JPH10187332A - Hologram input keyboard - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable an input operation with an input keyboard using a touch panel without any discomfort. SOLUTION: A transparent hologram in which character and numeric information of a key of a keyboard is recorded is attached to a touch panel, and a hologram reproduction image corresponding to the character and numeric information of the key functions as a touch switch. Features.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch panel for a cash dispenser, a computer, a calculator or the like, and more particularly to an input keyboard in which input keys of the keyboard are recorded as hologram images.

[0002]

2. Description of the Related Art In a touch panel provided with switches for converting the pressure of a human finger or the like into an electric signal, conventionally, characters and pictures such as the contents of each switch are printed and pasted. Alternatively, a display such as a CRT is arranged on the back side. However, such a touch panel cannot be made see-through, and it is difficult to limit the viewing area, which is inconvenient for a cash dispenser that is not desired to be seen by others. In addition, when a display such as a CRT is arranged, it is difficult to reduce the size, and it is difficult to flexibly respond to changes in the contents of switches.

[0003] In recent years, a thin type has been developed due to technological innovation.
Some users may feel uncomfortable when inputting with the thin type, and it is preferable that the thin type has a certain thickness.

[0004] It is an object of the present invention to provide a hologram input keyboard capable of performing an input operation with an input keyboard using a touch panel without any discomfort.

[0005]

According to the hologram input keyboard of the present invention, a transparent hologram in which character and numeric information of a key of a keyboard are recorded is attached to a touch panel, and a hologram corresponding to the character and numeric information of the key is provided. The reproduced image functions as a touch switch. Further, the present invention is characterized in that at least a part of the hologram information is recorded so as to be visible in front of or behind the touch panel. Further, the invention is characterized in that the hologram is a volume phase transmission hologram or a reflection hologram.

[0006]

Embodiments of the present invention will be described below. First, an example will be described in which the hologram input keyboard of the present invention is made of a volume phase transmission hologram. As shown in FIG. 1, a hologram recording film 2 is attached to a glass substrate 1, and object light 4 from a keyboard 3 and reference light 5 are made incident at a predetermined angle from the same side.
Interference occurs in the hologram recording film 2 to produce a volume phase transmission hologram. The object light 4 is coherent light such as laser light, for example, light obtained by dividing the light from the same light source as the reference light 5 and illuminating the keyboard 3. Next, as shown in FIG. 2, a transparent piezoelectric element 6 is attached to the glass substrate 1 by using an adhesive or an adhesive sheet.

As shown in FIG. 2, when the hologram 2 is illuminated with the reproduction illumination light 8 through the wavelength selective filter 7 from the same direction as the reference light 5, the reproduced image 9 of the keyboard is recognized by the observer 11 from the piezoelectric element 6 side. Is done. It is also possible to omit the wavelength selective filter. In order to reproduce the hologram ideally, it is preferable to illuminate at a predetermined wavelength from a predetermined angle, but an actual light source contains components of various wavelengths, and the parallelism varies, and the volume phase type Since the wavelength selectivity of the transmission type hologram is not sufficient, it is desirable to illuminate the hologram through the wavelength selectable filter 7 so that the image is not blurred by chromatic dispersion.

Next, an embodiment in which a touch panel is formed using a volume phase type transmission hologram will be described with reference to FIG. FIG. 3 shows a structure in which a PET protective layer 10 is adhered to the hologram surface of FIG. 2 and a wavelength-selective filter 7 is further laminated. When illuminating through the wavelength-selective filter 7 as in FIG. The image is reproduced at the position where the keyboard 3 is arranged. Therefore, the keyboard reproduced image is seen from the piezoelectric element 6 side to the back of the touch panel, and the position of the key of the keyboard reproduced image is set as the switch position of the touch panel.

When the keyboard 3 is illuminated with laser light and the object light 4 is incident on the hologram surface, the hologram image has a narrow viewing area limited to the range of the object light.
Therefore, although not shown, a scattering plate is arranged between the laser light source and the keyboard 3, and the keyboard 3 is illuminated with the laser light via the scattering plate to obtain object light, thereby expanding the viewing range. It is also possible to similarly limit the viewing zone by using a scattering plate.

