction as its axial direction, and the pair of magnets 178 and 180 are arranged in the X-axis direction. The N pole of magnet 178 is opposite to coil 176, and the S pole of magnet 180 is opposite to coil 176.

[0272] The X-axis VCM120 generates power in the X-axis direction. The direction of the current flowing through coil 176 is determined by the X-axis VCM driver 104 (reference). Figure 6Switching. By switching the direction of the current flowing through coil 176, the direction of the force exerted on coil 176 by a pair of magnets 178 and 180 is switched. When coil 176 is subjected to a force from a pair of magnets 178 and 180 along the +X-axis, the first support member 354, the holding member 352, and the jitter correction lens 76 are powered along the +X-axis, and the first support member 354, the holding member 352, and the jitter correction lens 76 move along the +X-axis. When coil 176 is subjected to a force from a pair of magnets 178 and 180 along the -X-axis, the first support member 354, the holding member 352, and the jitter correction lens 76 are powered along the -X-axis, and the first support member 354, the holding member 352, and the jitter correction lens 76 move along the -X-axis. Thus, by applying power using the X-axis VCM 120, the jitter correction lens 76 moves in the X-axis direction, thereby correcting the jitter in the X-axis direction of the image.

[0273] As an example, the Y-axis VCM122 is positioned relative to the jitter correction lens 76 in the -Y-axis direction. Alternatively, the Y-axis VCM122 can also be positioned relative to the jitter correction lens 76 in the +Y-axis direction. The Y-axis VCM122 is located between the first support member 354 and the second support member 356 in the Z-axis direction. As an example, the Y-axis VCM122 is a flat coil voice coil motor, having a coil 182 and a pair of magnets 184 and 186.

[0274] As an example, coil 182 is fixed to the first support member 354, and a pair of magnets 184 and 186 are fixed to the second support member 356. Alternatively, coil 182 can also be fixed to the second support member 356, and the pair of magnets 184 and 186 can also be fixed to the first support member 354. Coil 182 is arranged with the Z-axis direction as its axial direction, and the pair of magnets 184 and 186 are arranged in the Y-axis direction. The N pole of magnet 184 is opposite to coil 182, and the S pole of magnet 186 is opposite to coil 182.

[0275] The Y-axis VCM122 generates power in the Y-axis direction. The direction of the current flowing through the coil 182 is determined by the Y-axis VCM driver 106 (reference). Figure 6Switching. By switching the direction of the current flowing through coil 182, the direction of the force exerted on coil 182 by the pair of magnets 184 and 186 is switched. When coil 182 is subjected to a force from the pair of magnets 184 and 186 along the +Y axis, force is applied to the first support member 354, the holding member 352, and the jitter correction lens 76 along the +Y axis, causing them to move. When coil 182 is subjected to a force from the pair of magnets 184 and 186 along the -Y axis, force is applied to the first support member 354, the holding member 352, and the jitter correction lens 76 along the -Y axis, causing them to move. Thus, by applying force using the Y-axis VCM122, the jitter correction lens 76 moves in the Y-axis direction, thereby correcting jitter in the Y-axis direction of the image.

[0276] Additionally, as an example, the X-axis VCM120 is a flat coil voice coil motor with coil 176 and a pair of magnets 178 and 180 facing each other axially on coil 176. However, the X-axis VCM120 can also be a square coil voice coil motor with coil 176 arranged between a pair of magnets 178 and 180 facing each other radially on coil 176. Similarly, as an example, the Y-axis VCM122 is a flat coil voice coil motor with coil 182 and a pair of magnets 184 and 186 facing each other axially on coil 182. However, the Y-axis VCM122 can also be a square coil voice coil motor with coil 182 arranged between a pair of magnets 184 and 186 facing each other radially on coil 182.

[0277] The piezoelectric element 358 and the leaf spring 360 form a displacement drive mechanism 388. The displacement drive mechanism 388 is an example of the "second drive mechanism" according to the present invention. The displacement drive mechanism 388 is disposed between the holding member 352 and the first support member 354. The displacement drive mechanism 388 moves the jitter correction lens 76 along the XY coordinate plane by applying power to the jitter correction lens 76 in the direction of image displacement along the XY coordinate plane.

