JPH03263085A - exhibition equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an exhibition device, and more particularly to an exhibition device that projects an image on an exhibition space, a stage, etc. as a virtual image by reflecting the image on a display device with a half mirror.

[Conventional technology]

2. Description of the Related Art Conventionally, there has been known an exhibition device that projects an image on an exhibition space or a stage where exhibits are displayed, projects a virtual image, and produces a video effect.

FIG. 2 shows an example of a conventional display device (Japanese Patent Application Laid-open No. 84573/1983). According to FIG. 2, a CRT cathode ray tube (hereinafter referred to as CRT) 12, which is a display device for an image 10, is placed in front of an observer 16 with its screen 14 facing upward in the figure.
It is installed in a predetermined location that cannot be seen from the outside. Further, above the CRT 12, a half mirror 18 is placed above the screen 1.
4 at an angle of inclination of 45 degrees. As a result, the image 10 projected on the screen 14 of the CRT 12 is reflected by the half mirror 18 and recognized as a virtual image 20 when viewed from the viewer 16, and this virtual image 20 is also recognized as a virtual image 20 in the exhibition space 22. The images are combined and perceived by the viewer 16 as if they were images within the exhibition space 22. Furthermore, a glass plate 26 is attached to the viewer 16 side of the CRT 12, and this glass plate 26 is fixed to a balance plate 28.

Therefore, the observer 16 can recognize the front 8-self virtual image 20 reflected by the half mirror 18 through the glass plate 26 without looking at the CRT 12.

Furthermore, as another embodiment, there is an exhibition device in which a virtual image can be observed from multiple directions by providing a plurality of the above-mentioned half mirrors (Japanese Patent Application Laid-Open No. 106487/1987).

[Problem to be solved by the invention]

However, the virtual images in conventional exhibition equipment are two-dimensional and flat, so if these virtual images are projected in an exhibition space where three-dimensional exhibits are displayed, they may give the viewer a childish impression. The disadvantage is that it gives an unnatural impression.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an exhibition device that can display a virtual image three-dimensionally.

(Means for Solving Problem ff1) In order to achieve the above object, the present invention provides that the optical axes of the respective image lights are arranged so as to intersect, and each screen has a viewing angle that is approximately equal to the parallax of the human's binocular eyes. a pair of display devices on which an image photographed is projected; a polarizing plate with different polarization characteristics installed in front of each screen of the pair of display devices; and a position where image light from the pair of display devices is combined. a main half that projects a virtual image onto the exhibition space by reflecting the combined image light from the sub-half mirror and combines the virtual image with exhibits installed in the exhibition space; It is characterized by consisting of a mirror and polarized glasses worn by the observer.

[Effect]

According to the present invention, an image photographed at a viewing angle approximately equal to the parallax of human binocular eyes is displayed on each screen (32, 36) of a pair of display devices (30, 34), and these image lights are polarized by polarization characteristics. sub-half mirror through different polarizing plates (42, 44).
(46) and combine this composite image with the main half mirror.
(18). And the main half mirror (1
An observer (16) wears polarized glasses (48) and observes the composite image reflected by 8).

Thereby, the virtual image (50) can be projected three-dimensionally within the exhibition space (22).

〔Example〕

Preferred embodiments of the display device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a main part showing an embodiment of the display device according to the present invention, and the same or similar members as those in the conventional example shown in FIG. 2 are given the same reference numerals and explained. do.

In FIG. 1, the 11cRT301tli surface 32'E is attached to a support stand (not shown) facing upward in the figure. Further, the second CRT 34 is attached to a support stand (not shown) with the screen 36 facing right in the figure, and the optical axis 3 of the second CRT 34 is
8 is installed perpendicular to the optical axis 40 of the first CRT 30. Maegonji 1st CRT30, 2nd CRT34
Each screen 32.36 shows the parallax between human eyes (approximately 63 m).
) is displayed at an angle of view that is approximately equal to the angle of view.

