JP2015207859A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus which can suppress deterioration of an image with an unstable element of a drive mechanism while deterioration of the image with a temperature change is suppressed even if a posture change of a self-machine occurs.SOLUTION: An imaging apparatus Ia of the present invention uses previously given temperature correction data for correcting respective optical images of a subject, which are imaged on respective imaging faces by a plurality of imaging optical systems in an array lens, to become respective optical images of the subject, which are imaged on the imaging faces by the plurality of imaging optical systems at a reference temperature which is set to be reference, in response to the temperature of the array lens, which is detected by a temperature detection section 6, to correct the respective optical images of the subject, which are imaged on the respective imaging faces by the plurality of imaging optical systems, and to form the respective images of the respective optical images. A posture of the array lens is obtained by a posture operation section 84a and temperature correction data used when the image is formed is corrected by a correction data correction section 83 in response to the posture of the array lens.

Description

  The present invention relates to an imaging apparatus that captures an optical image of an object (subject).

  In general, an imaging apparatus converts an optical image formed on a light receiving surface (imaging surface) into an electrical signal by an imaging optical system that forms an optical image of an object (subject) and the imaging optical system. And an image sensor. As one of such imaging apparatuses, an apparatus using an array lens including a plurality of imaging optical systems (single eyes) arranged in an array is known. Since the imaging device is used in various environments, the array lens mounted on the imaging device is affected by the various environments.

  In particular, when the temperature changes, the distance between each eye in the array lens changes, the optical characteristics of each eye change, and aberrations occur. For this reason, the image formed with the imaging device using an array lens will deteriorate with a temperature change. For this reason, as a countermeasure against such a temperature change, for example, there is an imaging apparatus disclosed in Patent Document 1.

  The imaging apparatus disclosed in Patent Document 1 is provided with a lens array including a plurality of lenses and a one-to-one correspondence with the plurality of lenses, and receives light substantially perpendicular to the optical axis direction of the corresponding lenses. A plurality of imaging regions each having a surface; a temperature sensor disposed in the vicinity of the lens array for detecting temperature; and a movement amount of all optical axes of the plurality of lenses based on the temperature detected by the temperature sensor And a temperature compensation / imaging signal correction unit that corrects the imaging signal generated in the imaging region according to the above.

Japanese Patent No. 4264464

  Incidentally, some imaging apparatuses include an autofocus function for automatically focusing, a zooming function (zoom function) for changing the focal length, and the like. This autofocus function is executed by moving an optical element for focusing (focusing) along the optical axis direction, and the zooming function moves the optical element for zooming in the optical axis direction. It is executed by moving along. Therefore, an imaging apparatus having such a function includes a drive mechanism that drives a predetermined optical element, and this drive mechanism generally includes unstable elements such as “backlash” and “play”. In addition, when a resin material part made of a resin material such as plastic is used, its elastic deformation also becomes the unstable element. When an imaging device having such an unstable element changes from the standard posture (reference posture) set as a standard use state at the time of design, the direction of gravity acting on the drive mechanism is also in the standard state. The optical element is inclined with respect to the optical axis (tilt is generated) due to the change in the attitude of the aircraft and the unstable element. It may deviate from its original position. As a result, even if the deterioration due to the temperature change is corrected, the image formed by the imaging device is deteriorated.

  In particular, in the case of a lens unit including an array lens 1002 in which a plurality of imaging optical systems (single eyes) are arranged in a two-dimensional array, as shown in FIG. 11B, the light receiving surface of the imaging device from the array lens 1002 The distance to 1003 (the solid line indicates the light receiving surface when the tilt is 0, and the broken line indicates the light receiving surface when the tilt is present) varies depending on the individual eye according to the arrangement position of the individual eyes due to the tilt. Even if the tilt is so small that it can be ignored by a monocular lens, it cannot be ignored depending on the individual eye, and the deterioration of the optical image becomes large. In other words, in the monocular optical element 1001 shown in FIG. 11A, the optical performance degradation occurs only in the periphery of the image, but in the array lens 1002 shown in FIG. The optical performance of a single eye is almost completely reduced, and the entire image is deteriorated.

  In addition, since each individual lens in the array lens is generally small, even a small amount of positional deviation that can be ignored with a monocular lens cannot be ignored.

  The image pickup apparatus disclosed in Patent Document 1 can correct image degradation due to temperature changes, but cannot take correction because it does not take into account such posture changes and image degradation due to unstable elements.

  The present invention has been made in view of the above-described circumstances, and its purpose is to provide an unstable element of a drive mechanism while suppressing deterioration of an image due to a temperature change even if the attitude change of the aircraft occurs. It is an object of the present invention to provide an imaging device that can suppress accompanying image degradation.

  As a result of various studies, the present inventor has found that the above object is achieved by the present invention described below. That is, an imaging apparatus according to an aspect of the present invention corresponds to an array lens having a plurality of imaging optical systems and the plurality of imaging optical systems in the array lens, and each imaging surface is provided by each of the plurality of imaging optical systems. A plurality of image pickup units for picking up each optical image of the imaged subject; a drive mechanism unit for supporting the array lens and moving the array lens along an axial direction of a predetermined axis; and the array lens A temperature detection unit for detecting the temperature of the object, and each optical image of the subject imaged on each imaging surface by each of the plurality of imaging optical systems in the array lens at a reference temperature set as a reference, the array lens A predetermined temperature for correcting each of the plurality of image pickup optical systems in the image pickup surface to be an optical image of the subject. By using positive data based on the temperature of the array lens detected by the temperature detector, each optical image of the subject imaged on each imaging surface by each of the plurality of imaging optical systems in the array lens is obtained. Based on the orientation of the array lens detected by the orientation detection unit, an orientation detection unit for detecting the orientation of the array lens, an image forming unit that corrects and forms each image of each optical image of the subject And a correction data correction unit for correcting the temperature correction data used by the image forming unit.

  In such an imaging apparatus, each of the plurality of imaging optical systems in the array lens is obtained by using each optical image of the subject imaged on each imaging surface by each of the plurality of imaging optical systems in the array lens at a reference temperature set as a reference. Temperature correction data for correcting each object to be imaged on each imaging surface is prepared in advance, and when the image is formed, the temperature correction data is detected by the temperature detection unit. By using based on the temperature of the array lens, each optical image of the subject imaged on each imaging surface by each of the plurality of imaging optical systems in the array lens is corrected. For this reason, the said imaging device can suppress degradation of the image accompanying a temperature change.

  Here, if the attitude of the array lens changes with the attitude change of the own apparatus, as described above, the image formed by the imaging apparatus deteriorates even if the deterioration due to the temperature change is corrected. However, when the image correction apparatus uses the temperature correction data, the temperature correction data is corrected based on the attitude of the array lens detected by the attitude detection unit.

  Therefore, the image pickup apparatus can also suppress image deterioration due to unstable elements of the drive mechanism section while suppressing image deterioration due to temperature change even if the attitude change of the own device occurs.

  According to another aspect, in the above-described imaging device, the correction data correction unit is used by the image forming unit with the temperature correction data used by the image forming unit in a reference posture set as a reference. The temperature correction data used by the image forming unit is used based on the posture detected by the posture detection unit. The correction data includes distortion correction data for correcting a shape distortion generated in the optical image due to a posture change from the reference posture.

  In such an imaging apparatus, since distortion correction data is prepared in advance, it is only necessary to select correction data according to the posture detected by the posture detection unit, and an operation for correcting the temperature correction data becomes unnecessary. Temperature correction data can be easily corrected.

  According to another aspect, in the above-described imaging device, the correction data correction unit changes the application degree using the distortion correction data based on the posture detected by the posture detection unit, The temperature correction data used by the image forming unit is corrected.

  In such an imaging apparatus, the degree of application may be changed in accordance with the posture detected by the posture detector, and the temperature correction data can be easily corrected.

  According to another aspect, in the above-described imaging devices, the correction data is previously given to at least two imaging optical systems of the plurality of imaging optical systems.

  Since such an imaging apparatus may be correction data for at least two imaging optical systems, the correction data can be stored with a small storage capacity. The correction data for the imaging optical system to which correction data is not given in advance is interpolated from the correction data given in advance.

  According to another aspect, in the above-described imaging devices, the drive mechanism unit supports the array lens in a cantilever manner so as to guide the array lens along the axial direction of the predetermined axis. And a drive unit for moving the array lens along the axial direction of the predetermined axis.

  Since such an imaging apparatus supports the array lens in a cantilever manner, the tilt is likely to occur and the positional deviation is likely to occur due to posture change and unstable elements. Therefore, such an imaging apparatus can effectively suppress image deterioration.

  According to another aspect, in the above-described imaging devices, the temperature correction data is obtained from distortion correction data for correcting distortion of a shape generated in an optical image due to a temperature change from the reference temperature, and the reference temperature. It includes at least one of positional deviation correction data for correcting the positional deviation of each imaging optical system that occurs in a plane orthogonal to the predetermined axis due to the temperature change.

  Such an image pickup apparatus can correct image distortion caused by a temperature change from the reference temperature and suppress deterioration of the image. In addition, such an imaging apparatus can suppress image degradation by correcting a positional shift of each imaging optical system that occurs in a plane orthogonal to the predetermined axis due to a temperature change from the reference temperature.

  According to another aspect, in the above-described imaging devices, the posture detection unit detects the direction of gravity acting on the array lens, and the gravity direction detection unit detects the gravity direction detection unit. And an attitude calculation unit that determines the attitude of the array lens based on the direction of gravity.

  Such an imaging apparatus can determine the orientation of the array lens by detecting the direction of gravity, and can correct temperature correction data more accurately.

  According to another aspect, in the above-described imaging devices, the posture detection unit is configured to detect the angular velocity of the array lens based on the angular velocity detection unit and the angular velocity detected by the angular velocity detection unit. A posture calculating unit that obtains the tilt of the array lens as the posture of the array lens.

  Such an imaging apparatus can determine the tilt of the array lens by detecting the angular velocity, and can correct the temperature correction data.

  Further, in another aspect, in the above-described imaging devices, the posture detection unit includes each of the subjects imaged on each imaging surface by at least two or more imaging optical systems of the plurality of imaging optical systems. The tilt of the array lens is detected as the attitude of the array lens based on each image of the optical image.

  Such an imaging apparatus detects the tilt of the array lens based on the image of the optical image of the subject, and therefore does not require a separate sensor.

