TW202032205A - Aerial image display device, transaction device, and aerial image formation control method of aerial image display device which uses optical mechanism and retroreflective materials to prevent peeping during password input - Google Patents

Abstract

Provided is an aerial image display device, which can ensure a user's visibility while protecting confidential information such as the displayed password. An aerial image display device (1) includes a display unit body (3), an aerial image forming mechanism (2), and a moving mechanism (7). The display unit body (3) displays images. The aerial image forming mechanism (2) is composed of a retroreflective unit (5) having a retroreflective material (16) and a beam splitter (6) and therefore causes an image displayed on the display unit body (3) to be formed as an aerial image by projecting this image into a space using the beam splitter (6) and the retroreflective unit (5). The moving mechanism (7) moves the retroreflective material (16) relative to the beam splitter (6).

Description

Aerial image display device, transaction device, and aerial image imaging control method of aerial image display device

The invention relates to an aerial image display device, a transaction device, and an aerial image imaging control method of the aerial image display device.

In recent years, aerial display technology that can display images in a three-dimensional space without special glasses, etc. has attracted attention. As one of the methods for displaying images in a three-dimensional space, a method described in Non-Patent Document 1 using AIRR (Aerial Imaging by Retro-Reflection) is known.

The structure of the aerial display caused by the AIRR method is equipped with a light source, a beam splitter (half-reflective mirror), and retroreflective materials. Part of the light emitted from the light source will be reflected by the beam splitter. The reflected light will enter the retroreflective material and be reflected in the same direction as the incident direction. The reflected light penetrates the beam splitter and forms an aerial image at a position symmetrical to the beam splitter and the light source. At this time, the ability to see the aerial image is limited to the range where the retroreflective material can be seen through the spectroscope from the user's point of view, which is a characteristic.

On the other hand, password input devices for the purpose of inputting confidential information such as passwords have been continuously improved to research methods to combat criminal acts caused by fraudulent confidential information. [Prior Technical Literature] [Non-Patent Literature]

[Non-Patent Literature] H. Yamamoto, Y. Tomiyama, S. Suyama, "Floating aerial LED signage based on aerial imaging by retro-reflection (AIRR)," Optics Express, Vol. 22, No. 22, pp. 26919- 26924 (2014) [Patent Literature]

[Patent Document 1] JP 2017-107165 A

[Technical Problem to be Solved by Invention]

The existing password input device is generally used together with an anti-peeping cover for the purpose of preventing fraudulent password input. However, on the other hand, there is a crime of scamming a password by installing a camera in the anti-peeping cover. In addition, there is a crime of swindling a password by attaching a film with a data acquisition function to the keyboard surface of the password input device.

As a countermeasure against criminal acts caused by fraudulent confidential information, there is a method of displaying the keyboard surface where the password is entered as an aerial image in a three-dimensional space. Since the range of the aerial image can be visually confirmed, it can prevent peeping. In addition, since there is no physical display surface, it is possible to prevent installation of a camera or attaching a film.

On the other hand, if the range of the aerial image that can be visually confirmed is narrow, there will be a problem that the visibility and convenience of the user are impaired, such as a situation where it cannot be seen due to height. As a method of expanding the range in which the aerial image can be visually confirmed, there are a display device and an aerial image display method that can be observed from a wider angle as described in Patent Document 1.

However, with this method, the range in which the aerial image can be visually confirmed is expanded beyond the point of view of the target user, so it is difficult to prevent peeping. When inputting in this state, the pressed number can be seen from the surroundings and the entered password can be easily defrauded. Therefore, if it is put into practical use as a password processing device, it lacks security.

The object of the present invention is to provide a display device for aerial images, which can protect confidential information such as the displayed password and ensure user visibility. [Technical solution to solve the problem]

In order to solve such a problem, the present invention provides an aerial image display device, which is composed of, for example, a display portion for displaying images, a retroreflective portion with a retroreflective material, and a beam splitter; it is characterized by having: an aerial imaging mechanism that displays The image on the display part is projected into the space by the beam splitter and the retroreflective part to thereby form an aerial image; and the moving mechanism moves the retroreflective material relative to the beam splitter. [Effects of Invention]

According to the present invention, for example, in an aerial image display device, confidential information such as a displayed password can be protected, and user visibility can be ensured.

