JP2005332294A - Scan type stereoscopic image capturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To capture a stereoscopic image displayed by using a lenticular lens, a lens sheet, or the like, as digital data by using a scanner. <P>SOLUTION: The lens sheet or the lenticular lens is added to the optical system of an image scanner which captures an image by scanning of a line image sensor and a projection lens, so that the stereoscopic image can be captured as the digital data. Image data is directly printed out without postprocessing to obtain the stereoscopic image which can be displayed by using the lenticular lens or the lens sheet. This technology is implemented as a scanner exclusively for stereoscopic images and can be implemented as a stereoscopic image capturing unit which is attached to a flat bed image scanner on the market and used. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus for photographing a stereoscopic image for display using a lenticular lens, a lens sheet, or a special backlight.

  Conventionally, in order to create a stereoscopic image to be displayed using a lenticular lens, a subject is photographed using a plurality of cameras placed at a predetermined distance in the horizontal direction, and the captured images are processed. There are a method of separating and rearranging them into vertical stripes, and a method of superimposing a lenticular lens on photographic paper and projecting and printing a plurality of images taken in the same way through the lenticular lens.

In addition, there is integral photography as a method of taking a stereoscopic image displayed using a lens sheet, but in order to solve the problem of reversing perspective, it is necessary to replay the taken image and take it again. It is cumbersome and has not spread widely.
JP 2001-311909 JP 2003-307800 JP

  An object of the present invention is to realize a three-dimensional image photographing apparatus capable of directly photographing a three-dimensional image to be displayed using a lenticular lens or a lens sheet. Further, a three-dimensional image displayed by the apparatus disclosed in Japanese Patent Application Laid-Open No. 2001-311909. It is also possible to shoot directly.

  In order to solve these problems, the inventor has already proposed the methods disclosed in Japanese Patent Application Laid-Open No. 2003-307800 and Japanese Patent Application No. 2003-175775. This method showed good results especially in shooting using a silver halide photographic film with a large area, and was able to take a highly expressive 3D photograph that can display a natural 3D image, but the amount of information that can be recorded is small It was difficult to obtain sufficient image quality with a digital camera.

  In recent years, it has become common to record and manage images as digital data, and high-resolution printers suitable for printing stereoscopic images have become popular at low prices. Although it is desirable to handle 3D images as digital data, as described above, it is difficult to take practical 3D images with the current digital camera technology. Therefore, it is tedious to take a method such as converting to digital data. As a result of further investigation, a scanning stereoscopic image capturing device that captures a stereoscopic image as digital data by using an image scanner capable of capturing a larger amount of digital image data than a digital camera has been devised. Although the present invention is limited in that it is difficult to shoot a moving subject, the stereoscopic image can be enjoyed much more easily than the conventional method using silver halide photography, and a relatively small subject. This is effective when shooting.

  According to a first aspect of the present invention, there is provided a lens sheet in which concave lenses are arranged on a surface, a camera unit for projecting light transmitted through the lens sheet on a line image sensor, and the camera unit being parallel to the lens sheet. And means for moving in a direction perpendicular to the line image sensor, and scanning the camera unit with an image of a subject placed in front of the lens sheet (on the side opposite to the side where the camera unit is located) A stereoscopic image capturing device characterized by capturing.

  According to a second aspect of the present invention, there is provided a lens sheet in which convex lenses are arranged on the surface, a camera unit for projecting light transmitted through the lens sheet on a line image sensor, and the camera unit being parallel to the lens sheet. And means for moving in a direction perpendicular to the line image sensor, and scanning the camera unit with an image of a subject placed in front of the lens sheet (on the side opposite to the side where the camera unit is located) A stereoscopic image capturing device characterized by capturing.

  According to a third aspect of the present invention, a lenticular lens in which cylindrical concave lenses are arranged on the surface, a camera unit for projecting light transmitted through the lenticular lens onto a line image sensor, and the camera unit parallel to the lenticular lens And means for moving in a direction perpendicular to the line image sensor, and scans the camera unit for an image of a subject placed in front of the lenticular lens (on the side opposite to the side where the camera unit is located). The stereoscopic image capturing device is characterized in that it captures the captured image.