[0278] As an example, the piezoelectric element 358 is positioned in the +X-axis direction and the -Y-axis direction relative to the main body 362. The piezoelectric element 358 is disposed between the holding member 352 and the first support member 354. Alternatively, an actuator such as a DC motor that generates the same power as the piezoelectric element may be used instead of the piezoelectric element 358.

[0279] The leaf spring 360 is positioned opposite the piezoelectric element 358. That is, the leaf spring 360 is positioned relative to the main body 362 in the -X-axis and +Y-axis directions. The leaf spring 360 is disposed between the retaining member 352 and the first support member 354. As an example, the leaf spring 360 is a U-shaped or V-shaped leaf spring. Alternatively, the protrusion 364 may be located in the +X-axis and -Y-axis directions of the main body 362, the piezoelectric element 358 may be positioned in the -X-axis and -Y-axis directions of the main body 362, and the leaf spring 360 may be positioned in the +X-axis and +Y-axis directions of the main body 362. Furthermore, the protrusion 364 may also be located in the -X-axis and -Y-axis directions of the main body 362, the piezoelectric element 358 may be positioned in the -X-axis and +Y-axis directions of the main body 362, and the leaf spring 360 may be positioned in the +X-axis and +Y-axis directions of the main body 362. Furthermore, the protrusion 364 can be located in the -X-axis direction and +Y-axis direction of the main body 362, the piezoelectric element 358 can be disposed in the +X-axis direction and +Y-axis direction of the main body 362, and the leaf spring 360 can be disposed in the +X-axis direction and -Y-axis direction of the main body 362. The leaf spring 360 can also be a leaf spring of a shape other than U-shaped or V-shaped. Furthermore, elastic components with elasticity, such as coil springs, torsion springs, rubber, or sponges, can be used instead of the leaf spring 360.

[0280] The piezoelectric element 358 generates power in the combined direction of the X-axis and Y-axis. The piezoelectric element 358 is oriented to generate power in the combined direction of the -X-axis and +Y-axis. The presence or absence of power supply to the piezoelectric element 358 is switched by a piezoelectric element driver (not shown). If power is supplied to the piezoelectric element 358, the piezoelectric element 358 operates; if the power supply to the piezoelectric element 358 is stopped, the piezoelectric element 358 stops. When the piezoelectric element 358 operates, it imparts power to the holding member 352 and the jitter correction lens 76 in the combined direction of the -X-axis and +Y-axis, causing the holding member 352 and the jitter correction lens 76 to rotate about the shaft member 365 in the combined direction of the -X-axis and +Y-axis. At this time, the holding member 352 and the jitter correction lens 76 rotate against the elastic force of the leaf spring 360. Thus, by being powered by the piezoelectric element 358, the jitter correction lens 76 moves, thereby displacing the image in the -X-axis and +Y-axis directions. If the piezoelectric element 358 stops operating, the elastic force of the leaf spring 360 in the combined direction of the +X-axis and -Y-axis directions acts on the holding member 352 and the jitter correction lens 76, causing the holding member 352 and the jitter correction lens 76 to rotate about the shaft member 365 in the combined direction of the +X-axis and -Y-axis directions and return to their original positions.

[0281] In the third embodiment, the surveillance camera 10 replaces the jitter correction / displacement drive mechanism 150 described above (see reference). Figure 7 and Figure 8 Except for the jitter correction / displacement drive mechanism 350, the structure is the same as in the first embodiment, and it operates in the same way as in the first embodiment. However, in the third embodiment, the control of the presence or absence of image displacement is repeatedly performed by using a frame period of 2 cycles as a group. Other operations of the surveillance camera 10 will be omitted from the description of the first embodiment described above, with reference to the description above.

[0282] Next, the effects of the third embodiment will be explained.

[0283] The jitter correction / displacement drive mechanism 350 includes a jitter correction drive mechanism 374 that moves the jitter correction lens 76 in the direction of correcting image jitter and a displacement drive mechanism 388 that moves the jitter correction lens 76 in the direction of image displacement. Therefore, for example, compared to the case where the jitter correction drive mechanism 374 moves the jitter correction lens 76 to correct image jitter and then moves the image, image jitter correction and image displacement can be performed with good accuracy.

