JPH03221008A - Display device for display object - Google Patents

Abstract

PURPOSE:To make an object to be displayed and its explanatory information visible at the same time by arranging a reflection type hologram between the object to be displayed and an observer. CONSTITUTION:In a showcase 9, a reflection type hologram 5 is arranged between an object 1 to be displayed and an external observer 3. A display device 6 is embedded in a pedestal 10 and directed to the hologram 5. A display demand switch 7 is arranged on the pedestal 10 outside the showcase 9. The observer can see the object 1 through the reflection type hologram 5. When the display demand switch 7 is pressed, arrows pointing various parts of the object 1 and images 11 of the explanatory sentences for those points are displayed by the diffraction of the hologram 5. The real object 1 displayed and the images 11 of the explanatory sentences are displayed in overlapped condition in the same field of vision. As a result, the characteristics of the displayed object are effectively explained by directly pointing and comparing various parts of the object.

Description

[Detailed Description of the Invention] [Summary: Regarding an exhibition display device suitable for explanations of products and exhibits in museums, art galleries, etc., an exhibition display device that allows both the exhibits and their explanatory information to be viewed at once is realized. The object of the present invention is to have a reflective holographic optical element disposed between an exhibit and a user, and a display device for displaying information regarding the exhibit is disposed toward the reflective holographic optical element. The reflection type holographic optical element is an optical element that diffracts one or more wavelengths out of the wavelengths outputted by the display device, so that the reflection type holographic optical element can be used as a display device. The system is configured to diffract the information displayed on the screen and form an image within the user's visual field.

[Industrial application field]

The present invention relates to an exhibition display device suitable for explaining products and exhibits at museums, art galleries, etc.

[Prior Art] FIG. 6 is a perspective view showing a conventional exhibition display device. l
1 is an exhibit such as a vase, 2 is a display device for explaining the exhibit 1, and 3 is a user. User 3 is
By observing the exhibit 1 and looking at the display device 2 such as a CRT, it is possible to know the explanation regarding the exhibit 1.

A VTR and a computer V are connected to the display device 2, and information stored in the VTR and computer V is displayed.

In this way, in conventional exhibition equipment, a CR is placed next to exhibit l.
A display device 2 such as T is installed to display information 4 regarding the exhibit 1. Alternatively, a method of using panels has been adopted.

(Problem to be Solved by the Invention) However, in such an exhibition method, even if the exhibit 1 and the display device 2 are arranged close to each other, the user cannot read the explanatory text 4 of the exhibit 1 and the display device 2. This is inconvenient for the user, as the user has to look at the screen alternately, and the moving angle θ of the line of sight is large.

In particular, when it came to detailed explanations or complex explanations, the above-mentioned complexity became an obstacle to understanding the exhibits. For example, when explaining the interrelationship between one part of an exhibit and another part, users have to look around frequently, which creates an inconvenience that makes it difficult to understand. .

A technical object of the present invention is to address such problems and to realize an exhibition display device that allows viewing of both an exhibit and its explanatory information at the same time.

[Means for Solving the Problems] FIG. 1 is a side view illustrating the basic principle of an exhibition display device according to the present invention. 1 is an exhibit, 3 is a user, and a reflection holographic optical element (hereinafter abbreviated as "reflection hologram") 5 is disposed between them.

The display device 6 displays '#! This is a device that displays information such as explanations regarding At, and is placed facing the reflection hologram 5.

The reflection hologram 5 is an optical element that diffracts one or more of the wavelengths output from the display device 6 toward the user 3 side.

The display device 6 is directed toward the reflection hologram 5, and the information displayed on the display device 6 is diffracted by the reflection hologram 5 and displayed within the field of view of the user.

[Effect]

Normally, that is, when the display device 6 is not displaying, the user 3 can see through the reflection hologram 5,
You can freely view Exhibit 1 only.

When the display device 6 is displaying, the display state is diffracted toward the user 3 by the reflection hologram 5. Moreover, since the reflection hologram 5 is placed between the exhibit l and the user 3, the user 3 can
In the same field of view as exhibit 1, images of information such as explanatory text appear to overlap.

As a result, the user 3 is freed from the hassle of observing the exhibit 1, then shifting his/her line of sight and reading an explanation on a display device, panel, or the like.

Further, since this display can only be seen by the user 3 in the direction in which the display image is diffracted by the reflection hologram 5, when the user 3 reads the explanation on the display device 6, other users may There is no obstacle to observing 1.

Note that it is more effective if the display device 6 is made operable in response to a request from the user 3 instead of being kept in operation all the time. For this purpose, if the display request switch 7 is provided as in the invention of claim 2 so that the display device can be selectively operated and used according to the user's request, the user 3 can press the display request switch. Only when operated, the display device 6 operates and the explanation of the exhibit 1 can be read.

Note that when the display request switch 7 is operated, the control device 8
, and necessary information is displayed on the display device 6.

Next, the operation of the reflection hologram 5 will be explained based on FIG. (a) is a CRT used as the display device 6
(b) is a diagram showing the spectral characteristics of the reflection hologram 5 used in the present invention.

Looking at the spectral characteristics of CRT, we see that around 490nm (blue), around 550r+m (green) and 617nm (red).
Nearby output is noticeable.