Next, an example in which a keyboard image is reproduced on the near side of a touch panel using a volume phase transmission hologram will be described. As shown in FIG. 4, the object light 4 and the reference light 5 from the keyboard 3 are made incident from the same side at a predetermined angle from the glass substrate 1 side on which the hologram recording film 2 is adhered, and caused to interfere in the hologram recording film 2. To produce a volume phase transmission hologram.

Next, as shown in FIG. 5, a hologram is formed from a hologram surface side by a reproduction illumination light (a conjugate light of the reference light 5) 8 from a direction opposite to the reference light 5 in FIG. When illuminated, the hologram image 9 is reproduced at the position where the keyboard 3 was located, and the reproduced image 9 of the keyboard is recognized by the observer 11 from the piezoelectric element 6 side.

FIG. 6 shows a structure in which a PET protective layer 10 is adhered to the hologram surface of FIG. 5 and a wavelength-selective filter 7 is further laminated. As in the case of FIG. The image is reproduced at the position where the keyboard 3 of FIG. 4 is arranged. Therefore, the reproduced keyboard image appears on the near side of the touch panel, and the position of the key of the reproduced keyboard image is set as the switch position of the touch panel.

The above-mentioned type using the transmission type hologram can be said to be suitable for such a case, since it can be observed from outside the store if it is illuminated from inside the store when it is displayed at the store or in a window.

Next, an example in which the hologram input keyboard of the present invention is formed by a volume phase reflection hologram will be described. As shown in FIG. 7, a hologram recording film 2 is adhered to a glass substrate 1 and object light 4 from a keyboard 3 and reference light 5 are made to enter the hologram recording film 2 from opposite sides at a predetermined angle. Thus, a reflection hologram of a volume phase type is manufactured. Next, as shown in FIG. 8, a transparent piezoelectric element 6 is
Paste using an adhesive sheet or the like.

As shown in FIG. 8, when the hologram 2 is illuminated with the reproduction illumination light 8 from the same direction as the reference light 5, the reproduced image 9 of the keyboard is recognized by the observer 11 from the piezoelectric element 6 side. Since the volume phase type reflection hologram has excellent wavelength selectivity, it is not necessary to use a wavelength selectable filter, and the image can be clearly observed even when using ordinary white light. it can.

Next, an embodiment in which a touch panel is formed using a volume phase reflection hologram will be described. FIG. 9 shows a configuration in which a PET protective layer 10 is attached to the hologram surface of FIG. 8, and as in FIG.
When illuminated with the reproduction illumination light 8, the image is reproduced at the position where the keyboard 3 in FIG. 7 is arranged. Therefore, the reproduced image of the keyboard is seen from the piezoelectric element 6 side to the back of the touch panel,
By setting the position of the key of the reproduced image on the keyboard to the switch position of the touch panel, the finger is touched here, and is taken in as an input signal.

Next, an example in which a keyboard image is reproduced on the near side of the touch panel using a volume phase reflection hologram will be described. As shown in FIG.
The object light 4 and the reference light 5 are incident on the hologram recording film 2 at predetermined angles from opposite sides, and interfere with each other in the hologram recording film 2 to produce a volume phase reflection hologram. Next, as shown in FIG. 11, a transparent piezoelectric element 6 is attached to the glass substrate 1 by using an adhesive or an adhesive sheet.

Next, as shown in FIG. 11, when the hologram is illuminated from the piezoelectric element side with reproduction illumination light (a conjugate light of the reference light 5) 8 from the direction opposite to the reference light 5 in FIG. The hologram image 9 is reproduced at the position where it was moved, and the reproduced image 9 of the keyboard is recognized by the observer 11 from the piezoelectric element 6 side.

FIG. 12 shows that the hologram surface of FIG.
The protective layer 10 is attached, and when illuminated with the reproduction illumination light 8 which is a conjugate light of the reference light 5 as in the case of FIG. 11, the image is reproduced at the position where the keyboard 3 of FIG. Is done. Therefore, the reproduced keyboard image appears on the near side of the touch panel, and the position of the key of the reproduced keyboard image is set as the switch position of the touch panel.

