JP2007316170A - Element image group imaging apparatus and stereoscopic image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IP system element image group imaging apparatus capable of picking up an element image in a wide range, and displaying a stereoscopic image over a wide range. <P>SOLUTION: The imaging apparatus (element image group imaging apparatus) 1 is equipped with: an element image lens group 11 where a plurality of element image optical systems 111 forming an element image by forming the image of a subject are arranged on the same plane; a first direction control lens (first direction control lens system) 12 which converges either parallel beams passing through the principal point of the corresponding element image optical system 111 or beams passing through the principal point of the element image optical system 111 from a certain point on a subject side; a projection optical system 13 which is installed on the optical path of light emitted from the first direction control lens 12 and projects the element image group; an imaging device (imaging means) 14 which picks up the element image group projected by the projection optical system; and a direction changing means which moves the first direction control lens system and/or the projection optical system in a direction orthogonal to an optical axis. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for capturing an element image group for displaying a three-dimensional image or displaying a three-dimensional image, and in particular, an integral image (IP) type element image group imaging apparatus and The present invention relates to a stereoscopic image display device.

  In recent years, an IP system using a group of lenses arranged in a planar or spherical shape has been developed as one of stereoscopic television systems that can be observed from an arbitrary viewpoint. A technique for capturing a high-resolution moving image using this method is disclosed (see Patent Document 1).

  Hereinafter, the principle of the IP method will be described with reference to FIG. FIG. 23 is an explanatory diagram for explaining a conventional IP system, (a) is a schematic diagram illustrating a configuration of an IP imaging device, and (b) is a schematic diagram illustrating a configuration of an IP display device. is there. As shown in FIG. 23A, the imaging apparatus 100 includes a lens group 101 composed of a plurality of convex lenses l, l,... Arranged in an array on the same plane, and the lens group 101 as viewed from the subject s side. The imaging unit 102 is installed behind the camera, and the subject s installed in front of the lens group 101 is photographed. In this imaging unit 102, images i, i,... Of the subject s are formed by the convex lenses l, l,. Each image i, i,... Of the subject s photographed here is called an element image.

Next, as shown in FIG. 23B, the display device 105 includes a lens group 106 (convex lenses l ′, l ′,...) That is the same as the lens group 101 of the imaging device 100 [FIG. When the image captured by the image capturing apparatus 100 is displayed on the display unit 107, the display unit 107 is disposed behind the group 106 at the same position as the image capturing unit 102. From the observer o in front of the lens group 106, A stereoscopic reproduction image s ′ of the subject s can be observed.
JP 2001-320735 A (paragraph numbers 0014 to 0024)

  However, if element images are acquired in a state where there is an overlap between adjacent element images, they are not correctly separated at the time of display. Therefore, as shown in FIGS. Limited to width w. Therefore, the range for imaging through the convex lens l and the range (viewing zone) for displaying through the convex lens l ′ are limited to the angle θ. For this reason, it is impossible to capture a subject outside the range of the angle θ and display a stereoscopic image, and when an observer observes from outside the range of the angle θ, the displayed stereoscopic image has a geometrical shape. There was a problem that distortion occurred or reverse vision occurred.

  The present invention has been made to solve the above-described problems of the prior art, and can capture a wide range of element images and can display a 3D image over a wide range. An object is to provide a device and a stereoscopic image display device.

  In order to solve the above problem, the element image group imaging apparatus according to claim 1 is configured of a plurality of element images, and element image group imaging that images an element image group that is an image for displaying a stereoscopic image of a subject. An element image optical system in which a plurality of element image optical systems that form an image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system. An array and an optical axis parallel to the optical axis of the elemental image optical system, and parallel light passing through the principal point of the elemental image optical system, or a principal point of the elemental image optical system from a certain point on the subject side On the optical path of the light emitted from the first direction control lens system, the first direction control lens system for converging any of the light passing through the optical axis, and an optical axis parallel to the optical axis of the element image optical system A projection optical system that projects the elemental image group, Imaging means for capturing an element image group projected by the projection optical system; and direction changing means for moving the first direction control lens system and / or the projection optical system in a direction perpendicular to the optical axis. I decided to prepare.

  According to such a configuration, the element image group imaging device generates an element image group of a subject by the element image optical system array, projects the element image group to the imaging unit by the projection optical system, and uses the image sensor. The element image group is imaged. Here, each elemental image optical system forms an image of a subject in various directions as viewed from the principal point of the elemental image optical system. Between the elemental image optical system array and the projection optical system, By providing the first direction control lens system, it is possible to control the imaging direction of the element image captured by the imaging unit. That is, the first direction control lens system converges either parallel light passing through the principal point of the element image optical system or light passing through the principal point of the element image optical system from a certain point on the subject side. Then, the light is converged again via the position where the light is converged by the first direction control lens system or another optical system provided between the first direction control lens system and the projection optical system. By setting the principal point of the projection optical system at a certain position, the projection optical system can project an element image group composed of element images centered on this light onto the imaging means.

  Then, the element image group imaging device moves one or both of the first direction control lens system and the projection optical system in a direction orthogonal to the optical axis by the direction changing unit, and images by the imaging unit, A group of element images centered in a plurality of directions can be captured.

  The element image group imaging device according to claim 2 is an element image group imaging device configured to image an element image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of element images. An element image optical system array in which a plurality of element image optical systems that form the image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system; Either parallel light that has an optical axis parallel to the optical axis of the image optical system and passes through the principal point of the element image optical system, or light that passes through the principal point of the element image optical system from a certain point on the subject side A first direction control lens system that converges the light, and an optical axis parallel to the optical axis of the elemental image optical system, and is installed on the optical path of the light emitted from the first direction control lens system, A plurality of projection optical systems for projecting element image groups, and the projection optics Of each corresponding, it was decided to include a plurality of imaging means for imaging the element images projected by the projection optical system its corresponding.

  According to this configuration, the element image group imaging device generates an element image group of the subject by the element image optical system array. Then, the element image group imaging device projects an element image group composed of element images in the photographing direction determined by the arrangement of the first direction control lens system and the projection optical system onto the imaging unit by the projection optical system. To do. Here, since the elemental image group imaging device has a plurality of projection optical systems, a plurality of elemental image groups composed of elemental images centered in directions corresponding to the respective projection optical systems are converted into a plurality of elemental image groups. Imaging can be performed by the imaging element.

  Furthermore, the elemental image group imaging device according to claim 3 is an elemental image group imaging device configured to image an elemental image group that is an image for displaying a stereoscopic image of a subject, which includes a plurality of elemental images. An element image optical system array in which a plurality of element image optical systems that form the image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system; Either parallel light that has an optical axis parallel to the optical axis of the image optical system and passes through the principal point of the element image optical system, or light that passes through the principal point of the element image optical system from a certain point on the subject side A first direction control lens system that converges the light, and light that has a plurality of openings at positions where the light from the element image group emitted from the first direction control lens system converges, and passes through the openings. Light shielding means for shielding light other than the element image light A plurality of projection optical systems having an optical axis parallel to the optical axis of the system, installed on the optical path of the light that has passed through each of the openings, and projecting the element image group, and projected by each of the projection optical systems And a plurality of imaging means for imaging the grouped elemental images.

  According to such a configuration, the elemental image group imaging device generates an elemental image group of the subject by the elemental image optical system array, and the light of the elemental image group that has passed through the aperture is projected to the imaging unit by the projection optical system. Projecting is performed, and the element image group is captured by the image sensor. Here, each elemental image optical system forms an image of a subject in various directions as viewed from the principal point of the elemental image optical system. Between the elemental image optical system array and the projection optical system, By providing the first direction control lens system and the light shielding means having a plurality of apertures, it is possible to control the imaging direction of the element image captured by the imaging means. That is, the first direction control lens system converges either parallel light passing through the principal point of the element image optical system or light passing through the principal point of the element image optical system from a certain point on the subject side. Then, by setting the center of the aperture at the position where the light is converged by the first direction control lens system or the position where the light is converged again through another optical system, the projection optical system It is possible to project an element image group composed of element images centered on the image pickup means.

  Since the element image group imaging device has a plurality of apertures, the element image group imaging device includes a plurality of element images that are centered on an imaging direction determined by the arrangement of the first direction control lens system and each aperture. The element image group can be imaged by a plurality of image sensors.

  An elemental image group imaging device according to a fourth aspect is the elemental image group imaging device according to the third aspect, wherein the light shielding means is provided inside and parallel to the first direction control lens system. A second direction control lens system having an optical axis and converting light passing through a principal point of the first direction control lens system into light parallel to the optical axis; the second direction control lens system; Between the projection optical systems, a plurality of light beams installed on the optical axis of the projection optical system corresponding to the projection optical system and transmitting light emitted from the second direction control lens system to the projection optical system. And a field lens system.

  According to this configuration, the elemental image group imaging apparatus converts the light from the elemental image group that has passed through each opening into a direction that faces the plane orthogonal to the optical axis by the second direction control lens system. Then, it is transmitted to the projection optical system by each field lens system. Then, the element image group imaging apparatus projects light from the element image group onto the imaging unit by the projection optical system, and images the element image group by the imaging unit. Thereby, the elemental image groups in different shooting directions can be directly captured by each of the imaging units installed facing the optical axis.

  The element image group imaging device according to claim 5 is an element image group imaging device configured to image an element image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of element images. An element image optical system array in which a plurality of element image optical systems that form the image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system; Either parallel light that has an optical axis parallel to the optical axis of the image optical system and passes through the principal point of the element image optical system, or light that passes through the principal point of the element image optical system from a certain point on the subject side A first direction control lens system that converges the light, and a plurality of openings that can be opened and closed at a position where the light from the element image group emitted from the first direction control lens system converges. Light shielding means for shielding light other than light passing therethrough, and A projection optical system having an optical axis parallel to the optical axis of the elementary image optical system, installed on the optical path of the light passing through the first direction adjusting lens system, and projecting the element image group; An image pickup unit that picks up an element image group that passes through and is projected by the projection optical system is provided.

  According to this configuration, the element image group imaging device generates an element image group of the subject by the element image optical system array. The element image group imaging apparatus includes a light shielding unit having a plurality of openable and closable openings, and is configured by an element image in a shooting direction determined by the arrangement of the first direction control lens system and the open opening. An image group is imaged by an imaging means. Thereby, the element image group imaging device switches a plurality of opening and closing of the openings, opens each of the openings one by one, and captures a plurality of element images centered in a direction corresponding to each opening. A group of element images can be captured.

  The element image group imaging device according to claim 6 is an element image group imaging device configured to image an element image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of element images. An element image optical system array in which a plurality of element image optical systems that form the image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system, the element image Either parallel light that has an optical axis parallel to the optical axis of the optical system and passes through the principal point of the elemental image optical system, or light that passes through the principal point of the elemental image optical system from a certain point on the subject side A first direction control lens system for converging, and an optical axis parallel to the optical axis of the elemental image optical system, installed on the optical path of the light emitted from the first direction control lens system, and the elemental image A projection optical system for projecting a group, and the projection optical system A plurality of imaging systems having an imaging means for capturing an the element images projected Te, the light from the object it was decided and a light distribution means for distributing the imaging system.

  According to such a configuration, the elemental image group imaging device distributes light from the subject by the light distribution unit, and projects the first direction control lens system and the projection by each of the plurality of imaging systems into which the distributed light is incident. An element image group composed of element images in the photographing direction determined by the arrangement with the optical system is imaged. Thereby, the elemental image group imaging device can capture the elemental image groups in a plurality of imaging directions by the plurality of imaging systems.

  Furthermore, the element image group imaging device according to claim 7 is the element image group imaging device according to claim 6, wherein at least one of the imaging systems passes through a principal point of each element image optical system. Includes a light-shielding means provided on a plane orthogonal to the optical axis, which has an opening at a position where the light is condensed and shields light other than light passing through the opening, and the projection optical system includes the opening The light that has passed through the center of the projection optical system is converted into light parallel to the optical axis of the projection optical system.

  According to such a configuration, the element image group imaging device includes an element image group in which at least one of the plurality of imaging systems includes element images in the shooting direction determined by the arrangement of the first direction control lens system and the aperture. Take an image. Thereby, the elemental image group imaging device can capture the elemental image groups in a plurality of imaging directions by the plurality of imaging systems.

  The stereoscopic image display apparatus according to claim 8, wherein the stereoscopic image display device includes a plurality of element images, and displays a stereoscopic image by inputting an element image group which is an image for displaying a stereoscopic image of a subject. A display unit that displays the element image group, a projection optical system that projects the element image group displayed by the display unit, and an optical axis that is parallel to the optical axis of the projection optical system, A first direction control lens system for condensing light that has passed through the principal point of the projection optical system, or parallel light; and an optical path of light emitted from the first direction control lens system; An element image optical system that corresponds to each of the element images formed by the projection optical system, emits light from the corresponding element image, and reproduces a stereoscopic image of the subject. On the same plane perpendicular to the optical axis of the system. And an element image optical system array in which, the first directional control lens system and / or the projection optical system, it was decided and a direction changing means for moving in a direction perpendicular to the optical axis.

  According to such a configuration, the stereoscopic image display device projects the element image group displayed on the display unit by the projection optical system, and reproduces the stereoscopic image indicated by the element image group by the element image optical system array. Here, light is emitted from the display means in various directions. By providing a first direction control lens system between the element image optical system array and the projection optical system, the element image optical system is provided. The display direction of the stereoscopic image displayed by the array can be controlled. That is, the first direction control lens system condenses the light passing through the principal point of the projection optical system at a certain point on the viewer side or converts it into parallel light passing through the principal point of the elemental image optical system. For this reason, the display device is in the range of the viewing zone centered on the focused observer side point or the direction (display direction) within the viewing zone centered on the direction of the parallel light. A stereoscopic image can be displayed.

  Here, the point on the observer side refers to the principal point of the projection optical system or the light passing through the principal point of the projection optical system with respect to the first direction control lens system. And a point having a conjugate relationship with a point converged again by another optical system provided between the projection optical systems. Further, the direction of the parallel light is changed again by the principal point of the projection optical system or by another optical system in which the light passing through the principal point of the projection optical system is provided between the first direction control lens system and the projection optical system. This is the direction of a straight line passing through the converged point and the principal point of the first direction control lens system. Then, the stereoscopic image display device moves one or both of the first direction control lens system and the projection optical system in a direction perpendicular to the optical axis by the direction changing unit, and thereby uses the first direction control lens system. The position of the point on the observer side where the light passing through the principal point of the projection optical system is collected or the direction of the parallel light passing through the principal point of the element image optical system to be converted changes. Thereby, the stereoscopic image display device can display a stereoscopic image in a plurality of directions.

  Furthermore, the stereoscopic image display device according to claim 9 is a stereoscopic image display configured to display a stereoscopic image by inputting an element image group which is an image for displaying a stereoscopic image of a subject, which is composed of a plurality of element images. A plurality of display means for displaying the element image group, and a plurality of projection optical systems corresponding to each of the display means and projecting the element image group displayed by the corresponding display means; A first direction control lens system having an optical axis parallel to the optical axis of the projection optical system and condensing light passing through the principal point of each of the projection optical systems, or making it parallel light; It is installed on the optical path of the light emitted from the first direction control lens system, corresponds to each element image formed by each projection optical system, and emits light from the corresponding element image. Element image for reproducing a stereoscopic image of the subject The academic system, it was decided and a component image optical system array in which a plurality of arranged on the same plane orthogonal to the optical axis of the element image optical system.