  The image pickup apparatus according to the present invention can suppress image deterioration due to unstable elements of the drive mechanism while suppressing image deterioration due to temperature change even if the attitude change of the own device occurs.

It is a figure which shows the structural structure of the imaging device in 1st Embodiment. It is a block diagram which shows the electrical structure of the said imaging device. It is a figure for demonstrating the temperature correction data in case the outline shape of an optical image changes resulting from a temperature change. It is a figure for demonstrating the temperature correction data in case the position shift of an optical image arises due to a temperature change. It is a figure for demonstrating the correction data in case the outline shape of an optical image changes resulting from an attitude | position change. It is a figure for demonstrating the correction data in case the position shift of an optical image arises due to an attitude | position change. It is a figure which shows the structural structure of the imaging device in 2nd Embodiment. It is a figure which shows the structural structure of the imaging device in 3rd Embodiment. It is a figure for demonstrating the attitude | position detection part of a 3rd aspect. It is a figure for demonstrating the attitude | position detection part of a 4th aspect. It is a figure for comparing and explaining the influence of the tilt in the case of a single eye and the influence of the tilt in the case of a compound eye.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. In addition, the structure which attached | subjected the same code | symbol in each figure shows that it is the same structure, The description is abbreviate | omitted suitably. Further, in this specification, when referring generically, it is indicated by a reference symbol without a suffix, and when referring to an individual configuration, it is indicated by a reference symbol with a suffix.

  The imaging apparatus I according to the present embodiment includes an array lens having a plurality of imaging optical systems, and each object (subject) imaged on each imaging surface (each light receiving surface) by each of the plurality of imaging optical systems. It is an apparatus that captures optical images and generates electrical image signals (or image data) corresponding to the optical images. The imaging apparatus I may generate a still image signal (or image data) and / or a moving image signal (or image data). A and / or B means at least one of A and B. Then, when forming the image of the subject, the imaging apparatus I according to the present embodiment forms each optical image of the subject imaged on each imaging surface by each of the plurality of imaging optical systems in the array lens with temperature correction data. Is corrected. Furthermore, the imaging apparatus I according to the present embodiment corrects the temperature correction data based on the attitude change of the own apparatus and the attitude of the array lens caused by an unstable element when the correction is performed using the temperature correction data. To do. Therefore, the imaging apparatus I according to the present embodiment can suppress image degradation due to unstable elements of the drive mechanism while suppressing image degradation due to a temperature change even if the posture of the device itself changes. . Hereinafter, each aspect of the imaging apparatus I will be described in order.

(First embodiment)
FIG. 1 is a diagram illustrating a structural configuration of the imaging apparatus according to the first embodiment. FIG. 1A is a plan view, and FIG. 1B is a side view in a reference posture that is the posture of the array lens in a state where the imaging device Ia is placed with the optical axis and the direction of gravity aligned. FIG. 1C is a side view in the case where gravity is applied from the cantilever side of the support mechanism in the direction orthogonal to the optical axis. FIG. 1B is a side view when viewed from the Y direction in the illustrated XYZ orthogonal coordinate system. In the XYZ orthogonal coordinate system, for example, the X direction and the Y direction are set along the arrangement direction of each eye in the array lens 11 described later, and the Z direction is set in a direction orthogonal to the X direction and the Y direction. Hereinafter, the configuration of the imaging apparatus I will be described using the X direction, the Y direction, and the Z direction as appropriate. The + X direction is a direction from the other end along the X direction in the array lens 11 toward one end, and the −X direction is a direction from the one end along the X direction in the array lens 11 toward the other end. , + Y direction is a direction from the other end along the Y direction in the array lens 11 toward one end, and -Y direction is a direction from the one end along the Y direction in the array lens 11 toward the other end, The + Z direction is a direction in which the array lens 11 is separated from the imaging unit 5, and the −Z direction is a direction in which the array lens 11 approaches the imaging unit 5. FIG. 2 is a block diagram illustrating an electrical configuration of the imaging apparatus. FIG. 3 is a diagram for explaining temperature correction data when the contour shape of the optical image changes due to a temperature change. FIG. 3A is a front view of the array lens 11, and FIG. 3B is a diagram for explaining a change in the distance between the tilted array lens 11 and the imaging surface of the imaging unit 5. FIG. 3C is a diagram for explaining temperature correction data. FIG. 4 is a diagram for explaining temperature correction data in a case where the optical image is displaced due to a temperature change. 4A is a diagram for explaining the positional deviation of the array lens 11 with respect to the imaging surface of the imaging unit 5, and FIG. 4B is a diagram for explaining the temperature correction data. FIG. 5 is a diagram for explaining correction data when the contour shape of an optical image changes due to a change in posture. FIG. 6 is a diagram for explaining correction data in the case where the optical image is displaced due to the posture change.

  As shown in FIGS. 1 and 2, for example, the imaging apparatus Ia according to the first embodiment includes an optical component 1a including an array lens 11, a support mechanism 2a, a support member 3a, a drive unit 4a, and a plurality of imaging units. Unit 5, temperature detection unit 6, gravity direction detection unit 7 a, control processing unit 8 a including image forming unit 82 and posture calculation unit 84 a, and storage unit 9. The support mechanism 2a and the drive unit 4a constitute a drive mechanism unit and are an example of the drive mechanism unit. The gravitational direction detection unit 7a and the attitude calculation unit 84a constitute an attitude detection unit and are an example of an attitude detection unit. The optical component 1 a, the support mechanism 2 a, the support member 3 a, and the drive unit 4 a constitute a lens unit that forms an optical image of an object on the light receiving surface of the imaging unit 5.

  The support mechanism 2a is a member for supporting the optical component 1a. In this embodiment, for example, the support member 2a is a parallel spring member 2a that elastically supports the optical component 1a in a cantilever manner so as to guide the optical component 1a along the axial direction of a predetermined axis. The predetermined axis is, for example, the optical axis of the lens unit or the optical axis of the imaging unit 5. The parallel spring member 2a includes a pair of (two) spring members that are long in one direction (X direction in the example shown in FIG. 1), and the pair of spring members is in the long direction (extension direction). ) And are arranged so as to be separated from each other in a direction orthogonal to the long direction so as to be parallel to each other. Such a parallel spring member 2a is composed of a pair of leaf springs, for example. Further, for example, the parallel spring member 2a is constituted by a pair of suspension wires. Thus, the parallel spring member 2a functions as a pair of two parallel spring members, but in this embodiment, the driving force by the driving portion 4a acting on the optical component 1a and the urging force by the parallel spring member 2a are applied. The parallel spring member 2a is composed of a pair of first and second parallel spring members 21a and 22a so as to elastically support the optical component 1a in a cantilevered manner from both sides in the Y direction in consideration of the balance of each force. ing. The first parallel spring member 21a is disposed so as to be parallel to the Z direction by being separated by a predetermined distance in the Z direction, and a pair of eleventh and twelfth spring members 21a-1, 21a. -2 and one end of each of the eleventh and twelfth spring members 21a-1 and 21a-2 in the X direction (one end of the first parallel spring member 21a) is connected to the optical component 1a. Each other end portion in the X direction (the other end portion of the first parallel spring member 21a) is coupled to the support member 3a. The second parallel spring member 22a is arranged so as to be parallel to the X direction and spaced apart from the predetermined distance in the Z direction by two pairs of 21st and 22nd spring members 22a-1, 22a-. 2 and one end of each of the 21st and 22nd spring members 22a-1 and 22a-2 in the X direction (one end of the second parallel spring member 22a) is connected to the optical component 1a. Each of the other end portions in the X direction (the other end portion of the second parallel spring member 22a) is connected to the support member 3a.

  The optical component 1a is elastically supported by a support mechanism (parallel spring member in this embodiment) 2a, and includes an array lens 11 to form an optical image of an object on a light receiving surface (imaging surface) of the imaging unit 5. It is a part. More specifically, the optical component 1a includes an array lens 11 having a rectangular shape (including a square) in plan view and a lens holding frame 12a. The optical component 1a may be configured to directly transmit the driving force of the driving unit 4a to the array lens 11, but in this embodiment, the optical component 1a transmits the driving force to the lens holding frame 12a. As described above, the array lens 11 and the lens holding frame 12a are provided.

  The array lens 11 includes a plurality of imaging optical systems 111 arranged in a two-dimensional matrix in two linearly independent directions, more specifically, in two directions of the X direction and the Y direction orthogonal to each other. Each of the plurality of imaging optical systems 111 is a component that includes one or more optical lenses along the optical axis in order to form an optical image of an object on the light receiving surface of the imaging unit 5. In the example shown in FIG. 1, the plurality of imaging optical systems 111 are arranged so that the optical axes are substantially parallel to each other. Therefore, the plurality of imaging units 5 that capture the respective optical images of the object via the plurality of imaging optical systems 111 respectively generate image signals that represent substantially the same subjects that differ from each other only by the parallax. In the example shown in FIG. 1, the array lens 11 includes 16 imaging optical systems 111-11 to 111-44 arranged in a two-dimensional matrix in four rows and four columns. Note that the number of the imaging optical systems 111 is not limited to this, and all the imaging optical systems 111 are not necessarily parallel with respect to the optical axis.

  The lens holding frame 12 a is a member for holding the array lens 11. The lens holding frame 12a is, for example, a short and high tubular member in which a through opening having a shape corresponding to the outer shape of the array lens 11 is formed. In the example shown in FIG. 1, since the outer shape of the array lens 11 is a rectangular shape, the lens holding frame 12a has a rectangular through-opening in a plan view and has a rectangular outer shape. It is. The array lens 11 is fitted into the through-opening of the lens holding frame 12a and fixed by, for example, an adhesive. The lens holding frame 12a includes a first spring attachment portion 121a for attaching one end portion of the support mechanism 2a. More specifically, in the present embodiment, as shown in FIG. 1, a pair of optical components 1a from the both sides thereof (two sets of one pair of spring members) are first and second parallel spring members 21a. (21a-1, 21a-2) and 22a (22a-1, 22a-2) are cantilevered and elastically supported, and accordingly, the first spring mounting portion 121a has two eleventh spring mounting portions 121a. -1 and a twelfth spring mounting portion 121a-2. The pair of eleventh and twelfth spring mounting portions 121a-1 and 121a-2 are prismatic shapes extending in the + Y direction and the -Y direction, respectively, and facing each other through the through-opening. The lens holding frame 12a is formed at each position on one end in the X direction on each outer peripheral side surface (each outer peripheral side surface located on each end in the Y direction) facing each other. The upper and lower surfaces (the upper and lower surfaces of the pair of eleventh and twelfth spring mounting portions 121a-1 and 121a-2) of the first prism mounting portion 121a having a prism shape are one end portions of a pair of parallel spring members 2a ( 1 side of each set of first and second parallel spring members 21a and 22a). Therefore, the length of the first spring mounting portion 121a in the Z direction is equal to that of the parallel spring member 2a. A length corresponding to the distance in the Z direction between the eleventh spring member 21a-1 and the twelfth spring member 21a-2 (the distance in the Z direction between the twenty-first spring member 22a-1 and the twenty-second spring member 22a-2). is there. The lens holding frame 12a includes an engagement protrusion 122a. The engagement protrusion 122a will be described later.

