JPH1195707A - Window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a window displaying a special effect by closing an opening part with transparent closing member and using a transparent plate fitting a spatial phase modulation type optical mask generating the image of an object when irradiated with a divergent or convergent coherence light as the closing member. SOLUTION: An opening part is closed by a transparent closing member 12 and a transparent plate 14 fitting a spatial phase modulation type optical mask 13 generating an objective image when irradiated with a divergent or convergent interfering light is used as the closing member 12. That is, a window consists of a rectangular frame forming the opening part and the closing member 12 closing it. The closing member 12 is constituted so as to hold a film like optical mask 13 between two sheets of the transparent plates 14. Then, this window is constituted so as to view e.g. a Christmas tree and point light sources fitted to it through the closing member 12. Thus, marks and characters hidden in the optical mask 13 are viewed so as to float up to the surface around the respective light sources.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window, such as a sight glass or a window, which is installed so that an object can be seen through glass.

[0002]

Heretofore, a transparent glass plate has been used for a viewing window installed in an amusement park or the like or a window of a store or the like in order to close an opening thereof. Such windows are designed to look inside from the outside, but the only way to improve the display effect is to devise the items displayed inside.

On the other hand, Japanese Patent Publication No. 53-38927 discloses a spatial phase modulation type optical mask which produces an image of an object when irradiated with divergent or convergent coherent light. Specifically, the optical mask is manufactured by performing a Fourier transform of the character to obtain a complex amplitude and obtaining a set of small sections so that the light of the point light source forms an image of the character on the opposite surface through the optical mask. The disclosed optical mask is interesting in that when a point light source is seen through it, certain characters appear to emerge.

The present invention has been made based on such circumstances and background, and has as its object to provide a window that exhibits a special effect by using the above-described optical mask.

[0005]

In order to achieve the above-mentioned object, the present invention provides a window having an opening closed by a transparent closing member, which irradiates divergent or converging coherent light as the closing member. And a transparent plate provided with a spatial phase modulation type optical mask that produces an image of the object when the image is formed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory view showing a use state of a window according to the present invention. The window 10 includes a rectangular frame 11 forming an opening and a closing member 12 closing the frame. The closing member 12 is a film-shaped optical mask 13 as shown in FIG.
Is sandwiched between two transparent plates 14. As the transparent plate 14, a plate glass, an acrylic plate, or the like can be used.

The optical mask 13 used here is the same as described above. However, the optical mask described in JP-B-53-38927 is mainly drawn on a silver halide material by a plotter, and the manufactured optical mask is opaque due to an antihalation layer indispensable for a silver halide film base. This is inconvenient when viewing characters, pictures, and the like formed in small sections of the optical mask in the form of glasses for illumination and the like.
Therefore, in the present invention, an optical mask made of a diazo film having no antihalation layer (for example, “AK diazo film” manufactured by Kimoto Corporation) is used. And when manufacturing the optical mask 13 in large quantities,
A diazo film may be exposed and developed in a clean room using an optical mask of a silver halide film, and then copied. According to this method, an image is formed using a coloring material having high transparency and little fringe on a transparent base, so that the optical mask 13 serving as a bright filter is formed.
Can be manufactured.

The window 10 is used in situations where a point light source (spotlight, car spotlight, etc.) is viewed through the closure member 12. In the example shown in FIG. 1, the Christmas tree 20 and the point light source 21 attached to the Christmas tree 20 are viewed through the closing member 12. When the Christmas tree and the point light source 21 are viewed through the closing member 12 in this manner, the marks and characters hidden in the optical mask 13 appear to be raised around each point light source 21. Further special effects can be obtained by increasing the number of point light sources 13 or blinking them.

In the window of the present invention, it is preferable that the closing member 12 has a function of preventing ultraviolet rays and dew condensation depending on the installation location.

[0011]

As described above, in the window of the present invention, when a point light source is viewed through a closing member, characters and marks appear to be raised around the point light source. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a use state of a window according to the present invention.

FIG. 2 is a perspective view showing a configuration of a closing member.

[Explanation of symbols]

 Reference Signs List 10 window 11 frame 12 closing member 13 optical mask 14 transparent plate

Claims (2)

[Claims] 1. A window whose opening is closed by a transparent closing member, wherein the closing member is a spatial phase modulation type optical mask that produces an image of an object when irradiated with divergent or convergent coherent light. A window characterized by using an attached transparent plate. 2. The window according to claim 1, wherein the optical mask is made of a diazo film.