[0284] Furthermore, when the displacement drive mechanism 388 moves the jitter correction lens 76 in the direction that the jitter correction drive mechanism 374 moves the jitter correction lens 76, the jitter correction lens 76 moves by an amount equal to the sum of the movement amount of the jitter correction lens 76 based on the jitter correction drive mechanism 374 and the movement amount of the jitter correction lens 76 based on the displacement drive mechanism 388. Therefore, the image can be shifted to the position specified by the image shift command. Furthermore, when the displacement drive mechanism 388 moves the jitter correction lens 76 in the opposite direction to the movement direction of the jitter correction drive mechanism 374, the jitter correction lens 76 moves by an amount equal to the difference between the movement amount of the jitter correction lens 76 based on the jitter correction drive mechanism 374 and the movement amount of the jitter correction lens 76 based on the displacement drive mechanism 388. Therefore, the image can be shifted to the position specified by the image shift command.

[0285] Furthermore, the jitter correction / displacement drive mechanism 350 includes a holding member 352 for holding the jitter correction lens 76, a first support member 354 supporting the holding member 352 so that it can move along the XY coordinate plane, and a second support member 356 supporting the first support member 354 so that it can move along the XY coordinate plane. A jitter correction drive mechanism 374 is disposed between the first support member 354 and the second support member 356, and a displacement drive mechanism 388 is disposed between the holding member 352 and the first support member 354. Therefore, the movement of the jitter correction lens 76 for correcting image jitter and the movement of the jitter correction lens 76 for image displacement can be performed independently.

[0286] Furthermore, the retaining member 352 is supported on the first supporting member 354 in a manner that allows it to rotate around the shaft member 365 extending along the optical axis OA. Thus, the image can be displaced along the XY coordinate plane orthogonal to the optical axis OA with a simple structure.

[0287] Furthermore, the jitter correction drive mechanism 374 has a voice coil motor, and the displacement drive mechanism 388 has a piezoelectric element. Therefore, the movement of the jitter correction lens 76 for correcting image jitter and the movement of the jitter correction lens 76 for image displacement can be performed with a simple structure.

[0288] Furthermore, the displacement drive mechanism 388 has a leaf spring 360 positioned opposite the piezoelectric element 358. Therefore, when the piezoelectric element 358 is stopped, the jitter correction lens 76 can be returned to its original position before moving along the X-axis by the elastic force of the leaf spring 360.

[0289] Furthermore, the jitter correction drive mechanism 374 has an X-axis VCM 120 and a Y-axis VCM 122. The X-axis VCM 120 is disposed between the first support member 354 and the second support member 356, generating power in the X-axis direction. The Y-axis VCM 122 is disposed between the first support member 354 and the second support member 356, generating power in the Y-axis direction. Therefore, the jitter correction lens 76 can be moved independently along the X-axis and Y-axis directions via the X-axis VCM 120 and the Y-axis VCM 122.

[0290] Furthermore, the displacement drive mechanism 388 includes a piezoelectric element 358. The piezoelectric element 358 is disposed between the holding member 352 and the first support member 354, generating power in the combined direction of the X-axis and Y-axis directions. Therefore, the jitter correction lens 76 can be moved along the combined direction of the X-axis and Y-axis directions via the piezoelectric element 358.

[0291] In the third embodiment, the same structure as in the first embodiment yields the same function and effect as in the first embodiment.

[0292] Next, variations common to the above embodiments (i.e., the first, second, and third embodiments) will be described.

[0293] In the above embodiment, the lens device 70 is disposed on the monitoring camera body 20 by mounting the lens device 70 on the monitoring camera body 20 having the image sensor 24. However, as an example, such as Figure 30 As shown, the lens device 70 can also be mounted on the main body 20 of the surveillance camera having the image sensor 24.

[0294] Furthermore, in the above embodiment, the lens device 70 includes a controller 90 that is different from the controller 40 of the surveillance camera body 20, but the lens device 70 may also not include a controller 90. Moreover, the function of the controller 90 of the lens device 70 can be integrated into the controller 40 of the surveillance camera body 20, and the controller 40 of the surveillance camera body 20 can control the lens device 70. In this case, the controller 90 is an example of a "computer applicable to the camera device".

[0295] Furthermore, while the above embodiments have described an example of image processing being performed by the controller 40 of the surveillance camera 10, the technology of the present invention is not limited thereto. For example, image processing may also be performed by a computer of an external device communicatively connected to the surveillance camera 10 via a network such as a LAN or WAN. Moreover, image processing may be performed separately by the aforementioned external device and the surveillance camera 10, or it may be performed separately by multiple devices including the aforementioned external device and the surveillance camera 10.