  According to such a configuration, the stereoscopic image display device reproduces a stereoscopic image indicated by each element image group displayed on the plurality of display means by the element image optical system array. Here, since the stereoscopic image display apparatus has a plurality of projection optical systems, a stereoscopic image is displayed with respect to a plurality of display directions determined by the arrangement of the first direction control lens system and each projection optical system. Can be displayed.

  The stereoscopic image display apparatus according to claim 10, wherein the stereoscopic image display device includes a plurality of element images, and inputs a component image group that is an image for displaying a stereoscopic image of a subject to display the stereoscopic image. A plurality of display means for displaying the element image group, a plurality of projection optical systems for projecting the element image group displayed by the display means, and light from each of the projection optical systems. A plurality of apertures at a converged position; a light-shielding unit that shields light other than light passing through the aperture; an optical axis parallel to the optical axis of the projection optical system; and passing through the center of the aperture. A first direction control lens system for condensing or collimating the emitted light and an optical path of the light emitted from the first direction control lens system, and imaged by the projection optical system Corresponding to each of the element images and the corresponding An element image optical system array in which a plurality of element image optical systems that emit light from an elementary image and reproduce a stereoscopic image of the subject are arranged on the same plane orthogonal to the optical axis of the element image optical system; It was decided to prepare.

  According to such a configuration, the stereoscopic image display device projects the element image group displayed on the display unit by the projection optical system, and reproduces the stereoscopic image indicated by the element image group by the element image optical system array. Here, light is emitted from the display means in various directions. The first direction control lens system and the light shielding means having a plurality of openings are provided between the element image optical system array and the projection optical system. The display direction of the stereoscopic image displayed by the element image optical system array can be controlled. That is, the first direction control lens system condenses the light passing through the center of the aperture at a certain point on the viewer side or converts it into parallel light passing through the principal point of the elemental image optical system. Therefore, the display device displays a three-dimensional image in the range of the viewing zone centered on the focused observer side point or in the direction of the viewing zone centered on the direction of the parallel light. can do.

  Here, the point on the observer side refers to the center of the aperture or the light passing through the center of the aperture between the first direction control lens system and the light shielding means with respect to the first direction control lens system. The point is in a conjugate relationship with the point converged again by another optical system provided. The direction of the parallel light is such that the center of the aperture or the light passing through the center of the aperture is converged again by another optical system provided between the first direction control lens system and the light shielding means, and The direction of a straight line passing through the principal point of the direction control lens system 1. Since the stereoscopic image display apparatus has a plurality of apertures, it can display a stereoscopic image in a plurality of display directions determined by the arrangement of the first direction control lens system and each aperture. .

  The stereoscopic image display apparatus according to claim 11 is a stereoscopic image display configured to display a stereoscopic image by inputting an element image group which is an image for displaying a stereoscopic image of a subject, which includes a plurality of element images. An apparatus comprising: a display unit that displays the element image group; a projection optical system that projects the element image group displayed by the display unit; and a plurality of openings that can be opened and closed on an optical path of light from the display unit A light shielding means for shielding light other than the light passing through the aperture, and an optical axis parallel to the optical axis of the projection optical system, and the light parallel to the optical axis is converged by the projection optical system A first direction control lens system having a principal point at a position where the light passes through the center of the opening or converging light, and light emitted from the first direction control lens system Installed on the optical path of the An element image optical system that emits light from the corresponding element image and reproduces the stereoscopic image of the subject with respect to the optical axis of the element image optical system. And a plurality of elemental image optical system arrays arranged on the same orthogonal plane.

  According to such a configuration, the stereoscopic image display apparatus reproduces a stereoscopic image indicated by the element image group displayed on the display unit by the element image optical system array. Here, the stereoscopic image display device includes a light shielding unit having a plurality of openable and closable openings, and switches between opening and closing of the openings to display each opening one by one, thereby displaying the first direction control lens system. A stereoscopic image can be displayed in a plurality of display directions determined by the arrangement with the open opening.

  The stereoscopic image display device according to claim 12 is a stereoscopic image display configured to display a stereoscopic image by inputting an element image group which is an image for displaying a stereoscopic image of a subject, which includes a plurality of element images. A display means for displaying the element image group, a projection optical system for projecting the element image group displayed by the display means, an optical axis parallel to the optical axis of the projection optical system, and the projection A first direction control lens system for condensing light that has passed through the principal point of the optical system, or parallel light; and an optical path of light emitted from the first direction control lens system; An element image optical system that corresponds to each of the element images formed by the projection optical system, emits light from the corresponding element image, and reproduces a stereoscopic image of the subject. On the same plane perpendicular to the optical axis It was decided to include a plurality of display systems having elements picture optical system arrays number sequence, and a light integrating means for integrating the light from the plurality of the display system.

  According to such a configuration, the stereoscopic image display device displays a stereoscopic image in a direction determined by the arrangement of the first direction control lens system and the projection optical system by each of the plurality of display systems. Then, light emitted from the display system is integrated by the light integrating means and emitted to the observer. Accordingly, the stereoscopic image display apparatus can display a stereoscopic image in a plurality of display directions by a plurality of display systems.

  Furthermore, the stereoscopic image display apparatus according to claim 13 is a stereoscopic image display configured to display a stereoscopic image by inputting an elemental image group that is an image for displaying a stereoscopic image of a subject, which includes a plurality of elemental images. A plurality of point light sources each capable of being turned on and off, a first direction control lens system for condensing light emitted from the point light sources or making it parallel light; and A display unit that is installed on the optical path of the light emitted from the first direction control lens system, displays the element image group, and is installed on the optical path of the light emitted from the display unit, and is displayed on the display unit. The element image optical system that corresponds to each element image and emits light from the corresponding element image to reproduce the stereoscopic image of the subject is orthogonal to the optical axis of the element image optical system. Multiple elemental image optical systems arranged on the same plane It was decided and a ray.

  According to this configuration, the stereoscopic image display device reproduces a stereoscopic image indicated by the element image group displayed on the display unit. Here, by providing the point light source and the first direction control lens system, the display direction of the stereoscopic image displayed by the elemental image optical system array can be controlled. That is, the first direction control lens system condenses the light from the point light source at a certain point on the viewer side or converts it into parallel light passing through the principal point of the elemental image optical system. Therefore, the display device displays a three-dimensional image in the range of the viewing zone centered on the focused observer side point or in the direction of the viewing zone centered on the direction of the parallel light. can do. Here, the point on the observer side is a point conjugate to the position of the point light source with respect to the first direction control lens system. The direction of the parallel light is a direction of a straight line passing through the position of the point light source and the principal point of the first direction control lens system.

  The stereoscopic image display device has a plurality of point light sources that can be controlled to be turned on and off, and switches the point light sources on and off to light each point light source one by one. A stereoscopic image can be displayed in a plurality of display directions determined by the arrangement of the first direction control lens system and the point light source that is lit.

  The stereoscopic image display device according to claim 14 includes a plurality of element images, and a stereoscopic image display that displays the stereoscopic image by inputting an element image group that is an image for displaying a stereoscopic image of a subject. An apparatus comprising: a point light source; a first direction control lens system that condenses or collimates light emitted from the point light source; and light emitted from the first direction control lens system. Display means for displaying the element image group installed on the optical path, and corresponding to each element image installed on the optical path of the light emitted from the display means and displayed on the display means, the corresponding An element image optical system array in which a plurality of element image optical systems that emit light from an element image and reproduce a stereoscopic image of the subject are arranged on the same plane orthogonal to the optical axis of the element image optical system; , The first direction control lens system and / Or the point light source, it was decided and a direction changing means for moving in a direction perpendicular to the optical axis of the first directional control lens system.

  According to this configuration, the stereoscopic image display device reproduces a stereoscopic image indicated by the element image group displayed on the display unit. Here, by providing the point light source and the first direction control lens system, the display direction of the stereoscopic image displayed by the elemental image optical system array can be controlled. That is, the first direction control lens system condenses the light from the point light source at a certain point on the viewer side or converts it into parallel light passing through the principal point of the elemental image optical system. Therefore, the display device displays a three-dimensional image in the range of the viewing zone centered on the focused observer side point or in the direction of the viewing zone centered on the direction of the parallel light. can do. Here, the point on the observer side is a point conjugate to the position of the point light source with respect to the first direction control lens system. The direction of the parallel light is a direction of a straight line passing through the position of the point light source and the principal point of the first direction control lens system.

  Then, the stereoscopic image display device moves the one or both of the first direction control lens system and the point light source in a direction orthogonal to the optical axis by the direction changing unit, thereby generating a stereoscopic image with respect to a plurality of display directions. Can be displayed.

  The stereoscopic image display device according to the present invention has the following excellent effects. According to the first and fifth aspects of the present invention, an element image group in a predetermined angle range in a certain direction can be captured at a certain time, and an element image in a predetermined angle range in a different direction can be captured at another time. The group can be imaged. Therefore, it is possible to capture a wider range of element images than when capturing element images in only one direction.

  According to the second, third, sixth, and seventh aspects of the present invention, it is possible to simultaneously capture an element image group in a predetermined angle range in a plurality of directions. Therefore, it is possible to capture a wider range of element images than when capturing element images in only one direction. According to the fourth aspect of the present invention, it is possible to pick up an image of a group of element images in a predetermined angle range in a plurality of directions.

  According to the invention of claim 8, claim 11, claim 13 and claim 14, a stereoscopic image can be displayed for a predetermined angle range in a certain direction at a certain time, and is different at another time. A stereoscopic image can be displayed for a predetermined angular range of directions. Therefore, it is possible to display a wide range of information on a stereoscopic image of a subject over a wide range, compared to a case where a stereoscopic image is displayed in only one direction. According to the ninth, tenth, and twelfth aspects of the present invention, a stereoscopic image can be displayed for a predetermined angle range in a plurality of directions at the same time. Therefore, it is possible to display a wide range of information on a stereoscopic image of a subject over a wide range, compared to a case where a stereoscopic image is displayed in only one direction.

Embodiments of the present invention will be described below with reference to the drawings.
[Configuration of Imaging Device (First Embodiment)]
First, with reference to FIG. 1, the structure of the imaging device 1 which is 1st Embodiment of this invention is demonstrated. FIG. 1 is a schematic diagram illustrating a configuration of an imaging apparatus according to a first embodiment of the present invention, (a) is a schematic diagram illustrating a configuration of the imaging apparatus, and (b) is an imaging in another direction. It is the schematic diagram which showed the structure of the imaging device when doing. Here, the optical paths of the parallel light passing through the principal points of the elemental image optical system 111 at both ends and the light passing through the principal point of the central elemental image optical system 111 are schematically illustrated. In addition, here, directions D1 and D2 (directions opposite to the traveling direction of light) in which the imaging device 1 captures images are illustrated by arrows.

  The imaging device (element image group imaging device) 1 captures an element image group from a plurality of directions. The imaging apparatus 1 includes an elemental image optical system array 11, a first direction control lens 12, a projection optical system 13, and an imaging element 14.

  The element image optical system array 11 generates an element image group of a subject (not shown). The element image optical system array 11 is composed of a plurality of element image optical systems 111, 111,... Arranged in an array on the same plane orthogonal to the optical axis.

  The element image optical system 111 is configured to generate an element image by forming an image of a subject when light from the subject enters. Here, the elemental image optical system 111 is composed of a convex lens. The light emitted from the elemental image optical system 111 enters the first direction control lens 12. Then, the element image optical system 111 generates an element image on the first direction control lens 12.

  The first direction control lens (first direction control lens system) 12 controls a direction in which an element image is captured by an image sensor 14 described later. Here, the first direction control lens 12 is composed of a convex lens, and the projection optical system 13 described later is installed at a position away from the first direction control lens 12 by the focal length of the first direction control lens 12. . The first direction control lens 12 is moved by a predetermined width in a direction orthogonal to the optical axis of the first direction control lens 12 by a first direction control lens moving unit (direction changing unit) (not shown).

  Here, as shown in FIG. 1A, the principal point of the projection optical system 13, the principal point of the first direction control lens 12, and the element image optical system 111 at the center of the element image optical system array 11 to be described later. It is assumed that the principal points are arranged on a straight line. The projection optical system 13 is installed at a position away from the first direction control lens 12 by the focal length of the first direction control lens 12. Therefore, the principal of each elemental image optical system 111 that is incident in the direction of the straight line passing through the principal point of the first direction control lens 12 and the principal point of the projection optical system 13 [opposite direction of the direction D1 (optical axis direction)]. Parallel light passing through the point converges to the principal point of the projection optical system 13. Therefore, an element image centered in the direction D1 is projected onto an image sensor 14 to be described later by the projection optical system 13, and the direction in which the element image optical system 111 of each element image optical system array 11 is photographed is defined as a light beam. It can be set in the axial direction (direction D1).

  Here, the first direction control lens moving means (not shown) moves the first direction control lens 12 in a direction orthogonal to the optical axis, and as shown in FIG. The principal point of the one-direction control lens 12 and the principal point of the element image optical system 111 on the left side of the element image optical system 111 at the center of the element image optical system array 11 are arranged on a straight line. Then, the light passing through the principal point of each element image optical system 111 incident in the direction of the straight line passing through the principal point of the first direction control lens 12 and the principal point of the projection optical system 13 (direction D2 reverse direction) It converges to the principal point of the projection optical system 13. As a result, the direction in which the element image is taken by each element image optical system 111 of the element image optical system array 11 is a direction D2 of a straight line passing through the principal point of the first direction control lens 12 and the principal point of the projection optical system 13. Can be set to The first direction control lens moving means is constituted by an optical stage attached to a drive source such as a servo motor or a piezoelectric element, and is realized by fixing the first direction control lens 12 to the optical stage. be able to. However, the drive source of the optical stage is not limited to this.

  As described above, the imaging device 1 moves the first direction control lens 12 in a direction orthogonal to the optical axis by a first direction control lens moving unit (not shown), so that the image pickup device 14 uses the two different directions D1 and D2. Can be captured. As a result, the conventional IP imaging device can only capture a group of element images in a predetermined angle range in only one direction. According to the imaging device 1, an element in a predetermined angle range in a certain direction at a certain time. An image group can be captured, and an element image group in a predetermined angle range in a different direction can be captured at another time. Therefore, the imaging device 1 can capture a wide range of element images.

  The projection optical system 13 projects the element image group formed on the first direction control lens 12 by the element image optical system array 11 onto the image sensor 14. Here, the projection optical system 13 is composed of a convex lens.

  The imaging element (imaging means) 14 captures an element image group generated by the element image optical system array 11 and projected by the projection optical system 13.

[Operation of Imaging Device (First Embodiment)]
Next, with reference to FIG. 1, an operation in which the imaging apparatus 1 according to the present invention captures an element image group will be described. First, light from the subject enters the plurality of element image optical systems 111, 111,... Of the element image optical system array 11. Subsequently, the light emitted from the element image optical system array 11 enters the first direction control lens 12 and forms an element image on the first direction control lens 12. Here, as shown in FIG. 1A, the principal point of the projection optical system 13, the principal point of the first direction control lens 12, and the principal point of the element image optical system 111 in the center of the element image optical system array 11. Are arranged on a straight line, the light parallel to the optical axis incident on the elemental image optical systems 111, 111,... Is condensed by the first direction control lens 12 on the principal point of the projection optical system 13. . Then, the element image centered on the optical axis direction (direction D1) is projected onto the image sensor 14 by the projection optical system 13, and the image element 14 captures an element image group including the element images.