When a reflection type hologram is used, an image can be reproduced if there is ambient light without using a special illumination light for reproduction. In addition, reproduction illumination light (backlight) is always necessary.

In the above example, the hologram was created with the keyboard itself as the subject, but the present invention is not limited to this. For example, it is also possible to create a hologram of a scattering plate in which characters, numbers and the like are patterned, reproduce this hologram image in a predetermined space, and use it as an input key. Such an example will be described below. As shown in FIG. 13, key information such as characters / symbols 21 is patterned on a transmission type or reflection type scattering plate 20. Next, as shown in FIG. 14, the scattered plate 20 and the hologram recording film 2 attached to the glass substrate 1 are opposed to each other. The hologram recording film 2 and the reference light 5 made incident from the substrate side
A volume phase reflection hologram is produced by causing interference in the inside. After manufacturing in this manner, a transparent piezoelectric element 6 is attached to the glass substrate 1 using an adhesive / adhesive sheet or the like to form a touch panel, and the touch panel is reproduced from the same direction as the reference light 5 as shown in FIG. When the illumination light 8 is irradiated, the light is reflected and diffracted by the hologram 2, and the reproduced image 22 is recognized by the observer 11 at the position where the scattering plate is placed during recording. The position of the character / symbol 21 of the reproduced image is set as a switch position of the touch panel, and is touched here with a finger to be taken in as an input signal.

FIGS. 16 and 17 show another example using a volume phase reflection hologram. In FIG. 16, when the reflection / scattering plate 20 and the hologram recording film 2 attached to the glass substrate 1 are opposed to each other at a predetermined interval as in the case of FIG. The hologram recording film 2 is irradiated with the reflected scattered light, and the reference light 5 is irradiated from the glass substrate side to interfere with the hologram recording film 2 to produce a volume phase reflection hologram. After the fabrication, the glass substrate 1
A transparent piezoelectric element 6 is attached to the touch panel, and as shown in FIG.
When the reproduction illumination light 8 is irradiated from the same direction as above, the reproduction illumination light 8 is reflected and diffracted by the hologram 2, and the reproduced image 22 is recognized by the observer 11 at the position where the scattering plate is placed during recording. The position of the character / symbol 21 of the reproduced image is set as a switch position of the touch panel, and is touched here with a finger to be taken in as an input signal. In this case, if the directivity of the scattered light is made off-axis with respect to the reference light (the direction of the scattered light is shifted with respect to the specular reflection light of the environment light), the positive direction of the environment light (reference light) is improved. Since the reflected light and the reflected diffracted light do not overlap, visibility can be improved.

Next, another example using a volume phase type transmission hologram will be described with reference to FIGS. In FIG. 18, as in the case of FIG.
The hologram recording film 2 attached to the glass substrate 1 is disposed facing the hologram recording film 2 at a predetermined interval, and the scattered light reflected when the incident light 30 is applied to the reflection / scattering plate 20 is illuminated on the hologram recording film 2 from the same side. Irradiation with the reference light 5 causes interference by the hologram recording film 2 to produce a volume phase transmission hologram. After the fabrication, the transparent piezoelectric element 6 is attached to the glass substrate 1 to form a touch panel. As shown in FIG. 19, when the touch panel is irradiated with the reproduction illumination light 8 in the same direction as the reference light 5, the hologram 2 The reproduced image 22 is recognized by the observer 11 at the position where the scattering plate is placed during recording. The position of the character / symbol 21 of the reproduced image is set as a switch position of the touch panel, and is touched here with a finger to be taken in as an input signal.

Next, an example in which the viewing area of the touch panel is limited will be described with reference to FIGS. First, as shown in FIG. 20A, a volume phase hologram photosensitive material layer 42 such as a photopolymer is formed on the surface of a glass substrate 41.
Is prepared, leaving an opening pattern portion 43 corresponding to a virtual opening pattern of the hologram light-sensitive material layer 42, and exposing the hologram light-sensitive material layer 42 to the other region 44, such as ultraviolet rays or the like. The area 4 is irradiated with the light beam 45.
Expire 4

Next, as shown in FIG. 20B, the reflection / scattering plate 20 shown in FIG.
Recording light flux 47 at a predetermined angle from hologram sensitive material layer 42 side
Is incident. The light beam 47 passes through the regions 43 and 44 of the hologram sensitive material layer 42, passes through the glass substrate 41, and is reflected by the reflection / scattering plate 20 on the light 48 reflected by the hologram sensitive material layer 4.
2 and the reflection hologram 4
Form 3 '.