[0296] Furthermore, while the above embodiments have used a surveillance camera 10 as an example of an imaging device, the technology of the present invention is not limited thereto, and the technology shown in the above embodiments can be applied to various imaging devices. Examples of imaging devices mentioned herein include interchangeable-lens digital cameras that do not use a mirror, lens-fixed digital cameras, digital cameras that use a mirror, and digital cameras built into various electronic devices such as smart devices, wearable terminals, cell observation devices, ophthalmic observation devices, or surgical microscopes. Moreover, the technology shown in the above embodiments can also be applied to imaging devices equipped with image sensors that are sensitive to light having wavelength bands other than near-infrared light.

[0297] Furthermore, while the above embodiment exemplifies storing the jitter correction / displacement processing program 100 in the NVM94, the jitter correction / displacement processing program 100 can also be stored in a portable storage medium such as an SSD or USB memory. The jitter correction / displacement processing program 100 only needs to be stored in a non-temporary storage medium. The jitter correction / displacement processing program 100 stored in a non-temporary storage medium can be used, for example, by mounting it in a lens device 70.

[0298] Furthermore, in the above embodiments, an example of a controller 40 being built into the surveillance camera 10 is shown, but the technology of the present invention is not limited to this. For example, the controller 40 may also be located outside the surveillance camera 10.

[0299] Furthermore, in the above embodiment, the CPU 42 of the surveillance camera body 20 is a single CPU, but it can also be multiple CPUs. A GPU can also be used instead of the CPU 42. Similarly, the CPU 92 of the lens device 70 is a single CPU, but it can also be multiple CPUs. A GPU can also be used instead of the CPU 92.

[0300] Furthermore, in the above embodiment, the monitoring camera body 20 includes a controller 40, but the technology of the present invention is not limited to this, and devices including ASICs, FPGAs and / or PLDs can also be used to replace the controller 40. Moreover, a combination of hardware and software structures can also be used to replace the controller 40.

[0301] Furthermore, in the above embodiment, the lens device 70 includes a controller 90, but the technology of the present invention is not limited to this, and devices including ASICs, FPGAs and / or PLDs can also be used instead of the controller 90. Moreover, a combination of hardware and software structures can also be used instead of the controller 90.

[0302] As the hardware resource for performing jitter correction / displacement processing as described in the above embodiments, various processors can be used, as shown below. For example, a general-purpose processor, i.e., a CPU, can function as the hardware resource for performing jitter correction / displacement processing by executing software, i.e., a program. Furthermore, as a processor, a dedicated circuit, i.e., an FPGA, PLD, or ASIC, can be used, which has a circuit structure specifically designed for performing a particular process. All processors have built-in or connected memory, and all processors use memory to perform jitter correction / displacement processing.

[0303] The hardware resources for performing jitter correction / shifting processing can consist of one of these various processors, or a combination of two or more processors of the same or different types (e.g., a combination of multiple FPGAs or a combination of a CPU and an FPGA). Furthermore, the hardware resources for performing jitter correction / shifting processing can also be a single processor.

[0304] As examples of processors, firstly, there are processors composed of a combination of one or more CPUs and software, which function as hardware resources for performing jitter correction / shifting processing. Secondly, there are processors, such as SoCs, that use a single IC chip to implement the overall system functionality, including multiple hardware resources for performing jitter correction / shifting processing. In this way, jitter correction / shifting processing is implemented using one or more of the aforementioned processors as hardware resources.

[0305] Furthermore, the hardware architecture of these various processors, more specifically, can utilize circuits composed of semiconductor components and other circuit elements. Moreover, the aforementioned jitter correction / displacement processing is merely one example. Therefore, without departing from the core principles, unnecessary steps can certainly be removed, new steps added, or the processing order rearranged.

[0306] The descriptions and illustrations above constitute a detailed explanation of a portion of the technology involved in this invention, and are merely one example of the technology of this invention. For example, the descriptions related to the structure, function, effect, and effect described above are examples of the structure, function, effect, and effect of the portion of the technology involved in this invention. Therefore, without departing from the technical spirit of this invention, unnecessary parts of the descriptions and illustrations above may be deleted, or new elements may be added or replaced. Furthermore, to avoid complications and to facilitate understanding of the portion of the technology involved in this invention, descriptions related to common technical knowledge that are not particularly necessary to explain in terms of enabling the implementation of this invention have been omitted from the descriptions and illustrations above.