Hereinafter, embodiments of the present invention will be described based on the drawings. In this specification, the same reference numerals in the various drawings indicate the same or similar constitution or processing. The description of the embodiments described later only illustrates the differences from the foregoing embodiments, and the descriptions of the subsequent descriptions are omitted. In addition, each embodiment and each modification example may be combined in part or all within the scope of the technical idea of the present invention and the scope of integration. [Example 1]

<The structure of the aerial image display device of Example 1> 1, 2A, and 2B, the configuration of Embodiment 1 of the present invention will be described. The first embodiment relates to an aerial image display device that moves the retroreflective part back and forth from the user's perspective to thereby change the angle at which aerial images can be visually confirmed.

FIG. 1 is a diagram showing the structure of the aerial image display device of the first embodiment. As shown in FIG. 1, the aerial image display device 1 has an aerial imaging mechanism 2 and a display main body 3, and includes an aerial image 4 projected in the air.

In Figure 1, Figure 2A and Figure 2B, the XYZ coordinate system of the normal system is defined. In the XYZ coordinate system, the aerial image 4 is imaged by light penetrating the beam splitter 6 and the side of the visually confirmable aerial image area 8 that can visually confirm the entire aerial image 4 is formed as the positive direction of the X axis. In addition, in this XYZ coordinate system, the width direction of the aerial image display device 1 facing the paper surface of FIGS. 1, 2A, and 2B is taken as the positive direction of the Y axis. In addition, in this XYZ coordinate system, the upward direction of the aerial image display device 1 toward the paper surface of FIGS. 1, 2A, and 2B is taken as the positive direction of the Z axis. 1, 2A, and 2B show longitudinal cross-sections of the aerial image display device 1 in the XZ plane.

The aerial imaging mechanism 2 is composed of a retroreflective part 5, a beam splitter 6 which is a half mirror, and a moving mechanism 7. The aerial imaging mechanism 2 has the function of imaging the light of the image displayed on the main body 3 of the display unit as an aerial image 4 through the reflection and penetration of light. The beam splitter 6 is arranged so that the surface of the sheet with the function of dividing the light beam is located on the same side as the retroreflective part 5. The image displayed on the aerial image 4 is equivalent to the image of the display main body 3.

The retroreflective part 5 is composed of a retroreflective material 16 and a quarter-wave plate 17 as a phase plate. The quarter-wave plate 17 is arranged between the retroreflective material 16 and the beam splitter 6. The quarter-wave plate 17 is used to shift the phase of light by 90° and to allow the light from the retroreflective part 5 to the beam splitter 6 to pass through.

The retroreflective part 5 is mounted on the moving mechanism 7 at a predetermined angle to the display main body 3 and the beam splitter 6. With the moving mechanism 7, the moving mechanism 7 can maintain the predetermined angle to the beam splitter 6 and move toward The surface of the beam splitter 6 moves in a parallel X-axis direction.

The light emitted from the display main body 3, when incident to the beam splitter 6, will be reflected or penetrated depending on the polarization direction. The reflected light is incident on the retroreflective material 16, and is reflected in the same direction as the incident direction. At this time, if there is no quarter-wavelength plate 17, the polarization direction of the light will not change, so the reflected light will not penetrate the beam splitter 6. Although the quarter-wave plate 17 shifts the phase by 90° when light passes, it is arranged between the retroreflective material 16 and the beam splitter 6, so the light passes through the quarter-wave plate 17 back and forth in total. Twice, shifting the phase of the light by 180°. As a result, the polarization direction will change, so that the reflected light from the retroreflective material 16 penetrates the beam splitter 6.

For example, when the light emitted from the display main body 3 is P-polarized light, the beam splitter 6 uses a device that reflects P-polarized light and transmits S-polarized light. When the light reflected by the spectroscope 6 is reflected by the retroreflective part 5, it passes through the quarter-wave plate 17 twice and thus becomes S-polarized light, which can pass through the spectroscope 6 next time.

2A is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 1. FIG. 2B is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 1. FIG.

