WO2017221812A1 - Reflective aerial image forming element, aerial image display device, and manufacturing method for same - Google Patents

Abstract

The purpose of the present invention is to provide a manufacturing method for an aerial image display device with which the image quality of aerial images can be improved. Provided is a manufacturing method for an aerial display device, which is provided with an image display unit for displaying an image, a reflective aerial image forming element (10) for forming an aerial image corresponding to an image displayed on the image display unit, a storage unit for storing data, and an image correction unit for correcting images input to the image display unit on the basis of data stored in the storage unit, said method comprising a first measurement step for observing an aerial image of a prescribed chart (PI) and measuring position and the amount of deviation of the actual aerial image (Pz) of the chart from a correct aerial image (PI') of the chart, a first holding step for holding first data based on the position and amount of deviation in association with the reflective aerial image forming element (10) in a prescribed first recording medium, an installation step for installing the reflective aerial image forming element (10) and the image display unit in prescribed positions, and a first reading step for reading the first data corresponding to the reflective aerial image forming element (10) from the first recording medium to the storage unit.

Description

Reflective aerial imaging element, aerial image display device and manufacturing method thereof

The present invention relates to a reflective aerial imaging element that forms a real image of a projection object in the air, an aerial image display device including the reflective aerial imaging element, and a method of manufacturing the same.

A conventional aerial image display device is disclosed in Patent Document 1. This aerial image display device includes a reflective aerial imaging element and a light source. The reflection type aerial imaging element is formed by vertically stacking two flat optical elements. The optical element is formed by adhering a plurality of transparent base materials having reflective surfaces with an adhesive. The reflecting surface is formed in parallel with the thickness direction of the optical element by vapor deposition of aluminum or the like, and is arranged at a predetermined period in a direction perpendicular to the thickness direction. A reflection type aerial imaging element is formed by bonding two optical elements so that the reflection surfaces are orthogonal to each other. The light source irradiates light toward a projection object disposed below the reflective aerial imaging element.

In the aerial image display device having the above-described configuration, the projection object is disposed below the reflective aerial imaging element, the light source is turned on, and light is emitted toward the projection object. A part of the light reflected by the projection enters the lower optical element from the lower surface, and is reflected by the reflecting surface and then enters the upper optical element. The light reflected by the reflective surface of the upper optical element is emitted from the upper surface of the reflective aerial imaging element, and the real image of the projected object is obtained in the air at a position symmetrical to the projection object with respect to the reflective aerial imaging element. Imaged. Thereby, the image of the projection object is displayed in a state of floating in the air. That is, an aerial image of the projection object is displayed.

In the optical element manufacturing process, a reflective surface is formed by vapor deposition of aluminum on a surface perpendicular to the thickness direction of the transparent substrate, and a laminate is formed by laminating and bonding a plurality of transparent substrates in the thickness direction. . An optical element is obtained by cutting the laminate at a predetermined interval in a direction perpendicular to the reflecting surface. Then, a reflective aerial imaging element is obtained by bonding a pair of optical elements in the thickness direction so that the reflecting surfaces are orthogonal to each other.

Patent Document 2 discloses an aerial image display device including a large reflective aerial imaging element. This large reflective aerial imaging element is formed by joining a plurality of flat reflective aerial imaging elements at the seams of the side end faces. That is, it is formed by tiling a plurality of reflective aerial imaging elements. At this time, the plurality of upper optical elements are bonded so that the reflecting surfaces are parallel to each other, and the plurality of lower optical elements are bonded so that the reflecting surfaces are parallel to each other.

JP 2012-155345 A (6th page, 7th page, FIGS. 4 and 5) JP2013-101230A (6th page, FIG. 6)

However, according to the aerial image display devices of Patent Documents 1 and 2, there are cases in which a defect due to foreign matter contamination between the transparent substrates stacked at the time of forming the optical element or the flat accuracy of the transparent substrate occurs in the reflective aerial imaging element. is there. For this reason, there has been a problem that aerial image distortion occurs due to a defect in the reflective aerial imaging element.

Further, according to the aerial image display device of Patent Document 2, the reflection angle deviation or scattering of the reflected light of the projection object is caused by the deviation of the reflection surface between the adjacent optical elements at the joint or the gap between the reflection surfaces. This is likely to cause a shift in the imaging position.

An object of the present invention is to provide a reflective aerial imaging element and an aerial image display device capable of improving the image quality of an aerial image. Another object of the present invention is to provide these production methods.

In order to achieve the above object, the present invention provides:
An image display unit that displays an image, a reflective aerial imaging element that forms an aerial image corresponding to the image displayed on the image display unit, a storage unit that stores data, and an input to the image display unit In the manufacturing method of the aerial video display device comprising an image correction unit that corrects the obtained image based on the data stored in the storage unit,
A first measurement step of observing an aerial image of a predetermined chart and measuring an occurrence position and amount of a deviation between the chart and the aerial image of the chart;
A first holding step of holding, on a predetermined first recording medium, first data based on the position and amount of occurrence of the deviation in association with the reflective aerial imaging element;
An installation step of installing the reflective aerial imaging element and the image display unit at a predetermined position;
A first reading step of reading the first data corresponding to the reflective aerial imaging element from the first recording medium into the storage unit;
It is characterized by having.

Further, the present invention provides a method for manufacturing a reflective aerial imaging element that forms an aerial image corresponding to a projection object.
A first measurement step of observing an aerial image of a predetermined chart and measuring an occurrence position and amount of a deviation between the chart and the aerial image of the chart;
A first holding step of holding the first data based on the occurrence position and amount of the deviation on a predetermined recording medium in association with the reflective aerial imaging element.

In addition, the aerial video display device of the present invention,
An image display unit for displaying an image;
A reflective aerial imaging element that forms an aerial image corresponding to the image displayed on the image display unit;
A storage unit for storing first data based on a predetermined chart and an occurrence position and amount of a deviation between the predetermined image and the aerial image of the chart imaged by the reflective aerial imaging element;
An image correcting unit that corrects and outputs an image to be displayed on the image display unit based on the first data;
It is characterized by having.

According to the present invention, in a reflective aerial imaging element that forms an aerial image corresponding to an object to be projected, the first data is associated with first data that is acquired in advance and held on a predetermined recording medium. This is based on the occurrence position and amount of deviation between the chart of FIG.

According to the manufacturing method of the reflective aerial imaging element and the manufacturing method of the aerial image display device of the present invention, the occurrence position and amount of the deviation between the chart and the aerial image of the chart are measured, and the first position based on the occurrence position and amount of the deviation is measured. One data is stored in the first recording medium in association with the reflective aerial imaging element. Then, the first data is read into the storage unit from the first recording medium corresponding to the reflective aerial imaging element. Thereby, the input image of the image display unit is corrected by the image correction unit based on the first data, and a good aerial image with less distortion is displayed, so that the image quality of the aerial image can be improved.