  According to a fourth aspect of the present invention, a lenticular lens in which cylindrical convex lenses are arranged on a surface, a camera unit for projecting light transmitted through the lenticular lens onto a line image sensor, and the camera unit parallel to the lenticular lens And means for moving in a direction perpendicular to the line image sensor, and scans the camera unit for an image of a subject placed in front of the lenticular lens (on the side opposite to the side where the camera unit is located). The stereoscopic image capturing device is characterized in that it captures the captured image.

  According to a fifth aspect of the present invention, in the apparatus according to the third to fourth aspects, when the line direction of the line image sensor is the main scanning direction and the moving direction of the camera unit is the sub scanning direction, the sub scanning direction is The cylindrical lenticular lens is parallel to an axis of a cylindrical lens, and a cylindrical concave lens is placed parallel to the main scanning direction on the camera unit side of the lenticular lens, and scans together with the camera unit. The stereoscopic image capturing device according to claim 3.

  According to a sixth aspect of the present invention, in the apparatus according to the fifth aspect, the speed of the cylindrical concave lens that scans together with the camera unit is scanned slightly slower than the camera unit within a range in which the deviation generated during the scanning is less than the lens width. The three-dimensional image capturing device according to claim 5, wherein the image is captured.

  According to a seventh aspect of the present invention, in the apparatus according to any one of the first to fifth aspects, the function of the concave lens in the direction of scanning the camera unit (sub scanning direction) in front of the lens sheet or lenticular lens, that is, on the subject side. 6. A stereoscopic image capturing device according to claim 1, wherein a cylindrical concave lens having a slab is placed.

  According to an eighth aspect of the present invention, in the apparatus according to any one of the first to fifth aspects, a convex lens is formed in front of the lens sheet or lenticular lens, that is, on the subject side, in a direction parallel to the line image sensor (main scanning direction). 6. A stereoscopic image capturing device according to claim 1, wherein a cylindrical convex lens having a function is placed.

  According to a ninth aspect of the present invention, in the apparatus according to any one of the first to fifth aspects, a convex lens is formed in a direction parallel to the line image sensor (main scanning direction) in front of the lens sheet or lenticular lens, that is, on the subject side. 6. The stereoscopic image capturing device according to claim 1, wherein a horseshoe-shaped lens having a function and having a concave lens function is placed in a scanning direction (sub-scanning direction) of the camera unit.

  According to a tenth aspect of the present invention, there is provided a lens array in which concave lenses are arranged in a line, a camera unit for projecting light transmitted through the lens array onto a line image sensor, and the camera unit together with the lens array. And means for moving in a direction perpendicular to the line image sensor, and an image of a subject placed in front of the lens array (on the side opposite to the side where the camera section is located) is converted into the lens array and the camera section. Is a three-dimensional image capturing device that scans and captures images.

  According to an eleventh aspect of the present invention, in the apparatus according to the tenth aspect, the speed of the lens array that scans together with the camera section is slightly slower than the camera section within a range in which a deviation that occurs during scanning is less than the width of the lens array. The stereoscopic image capturing device according to claim 10, wherein the image is captured by scanning.

  According to a twelfth aspect of the present invention, there is provided a lens array in which convex lenses are arranged in a line, a camera unit for projecting light transmitted through the lens array onto a line image sensor, and the camera unit together with the lens array. And means for moving in a direction perpendicular to the line image sensor, and an image of a subject placed in front of the lens array (on the side opposite to the side where the camera section is located) is converted into the lens array and the camera section. Is a three-dimensional image capturing device that scans and captures images.

  According to a thirteenth aspect of the present invention, in the apparatus according to the twelfth aspect, the speed of the lens array that scans together with the camera section is slightly higher than that of the camera section within a range in which a deviation that occurs during scanning is less than the width of the lens array. The stereoscopic image capturing device according to claim 12, wherein the image is captured by scanning.