  The support member 3a is a member for supporting the support mechanism 2a. In this embodiment, since the support mechanism 2a is a pair of first and second parallel spring members 21a and 22a, the other end of each of the first and second parallel spring members 21a and 22a is attached to the support member 3a. Thus, the first and second parallel spring members 21a and 22a are supported. More specifically, in the example illustrated in FIG. 1, the support member 3 a includes a base portion 31 and a second spring attachment portion 32 a.

  The base 31 is a plate-like member having a rectangular outer shape. A substantially central region of the base 31 is an attachment region for attaching the imaging unit 5 that receives each light beam of the optical image transmitted through the array lens 11 of the optical component 1a.

  The second spring attachment portion 32a is a member for attaching the other end of the parallel spring member 2a. More specifically, in the present embodiment, as described above, the optical component 1a includes a pair (the two pieces) of the first and second parallel spring members 21a (21a-1, 21a-2), 22a (22a). -1 and 22a-2), the second spring mounting portion 32a is composed of two 21st spring mounting portions 32a-1 and 22nd spring mounting portions 32a-2. Is done. The pair of 21st and 22nd spring attachment portions 32a-1 and 32a-2 are each a prismatic shape extending in the + Z direction, and a pair of parallel spring members 21a attached to the second spring attachment portion 32a. When the optical component 1a is elastically supported via 22a, 22a is an arrangement position where the light beam of each optical image transmitted through the array lens 11 can reach the mounting region of the base 31 in the X direction of the lens holding frame 12a. A substantially vertical position from the one main surface of the base 31 to the arrangement position near the outside of the outer peripheral side surface located at the other end (the position of the other end in the X direction on the one main surface of the rectangular base 31 in the example shown in FIG. 1) Each is formed on the base 31 so as to stand upright. The pair of 21st and 22nd spring mounting portions 32a-1 and 32a-2 are connected to the other end of the parallel spring member 2a (the other end of each pair of the first and second parallel spring members 21a and 22a). ) In the Z direction between the eleventh spring member 21a-1 and the twelfth spring member 21a-2 in the parallel spring member 2a (the twenty-first spring member 22a-1 and the twenty-second spring). A prismatic protrusion having a length corresponding to the distance in the Z direction with respect to the spring member 22a-2 is provided. The upper and lower surfaces (the upper and lower surfaces of the protrusions of the pair of 21st and 22nd spring mounting portions 32a-1 and 32a-2) of the prismatic protrusions are the other ends (one set) of the parallel spring member 2a. Of the first and second parallel spring members 21a and 22a). In the example shown in FIG. 1, the second spring mounting portion 32 a is composed of a pair of 21st and 22nd spring mounting portions 32 a-1 and 32 a-2. Array lens when the optical component 1a is elastically supported via a pair of parallel spring members 21a and 22a each having a prismatic shape that extends in the + Z direction and also extends in the Y direction. 11 is a disposition position at which the light beam of each optical image transmitted through 11 can reach the mounting region of the base 31, and is disposed near the outside of the outer peripheral side surface located at the other end in the + X direction of the lens holding frame 12a. The base 31 may be composed of a single protrusion member formed on the base 31 so as to stand substantially vertically from one main surface of the base 31.

  The first and second parallel spring members 21a and 22a are connected to the optical component 1a and the support member 3a having such a structure as follows. As shown in FIG. 1 (B), each one end in the X direction of the 21st and 22nd spring members 22a-1 and 22a-2 of the second parallel spring member 22a is connected to the 12th spring mounting portion 121a-2. It is connected to the optical component 1a at one end in the X direction of the outer peripheral side surface located at the other end in the Y direction of the lens holding frame 12a of the optical component 1a by being fixed to each of the upper and lower surfaces by an adhesive or the like, and The other end in the X direction of the 21st and 22nd spring members 22a-1 and 22a-2 of the second parallel spring member 22a is, for example, an adhesive on each of the upper and lower surfaces of the protrusion in the 22nd spring mounting portion 32a-2. By being fixed by, etc., it is connected to the support member 3a.

  Similarly, one end of each of the eleventh and twelfth spring members 21a-1 and 21a-2 of the first parallel spring member 21a in the X direction is, for example, an adhesive on each of the upper and lower surfaces of the eleventh spring mounting portion 121a-1. Is fixed to the optical component 1a at one end in the X direction of the outer peripheral side surface located at one end in the Y direction of the lens holding frame 12a of the optical component 1a, and the first parallel spring member 21a The other end portions in the X direction of the eleventh and twelfth spring members 21a-1 and 21a-2 are fixed to the upper and lower surfaces of the protruding portion in the twenty-first spring mounting portion 32a-1, for example, by an adhesive or the like. , Connected to the support member 3a.

  The drive unit 4a is an apparatus that is connected to the control processing unit 8a and moves the optical component 1a along the axial direction of a predetermined axis in accordance with the control of the control processing unit 8a. In the present embodiment, for example, the drive unit 4a is an actuator 4a that engages with the optical component 1a and moves the optical component 1a along the axial direction of a predetermined axis. Such an actuator 4a is, for example, an SMA actuator provided with a shape memory alloy (Shape Memory Alloy, hereinafter abbreviated as “SMA”) that is long in one direction (band shape, ribbon shape, tape shape). A bimetallic actuator provided with a plate-like bimetal elongated in one direction, a monomorph actuator provided with a plate-shaped monomorph (unimorph) elongated in one direction, and the like. Since the SMA actuator and the bimetal actuator are each formed of a metal material, and the monomorph actuator is formed including a metal material, the SMA actuator, the bimetal actuator, and the monomorph actuator are optical components as described later. When it moves with the movement of 1a, it can be elastically deformed and has a predetermined rigidity until the elastic limit is exceeded. Therefore, the actuator 4a preferably moves within the range of elastic deformation when moving with the movement of the optical component 1a as described later.

  In order to receive the driving force of the driving unit 4a, the lens holding frame 12a includes an engaging protrusion 122a for engaging with the driving unit 4a and receiving the driving force in the present embodiment. . More specifically, the engagement protrusion 122a has an elliptical column shape extending outward, and is formed on the outer peripheral side surface of the lens holding frame 12a. In the example shown in FIG. 1, the engagement protrusion 122a is orthogonal to a straight line (straight line along the Y direction) connecting the attachment positions of the pair of eleventh and twelfth spring attachment parts 121a-1 and 121a-2. The outer circumferential side surface located in the direction (X direction) and located at one end in the X direction is formed at a substantially central position in the Y direction and close to the one end in the -Z direction. An engagement surface that engages with the drive portion 4a in the engagement projection portion 122a is a curved surface so that the engagement projection portion 122a and the drive portion 4a abut against each other so as to be smoothly slidable.

  In the present embodiment, for example, the SMA actuator 4a is used as the drive unit 4a, and the control processing unit 7 controls the SMA actuator 4a by energizing and heating.

  SMA has a crystal structure called an austenite phase (parent phase) on the higher temperature side than the transformation temperature, and a crystal structure called martensite phase on the lower temperature side. A general metal material does not return to its original shape when a predetermined external force is applied. However, SMA does not return to the shape of martensite when it is deformed by applying a predetermined external force in the martensitic phase state, but when the temperature exceeds the transformation temperature. The phase transforms from the site phase to the austenite phase, and the shape recovers to its original shape before deformation. The SMA actuator 41a using SMA generates driving force by utilizing this characteristic. By the way, an actuator that repeats the operation for increasing and decreasing temperature is required to have bidirectionality corresponding to this temperature change. Although some SMAs have bi-directionality, SMA usually recovers its shape to a memorized shape due to heating, but it remains in its memorized shape even after cooling, and has only one direction. For this reason, in one aspect of the SMA actuator, a bias applying member that applies an external force (bias) that deforms the SMA in another direction different from the one direction after the shape recovery is required. In the SMA actuator 4a of the present embodiment, 1 A pair of parallel spring members 21a and 22a functions as the bias applying member.

  The SMA actuator 4a has a predetermined shape stored in advance, and applies a driving force to the optical component 1a by being heated. The SMA actuator 4a is formed of a Ni—Ti alloy, a Cu—Al—Ni alloy, a Cu—Zn alloy, a Cu—Zn—Al alloy, a Ni—Al alloy, or the like. The Ni—Ti alloy is excellent in strength, toughness, corrosion resistance, and wear resistance, and is suitable for the SMA actuator 4a. The SMA actuator 4a is disposed on one main surface of the base 31 of the support member 3a at a position where the SMA actuator 4a can be engaged with the engagement protrusion 122a of the lens holding frame 12a. More specifically, in the example shown in FIG. 1, the SMA actuator 4 a extends along the Y direction while engaging with the engagement protrusion 122 a with a predetermined frictional force at one end in the Y direction. The rectangular base portion 31 is disposed on one main surface of the base portion 31 by being fixed, for example, with an adhesive or the like at the other end portion in the Y direction on the one main surface of the rectangular base portion 31. In the present embodiment, the predetermined shape is such that the long portion ahead in the Y direction is lifted upward in the + Z direction from a position (bending position) away from the other end fixed to the base 31 by a predetermined distance. The shape bent at the bending position.