2A and 2B show the state of controlling the angle in the vertical direction as an example of changing the angle at which the aerial image 4 can be visually confirmed. The moving mechanism 7 moves the position of the retroreflective part 5 to the front and back of the aerial image display device 1 (positive and negative direction of the X axis), thereby moving the aerial image area 8 that can be visually confirmed to control the aerial image 4 angle. With the same configuration, the retroreflective portion 5 is moved to the left and right (positive and negative directions of the Y-axis) of the aerial image display device 1 to control the visually confirmable angle in the left and right directions. At this time, if the retroreflective part 5 is moved to the right of the aerial image display device 1 (positive direction of the Y-axis), the visual confirmation angle will be to the left (negative direction of the Y-axis). When the aerial image display device 1 moves to the left (the negative direction of the Y axis), the visual confirmation angle changes to the right (the positive direction of the Y axis).

<Modification of the aerial image display device of Example 1> In addition, the arrangement of the components of the aerial imaging mechanism 2 is not limited to the arrangement of FIG. 1. Fig. 3 is a diagram showing another configuration of the aerial image display device of the first embodiment. For example, as shown in FIG. 3, the retroreflective part 5 and the moving mechanism 7 are arranged on the opposite side of the display body 3 with respect to the XY plane arranged by the beam splitter 6, that is, arranged on the user side of the aerial image 4 The space is also available. At this time, the beam splitter 6 is such that the surface of the sheet with the function of splitting the light beam is located on the same side as the retroreflective portion 5, and the vertical (positive and negative direction of the Z axis) surface is opposite to that of FIG. 1 Configuration.

In addition, in this embodiment, the retroreflective portion 5 maintains a predetermined angle with the display portion main body 3 and the beam splitter 6, while being parallel to the surface of the beam splitter 6 by the moving mechanism 7 Move in the X-axis direction. However, it is not limited to this, and the predetermined angle formed by the retroreflective part 5 and the beam splitter 6 may be changed. The visually confirmable aerial image area 8 is an area where the position of the reflective surface of the retroreflective portion 5 can be visually confirmed through the beam splitter 6. Therefore, the predetermined angle formed by the retroreflective part 5 and the beam splitter 6 may be changed in such a way that the aerial image area 8 can be visually confirmed to be at the target position. [Example 2]

<The structure of the aerial image display device of Example 2> 4, 5A, and 5B, the configuration of Embodiment 2 of the present invention will be described. In the description of Embodiment 2 below, the description overlapping with Embodiment 1 is omitted. The second embodiment relates to an aerial image display device that makes the retroreflective part move up and down from the user's point of view, thereby changing the angle at which aerial images can be visually confirmed.

4 is a diagram showing the structure of the aerial image display device of the second embodiment. As shown in FIG. 4, the aerial image display device 1 has the same configuration as the first embodiment except that the direction in which the retroreflective section 5 is moved is up and down.

In Fig. 4, Fig. 5A and Fig. 5B, as in Example 1, the XYZ coordinate system of the normal system is defined. That is, in the XYZ coordinate system, the aerial image 4 is imaged by light penetrating the beam splitter 6 and the side of the aerial image area 8 where the aerial image 4 can be visually confirmed is formed as the positive direction of the X axis. In addition, in the XYZ coordinate system, the width direction of the aerial image display device 1 facing the paper surface of FIGS. 4, 5A, and 5B is taken as the positive direction of the Y axis. In addition, in this XYZ coordinate system, the upward direction of the aerial image display device 1 toward the paper surface of FIGS. 4, 5A, and 5B is taken as the positive direction of the Z axis. 4, 5A, and 5B show longitudinal cross-sections of the aerial image display device 1 in the XZ plane.

The retroreflective part 5 is mounted on the moving mechanism 7 at a predetermined angle to the display main body 3 and the beam splitter 6. With the moving mechanism 7, the Z axis direction can be maintained while maintaining the predetermined angle to the beam splitter 6 mobile.

5A is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 2. FIG. FIG. 5B is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 2. FIG. FIGS. 5A and 5B show the state of controlling the angle in the vertical direction (Z-axis direction) as an example of changing the angle at which the aerial image 4 can be visually confirmed. The moving mechanism 7 moves the position of the retroreflective part 5 up and down (in the Z-axis direction), thereby moving the visually confirmed aerial image area 8 to control the angle at which the aerial image 4 can be visually confirmed.