Further, according to the reflective aerial imaging element and the aerial image display device of the present invention, the first data based on the position and amount of occurrence of the deviation between the chart and the aerial image of the chart is associated with the reflective aerial imaging element. Then, the image input to the image display unit is corrected based on the first data and output. Thereby, a good aerial image with little distortion is displayed, and the image quality of the aerial image can be improved.

The perspective view which shows the aerial image display apparatus of 1st Embodiment of this invention. The side view which shows the aerial image display apparatus of 1st Embodiment of this invention. The perspective view which expanded the reflection type aerial image formation element of the aerial image display device of a 1st embodiment of the present invention. The top view which shows the reflection type aerial image formation element of the aerial image display device of 1st Embodiment of this invention. The perspective view which shows the optical element used for the reflection type aerial image formation element of the aerial image display device of 1st Embodiment of this invention. The side view which expanded the adhesion part between the base materials of the optical element used for the reflection type aerial image formation element of the aerial image display device of 1st Embodiment of this invention. The block diagram which shows the structure of the aerial image display apparatus of 1st Embodiment of this invention. The top view for demonstrating the image formation of the aerial image by the aerial image display apparatus of 1st Embodiment of this invention The side view for demonstrating image formation of the aerial image by the aerial image display apparatus of 1st Embodiment of this invention The top view for demonstrating the retroreflection of the reflected light of the to-be-projected object in the reflective surface of the reflection type aerial image formation element of the aerial image display apparatus of 1st Embodiment of this invention. The side view for demonstrating the shift | offset | difference of the image formation position of the aerial image by the aerial image display device of 1st Embodiment of this invention The figure which shows image formation of the point image by the reflection type aerial image formation element of the aerial image display device of 1st Embodiment of this invention. The figure which shows an example of a deformation | transformation of the point image by the reflection type aerial imaging element of 1st Embodiment aerial image display apparatus of this invention. The figure which shows an example of the division | segmentation of the point image by the reflection type aerial imaging element of the aerial image display device of 1st Embodiment of this invention. Front view showing an aerial image formed by a reflective aerial imaging element in which foreign matter is mixed between the reflecting surface and the substrate Top view showing a reflective aerial imaging element formed by tiling Front view of aerial image formed by light passing near seam of side end face of reflective aerial imaging element formed by tiling The figure which shows the manufacturing process of the aerial image display apparatus of 1st Embodiment of this invention. The side view which shows the 1st measurement process of 1st Embodiment of this invention. The front view which shows the chart used for the 1st measurement process of 1st Embodiment of this invention. The front view which shows an example of the aerial image of the chart observed at the 1st measurement process of 1st Embodiment of this invention. The front view which shows the other example of the aerial image of the chart observed at the 1st measurement process of 1st Embodiment of this invention. The front view which shows an example of the aerial image observed at the 2nd measurement process of 1st Embodiment of this invention. The front view which shows an example of the output image on the display panel of the image display part correct | amended by the image correction part of the video display apparatus of 1st Embodiment of this invention. The front view which shows the other example of the output image on the display panel of the image display part correct | amended by the image correction part of the video display apparatus of 1st Embodiment of this invention. The front view which shows an example of the output image on the display panel of the image display part correct | amended by the image correction part of the video display apparatus of 1st Embodiment of this invention. The front view which shows the chart used for the 1st measurement process of 2nd Embodiment of this invention. The front view which shows an example of the aerial image of the chart observed at the 1st measurement process of 2nd Embodiment of this invention. The front view which shows an example of the output image on the display panel of the image display part correct | amended by the image correction part of the video display apparatus of 2nd Embodiment of this invention. The front view which shows the chart used for the 1st measurement process of 3rd Embodiment of this invention. The front view which shows an example of the aerial image of the chart observed at the 1st measurement process of 3rd Embodiment of this invention. The front view which shows an example of the output image on the display panel of the image display part correct | amended by the image correction part of the video display apparatus of 3rd Embodiment of this invention. The front view which shows the chart used for the 1st measurement process of 4th Embodiment of this invention. The front view which shows an example of the aerial image of the chart observed at the 1st measurement process of 4th Embodiment of this invention. The front view which shows an example of the output image on the display panel of the image display part correct | amended by the image correction part of the video display apparatus of 4th Embodiment of this invention. The front view which shows one chart used for the 1st measurement process of 5th Embodiment of this invention. The front view which shows the other chart used for the 1st measurement process of 5th Embodiment of this invention. The front view which shows an example of the aerial image of one chart observed at the 1st measurement process of 5th Embodiment of this invention. The front view which shows an example of the aerial image of the other chart observed at the 1st measurement process of 5th Embodiment of this invention. The front view which shows the chart used for the 1st measurement process of 6th Embodiment of this invention. The front view which shows an example of the aerial image of the chart observed at the 1st measurement process of 6th Embodiment of this invention.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a perspective view and a side view, respectively, of the aerial image display device of the first embodiment. The X direction, the Y direction, and the Z direction indicate the width direction, the thickness direction, and the depth direction of the reflective aerial imaging element 10 of the aerial image display device 1, respectively.

The aerial image display device 1 includes a reflective aerial imaging element 10 and an image display unit 20. The reflective aerial imaging element 10 is formed by juxtaposing two flat optical elements 11 in the thickness direction (Y direction), and forms an aerial image FI corresponding to the projection object OB. The lower surface of the lower optical element 11 is an incident surface 18 on which light is incident, and the upper surface of the upper optical element 11 is an output surface 19 from which light is emitted.

The image display unit 20 is disposed below the reflective aerial imaging element 10 and includes a display panel 21 and a light source (not shown). At this time, the reflective aerial imaging element 10 and the image display unit 20 are arranged at predetermined positions in the aerial image display device 1. Thereby, the positional relationship between the reflective aerial imaging element 10 and the image display unit 20 is defined.

The display panel 21 is composed of a liquid crystal display panel, for example, and displays an input image P that is a projection object OB. A light source consists of LED, for example, and radiates | emits white illumination light. The display panel 21 is arranged so that the optical axis of the light from the input image P displayed on the display panel 21 is incident on the incident surface 18 at an incident angle of about 45 °. The light source may be formed by CCFL (Cold Cathode Fluorescent Lamp).