  The plurality of imaging units 5 are arranged on the image side of the optical component 1a, correspond to the plurality of imaging optical systems 111 in the array lens 11, and each imaging surface (each light receiving surface) by each of the plurality of imaging optical systems 111 in the array lens 11. Each optical image of the subject imaged in (1) is captured and an image signal (or each image data) is output, and is connected to the control processing unit 8a and operates in accordance with the control of the control processing unit 8a. In the present embodiment, the plurality of imaging units 5 correspond to the plurality of imaging optical systems 111 in the array lens 11 in two linearly independent directions, more specifically, two directions of X and Y directions orthogonal to each other. They are arranged in a two-dimensional matrix. The plurality of imaging units 5 may be the number of imaging elements 5 corresponding to the number of eyes of the array lens 11 (the number of imaging optical systems 111, which is 16 in the example shown in FIG. 1), but in this embodiment. The plurality of imaging units 5 are one imaging element 5, and the effective area of the imaging element 5 is divided into a number of divided areas corresponding to the number of eyes of the array lens 11, and each of the eyes of the array lens 11 Each formed optical image is configured to be captured in each divided region. Such an image sensor 5 has R (red), G (green), and B (blue) according to the amount of light in each optical image of an object (subject) imaged by each of the plurality of imaging optical systems 111 in the array lens 11. ) Of each color component is photoelectrically converted and output to the control processing unit 7 for performing predetermined image processing. The image sensor 5 is, for example, a CCD (Charge Coupled Device) type image sensor, a CMOS (Complementary Metal Oxide Semiconductor) type image sensor, or the like.

  The temperature detection unit 6 is a device for detecting the temperature of the array lens 11 and includes, for example, a temperature sensor such as a thermistor. The temperature detection unit 6 is connected to the control processing unit 8a, and outputs the detected temperature to the control processing unit 8a. Since the temperature detection unit 6 detects the temperature of the array lens 11, it is disposed on the array lens 11 or in the vicinity of the array lens 11. In this embodiment, the temperature detection part 6 is arrange | positioned on the one main surface of the base 31 in the support member 3a in the area | region except the said attachment area | region, for example. More specifically, in the example shown in FIG. 1, the temperature detection unit 6 is a region outside the attachment region, and is the position of the other end in the X direction on one main surface of the rectangular base 31. It is disposed on one main surface of the base 31 by being fixed, for example, with an adhesive or the like at a position slightly closer to one end than the center position in the Y direction.

  The gravity direction detection unit 7a is a device for detecting the direction of gravity acting on the array lens 11, and includes, for example, a three-axis acceleration sensor that detects acceleration. The gravity direction detection unit 7a is connected to the control processing unit 8a, and outputs the detected direction of gravity to the control processing unit 8a. The gravity direction detector 7 a detects the direction of gravity acting on the array lens 11, and is therefore disposed on the array lens 11 or a member that changes its posture together with the array lens 11. In the present embodiment, the gravitational direction detection unit 7a is disposed on one main surface of the base 31 in the support member 3a, for example, in a region excluding the attachment region. More specifically, in the example shown in FIG. 1, the gravity direction detector 7 a is an area outside the attachment area, and is the position of the other end in the X direction on one main surface of the rectangular base 31. Then, it is disposed on one main surface of the base 31 by being fixed, for example, with an adhesive or the like, at a position slightly along the other end from the center position in the Y direction.

  The control processing unit 8a is a device that controls the operation of the entire imaging apparatus Ia by controlling each part of the imaging apparatus Ia according to the function to capture. The control processing unit 8a includes, for example, a CPU (Central Processing Unit) and its peripheral devices.

  The storage unit 9 is a nonvolatile memory such as a ROM (Read Only Memory) or an EEPROM (Electrically Erasable Programmable Read Only Memory) that stores various programs executed by the CPU of the control processing unit 8a and data necessary for the execution. A memory element, a volatile memory element such as a RAM (Random Access Memory) serving as a so-called working memory of the CPU of the control processing unit 7, and a peripheral circuit thereof are configured. The storage unit 9 functionally includes a temperature correction data storage unit 91 that stores temperature correction data in advance, and a correction data storage unit 92 that stores correction data in advance.

  For the temperature correction data, each optical image (each real optical image) of the subject actually formed on each imaging surface by each of the plurality of imaging optical systems 111 in the array lens 11 is used as a reference when designing the imaging apparatus Ia, for example. Is a data for correction so that each optical image (each reference temperature optical image) of a subject formed on each imaging surface by each of the plurality of imaging optical systems 111 in the array lens 11 at the reference temperature set as . The temperature correction data is created at each in-focus position at a predetermined temperature interval at an appropriate timing, for example, at the time of production or shipment, and is stored in the temperature correction data storage unit 91.

  If there is a difference between the temperature at which each of the plurality of imaging optical systems 111 in the array lens 11 is actually imaged on each imaging surface and the reference temperature, the optical image deteriorates due to various causes.

  For example, when the array lens 11 is tilted due to a temperature change from the reference temperature, the optical image is blurred according to the position of each individual eye (each imaging optical system 111). This is a decrease in resolution that occurs because the focus position shifts. Further, when the in-focus position shifts or tilts (so-called one-sided blur), various aberrations of the optical lens in each eye change, thereby changing the shape of the optical image (here, the contour of the optical image). That is, when the array lens 11 is tilted, the resolution decreases (blurs) depending on the position of the individual eye, and the shape of the optical image changes. For example, when the array lens 11 shown in FIG. 3A tilts by rotating around the Y axis as shown in FIG. 3B, each imaging optical system (each individual eye) 111-31 in 3 rows and columns. The optical image formed on each imaging surface by 111-34 deteriorates as shown in FIG. More specifically, the optical image by the imaging optical system 111-31 whose position is on the left side (3 rows and 1 column side) is not deteriorated, and the position is from the left side (3 rows and 1 column side) to the right side (3 rows and 1 column side). The resolution decreases and the shape of the optical image changes as it goes to (3 rows and 4 columns). In FIG. 3, the outline of the optical image (actual optical image) actually formed on the imaging surface by the imaging optical system 111 is indicated by a broken line, and the outline of the optical image corrected by the temperature correction data is one point. It is indicated by a chain line.

  For such contour shape distortion, the temperature correction data is created in advance so as to correct the contour shape distortion generated in the optical image due to the temperature change from the reference temperature, and stored in the temperature correction data storage unit 91. Remembered. For example, a mapping function for converting an optical image (real optical image) actually formed on the imaging surface by the imaging optical system 111 into an optical image at a reference temperature is obtained in advance, and this mapping function is used as temperature correction data. The The mapping function of the temperature correction data may be stored in the temperature correction data storage unit 91 as a functional expression, or may be stored in the temperature correction data storage unit 91 as a lookup table.

  Further, for example, if the position of each imaging optical system (each eye) 111 is shifted in a plane orthogonal to the predetermined axis (for example, the optical axis of the imaging element 5) due to a temperature change from the reference temperature, the optical The image deviates from the original image formation position (image formation position at the reference temperature). In the image pickup apparatus using the array lens 11, each position (each region) on the image pickup device 5 of each optical image formed by each image pickup optical system (each eye) 111 is stored in advance. When the signal is read, the position (area) is specified, and the signal at the position (area) is read. For this reason, if the position of the image pickup optical system (single eye) 111 is shifted due to a temperature change, the image formation position of the optical image is shifted. Therefore, the position (region) designated when reading the image signal from the image pickup device 5 is changed. If it is not corrected, the image of the individual eye will not be read correctly. For example, as shown in FIG. 4A, when the array lens 11 is displaced, the optical elements formed on the respective imaging surfaces by the respective imaging optical systems (each eye) 111-31 to 111-34 in three rows and columns. The image (actual optical image) is displaced as shown in FIG. More specifically, the amount of misalignment increases as the position of the individual eye moves from the right side (3 rows and 4 columns side) to the left side (3 rows and 1 column side), and the misalignment direction also changes. For this reason, if the image signal is read out by designating the original position (region) without correcting the position, a correct image signal for a single eye cannot be obtained. In FIG. 4, the contour line of the optical image actually formed on the imaging surface by a single eye is indicated by a broken line, and the contour line of the optical image formed on the imaging surface by the original single eye at the reference temperature. (The contour line of the optical image corrected by the temperature correction data) is indicated by a one-dot chain line.

  For such a positional deviation, the temperature correction data is created in advance so as to correct the positional deviation of each imaging optical system that occurs in a plane orthogonal to the predetermined axis due to a temperature change from the reference temperature. And stored in the temperature correction data storage unit 91. For example, the position of the optical image at the reference temperature (that is, when reading the image signal) to the position (region) of the optical image (real optical image) actually formed on the imaging surface by the imaging optical system (single eye) 111. The position conversion function for converting the position (region) specified in (1) is obtained in advance, and this position conversion function is used as temperature correction data. The position conversion function of the temperature correction data may be stored in the temperature correction data storage unit 91 as a functional equation, or may be stored in the temperature correction data storage unit 91 as a lookup table.

  In the present embodiment, the temperature correction data includes distortion correction data for correcting distortion of the shape generated in the optical image due to the temperature change from the reference temperature, and the predetermined axis due to the temperature change from the reference temperature. Is configured to include both positional deviation correction data for correcting the positional deviation of each imaging optical system that occurs in a plane orthogonal to the temperature correction data, if either one of the correction data can be ignored, the temperature correction data is Only either one may be sufficient.

  Further, the correction data is obtained by converting temperature correction data used by the image forming unit 82 described later into temperature correction data used by the image forming unit 82 in a reference posture set as a reference when designing the imaging device Ia, for example. It is data for correcting to become. The reference posture is a posture in a standard state set as a standard use state at the time of design, for example, in the present embodiment, for example, as shown in FIG. The state in which the image pickup apparatus Ia is placed with the optical axis and the direction of gravity aligned is set, and this is the attitude of the array lens 11 in this standard state. The correction data is created in each posture at a predetermined interval at an appropriate timing such as at the time of production or shipment, and stored in the correction data storage unit 92.

  As a result of this change in posture, an optical image formed on the imaging surface by the imaging optical system (single eye) 111 may cause a change in its contour shape and a positional shift, as in the case of temperature correction data. For example, as shown in FIG. 1B, the optical axis is along the X direction as shown in FIG. 1C from the reference posture in which the optical axis is along the Z direction, and gravity acts from the cantilever side. When the attitude of the imaging device Ia changes to such a vertical attitude, the array lens 11 is cantilevered and elastically supported by the parallel spring member 2a via the lens holding frame 12a. The posture in the ideal case indicated by a broken line in (C) is not achieved, and an inclination is generated by rotation around the Y axis, and the position is shifted to the cantilever side.