As shown in FIG. 20C, the original plate 46 thus formed (consisting of the glass substrate 41 and the hologram sensitive material layer 42 comprising the hologram recording portion 43 and the lapsed portion 44 on its surface). Of the reflection hologram 43 '
The light 49 traveling in the opposite direction to the light beam 47 at the time of recording is
6, the light 50 reflected and diffracted by the reflection hologram 43 'is reflected from the original reflection scattering plate 2 by the reflection hologram 43'.
The reproduced image 22 is reproduced at the position of 0.

Therefore, as shown in FIG. 21A, another volume phase type hologram light-sensitive material layer 51 is formed on the back surface of the glass substrate 41 of the hologram light-sensitive material layer 42 of the original plate 46, and the hologram light-sensitive material layer 51 is formed. When light 49 traveling in the opposite direction to the light beam 47 at the time of recording the reflection hologram 43 ′ is incident from the side and copied, the light is reflected and diffracted by the reflection hologram 43 ′ as described with reference to FIG. The light 50 proceeds so as to reproduce the reproduced image at the original position of the reflection scattering plate 20. Since the hologram light-sensitive material layer 51 is located on the optical path, the light 50 interferes with the incident light 49 to form the reflection hologram 51 '. I do.

This recorded hologram light-sensitive material layer 51 (reflection hologram 51 ') is separated from the original plate 46 and
As shown in (b), a glass substrate 52 having a predetermined thickness is supported, and a transparent piezoelectric element 6 is attached to the glass substrate using an adhesive, an adhesive sheet, or the like to form a touch panel.

Next, as shown in FIG. 21C, when light 55 traveling from the surface side (original hologram light-sensitive material layer 42 side) in the direction opposite to the light 49 at the time of replication is incident, the hologram light-sensitive material layer Diffracted light 56 is generated by the 51 reflection hologram 51 '. This light 56 is diffracted as if it emerged from the position of the reproduced image 22 of the reflection scattering plate. Moreover, this diffracted light 5
6 is a reflection hologram 43 'at the time of duplication of FIG.
Therefore, the light passes through the same optical path as that of the aperture 43 ″ at the position of the original reflection hologram 43 ′, and the virtual aperture pattern 43 ″ exists. Is used to recognize the reproduced image 22 at the position where the scattering plate is placed at the time of recording through the opening pattern 43 ", so that the visual field is limited.
By setting the position of the symbol 21 as the switch position of the touch panel, by touching it with a finger, it is captured as an input signal.

Next, an example in which a non-contact type touch panel is used will be described with reference to FIGS. FIG. 22 shows an example of a non-contact touch panel using sound waves. The non-contact touch panel 60 has a hollow rectangular frame inside, and has a structure in which transducers 61 and 62 are provided in the X and Y directions of the rectangular frame, and reflectors 63 and 64 are provided on opposing sides, respectively. The sound wave is transmitted from the wave transmitters / receivers 61 and 62 toward the opposite side, and the reflection plate 63 on the opposite side,
The light is reflected at 64 and detected. In such a structure, for example, when a finger is placed at a point A in the figure, the sound wave at that portion is blocked and not detected, so that it is possible to key-input the coordinates (X, Y) of the position as an address. .

FIG. 23 shows an example of a non-contact touch panel using infrared rays. The non-contact touch panel 70 has a hollow rectangular frame inside, and infrared light emitters 71 and 72 are arranged in the X and Y directions of the rectangular frame, and infrared light
3 and 74 are provided, respectively, and infrared rays are emitted from the infrared light emitters 71 and 72 toward the opposite side, and are detected by the infrared light receivers 73 and 74 on the opposite side. . In such a structure, for example, if a finger is placed at a point A in the figure, the infrared ray at that portion is blocked and not detected, so that the coordinates (X, Y) of that position can be keyed as an address. .

