JPH04112276U - decorative hologram - Google Patents

Abstract

(57) [Summary] [Purpose] By combining holograms fabricated using conventional methods, the virtual image of the reconstructed image can be seen in a mixture of parts that are observed in front of the hologram and parts that are observed behind the hologram. The observed parts are mixed, giving a unique three-dimensional effect and making it possible to perform a variety of displays. [Structure] A hologram in which a display image is recorded and a reproduced image is formed on the side of the reproduction light source, and a hologram in which a display image is recorded and a reproduced image is formed on the side opposite to the reproduction light source so that they partially overlap. It is characterized by being laminated with.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a decorative hologram that displays a three-dimensional stereoscopic image.

0002

[Prior art and its problems]

When displaying a three-dimensional image using a white light source or laser, one hologram can display various Displaying images requires special techniques such as exposure and development methods. It was.

0003 The present invention was made in consideration of these points, and it is not possible to fabricate it using a normal method. Decorative holograms that can be used to create a variety of displays by combining holograms. The purpose is to provide holograms.

0004

[Means to solve the problem]

The present invention includes a hologram in which a display image is recorded and a reproduced image is focused on the reproduction light source side; A part of the hologram where the display image is recorded and the reproduced image is focused on the opposite side of the reproduction light source. It is characterized by being stacked so that they overlap.

[0005]

[Effect]

A hologram in which the display image is recorded and the reproduced image is focused on the reproduction light source side is a reflective hologram. In the case of a hologram, place the transmission hologram from the reproduction light source side to the front of the hologram. In this case, the reconstructed image is observed at the back of the hologram from the side opposite to the reconstruction light source, and the The hologram in which the image is recorded and the reproduced image is focused on the opposite side of the reproduction light source is a reflective type. In the case of a hologram, place the transmission hologram behind the hologram from the reproduction light source side. In the case of a hologram, the reconstructed image is observed in front of the hologram from the side opposite to the reconstruction light source. In the area where these holograms overlap, the image in the foreground and the image in the back intermingle, Recording many images in this area creates a unique three-dimensional effect, and two hologs In the case of RAM, the reconstructed image can be observed at three different virtual image positions and various displays can be performed. I can do that. As shown in Figure 5(b), when three or more holograms are combined, Furthermore, various displays can be performed.

[0006]

【Example】

Hereinafter, the present invention will be described in detail with reference to the drawings. 1 and 2 are diagrams each showing an optical system during reflection type hologram exposure in Example 1 of the present invention, and FIGS. 3 and 4 are schematic diagrams of essential parts showing reproduction of a decorative hologram in Example 1, respectively. Main part front view, FIG. 5 is a main part front view showing other embodiments, in which (a) is a decorative hologram that is a combination of two holograms, and (b) is a decorative hologram that is a combination of three holograms. shows. Example 1 A decorative hologram in which a reflection hologram 1 and a reflection hologram 2 are stacked so that they partially overlap will be illustrated. (Production of reflection hologram) As shown in FIG. 1, after setting a dry plate 3 coated with, for example, dichromate gelatin as a sensitive material on a glass substrate and each optical device, a laser beam is emitted from a laser oscillator 4. is split into two by a beam splitter 5, and one of the lights passes through a reflecting mirror 6 and a microscope objective lens 7 to illuminate multiple objects 8 ₁ and 8 ₂ with different distances to the dry plate 3 as object illumination light. The dry plate 3 is irradiated.

The other light is split into two by a beam splitter 9, one of which irradiates the dry plate 3 as a reference light via a microscope objective lens 10 and a convex lens 11, and the other light is a reflection mirror 12, a reflection mirror 13, and a microscope objective lens 14. When a plurality of objects 8 ₁ and 8 ₂ are irradiated through the rays, the light reflected by the objects is irradiated onto the dry plate 3 as object light, and interference fringes are formed and recorded.