  Subsequently, the first direction control lens 12 is moved in a direction orthogonal to the optical axis by a first direction control lens moving means (not shown), and as shown in FIG. The principal point of the one-direction control lens 12 and the principal point of the element image optical system 111 on the left side of the element image optical system 111 at the center of the element image optical system array 11 are arranged on a straight line. Then, light from the subject enters the plurality of element image optical systems 111, 111,... Of the element image optical system array 11, enters the first direction control lens 12, and the element is on the first direction control lens 12. Form an image. Here, light passing through the principal point of each elemental image optical system 111 and incident in the direction of a straight line passing through the principal point of the first direction control lens 12 and the principal point of the projection optical system 13 Converge to the principal point. An element image centered in the direction D2 passing through the principal point of the first direction control lens 12 and the principal point of the projection optical system 13 is projected onto the image sensor 14 by the projection optical system 13, and this element is reflected by the image sensor 14. An element image group consisting of images is captured.

  Further, the first direction control lens moving unit again moves the first direction control lens 12 in the direction orthogonal to the optical axis, and the element image is picked up by the image sensor 14 repeatedly. Accordingly, the imaging apparatus 1 can capture the element image groups in two different directions D1 and D2 by the imaging element 14. Note that the first direction lens moving unit may move the first direction control lens, for example, every time an element image group of one frame is imaged by the imaging element.

  Although FIG. 1 shows the case where the imaging apparatus 1 includes nine element image optical systems 111, the number of element image optical systems 111 included in the element image optical system array 11 is not limited to this. The element image optical systems 111 may be arranged only in the horizontal direction, for example, or may be arranged two-dimensionally in the horizontal direction and the vertical direction.

  The first direction control lens 12 of the imaging device 1 may be moved to three or more different positions by a first direction control lens moving unit (not shown). As a result, a group of element images in a predetermined angle range in three or more directions can be captured, and a wide range of element images can be captured.

  Further, here, the first direction control lens moving means (not shown) includes the first direction control lens 12, the principal point of the projection optical system 13, the principal point of the first direction control lens 12, and the element image optical system array 11. , The principal point of the central element image optical system 111, the principal point of the projection optical system 13, the principal point of the first direction control lens 12, and the central element of the element image optical system array 11. It was decided to move between the position where the principal point of the elemental image optical system 111 adjacent to the left of the image optical system 111 is in a straight line. However, the first direction control lens 12 is moved by the first direction control lens moving means to a position where the direction of the straight line passing through the principal point of the projection optical system 13 and the principal point of the first direction control lens 12 does not match. It only has to be done.

  As shown in FIG. 2A, the first direction control lens (first direction control lens system) 12 ′ of the imaging device 1 ′ is moved from the projection optical system 13 to the optical axis direction in the first direction control lens. It is good also as installing in the position away from the focal distance of 12 '. FIG. 2 is a schematic diagram showing a configuration of a modification of the imaging apparatus according to the first embodiment of the present invention, (a) is a schematic diagram showing the configuration of the imaging apparatus, and (b) is another It is the schematic diagram which showed the structure of the imaging device when imaging centering on a point.

  At this time, the element images generated by the element image optical systems 111 are formed on the first direction control lens 12 ′ of the imaging device 1 ′. Then, the imaging device 1 ′ is within a range of a predetermined width W 1 centered on a point P 1 that is conjugate to the principal point of the projection optical system 13 with respect to the first direction control lens 12 ′ by the imaging device 14. An element image group including corresponding element images is captured. 2B, the first direction control lens 12 ′ of the imaging device 1 ′ is moved by a predetermined width in a direction perpendicular to the optical axis by a first direction control lens moving unit (not shown). To do. At this time, the imaging device 1 ′ has a predetermined width W 2 centered on a point P 2 that is conjugate to the principal point of the projection optical system 13 with respect to the first direction control lens 12 ′ by the imaging device 14. The element image group which consists of the element image corresponding to is imaged.

  As described above, the imaging device 1 ′ captures the element image groups of the subjects in different ranges in the real space by moving the first direction control lens 12 ′ in the direction orthogonal to the optical axis. Can do.

[Configuration of Imaging Device (Second Embodiment)]
Next, with reference to FIG. 3, the configuration of an imaging apparatus 1A according to the second embodiment of the present invention will be described. FIG. 3 is a schematic diagram illustrating the configuration of the imaging apparatus according to the second embodiment of the present invention, (a) is a schematic diagram illustrating the configuration of the imaging apparatus, and (b) is imaging in another direction. It is the schematic diagram which showed the structure of the imaging device when doing. Here, the optical path of parallel light passing through the principal point of the elemental image optical system 111 is schematically shown. As shown in FIG. 3, the imaging device 1 </ b> A captures an element image group of a subject (not shown).

  An imaging apparatus (element image group imaging apparatus) 1A includes a projection optical system 13A instead of the projection optical system 13 of the imaging apparatus 1 (see FIG. 1), and an imaging element 14A instead of the imaging element 14. Furthermore, the imaging apparatus 1A includes a projection optical system moving unit and an imaging element moving unit (not shown). Since the configuration other than the projection optical system 13A and the imaging element 14A in the imaging apparatus 1A is the same as that shown in FIG. 1, the same reference numerals are given and the description thereof is omitted.

  The projection optical system 13A projects the element image group formed by the element image optical system array 11 onto the image sensor 14A. The projection optical system 13A is projected by a predetermined width in a direction orthogonal to the optical axis of the projection optical system 13A according to the position of the first direction control lens 12 by a projection optical system moving unit (direction changing unit) (not shown). Moving.

  The image sensor 14A captures an element image group generated by the element image optical system array 11 and projected by the projection optical system 13A. Then, the image sensor 14A is moved by a predetermined width in a direction perpendicular to the optical axis of the projection optical system 13A according to the position of the first direction control lens 12 by an image sensor moving means (not shown).

  Here, as shown in FIG. 3A, the center of the light receiving surface (not shown) of the image sensor 14A, the principal point of the projection optical system 13A, the principal point of the first direction control lens 12, and the element image It is assumed that the principal point of the elemental image optical system 111 at the center of the optical system array 11 is arranged on a straight line. The projection optical system 13A is installed at a position away from the first direction control lens 12 by the focal length of the first direction control lens 12. Therefore, the principal of each element image optical system 111 that is incident in the direction of the straight line passing through the principal point of the first direction control lens 12 and the principal point of the projection optical system 13A [opposite direction of the direction D1 (optical axis direction)]. Parallel light passing through the point converges to the principal point of the projection optical system 13A. Therefore, the element image centered in the direction D1 is projected onto the image sensor 14A by the projection optical system 13A, and the direction in which the element image is captured can be set to the optical axis direction (direction D1).

  Here, the first direction control lens 12 is moved in a direction orthogonal to the optical axis by a first direction control lens moving means (not shown), the projection optical system 13A is moved by the projection optical system moving means, and the imaging element is moved by the image pickup element moving means. 14A is moved in a direction perpendicular to the optical axis, and as shown in FIG. 3B, the center of the light receiving surface of the image sensor 14A, the principal point of the projection optical system 13A, and the principal point of the first direction control lens 12 And the principal point of the elemental image optical system 111 at the center of the elemental image optical system array 11 are arranged on a straight line. Then, the light passing through the principal point of each element image optical system 111 incident in the direction of the straight line passing through the principal point of the first direction control lens 12 and the principal point of the projection optical system 13A (direction D2 reverse direction) It converges to the principal point of the projection optical system 13A. As a result, the direction in which the element image is taken by each element image optical system 111 of the element image optical system array 11 is a direction D2 of a straight line passing through the principal point of the first direction control lens 12 and the principal point of the projection optical system 13A. Can be set to The projection optical system moving means and the image sensor moving means are constituted by an optical stage attached to a driving source such as a servomotor or a piezoelectric element, for example, as in the first direction control lens moving means. This can be realized by fixing the projection optical system 13A or the image sensor 14A. However, the drive source of the optical stage is not limited to this.

  As described above, the imaging apparatus 1A moves the first direction control lens 12 by a first direction control lens moving unit (not shown) and the projection optical system 13A by a projection optical system moving unit in a direction orthogonal to the optical axis. The image sensor 14A can capture elemental image groups in two different directions D1 and D2. Accordingly, the imaging apparatus 1A can capture an element image group in a predetermined angle range in a certain direction at a certain time, and can capture an element image group in a predetermined angle range in a different direction at another time. . Therefore, the imaging apparatus 1A can capture a wide range of element images.

  Further, compared to the case where the principal point of the first direction control lens 12 is arranged on the optical axis of the projection optical system 13A as shown in FIG. 3A, in FIG. The element image is projected at a position shifted to the right side. Then, the image sensor moving means moves the image sensor 14A in a direction orthogonal to the optical axis and installs it at a position where the element image is projected by the projection optical system 13A. The element image group can be captured by the element 14A. Here, the principal point and projection of the first direction control lens 12 according to the movement of the first direction control lens 12 by the first direction control lens moving means (not shown) and the projection optical system 13A by the projection optical system moving means. The image sensor is moved by an image sensor moving means (not shown) to a position where a straight line connecting the principal point of the optical system 13A is at the center of the light receiving surface of the image sensor 14A. That is, here, the image sensor moving means is a straight line connecting the principal point of the first direction control lens 12 and the principal point of the projection optical system 13A as the first direction control lens 12 and the projection optical system 13A move. The image sensor is moved in the direction orthogonal to the optical axis by the distance that the intersection with the light receiving surface of the image sensor 14A moves.

[Configuration of Imaging Device (Third Embodiment)]
Next, with reference to FIG. 4, the structure of the imaging device 1B which is 3rd embodiment of this invention is demonstrated. FIG. 4 is a schematic diagram illustrating the configuration of the imaging apparatus according to the third embodiment of the present invention, (a) is a schematic diagram illustrating the configuration of the imaging apparatus, and (b) is imaging in the other direction. It is the schematic diagram which showed the structure of the imaging device when doing. Here, the optical path of parallel light passing through the principal point of the elemental image optical system 111 is schematically shown. As shown in FIG. 4, the imaging device 1B captures an elemental image group of a subject (not shown).

  The imaging device (element image group imaging device) 1B includes a first direction control lens 12B instead of the first direction control lens 12 of the imaging device 1 (see FIG. 1), and a projection optical system 13B instead of the projection optical system 13. Prepare. Furthermore, the imaging apparatus 1B includes a projection optical system moving unit (not shown) instead of a first direction control lens moving unit (not shown). Since the configuration other than the first direction control lens 12B and the projection optical system 13B in the imaging apparatus 1B is the same as that shown in FIG. 1, the same reference numerals are given and the description thereof is omitted.

  The first direction control lens (first direction control lens system) 12B controls the direction in which the element image is captured by the image sensor 14 described later. Here, a projection optical system 13B, which will be described later, is installed at a position away from the first direction control lens 12B by the focal length of the first direction control lens 12B in the optical axis direction. The first direction control lens 12 </ b> B does not move in a direction orthogonal to the optical axis, and the arrangement is fixed with respect to the element image optical system array 11 and the image sensor 14.

  The projection optical system 13B projects the element image group formed by the element image optical system array 11 onto the image sensor 14. Then, the projection optical system 13B is moved by a predetermined width in a direction orthogonal to the optical axis of the projection optical system 13B by a projection optical system moving unit (direction changing unit) (not shown).

  Here, as shown in FIG. 4A, the principal point of the projection optical system 13B, the principal point of the first direction control lens 12B, and the principal point of the element image optical system 111 in the center of the element image optical system array 11 Are arranged on a straight line. The projection optical system 13B is installed at a position away from the first direction control lens 12B by the focal length of the first direction control lens 12B. Therefore, light passing through the principal point of each elemental image optical system 111 incident in the direction of the straight line (optical axis direction) passing through the principal point of the first direction control lens 12B and the principal point of the projection optical system 13B is projected. It converges to the principal point of the optical system 13B. Then, the element image centered in the direction D1 is projected onto the image sensor 14 to be described later by the projection optical system 13B, and the direction in which the element image optical system 111 of each element image optical system array 11 is imaged It can be set in the axial direction (direction D1).

  Here, the projection optical system 13B is moved in a direction orthogonal to the optical axis by a projection optical system moving means (not shown), and as shown in FIG. 4B, the principal point of the projection optical system 13B and the first direction control lens The principal point of 12B and the principal point of the element image optical system 111 on the right side of the element image optical system 111 at the center of the element image optical system array 11 are arranged on a straight line. Then, light passing through the principal point of each elemental image optical system 111 incident in the direction of a straight line passing through the principal point of the first direction control lens 12B and the principal point of the projection optical system 13B (the direction opposite to the direction D2). , It converges to the principal point of the projection optical system 13B. As a result, the direction in which the element image is taken by each element image optical system 111 of the element image optical system array 11 is the direction D2 of a straight line passing through the principal point of the first direction control lens 12B and the principal point of the projection optical system 13B. Can be set to

  As described above, the image pickup apparatus 1B moves the projection optical system 13B in a direction orthogonal to the optical axis by a projection optical system moving unit (not shown), whereby the image pickup device 14 causes element image groups in two different directions D1 and D2. Can be imaged. Thereby, the imaging apparatus 1B can capture an element image group in a predetermined angle range in a certain direction at a certain time, and can capture an element image group in a predetermined angle range in a different direction at another time. Therefore, a wide range of element images can be taken. Note that the projection optical system 13B of the imaging apparatus 1B may be moved to three or more different positions by a projection optical system moving unit (not shown). As a result, a group of element images in a predetermined angle range in three or more directions can be captured, and a wide range of element images can be captured. Furthermore, the projection optical system 13B may be moved by the projection optical system moving means to a position where the direction of the straight line passing through the principal point of the projection optical system 13B and the principal point of the first direction control lens 12B does not match. .

[Configuration of Imaging Device (Fourth Embodiment)]
Next, with reference to FIG. 5, the configuration of an imaging apparatus 1C according to the fourth embodiment of the present invention will be described. FIG. 5 is a schematic diagram showing a configuration of an imaging apparatus according to the fourth embodiment of the present invention. Here, the optical path of parallel light passing through the principal point of the elemental image optical system 111 is schematically shown. As shown in FIG. 5, the imaging device 1C captures an elemental image group of a subject (not shown).

  An image pickup apparatus (element image group image pickup apparatus) 1C includes a projection optical system 13Ca and a projection optical system 13Cb instead of the projection optical system 13 of the image pickup apparatus 1B (see FIG. 4), an image pickup element 14Ca and an image pickup instead of the image pickup element 14. An element 14Cb is provided. Since the configuration other than the projection optical system 13Ca, the projection optical system 13Cb, the image sensor 14Ca, and the image sensor 14Cb in the image pickup apparatus 1C is the same as that shown in FIG. 1, the same reference numerals are given and the description is omitted. .

  The projection optical system 13Ca projects the element image group formed by the element image optical system array 11 onto the image sensor 14Ca. Here, the principal point of the projection optical system 13Ca, the principal point of the first direction control lens 12B, and the principal point of the elemental image optical system 111 in the center of the elemental image optical system array 11 are arranged on a straight line. did. Since the projection optical system 13Ca is installed at a position away from the first direction control lens 12B by the focal length of the first direction control lens 12B, the principal point of the first direction control lens 12B and the projection optical system. Light passing through the principal point of each elemental image optical system 111 and incident in the direction of the straight line (optical axis direction) passing through the principal point of 13Ca converges to the principal point of the projection optical system 13Ca. Therefore, the direction in which an element image is captured by each element image optical system 111 of the element image optical system array 11 is set to the optical axis direction (direction D1).