  According to a fourteenth aspect of the present invention, there is provided a lens sheet in which concave or convex lenses are arranged on a surface of a document table of a flat bed image scanner using an optical system for reducing and projecting an image of a document on a line image sensor by a lens, or This is a stereoscopic image capturing method characterized in that a lenticular lens in which a cylindrical concave lens or a cylindrical convex lens is arranged on a surface is placed, and a subject is placed on the lens to capture an image.

  According to a fifteenth aspect of the present invention, a lens sheet in which concave or convex lenses are arranged on the surface, or a lenticular lens in which cylindrical concave lenses or cylindrical convex lenses are arranged on the surface, and a predetermined distance from the lens sheet or lenticular lens. A stereoscopic image capturing unit including a means for holding a subject and an illuminating means for illuminating the subject and capturing the stereoscopic image on a document table of a flatbed image scanner.

  According to the scanning stereoscopic image capturing device of the present invention, a conventional lenticular stereoscopic photograph that has been photographed using a plurality of cameras and further requires post-processing is captured as digital data in the same manner as an image scanner. It can be obtained by printing with a high-quality printer without processing. Further, the photographed stereoscopic image becomes a natural stereoscopic image having almost no so-called flip phenomenon in which the images are discontinuously switched depending on the viewing angle. Furthermore, stereoscopic photographs similar to integral photography can also be obtained by taking a perspective-correct image as digital data and printing it with a printer. Furthermore, according to the present invention, a three-dimensional image displayed by a device using a special backlight disclosed in Japanese Patent Laid-Open No. 2001-311909 can be captured in the same procedure.

  FIG. 1 is a perspective view showing an optical system of a stereoscopic image photographing apparatus according to claim 1 of the present invention. Each of the following embodiments represents only the optical system, and a mechanism for scanning the camera unit and a case and a structural material for housing the optical system are omitted. This optical system includes a lens sheet 1 in which a large number of concave lenses are formed on one side with no gaps, and a camera unit including a projection lens 2 and a line image sensor 3. Here, if the line image sensor 3 is replaced with a planar imaging means, it becomes the same as the stereoscopic image photographing apparatus disclosed in Japanese Patent Application Laid-Open No. 2003-307800. Therefore, a stereoscopic image is photographed on the same principle as the stereoscopic image photographing apparatus. I understand that I can do it. In the apparatus of FIG. 1, the light from the subject 4 passes through the lens sheet 1 and is projected onto the line image sensor 3 by the projection lens 2, and the output is AD-converted to digital data. Further, the camera unit moves in the direction indicated by the arrow, captures the transmitted light data so as to scan the entire surface of the lens sheet 1, and completes planar image data. The number of pixels of the image data acquired in this way can greatly exceed the limit of the number of pixels of the planar image sensor.

  The lens sheet 1 in the apparatus of claim 1 has a large number of concave lenses arranged on one side as shown in FIG. 2 (a). A stereoscopic image obtained by printing out the image data acquired at this time is shown in FIG. As shown, the lens sheet 6 can be displayed on the stereoscopic image 5 with a stereoscopic effect.

  The scanning stereoscopic image capturing device according to claim 2 uses a lens sheet in which a number of convex lenses are formed on one side as shown in FIG. 2B instead of the lens sheet 1 in the same device as in FIG. To do. A stereoscopic image obtained by printing out the image data acquired at this time can be displayed as a correct stereoscopic image by a display device using a backlight described in JP-A-2001-311909.

  In the scanning type three-dimensional image capturing device according to claim 3, a lenticular lens in which a number of cylindrical concave lenses are arranged on one side as shown in FIG. use. A stereoscopic image obtained by printing out the image data acquired at this time can be displayed with a correct stereoscopic effect by superimposing the lenticular lens 8 on the stereoscopic image 7 as shown in FIG.

  In the scanning stereoscopic image capturing device according to claim 4, a lenticular lens in which a large number of cylindrical convex lenses are arranged on one side as shown in FIG. 3 (d) instead of the lens sheet 1 in the same device as in FIG. use. A stereoscopic image obtained by printing out the image data acquired at this time can be displayed as a correct stereoscopic image by a display device using a backlight described in JP-A-2001-311909.

  5. The stereoscopic image capturing device according to claim 3, wherein when the line direction of the line image sensor is a main scanning direction and the moving direction of the camera unit is a sub-scanning direction, the axis of the cylindrical lens constituting the lenticular lens is the main scanning direction. It is preferable to be parallel to the direction or parallel to the sub-scanning direction. This is because the optical properties of the main scanning direction and the sub-scanning direction are different, and the reading magnification of the obtained image does not match exactly in both orthogonal directions, and the lenticular lens is inclined obliquely with respect to these directions. This is because there is a risk of inconvenience when installed.

  In the apparatus of claim 3, the projection lens 2 may be adjusted so that the focal plane of the projection lens 2 is positioned slightly closer to the subject side than the lenticular lens. In the apparatus of claim 4, the focal plane of the projection lens 2 is smaller than that of the lenticular lens. Adjustment may be made so that it is slightly positioned on the camera unit side. At this time, the focusing surface is in front of and behind the lenticular lens in the direction parallel to the cylindrical lens constituting the lenticular lens, and does not match the position of the subject. When the subject is placed near the lenticular lens, it is possible to obtain a good stereoscopic image using the depth of focus of the optical system, but conversely, when the subject is placed away from the lenticular lens, the focal point is obtained. It becomes difficult to cover with depth.

  FIG. 9 shows an embodiment of a stereoscopic image capturing device according to claim 5. In this apparatus, the axis of the cylindrical lens constituting the lenticular lens 12 is set parallel to the sub-scanning direction, and the cylindrical concave lens 13 parallel to the main scanning direction is placed in front of the lenticular lens 12 so that the focusing surface for imaging in the sub-scanning direction is placed. The position is moved to the subject 4 side. The cylindrical concave lens 13 is scanned together with the camera unit. According to this apparatus, good image data can be acquired even for a subject placed away from the lenticular lens 12.

  In the scanning stereoscopic image capturing device according to any one of claims 1 to 5, there is a difference in optical function between the main scanning direction and the sub-scanning direction as described above, and the acquired image is projected in the main scanning direction. An image with the viewpoint of the position of the lens 2 at infinity in the sub-scanning direction is obtained. Although this is not a fatal problem, the vertical (y-axis) and horizontal (x-axis) printing magnification is changed when the same image is displayed on the apparatus shown in FIG. 4, and the pitch of the small image corresponding to each lens is adjusted. Thus, there are disadvantages such as having to match the lens sheet 6 and having different properties in the vertical and horizontal directions. In order to solve this problem, the scanning type three-dimensional image capturing device according to claims 7 to 9 includes a cylindrical lens or a horseshoe lens added in front of the lens sheet.

  FIG. 6 shows an embodiment of a stereoscopic image capturing apparatus according to claim 7. In this apparatus, a cylindrical concave lens 9 having a lens action in the sub-scanning direction is placed in front of the lens sheet 1 of the apparatus shown in FIG. Since the cylindrical concave lens 9 has no lens action in the main scanning direction, the function in the xz plane is the same as that of the apparatus of FIG. The function in the sub-scanning direction will be described using the yz cross-sectional view shown in FIG. First, when the optical path is analyzed on the assumption that there is no lens sheet 1, an image obtained by scanning the camera unit constituted by the projection lens 2 and the line image sensor 3 as indicated by an arrow is based on the position of the focal point of the cylindrical concave lens 9 as a viewpoint. It is understood that it is equal to the image captured. Here, when the distance between the cylindrical concave lens 9 and the projection lens 2 is f, if the focal length of the cylindrical concave lens 9 is −f, the distance between the viewpoint positions in the main scanning direction and the sub-scanning direction is the same, and the obtained image is the center. It is the same as the plane image taken with one camera fixed to the. If the lens sheet 1 is added to this, an image substantially equivalent to an image obtained by capturing a subject through the lens sheet 1 by one camera fixed at the center can be obtained. As can be easily understood, the cylindrical concave lens 9 and the lens sheet 1 can be integrated by connecting opposite surfaces.