Therefore, in order to produce a reflection hologram, it is designed so that at least one of these colors can be efficiently diffracted. For example, if it is a hologram that diffracts green light, (
b) As shown by the solid line in the figure, the design is such that the transmittance is low (the reflectance is high) near 550 nm (green).

Similarly, if blue light is to be diffracted, the transmittance in the vicinity of 490 nm should be low, as shown by the broken line, and if red light is to be diffracted, the transmittance should be low as shown by the dashed line.
It may be designed so that the transmittance near m is low.

In this way, by setting the transmission wavelength range of the reflection hologram, one color or multiple colors of light emitted by the display device can be selectively and efficiently diffracted toward the user 3. .

[Example] Next, how the exhibition display device according to the present invention is actually implemented will be explained using an example. FIG. 3 is a perspective view showing a first embodiment of the present invention. The exhibit 1 is stored in a showcase 9 and is to be observed by a user 3 from the outside.

A reflection hologram 5 is disposed inside the showcase 9 between the exhibit 1 and the external user 3. In the showcase 9, a display device 6 is embedded in a pedestal 10 and is directed toward the reflection hologram 5. Outside the showcase 9, a display request switch 7 is arranged on a pedestal 10.

FIG. 4 shows another embodiment. In this embodiment, a reflection hologram 5 is directly attached to the wall surface of a showcase 9. Therefore, the presence of the reflective hologram 5 does not bother the user 3's eyes, and the user's 3 field of view can be expanded.

The display device 6 is disposed outside the showcase 9 and is directed toward the reflection hologram 5. A display request switch that inputs a display request signal to the control device 8 of the display device 6 is arranged on a pedestal 10 outside the showcase 9.

FIG. 5 shows a display state when the display device 6 is operated in response to a display request switch in the apparatus of the present invention.

Users can observe the exhibit l through the reflection hologram. When you press the display request screener, the diffraction effect of the reflection hologram 5 causes an image 1 of arrows pointing to each part of the exhibit 1 and explanatory text regarding that part to be displayed, for example, as shown in the figure.
1 is displayed. In this way, the image 11 of the actual object (exhibit l) and its explanatory text can be displayed superimposed within the same field of view, so that each part of exhibit l can be directly pointed to and explained or compared. Can effectively explain the characteristics of objects.

Further, since the reflection hologram 5 can have the function of a magnifying lens, the display device 6 can be made smaller by magnifying and diffracting the image output from the display device 6.

Although the reflection hologram 5 in the above embodiment is composed of one sheet, two or more reflection holograms may be stacked together. For example, by overlapping a reflection hologram that diffracts blue light and a reflection hologram that diffracts red light,
A reflection hologram that diffracts both blue and red can be constructed.

〔Effect of the invention〕

As described above, according to the present invention, the displayed object 1 can always be observed through the reflection hologram 5, and since the displayed content of the display device is diffracted by the reflection hologram 5 toward the user, the user From here, you can visually see the display contents superimposed on exhibit l. Therefore, since you can see both exhibit 1 and its explanation within a narrow field of view near exhibit 1, you can easily understand the information related to exhibit 15, especially if it is a complicated explanation or This is effective when comparing and explaining the interrelationships of each part of the exhibit 1. Moreover, there is no need to place display devices or panels near exhibit 1 as in the past, so the layout is cleaner and
It also takes up less space.

By providing the display request switch 7, it is possible to selectively utilize the display only when an explanation using the display device is required.

[Brief explanation of drawings]

FIG. 1 is a side view explaining the basic principle of the exhibition display device according to the present invention, FIG. 2(a) is a diagram showing the spectral characteristics of a CRT, and FIG. Figure 3 is a perspective view showing the first embodiment of the present invention, Figure 4 is a side view showing the second embodiment of the present invention, and Figure 5 is a diagram showing the spectral characteristics of the exhibition display device of the present invention. FIG. 6 is a perspective view of a conventional exhibition display device. In the figure, 1 is an exhibit, 2 is a conventional display device, 3 is a user, 5 is a reflective hologram, 6 is a display device, 7 is a display request switch, 8 is a control device, 9 is a showcase, 10
11 indicates a pedestal, and 11 indicates an image of display contents. Patent Departure Hole Fujitsu Co., Ltd. Sub-Agent Patent Attorney Yasushi Fukushima Textbook Sent ω Grave Bo θ Burial 112] □ Distance 8 (nm) CRT and ゛Horijira IAty + Newo 14・Pressure vJ2
Eye second cusp seat cup 11 嶌 5 figure conventional ωtaho tears right station

Claims (1)

[Claims] 1. It has a reflective holographic optical element (5) disposed between the exhibit (1) and the user (3), and displays information regarding the exhibit (1). The display device (6),
The reflective holographic optical element (5) is disposed toward the reflective holographic optical element (5), and the reflective holographic optical element (5) has one or more wavelengths out of the wavelengths output by the display device (6). By using the reflective holographic optical element (5) as an optical element that diffracts the information displayed on the display device (6), the information displayed on the display device (6) is diffracted and an image is formed within the visual field of the user (3). An exhibition display device characterized by comprising: 2. At the request of the user (3), the display device (6)
2. The exhibition display device according to claim 1, further comprising a display request switch (7) for operating the display device (6) so that the display device (6) can be selectively used.