FIG. 3 is an enlarged perspective view of the reflective aerial imaging element 10. FIG. 4 shows a plan view of the reflective aerial imaging element 10. FIG. 5 shows a perspective view of the optical element 11. In FIG. 3, an arrow Q indicates an optical path. The planar shape of the optical element 11 is formed in a substantially square shape having a side length of, for example, about 200 mm. The optical element 11 is made of a light-transmitting material, and a reflecting surface 14 parallel to the thickness direction (Y direction) is arranged in parallel at a predetermined period T (for example, 0.52 mm).

The optical element 11 is formed by adhering a plurality of transparent base materials 12 each having a reflecting surface 14 on both sides with an adhesive 13 (see FIG. 6) disposed on the reflecting surface 14. The substrate 12 is formed of a transparent resin such as an acrylic resin or glass. The adhesive 13 is made of a two-component mixed adhesive in which a main agent made of, for example, an epoxy resin or an acrylic resin and a curing agent made of, for example, a polyamide resin are mixed.

The reflective surface 14 is formed on the base material 12 by sputtering or vapor deposition of, for example, aluminum or silver.

FIG. 6 shows an enlarged side view of an adhesion portion between adjacent base materials 12. Between the adjacent base materials 12, a plurality of dot-like spacers 15 are arranged in a matrix on the reflecting surface 14 in plan view. The spacer 15 is made of, for example, an ultraviolet curable resin, and has a height H (a protrusion amount in a direction perpendicular to the reflecting surface 14) in a range of 20 μm ± 1 μm, and has a predetermined pitch E (this embodiment) in two orthogonal directions. Is 1 mm). Thereby, the film thicknesses of the layers of the adhesives 13 can be made uniform, and the plurality of reflecting surfaces 14 can be maintained parallel to each other.

In the reflective aerial imaging element 10, the two optical elements 11 are arranged in the thickness direction so that the direction in which the reflecting surface 14 of the lower optical element 11 extends and the direction in which the reflecting surface 14 of the upper optical element 11 extends are orthogonal to each other. (Y direction).

FIG. 7 is a block diagram showing the configuration of the aerial video display device 1. The aerial video display device 1 includes a control unit 100 that controls each unit. An image display unit 20, an image correction unit 40, and a storage unit 50 are connected to the control unit 100. The storage unit 50 stores a control program and various data for the aerial video display device 1. As will be described later, the data stored in the storage unit 50 includes deviation correction data (first data) based on the position and amount of deviation of the aerial image FI due to the defect DP of the reflective aerial imaging element 10, and the aerial image FI. Brightness unevenness correction data (second data) based on the occurrence position and the amount of brightness unevenness is included. The image correction unit 40 corrects and outputs the image (input image) input to the image display unit 20 based on the shift correction data and the luminance unevenness correction data.

In the aerial image display device 1 having the above configuration, when the light source of the image display unit 20 is turned on and the input image P (projected object OB) is displayed on the display panel 21, the light from the input image P is indicated by the arrow Q ( As shown in FIG. 3, the light enters the lower optical element 11 from the incident surface 18, is reflected by the reflecting surface 14 of the lower optical element 11, and then enters the upper optical element 11.

The light reflected by the reflecting surface 14 of the upper optical element 11 is emitted upward from the emission surface 19 on the upper surface of the reflective aerial imaging element 10 and is plane-symmetric with the input image P with respect to the reflective aerial imaging element 10. A real image (aerial image FI) of the input image P is formed in the air at the position. Thereby, the aerial image FI corresponding to the input image P is displayed in a state of floating in the air.

At this time, as shown in FIG. 4, the reflecting surface 14 of the optical element 11 is projected 45 onto the surface parallel to the incident surface 18 with respect to the viewing direction EL of the observer's eye EY (see FIGS. 1 and 2). When tilted, the visibility of the aerial image FI can be optimized.

Note that light incident on the adhesive 13 (see FIG. 6) between the base materials 12 of the optical element 11 at an incident angle of 45 °, for example, is reflected from the reflecting surface 14 and then emitted from the adhesive 13. As a result, the light incident on the adhesive 13 is greatly attenuated and emitted, and thus hardly contributes to the image formation of the aerial image FI. Therefore, even if the spacer 15 is arranged on the adhesive 13 between the base materials 12 of the optical element 11, there is no big trouble.

Further, if the input image P is, for example, information related to a product or the like, it is possible to advertise the product or the like using the aerial video FI. The aerial image display device 1 may be mounted on a game machine or the like.

Hereinafter, a method for forming the optical element 11 and the reflective aerial imaging element 10 will be described. Reflective surfaces 14 are formed on both sides of a rectangular thin transparent substrate (not shown) perpendicular to the thickness direction by sputtering or vapor deposition of aluminum or silver. The substrate is made of, for example, acrylic resin or glass. The reflective surface 14 may be formed only on one of the surfaces perpendicular to the thickness direction of the substrate.

Next, a plurality of substrates on which the reflection surface 14 is formed are laminated in the thickness direction via the spacers 15 to form a laminate (not shown). The laminate is immersed in a liquid adhesive 13 in a storage tank (not shown), and the adhesive 13 is filled between adjacent substrates of the laminate. Next, the laminate is pulled up from the storage tank, and the laminate is fixed by curing the adhesive 13. The material of the optical element 11 is obtained by cutting the fixed laminated body at a predetermined period using a wire saw or the like in a direction perpendicular to the reflecting surface 14. The optical element 11 is obtained by polishing a surface perpendicular to the reflection surface 14 of the material of the optical element 11. Next, the two optical elements 11 are juxtaposed in the thickness direction (Y direction) so that the directions in which the reflecting surfaces 14 extend are orthogonal to each other, and are joined with an adhesive or the like, so that the reflective aerial connection shown in FIG. An image element 10 is obtained.

8 and 9 are a top view and a side view, respectively, of the aerial image display device 1 for explaining the formation of the aerial image FI. 8 and 9, the point image PI is displayed on the display panel 21 of the image display unit 20 as the projection object OB (see FIG. 3), and the aerial image FI (see FIG. 3) including the point image PI ′ is displayed on the camera 200. The case of observing will be described.

The light beam from the point image PI displayed on the display panel 21 is reflected by the reflecting surface 14 of the reflective aerial imaging element 10, and the point image is in the plane symmetrical to the point image PI with respect to the reflective aerial imaging element 10. PI ′ is imaged. Light reflected by the reflecting surface 14 of the predetermined circular image forming region IR of the reflective aerial imaging element 10 enters the camera 200 that observes the point image PI ′.

At this time, the distance (projection amount) between the center of the image forming region IR and the point image PI ′ is Lf, the distance (observation distance) between the lens (not shown) of the camera 200 and the point image PI ′ is Lv, and the aperture of the lens. Is φ, the diameter D of the image forming region IR is calculated by the equation (1).