FIG. 24 shows an embodiment in which the non-contact touch panel shown in FIG. 22 or 23 is used instead of the piezoelectric element in the example of FIG. A PET protective layer 10 is adhered to the surface of the hologram 2 (see FIG. 2), and a wavelength-selective filter 7 is further laminated, illuminated through the wavelength-selective filter 7, and the hologram 2 is placed at the position where the keyboard 3 of FIG. The image is reproduced. Therefore, the reproduced keyboard image is seen from the non-contact touch panel 60 (or 70) side, and the position of the key of the reproduced keyboard image is set to the switch position of the non-contact touch panel. Captured as

[0033]

As is apparent from the above description, according to the hologram input keyboard of the present invention, a keyboard or a scattering plate on which key information is patterned is recorded as a hologram and provided on a touch panel to reduce the thickness. It is possible to reduce the sense of discomfort during use as if feeling.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a method of manufacturing a volume phase transmission hologram.

FIG. 2 is a diagram illustrating a method of reproducing a volume phase transmission hologram.

FIG. 3 is a diagram illustrating a touch panel using a volume phase transmission hologram.

FIG. 4 is a diagram illustrating a method of manufacturing a volume phase transmission hologram.

FIG. 5 is a diagram illustrating a method of reproducing a volume phase transmission hologram.

FIG. 6 is a diagram illustrating a touch panel using a volume phase transmission hologram.

FIG. 7 is a diagram illustrating a method for producing a volume phase reflection hologram.

FIG. 8 is a diagram illustrating a method of reproducing a volume phase reflection hologram.

FIG. 9 is a diagram illustrating a touch panel using a volume phase reflection hologram.

FIG. 10 is a diagram illustrating a method of manufacturing a volume phase reflection hologram.

FIG. 11 is a diagram illustrating a method of reproducing a volume phase reflection hologram.

FIG. 12 is a diagram illustrating a touch panel using a volume phase reflection hologram.

FIG. 13 is a diagram showing a scattering plate on which characters, numerals, and the like are patterned.

FIG. 14 is an explanatory diagram of a method for producing a volume phase reflection hologram.

FIG. 15 is a diagram illustrating a touch panel using a volume phase reflection hologram.

FIG. 16 is an explanatory diagram of a method for producing a volume phase reflection hologram.

FIG. 17 is a diagram illustrating a touch panel using a volume phase reflection hologram.

FIG. 18 is an explanatory diagram of a method of manufacturing a volume phase transmission hologram.

FIG. 19 is a diagram illustrating a touch panel using a volume phase transmission hologram.

FIG. 20 is a diagram illustrating a method for producing a hologram having a limited viewing area.

FIG. 21 is a diagram illustrating a touch panel having a limited viewing area.

FIG. 22 is a diagram illustrating a non-contact touch panel.

FIG. 23 is a diagram illustrating a non-contact touch panel.

FIG. 24 is a diagram illustrating an example using a non-contact touch panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Glass substrate 2 ... Hologram recording film 3 ... Keyboard 4 ... Object light 5 ... Reference light 6 ... Piezoelectric element 7 ... Wavelength selective filter 8 ... Reproduction illumination light 9 ... Reproduction image 10 ... PET protective layer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G06F 3/033 360 G06F 3/033 360C

Claims (6)

[Claims] 1. A hologram input keyboard in which a transparent hologram recording key information of a keyboard is attached to a touch panel, and a hologram reproduction image corresponding to the key information functions as a touch switch. 2. The hologram input keyboard according to claim 1, wherein at least a part of the hologram information is recorded so as to be visible in front of or behind the touch panel. 3. The hologram input keyboard according to claim 1, wherein said hologram is a volume phase transmission hologram. 4. The hologram input keyboard according to claim 1, wherein said hologram is a volume phase reflection hologram. 5. The hologram input keyboard according to claim 1, wherein the key information of the keyboard is information patterned on a scattering plate. 6. The hologram input keyboard according to claim 1, wherein the touch switch is a non-contact type.