  On the contrary, according to claim 8, the cylindrical convex lens 10 having a lens action in the main scanning direction is placed in front of the lens sheet 1 and the viewpoint position in the main scanning direction is changed as shown in the partial view on the left in FIG. This is a scanning stereoscopic image capturing device. If the focal length of the cylindrical convex lens 10 is made equal to the distance f to the projection lens 2, the viewpoint distance in the main scanning direction becomes infinite and can be made coincident with the viewpoint distance in the sub-scanning direction. Further, as shown in a partial diagram on the right side of FIG. 8, a horseshoe lens 11 having a convex lens action in the main scanning direction and a concave lens action in the sub-scanning direction is placed in front of the lens sheet 1 and a viewpoint in the main scanning direction is shown. While increasing the distance, the viewpoint distance in the sub-scanning direction can be shortened so that both viewpoint distances can be matched. Similarly to the cylindrical concave lens 9, the cylindrical convex lens 10 or the horseshoe lens 11 can be integrated by connecting surfaces facing the lens sheet 1.

  The above can be similarly applied to claims 2 to 4 using the lens sheet of FIG. 2B and the lenticular lenses of FIGS. 3C and 3D. In the apparatus using the lens sheet of FIGS. 2A and 2B, it is useful for enabling to capture a stereoscopic image equivalent to the image photographed by the fixed camera as described above. Such a stereoscopic image is compatible with the negative stipulated stereoscopic image and the positive stipulated stereoscopic image described in Japanese Patent Application Laid-Open No. 2003-307800 and Japanese Patent Application 2003-175775, and the stereoscopic image display device shown in the same patent Can also be displayed. In the apparatus using the lenticular lens shown in FIGS. 3C and 3D, the viewpoint position for determining the perspective in the vertical direction (direction parallel to the axis of the cylindrical lens constituting the lenticular lens) can be freely set. Such a stereoscopic image is compatible with the negative line drawing solid image and the positive line drawing solid image described in Japanese Patent Application Laid-Open No. 2003-307800 and Japanese Patent Application No. 2003-175775. It can also be displayed by a stereoscopic image display device shown in the patent.

  An embodiment of a scanning stereoscopic image capturing device according to claim 10 is shown in FIG. This apparatus replaces the lens sheet 1 of FIG. 1 with a lens array 14 in which concave lenses are arranged in a line, and scans in parallel with the camera unit to capture an image. The three-dimensional image obtained by this apparatus is the same as the three-dimensional image according to claim 3, but uses a lens array in which ordinary concave lenses are arranged instead of a lenticular lens in which cylindrical lenses are arranged, so that a cylindrical concave lens as in claim 5 is used. Even if the projection lens 2 is not added, a focused three-dimensional image can be obtained by placing the focusing surface of the projection lens 2 slightly closer to the subject side than the lens array 14.

  Further, in this apparatus using a lens array, the viewpoint position in the sub-scanning direction can be changed without adding a cylindrical concave lens as in the seventh aspect. FIG. 11 is a yz sectional view for explaining the principle of claim 11 and shows a state in which the optical system of FIG. 10 is scanned. As can be seen from this figure, the passing position of the light beam is continuously shifted by making the scanning speed u of the lens array 14 slightly slower than the scanning speed v of the camera unit, and the same function as the cylindrical concave lens 9 of FIG. Demonstrate. At this time, the viewpoint position in the sub-scanning direction is determined by the relationship between the speeds u and v, and when the distance between the lens array 14 and the projection lens 2 is f and the focal length of the concave lens constituting the lens array 14 is −F, u = v If it is (1-F / f), the distance between the viewpoint positions in the main scanning direction and the sub-scanning direction is the same, and the obtained image is the same as the image taken by one camera fixed at the center.

  A similar technique can be applied to the scanning stereoscopic image capturing device of claim 5. That is, in FIG. 9, if scanning is performed with the speed u of the cylindrical concave lens 13 slightly slower than the speed v of the camera unit, the same effect as that of claim 11 can be realized (claim 6).