  The projection optical system 13Cb projects the element image group formed by the element image optical system array 11 onto the image sensor 14Cb. Here, the principal point of the projection optical system 13Cb, the principal point of the first direction control lens 12B, and the principal point of the element image optical system 111 adjacent to the right of the element image optical system 111 in the center of the element image optical system array 11 Are arranged on a straight line. Since the projection optical system 13Cb is installed at a position away from the first direction control lens 12B by the focal length of the first direction control lens 12B, the principal point of the first direction control lens 12B and the element image optics The principal point of each element image optical system 111 incident in the direction of a straight line passing through the principal point of the element image optical system 111 adjacent to the right of the element image optical system 111 in the center of the system array 11 (the direction opposite to the direction D2) The light passing through converges on the principal point of the projection optical system 13Cb. Therefore, the direction in which an element image is captured by each element image optical system 111 of the element image optical system array 11 is set to the straight line direction D2.

  The imaging element 14Ca captures an element image group generated by the element image optical system array 11 and projected by the projection optical system 13Ca. Here, light of an element image group photographed around the optical axis direction by each element image optical system array 11 is incident on the projection optical system 13Ca, and the image sensor 14Ca images the element image group.

  The image sensor 14Cb captures an element image group generated by the element image optical system array 11 and projected by the projection optical system 13Cb. Here, by each element image optical system array 11, the principal point of the first direction control lens 12 </ b> B and the principal point of the element image optical system 111 right next to the central element image optical system 111 of the element image optical system array 11 are The light of the element image group photographed in the direction D2 of the straight line passing through the lens enters the projection optical system 13Cb, and the image sensor 14Cb images the element image group.

  As described above, the imaging apparatus 1C includes the two projection optical systems 13Ca and 13Cb and the two imaging elements 14Ca and 14Cb, so that it is possible to capture the element image groups in the two different directions D1 and D2. Accordingly, the imaging apparatus 1C can capture an element image group in a predetermined angle range in two directions, and can capture a wide range of element images. Note that the imaging apparatus 1C may include three or more projection optical systems and an imaging element (not shown). As a result, a group of element images in a predetermined angle range in three or more directions can be captured, and a wide range of element images can be captured. Further, the projection optical system (not shown) may be arranged so that the directions of the straight lines passing through the respective projection optical systems and the principal point of the first direction control lens 12B do not coincide with each other.

[Configuration of Imaging Apparatus (Fifth Embodiment)]
Next, with reference to FIG. 6, the configuration of an imaging apparatus 1D according to the fifth embodiment of the present invention will be described. FIG. 6 is a schematic diagram showing a configuration of an imaging apparatus according to the fifth embodiment of the present invention. Here, the optical path of parallel light passing through the principal point of the elemental image optical system 111 is schematically shown. As shown in FIG. 6, the imaging device 1D captures an elemental image group of a subject (not shown).

  An imaging device (element image group imaging device) 1D includes a first direction control lens 12D instead of the first direction control lens 12B of the imaging device 1C (see FIG. 5), and a projection optical system 13Da instead of the projection optical system 13Ca. A projection optical system 13Db is provided instead of the projection optical system 13Cb, and a second direction control lens 15D, a light shielding means 16D, and field lenses 17Da and 17Db are added. The elemental image optical system array 11 and the imaging elements 14Ca and 14Cb in the imaging apparatus 1D are the same as those shown in FIG.

  The first direction control lens (first direction control lens system) 12D controls the direction in which the element image of the element image optical system array 11 is photographed by image sensors 14Ca and 14Cb described later. Here, the second direction control lens 15D, which will be described later, is installed at a position away from the first direction control lens 12D by the focal length of the first direction control lens 12D. Therefore, the first direction control lens 12D converges the parallel light incident on the first direction control lens 12D to one point on the second direction control lens 15D. In addition, the element image optical system array 11 forms an element image group on the first direction control lens 12D.

  The second direction control lens (second direction control lens system) 15D converts light that has passed through the principal point of the first direction control lens 12D into light that is parallel to the optical axis of the second direction control lens 15D. is there. Here, the second direction control lens 15D is configured by a convex lens. Furthermore, the object-side focal point of the second direction control lens 15D and the principal point of the first direction control lens 12D coincide with each other. As a result, the light passing through the principal point of the first direction control lens 12D is emitted as light parallel to the optical axis of the second direction control lens 15D. A light shielding unit 16D having two openings 16Da and 16Db is provided inside the second direction control lens 15D.

  The light shielding unit 16D has openings 16Da and 16Db, and shields light other than light passing through the openings 16Da and 16Db from light incident on the second direction control lens 15D. Here, the light shielding means 16D is provided inside the second direction control lens 15D, and has an opening 16Da on the optical axis of the second direction control lens 15D, and an opening 16Db at a position spaced by a predetermined distance to the left thereof.

  Here, the principal point of the elemental image optical system 111 at the center of the elemental image optical system array 11, the principal point of the first direction control lens 12D, and the center of the opening 16Da are arranged on a straight line. Then, the light parallel to the optical axis that has passed through the principal points of the elemental image optical systems 111, 111,... Is collected by the first direction control lens 12D and converges on the opening 16Da. The principal point of the element image optical system 111 adjacent to the right of the element image optical system 111 at the center of the element image optical system array 11, the principal point of the first direction control lens 12D, and the center of the opening 16Db are arranged on a straight line. Has been. ... The light that passes through the principal points of the elemental image optical systems 111, 111,... Parallel to the straight line is condensed by the first direction control lens 12D and converges to the opening 16Db. Thus, by installing the light shielding means 16D having the openings 16Da and 16Db, the light shielding means 16D is centered on the directions D1 and D2 connecting the principal point of the first direction control lens 12D and the openings 16Da and 16Db. Only the light from the element image in the predetermined angle range is passed through the openings 16Da and 16Db, and the other light is blocked.

  The field lens (field lens system) 17Da corresponds to the opening 16Da, and transmits light from the corresponding opening 16Da to the projection optical system 13Da. This field lens 17Da enters the first direction control lens 12D as parallel light and converges the light converged on one point on the second direction control lens 15D again to the principal point of the projection optical system 13Da.

  The field lens 17Db corresponds to the opening 16Db, and transmits light from the corresponding opening 16Db to the projection optical system 13Db. The field lens 17Db enters the first direction control lens 12D as parallel light and converges the light converged on one point on the second direction control lens 15D again to the main point of the projection optical system 13Db.

  The projection optical system 13Da corresponds to the field lens 17Da, and projects an element image group formed between the corresponding field lens 17Da and the projection optical system 13Da onto the image sensor 14Ca. Here, it is assumed that the optical axes of the field lens 17Da, the projection optical system 13Da, and the second direction control lens 15D coincide.

  The projection optical system 13Db corresponds to the field lens 17Db, and projects an element image group formed between the corresponding field lens 17Db and the projection optical system 13Db onto the image sensor 14Cb. Here, the projection optical system 13Db is arranged so that the optical axes of the field lens 17Db and the corresponding projection optical system 13Db coincide and are parallel to the optical axis of the second direction control lens 15D. It was decided.

  With this configuration, the imaging device 1D can capture element images in different directions D1 and D2 by the imaging elements 14Ca and 14Cb, and can capture a wide range of element images. Also, by changing the direction of the principal ray of the light that has passed through the first direction control lens 12D to the optical axis direction by the second direction control lens 15D, it is possible to pick up the element image by facing the imaging elements 14Ca and 14Cb. it can. The imaging device 1D may include three or more apertures, a field lens, a projection optical system, and an imaging device (not shown). As a result, a group of element images in a predetermined angle range in three or more directions can be captured, and a wide range of element images can be captured. Furthermore, the openings 16Da and 16Db need only be arranged so that the directions of the straight lines passing through the centers of the openings 16Da and 16Db and the principal point of the first direction control lens 12D do not coincide with each other. It is only necessary that the light from different directions D1 and D2 is set so as not to leak into each other.

[Configuration of Imaging Device (Sixth Embodiment)]
Next, with reference to FIG. 7, the structure of the imaging device 1E which is the 6th embodiment of this invention is demonstrated. FIG. 7 is a schematic diagram illustrating a configuration of an imaging apparatus according to a sixth embodiment of the present invention, (a) is a schematic diagram illustrating the configuration of the imaging apparatus, and (b) is an imaging in another direction. It is the schematic diagram which showed the structure of the imaging device when doing. Here, the optical path of parallel light passing through the principal point of the elemental image optical system 111 is schematically shown. As shown in FIG. 7, the imaging device 1E captures an element image group of a subject (not shown).

  The imaging device (element image group imaging device) 1E does not include the second direction control lens 15D and the field lenses 17Da and 17Db of the imaging device 1D (see FIG. 6), and instead of the projection optical systems 13Da and 13Db, the projection optical system 13E is provided with a light shielding means 16E instead of the light shielding means 16D, and an imaging element 14E instead of the imaging elements 14Ca and 14Cb. The elemental image optical system array 11 and the first direction control lens 12D in the imaging apparatus 1E are the same as those shown in FIG.

  The projection optical system 13E projects an element image group formed between the element image optical system array 11 and the first direction control lens 12D onto the image sensor 14E. Here, it is assumed that the image-side focal point of the first direction control lens 12D coincides with the principal point of the projection optical system 13E. Inside the projection optical system 13E, a light shielding means 16E having two openings 16Ea and 16Eb is provided.

  The light shielding unit 16E has openings 16Ea and 16Eb, and shields light other than light passing through the opening 16Ea or the opening 16Eb from light incident on the projection optical system 13E. Here, the light shielding means 16E is provided inside the projection optical system 13E, and has an opening 16Ea on the optical axis of the projection optical system 13E, and an opening 16Eb at a position spaced to the left by a predetermined interval. The openings 16Ea and 16Eb can be opened and closed. This light shielding means 16E can be constituted by a liquid crystal element, for example. Here, in the light shielding means 16E, only the opening 16Ea opens at a certain time, and only the opening 16Eb opens at another time. As a result, the light shielding unit 16E changes the optical axis direction (direction D1) formed between the first direction control lens 12D and the element optical system array 11 at a certain time as shown in FIG. The light from the central element image is allowed to pass, and at another time, as shown in FIG. 7B, the aperture 16Eb imaged between the first direction control lens 12D and the element optical system array 11 is formed. It is possible to pass light from an element image centered on a direction D2 connecting the main point of the first direction control lens 12D.

  As described above, the imaging device 1E switches between the openings 16Ea and 16Eb of the light shielding unit 16E so that the image sensor 14E can capture the element image groups in two different directions D1 and D2. Thereby, an element image group in a predetermined angle range in a certain direction can be imaged at a certain time, and an element image group in a predetermined angle range in a different direction can be imaged at another time. Therefore, the imaging device 1E can capture a wide range of element images. In addition, the light shielding unit 16E of the imaging device 1E may have three or more openings (not shown). As a result, a group of element images in a predetermined angle range in three or more directions can be captured, and a wide range of element images can be captured. Furthermore, the openings 16Ea and 16Eb may be installed at positions where the directions of the straight lines passing through the centers of the openings 16Ea and 16Eb and the principal point of the first direction control lens 12D do not coincide with each other, and the sizes of the openings 16Ea and 16Eb. It is only necessary that the light from different directions D1 and D2 is set so as not to leak into each other.

[Configuration of Imaging Device (Seventh Embodiment)]
Next, with reference to FIG. 8, the structure of the imaging device 1F which is the 7th Embodiment of this invention is demonstrated. FIG. 8 is a schematic diagram showing a configuration of an imaging apparatus according to the seventh embodiment of the present invention. In FIG. 8, the optical path of the light passing through each of the openings 16Ea and 16Eb and the position of the image sensor 14F corresponding to each of the openings 16Ea and 16Eb that are opened at different times are shown as follows. Indicated by a solid line and a one-dot chain line. As shown in FIG. 8, the imaging device 1F captures an element image group of a subject (not shown).

  An imaging device (element image group imaging device) 1F includes an imaging device 14F instead of the imaging device 14E of the imaging device 1E (see FIG. 7). Since the configuration other than the imaging element 14F in the imaging apparatus 1E is the same as that shown in FIG. 7, the same reference numerals are given and the description thereof is omitted.

  The image sensor 14F captures an element image group generated by the element image optical system array 11 and projected by the projection optical system 13E. The image sensor 14F is moved by a predetermined width in a direction orthogonal to the optical axis of the projection optical system 13E according to the position of the open opening (16Ea or 16Eb) by an image sensor moving means (not shown).

  Here, for example, as illustrated in FIG. 7B, in the imaging apparatus 1 </ b> E, when the opening 16 </ b> Eb that is shifted to the left from the principal point of the first direction control lens 12 </ b> D is open, FIG. Compared to the case where the opening 16Ea that coincides with the principal point of the first direction control lens 12D is opened as in (a), the elemental image is projected to a position shifted to the left by the projection optical system 13E. Therefore, the imaging device 1E requires an imaging element 14E having a light receiving part with a large area. However, as shown in FIG. 8, the imaging apparatus 1F moves the imaging element 14F in a direction orthogonal to the optical axis according to the position of the open opening (16Ea or 16Eb), and the projection optical system 13E By installing the image at the position where the image is projected, the element image group can be picked up by the image pickup device 14F having a light receiving portion smaller than the image pickup device 14E of the image pickup apparatus 1E.

[Configuration of Imaging Device (Modification of Second to Seventh Embodiments)]
The first direction control lenses 12, 12B, and 12D of the imaging devices 1A, 1B, 1C, 1E, and 1F (see FIGS. 3 to 5, 7, and 8) are projection optical systems 13A, 13B, 13Ca, and 13Cb. 13E may be installed at a position that is larger than the focal length of the first direction control lenses 12 and 12B in the optical axis direction. Further, the first direction control lens 12D of the imaging device 1D (see FIG. 6) is installed at a position that is larger than the focal length of the first direction control lens 12D from the second direction control lenses 15D and 15E and separated in the optical axis direction. It is also good to do.

  Here, with reference to FIG. 9, the imaging device 1 </ b> F ′ in which the first direction control lens 12 </ b> D ′ is installed at a position larger than the focal length and separated from the projection optical system 13 </ b> E in the optical axis direction will be described. FIG. 9 is a schematic diagram showing a configuration of a modified example of the imaging apparatus according to the seventh embodiment of the present invention. Here, the case where the imaging device 1F is deformed will be described as an example, but the same effect can be obtained even when the configuration of the imaging devices 1A to 1E is similarly modified.

  As shown in FIG. 9, the imaging device (element image group imaging device) 1 </ b> F ′ captures an element image group of a subject (not shown). The imaging device 1F ′ includes a first direction control lens 12D ′ instead of the first direction control lens 12D of the imaging device 1F (see FIG. 8). Since the configuration other than the first direction control lens 12D ′ in the imaging device 1F ′ is the same as that shown in FIG. 8, the same reference numerals are given and the description thereof is omitted.

  The first direction control lens (first direction control lens system) 12D 'controls the direction in which the element image is captured by the image sensor 14F. Here, the projection optical system 13E is installed at a position away from the first direction control lens 12D 'by a distance larger than the focal length of the first direction control lens 12D'. Then, with respect to the first direction control lens 12D ', the center of the opening 16Ea and the point P1 are conjugate positions, and the center of the opening 16Eb and the point P2 are conjugate positions. Thereby, the imaging device 1F ′ captures an element image group including element images centered on the point P1 by the imaging element 14F when the opening 16Ea is open, and centers the point P2 when the opening 16Eb is open. It is possible to capture an element image group consisting of the element images.

[Configuration of Imaging Device (Other Modifications of First to Seventh Embodiments)]
Furthermore, the element image optical system 111 of the imaging devices 1, 1 ′, 1A to 1F (see FIGS. 1 to 8) is an optical system that forms an image of a subject (not shown) and generates an element image. What is necessary is just to be comprised from a concave lens, for example.

  Here, with reference to FIG. 10, an imaging apparatus 1F ″ having an elemental image optical system 111 ″ composed of a concave lens will be described. FIG. 10 is a schematic diagram showing the configuration of another modification of the imaging apparatus according to the seventh embodiment of the present invention. Here, the case where the imaging device 1F ′ is modified will be described as an example, but the same effect can be obtained even when the configuration of the imaging devices 1, 1 ′ and 1A to 1E is similarly modified. It is done.

  As shown in FIG. 10, the imaging device (elemental image group imaging device) 1F ″ captures an elemental image group of a subject (not shown). The imaging device 1F ″ captures the imaging device 1F ′ (FIG. 9). The element image optical system array 11 ″ is replaced with the element image optical system array 11 ″. The configuration other than the element image optical system array 11 ″ in the imaging device 1F ″ is the same as that shown in FIG. Therefore, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  The element image optical system array 11 ″ generates an element image group of a subject (not shown). The element image optical system array 11 ″ is arranged in an array on the same plane orthogonal to the optical axis. The plurality of elemental image optical systems 111 ″, 111 ″,.

  The elemental image optical system 111 ″ is a system in which light from a subject is incident to form an image of the subject to generate an elemental image. The elemental image optical system 111 ″ is composed of a concave lens, and includes an element of the subject. An image is generated on the image-side focal plane F of the elemental image optical system 111 ″.

  The element image group formed on the image-side focal plane F is imaged again on the image sensor 14F by the first direction control lens 12D ′ and the second direction control lens 15E, and is imaged by the image sensor 14F. .

  The elemental image optical systems 111 and 111 ″ may be composed of, for example, a refractive index distribution lens or a diffractive optical element, or are composed of a lens system in which a plurality of lenses are arranged in the optical axis direction. Further, when the elemental image optical systems 111, 111,... (111 ″, 111 ″,...) Are arranged only in the horizontal direction, a convex shape having a finite curvature only in the horizontal direction or It is good also as being comprised from a concave cylindrical lens.

[Configuration of Imaging Device (Eighth Embodiment)]
Next, with reference to FIG. 11, a configuration of an imaging apparatus 1G according to the eighth embodiment of the present invention will be described. FIG. 11 is a schematic diagram showing the configuration of the imaging apparatus according to the eighth embodiment of the present invention. Here, the optical paths of light passing through the principal points of the elementary image optical systems 111Ga and 111Gb of the elementary image optical system arrays 11Ga and 11Gb and the principal points of the projection optical systems 13Ga and 13Gb are schematically illustrated. As shown in FIG. 11, the imaging device 1G captures an elemental image group of a subject (not shown).

  The imaging device (element image group imaging device) 1G includes a half mirror 20G, a first imaging system 1Ga, and a second imaging system 1Gb. The half mirror (light distribution means) 20G distributes light from a subject (not shown) to the first imaging system 1Ga and the second imaging system 1Gb. Here, the half mirror 20G reflects a part of the light from the subject and transmits a part thereof. The first imaging system 1Ga is installed on the optical path of the reflected light, and the reflected light is incident on the first imaging system 1Ga. The second imaging system 1Gb is installed on the optical path of the transmitted light, and the transmitted light is incident on the second imaging system 1Gb.

  The first imaging system (imaging system) 1Ga images an element image group including element images centered on the point P1. The first imaging system 1Ga includes an elemental image optical system array 11Ga, a field lens array 19Ga, a first direction control lens 12Ga, a projection optical system 13Ga, and an imaging element 14Ga. Note that the projection optical system 13Ga and the imaging element 14Ga of the first imaging system 1Ga are the same as the projection optical system 13 and the imaging element 14 of the imaging apparatus 1 '(see FIG. 2), and thus description thereof is omitted.

  The element image optical system array 11Ga generates an element image group including element images of a subject (not shown). The element image optical system array 11Ga is composed of a plurality of element image optical systems 111Ga, 111Ga,... Arranged in an array on the same plane orthogonal to the optical axis.

  The element image optical system 111Ga forms an element image by forming an image of the subject by incidence of light from the subject reflected by the half mirror 20G. The light emitted from the elemental image optical system 111Ga enters the corresponding field lens 191Ga. Then, the element image optical system 111Ga generates an element image on the corresponding field lens 191Ga.

  In the field lens array 19Ga, an element image group is formed inside by the element image optical system array 11Ga, and light incident from the element image optical system array 11Ga is transmitted to the first direction control lens 12Ga. The field lens array 19Ga includes a plurality of field lenses 191Ga, 191Ga,... Arranged in an array on the same plane orthogonal to the optical axis.

  The field lens 191Ga corresponds to each of the element image optical systems 111Ga, and transmits light incident from the corresponding element image optical system 111Ga to the first direction control lens 12Ga. The field lens 191Ga is composed of a convex lens. An element image is formed inside the field lens 191Ga by the corresponding element image optical system 111Ga. The light emitted from the point P1 is bent by the half mirror 20G, and then passes through the principal point of the element image optical system 111Ga and the principal point of the field lens 191Ga corresponding to the element image optical system 111Ga. In addition, an elemental image optical system 111Ga and a field lens 191Ga are arranged. Thereby, an element image centered on the point P1 is formed inside the field lens 191Ga by the element image optical system 111Ga.

  The first direction control lens (first direction control lens system) 12Ga controls the direction in which an element image is captured by the image sensor 14Ga. Here, the projection optical system 13Ga is installed at a position away from the focal length of the first direction control lens 12Ga from the first direction control lens 12Ga. The first direction control lens 12Ga has a principal point on the optical axis of the projection optical system 13Ga. Then, the optical axis of the projection optical system 13Ga is bent by the half mirror 20G, and the point P1 on the bent optical axis and the principal point of the projection optical system 13Ga are conjugated with respect to the first direction control lens 12Ga. Become position. Therefore, the element image about the range of the predetermined width W1 centered on the point P1 generated by each element image optical system 111Ga is projected onto the image sensor 14Ga by the projection optical system 13Ga. Then, the first imaging system 1Ga images an element image group including element images centered on the point P1 by the imaging element 14Ga.

  The second imaging system (imaging system) 1Gb captures an element image group including element images centered on the point P2. The second imaging system 1Gb includes an elemental image optical system array 11Gb, a field lens array 19Gb, a first direction control lens 12Gb, a projection optical system 13Gb, and an imaging element 14Gb. Note that the projection optical system 13Gb and the imaging element 14Gb of the second imaging system 1Gb are the same as the projection optical system 13 and the imaging element 14 of the imaging apparatus 1 '(see FIG. 2), and thus description thereof is omitted.

  The element image optical system array 11Gb generates an element image group including element images of a subject (not shown). The element image optical system array 11Gb is composed of a plurality of element image optical systems 111Gb, 111Gb,... Arranged in an array on the same plane orthogonal to the optical axis.

  The elemental image optical system 111Gb is configured to generate an elemental image by forming an image of a subject when light from the subject that has passed through the half mirror 20G enters. The light emitted from the elemental image optical system 111Gb enters the corresponding field lens 191Gb. Then, the element image optical system 111Gb generates an element image on the corresponding field lens 191Gb.

  In the field lens array 19Gb, an element image group is formed inside by the element image optical system array 11Gb, and light incident from the element image optical system array 11Gb is transmitted to the first direction control lens 12Gb. The field lens array 19Gb is composed of a plurality of field lenses 191Gb, 191Gb,... Arranged in an array on the same plane orthogonal to the optical axis.

  The field lens 191Gb corresponds to each of the elemental image optical systems 111Gb, and transmits light incident from the corresponding elemental image optical system 111Gb to the first direction control lens 12Gb. An element image is formed inside the field lens 191Gb by the corresponding element image optical system 111Gb. The light emitted from the point P2 passes through the half mirror 20G, and then passes through the principal point of the element image optical system 111Gb and the principal point of the field lens 191Gb corresponding to the element image optical system 111Gb. An image optical system 111Gb and a field lens 191Gb are disposed. As a result, an element image centered on the point P2 is formed inside the field lens 191Gb by the element image optical system 111Gb.

  The first direction control lens (first direction control lens system) 12Gb controls the direction in which the element image is captured by the image sensor 14Gb. Here, the projection optical system 13Gb is installed at a position away from the first direction control lens 12Gb in the optical axis direction from the focal length of the first direction control lens 12Gb. The first direction control lens 12Gb has a principal point on a line connecting the principal point of the projection optical system 13Gb and the point P2, and the principal point of the projection optical system 13Gb with respect to the first direction control lens 12Gb, The point P2 is a conjugate position. Therefore, the element image about the range of the predetermined width W2 centered on the point P2 generated by each element image optical system 111Gb is projected onto the image sensor 14Gb by the projection optical system 13Gb. And 2nd imaging system 1Gb images the element image group which consists of an element image centering on the point P2 with the image pick-up element 14Gb.

  As a result, the imaging apparatus 1G uses the first imaging system 1Ga to generate an element image for a range of a predetermined width W1 centered on the point P1, and the second imaging system 1Gb uses a range of the predetermined width W2 centered on the point P2. The element image about can be taken. Here, the case where the ranges captured by the first imaging system 1Ga and the second imaging system 1Gb do not overlap has been described. However, this range may overlap, and the points P1 and P2 that are the centers of the element images captured by the first imaging system 1Ga and the second imaging system 1Gb are at different positions, that is, in the first direction. The points P1 and P2 that are conjugate to the principal points of the projection optical systems 13Ga and 13Gb may be located at different positions with respect to the control lenses 12Ga and Gb.

[Configuration of Imaging Apparatus (Ninth Embodiment)]
Next, with reference to FIG. 12, a configuration of an imaging apparatus according to the ninth embodiment of the present invention will be described. FIG. 12 is a schematic diagram showing the configuration of the second imaging system of the imaging apparatus according to the ninth embodiment of the present invention. Here, the optical path of light passing through the principal point of the element image optical system 111Gb of the element image optical system array 11Gb and the center of the opening 161Hb is schematically illustrated. The imaging device (element image group imaging device, not shown) according to the ninth embodiment is for imaging an element image group of a subject (not shown), and is the second of the imaging device 1G shown in FIG. The imaging system 1Gb is replaced with a second imaging system 1Hb shown in FIG.

  The second imaging system (imaging system) 1Hb replaces the first direction control lens 12Gb of the second imaging system 1Gb (see FIG. 11) with the first direction control lens 12Hb, and the projection optical system 13Hb instead of the projection optical system 13Gb. The image pickup device 14Gb is replaced with an image pickup device 14Hb, and a light shielding means 16Hb is further added. Since the configuration other than the first direction control lens 12Hb, the projection optical system 13Hb, the imaging element 14Hb, and the light shielding unit 16Hb in the second imaging system 1Hb is the same as that shown in FIG. Description is omitted.

  The first direction control lens (first direction control lens system) 12Hb controls a direction in which an element image is captured by an image sensor 14Hb described later. Here, the light shielding means 16Hb, which will be described later, is installed at a position away from the first direction control lens 12Hb in the optical axis direction from the focal length of the first direction control lens 12Hb. The first direction control lens 12Hb has a principal point on a line connecting the center of the opening 161Hb and the point P2, and with respect to the first direction control lens 12Hb, the center of the opening 161Hb of the light shielding unit 16Hb and the point P2 And become a conjugate position. Therefore, the light from the element image for the range of the predetermined width W2 centered on the point P2 generated by each element image optical system 111Gb is condensed at the center of the opening 161Hb of the light shielding unit 16Hb. The light shielding unit 16Hb has an opening 161Hb, and shields light other than light passing through the opening 161Hb out of light incident on the projection optical system 13Hb.

  The projection optical system 13Hb projects light that has passed through the aperture 161Hb onto an image sensor 14Hb described later. Here, the focal point of the projection optical system 13Hb coincides with the center of the aperture 161Hb, and the optical axis of the projection optical system 13Hb is the optical axis of the element image optical system 111Gb, the field lens 191Gb, and the first direction control lens 12Hb. The projection optical system 13Hb is arranged so as to be parallel.

  The imaging element (imaging means) 14Hb captures an element image group generated by the element image optical system array 11Gb and projected by the projection optical system 13Hb. Here, by each element image optical system array 11Gb, the light of the element image group centered on the point P2 on the straight line passing through the principal point of the first direction control lens 12Hb and the opening 161Hb is transmitted to the projection optical system 13Hb. Incident light is picked up by the image sensor 14Hb.

  By configuring in this way, the second imaging system 1Hb can capture the element image by facing the imaging element 14Hb. Here, the point P2, which is the center of the element image picked up by the second image pickup system 1Hb, that is, the point P2 which is conjugate with the center of the opening 161Hb with respect to the first direction control lens 12Hb, and the first image pickup system. It suffices if the point (not shown) that is the center of the element image captured by (not shown) is set at a different position.

[Configuration of Imaging Device (Modifications of Eighth and Ninth Embodiments)]
Here, in the image pickup apparatus 1G (see FIG. 11), the first direction control lenses 12Ga and 12Gb are arranged apart from the focal length of the first direction control lenses 12Ga and 12Gb in the optical axis direction from the projection optical systems 13Ga and 13Gb. The shooting direction converges to points P1 and P2. In the second imaging system 1Hb (see FIG. 12), the first direction control lens 12Hb is arranged in the optical axis direction from the opening 161Hb and separated from the focal length of the first direction control lenses 12Ha, 12Hb, and the shooting direction is set. It was decided to converge at the point P2. However, the imaging apparatus of the present invention may have a configuration in which the shooting directions are parallel.

  At this time, the first direction control lenses 12Ga and 12Gb of the imaging device 1G (see FIG. 11) are separated from the principal points of the projection optical systems 13Ga and 13Gb by the focal length of the first direction control lenses 12Ga and 12Gb in the optical axis direction. Can be arranged. Further, the first direction control lens 12Hb of the second imaging system 1Hb (see FIG. 12) may be arranged at a focal distance of the first direction control lens 12Hb in the optical axis direction from the center of the opening 161Hb.

[Configuration of Imaging Device (Eighth and Ninth Modifications of Ninth Embodiment 1)]
In the first imaging system 1Ga and the second imaging system 1Gb (see FIG. 11) and 1Hb (see FIG. 12), the element image optical systems 111Ga and 111Gb are configured by convex lenses. , 111Gb may be an optical system that forms an element image by forming an image of a subject (not shown), and may be composed of, for example, a concave lens.

  For example, as shown in FIG. 13, the elemental image optical system 111Ia of the first imaging system 1Ia may be formed of a concave lens. FIG. 13 is a schematic diagram illustrating a configuration of a modification of the first imaging system according to the eighth embodiment of the present invention. Here, the case where the first imaging system 1Ga of the imaging apparatus 1G is modified to be the first imaging system 1Ia will be described as an example, but the second imaging systems 1Gb, 1Hb (see FIGS. 11 and 12) will be described. The same effect can be obtained even when the structure is similarly modified.