D = Lf × φ / Lv (1)

For example, when the pop-out amount Lf, the observation distance Lv, and the aperture φ are 300 mm, 500 mm, and 6 mm, respectively, the diameter D of the image forming region IR is 3.6 mm.

When the reflective aerial imaging element 10 is formed, a defect DP (see FIG. 2) of the reflective aerial imaging element 10 may partially occur. The defect DP is generated due to a decrease in flatness and parallelism of the reflecting surface 14 due to foreign matter mixing between the base materials 12, non-uniformity of the refractive index distribution in the base material 12, and the like. When the defect DP of the reflective aerial imaging element 10 exists, the imaging position of the light reflected on the defect DP is shifted, and the image quality of the aerial image FI (see FIG. 3) is deteriorated. Hereinafter, the image quality degradation of the aerial image FI due to the defect DP of the reflective aerial imaging element 10 will be described.

FIG. 10 shows a top view for explaining the progress of the reflected light of the point image PI (projection object OB) on the reflection surface 14 of the reflective aerial imaging element 10. A solid line indicates the reflecting surface 14 of the upper optical element 11, and a broken line indicates the reflecting surface 14 of the lower optical element 11. A two-dot chain line indicates a reflecting surface 14 ′ of the lower optical element 11 when a defect DP occurs, and the reflecting surface 14 ′ is curved in a direction orthogonal to the Y direction. An arrow R indicates a reflected ray of the point image PI reflected by the reflection surface 14 (normal reflection surface 14) having no defect DP of the reflective aerial imaging element 10, and an arrow R ′ is a reflection surface 14 ′ having the defect DP. The reflected ray of the reflected point image PI is shown.

The reflected light of the point image PI reflected by the reflecting surface 14 having no defect DP forms a point image PI ′ at a position symmetrical to the point image PI. When the image formed at this time is imaged by the camera 200 (see FIG. 8), the same point image PI ′ as the point image PI is observed as shown in FIG.

The reflected light of the point image PI reflected by the curved reflecting surface 14 ′ deviates from the reflected light of the point image PI reflected by the normal reflecting surface 14 and is emitted from the emitting surface 19. Therefore, as shown in FIG. 11, the point image Pz is formed at a position shifted from the point image PI ′. When the image at this time is picked up by the camera 200 (see FIG. 8), as shown in FIG. 13, the overlap (point image deformation) of the point image PI ′ and the point image Pz is observed. Further, when the reflection surface 14 has a large curvature, as shown in FIG. 14, the division (point image division) between the point image PI ′ and the point image Pz is observed. For this reason, the image quality of the aerial image FI deteriorates.

FIG. 15 is a front view of an aerial image FI formed by the reflective aerial imaging element 10 having a defect DP. A plurality of parallel lines are displayed on the image display unit 20 as the projection object OB. Further, a defect DP is formed due to a decrease in the flatness of the reflecting surface 14 due to foreign matter mixing between the reflecting surface 14 (see FIG. 6) and the substrate 12 (see FIG. 6). According to the figure, a deviation occurs in the portion of the reflective surface 14 of the aerial image FI where the flatness is lowered, and streaks are observed.

Also, a large reflective aerial imaging element may be formed by tiling the plurality of reflective aerial imaging elements 10. FIG. 16 shows a plan view of the tiled reflective aerial imaging element 10 ′. A plurality of reflective aerial imaging elements 10 'are joined and tiled at the joint 10b of the side end face 10a to form a large reflective aerial imaging element 10'.

FIG. 17 shows a front view of an aerial image FI imaged by the reflective aerial imaging element 10 ′ having a defect DP at the time of tiling. In the figure, an aerial image FI is formed by displaying a plurality of parallel lines as the projection object OB on the image display unit 20 and forming an image by light passing through the area surrounded by the broken line in FIG. Further, the reflection surface 14 of the adjacent reflective aerial imaging element 10 at the time of tiling is arranged so as to be shifted from the same plane, thereby forming a defect DP. According to the figure, streaks due to the displacement of the reflecting surface 14 are observed at the joint 10b.

FIG. 18 is a diagram showing a manufacturing process of the aerial image display device 1. The manufacturing process of the aerial video display device 1 includes a first measurement process, a first holding process, a second measurement process, a second holding process, an installation process, a first reading process, and a second reading process.

FIG. 19 is a side view showing the first measurement process. A display panel 21 is disposed below the reflective aerial imaging element 10 and a camera 200 is disposed above. As shown in FIG. 20, the display panel 21 displays a chart C1 composed of a plurality of black lines arranged in a grid pattern. Then, an occurrence position and an amount of deviation between the aerial image FI of the chart C1 captured by the camera 200 and the chart C1 are measured by image processing.

FIG. 21 is a front view showing an example of an aerial image FI of the chart C1 by the reflective aerial image element 10 having the defect DP (see FIG. 2). In the figure, in the region surrounded by the alternate long and short dash line, the horizontal line is curved upward and the vertical line is curved to the left due to the defect DP, and a deviation between the chart C1 and the aerial image FI of the chart C1 occurs. That is, the position Fa is imaged with a shift of ΔA and ΔB in the vertical and horizontal directions from the original image formation position Fa ′, and the shift generation position Fa and the shift amounts ΔA and ΔB are measured.

FIG. 22 is a front view showing another example of the aerial image FI of the chart C1 by the reflective aerial image element 10 having the defect DP (see FIG. 2). In the aerial image FI, a vertical line and a horizontal line are shifted due to a shift between the chart C1 and the aerial image FI of the chart C1 in a region K surrounded by a broken line in the upper right part of the boundary line S. For this reason, the position Fa of all the lattice points in the region K and the shift amounts ΔA and ΔB are measured.

Next, in the first holding step, the shift correction data (first data) based on the shift generation position Fa and the shift amounts ΔA and ΔB is associated with the reflective aerial imaging element 10 and held on a predetermined recording medium. . The recording medium is not particularly limited, and for example, paper, an optical disk, a USB memory, a server, and the like can be used.

The deviation correction data includes, for example, coordinates on the display panel 21 corresponding to the position Fa and deviation amounts ΔA and ΔB. Since the image correction unit 40 (see FIG. 7) corrects the image on the display panel 21 based on the deviation correction data, the coordinates on the display panel 21 corresponding to the position Fa and the correction amount (−ΔA, −ΔB) are used. ). The shift correction data may be the shift amount or correction amount of all grid points on the chart C1. At this time, the shift correction data holds data based on the generation position, which is a grid point with a shift amount other than zero.