  Due to the inclination of the array lens 11, the shape of the optical image actually formed on the imaging surface by the imaging optical system (single eye) 111 changes as in the case of the temperature correction data described above. For example, the optical images formed on the imaging surfaces by the imaging optical systems (each eye) 111-31 to 111-34 in 3 rows and columns are deteriorated as shown in FIG. More specifically, the optical image (actual optical image) by the imaging optical system 111-31 whose position is the left side (3 rows and 1 column side) is not deteriorated due to the posture change, and the position is the left side (3 rows). The shape of the optical image (actual optical image) greatly collapses from the first column side to the right side of the paper (3 rows and 4 columns side). The shape of the optical image changes in a plurality of contour shapes according to the magnitude of the posture change, and collapses in a plurality of patterns. For example, an optical image (actual optical image) by the 3 × 2 imaging optical system 111-32 shown in FIG. 5B and an optical by the 3 × 3 imaging optical system 111-33 shown in FIG. 5C. The change of the contour shape (disintegration, pattern) with the image (actual optical image) is the same, and is a disintegration method that expands approximately isotropically with respect to the optical image when there is no change in posture. On the other hand, the change (disintegration, pattern) of the contour shape of the optical image (real optical image) by the 3 × 4 imaging optical system 111-34 shown in FIG. This is a collapse method that spreads in one direction with respect to the optical image. In FIG. 5, the outline of the optical image (real optical image) actually formed on the imaging surface by the imaging optical system 111 is indicated by a broken line, and the outline of the corrected optical image is indicated by a solid line. The outline of the optical image corrected by the temperature correction data is indicated by a one-dot chain line.

  For such contour distortion, correction data is created in advance and stored in the correction data storage unit 92 so as to correct the distortion of the contour generated in the optical image due to the posture change from the reference posture. The For example, a mapping function for converting an optical image (real optical image) actually formed on the imaging surface by the imaging optical system 111 into an optical image in a reference posture (an optical image before temperature correction) is obtained in advance. The mapping function is used as corrected data. The mapping function of the correction data may be stored in the correction data storage unit 92 as a function expression, or may be stored in the correction data storage unit 92 as a lookup table. As described above, the correction data includes distortion correction data for correcting distortion generated in the optical image due to the posture change from the reference posture. In this case, as described above, since the shape of the optical image is collapsed in a plurality of patterns according to the magnitude of the posture change, the distortion correction data is prepared in advance for each change in the plurality of contour shapes. It is preferable. For example, when the posture change from the reference posture is equal to or greater than 0 and within the first range less than the first threshold, it is a collapse method that expands substantially isotropically as shown in FIGS. A first mapping function for such collapse is obtained in advance, and this first mapping function is used as the first distortion correction data. When the posture change from the reference posture is within the second range that is equal to or greater than the first threshold value, the collapse method spreads in one direction as shown in FIG. 5D, and the second mapping for such collapse method. A function is obtained in advance, and this second mapping function is used as second distortion correction data. As described above, since the distortion correction data is prepared in advance for each change in the plurality of contour shapes, the imaging apparatus Ia may select the correction data according to the posture obtained by the posture calculation unit 84a, and the temperature correction. The calculation for correcting the data becomes unnecessary, and the temperature correction data can be easily corrected.

  In the case of the first distortion correction data, the distortion correction data may be used by changing the degree of application using the distortion correction data based on the attitude obtained by the attitude calculation unit 84a described later. For example, the optical image (actual optical image) by the 3 × 3 imaging optical system 111-33 shown in FIG. 5C is the optical by the 3 × 2 imaging optical system 111-32 shown in FIG. 5B. Since the image (real optical image) is greatly collapsed, the distortion correction data is used in the first application amount (for example, 1.2 times) with respect to the optical image obtained by the imaging optical system 111-32 in 3 rows and 2 columns, The distortion correction data is used in a second application amount (eg, 1.3 times) larger than the first application amount with respect to the optical image obtained by the imaging optical system 111-33 of 3 rows and 3 columns. In this case, when the degree of collapse is different between the X direction and the Y direction, the application amount may be set for each of the X direction and the Y direction. For example, the distortion correction data for the optical image obtained by the imaging optical system 111-33 of 3 rows and 3 columns shown in FIG. 5C is the second application amount (eg, 1.3 times) in the X direction with respect to the X direction. Used in the second application amount (for example, 1.4 times) in the Y direction with respect to the Y direction. In such a configuration, the imaging device Ia may change the degree of application according to the posture obtained by the posture calculation unit 84a, and can easily correct the temperature correction data.

  On the other hand, the optical image (actual optical image) actually formed on the imaging surface by the imaging optical system (single eye) 111 due to the positional deviation on the cantilever side is the same as the temperature correction data described above. Deviation occurs. That is, the actual optical image deviates from the position of the optical image before correction by the temperature correction data in the reference posture. For example, when the array lens 11 is displaced due to the posture change, the optical images (actual optical images) formed on the respective imaging surfaces by the respective imaging optical systems (each individual eye) 111-31 to 111-34 in three rows and columns are as follows. As shown in FIG. More specifically, an optical image (actual optical image) formed on each imaging surface by each imaging optical system (each eye) 111-31 to 111-34 in three rows and columns is a cantilever side in the X direction. Sneak away. In FIG. 6, the outline of the optical image actually formed on the imaging surface by the imaging optical system (single eye) 111 is indicated by a broken line, the outline of the corrected optical image is indicated by a solid line, and the reference The outline of the optical image formed on the imaging surface by the imaging optical system (single eye) 111 at the original position at the temperature (the outline of the optical image corrected by the temperature correction data) is indicated by a one-dot chain line. .

  For such a positional deviation, the correction data is created in advance so as to correct the positional deviation of each imaging optical system that occurs in a plane orthogonal to the predetermined axis due to the attitude change from the reference attitude, It is stored in the correction data storage unit 82. For example, the position of the optical image (temperature-corrected optical image) in the reference orientation to the position (region) of the optical image (real optical image) actually formed on the imaging surface by the imaging optical system (single eye) 111 Is obtained in advance, and this position conversion function is used as correction data. The position conversion function of the correction data may be stored in the correction data storage unit 92 as a function expression, or may be stored in the correction data storage unit 92 as a lookup table.

  The correction data may be given in advance to at least two imaging optical systems 111 of the plurality of imaging optical systems (single eyes) 111 in the array lens 11. In this case, correction data for at least two imaging optical systems 111 may be used, so that the correction data storage unit 82 can store the correction data with a small storage capacity. The correction data for the imaging optical system 111 to which correction data is not given in advance is interpolated from the correction data given in advance.

  The control processing unit 8a is functionally configured with a drive unit control unit 81, an image forming unit 82, a correction data correction unit 83, and an attitude calculation unit 74a by executing a control processing program.

  The drive control unit 81 controls the drive of the drive unit 4a. In this embodiment, since the SMA actuator 4a is used as the drive part 4a, the drive part control part 81 controls by energizing and heating the SMA actuator 4a.

  The SMA actuator 4a is heated by generating Joule heat due to its own resistance when supplied with electric power from the drive unit control unit 81 of the control processing unit 8a and energized. When the SMA actuator 4a reaches the transformation temperature, the SMA actuator 4a recovers to the shape stored in advance according to the temperature. In this embodiment, when heated, the one end in the Y direction of the SMA actuator 4a is gradually lifted in the Z direction. As a result, a driving force is generated by the SMA actuator 4a, and this driving force is transmitted to the optical component 1a via the engaging protrusion 122a. The optical component 1a is pushed up in the Z direction by this driving force, and a set of parallel springs. Since it is cantilevered by the members 21a and 22a, it is guided straight and moved in the + Z direction along the predetermined axis. On the other hand, when the supply of power is stopped, the SMA actuator 4a cools down by natural heat dissipation, gradually returns to a flat shape by a bias in the −Z direction by the pair of parallel spring members 21a and 22a, and becomes horizontal. Thus, the optical component 1a moves in the −Z direction. Therefore, the energization heating amount is set according to the target position in the Z direction of the array lens 11.

  The image forming unit 82 performs predetermined image processing on the image signals of the R (red), G (green), and B (blue) color components obtained by the image sensor 5 to generate image data. is there. The predetermined image processing includes, for example, amplification processing and digital conversion processing performed on an analog output signal from the image sensor 5, processing for determining an appropriate black level for the entire image, γ correction processing, white balance adjustment (WB) This is well-known image processing such as (adjustment) processing, contour correction processing, and color unevenness correction processing. In this embodiment, when the image of the optical image of the subject is formed by such image processing, the image forming unit 82 uses the temperature correction data stored in advance in the temperature correction data storage unit 91 as the temperature detection. By using based on the temperature detected by the unit 6, each optical image of the subject imaged on each imaging surface by each of the plurality of imaging optical systems 111 in the array lens 11 is corrected, and each optical image of the subject is corrected. Each image is formed. The image forming unit 82 may form and output each image corresponding to each optical image by each of the plurality of imaging optical systems 111, and further, the resolution of each image is higher than each image by so-called super-resolution processing. It is also possible to form and output a single image having a high height.

  The posture calculation unit 84a obtains the posture of the array lens 11 based on the direction of gravity detected by the gravity direction detection unit 7a. For example, a correspondence relationship between the direction of gravity detected by the gravity direction detection unit 7a and the posture of the array lens 11 is obtained in advance, and this correspondence relationship is stored in the storage unit 9, so that the posture calculation unit 84c The attitude of the array lens 11 can be obtained from the direction of gravity detected by the gravity direction detector 7a.

  The correction data correcting unit 73 corrects the temperature correction data used in the image forming unit 82 by using the correction data correcting unit 73 based on the attitude of the array lens 11 obtained by the attitude calculating unit 84a. More specifically, the correction data correction unit 73 uses the correction data stored in advance in the correction data storage unit 82 based on the attitude of the array lens 11 obtained by the attitude calculation unit 84a, thereby forming an image. The temperature correction data used in the unit 82 is corrected.

  In such an imaging apparatus Ia, when shooting is instructed by operating an unillustrated shutter button or the like, the control processing unit 8a controls each unit, causes the imaging device 5 to generate an image signal, and causes the temperature detection unit 6 to The temperature is detected and the direction of gravity is detected by the gravity direction detector 7a. The temperature detection unit 6 detects the temperature and outputs the result to the control processing unit 8a, and the gravity direction detection unit 7a detects the direction of gravity and outputs the result to the control processing unit 8a.