  As shown in FIG. 13, the first imaging system (imaging system) 1Ia captures an element image group including element images centered on a point P1. The first imaging system 1Ia includes an elemental image optical system array 11Ia instead of the elemental image optical system array 11Ga of the first imaging system 1Ga (see FIG. 11). Since the configuration other than the elemental image optical system array 11Ia in the first imaging system 1Ia is the same as that shown in FIG. 11, the same reference numerals are given and description thereof is omitted.

  The element image optical system array 11Ia generates an element image group of a subject (not shown). This element image optical system array 11Ia is composed of a plurality of element image optical systems 111Ia, 111Ia,... Arranged in an array on the same plane orthogonal to the optical axis.

  The element image optical system 111Ia forms an image of a subject by receiving light from the subject and generates an element image. This elemental image optical system 111Ia is composed of a concave lens, and generates an elemental image of the subject on the image-side focal plane F of the elemental image optical system 111Ia. The element image group formed on the image-side focal plane F is projected onto the image sensor 14Ga by the first direction control lens 12Ga and the projection optical system 13Ga, and is imaged by the image sensor 14Ga.

[Configuration of Imaging Device (Eighth, Ninth Modification 2 of Embodiment 9)]
Further, the first imaging system 1Ga (see FIG. 11), 1Ia, and the second imaging system 1Gb, 1Hb (see FIG. 12) are respectively provided with one projection optical system 13Ga, 13Gb, 13Hb and one imaging element 14Ga, 14Gb, 14Hb. However, each of the first imaging systems 1Ga and 1Ia and the second imaging systems 1Gb and 1Hb may be imaged by a plurality of projection optical systems and a plurality of imaging elements.

  For example, as shown in FIG. 14, in the first imaging system 1 Ja, imaging may be performed with a plurality of projection optical systems 13 Ja, 13 Ja, 13 Ja and a plurality of imaging elements 14 Ja, 14 Ja, 14 Ja. FIG. 14 is a schematic diagram showing the configuration of another modification of the first imaging system of the eighth embodiment of the present invention. Here, the case where the first imaging system 1Ga of the imaging apparatus 1G is modified to be the first imaging system 1Ja will be described as an example, but the first imaging system 1Ia (see FIG. 13) and the second imaging are described. Even when the system 1Gb and 1Hb (see FIGS. 11 and 12) are similarly modified, the same effect can be obtained.

  As shown in FIG. 14, the first imaging system (imaging system) 1Ja captures an element image group including element images centered on a point P1. The first imaging system 1Ja replaces the first direction control lens 12Ga of the first imaging system 1Ga (see FIG. 11) with the first direction control lens 12Ja, and replaces the projection optical system 13Ga with projection optical systems 13Ja, 13Ja, 13Ja. The image sensor 14Ga, 14Ja, and 14Ja are provided instead of the image sensor 14Ga, and the light shielding means 16Ja is further added. The element image optical system array 11Ga and the field lens array 19Ga in the first imaging system 1Ja are the same as those shown in FIG.

  The first direction control lens (first direction control lens system) 12Ja controls the direction in which an element image is captured by image sensors 14Ja, 14Ja, and 14Ja described later. Here, the object side focal point of the first direction control lens 12Ja and the point P1 coincide with each other.

  The projection optical system 13Ja projects the group of element images formed on the field lens array 19Ga by the element image optical system array 11Ga onto the corresponding image sensor 14Ja. Here, the first imaging system 1Ja has three projection optical systems 13Ja, 13Ja, and 13Ja. Each projection optical system 13Ja corresponds to a plurality of element image optical systems 111Ga, 111Ga,... And a plurality of field lenses 191Ga, 191Ga,. Then, a plurality of element images formed by the corresponding element image optical systems 111Ga, 111Ga,... Are projected onto the corresponding image sensor 14Ga.

  Here, the projection optical system 13Ja includes two convex lenses 131Ja and 132Ja, and forms an afocal optical system. The two convex lenses 131Ja and 132Ja are arranged in the direction of the optical axis with a light shielding means 16Ja to be described later interposed therebetween by the sum of the focal lengths of the two convex lenses 131Ja and 132Ja. Note that the projection optical system 13Ja may be composed of convex lenses 131Ja and 132Ja having the same focal length, or the convex lens 132Ja may have a shorter focal length than the convex lens 131Ja. At this time, a plurality of element images with reduced lateral magnifications are projected onto each image sensor 14Ja.

  The light shielding unit 16Ja has openings 161Ja, 161Ja, and 161Ja, and shields light other than light passing through the openings. This light shielding means 16Ja is provided between the two convex lenses 131Ja and 132Ja at a position away from the convex lens 131Ja in the optical axis direction by the focal length of the convex lens 131Ja, and on the optical axes of the projection optical systems 13Ja, 13Ja, and 13Ja. Openings 161Ja, 161Ja, and 161Ja are provided.

  Light parallel to the optical axis incident on the convex lens 131Ja converges at the center of the opening 161Ja. Therefore, a plurality of element images centered on light that has been converted into light parallel to the optical axis by the first direction control lens 12Ja through the point P1, through the principal points of the element image optical system 111Ga and the field lens 191Ga. The light passes through each corresponding opening 161Ja, enters the convex lens 132Ja, and is projected onto the corresponding image sensor 14Ja. The first imaging system 1Ja may not include the light shielding unit 16Ja.

  The imaging element 14Ja captures a plurality of element images projected by the projection optical system 13Ja. Here, the projection optical system 13Ja projects a part of the plurality of element images constituting the element image group generated by the element image optical system array 11Ga onto the corresponding image sensor 14Ja. Accordingly, the first imaging system 1Ja can capture one elemental image group by the plurality of imaging elements 14Ja, 14Ja, and 14Ja. Thus, by picking up an image with the plurality of image pickup devices 14Ja, 14Ja, and 14Ja, the resolution of the element image group to be picked up can be improved. Note that the same number of elemental image optical systems 111Ga and field lenses 191Ga and the same number of projection optical systems 13Ja and imaging elements 14Ja may be arranged, and the number is not limited to the above.

[Configuration of Display Device (First Embodiment)]
Next, with reference to FIG. 15, the structure of the display apparatus 5 which is 1st embodiment of this invention is demonstrated. FIG. 15 is a schematic diagram illustrating the configuration of the display device according to the first embodiment of the present invention, (a) is a schematic diagram illustrating the configuration of the display device, and (b) is a three-dimensional view in the other direction. It is the schematic diagram which showed the structure of the display apparatus when displaying an image. Here, the optical paths of the parallel light passing through the principal points of the elemental image optical system 111 at both ends and the light passing through the principal point of the central elemental image optical system 111 are schematically illustrated. In addition, here, directions D1 ′ and D2 ′ (a direction opposite to the traveling direction of light) observed by the observer on the display device 5 are illustrated by arrows.

  The display device (stereoscopic image display device) 5 displays a stereoscopic image (not shown) indicated by the element image group. The display device 5 includes a display element 54 instead of the image sensor 14 of the imaging device 1 (see FIG. 1). Since the configuration other than the display element 54 in the display device 5 is the same as that shown in FIG. 1, the same reference numerals are given and the description thereof is omitted.

  The display element (display means) 54 displays an element image group input from the outside. The display element 54 emits light from a backlight (not shown) installed on the back surface of the display element (the surface opposite to the side where the observer is present). The element image group displayed here is an image captured by the imaging device 1 or generated by a computer (not shown). If the spatial position information of the subject (not shown) is known, the imaging devices 1 ′, 1A to 1G (see FIGS. 2 to 11) and the conventional imaging as shown in FIG. By tracing the optical path in the apparatus 100 backward from the subject, it is possible to generate an elemental image group of the subject by a computer.

  Here, the first direction control lens 12 is moved in a direction orthogonal to the optical axis by a first direction control lens moving means (direction changing means) (not shown), and the first direction control lens 12 is moved according to the position of the first direction control lens 12. A group of element images taken in the direction connecting the first direction control lens 12 and the principal point of the projection optical system 13 (the direction opposite to D1 ′ or D2 ′) is displayed on the display element 54. The light from the element image group displayed here is incident on the first direction control lens 12. This light then reverses the optical path from the subject to the light from the subject passing through the elemental image optical system array 11 and reaching the imaging device 14 by the imaging device 1. Thereby, the display device 5 can reproduce a stereoscopic image (not shown) of the subject.

  When the observer views the display device 5 from a direction within a predetermined angular range R1 (viewing zone) centered on the optical axis direction [direction D1 ′ in FIG. 15A], the first direction control is performed. A stereoscopic image indicated by the group of element images displayed when the principal point of the lens 12 is on the optical axis is observed. When the observer views the display device 5 from a direction within a predetermined angle range R2 (viewing zone) with the direction D2 ′ [see FIG. 15B] as the center, the first direction control lens 12 A stereoscopic image indicated by the group of element images displayed when the principal point is on the left side of the optical axis is observed. Thus, according to the display device 5 of the present invention, a stereoscopic image can be displayed with respect to a direction within a predetermined angle range centered on a plurality of directions, and a predetermined angle centered on one direction. Compared with a conventional IP display device that displays a stereoscopic image only in a direction within the range, information on a wide range of subjects can be displayed over a wide range.

  The first direction control lens 12 of the display device 5 may be moved to three or more different positions by a first direction control lens moving unit (not shown). Thereby, a three-dimensional image can be displayed in a predetermined angle range of three or more directions. Further, the first direction control lens 12 is moved by the first direction control lens moving means to a position where the direction of the straight line passing through the principal point of the projection optical system 13 and the principal point of the first direction control lens 12 does not match. It only has to be done.

  Similarly, a display device (not shown) provided with a display element (not shown) instead of the imaging elements 14, 14A, 14Ca, 14Cb of the imaging devices 1 ′, 1A to 1D (see FIGS. 2 to 6), By inputting an element image group captured by the imaging devices 1 ′, 1A to 1D (see FIGS. 2 to 6) or an element image group generated by a computer (not shown), the element image group The displayed stereoscopic image (not shown) can be displayed in a plurality of directions.

[Configuration of Display Device (Second Embodiment)]
Next, with reference to FIG. 16, the structure of the display apparatus 5E which is 2nd embodiment of this invention is demonstrated. FIG. 16 is a schematic diagram showing the configuration of the display device according to the second embodiment of the present invention, (a) is a schematic diagram showing the configuration of the display device, and (b) is a three-dimensional view in the other direction. It is the schematic diagram which showed the structure of the display apparatus when displaying an image. Here, the optical path of light passing through the openings 16Ea and 16Eb is schematically illustrated.

  The display device (stereoscopic image display device) 5E is a three-dimensional image (not shown) indicated by an element image group captured by the imaging device 1E (see FIG. 7) or an element image group generated by a computer (not shown). )). The display device 5E includes a display element 54E instead of the image sensor 14E of the imaging device 1E. The display element 54E in the display device 5E is the same as the display element 54 of the display device 5 shown in FIG. 15, and the configuration other than the display element 54E in the display device 5E is the same as that shown in FIG. Therefore, explanation is omitted.

  Here, the openings 16Ea and 16Eb are alternately opened. Depending on which opening (16Ea or 16Eb) is open, the first direction control lens 12D at this time and the opening (16Ea or 16Eb) are opened. A group of element images obtained by photographing the connecting direction (the reverse direction of D1 ′ or D2 ′) is displayed on the display element 54E.

  When the observer views the display device 5E from a direction within a predetermined angular range (viewing zone) centered on the optical axis direction [direction D1 ′ in FIG. 16A], the opening 16Ea is opened. A three-dimensional image indicated by the element image group displayed when the user is on is observed. Further, when the observer views the display device 5E from a direction within a predetermined angular range (viewing zone) centered on the direction D2 ′ [FIG. 16B], the display is made when the opening 16Eb is open. A stereoscopic image indicated by the grouped element images is observed. As described above, according to the display device 5E of the present invention, a stereoscopic image can be displayed in a direction within a predetermined angle range centered on a plurality of directions, compared to a conventional IP display device. Information on a wide range of subjects can be displayed over a wide range.

  The light shielding means 16E of the display device 5E may have openings (not shown) at three or more different positions. Furthermore, the opening (not shown) of the light shielding means 16E may be provided at a position where the direction of the straight line passing through the center of the opening and the principal point of the first direction control lens 12D does not coincide.

  Similarly, the imaging device 1F, 1F is replaced with a display device (not shown) provided with a display element (not shown) instead of the imaging device 14F of the imaging device 1F, 1F ′, 1F ″ (see FIGS. 8 to 10). By inputting an element image group captured by '1F "(see FIGS. 8 to 10) or an element image group generated by a computer (not shown), a stereoscopic image shown by the element image group is input. (Not shown) can be displayed for multiple directions.

[Configuration of Display Device (Third Embodiment)]
Next, with reference to FIG. 17, the structure of the display apparatus 5G which is 3rd embodiment of this invention is demonstrated. FIG. 17 is a schematic diagram showing a configuration of a display device according to the third embodiment of the present invention. Here, the optical path of light passing through the principal points of the projection optical systems 13Ga and 13Gb and the principal points of the element image optical systems 111Ga and 111Gb of the element image optical system arrays 11Ga and 11Gb is schematically illustrated.

  The display device (stereoscopic image display device) 5G is a stereoscopic image (not shown) indicated by an element image group captured by the imaging device 1G (see FIG. 11) or an element image group generated by a computer (not shown). )). The display device 5G includes a half mirror 20G, a first display system (display system) 5Ga, and a second display system (display system) 5Gb. The display device 54Ga replaces the image pickup devices 14Ga and 14Gb of the image pickup device 1G. 54 Gb. The display elements 54Ga and 54Gb in the display device 5G are the same as the display elements 54 in the display device 5 shown in FIG. 15, and the configuration other than the display elements 54Ga and 54Gb in the display device 5E is that shown in FIG. Since this is the same, the description thereof is omitted. Here, the half mirror (light integrating means) 20G reflects a part of the light from the first display system 5Ga and transmits the rest, and reflects a part of the light from the second display system 5Gb to remain. Transparent. Then, the reflected light of the first display system 5Ga and the transmitted light of the second display system 5Gb are emitted in the direction of the observer (not shown).

  When the observer views the display device 5G from a position around the point P1, the stereoscopic image indicated by the first display system 5Ga is observed. Further, when the observer views the display device 5G from a position around the point P2, the stereoscopic image indicated by the second display system 5Gb is observed. As described above, according to the display device 5G of the present invention, a stereoscopic image that can be observed from a plurality of positions can be displayed, and information on a wide range of subjects can be displayed in a wide range compared to a conventional IP display device. Can be displayed.

  Similarly, an imaging device (not shown) in which the first imaging system 1Ga of the imaging device 1G is the first imaging system 1Ia, 1Ja, or an imaging device (not shown) in which the second imaging system 1Gb is the second imaging system 1Hb. ) Generated by a group of element images captured by these imaging devices or a computer (not shown) on a display device (not shown) provided with a display element (not shown) instead of the imaging devices 14Ga and 14Hb. By inputting the grouped element image group, a three-dimensional image (not shown) indicated by the element image group can be displayed at a plurality of positions.

[Configuration of Display Device (Fourth Embodiment)]
Next, the configuration of a display device 5K according to the fourth embodiment of the present invention will be described with reference to FIG. FIG. 18 is a schematic diagram illustrating the configuration of a display device according to a fourth embodiment of the present invention, (a) is a schematic diagram illustrating the configuration of the display device, and (b) is a three-dimensional view in another direction. It is the schematic diagram which showed the structure of the display apparatus when displaying an image. Here, the optical path of the light emitted from the openings 16Ea and 16Eb is schematically illustrated.