Next, in the second measurement process, a plain image is displayed on the display panel 21. Then, the occurrence position and amount (luminance value) of the luminance unevenness of the aerial image FI of the plain image captured by the camera 200 are measured by image processing.

FIG. 23 is a front view showing an example of the aerial image FI at this time. Black spots are observed in the region surrounded by the alternate long and short dash line in the drawing due to the defect DP of the reflective aerial imaging element 10. Black spots occur when the reflectance of the reflective surface 14 is reduced due to peeling or oxidation due to corrosion of the reflective surface 14 when the optical element 11 is formed.

Further, as shown in FIG. 2, since the display panel 21 is inclined, the upper part of the aerial image FI has a longer optical path length than the lower part. For this reason, the brightness of the lower part gradually increases with respect to the upper part of the aerial image FI, and uneven brightness occurs in the aerial image FI. In the second measurement step, the occurrence position and amount (luminance value) of luminance unevenness on the aerial image FI are measured.

Next, in the second holding step, luminance unevenness correction data (second data) based on the occurrence position and amount of the luminance unevenness is associated with the reflective aerial imaging element 10 and held on a predetermined recording medium. The recording medium is not particularly limited, and for example, paper, an optical disk, a USB memory, a server, and the like can be used. The luminance unevenness correction data may be held in the same recording medium as the recording medium holding the deviation correction data, or the luminance unevenness correction data may be held in a different recording medium.

Next, in the installation step, the reflective aerial imaging element 10 and the image display unit 20 are fixedly attached at predetermined positions. Next, in the first reading step, deviation correction data corresponding to the reflective aerial imaging element 10 is read from the recording medium into the storage unit 50. Next, in the second reading step, luminance unevenness correction data corresponding to the reflective aerial imaging element 10 is read from the recording medium into the storage unit 50. Thus, the aerial video display device 1 shown in FIG. 1 is formed.

In the aerial video display device 1 having the above-described configuration, the image input to the image display unit 20 is corrected by the image correction unit 40 based on the deviation correction data and the luminance unevenness correction data stored in the storage unit 50 and output. At this time, the shift generation position Fa is discontinuously held as a discontinuous point on the display panel 21 in the shift correction data, but the shift amount between the adjacent generation positions Fa is interpolated by the image correction unit 40. Similarly, in the brightness unevenness correction data, the occurrence positions of brightness unevenness are held as discontinuous points on the display panel 21, but the brightness between adjacent occurrence positions is interpolated by the image correction unit 40.

FIG. 24 shows an example of the output image P ′ on the display panel 21 of the image display unit 20 corrected by the image correction unit 40. The input image of the image display unit 20 is the chart C1 (see FIG. 20), and the above-described aerial image FI in FIG. 21 is corrected. In the figure, a region surrounded by a one-dot chain line corresponds to a region surrounded by a one-dot chain line in FIG.

At this time, based on the deviation correction data stored in the storage unit 50, the output image P ′ is corrected in a direction to cancel the deviation at the position where the deviation due to the defect DP of the reflective aerial imaging element 10 occurs. That is, in the region surrounded by the one-dot chain line in FIG. 24, the vertical line and the horizontal line are curved in the opposite direction to the case of the aerial image FI in FIG. Thereby, the observer can observe the aerial image FI without distortion.

FIG. 25 shows another example of the output image P ′ on the display panel 21 of the image display unit 20 corrected by the image correction unit 40. An input image of the image display unit 20 is a chart C1 (see FIG. 20), and the aerial image FI shown in FIG. 22 is corrected. In the drawing, a region K ′ surrounded by a broken line corresponds to a broken line region R in FIG. 22.

At this time, based on the deviation correction data stored in the storage unit 50, the output image P ′ is corrected in a direction to cancel the deviation at the position where the deviation due to the defect DP of the reflective aerial imaging element 10 occurs. That is, in the region K ′ surrounded by the broken line in FIG. 25, the vertical line and the horizontal line are shifted in the opposite direction to the case of the aerial image FI in FIG. Thereby, the observer can observe the aerial image FI without distortion.

FIG. 26 shows another example of the output image P ′ on the display panel 21 of the image display unit 20 corrected by the image correction unit 40. The input image of the image display unit 20 is a plain image and corrects the aerial image FI shown in FIG. In the figure, a region surrounded by a one-dot chain line corresponds to a region surrounded by a one-dot chain line in FIG.

At this time, based on the luminance unevenness correction data stored in the storage unit 50, the output image P ′ is corrected in a direction to cancel the luminance unevenness at the position where the luminance unevenness due to the defect and arrangement of the reflective aerial imaging element 10 occurs. . That is, the luminance value of the portion corresponding to the black spot portion in FIG. 23 is high, and the luminance of the upper portion is gradually higher than the lower portion of the output image P ′. Thereby, the observer can observe the aerial image FI with reduced luminance unevenness.

According to the present embodiment, the deviation correction data (first data) based on the occurrence position Fa and the deviation amounts ΔA and ΔB between the chart C1 and the aerial image FI of the chart C1 are associated with the reflective aerial imaging element 10. Store in a storage medium. Then, the image correction unit 40 corrects and outputs the input image of the image display unit 20 based on the shift correction data. Thereby, a good aerial image FI with little distortion is observed. Therefore, the image quality of the aerial video FI can be improved.

Further, since the chart C1 is composed of a plurality of lines arranged in a grid pattern, the first measurement process can be easily performed.

Also, the luminance correction data (second data) based on the position and amount of occurrence of luminance unevenness in the aerial image FI is associated with the reflective aerial imaging element 10. Then, the image correction unit 40 corrects and outputs the input image of the image display unit 20 based on the luminance correction data. Thereby, it is possible to observe a good aerial image FI with little luminance unevenness.

Also, as shown in FIG. 16, a large reflective aerial connection is formed by joining a plurality of optical elements 11 at seams 10b in a direction orthogonal to the thickness direction (Y direction) so that the reflecting surfaces 14 are parallel to each other. An image element 10 'may be formed. Thereby, the reflective aerial imaging element 10 can be easily enlarged and a large aerial image FI can be displayed. At this time, by performing the first measurement process, the first holding process, and the first reading process, it is possible to easily prevent the image quality of the aerial image FI from being deteriorated by the joint 10b.

Further, the aerial video display device 1 is provided with an image correction unit 40 that corrects and outputs an image input to the image display unit 20 based on the shift correction data. Thereby, the image quality of the aerial image FI can be improved.

The reflective aerial imaging element 10 is associated with deviation correction data acquired in advance and held on the recording medium, and the deviation correction data indicates the position and amount of deviation between the chart C1 and the aerial image FI of the chart C1. Is based. Thereby, the image quality of the aerial image FI can be improved.