  The image forming unit 82 uses the temperature correction data stored in advance in the temperature correction data storage unit 91 based on the temperature of the array lens 11 detected by the temperature detection unit 6. Each optical image of the subject imaged on each imaging surface by each of the imaging optical systems 111 is corrected to form each image of each optical image of the subject. At the time of forming each image, the correction data correction unit 83 converts the correction data stored in advance in the correction data storage unit 92 into the posture obtained from the detection result of the gravity direction detection unit 7a by the posture calculation unit 84a. Based on this, the temperature correction data used by the image forming unit 82 is corrected.

  In the imaging apparatus Ia in the present embodiment, each optical image of a subject formed on each imaging surface by each of the plurality of imaging optical systems 111 in the array lens 11 is converted into each of the plurality of imaging optical systems 111 in the array lens 11 at a reference temperature. Temperature correction data is prepared in advance so as to correct each optical image of the subject imaged on each imaging surface, and when the image forming unit 82 forms an image, the temperature correction data is used as the temperature detection unit 6. By using the temperature based on the temperature of the array lens 11 detected in step S1, each optical image of the subject imaged on each imaging surface by each of the plurality of imaging optical systems 111 in the array lens 11 is corrected. For this reason, the imaging device Ia according to the present embodiment can suppress image deterioration due to a temperature change.

  Here, when the attitude of the array lens 11 changes with the attitude change of the own apparatus, as described above, even if the deterioration due to the temperature change is corrected, the image formed by the imaging device is deteriorated. Therefore, when using the temperature correction data, the imaging apparatus Ia in the present embodiment corrects the temperature correction data based on the attitude of the array lens 11 obtained by the attitude calculation unit 84a.

  Therefore, the imaging apparatus Ia according to the present embodiment can suppress image deterioration due to unstable elements of the drive mechanism unit while suppressing image deterioration due to temperature change even if the attitude change of the device itself occurs.

  In addition, since the imaging apparatus Ia according to the present embodiment supports the array lens 11 in a cantilever manner, the tilt is likely to occur and the positional deviation is likely to occur due to posture change and unstable elements. As described above, the imaging apparatus Ia according to the present embodiment can effectively suppress image deterioration.

  Next, another embodiment will be described.

(Second Embodiment)
FIG. 7 is a diagram illustrating a structural configuration of the imaging apparatus according to the second embodiment. FIG. 7A is a plan view, and FIG. 7B is a side view in a reference posture, which is the posture of the array lens in a state where the imaging device Ib is placed with the optical axis and the direction of gravity aligned. FIG.

  Although the imaging device Ia in the first embodiment described above supports the optical component 1a by the parallel spring member 2a, the imaging device Ib in the second embodiment is a device that supports the optical component 1b by the link mechanism 2b.

  Such an imaging apparatus Ib in the second embodiment includes, for example, an optical component 1b, a parallel link member 2b, a support member 3b, a driving unit 4a, a plurality of imaging units 5, as shown in FIG. A temperature detection unit 6, a gravity direction detection unit 7a, a control processing unit 8a, and a storage unit 9 are provided. The drive unit 4a, the plurality of imaging units 5, the temperature detection unit 6, the gravity direction detection unit 7a, the control processing unit 8a, and the storage unit 9 in the imaging device Ib of the second embodiment are respectively the imaging device of the first embodiment. Since it is the same as the drive unit 4a, the plurality of imaging units 5, the temperature detection unit 6, the gravity direction detection unit 7a, the control processing unit 8a, and the storage unit 9 in Ia, description thereof is omitted. Since the electrical configuration of the imaging apparatus Ib of the second embodiment is the same as the electrical configuration of the imaging apparatus Ia of the first embodiment, description thereof is omitted.

  The optical component 1b is a component including the array lens 11 in order to form an optical image of an object on the light receiving surface of the image pickup device 5 in the same manner as the optical component 1a. The optical component 1a is supported by the parallel spring member 2a, but the optical component 1b is supported by the parallel link member 2b. Such an optical component 1b includes, for example, a rectangular array lens 11 and a lens holding frame 12b in plan view in the present embodiment. Since the array lens 11 of the optical component 1b is the same as the array lens 11 of the optical component 1a, description thereof is omitted.

  The lens holding frame 12b is a member for holding the array lens 11 similarly to the lens holding frame 12a. For example, the lens holding frame 12b is a short and high-profile tubular member in which a through opening having a shape corresponding to the outer shape of the array lens 11 is formed. It is. In the example shown in FIG. 7, since the outer shape of the array lens 11 is a rectangular shape in plan view, the lens holding frame 12b has a rectangular through-opening in plan view and has a rectangular outer shape. It is a cylindrical member. The array lens 11 is fitted into the through-opening of the lens holding frame 12b and fixed by, for example, an adhesive. As described above, in the example shown in FIG. 7, the lens holding frame 12 b is configured by a frame that surrounds the outer periphery of the array lens 11 and holds the array lens.

  Similar to the lens holding frame 12a of the optical component 1a, the lens holding frame 12b includes an engaging protrusion 122a that engages with the driving unit 4a and receives the driving force of the driving unit 4a. In the example shown in FIG. 7, the engagement protrusion 122 a extends in the X direction in the outward direction to the approximate center position in the Z direction on the outer peripheral side surface located at one end in the X direction. Thus, it is formed in a column shape.

  The parallel link member 2b includes a pair of (two) link members that are long in one direction, and the pair of link members are arranged so as to be parallel to each other in the long direction (stretching direction). Composed. Such a parallel link member 2b is comprised by a pair of plate-shaped member, for example. As described above, the parallel link member functions as a pair of two parallel link members. However, in this embodiment, the optical component 1b is considered in consideration of the balance with respect to the driving force by the driving unit 4a acting on the optical component 1b. The parallel link member 2b is composed of a pair of first and second parallel link members 21b and 22b so as to be cantilevered from both sides in the Y direction. The first parallel link member 21b includes a pair of eleventh and twelfth link members 21b-1 and 21b-2. The eleventh and twelfth link members 21b-1 and 21b-2 are positioned at one end in the Y direction of the lens holding frame 12b so as to be spaced apart from each other in the Z direction and extend in the X direction. It is each arrange | positioned along an outer peripheral side surface. Similarly, the second parallel link member 22b includes a pair of 21st and 22nd link members 22b-1 and 22b-2. The 21st and 22nd link members 22b-1 and 22b-2 are located at the other end in the Y direction of the lens holding frame 12b so as to be spaced apart from each other in the Z direction and extend in the X direction. It is each arrange | positioned along an outer peripheral side surface.

  The lens holding unit described above is used to engage with the first and second parallel link members 21b (21b-1, 21b-2) and 22b (22b-1, 22b-2) to form a parallel link mechanism. The frame 12 b further includes first and second link rotation shafts 123 and 124. More specifically, the first link rotation shaft 123 is engaged with the pair of eleventh and twelfth link members 21b-1 and 21b-2, so that the pair of eleventh and twelfth link rotation shafts 123 is engaged. -1, 123-2 (not shown). Each of the eleventh and twelfth link rotating shafts 123-1, 123-2 is a cylindrical protrusion, and they are spaced apart from each other in the Z direction by one end in the Y direction of the lens holding frame 12b. Are formed at one end in the X direction of the outer peripheral side surface located at, so as to extend in the outer Y direction. Similarly, the second link rotating shaft 124 is engaged with the pair of 21st and 22nd link members 22b-1 and 22b-2, so that the pair of 21st and 22nd link rotating shafts 124-1, 124-2. These 21st and 22nd link rotating shafts 124-1 and 124-2 are cylindrical projections, which are spaced apart from each other in the Z direction by the other end of the lens holding frame 12 b in the Y direction. Is formed at one end in the X direction of the outer peripheral side surface located in the direction extending in the outward -Y direction.

  In order to engage with the eleventh and twelfth link rotating shafts 123-1 and 123-2, at the respective one ends in the X direction of the eleventh and twelfth link members 21 b-1 and 21 b-2, respectively. Are formed with circular through openings that are slightly larger in diameter than the diameters of the columnar eleventh and twelfth link rotating shafts 123-1, 123-2. The eleventh link rotating shaft 123-1 is fitted into the circular through opening of the eleventh link member 21b-1, and the eleventh link member 21b-1 is rotatably connected to the eleventh link rotating shaft 123-1. Similarly, the twelfth link rotating shaft 123-2 is fitted into the circular through opening of the twelfth link member 21b-2, and the twelfth link member 21b-2 is rotatably connected to the twelfth link rotating shaft 123-2. The

  Similarly, in order to engage with the 21st and 22nd link rotating shafts 124-1 and 124-2, one end of each of the 21st and 22nd link members 22 b-1 and 22 b-2 in the X direction is Circular through-openings that are slightly larger in diameter than the diameters of the columnar 21st and 22nd link rotating shafts 124-1 and 124-2 are formed. The twenty-first link rotating shaft 124-1 is fitted into the circular through opening of the twenty-first link member 22b-1, and the twenty-first link member 22b-1 is rotatably connected to the twenty-first link rotating shaft 124-1. Similarly, the 22nd link rotating shaft 124-2 is fitted in the circular through opening of the 22nd link member 22b-2, and the 22nd link member 22b-2 is rotatably connected to the 22nd link rotating shaft 124-2. The

  Accordingly, one end in the X direction of each of the eleventh and twelfth link members 21b-1 and 21b-2 is one of the outer circumferential side surfaces located at one end in the Y direction of the lens holding frame 12b of the optical component 1b. The one end in the X direction in each of the 21st and 22nd link members 22b-1 and 22b-2 is connected to the other end in the Y direction in the lens holding frame 12b of the optical component 1b. It is connected to the optical component 1b at one end in the X direction on the outer peripheral side surface. Thus, the first and second parallel link members 21b and 22b cantilever support the optical component 1b from both sides in the Y direction.

  The support member 3b is a member for supporting the optical component 1b, to which the other ends of the parallel link members 21b and 22b are attached, similarly to the support member 3a. More specifically, in the example illustrated in FIG. 7, the support member 3 b includes a base portion 31 and a link attachment portion 32. Since the base 31 of the support member 3b is the same as the base 31 of the support member 3a, the description thereof is omitted.