  The display device (stereoscopic image display device) 5K is a three-dimensional image (not shown) represented by an element image group captured by the imaging device 1E (see FIG. 7) or an element image group generated by a computer (not shown). )). The display device 5K does not include the second direction control lens 15E, the third direction control lens 18E, and the projection optical system 13E of the display device 5E (see FIG. 16), and includes a display element 54K instead of the display element 54E. Furthermore, a backlight 61K is provided. The element image optical system array 11, the first direction control lens 12D, and the light shielding means 16E in the display device 5K are the same as those shown in FIG.

  The display element (display means) 54K displays an element image group input from the outside. Here, the display element 54K is provided adjacent to the front side (observer side) of the first direction control lens 12D, and the element image displayed by transmitting light from the first direction control lens 12D is transmitted. A group of light is emitted.

  The backlight 61K is a light source of the display element 54K. The backlight 61K is provided adjacent to the back surface of the light shielding means 16E, and light from the backlight 61K other than the light passing through the open opening (16Ea or 16Eb) is shielded by the light shielding means 16E. Therefore, the backlight 61K and the light shielding means 16E having the openings 16Ea and 16Eb are in the same state as when a point light source is installed at the positions of the openings 16Ea and 16Eb. Since the first direction control lens 12D is installed at a position separated from the light shielding means 16E by the focal length of the first direction control lens 12D in the optical axis direction, the light passing through the opening 16Ea is in the first direction. The light is converted into light parallel to the optical axis by the control lens 12D, and the light passing through the opening 16Eb is converted into parallel light in the direction opposite to the direction D2 ′.

  Here, the openings 16Ea and 16Eb are alternately opened, and depending on which opening (16Ea or 16Eb) is open, the principal point of the first direction control lens 12D and the opening (16Ea or 16Eb) at this time ) Are displayed on the display element 54K.

  When the observer views the display device 5K from a direction within a predetermined angular range (viewing zone) centered on the optical axis direction [direction D1 ′ in FIG. 18A], the opening 16Ea opens. A three-dimensional image indicated by the element image group displayed when the user is on is observed. Further, when the observer views the display device 5K from a direction within a predetermined angle range (viewing zone) centered on the direction D2 ′ [FIG. 18B], the display is made when the opening 16Eb is open. A stereoscopic image indicated by the grouped element images is observed. Thus, according to the display device 5K of the present invention, a stereoscopic image can be displayed in a direction within a predetermined angle range centered on a plurality of directions, compared to a conventional IP display device. Information on a wide range of subjects can be displayed over a wide range.

  Instead of installing the backlight 61K and the light shielding means 16E, a point light source (not shown) that alternately turns on may be installed at the positions of the openings 16Ea and 16Eb. Further, the light shielding means 16E of the display device 5K may have openings (not shown) at three or more different positions. Furthermore, the opening (not shown) of the light shielding means 16E may be provided at a position where the direction of the straight line passing through the center of the opening and the principal point of the first direction control lens 12D does not coincide.

  Further, as shown in FIG. 19A, the first direction control lens (first direction control lens system) 12D ′ of the display device 5K ′ is connected to the first direction control lens 12D from the light shielding means 16E in the optical axis direction. It may be installed at a position farther than the focal length of '. FIG. 19 is a schematic diagram showing the configuration of a modification of the display device according to the fourth embodiment of the present invention, (a) is a schematic diagram showing the configuration of the display device, and (b) is another point. It is the schematic diagram which showed the structure of the display apparatus when displaying a three-dimensional image in the predetermined range centering on.

  As shown in FIG. 19A, when the opening 16Ea is open and the opening 16Eb is closed, the first direction control lens 12D ′ converts the light from the opening 16Ea into the first direction control. With respect to the lens 12D ′, the light converges to a point P1 located at a conjugate position with the center of the opening 16Ea. Then, this light is incident on the display element 54K, and the light of the element image group is emitted from the display element 54K in the direction of convergence at the point P1. Therefore, the display device 5 </ b> K ′ can display a stereoscopic image to an observer around the point P <b> 1 by the element image optical system array 11.

  As shown in FIG. 19B, when the opening 16Ea is closed and the opening 16Eb is open, the first direction control lens 12D ′ uses the first direction control lens 12Eb for the light from the opening 16Eb. With respect to the lens 12D ′, the light converges to a point P2 at a position conjugate with the center of the opening 16Eb. Then, this light is incident on the display element 54K, and the light of the element image group is emitted from the display element 54K in the direction of convergence at the point P1. Therefore, the display device 5 </ b> K ′ can display a stereoscopic image to the observer around the point P <b> 2 by the element image optical system array 11. In this way, the display device 5K ′ can display a stereoscopic image over a predetermined range centered on the plurality of points P1 and P2.

[Configuration of Display Device (Modification of Fourth Embodiment)]
Next, with reference to FIG. 20, the structure of another modification of the display device 5L according to the fourth embodiment of the present invention will be described. FIG. 20 is a schematic diagram showing the configuration of another modification of the display device according to the fourth embodiment of the present invention. Here, the optical path of the light emitted from the opening 16La is schematically illustrated.

  The display device (stereoscopic image display device) 5L is a stereoscopic image (not shown) represented by an element image group captured by the imaging device 1 (see FIG. 1) or an element image group generated by a computer (not shown). )). The display device 5L includes the first direction control lens 12L instead of the first direction control lens 12D of the display device 5K, and the light shielding unit 16L instead of the light shielding unit 16E. Since the configuration other than the first direction control lens 12L and the light shielding unit 16L in the display device 5L is the same as that shown in FIG. 18, the same reference numerals are given and description thereof is omitted.

  The first direction control lens (first direction control lens system) 12L controls the emission direction of light emitted from the backlight 61K and passed through an opening 16La of a light shielding unit 16L described later. Here, the light shielding means 16L is installed from the first direction control lens 12L at a position separated in the optical axis direction by the focal length of the first direction control lens 12L, and the first direction control lens 12L exits from the opening 16La. It was decided to convert light into parallel light. The first direction control lens 12L is moved by a predetermined width in a direction orthogonal to the optical axis of the first direction control lens 12L by a first direction control lens moving unit (direction changing unit) (not shown).

  The light shielding means 16L has an opening 16La, and shields light from the backlight 61K other than light passing through the opening 16La. Therefore, the light shielding unit 16L having the backlight 61K and the opening 16La is in the same state as when a point light source is installed at the position of the opening 16La.

  Here, as shown in FIG. 20A, when the opening 16La is on the optical axis of the first direction control lens 12L, the first direction control lens 12L causes the light passing through the opening 16La to be parallel to the optical axis. Convert to light. Further, the first direction control lens moving means (not shown) moves the first direction control lens 12L by a predetermined width in the direction orthogonal to the optical axis of the first direction control lens 12L, and the opening 16La is the first direction control lens 12L. On a straight line (straight line in the direction D2 ′) passing through the principal point of the direction control lens 12L and the principal point of the element image optical system 111 on the right side of the element image optical system 111 on the optical axis of the first direction control lens 12L The first direction control lens 12L converts the light that has passed through the opening 16La into light parallel to the straight line (parallel light opposite to the direction D2 ′).

  Then, an element image group obtained by photographing the direction connecting the principal point of the first direction control lens 12L and the opening 16La (the direction opposite to D1 ′ or D2 ′) according to the position of the first direction control lens 12L is a display element 54K. Is displayed. Therefore, when the observer views the display device 5L from a direction within a predetermined angular range (viewing zone) centered on the optical axis direction [direction D1 ′ in FIG. 20A], the opening 16La is the first. A stereoscopic image indicated by the group of element images displayed when the lens is on the optical axis of the direction control lens 12L is observed. When the observer views the display device 5L from a direction within a predetermined angle range (viewing zone) centered on the direction D2 ′ [see FIG. 20B], the opening 16La is the first direction control lens. A three-dimensional image indicated by the group of element images displayed when it is on a straight line in the direction D2 ′ passing through the principal point of 12L is observed. Thus, according to the display device 5L of the present invention, a stereoscopic image can be displayed in a direction within a predetermined angle range centered on a plurality of directions, compared to a conventional IP display device. Information on a wide range of subjects can be displayed over a wide range.

  The first direction control lens 12L of the display device 5L may be moved to three or more different positions by a first direction control lens moving unit (not shown). Furthermore, if the first direction control lens 12L is moved by the first direction control lens moving means to a position where the direction of the straight line passing through the center of the opening 16La and the principal point of the first direction control lens 12L does not coincide. Good.

  A point light source (not shown) may be installed instead of the light shielding means 16L having the backlight 61K and the opening 16La. At this time, the display device 5L uses the point light source instead of the first direction control lens moving unit (direction changing unit) that moves the predetermined direction in the direction orthogonal to the optical axis of the first direction control lens 12L. Point light source moving means (direction changing means) (not shown) that moves the first direction control lens 12L by a predetermined width in a direction orthogonal to the optical axis of the first direction control lens 12L may be provided.

[Configuration of Display Device (Modification of First to Fourth Embodiments)]
Further, the image pickup devices 14, 14A, 14Ca, 14Cb, 14E, 14F, 14Ga, and 14Gb of each of the image pickup apparatuses 1, 1 ′, 1A to 1G (see FIGS. 1 to 11) are displayed on the display elements. In a display device (not shown), each element image is captured in an element image group captured by a corresponding imaging device 1, 1 ′, 1A to 1G or generated by a computer (not shown). A group of element images in which the peripheral edge is masked (information is not displayed or a black area is used) may be displayed on the display element.

  Here, with reference to FIG. 21 and FIG. 22, a case will be described in which an element image group subjected to mask processing is displayed on the display device 5M. FIG. 21 is a schematic diagram illustrating a configuration of a modification example of the display device in which the imaging element of the imaging device according to the fifth embodiment of the present invention is used as a display element. FIG. 22 is an explanatory diagram for explaining the light path from the element image group on the first direction control lens and the mask process, and (a) shows the light path from the element image group to which the mask process is not performed. (B) is a schematic diagram showing an optical path of light from an element image group subjected to mask processing, (c) is a schematic diagram showing an example of an element image group subjected to mask processing, d) is a schematic diagram showing another example of an element image group subjected to mask processing. Here, a case where the present invention is applied to the display device 5M will be described as an example, but the same effect can be obtained even when the present invention is similarly applied to a display device having another configuration of the present invention.

  The display device (stereoscopic image display device) 5M reproduces a stereoscopic image (not shown) indicated by the element image group. The display device 5M includes display elements 54Ca and 54Cb instead of the imaging elements 14Ca and 14Cb of the imaging device 1D (see FIG. 6), and a first direction control lens 12D ′ instead of the first direction control lens 12D. . The display elements 54Ca and 54Cb in the display device 5M are the same as the display elements 54 in the display device 5 shown in FIG. 15, and the first direction control lens 12D ′ in the display device 5E has the imaging function shown in FIG. Since it is the same as the first direction control lens 12D ′ of the apparatus 1F ′, the description thereof is omitted. Here, the element image optical system array 11 of the display device 5M is configured by nine element image optical systems 111a to 111i in the horizontal direction.

  The element image group displayed here is an element image group imaged by an imaging device (not shown) in which the display elements 54Ca and 54Cb of the display device 5M are replaced with imaging elements 14Ca and 14Cb (see FIG. 6), or Generated by a computer (not shown). If the spatial position information of the subject (not shown) is known, the imaging devices 1, 1A to 1G (see FIGS. 1 to 11), and a conventional imaging device as shown in FIG. By tracing the optical path at 100 backward from the subject, a group of element images of the subject can be generated by a computer.

  The display device 5M can display a stereoscopic image indicated by the element image group displayed on the display element 54Ca to an observer around the point P1, and the element image group displayed on the display element 54Cb. The displayed stereoscopic image can be displayed to an observer around the point P2. In this way, the display device 5M can display a stereoscopic image over a predetermined range centered on the plurality of points P1 and P2.

  Here, for example, the element image group displayed on the display element 54Ca is imaged between the field lens 17Da and the projection optical system 13Da, and then imaged on the first direction control lens 12D '. Then, light from a certain point P5 on the display element 54Ca is converged to one point on the first direction control lens 12D ', and then diffused within the range of the angle R3 and enters the elemental image optical system array 11.

Here, with reference to FIG. 22A, a case where an element image group that has not been subjected to mask processing is displayed on the display element 54Ca (see FIG. 21) will be described. Here, the hatched area in FIG. 22A schematically shows element images g _{a to} g _i formed on the first direction control lens 12D ′ (see FIG. 21). When an element image group that has not been subjected to mask processing is displayed on the display element 54Ca (see FIG. 21), the element image group g (element images g _{a to} g _i ) is formed on the first direction control lens 12D ′. The light from the imaged element image group g enters the element image optical system array 11. For example, on the element image g _e, the light from the pixel p1 adjacent to the element image g _f, to spread at an angle R3 after passing through the first directional control lens 12D ', the element corresponding to the element image g _e The light enters the image optical system 111e and the adjacent element image optical system 111f. Thus, the light from the pixels in the vicinity (periphery) of the boundaries between the element images g _{a to} g _i is incident on the element image optical systems 111a to 111i adjacent to the corresponding element image optical systems 111a to 111i. This is an obstacle when generating a stereoscopic image.

Therefore, by preliminarily masking the peripheral pixels at the positions where light enters the adjacent element image optical systems 111a to 111i, it is possible to prevent the light from entering the adjacent element image optical systems 111a to 111i. . For example, in FIG. 22B, the display element 54Ca (see FIG. 21) is formed with a mask area m indicated by a white area near the boundary between the element images g ′ _{a to} g ′ _i (shaded portions). When the image group g ′ is displayed, the element image group g ′ forms an image on the first direction control lens 12D ′. The element image g 'on _e, even light from the pixel p'1 adjacent to the mask region m, the first direction control lens 12D' will be spread at an angle R3 after passing through the, amount corresponding width of the diffusion since the mask region m is formed, the light is incident only on the element image optical system 111e corresponding to the element image g _'e. In this way, by masking the vicinity of the boundary of each element image g _'a ~g' _i (periphery), from each of the element image g _'a ~g' _i, corresponding elements picture optical system 111a~111i It is possible to prevent light from entering the elemental image optical systems 111a to 111i adjacent to.

  At this time, an element image group (not shown) displayed on the display element 54Cb is also formed on the first direction control lens 12D 'shown in FIG. In this element image group, information of a subject photographed in a photographing direction different from that of the element image group g ′ (see FIG. 22) displayed on the display element 54Ca can be recorded, and therefore displayed on the display element 54Cb. The element image group can present information corresponding to the information recorded in the masked area m (see FIG. 22) of the element image group g ′. In this way, the display device 5M can continuously display a stereoscopic image of the subject according to the position even if the observer moves the observation position.

As shown in FIG. 22C, the shape of the element images g ′ _{a to} g ′ _i may be rectangular, and a mask that masks the peripheral portions of the rectangular element images g ′ _{a to} g ′ _i. The region m may be formed. Further, as shown in FIG. 22D, the shape of the element images g ′ _{a to} g ′ _i may be circular, and a mask in which the peripheral portions of the circular element images g ′ _{a to} g ′ _i are masked. The region m may be formed. Then, this masking process may be performed when the element image group is captured, or may be performed on the element image group after imaging. For example, the mask region may be formed by performing image processing on the element image group after imaging. Moreover, it is good also as providing the mask means which masks a part of image pick-up element adjacent to the image pick-up element of an image pick-up device (not shown) at the time of image pick-up, and when displaying, display element 54Ca of the display apparatus 5M , 54Cb may be provided adjacent to the display elements 54Ca, 54Cb.