Also, as in the first embodiment, the arrangement of the components of the aerial imaging mechanism 2 is not limited to the arrangement of FIG. 4. For example, the retroreflective section 5 is arranged on the opposite side of the display section main body 3 with respect to the XY plane where the beam splitter 6 is arranged. , That is, it can be arranged in the space on the user's side where the aerial image 4 is imaged.

The second embodiment can ensure the same visual performance as the first embodiment, and because the retroreflective part 5 and the moving mechanism 7 are arranged above the beam splitter 6, compared with the first embodiment, the beam splitter can be further retained. 6 Space below. Therefore, the aerial image display device 1 can be arranged or stored in the housing with a higher degree of freedom. [Example 3]

<The structure of the aerial image display device of Example 3> 6, 7A, and 7B, the configuration of Embodiment 3 of the present invention will be described. In the following description of Embodiment 3, descriptions that overlap with Embodiments 1 to 2 are omitted. The third embodiment relates to an aerial image display device that makes the retroreflective part move obliquely from the user's perspective to thereby change the angle at which aerial images can be visually confirmed.

FIG. 6 is a diagram showing the structure of the aerial image display device of the third embodiment. As shown in FIG. 6, the aerial image display device 1 has the same structure as the first embodiment except that the direction in which the retroreflective portion 5 is moved is oblique. In Embodiment 3, the retroreflective part 5 is mounted on the moving mechanism 7 at a predetermined angle to the display body 3 and the beam splitter 6, as shown in the aerial image display device 1 shown in FIGS. 6, 7A and 7B. In the XZ plane of the cross-sectional view, the moving mechanism 7 can move obliquely in the direction of the predetermined angle while maintaining the predetermined angle.

FIG. 7A is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 3. FIG. FIG. 7B is a diagram showing an example of the angle that can be visually confirmed when the retroreflective portion is moved in Example 3. FIG.

FIGS. 7A and 7B show the state of controlling the angle in the vertical direction as an example of changing the angle at which the aerial image 4 can be visually confirmed. The position of the retroreflective part 5 is moved obliquely by the moving mechanism 7 to move the visually confirmed aerial image area 8 to control the angle at which the aerial image 4 can be visually confirmed.

Also, as in the first embodiment, the arrangement of the components of the aerial imaging mechanism 2 is not limited to the arrangement shown in FIG. 6, for example, the retroreflective section 5 is arranged on the opposite side of the display section main body 3 with respect to the XY plane where the beam splitter 6 is arranged. , That is, it can be arranged in the space on the user's side where the aerial image 4 is imaged.

In Example 3, compared with Example 2, the dimensions of the retroreflective portion 5 and the moving mechanism 7 in the Z-axis direction can be made smaller. In addition, one movement of the retroreflective part 5 in the third embodiment can move the retroreflective part 5 in both the X-axis direction and the Z-axis direction, so that the visually confirmable aerial image area 8 can be adjusted efficiently. [Example 4]

<The structure of the aerial image display device of Example 4> 8, 9A and 9B, the structure of the fourth embodiment of the present invention will be described. In the following description of Embodiment 4, descriptions that overlap with Embodiments 1 to 3 are omitted. Embodiment 4 shows an example of a case where a mirror that reflects light used for imaging is provided in an aerial image display device that moves the retroreflective part to thereby change the angle at which aerial images can be visually confirmed.

In the case where the aerial image display device 1 is arranged vertically (Z-axis direction) opposite to the configuration of Embodiments 1 to 3, although the angle of the aerial image 4 can be visually confirmed to expand downward, it will only be able to At his feet, he visually confirmed the love of the aerial image. In order to be able to visually confirm the aerial image 4 at the position of the user's face, the angle at which the aerial image can be visually confirmed must be directed upward, so a reflecting plate such as a mirror 9 is used to reflect the light that forms the aerial image.

FIG. 8 is a diagram showing the structure of the aerial image display device of the fourth embodiment. FIG. 8 is an example in which the aerial image display device 1 of the third embodiment is arranged upside down, and shows a situation in which the angle at which the aerial image can be visually confirmed by the mirror 9 is changed upward. In addition, the coordinate axes shown in FIGS. 8, 9A, and 9B are the same as those based on the aerial image display device 1 of Embodiment 3 shown in FIGS. 6, 7A, and 7B.