  The link attachment part 32b is a member for attaching the other end part of the parallel link member 2b. More specifically, in this embodiment, as described above, the optical component 1b includes a pair (the two pieces) of the first and second parallel link members 21b (21b-1, 21b-2), 22b (22b). -1, 22b-2), so that the link attachment portion 32b includes two first link attachment portions 32b-1 and 32b-2. The pair of first and second link attachment portions 32b-1 and 32b-2 are prismatic shapes extending in the upward Z direction, and a pair of first and second parallel attachments attached to the link attachment portion 32b. When the optical component 1b is supported via the link members 21b and 22b, the arrangement position is such that the light flux of each optical image transmitted through the array lens 11 can form an image on the image sensor 5 on the base 31, and the lens holding frame 12b. The arrangement position in the vicinity of the outer side of the outer peripheral side surface located at the other end in the X direction in (in the example shown in FIG. 7, the position of the other end in the X direction on one main surface of the rectangular base 31 is predetermined in the Y direction Are formed on the base 31 so as to stand substantially vertically from one main surface of the base 31. The pair of first and second link attachment portions 32b-1 and 32b-2 are respectively connected to the other end of the pair of parallel link members 2b (the pair of first and second parallel link members 21b and 22b). In order to attach each other end), the third and fourth link rotating shafts 321 and 322 are provided. More specifically, the third link rotation shaft 321 is engaged with the pair of eleventh and twelfth link members 21b-1 and 21b-2, so that the pair of 31st and 32nd link rotation shafts 321 is engaged. -1, 321-2 (not shown). Each of the 31st and 32nd link rotating shafts 321-1 and 321-2 is a cylindrical protrusion, and these are spaced apart from each other in the Z direction by a Y in the first link mounting portion 32b-1. It is formed on the outer surface in the direction so as to extend outward in the Y direction. Similarly, the fourth link rotating shaft 322 is engaged with the pair of twenty-first and twenty-second link members 22b-1 and 22b-2, so that the pair of 41st and forty-second link rotating shafts 322-1, 322-2. Each of the 41st and 42nd link rotating shafts 322-1 and 322-2 is a cylindrical protrusion, and these are spaced apart from each other in the Z direction by the − at the second link mounting portion 32b-2. It is formed on the outer surface in the Y direction so as to extend outward in the −Y direction.

  And in order to engage with such 31st and 32nd link rotating shafts 321-1 and 321-2, at each other end of the X direction in each of the 11th and 12th link members 21b-1 and 21b-2. Are formed with circular through-openings that are slightly larger in diameter than the diameters of the columnar thirty-first and thirty-second link rotation shafts 321-1 and 321-2. The 31st link rotating shaft 321-1 is fitted into the circular through opening of the 11th link member 21b-1, and the 11th link member 21b-1 is rotatably connected to the 31st link rotating shaft 321-1. Similarly, the thirty second link rotation shaft 321-2 is fitted into the circular through opening of the twelfth link member 21b-2, and the twelfth link member 21b-2 is rotatably connected to the thirty second link rotation shaft 321-2. The

  Similarly, in order to engage with the 41st and 42nd link rotating shafts 124-1, 124-2, the other ends in the X direction of the 21st and 22nd link members 22b-1, 22b-2 are respectively Circular through-openings that are slightly larger in diameter than the diameters of the columnar forty-first and forty-second link rotating shafts 322-1 and 322-2 are formed. The forty-first link rotating shaft 322-1 is fitted into the circular through opening of the twenty-first link member 22b-1, and the twenty-first link member 22b-1 is rotatably connected to the forty-first link rotating shaft 322-1. Similarly, the forty-second link rotating shaft 322-2 is fitted into the circular through opening of the twenty-second link member 22b-2, and the twenty-second link member 22b-2 is rotatably connected to the forty-second link rotating shaft 322-2. The

  As a result, the other ends in the X direction of the eleventh and twelfth link members 21b-1 and 21b-2 are connected to the first link attachment portion 32b-1, and the twenty-first and twenty-second link members 22b-1 are connected. , 22b-2, the other end in the X direction is connected to the second link attachment portion 32b-2. Thus, the first and second parallel link members 21b and 22b are supported by the support member 3b.

  In addition, the Z-direction interval between the eleventh and twelfth link rotation shafts 123-1, 123-2, the Z-direction interval between the twenty-first and twenty-second link rotation shafts 124-1, 124-2, the thirty-first and thirty-second intervals. The Z-direction interval between the link rotation shafts 321-1 and 321-2 and the Z-direction interval between the 41st and 42nd link rotation shafts 322-1 and 322-2 are the 11th links in the parallel link member 2b, respectively. The length corresponds to the distance in the Z direction between the member 21b-1 and the twelfth link member 21b-2 (the distance in the Z direction between the 21st link member 22b-1 and the 22nd link member 22b-2).

  The first and second parallel link members 21b and 22b in the imaging apparatus Ib according to the second embodiment are linked similarly to the first and second parallel spring members 21a and 22a in the imaging apparatus Ia according to the first embodiment. When the posture changes from the reference posture due to the backlash of the rotation shafts 123, 321; 124, 322, the array lens 11 in the imaging device Ib in the second embodiment is also the same as the array lens 11 in the imaging device Ia in the first embodiment. Tilt. However, since the imaging device Ib in the second embodiment has the same effects as the imaging device Ia in the first embodiment, it is possible to generate a more accurate image.

  Next, another embodiment will be described.

(Third embodiment)
FIG. 8 is a diagram illustrating a structural configuration of the imaging apparatus according to the third embodiment. FIG. 8A is a plan view, and FIG. 8B is a side view in a reference posture, which is the posture of the array lens in a state where the imaging device Ic is placed with the optical axis and the direction of gravity aligned. FIG.

  In each of the imaging devices Ia and Ib in the first and second embodiments described above, the drive unit 4a is used as a drive unit that moves the optical components 1a and 1b in a direction along the direction of the predetermined axis. In the imaging device Ic according to the third embodiment, a drive unit 4b including a so-called voice coil motor (Voice Coil Motor, VCM) is used as the drive unit.

  Such an imaging apparatus Ic in the third embodiment includes, for example, an optical component 1c, a parallel spring member 2a, a support member 3a, a drive unit 4b, a plurality of imaging units 5, as shown in FIG. A temperature detection unit 6, a gravity direction detection unit 7a, a control processing unit 8a, and a storage unit 9 are provided. The parallel spring member 2a, the support member 3a, the plurality of imaging units 5, the temperature detection unit 6, the gravity direction detection unit 7a, the control processing unit 8a, and the storage unit 9 in the imaging device Ic of the third embodiment are each a first one. Since the parallel spring member 2a, the support member 3a, the plurality of imaging units 5, the temperature detection unit 6, the gravity direction detection unit 7a, the control processing unit 8a, and the storage unit 9 in the imaging apparatus Ia of the embodiment are the same, description thereof will be given. Omitted. Since the electrical configuration of the imaging device Ic of the third embodiment is the same as the electrical configuration of the imaging device Ia of the first embodiment, description thereof is omitted.

  The optical component 1 c is a component including the array lens 11 in order to form an optical image of an object on the light receiving surface of the image sensor 5, as with the optical component 1 a. The optical component 1c includes, for example, a rectangular array lens 11 and a lens holding frame 12c in plan view in the present embodiment, except that the lens holding frame 12c does not include the engaging protrusion 122a. Since it is the same as the optical component 1a in the imaging device Ia of the first embodiment, the description thereof is omitted.

  Similarly to the drive unit 4a, the drive unit 4b is a device for moving the array lens 11 of the optical component 1c in accordance with a control signal input from the outside along the axial direction of the predetermined axis. In this embodiment, the drive unit 4b is, for example, a VCM 4b including a magnet 41b and a coil 42b. In this embodiment, the VCM 4b includes a pair of first and second VCMs 4b-1 and 4b-2 in order to give a driving force to the optical component 1c from both sides in the Y direction of the optical component 1c. The second VCMs 4b-1 and 4b-2 are arranged so as to face each other via the optical component 1c. The first VCM 4b-1 includes a magnet 41b-1 and a coil 42b-1, and the second VCM 4b-2 includes a magnet 41b-2 and a coil 42b-2.

  In this VCM 4b (4b-1, 4b-2), the magnet 41b may be attached to the base 31 and the coil 42b may be attached to the lens holding frame 12c. However, in the present embodiment, for convenience of wiring, A magnet 41 b is attached to the lens holding frame 12 c and a coil 42 b is attached to the base 31. More specifically, in the first VCM 4b-1, the magnet 41b-1 is, for example, a rectangular plate-shaped permanent magnet, and is at a substantially central position in the X direction on the outer peripheral side surface located at one end in the Y direction. For example, it is fixed by an adhesive or the like. The coil 42b-1 is disposed at a position where the optical component 1c can be driven up and down along the Z direction by electromagnetically interacting with the magnet 41b-1 disposed in this way. More specifically, in the example shown in FIG. 8, the coil 42 b-1 is arranged so that the axial center of the coil 42 b-1 is a normal line of the magnet 41 b-1 and on one main surface of the magnet 41 b-1. For example, an adhesive or the like is fixed at a substantially central position in the X direction at one end in the Y direction on one main surface of the base 31 so as to face each other with a predetermined interval. Similarly, in the second VCM 4b-2, the magnet 41b-2 is, for example, a rectangular plate-like permanent magnet, and is, for example, an adhesive at a substantially central position in the X direction on the outer peripheral side surface located at the other end in the Y direction. It is fixed by etc. The coil 42b-2 is disposed at a position where the optical component 1c can be driven up and down along the Z direction by electromagnetically interacting with the magnet 41b-2 disposed in this way. More specifically, in the example shown in FIG. 8, the coil 42 b-2 is arranged so that the axis of the coil 42 b-2 is a normal line of the magnet 41 b-2 and on one main surface of the magnet 41 b-2. At the other end in the Y direction on one main surface of the base portion 31 so as to face each other with a predetermined interval, the base 31 is fixed to a substantially central position in the X direction with an adhesive or the like. In such a pair of first and second VCMs 4b-1 and 4b-2, each current having a direction and a current value corresponding to each control signal input from the drive unit control unit 81 of the control processing unit 8a is supplied to the coil 42b. -1 and 42b-2 flow, electromagnetic fields are generated in the coils 42b-1 and 42b-2, respectively. The electromagnetic fields generated by the coils 42b-1 and 42b-2 and the magnets 41b-1 are generated. , 41b-2, a driving force is generated by attraction or repulsion with each electromagnetic field. Since the magnets 41b-1 and 41b-2 are disposed on the lens holding frame 12c, the driving force of the first and second VCMs 4b-1 and 4b-2 is transmitted to the optical component 1c, and the optical component 1c. Is linearly guided by the parallel link mechanism of the first and second parallel spring members 21a, 22a and moves along the Z direction.