1A is a schematic diagram illustrating a configuration of an imaging apparatus according to a first embodiment of the present invention, FIG. 3A is a schematic diagram illustrating a configuration of the imaging apparatus, and FIG. 3B is an imaging when imaging in another direction. It is the schematic diagram which showed the structure of the apparatus. The schematic diagram which showed the structure of the modification of the imaging device which is 1st embodiment of this invention, (a) is the schematic diagram which showed the structure of the imaging device, (b) is centering on other points. It is the schematic diagram which showed the structure of the imaging device when imaging. Schematic diagram showing the configuration of the imaging device according to the second embodiment of the present invention, (a) is a schematic diagram showing the configuration of the imaging device, (b) is an imaging when imaging in another direction It is the schematic diagram which showed the structure of the apparatus. Schematic diagram showing the configuration of the imaging device according to the third embodiment of the present invention, (a) is a schematic diagram showing the configuration of the imaging device, (b) is an imaging when imaging in another direction It is the schematic diagram which showed the structure of the apparatus. It is the schematic diagram which showed the structure of the imaging device which is the 4th embodiment of this invention. It is the schematic diagram which showed the structure of the imaging device which is the 5th Embodiment of this invention. Schematic diagram illustrating the configuration of the imaging apparatus according to the sixth embodiment of the present invention, (a) is a schematic diagram illustrating the configuration of the imaging apparatus, and (b) is imaging when imaging in another direction. It is the schematic diagram which showed the structure of the apparatus. It is the schematic diagram which showed the structure of the imaging device which is the 7th Embodiment of this invention. It is the schematic diagram which showed the structure of the modification of the imaging device which is the 7th Embodiment of this invention. It is the schematic diagram which showed the structure of the other modification of the imaging device which is the 7th Embodiment of this invention. It is the schematic diagram which showed the structure of the imaging device which is the 8th Embodiment of this invention. It is the schematic diagram which showed the structure of the 2nd imaging system of the imaging device which is the 9th embodiment of this invention. It is the schematic diagram which showed the structure of the modification of the 1st imaging system of 8th Embodiment of this invention. It is the schematic diagram which showed the structure of the other modification of the 1st imaging system of 8th Embodiment of this invention. The schematic diagram which showed the structure of the display apparatus which is 1st embodiment of this invention, (a) is the schematic diagram which showed the structure of the display apparatus, (b) displays a stereo image in another direction. It is the schematic diagram which showed the structure of the display apparatus at the time. The schematic diagram which showed the structure of the display apparatus which is 2nd embodiment of this invention, (a) is the schematic diagram which showed the structure of the display apparatus, (b) displays a stereo image in another direction. It is the schematic diagram which showed the structure of the display apparatus at the time. It is the schematic diagram which showed the structure of the display apparatus which is 3rd embodiment of this invention. The schematic diagram which showed the structure of the display apparatus which is the 4th embodiment of this invention, (a) is the schematic diagram which showed the structure of the display apparatus, (b) displays a stereo image in another direction. It is the schematic diagram which showed the structure of the display apparatus at the time. The schematic diagram which showed the structure of the modification of the display apparatus of 4th Embodiment of this invention, (a) is the schematic diagram which showed the structure of the display apparatus, (b) centered on other points. It is the schematic diagram which showed the structure of the display apparatus when displaying a three-dimensional image in a predetermined range. It is the schematic diagram which showed the structure of the other modification of the display apparatus which is the 4th embodiment of this invention. It is the schematic diagram which showed the structure of the modification of the display apparatus which used the image pick-up element of the image pick-up apparatus which is the 5th Embodiment of this invention as a display element. FIG. 6 is an explanatory diagram for explaining the light path and mask processing from the element image group on the first direction control lens of the display device of the present invention, and (a) shows the light path from the element image group not subjected to mask processing. FIG. 4B is a schematic diagram illustrating an optical path of light from an element image group subjected to mask processing, and FIG. 5C is a schematic diagram illustrating an example of an element image group subjected to mask processing. (D) is the schematic diagram which showed the other example of the element image group which performed the mask process. An explanatory diagram for explaining a conventional IP system, (a) is a schematic diagram showing a configuration of an IP imaging device, and (b) is a schematic diagram showing a configuration of an IP display device.

Explanation of symbols

1, 1 ′, 1A, 1B, 1C, 1D, 1E, 1F, 1F ′, 1F ″, 1G, 1H imaging device (element image group imaging device)
1Ga, 1Ia, 1Ja First imaging system (imaging system)
1Gb, 1Hb Second imaging system (imaging system)
11, 11 ″, 11Ga, 11Gb, 11Ia Element image optical system array 111, 111 ″, 111Ga, 111Gb, 111Ia Element image optical system 12, 12 ′, 12B, 12D, 12D ′, 12Ga, 12Gb, 12Hb, 12Ja, 12L First direction control lens (first direction control lens system)
13, 13A, 13B, 13Ca, 13Cb, 13Da, 13Db, 13E, 13Ga, 13Gb, 13Hb, 13Ja Projection optical system 14, 14A, 14Ca, 14Cb, 14E, 14F, 14Ga, 14Gb, 14Hb, 14Ja )
15D, 15E Second direction control lens (second direction control lens system)
16D, 16D ', 16E, 16Hb, 16Ja, 16L Shading means 16Da, 16Db, 16Da', 16Db ', 16Ea, 16Eb, 161Gb, 161Hb, 161Ja, 16La Aperture 17Da, 17Db Field lens (field lens system)
18E Third direction control lens (condensing optical system)
20G half mirror (light distribution means, light integration means)
5, 5E, 5G, 5K, 5K ', 5L, 5M Display device (stereoscopic image display device)
5Ga first display system (display system)
5Gb second display system (display system)
54, 54Ca, 54Cb, 54E, 54Ga, 54Gb, 54K Display element

Claims (14)

An element image group imaging device configured to image an element image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of element images,
An element image optical system array in which a plurality of element image optical systems that form an image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system;
Light having an optical axis parallel to the optical axis of the element image optical system and passing through the principal point of the element image optical system, or light passing through the principal point of the element image optical system from a certain point on the subject side A first direction control lens system that converges any of the following:
A projection optical system that has an optical axis parallel to the optical axis of the element image optical system, is installed on an optical path of light emitted from the first direction control lens system, and projects the element image group;
Imaging means for imaging a group of element images projected by the projection optical system;
Direction changing means for moving the first direction control lens system and / or the projection optical system in a direction perpendicular to the optical axis;
An elemental image group imaging device comprising: An element image group imaging device configured to image an element image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of element images,
An element image optical system array in which a plurality of element image optical systems that form an image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system;
Light having an optical axis parallel to the optical axis of the element image optical system and passing through the principal point of the element image optical system, or light passing through the principal point of the element image optical system from a certain point on the subject side A first direction control lens system that converges any of the following:
A plurality of projection optical systems having an optical axis parallel to the optical axis of the element image optical system, installed on the optical path of the light emitted from the first direction control lens system, and projecting the element image group;
A plurality of imaging means corresponding to each of the projection optical systems, and imaging a group of element images projected by the corresponding projection optical system;
An elemental image group imaging device comprising: An element image group imaging device configured to image an element image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of element images,
An element image optical system array in which a plurality of element image optical systems that form an image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system;
Light having an optical axis parallel to the optical axis of the element image optical system and passing through the principal point of the element image optical system, or light passing through the principal point of the element image optical system from a certain point on the subject side A first direction control lens system that converges any of the following:
A light shielding unit that has a plurality of openings at positions where light from the element image group emitted from the first direction control lens system is converged, and shields light other than light passing through the openings;
A plurality of projection optical systems that have an optical axis parallel to the optical axis of the element image optical system, are installed on an optical path of light that has passed through each of the openings, and projects the element image group;
A plurality of imaging means for imaging a group of element images projected by each of the projection optical systems;
An elemental image group imaging device comprising: The light-shielding means is included inside, and has an optical axis parallel to the first direction control lens system, and light that has passed through the principal point of the first direction control lens system is parallel to the optical axis. A second direction control lens system for converting to light;
Between the second direction control lens system and the projection optical system, the light emitted from the second direction control lens system is installed on the optical axis of the projection optical system corresponding to the projection optical system. A plurality of field lens systems that transmit to the projection optical system;
The element image group imaging device according to claim 3, comprising: An element image group imaging device configured to image an element image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of element images,
An element image optical system array in which a plurality of element image optical systems that form an image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system;
Light having an optical axis parallel to the optical axis of the element image optical system and passing through the principal point of the element image optical system, or light passing through the principal point of the element image optical system from a certain point on the subject side A first direction control lens system that converges any of the following:
A light shielding unit that has a plurality of openings that can be opened and closed at a position where the light from the element image group emitted from the first direction control lens system is converged, and shields light other than the light passing through the openings;
A projection optical system that has an optical axis parallel to the optical axis of the element image optical system, is installed on an optical path of light that has passed through the first direction adjustment lens system, and projects the element image group;
Imaging means for imaging an element image group that passes through the aperture and is projected by the projection optical system;
An elemental image group imaging device comprising: An element image group imaging device configured to image an element image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of element images,
An element image optical system array in which a plurality of element image optical systems that form the image of the subject to generate the element image are arranged on the same plane orthogonal to the optical axis of the element image optical system;
Light having an optical axis parallel to the optical axis of the element image optical system and passing through the principal point of the element image optical system, or light passing through the principal point of the element image optical system from a certain point on the subject side A first direction control lens system that converges any one of
A projection optical system having an optical axis parallel to the optical axis of the element image optical system, installed on the optical path of the light emitted from the first direction control lens system, and projecting the element image group; and
A plurality of imaging systems having imaging means for imaging the elemental image group projected by the projection optical system;
Light distribution means for distributing light from the subject to the imaging system;
An elemental image group imaging device comprising: The optical axis, wherein at least one of the imaging systems has an opening at a position where light passing through the principal point of each of the elemental image optical systems is collected, and blocks light other than light passing through the opening A light shielding means provided on a plane orthogonal to
The element image group imaging apparatus according to claim 6, wherein the projection optical system converts light that has passed through the center of the opening into light that is parallel to the optical axis of the projection optical system. A stereoscopic image display device configured to display a stereoscopic image by inputting an elemental image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of elemental images,
Display means for displaying the element image group;
A projection optical system that projects the group of element images displayed by the display means;
A first direction control lens system having an optical axis parallel to the optical axis of the projection optical system, and condensing light passing through the principal point of the projection optical system, or making it parallel light;
It is installed on the optical path of the light emitted from the first direction control lens system, corresponds to each of the element images formed by the projection optical system, and emits light from the corresponding element image. An element image optical system array in which a plurality of element image optical systems for reproducing a stereoscopic image of the subject are arranged on the same plane orthogonal to the optical axis of the element image optical system;
Direction changing means for moving the first direction control lens system and / or the projection optical system in a direction perpendicular to the optical axis;
A stereoscopic image display device comprising: A stereoscopic image display device configured to display a stereoscopic image by inputting an elemental image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of elemental images,
A plurality of display means for displaying the group of element images;
A plurality of projection optical systems corresponding to each of the display means and projecting an element image group displayed by the corresponding display means;
A first direction control lens system having an optical axis parallel to the optical axis of the projection optical system, and condensing light passing through the principal point of each of the projection optical systems, or making it parallel light;
Installed on the optical path of the light emitted from the first direction control lens system, corresponds to each element image formed by each projection optical system, and emits light from the corresponding element image An element image optical system array in which a plurality of element image optical systems for reproducing a stereoscopic image of the subject are arranged on the same plane orthogonal to the optical axis of the element image optical system;
A stereoscopic image display device comprising: A stereoscopic image display device configured to display a stereoscopic image by inputting an elemental image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of elemental images,
A plurality of display means for displaying the group of element images;
A plurality of projection optical systems for projecting element image groups displayed by each of the display means;
A plurality of apertures at positions where the light from each of the projection optical systems is converged, and a light shielding means for shielding light other than the light passing through the apertures;
A first direction control lens system having an optical axis parallel to the optical axis of the projection optical system and condensing the light passing through the center of the aperture, or making it parallel light;
It is installed on the optical path of the light emitted from the first direction control lens system, corresponds to each of the element images formed by the projection optical system, and emits light from the corresponding element image. An element image optical system array in which a plurality of element image optical systems for reproducing a stereoscopic image of the subject are arranged on the same plane orthogonal to the optical axis of the element image optical system;
A stereoscopic image display device comprising: A stereoscopic image display device configured to display a stereoscopic image by inputting an elemental image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of elemental images,
Display means for displaying the element image group;
A projection optical system that projects the group of element images displayed by the display means;
A plurality of openings that can be opened and closed on an optical path of light from the display means, and a light shielding means for shielding light other than the light passing through the openings;
It has an optical axis parallel to the optical axis of the projection optical system, has a principal point at a position where the light parallel to the optical axis is converged by the projection optical system, and collects light passing through the center of the aperture. A first direction control lens system that illuminates or collimates;
It is installed on the optical path of the light emitted from the first direction control lens system, corresponds to each of the element images formed by the projection optical system, and emits light from the corresponding element image. An element image optical system array in which a plurality of element image optical systems for reproducing a stereoscopic image of the subject are arranged on the same plane orthogonal to the optical axis of the element image optical system;
A stereoscopic image display device comprising: A stereoscopic image display device configured to display a stereoscopic image by inputting an elemental image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of elemental images,
Display means for displaying the element image group;
A projection optical system that projects the group of element images displayed by the display means;
A first direction control lens system having an optical axis parallel to the optical axis of the projection optical system, and condensing light passing through the principal point of the projection optical system, or making it parallel light; and
It is installed on the optical path of the light emitted from the first direction control lens system, corresponds to each of the element images formed by the projection optical system, and emits light from the corresponding element image. An element image optical system array in which a plurality of element image optical systems for reproducing a stereoscopic image of the subject are arranged on the same plane orthogonal to the optical axis of the element image optical system;
A plurality of display systems having
Light integrating means for integrating light from the plurality of display systems;
A stereoscopic image display device comprising: A stereoscopic image display device configured to display a stereoscopic image by inputting an elemental image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of elemental images,
A plurality of point light sources that can be turned on and off,
A first direction control lens system for condensing light emitted from the point light source or making it parallel light;
A display unit installed on an optical path of light emitted from the first direction control lens system, and displaying the element image group;
It is installed on the optical path of the light emitted from the display means, corresponds to each element image displayed on the display means, and emits light from the corresponding element image to reproduce the stereoscopic image of the subject. An element image optical system array in which a plurality of element image optical systems are arranged on the same plane orthogonal to the optical axis of the element image optical system;
A stereoscopic image display device comprising: A stereoscopic image display device configured to display a stereoscopic image by inputting an elemental image group, which is an image for displaying a stereoscopic image of a subject, including a plurality of elemental images,
A point light source,
A first direction control lens system for condensing light emitted from the point light source or making it parallel light;
A display unit installed on an optical path of light emitted from the first direction control lens system, and displaying the element image group;
It is installed on the optical path of the light emitted from the display means, corresponds to each element image displayed on the display means, and emits light from the corresponding element image to reproduce the stereoscopic image of the subject. An element image optical system array in which a plurality of element image optical systems are arranged on the same plane orthogonal to the optical axis of the element image optical system;
Direction changing means for moving the first direction control lens system and / or the point light source in a direction perpendicular to the optical axis of the first direction control lens system;
A stereoscopic image display device comprising:

Images