FIG. 9A is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 4. FIG. 9B is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 4. FIG.

9A and 9B show the state of controlling the angle in the vertical direction as an example of changing the angle at which the aerial image 4 can be visually confirmed. As in the third embodiment, the position of the retroreflective part 5 is moved diagonally by the moving mechanism 7 to move the visually confirmed aerial image area 8 to control the angle at which the aerial image 4 can be visually confirmed.

As described above, according to Examples 1 to 4, the visually confirmable aerial image area 8 in which the aerial image 4 can be visually confirmed is limited to the range where the retroreflective portion 5 can be seen through the spectroscope 6. However, by moving the retroreflective portion 5 to adjust the visually confirmable aerial image area 8, the aerial image 4 can be visually confirmed at various angles or height positions.

In addition, the adjustment of the aerial image area 8 can be visually confirmed and can be performed by a simple mechanism such as the moving mechanism 7 of the retroreflective part 5. Thereby, the visibility and convenience of the user can be improved, and the security problem of allowing non-target users to see the aerial image 4 can be avoided, and the security of the display or input of confidential information can be improved. [Example 5]

＜Automatic transaction device using aerial image display device＞ 10, 11A, and 11B, the configuration of the fifth embodiment of the present invention will be described. Example 5 shows an example of applying the aerial image display device of Examples 1 to 4 to an automatic transaction device. In the following description of Embodiment 5, descriptions that overlap with Embodiments 1 to 4 are omitted. In addition, the automatic transaction devices include ATM (Automatic Teller Machine) or CD (Cash Dispenser) for automatic transactions of cash, and include various devices for automatic transactions of paper other than cash.

FIG. 10 is a diagram showing the configuration of the device of the fifth embodiment in which the first to fourth embodiments are applied to the automatic transaction device. FIG. 10 shows, as an example, the aerial image display device 1 of the fourth embodiment.

The XYZ coordinate system of the positive system in FIG. 10 is the same as the coordinate axis based on the aerial image display device 1 of the fourth embodiment shown in FIGS. 8, 9A and 9B. FIG. 10 shows a longitudinal section of the XZ plane of the automatic transaction device 10 and the aerial image display device 1. As shown in FIG. 10, the automatic transaction device 10 includes an aerial image display device 1, a camera 11, a password display input unit 14, and a user identification unit 15.

The camera 11 captures an image of the user and transmits the image to the user identification unit 15. The user identification unit 15 is an arithmetic control device such as a microprocessor that controls the camera 11, the aerial image display device 1, and the password display input unit 14, etc. The user recognition unit 15 recognizes the user's position based on the image received from the camera 11 and uses the position information to control the moving mechanism 7 of the aerial image display device 1 to move the retroreflective unit 5.

For example, the user recognition unit 15 is such that the face of the user recognized by the image received from the camera 11 is located in the visually confirmable aerial image area 8 of the password display unit 12 (air image 4) described later , The moving mechanism 7 is controlled to move the retroreflective part 5.

Or, for example, the user recognition unit 15 estimates the height of the user based on the result of recognizing the face from the image received from the camera 11. Next, the user recognition unit 15 refers to a predetermined table etc. based on the estimated height of the user, so that the user's face is located in the visually confirmable aerial image area 8 of the password display unit 12 (the aerial image 4) The movement control position of the retroreflective part 5 is obtained in the manner of. For example, in a predetermined table, each movement control position of the retroreflective portion 5 corresponds to each height. In addition, the user recognition unit 15 controls the moving mechanism 7 based on the acquired movement control position to move the retroreflective unit 5 to move the visually confirmable aerial image area 8 of the password display unit 12 (aerial image 4), thereby Make the user's face located in the aerial image area 8 that can be visually confirmed.

The password display input unit 14 is composed of a password display unit 12 (aerial image 4) and a password input unit 13. The password input unit 13 has a function of detecting operations performed by the user on the password display unit 12. For example, the password input unit 13 displays a keyboard surface containing 10 numbers from "0" and "1" to "9" on the password display unit 12, by obtaining the surface or space equivalent to the keyboard surface The coordinates of each keyboard are detected to detect the operation of each keyboard. The detection method of the operation can include a method using the principle of triangulation with two cameras, or a method using an infrared sensor, but it is not limited to this.