[0307] In this specification, "A and / or B" has the same meaning as "at least one of A and B". That is, "A and / or B" can mean only A, only B, or a combination of A and B. Furthermore, in this specification, the same approach applies to situations where three or more cases are connected by "and / or".

[0308] All documents, patent applications and technical standards described in this specification, and the specific and separately described documents, patent applications and technical standards incorporated herein by reference, are incorporated herein by reference to the same extent.

Claims

1. A lens device disposed on the main body of a camera device having an image sensor, the lens device comprising: A lens comprising a jitter correction lens for correcting jitter in an image obtained by imaging light on the image sensor, and for imaging incident light on the image sensor. The first drive mechanism applies power to the jitter correction lens along a coordinate plane that intersects the optical axis of the lens, thereby moving the jitter correction lens in the direction of correcting the jitter of the image. The second drive mechanism moves the jitter correction lens in the direction of the image displacement by applying power to the jitter correction lens along the coordinate surface. The second drive mechanism is a different type of drive mechanism from the first drive mechanism. Processor; and Memory, connected to or built into the processor, The processor performs the following processing: The first driving mechanism is controlled to move the jitter correction lens in the direction of correcting the jitter of the image; The second drive mechanism is controlled to move the jitter correction lens in the direction of the image displacement. The second driving mechanism moves the jitter correction lens in the direction that the first driving mechanism moves the jitter correction lens. When the second driving mechanism moves the jitter correction lens in the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the sum of the movement amount of the jitter correction lens based on the first driving mechanism and the movement amount of the jitter correction lens based on the second driving mechanism. When the second drive mechanism moves the jitter correction lens in a direction opposite to the direction in which the first drive mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the amount of movement of the jitter correction lens based on the first drive mechanism minus the amount of movement of the jitter correction lens based on the second drive mechanism.

2. The lens device according to claim 1, wherein, The control of the first drive mechanism is based on feedback control of the jitter of the camera device, which includes the lens device and the main body of the camera device. The control of the second drive mechanism is a sequence control based on a pre-defined displacement order.

3. The lens device according to claim 1, wherein, The processor controls the second drive mechanism to move the jitter correction lens in the direction of the image displacement based on the frame-by-frame imaging from the image sensor.

4. The lens device according to claim 1, wherein, The processor controls the second driving mechanism to move the jitter correction lens toward the image at a position that is greater than or less than the pixel pitch of the image sensor.

5. The lens device according to claim 1, wherein, The coordinate plane is defined by a first direction and a second direction intersecting the first direction. The second drive mechanism has a third actuator and a fourth actuator. The third actuator moves the jitter correction lens by applying power to it along the first direction. The fourth actuator moves the jitter correction lens by applying power to it along the second direction. The processor selectively controls the second drive mechanism to switch between the presence or absence of power in the third actuator and the presence or absence of power in the fourth actuator.

6. The lens device according to claim 1, wherein, The coordinate plane is defined by a first direction and a second direction intersecting the first direction. The second drive mechanism has a third actuator and a fourth actuator. The third actuator moves the jitter correction lens by applying power to it along the first direction. The fourth actuator moves the jitter correction lens by applying power to the jitter correction lens along the second direction.

7. The lens device according to claim 1, comprising: The retaining component holds the jitter correction lens; The first support member supports the retaining member so that it can move along the coordinate plane; and The second support component supports the first support component so that it can move along the coordinate plane. The first drive mechanism is disposed between the retaining member and the first support member. The second drive mechanism is disposed between the first support component and the second support component.

8. The lens device according to claim 1, comprising: The retaining component holds the jitter correction lens; The first support member supports the retaining member so that it can move along the coordinate plane; and The second support component supports the first support component so that it can move along the coordinate plane. The first drive mechanism is disposed between the first support member and the second support member. The second drive mechanism is disposed between the retaining member and the first support member.

9. The lens device according to claim 8, wherein, The retaining member is supported on the first supporting member in such a way that it can rotate about a shaft member extending along the optical axis.

10. The lens device according to claim 1, wherein, The first drive mechanism has a voice coil motor. The second drive mechanism has a piezoelectric element.