Second Embodiment
Next, a second embodiment of the present invention will be described. FIG. 27 shows a front view of a chart C2 used in the first measurement process of the second embodiment. FIG. 28 shows a front view of an example of the aerial image FI of the chart C2. In addition, the broken line in the drawing is attached for convenience in order to make the positional relationship of each dot easy to understand, and is not formed in the chart C2. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in that a chart C2 is used instead of the chart C1. Other parts are the same as those in the first embodiment.

Chart C2 is composed of a plurality of dots arranged in a grid pattern. All dots have the same shape and color. As shown in FIG. 28, in the first measurement process, the two dots in the area surrounded by the alternate long and short dash line are shifted to the left, and a shift between the chart C2 and the aerial image FI of the chart C2 occurs.

At this time, since the chart C2 is composed of a plurality of dots arranged in a grid pattern, the position and amount of deviation are easily measured by comparing the position coordinates of each dot in the aerial image FI of the chart C2 and the chart C2. can do. For example, the captured image of the aerial image FI may be binarized, and the position and amount of deviation may be measured based on the center of gravity of each dot.

FIG. 29 shows an example of the output image P ′ on the display panel 21 of the image display unit 20 corrected by the image correction unit 40. The input image of the image display unit 20 is the chart C2 (see FIG. 27), and the aerial image FI shown in FIG. 28 is corrected. In the drawing, a region surrounded by a one-dot chain line corresponds to a region surrounded by a one-dot chain line in FIG.

At this time, based on the deviation correction data stored in the storage unit 50, the output image P ′ is corrected in a direction to cancel the deviation at the position where the deviation due to the defect DP of the reflective aerial imaging element 10 occurs. That is, in the region surrounded by the one-dot chain line in FIG. 29, the two dots have moved in the opposite direction to the case of the aerial image FI in FIG. Thereby, the observer can observe the aerial image FI without distortion.

In this embodiment, the same effect as in the first embodiment can be obtained. In addition, since the chart C2 is composed of a plurality of dots arranged in a grid pattern, the difference between the chart C2 and the aerial image FI of the chart C2 is obtained by comparing the position coordinates of the dots of the aerial image FI of the chart C2 and the chart C2. The position and amount of occurrence can be easily measured.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 30 shows a front view of a chart C3 used in the first measurement process of the third embodiment. FIG. 31 shows a front view of an example of the aerial image FI of the chart C3. In addition, the broken line in the figure is attached for convenience in order to make the positional relationship of each dot easy to understand, and is not formed in the chart C3. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in that a chart C3 is used instead of the chart C1. Other parts are the same as those in the first embodiment.

Chart C3 is composed of a plurality of circular dots and a plurality of square dots, and the dots are arranged in a grid pattern. Moreover, the color of all the dots is the same black, and the shape of adjacent dots is different. In the first measurement step, as shown in FIG. 31, the eight dots in the region surrounded by the alternate long and short dash line are shifted in different directions, and a shift between the chart C3 and the aerial image FI of the chart C3 occurs. In image processing, pattern matching is performed to determine the shape of dots.

At this time, since the shapes of adjacent dots in the chart C3 are different, even when the number of displaced dots is large in the first measurement step as shown by the region surrounded by the one-dot chain line in FIG. It is possible to easily measure the occurrence position and amount of deviation from the aerial image FI of C3. The shape of the dot is not limited to a circle and a rectangle, and may be an ellipse or a triangle, for example. That is, it suffices if the shapes of adjacent dots are different.

FIG. 32 shows an example of the output image P ′ on the display panel 21 of the image display unit 20 corrected by the image correction unit 40. The input image of the image display unit 20 is a chart C3 (see FIG. 30), and the aerial image FI shown in FIG. 31 is corrected. In the drawing, a region surrounded by a one-dot chain line corresponds to a region surrounded by a one-dot chain line in FIG.

At this time, based on the deviation correction data stored in the storage unit 50, the output image P ′ is corrected in a direction to cancel the deviation at the position where the deviation due to the defect DP of the reflective aerial imaging element 10 occurs. That is, in the region surrounded by the one-dot chain line in FIG. 32, eight dots are moving in the opposite direction to the case of the aerial image FI in FIG. Thereby, the observer can observe the aerial image FI without distortion.

In this embodiment, the same effect as in the first embodiment can be obtained. Moreover, since the shapes of adjacent dots are different, the position and amount of occurrence of the deviation between the chart C3 and the aerial image FI of the chart C3 can be measured more easily than in the second embodiment.

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described. FIG. 33 shows a front view of a chart C4 used in the first measurement process of the fourth embodiment. FIG. 34 shows a front view of an example of the aerial image FI of the chart C4. In addition, the broken line in the drawing is added for convenience in order to make the positional relationship of each dot easy to understand, and is not formed in the chart C4. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in that a chart C4 is used instead of the chart C1. Other parts are the same as those in the first embodiment.

The chart C4 is composed of a plurality of white dots and a plurality of black dots, and the dots are arranged in a grid pattern. Moreover, the shape of all the dots is the same circle, and the colors of adjacent dots are different. In the first measurement step, as shown in FIG. 34, the eight dots in the region surrounded by the alternate long and short dash line are shifted in different directions, and a shift between the chart C4 and the aerial image FI of the chart C4 occurs.

At this time, since the colors of adjacent dots in the chart C4 are different, even in the first measurement step, even when the number of displaced dots is large as shown by the region surrounded by the one-dot chain line in FIG. 34, the chart C4 and the chart It is possible to easily measure the occurrence position and amount of deviation from the C4 aerial image FI.

Further, in the third embodiment, in image processing, it is necessary to perform pattern matching for determining the shape of dots, but according to this embodiment, pattern matching can be omitted.

Note that the color of the dots is not limited to white and black, and may be red and blue, for example. That is, it is only necessary that adjacent dots have different colors.

FIG. 35 shows an example of the output image P ′ on the display panel 21 of the image display unit 20 corrected by the image correction unit 40. The input image of the image display unit 20 is the chart C4 (see FIG. 33), and the aerial image FI shown in FIG. 34 is corrected. In the drawing, a region surrounded by a one-dot chain line corresponds to a region surrounded by a one-dot chain line in FIG.

At this time, based on the deviation correction data stored in the storage unit 50, the output image P ′ is corrected in a direction to cancel the deviation at the position where the deviation due to the defect DP of the reflective aerial imaging element 10 occurs. In other words, in the region surrounded by the one-dot chain line in FIG. 35, eight dots have moved in the opposite direction to the case of the aerial image FI in FIG. Thereby, the observer can observe the aerial image FI without distortion.