＜Movement control processing of the retroreflective part of the automatic transaction device＞ FIG. 11 is a flowchart showing an example of the movement control process of the retroreflective part of the fifth embodiment. The movement control processing of the retroreflective part 5 of the automatic transaction device 10 is executed by the user identification part 15 at a predetermined timing when the password input is started.

First, in step S11, the user identification unit 15 starts to display the aerial image 4 on the password display unit 12. In this embodiment, the user identification part 15 displays a keyboard for inputting a password on the password display part 12.

Next, in step S12, the user recognition unit 15 uses the camera 11 to take an image. Next, in step S13, the user recognition unit 15 uses processing such as face recognition to detect the position of the face in the image taken in step S12.

Next, in step S14, the user recognition unit 15 determines whether the face position detected in step S13 exists within the range of the visually confirmable aerial image area 8 of the password display unit 12 (the aerial image 4). If the face position detected in step S13 exists within the range of the visually confirmable aerial image area 8 of the password display unit 12 (air image 4) (step S14 Yes), the user recognition unit 15 will proceed to step S16 deal with. On the other hand, in the case where the face position detected in step S13 does not exist within the range of the visually confirmable aerial image area 8 of the password display unit 12 (aerial image 4) (step S14 No), the user recognition unit 15 The processing of step S15 will be performed.

In step S15, the user identification unit 15 controls the moving mechanism 7 to move the retroreflective unit 5. When step S15 ends, the user identification unit 15 will perform the processing of step S16. In step S16, the user identification unit 15 determines whether to end the display of the aerial image 4 of the password display unit 12 started in step S11. When the display of the aerial image 4 of the password display unit 12 started in step S11 is ended (step S16 Yes), the user identification unit 15 ends the movement control process of the retroreflective unit 5 of the automatic transaction apparatus 10. On the other hand, in the case where the display of the aerial image 4 of the password display unit 12 starting at step S11 is not ended (step S16 No), the user identification unit 15 will perform the processing of step S12.

12A is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 5. FIG. FIG. 12B is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 5. FIG. As can be seen from FIG. 11A and FIG. 11B, it shows a state where the angle in the vertical direction is controlled as an example of changing the angle of the password display portion 12 that can be visually confirmed. The moving mechanism 7 of the aerial image display device 1 moves the position of the retroreflective part 5, thereby controlling the angle or the vertical height of the aerial image 4 that can be visually confirmed.

According to Embodiment 5, in the automatic transaction device 10 equipped with the aerial image display device 1, it is possible to protect confidential information such as the displayed password and to ensure the visibility of the user.

In addition, in the fifth embodiment, although it shows an example in which the aerial image display device 1 is used for the password input of the automatic transaction device 10, it is not limited to this. In the case where only information is displayed and no input corresponding to the display is required, Example 5 can also be used.

The present invention is not limited to the foregoing embodiments, but includes various modifications. For example, the foregoing embodiments are described in detail in order to explain the present invention in an easy-to-understand manner, and are not limited to those having all the described configurations. In addition, a part of the configuration of one embodiment can be replaced with another configuration, and the configuration of other embodiments may be added in addition to the configuration of one embodiment. In addition, it is possible to add, delete, replace, integrate, or decentralize a part of the configuration of each embodiment. In addition, each configuration or each treatment shown in the embodiment may be appropriately dispersed or integrated according to the treatment efficiency or the installation efficiency.