11. The lens device according to claim 10, wherein, The second drive mechanism has an elastic member disposed at a position opposite to the piezoelectric element.

12. The lens device according to claim 7, wherein, The coordinate plane is defined by a first direction and a second direction intersecting the first direction. The first driving mechanism has: A first actuator, disposed between the retaining member and the first supporting member, generates power in the first direction; and A second actuator, disposed between the retaining member and the first supporting member, generates power in the second direction. The second drive mechanism has: A third actuator, disposed between the first support member and the second support member, generates power in the first direction; and The fourth actuator is disposed between the first support member and the second support member, and generates power in the second direction.

13. The lens device according to claim 8, wherein, The coordinate plane is defined by a first direction and a second direction intersecting the first direction. The first driving mechanism has: A first actuator, disposed between the first support member and the second support member, generates power in the first direction; and The second actuator, disposed between the first support member and the second support member, generates power in the second direction. The second drive mechanism has: A third actuator, disposed between the retaining member and the first supporting member, generates power in the first direction; and The fourth actuator is disposed between the retaining member and the first supporting member, and generates power in the second direction.

14. The lens device according to claim 8, wherein, The coordinate plane is defined by a first direction and a second direction intersecting the first direction. The first driving mechanism has: A first actuator, disposed between the first support member and the second support member, generates power in the first direction; and The second actuator, disposed between the first support member and the second support member, generates power in the second direction. The second drive mechanism has a third actuator disposed between the retaining member and the first support member, which generates power in the combined direction of the first direction and the second direction.

15. The lens device according to claim 1, comprising a filter disposed on the subject side closer to the image sensor, and allowing near-infrared light contained in the light to be transmitted.

16. A camera device comprising: processor; Memory, either connected to or built into the processor; Image sensor; A lens comprising a jitter correction lens for correcting jitter in an image formed by light on the image sensor, and for forming an image on the image sensor by incident light. The first drive mechanism applies power to the jitter correction lens along a coordinate plane intersecting the optical axis of the lens, thereby moving the jitter correction lens in the direction of correcting image jitter; and The second drive mechanism moves the shake correction lens in the direction of the image displacement by applying power to the shake correction lens along the coordinate plane. The second drive mechanism is a different type of drive mechanism from the first drive mechanism. The processor performs the following processing: The first driving mechanism is controlled to move the jitter correction lens in the direction of correcting the jitter of the image; The second drive mechanism is controlled to move the jitter correction lens in the direction of the image displacement. The second driving mechanism moves the jitter correction lens in the direction that the first driving mechanism moves the jitter correction lens. When the second driving mechanism moves the jitter correction lens in the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the sum of the movement amount of the jitter correction lens based on the first driving mechanism and the movement amount of the jitter correction lens based on the second driving mechanism. When the second drive mechanism moves the jitter correction lens in a direction opposite to the direction in which the first drive mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the amount of movement of the jitter correction lens based on the first drive mechanism minus the amount of movement of the jitter correction lens based on the second drive mechanism.

17. The camera device according to claim 16, wherein, The processor performs the following processing: The second drive mechanism is controlled to move the jitter correction lens toward the image at a position that is greater than or less than the pixel pitch of the image sensor. The image sensor takes a picture based on the displacement of the image; The images obtained from the shooting are synthesized from multiple frames.

18. A method for operating a lens device, the lens device comprising: A lens comprising a jitter correction lens for correcting jitter in an image obtained by imaging light on an image sensor, and for imaging the incident light on the image sensor. The first drive mechanism applies power to the jitter correction lens along a coordinate plane intersecting the optical axis of the lens, thereby moving the jitter correction lens in the direction of correcting image jitter; and The second drive mechanism moves the shake correction lens in the direction of the image displacement by applying power to the shake correction lens along the coordinate plane. The second drive mechanism is a different type of drive mechanism from the first drive mechanism. The second driving mechanism moves the jitter correction lens in the direction that the first driving mechanism moves the jitter correction lens. When the second driving mechanism moves the jitter correction lens in the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the sum of the movement amount of the jitter correction lens based on the first driving mechanism and the movement amount of the jitter correction lens based on the second driving mechanism. When the second driving mechanism moves the jitter correction lens in a direction opposite to the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the difference between the amount of movement of the jitter correction lens based on the first driving mechanism and the amount of movement of the jitter correction lens based on the second driving mechanism. The action method includes the following steps: The first driving mechanism is controlled to move the jitter correction lens in the direction of correcting the jitter of the image; and The second drive mechanism is controlled to move the jitter correction lens in the direction of the image displacement.