The dry plate 3 on which interference fringes have been formed in this way is developed by a conventional method to form a reflection hologram 1 in which a three-dimensional image is recorded, and objects 8 ₁ ′, 8 ₂ ′ as shown in FIG. Interference fringes are formed and recorded on the dry plate 3' using the same apparatus as in FIG. 1, except that . (Preparation of decorative holograms) The two reflection holograms obtained in this way are used for reflection hologram 1, with the AA' plane on the reference light side at the time of exposure facing the reproduction light source side, and reflection hologram 2, at the time of exposure. The AA' side on the reference light side is on the opposite side from the reproduction light source side, and the overlapping parts (shaded parts) are laminated with epoxy resin adhesive to create a decorative hologram 15 on glass or a wall. Attach to a base 16 such as. (Reproduction) When the decorative hologram 15 thus obtained is irradiated with light from the reproduction light source 17 such as a white light source or a halogen lamp, the light from the reproduction light source 17 is emitted as shown in FIGS. 3 and 4. The reflection hologram 1 diffracts the object images 19 ₁ , 19 ₂ as virtual images, which are further back than the hologram, and the reflection hologram 2 diffracts the object images 20 ₁ , 20 ₂ as virtual images, which are in front of the hologram. , each clearly observed by the human eye21. In the overlapped area (the shaded area in Figure 4), the reconstructed virtual images are located in front of the hologram and in the back of the hologram, and as a whole, more diverse 3D images are visible. It is something. Example 2 A decorative hologram in which a transmission hologram and a transmission hologram are stacked will be illustrated.

[0009] Dry the reference light from the same side as the object light, that is, the reference light in Figures 1 and 2 from the opposite left side. The plate was irradiated, and two transmission holograms were produced in the same manner as in Example 1. The two transmission holograms obtained by On the opposite side from the reference light when the light is on, there are some overlapping parts (shaded areas in Figure 4). The reflective hologram shown in Figure 3 is a decorative hologram made by laminating with epoxy resin adhesive. At the position of hologram 1 and reflection hologram 2, When attached to the base 16 and irradiated with light from a reproduction light source 17 such as a laser, the human eye 21' Each can be clearly observed.

0010 Other examples As shown in Figure 5(a) (reconstructed image omitted), two reflective holograms or two One of the transmission holograms is hologram 1, which has a hollow shape with part 2 hollowed out. , the other is a hologram 2 having an outline up to the shaded part, and a decoration made by laminating these holograms. Hologram 15 and three reflective holograms as shown in Figure 5(b) (reconstructed image omitted) A decorative hologram made by stacking three transparent holograms 1, 2, and 1' on top of each other. 15, etc., as in the first and second embodiments, various displays can be performed. Especially Figure 5 In the example shown in (b), there are 3 types of non-overlapping parts, 3 types of parts where 2 sheets overlap, and 3 sheets. A total of seven different types of display can be performed, with one type of overlapping portion.

[0011] Although the above embodiments have been explained using preferred embodiments, the present invention is not limited to these embodiments. Various applications are possible. In Examples 1 and 2, the reproduced images will be explained using simple images and the smallest number of images. However, it is difficult to create holograms that record a variety of complex images and many virtual images at different positions. Then, various stereoscopic images and virtual images can be viewed at different positions, which is more preferable.

0012 Applications include glass, transparent materials such as transparent plastic, walls, partitions, It can be used by attaching it to an opaque member such as a pillar by pasting, gluing, etc. For example, it can be attached to windows, doors, partitions, walls, pillars, etc. for buildings and vehicles such as automobiles. It can be widely applied to decorations, advertising displays, etc.

[0013]

[Effect of the idea]

The decorative hologram of this invention is a combination of holograms produced by conventional methods. By adjusting the display angle, a unique three-dimensional effect can be created and a variety of displays can be performed. It is suitable as a decorative display.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an optical system during reflection type hologram exposure in Example 1 of the present invention.

FIG. 2 is a diagram showing an optical system during reflection type hologram exposure in Example 1 of the present invention.

FIG. 3 is a schematic diagram of a main part showing reproduction of a decorative hologram in Example 1.

FIG. 4 is a front view of main parts showing reproduction of the decorative hologram of Example 1.

FIG. 5 is a front view of main parts showing another embodiment of the present invention, in which (a) shows a decorative hologram in which two holograms are combined, and (b) shows a decorative hologram in which three holograms are combined.

[Explanation of symbols]

1, 2 Reflection hologram 3, 3' Dry plate 15 Decorative hologram 17 Reproduction light source 19 ₁ , 19 ₂ , 20 ₁ , 20 ₂ Reconstructed image

Claims (1)

[Scope of utility model registration request] 1. A hologram in which a display image is recorded and a reproduced image is formed on the side of the reproduction light source, and a hologram in which a display image is recorded and the reproduced image is formed on the side opposite to the reproduction light source. A decorative hologram characterized by overlapping layers.