1: Aerial image display device 2: Aerial imaging mechanism 3: Display body 4: Aerial image 5: Retroreflective part 6: Spectroscope 7: Mobile agency 8: Visually confirm the aerial image area 9: Mirror 10: Automatic trading device 11: Camera 12: Password display unit (aerial image) 13: Password input section 14: Password display input section 15: User Identification Department 16: Retroreflective material 17: quarter wave plate

Fig. 1 is a diagram showing the structure of the aerial image display device of Example 1. [FIG. 2A] is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 1. [FIG. [Fig. 2B] is a diagram showing an example of the angle that can be visually confirmed when the retroreflective portion is moved in Example 1. [Fig. 3] A diagram showing another configuration of the aerial image display device of Example 1. [Fig. [Fig. 4] A diagram showing the structure of the aerial image display device of Example 2. [Fig. Fig. 5A is a diagram showing an example of the angle that can be visually confirmed when the retroreflective portion is moved in Example 2. Fig. 5B is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 2. Fig. 6 is a diagram showing the structure of the aerial image display device of the third embodiment. [FIG. 7A] is a diagram showing an example of the angle that can be visually confirmed when the retroreflective portion is moved in Example 3. [FIG. [FIG. 7B] A diagram showing an example of the angle that can be visually confirmed when the retroreflective portion is moved in Example 3. [FIG. [Fig. 8] A diagram showing the structure of an aerial image display device of Example 4. [Fig. [FIG. 9A] is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 4. [FIG. [FIG. 9B] A diagram showing an example of the angle that can be visually confirmed when the retroreflective portion is moved in Example 4. [FIG. [FIG. 10] A diagram showing the configuration of the apparatus of Embodiment 5 in which Embodiments 1 to 4 are applied to an automatic transaction device. Fig. 11 is a flowchart showing an example of movement control processing of the retroreflective part of the fifth embodiment. [FIG. 12A] is a diagram showing an example of an angle that can be visually confirmed when the retroreflective portion is moved in Example 5. [FIG. [FIG. 12B] A diagram showing an example of the angle that can be visually confirmed when the retroreflective portion is moved in Example 5. [FIG.

1: Aerial image display device

2: Aerial imaging agency

3: Display body

4: Aerial image

5: Retroreflective part

6: Spectroscope

7: Mobile agency

16: Retroreflective material

17: quarter wave plate

Claims (10)

An aerial image display device with: The display part displays images; The aerial imaging mechanism is composed of a retroreflective part with retroreflective material and a beam splitter, and the image displayed on the display part is projected into the space by the beam splitter and the retroreflective part to form an aerial image; as well as The moving mechanism moves the retroreflective material relative to the beam splitter. Such as the aerial image display device described in claim 1, wherein: The aforementioned retroreflective part, The system further includes a quarter-wave plate arranged between the retroreflective material and the beam splitter. Such as the aerial image display device described in claim 1, wherein: The aforementioned moving mechanism, The retroreflective material is moved in a direction parallel to the surface of the beam splitter. Such as the aerial image display device described in claim 1, wherein: The aforementioned moving mechanism, The retroreflective material is moved in a direction perpendicular to the surface of the beam splitter. Such as the aerial image display device described in claim 1, wherein: The aforementioned moving mechanism, The retroreflective material is moved in an angular direction with respect to the surface of the beam splitter where the retroreflective material is arranged. Such as the aerial image display device described in claim 1, wherein: The aforementioned moving mechanism, The angle formed by the retroreflective material to the surface of the beam splitter is changed. Such as the aerial image display device described in claim 1, wherein: The aforementioned display portion and the aforementioned retroreflective portion, They are arranged at positions opposite to each other with the aforementioned beam splitter in between. The aerial image display device according to claim 1, which further has: A reflector that reflects the aerial image imaged by the aerial imaging mechanism. A transaction device with: The photography department is a user of photography transactions. The aerial imaging mechanism is composed of a retroreflective part with a retroreflective material and a beam splitter, and the image displayed on the display part is projected into the space by the beam splitter and the retroreflective part to form an aerial image; The user recognition unit recognizes the location of the user based on the image taken by the photography unit; and The moving mechanism corresponds to the position of the user identified by the user identification unit, and moves the retroreflective material relative to the beam splitter, thereby adjusting the aerial image imaged by the aerial imaging mechanism To the area where the user can visually confirm. An aerial image imaging control method of an aerial image display device is characterized by: The aforementioned aerial image display device has: The display part displays images; and The aerial imaging mechanism is composed of a retroreflective part with retroreflective material and a beam splitter, and the image displayed on the display part is projected into the space by the beam splitter and the retroreflective part to form an aerial image; The retroreflective material is moved relative to the beam splitter, thereby changing the position where the aerial imaging mechanism images the aerial image.

Images