In this embodiment, the same effect as in the first embodiment can be obtained. Further, since the colors of adjacent dots are different, the position and amount of occurrence of the deviation between the chart C4 and the aerial image FI of the chart C4 can be measured more easily than in the second embodiment.

<Fifth Embodiment>
Next, a fifth embodiment of the present invention will be described. 36 and 37 show front views of charts C5a and C5b used in the first measurement process of the fifth embodiment, respectively. 38 and 39 show front views of examples of the aerial images FI of the charts C5a and C5b, respectively. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. The present embodiment is different from the first embodiment in that charts C5a and C5b are used instead of the chart C1. Other parts are the same as those in the first embodiment.

The chart C5a is composed of a plurality of vertical lines arranged in parallel to each other, and the chart C5b is composed of a plurality of horizontal lines arranged in parallel to each other. In the first measurement step, the charts C5a and C5b are displayed on the display panel 21 in order, and the occurrence position and amount of deviation between the charts C5a and C5b and the aerial images FI of the charts C5a and C5b are measured.

In the first measurement step, in the region surrounded by the alternate long and short dash line in FIG. 38 and FIG. 39, the vertical line curves to the left and the horizontal line curves upward, and Deviation has occurred. At the time of image processing in the first measurement process, the captured image of the aerial image FI of the chart C5a is scanned in the direction from the left to the right in FIG. 38, for example. Further, the captured image of the aerial video FI of the chart C5b is scanned in the direction from the upper side to the lower side of FIG. 39, for example.

At this time, since the chart C5a is used, the horizontal line is not imaged, and the horizontal shift can be easily detected by scanning. Further, since the chart C5b is used, the vertical line is not imaged, and the vertical shift can be easily detected by scanning. That is, by using the charts C5a and C5b, it is possible to more easily measure the occurrence position and amount of deviation between the charts C5a and C5b and the aerial images FI of the charts C5a and C5b by image processing.

At this time, the shift generation position Fa is discontinuously held as a discontinuous point on the display panel 21 in the shift correction data, but the shift amount between the adjacent generation positions Fa is interpolated by the image correction unit 40.

Then, based on the deviation correction data stored in the storage unit 50, the output image is corrected in a direction to cancel the deviation at the position where the deviation due to the defect DP of the reflective aerial imaging element 10 occurs. That is, on the output image, the vertical line corresponding to the curved vertical line in the region surrounded by the alternate long and short dash line in FIG. 38 curves in the opposite direction to the case of the aerial image FI. Also, on the output image, the horizontal line corresponding to the curved horizontal line in the region surrounded by the one-dot chain line in FIG. 39 curves in the opposite direction to the case of the aerial image FI. Thereby, the observer can observe the aerial image FI without distortion.

In this embodiment, the same effect as in the first embodiment can be obtained. The chart C5a includes a plurality of vertical lines arranged in parallel to each other, and the chart C5b includes a plurality of horizontal lines arranged in parallel to each other. Thereby, the position and amount of deviation between the charts C5a and C5b and the aerial images FI of the charts C5a and C5b can be more easily measured by image processing.

<Sixth Embodiment>
Next, a sixth embodiment of the present invention will be described. FIG. 40 shows a front view of a chart C6 used in the first measurement process of the sixth embodiment. FIG. 41 shows a front view of an example of the aerial image FI of the chart C6. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in that a chart C6 is used instead of the chart C1. Other parts are the same as those in the first embodiment.

The chart C6 includes a plurality of lines 61 and 62 that are arranged in parallel to each other and extend in the vertical direction. Further, the line width of the line 62 is larger than the line width of the line 61. The lines 62 are arranged in the horizontal direction at predetermined intervals (5 mm period in the present embodiment), and the lines 61 are arranged between adjacent lines 62 at a predetermined period (1 mm period in the present embodiment).

In the first measurement process, the measurer visually observes the aerial image FI shown in FIG. As a result, the measurer can easily measure the occurrence position of the deviation between the chart C6 and the aerial image FI of the chart C6 (the displaced vertical line within the area surrounded by the broken line). Further, the measurer can easily measure the amount of deviation between the chart C6 and the aerial image FI of the chart C6 as 0.5 mm.

Then, based on the deviation correction data stored in the storage unit 50, the output image is corrected in a direction to cancel the deviation at the position where the deviation due to the defect DP of the reflective aerial imaging element 10 occurs. That is, on the output image, the vertical line corresponding to the shifted vertical line in the region surrounded by the broken line in FIG. 41 moves in the opposite direction to the case of the aerial image FI. Thereby, the observer can observe the aerial image FI without distortion.

In this embodiment, the same effect as in the first embodiment can be obtained. Further, the lines 62 arranged at predetermined intervals have a large line width and a different shape from the adjacent lines 61. Thereby, in the first measurement step, the measurer can easily visually measure the occurrence position and amount of the deviation between the chart C6 and the aerial image FI of the chart C6.

In addition, instead of the line 62, a wavy line, a broken line, a one-dot chain line, or the like may be provided. That is, it is only necessary that the line 62 arranged at every predetermined period has a different shape from the adjacent line 61. Further, the color of the line 61 and the color of the line 62 may be different. In this case, the shapes of the lines 61 and 62 may be the same.

In the first to sixth embodiments, the reflective aerial imaging element 10 is formed by arranging a plurality of quadrangular prisms having reflecting surfaces 14 on two orthogonal side surfaces in a matrix on a transparent substrate. May be. Alternatively, the reflective aerial imaging element 10 may be formed by providing a plurality of through holes having a rectangular cross section in a matrix on a transparent substrate and forming the reflecting surfaces 14 on two side surfaces orthogonal to the through holes.

The present invention includes an image display unit that displays an image, a reflective aerial imaging element that forms an aerial image corresponding to the image displayed on the image display unit, a storage unit that stores data, and the image display In an aerial video display device manufacturing method comprising an image correction unit that corrects an image input to a unit based on data stored in the storage unit, the aerial video of a predetermined chart is observed, and the chart and the A first measurement step of measuring a position and amount of deviation of the chart from the aerial image, and first data based on the position and amount of occurrence of the deviation in association with the reflective aerial imaging element and a predetermined first recording medium A first holding step of holding the reflection type aerial imaging element and the image display unit at a predetermined position, and the first data corresponding to the reflection type aerial imaging element in the first recording Previous from medium A first reading step of reading in the memory unit, and comprising: a.

In the method for manufacturing an aerial image display apparatus having the above-described configuration, it is preferable that the chart includes a plurality of lines arranged in a lattice pattern.