  In the imaging apparatus Ic in the third embodiment, the optical component 1c is cantilevered and elastically supported by the parallel spring member 2a, similarly to the imaging apparatus Ia in the first embodiment. For this reason, the imaging device Ic in 3rd Embodiment has an effect similar to the imaging device Ia in 1st Embodiment, and can produce | generate a more highly accurate image.

  In the first to third embodiments described above, the posture detection unit for detecting the posture of the array lens (the posture detection unit of the first mode) includes the gravity direction detection unit 7a and the posture calculation unit 84a. However, the present invention is not limited to this. For example, the posture detection units of the following second to fourth modes may be used for the imaging devices Ia to Ic in the first to third embodiments.

  FIG. 9 is a diagram for explaining the posture detection unit of the third aspect. FIG. 9A is a plan view, and FIG. 9B is a side view in a reference posture. FIG. 10 is a diagram for explaining the posture detection unit of the fourth aspect. FIG. 10A is a plan view, FIG. 10B is a side view for explaining a state where the array lens 11 is lifted along the Z direction by the drive unit 4a, and FIG. C) is a diagram showing the relationship between the position of the array lens in the Z direction and the contrast of the image for two of the plurality of eyes.

  As shown in FIG. 2, the posture detection unit according to the second mode includes an angular velocity detection unit 7 b and a posture calculation unit 84 b.

  The angular velocity detection unit 7b is a device for detecting the angular velocity of the array lens 11, and includes, for example, a three-axis gyro sensor (angular velocity sensor) that detects the angular velocity. The angular velocity detection unit 7b is connected to the control processing unit 8b, and outputs the detected angular velocity to the control processing unit 8b. Since the angular velocity detection unit 7 b detects the angular velocity of the array lens 11, the angular velocity detection unit 7 b is disposed on the array lens 11 or a member that changes its posture together with the array lens 11. In the present embodiment, the angular velocity detection unit 7b is disposed at the same position as the gravity direction detection unit 7a.

  The attitude calculation unit 84 b obtains the inclination of the array lens 11 with respect to the optical axis AX of the image sensor 5 as the attitude of the array lens 11 based on the detection result of the angular velocity detection unit 7 b. For example, for each of the three axes, a correspondence relationship between each inclination of the array lens 11 set at a predetermined interval and each integration value of each detection result of the angular velocity detection unit 7b at each inclination is obtained in advance. By storing the relationship in the storage unit 9, the posture calculation unit 84b can obtain the inclination of the array lens 11 from the integrated value of the detection result of the angular velocity detection unit 7b for each of the three axes.

  According to this configuration, the imaging devices Ia to Ic can obtain the inclination of the array lens by detecting the angular velocity, and can correct the temperature correction data.

  The imaging devices Ia to Ic are configured to detect the attitude of the array lens 11 by combining a triaxial acceleration sensor as the gravity direction detection unit 7a and a triaxial angular velocity sensor as the angular velocity detection unit 7b. It may be configured.

  As shown in FIGS. 9 and 2, the posture detection unit of the third aspect includes a position detection unit 7 c and a posture calculation unit 84 c. FIG. 9 shows the case where the attitude detection unit of the third aspect is applied to the imaging device Ia in the first embodiment, but it is applied to any of the imaging devices Ib and Ic in the second and third embodiments. May be.

  The position detection unit 7c is a device for detecting the position of the array lens 11, and includes, for example, a magnet 71c such as a permanent magnet and a Hall element 72c that detects a magnetic field using the Hall effect. The magnet 71c is disposed on the lower surface of the array lens 11 or the lens holding frame 12a, and the Hall element 72c is disposed on the main surface of the base 31 so as to face the magnet 71c in the reference posture. When the position of the array lens 11 is detected in one direction (for example, the X direction), the position detection unit 7c may be one (one set of magnet 71c and Hall element 72c), or two directions ( For example, when detecting the position of the array lens 11 in the X direction and the Y direction, two (two sets of magnets 71c and Hall elements 72c) may be used.

  The posture calculation unit 84 c obtains the position of the array lens 11 in the plane orthogonal to the optical axis AX of the image sensor 5 as the posture of the array lens 11 based on the detection result of the position detection unit 7 c. For example, the correspondence between each position of the array lens 11 set at a predetermined interval and each detection result of the position detection unit 7c at each position (that is, the output of the Hall element 72c at the position) is obtained in advance. Then, by storing this correspondence in the storage unit 9, the posture calculation unit 84c can obtain the position of the array lens 11 from the detection result of the position detection unit 7c.

  According to this configuration, the imaging devices Ia to Ic can determine the orientation of the array lens by detecting the direction of gravity, and can correct the temperature correction data more accurately.

  Moreover, the attitude | position detection part of a 4th aspect is provided with the attitude | position calculating part 84d, as shown in FIG. The posture calculation unit 84d is configured to perform array processing based on each image of each optical image of the subject formed on each imaging surface by at least two or more imaging optical systems 111 of the plurality of imaging optical systems 111 in the array lens 11. The inclination of the lens 11 is obtained as the posture of the array lens 11. More specifically, as shown in FIGS. 10A and 10B, the distance between each imaging optical system 111 and each imaging surface changes for each individual eye depending on the inclination of the array lens 11. Each in-focus position of each imaging optical system 111 is different for each. For this reason, as shown in FIG. 10C, the posture calculation unit 84d first detects each imaging optical system 111 (3 rows and 1 column in the example shown in FIG. And the in-focus positions of the two imaging optical systems 111-31 and 111-34 disposed at the respective positions in the 3 rows and 4 columns are detected. Then, the posture calculation unit 84d obtains the inclination of the array lens 11 from the difference between these in-focus positions. For example, a correspondence relationship between each focus position difference and the inclination of the array lens 11 is obtained in advance, and this correspondence relationship is stored in the storage unit 9, so that the posture calculation unit 84 d allows the difference between each focus position. Thus, the inclination of the array lens 11 can be obtained. Note that the posture calculation unit 84d follows one direction (the X direction in the example around the Y axis) when detecting the inclination of the array lens 11 caused by rotation around one axis (for example, around the Y axis). Each image of each optical image of the subject formed on each imaging surface by at least two imaging optical systems 111 may be used, and the inclination of the array lens 11 about two axes (for example, about the Y axis and the X axis). In each of the two directions (X direction and Y direction), each image of each optical image of the subject imaged on each imaging surface by at least two or more imaging optical systems 111 along the direction is detected. It's okay.

  According to this configuration, the posture detection unit detects the tilt of the array lens 11 based on the image of the optical image of the subject. There is no need for a separate sensor.

  In order to express the present invention, the present invention has been properly and fully described through the embodiments with reference to the drawings. However, those skilled in the art can easily change and / or improve the above-described embodiments. It should be recognized that this is possible. Therefore, unless the modifications or improvements implemented by those skilled in the art are at a level that departs from the scope of the claims recited in the claims, the modifications or improvements are not covered by the claims. To be construed as inclusive.

I, Ia, Ib, Ic Imaging device 5 Imaging unit 6 Temperature detection unit 7a Gravity direction detection unit 7b Angular velocity detection unit 7c Position detection unit 8a to 8d Control processing unit 9 Storage unit 11 Array lens 82 Image forming unit 83 Correction data correction unit 84a to 84d Attitude calculation unit 91 Temperature correction data storage unit 92 Correction data storage unit

Claims (9)

An array lens having a plurality of imaging optical systems;
A plurality of imaging units corresponding to the plurality of imaging optical systems in the array lens, each imaging each optical image of a subject formed on each imaging surface by each of the plurality of imaging optical systems;
A driving mechanism that supports the array lens and moves the array lens along an axial direction of a predetermined axis;
A temperature detector for detecting the temperature of the array lens;
Each optical image of the subject imaged on each imaging surface by each of the plurality of imaging optical systems in the array lens is each imaging surface by each of the plurality of imaging optical systems in the array lens at a reference temperature set as a reference. By using temperature correction data given in advance for correcting the optical images of the subject imaged on the basis of the temperature of the array lens detected by the temperature detection unit, the array An image forming unit that corrects each optical image of the subject formed on each imaging surface by each of the plurality of imaging optical systems in the lens to form each image of each optical image of the subject;
An attitude detection unit for detecting the attitude of the array lens;
An image pickup apparatus comprising: a correction data correction unit that corrects the temperature correction data used by the image forming unit based on the posture of the array lens detected by the posture detection unit. The correction data correction unit is previously configured to correct the temperature correction data used by the image forming unit so as to become temperature correction data used by the image forming unit in a reference posture set as a reference. Using the given correction data based on the attitude detected by the attitude detection unit, the temperature correction data used by the image forming unit is corrected,
The imaging apparatus according to claim 1, wherein the correction data includes distortion correction data for correcting a geometric distortion generated in an optical image due to a posture change from the reference posture. The correction data correction unit corrects the temperature correction data used by the image forming unit by changing and using the degree of application using the distortion correction data based on the posture detected by the posture detection unit. The imaging apparatus according to claim 2, wherein: The imaging apparatus according to claim 2, wherein the correction data is given in advance to at least two imaging optical systems of the plurality of imaging optical systems. The drive mechanism includes a support mechanism that supports the array lens in a cantilever manner so as to guide the array lens along the axial direction of the predetermined axis, and the array lens along the axial direction of the predetermined axis. The image pickup apparatus according to claim 1, further comprising: a drive unit that moves the camera. The temperature correction data includes distortion correction data for correcting distortion of a shape generated in an optical image due to a temperature change from the reference temperature, and a plane orthogonal to the predetermined axis due to the temperature change from the reference temperature. 6. The imaging apparatus according to claim 1, comprising at least one of positional deviation correction data for correcting a positional deviation of each of the imaging optical systems generated within the imaging optical system. 7. The posture detection unit is a gravity direction detection unit for detecting the direction of gravity acting on the array lens, and a posture for determining the posture of the array lens based on the direction of gravity detected by the gravity direction detection unit. The imaging apparatus according to claim 1, further comprising: an arithmetic unit. The posture detection unit includes an angular velocity detection unit for detecting an angular velocity of the array lens, and a posture calculation unit that obtains the inclination of the array lens as the posture of the array lens based on the angular velocity detected by the angular velocity detection unit. The imaging apparatus according to any one of claims 1 to 6, further comprising: The posture detection unit is configured to determine the tilt of the array lens based on each image of each optical image of a subject formed on each imaging surface by at least two imaging optical systems of the plurality of imaging optical systems. The imaging device according to claim 1, wherein the imaging device is detected as a posture of the array lens.