  In the apparatus of FIG. 10, if the lens array 14 with the concave lenses is changed to a lens array with the convex lenses, an embodiment of the scanning stereoscopic image capturing apparatus according to claim 12 is obtained. The stereoscopic image obtained at this time is the same as the stereoscopic image according to the fourth aspect.

  Further, in this apparatus using a convex lens array, the viewpoint position in the sub-scanning direction can be changed without adding a cylindrical concave lens as in the seventh aspect. FIG. 12 is a yz sectional view for explaining the principle of claim 13 and shows a state in which the optical system of claim 12 using the convex lens array 15 is scanned. In this apparatus, the scanning speed t of the lens array 15 is made slightly faster than the scanning speed v of the camera unit, and the passing position of the captured light beam is shifted in the opposite direction to that in FIG. At this time, the viewpoint position in the sub-scanning direction is determined by the relationship between the speeds t and v. When the distance between the lens array 15 and the projection lens 2 is f and the focal distance of the convex lens constituting the lens array 15 is F, t = v ( 1 + F / f), the distances between the viewpoint positions in the main scanning direction and the sub-scanning direction coincide with each other, and the obtained image is the same as an image photographed by one camera fixed at the center. In this case, a focused three-dimensional image can be obtained by placing the focusing surface 16 of the projection lens 2 slightly closer to the camera unit than the lens array.

  As a simplest method for obtaining a stereoscopic image using the principle of the present invention, there is a method of using a commercially available flatbed image scanner (claim 14). As shown in FIG. 13, if the lens sheet 18 is placed on the platen of the flatbed image scanner 17 and the subject 19 is placed, a configuration equivalent to that of the scanning stereoscopic image capturing device of FIG. 1 is realized. The flatbed image scanner used here must use a projection optical system and a line image sensor, and cannot use a contact type sensor.

  As shown in a general partial cross-sectional view in FIG. 14, this type of scanner scans a projection optical system having a function similar to that in FIG. 1, which includes a projection lens 26, a line image sensor 27, and mirrors 22-25. Therefore, the same function as that of the apparatus shown in FIG. 1 can be realized simply by placing the lens sheet 18 on the document table 20. If the pitch of the lenses constituting the lens sheet 18 is fine and 1 mm or less, the area close to the lens sheet will be in a good range, so a beautiful stereoscopic image can be obtained by placing the subject 19 in close contact with the lens sheet 18. can do. In addition, since the light from the illumination light source 28 can be easily obtained when the subject is close, it is possible to obtain the necessary brightness without adding a new illumination light source.

  Here, in addition to the lens sheet 18 in which the concave lenses are arranged, a lens sheet in which convex lenses are arranged, a lenticular lens in which cylindrical concave lenses and cylindrical convex lenses are arranged can be used. When using the former two lens sheets, it is preferable to apply an antireflection coating on the lens surface in order to prevent the light from the illumination light source 28 from being reflected on each lens surface of the lens sheet and inferior image quality. On the other hand, when the latter two lenticular lenses are used, the reflection of the light source 28 is prevented by placing the lenticular lens so that the axis of each cylindrical lens of the lenticular lens is parallel to the sub-scanning direction (y direction in the figure). An anti-reflective coating is not always necessary.

  As an option of a commercially available flatbed image scanner, a stereoscopic image capturing unit having a necessary function is preferable because it is easier to use. FIG. 15 shows an example of a stereoscopic image capturing unit according to claim 15. In this unit, a lens sheet 29 in which a lens sheet in which concave lenses are arranged and a cylindrical concave lens according to claim 7 are integrally molded, a transparent plate 30 placed thereon, and a white LED 31 as an illumination light source are housed in a case 32. Yes. This unit is placed on a platen of a flatbed image scanner, and a subject is placed on the transparent plate 30 to capture a three-dimensional image. When the pitch of the constituting lenses is as large as 1 mm or more, it is preferable in terms of image quality that the subject is placed slightly away from the lens sheet. At this time, the illumination light does not reach by moving the subject away from the document table, so that it is necessary to newly add the illumination light source 31. Here, the transparent plate 30 is used as a holding means for the subject, but another method may be used, for example, affixing to a lid using a tape.