In the method for manufacturing an aerial image display device having the above-described configuration, it is preferable that the chart includes a plurality of dots arranged in a grid pattern.

In the method for manufacturing an aerial image display device having the above-described configuration, it is preferable that the adjacent dots have different shapes or colors.

In the method for manufacturing an aerial image display apparatus having the above-described configuration, the present invention is preferably composed of a plurality of lines in which the chart is arranged in parallel.

In the method for manufacturing an aerial image display device having the above-described configuration, it is preferable that the lines arranged at every predetermined period have different shapes or colors from adjacent lines.

According to the present invention, in the method for manufacturing an aerial image display apparatus having the above-described configuration, a second measurement step of observing an aerial image to measure the occurrence position and amount of luminance unevenness, and a second measurement step based on the occurrence position and amount of the luminance unevenness. A second holding step of holding two data in a predetermined second recording medium in association with the reflective aerial imaging element, and the second data corresponding to the reflective aerial imaging element from the second recording medium. It is preferable to include a second reading step for reading into the storage unit.

According to the present invention, in the method for manufacturing an aerial image display device having the above-described configuration, the reflective aerial imaging element includes a plurality of light-transmitting optical elements in which reflective surfaces parallel to the thickness direction are arranged in parallel at a predetermined period. It is preferable that the optical elements are arranged in parallel in the thickness direction, and the plurality of optical elements are joined at a seam of side end faces in a direction orthogonal to the thickness direction so that the reflecting surfaces are parallel to each other.

Further, the present invention provides a method for manufacturing a reflective aerial imaging element that forms an aerial image corresponding to an object to be projected, and observes an aerial image of a predetermined chart to detect a deviation between the chart and the aerial image of the chart. A first measurement step for measuring the generation position and amount, and a first holding step for holding first data based on the generation position and amount of the deviation on a predetermined recording medium in association with the reflective aerial imaging element. It is characterized by providing.

In addition, the aerial video display device of the present invention,
An image display unit for displaying an image;
A reflective aerial imaging element that forms an aerial image corresponding to the image displayed on the image display unit;
A storage unit for storing first data based on a predetermined chart and an occurrence position and amount of a deviation between the predetermined image and the aerial image of the chart imaged by the reflective aerial imaging element;
An image correcting unit that corrects and outputs an image to be displayed on the image display unit based on the first data;
It is characterized by having.

According to the present invention, in a reflective aerial imaging element that forms an aerial image corresponding to an object to be projected, the first data is associated with first data that is acquired in advance and held on a predetermined recording medium. This is based on the occurrence position and amount of deviation between the chart of FIG.

The present invention can be used for a reflective aerial imaging element that forms a real image of a projection object in the air and an aerial image display device including the same.

DESCRIPTION OF SYMBOLS 1 Aerial image display apparatus 10 Reflection type aerial image formation element 11 Optical element 12 Base material 13 Adhesive 14 Reflecting surface 15 Spacer 18 Incident surface 19 Outgoing surface 20 Image display part 21 Display panel 40 Image correction part 50 Storage part 100 Control part OB Projection object FI aerial image P 'output image C1, C2, C3, C4, C5a, C5b, C6 chart

Claims (11)

1. An image display unit that displays an image, a reflective aerial imaging element that forms an aerial image corresponding to the image displayed on the image display unit, a storage unit that stores data, and an input to the image display unit In the manufacturing method of the aerial video display device comprising an image correction unit that corrects the obtained image based on the data stored in the storage unit,
   A first measurement step of observing an aerial image of a predetermined chart and measuring an occurrence position and amount of a deviation between the chart and the aerial image of the chart;
   A first holding step of holding, on a predetermined first recording medium, first data based on the position and amount of occurrence of the deviation in association with the reflective aerial imaging element;
   An installation step of installing the reflective aerial imaging element and the image display unit at a predetermined position;
   A first reading step of reading the first data corresponding to the reflective aerial imaging element from the first recording medium into the storage unit;
   An aerial image display device manufacturing method comprising:
2. 2. The method of manufacturing an aerial image display device according to claim 1, wherein the chart is composed of a plurality of lines arranged in a grid pattern.
3. 2. The method of manufacturing an aerial image display device according to claim 1, wherein the chart is composed of a plurality of dots arranged in a grid pattern.
4. The method for manufacturing an aerial image display device according to claim 3, wherein the adjacent dots have different shapes or colors.
5. The method for manufacturing an aerial image display device according to claim 1, wherein the chart is composed of a plurality of lines arranged in parallel.
6. 6. The method for manufacturing an aerial image display device according to claim 5, wherein the lines arranged at every predetermined period are different in shape or color from adjacent lines.
7. A second measurement step of observing the aerial image and measuring the occurrence position and amount of luminance unevenness;
   A second holding step of holding second data based on the occurrence position and amount of the luminance unevenness in a predetermined second recording medium in association with the reflective aerial imaging element;
   A second reading step of reading the second data corresponding to the reflective aerial imaging element from the second recording medium into the storage unit;
   The method for manufacturing an aerial image display device according to any one of claims 1 to 6, comprising:
8. The reflective aerial imaging element has a plurality of light-transmitting optical elements arranged in parallel in the thickness direction with reflection surfaces parallel to the thickness direction arranged in parallel at a predetermined period, and the reflection surfaces are parallel to each other. The method for manufacturing an aerial image display device according to any one of claims 1 to 7, wherein a plurality of the optical elements are joined at a joint of side end faces in a direction orthogonal to the thickness direction.
9. In a method for manufacturing a reflective aerial imaging element that forms an aerial image corresponding to a projection object,
   A first measurement step of observing an aerial image of a predetermined chart and measuring an occurrence position and amount of a deviation between the chart and the aerial image of the chart;
   A first holding step of holding, on a predetermined recording medium, first data based on the position and amount of occurrence of the deviation in association with the reflective aerial imaging element;
   A method for manufacturing a reflective aerial imaging element.
10. An image display unit for displaying an image;
    A reflective aerial imaging element that forms an aerial image corresponding to the image displayed on the image display unit;
    A storage unit for storing first data based on a predetermined chart and an occurrence position and amount of a deviation between the predetermined image and the aerial image of the chart imaged by the reflective aerial imaging element;
    An image correcting unit that corrects and outputs an image to be displayed on the image display unit based on the first data;
    An aerial video display device comprising:
11. In a reflective aerial imaging element that forms an aerial image corresponding to a projection object, the first data is associated with first data acquired in advance and held on a predetermined recording medium, and the first data is a predetermined chart and chart A reflective aerial imaging element based on the position and amount of deviation from the aerial image.

Images