19. A method for operating a camera device, the camera device comprising: Image sensor; A lens comprising a jitter correction lens for correcting jitter in an image obtained by imaging light on the image sensor, and for imaging incident light on the image sensor. The first drive mechanism applies power to the jitter correction lens along a coordinate plane intersecting the optical axis of the lens, thereby moving the jitter correction lens in the direction of correcting image jitter; and The second drive mechanism moves the shake correction lens in the direction of the image displacement by applying power to the shake correction lens along the coordinate plane. The second drive mechanism is a different type of drive mechanism from the first drive mechanism. The second driving mechanism moves the jitter correction lens in the direction that the first driving mechanism moves the jitter correction lens. When the second driving mechanism moves the jitter correction lens in the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the sum of the movement amount of the jitter correction lens based on the first driving mechanism and the movement amount of the jitter correction lens based on the second driving mechanism. When the second driving mechanism moves the jitter correction lens in a direction opposite to the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the difference between the amount of movement of the jitter correction lens based on the first driving mechanism and the amount of movement of the jitter correction lens based on the second driving mechanism. The operation method of the camera device includes the following steps: The first driving mechanism is controlled to move the jitter correction lens in the direction of correcting the jitter of the image; and The second drive mechanism is controlled to move the jitter correction lens in the direction of the image displacement.

20. A non-transitory storage medium storing a program for causing a computer applicable to a lens device to perform processing, the lens device comprising: A lens comprising a jitter correction lens for correcting jitter in an image obtained by imaging light on an image sensor, and for imaging the incident light on the image sensor. The first drive mechanism applies power to the jitter correction lens along a coordinate plane intersecting the optical axis of the lens, thereby moving the jitter correction lens in the direction of correcting image jitter; and The second drive mechanism moves the shake correction lens in the direction of the image displacement by applying power to the shake correction lens along the coordinate plane. The second drive mechanism is a different type of drive mechanism from the first drive mechanism. The second driving mechanism moves the jitter correction lens in the direction that the first driving mechanism moves the jitter correction lens. When the second driving mechanism moves the jitter correction lens in the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the sum of the movement amount of the jitter correction lens based on the first driving mechanism and the movement amount of the jitter correction lens based on the second driving mechanism. When the second driving mechanism moves the jitter correction lens in a direction opposite to the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the difference between the amount of movement of the jitter correction lens based on the first driving mechanism and the amount of movement of the jitter correction lens based on the second driving mechanism. The process includes the following steps: The first driving mechanism is controlled to move the jitter correction lens in the direction of correcting the jitter of the image; and The second drive mechanism is controlled to move the jitter correction lens in the direction of the image displacement.

21. A non-transitory storage medium storing a program for causing a computer applicable to a camera device to perform processing, the camera device comprising: Image sensor; A lens comprising a jitter correction lens for correcting jitter in an image obtained by imaging light on the image sensor, and for imaging incident light on the image sensor. The first drive mechanism applies power to the jitter correction lens along a coordinate plane intersecting the optical axis of the lens, thereby moving the jitter correction lens in the direction of correcting image jitter; and The second drive mechanism moves the shake correction lens in the direction of the image displacement by applying power to the shake correction lens along the coordinate plane. The second drive mechanism is a different type of drive mechanism from the first drive mechanism. The second driving mechanism moves the jitter correction lens in the direction that the first driving mechanism moves the jitter correction lens. When the second driving mechanism moves the jitter correction lens in the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the sum of the movement amount of the jitter correction lens based on the first driving mechanism and the movement amount of the jitter correction lens based on the second driving mechanism. When the second driving mechanism moves the jitter correction lens in a direction opposite to the direction in which the first driving mechanism moves the jitter correction lens, the jitter correction lens moves by an amount equal to the difference between the amount of movement of the jitter correction lens based on the first driving mechanism and the amount of movement of the jitter correction lens based on the second driving mechanism. The process includes the following steps: The first driving mechanism is controlled to move the jitter correction lens in the direction of correcting the jitter of the image; and The second drive mechanism is controlled to move the jitter correction lens in the direction of the image displacement.

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