  According to the present invention, a three-dimensional image of a subject that does not move can be captured with the same ease as reading a document with a scanner, and if the obtained image data is printed out as it is with a high-quality printer, a lenticular lens You can also enjoy stereoscopic photos in a photo frame with a lens sheet. Since the stereoscopic image is captured as digital data, it can be easily managed using a personal computer, and the user can enjoy the stereoscopic photo in a self-contained manner. The present invention may be made as a dedicated scanner for stereoscopic images, or may be commercialized as a stereoscopic image capturing unit used by being attached to a commercially available flatbed image scanner.

An embodiment of a stereoscopic image capturing device according to claim 1. It is an example of the lens sheet used for the three-dimensional image capture device of Claim 1 and Claim 2. It is an example of the lens sheet used for the three-dimensional image capture device of Claim 3 and Claim 4. It is an example of the three-dimensional image display apparatus which displays the picked-up image by Claim 1. It is an example of the three-dimensional image display apparatus which displays the picked-up image by Claim 3. An embodiment of a stereoscopic image capturing device according to claim 7. It is a top view explaining the principle of the apparatus of FIG. FIG. 10 is a partial view of a stereoscopic image capturing device according to claims 8 and 9. An embodiment of a stereoscopic image capturing device according to claims 5 and 6. An embodiment of a stereoscopic image capturing device according to claims 10 and 11. It is a top view explaining the principle of Claim 11. It is a top view explaining the principle of Claim 13. An embodiment of a stereoscopic image capturing method according to claim 14. It is a fragmentary sectional view of FIG. 18 is an embodiment of a stereoscopic image capturing unit according to claim 15.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lens sheet | seat with which the concave lens was arranged ... Projection lens 3 ... Line image sensor 4 ... Subject 5 ... The thing which printed the image data 6 ... Lens sheet with the convex lens arranged 7 ... Printed image data 8 ... Lenticular lens 9 ... Cylindrical concave lens 10 ... Cylindrical convex lens 11 ... Horseshoe lens 12 ... Lenticular lens 13 in which cylindrical concave lenses are lined up · Cylindrical concave lens 14 · · · Lens array 15 with concave lenses aligned · · Lens array 16 with convex lenses aligned · Focus surface 17 of projection lens 2 · · · Flatbed image scanner 18 · · · Lenses with concave lenses aligned Sheet 19 ... Subject 20 ... Transparent plate 2 of document table DESCRIPTION OF SYMBOLS 1 ... Scanner unit 22-25 ... Mirror 26 ... Projection lens 27 ... Line image sensor 28 ... Illumination light source 29 ... Cylindrical concave lens 30 with the concave lens arranged in one side ... Transparent Plate 31 ... White LED
32 ・ ・ ・ Case

Claims (15)

A lens sheet in which concave lenses are arranged on the surface, a camera unit for projecting and transmitting the light transmitted through the lens sheet on a line image sensor, and the camera unit parallel to the lens sheet and perpendicular to the line image sensor A three-dimensional image characterized in that an image of a subject placed in front of the lens sheet (on the side opposite to the side with the camera unit) is captured by scanning the camera unit. Capture device. A lens sheet in which convex lenses are arranged on the surface, a camera unit for projecting and transmitting the light transmitted through the lens sheet on a line image sensor, and the camera unit parallel to the lens sheet and perpendicular to the line image sensor A three-dimensional image characterized in that an image of a subject placed in front of the lens sheet (on the side opposite to the side with the camera unit) is captured by scanning the camera unit. Capture device. A lenticular lens in which cylindrical concave lenses are arranged on a surface; a camera unit for projecting and photographing the transmitted light of the lenticular lens on a line image sensor; and the camera unit parallel to the lenticular lens and perpendicular to the line image sensor A three-dimensional object characterized in that an image of a subject placed in front of the lenticular lens (on the side opposite to the side where the camera unit is located) is captured by scanning the camera unit. Image capture device. A lenticular lens in which cylindrical convex lenses are arranged on a surface; a camera unit for projecting and photographing the transmitted light of the lenticular lens on a line image sensor; and the camera unit parallel to the lenticular lens and perpendicular to the line image sensor A three-dimensional object characterized in that an image of a subject placed in front of the lenticular lens (on the side opposite to the side where the camera unit is located) is captured by scanning the camera unit. Image capture device. 5. The apparatus according to claim 3, wherein when the line direction of the line image sensor is a main scanning direction and the moving direction of the camera unit is a sub scanning direction, the sub scanning direction of the cylindrical lens constituting the lenticular lens. 5. The stereoscopic image according to claim 3, wherein a cylindrical concave lens is placed parallel to the main scanning direction on the camera part side of the lenticular lens and scans together with the camera part. Capture device. 6. The apparatus according to claim 5, wherein an image is captured by scanning the cylindrical concave lens that scans together with the camera unit at a speed slightly slower than the camera unit within a range in which a deviation generated during scanning is less than the lens width. The stereoscopic image capturing device according to claim 5. 6. The apparatus according to claim 1, wherein a cylindrical concave lens having a concave lens function is placed in front of the lens sheet or lenticular lens, that is, on the subject side, in the direction of scanning the camera unit (sub scanning direction). The three-dimensional image capturing device according to any one of claims 1 to 5, characterized in that: 6. The apparatus according to claim 1, wherein a cylindrical convex lens having a convex lens function is placed in front of the lens sheet or lenticular lens, that is, on the subject side, in a direction parallel to the line image sensor (main scanning direction). The three-dimensional image capturing device according to claim 1, wherein: 6. The apparatus according to claim 1, wherein the device has a function of a convex lens in a direction parallel to the line image sensor (main scanning direction) in front of the lens sheet or lenticular lens, that is, on the subject side, and scans the camera unit. 6. The stereoscopic image capturing device according to claim 1, wherein a horseshoe-shaped lens having a function of a concave lens is placed in a direction (sub-scanning direction). A lens array in which concave lenses are arranged in a line, a camera section that projects the light transmitted through the lens array onto a line image sensor, and the camera section is perpendicular to the lens array and the line image sensor together with the lens array. And moving in the direction, and capturing an image of a subject placed in front of the lens array (on the side opposite to the side where the camera unit is located) by scanning the lens array and the camera unit. 3D image capturing device. The apparatus according to claim 10, wherein the speed of the lens array that scans with the camera unit is scanned slightly slower than the camera unit within a range in which a deviation that occurs during scanning is less than the width of the lens array, and an image is captured. The three-dimensional image capturing device according to claim 10, characterized in that: A lens array in which convex lenses are arranged in a line, a camera unit for projecting and photographing the transmitted light of the lens array on a line image sensor, and the camera unit together with the lens array and perpendicular to the lens array and the line image sensor And moving in the direction, and capturing an image of a subject placed in front of the lens array (on the side opposite to the side where the camera unit is located) by scanning the lens array and the camera unit. 3D image capturing device. 13. The apparatus according to claim 12, wherein the speed of the lens array that scans together with the camera unit is scanned slightly faster than the camera unit to capture an image within a range in which a deviation generated during scanning is less than the width of the lens array. The three-dimensional image capturing device according to claim 12, wherein: A flat sheet image scanner using an optical system that projects an image of a document on a line image sensor by a lens, and a lens sheet having concave or convex lenses arranged on the surface, or a cylindrical concave lens or cylindrical convex lens on the surface. A method for capturing a three-dimensional image, comprising placing a lenticular lens lined up with an object, and further placing a subject on the lens. A lens sheet in which concave lenses or convex lenses are arranged on the surface, or a lenticular lens in which cylindrical concave lenses or cylindrical convex lenses are arranged on the surface, and means for holding a subject at a predetermined distance from the lens sheet or lenticular lens; A three-dimensional image capturing unit having a lighting means for illuminating a subject and capturing a three-dimensional image on a document table of a flatbed image scanner.

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