Further, a first polarizing plate 42 and a second polarizing plate 44 are mounted at positions facing each of the screens 32.36, and are provided perpendicular to each optical axis 40.38. Further, the first polarizing plate 42 is a polarizing plate having a polarization characteristic different from that of the second polarizing plate 44 by 90 degrees.

A sub-half mirror 46 is installed at a position perpendicular to the optical axes 38 and 40. This sub-half mirror 46 is
They are mounted at an angle of inclination of 45 degrees to each optical axis 38,40. Further, the sub-half mirror 46 has the first C.
The image light and the second CRT34 shown by the two-dot chain line in the diagram of the RT30
This combined image is projected onto the main half mirror 18 as shown by the three-dot chain line.

The main half mirror 18 is attached at an inclination angle of 45 degrees with respect to the composite image light, and is installed between the exhibition space 22 and the viewer 16. Also, the main half mirror
The composite image projected and reflected by the viewer 18 is recognized by the viewer 16 wearing the polarized glasses 48 as a virtual image 50 projected three-dimensionally within the exhibition space 22. Incidentally, the left and right lenses of the polarized glasses 48 are polarized lenses having different polarization characteristics by 90 degrees.

Next, let's talk about the operation of the display device configured as described above!
! Hustle.

First, each screen 32.3 of the first CRT 30 and the second CRT
6, an image taken at a viewing angle equal to the parallax between human eyes is projected, and the image light is passed through a first polarizing plate 42 and a second polarizing plate 44, each having a different polarization characteristic by 90 degrees, and then reflected by a sub-half mirror 46. Synthesize. Then, the composite image synthesized by the sub-half mirror 46 is projected onto the main half mirror 18. Then, the observer 16 puts on polarized glasses 48 and observes the composite image reflected by the main half mirror 18 . This allows the observer 16 to view the exhibition space 22.
The virtual image 50 can be recognized as if it were three-dimensionally projected inside.

Therefore, according to this embodiment, the three-dimensional virtual image 50 can be synthesized with the three-dimensional exhibit, so the virtual image 50 can be produced without giving the viewer 16 an unnatural image. can.

In the exhibition device in the above example, two polarizing plates 42 and 44 with different polarization characteristics were used, but the invention is not limited to this, and a liquid crystal shutter having alternately ON-OFF shuttering characteristics was used. are synchronized with the frame time of each CRT30.34 and alternately chronologically display each CRT30.34.
Even if the screen is switched and displayed, the virtual image can be projected three-dimensionally.

〔Effect of the invention〕

As explained above, according to the display device according to the present invention, images of the parallax of human eyes taken at approximately the same angle of view are displayed on each image of the pair of display devices, and these images are converted into polarized light having different polarization characteristics. The images are combined using a sub-half mirror through a plate, this combined image is projected onto the main half mirror, and the combined image reflected by the main half mirror is viewed by the viewer wearing polarized glasses. Virtual images can be projected three-dimensionally inside. Therefore, a virtual image can be produced without giving any unnatural impression to the viewer.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of an exhibition device according to the present invention, and FIG. 2 is an explanatory diagram showing an embodiment of a conventional exhibition device. 16... Observer, 18... Main half mirror 22... Exhibition space, 30... 1st CRT. 34...Second CRT, 42.44...Polarizing plate, 46
...Sub half mirror-48...Polarized glasses, 50...
·virtual image. Figure 1

Claims (1)

[Scope of Claims] A pair of displays arranged so that the optical axes of the respective image lights intersect, each display displaying an image photographed at a viewing angle substantially equal to the parallax of human binocular eyes; a polarizing plate having different polarization characteristics installed in front of each screen of the display device; a sub-half mirror installed at a position to combine the image lights from the pair of display devices and combining the image lights; A main half mirror that projects the synthesized image light from the half mirror onto the exhibition space as a virtual image and synthesizes the virtual image with exhibits installed in the exhibition space; and polarized glasses worn by the viewer. An exhibition device characterized by: