JPS60156087A - Production for relief pattern - Google Patents

Abstract

PURPOSE:To obtain a hologram having a pattern looking raised in a wide visual range with a simple method by combining a rainbow hologram of a diffusing plate, which is produced in the two-step rainbow hologram production method, and a mask having a pattern and subjecting them to exposure and development onto photosensitive materials by a laser light. CONSTITUTION:The light from a laser is made incident on the diffusing plate, and the reflected light and a light interfering with it are allowed to interfere with each other on hologram photosensitive materials 23 to record interference fringes. The light in the direction opposite to that of the light which interferes the hologram having interference fringes is made incident to focus the image of diffusing plate, and photosensitive materials are put in the position of this image, and it is allowed to interfere with the light from another laser, and another interference fringes are recorded, and they are developed obtain a rainbow hologram 13' of the diffusing plate. A pattern mask 19 is placed on the hologram 13', and it is exposed onto hologram photosensitive materials 23 through a spacer 21 from the direction of the producing light of the hologram 13' by a light 25 to form interference fringes on materials 23, and they are recorded and developed to obtain the hologram having the pattern looking raised.

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, there is a method using a one-step rainbow hologram or a two-step rainbow hologram to make patterns and characters appear floating in front of one display board. In the one-step rainbow hologram method, an image of the pattern is focused on a hologram plate using a lens, and interference fringes between this image and a reference beam are recorded, so the aperture of the lens determines the viewing area. Therefore, it is not possible to create a pattern with a wide viewing range unless a large-diameter lens is used.

In addition, in the method of using a two-step rainbow hologram, a Fresnel hologram of the pattern is created once, and this hologram is reproduced to create a hologram of the image of the pattern.

This will require a large amount of time.

This invention eliminates these drawbacks and has a wide viewing range.
This is a method for easily producing a pattern that appears to be floating.

A combination of a rainbow hologram on a diffuser plate created using the method of creating a quick-step rainbow hologram, and a mask with a pattern.

A hologram photosensitive material such as photoresist is exposed at a short distance via a spacer using a laser beam.
This is a hologram that can then be developed, and when the hologram thus obtained is illuminated with white light such as sunlight, a floating pattern can be seen in a rainbow color in a wide viewing area. Regarding the manufacturing method.

The present invention will be described in detail below with reference to FIGS. 1 to 5.

First, we will discuss the method for producing a rainbow hologram on a diffuser plate. Here, we will discuss how to create a rainbow hologram on a diffuser plate using a two-step method. Figure 1 shows step 1.

The light (1) from the laser is incident on the diffuser plate (3), and the light (5) reflected from the diffuser plate (3) and the light (7) that interferes with this are reflected on the holographic photosensitive material (9). let me interfere,
Interference fringes are recorded on this photosensitive material (9). Next, step 2 is shown in FIG. Light (8) is applied to the hologram (9)' on which the interference fringes were recorded in step 1 from the direction opposite to the light (7).
When the light is made incident, the r-elephant of the diffuser plate is connected to the position 1 where the diffuser plate 13) was placed. This position (new at 111,
A hologram photosensitive material α3 is placed and interfered with light tt51 from another laser, and its interference fringes ζ are recorded. This was developed to create a rainbow hologram (131') on the diffuser plate.
I got it.

This hologram (13) is used to create a floating pattern.

The hologram (131' is the third
As shown in the figure, it has a spread of θ in the lateral direction, and this size means that the hologram (9)' has a large turn in the lateral direction, and when white light is input, the light is separated into rainbow colors. becomes.

Place the rainbow hologram +131' of the diffuser plate thus prepared in the position shown in Fig. 4, and place the pattern mask (191) on top of it. When the material (231) is exposed with a light (2ω) from the light (19 direction), a hologram f131' of the diffuser plate is made, the diffracted light (2
Interference fringes are formed on the hologram photosensitive material (c) due to interference between the light passing through 7) and without being diffracted. Record this,
Hologram (c) with 9 patterns after development processing
Get 1. As shown in Fig. 5, when the hologram thus obtained is illuminated with white light Gυ from the opposite side, the eye can be seen at the position (c) where the hologram (9)' was placed.
When placed, pattern 11.91' can be seen floating at the position where pattern mask a9 was.

According to the present invention, a hologram with a pattern that appears to stand out in a wide viewing range can be created by a simple method, and can be used in the field of displays, making it extremely effective industrially.

〔Example〕

As a laser beam, 488 nm of argon laser is used.
As a holographic photosensitive material, it uses the following light.

Product name: 10E manufactured by Agfagewald (West Germany)
A Fresnel hologram of a diffuser plate was made using 56, and the hologram was reproduced using the above-mentioned company's product name: 8E5.
A rainbow hologram of a diffusion plate was prepared by recording a hologram on a 6HD dry plate.

Product name: Made by Spree (USA) using this rainbow hologram and a pattern mask cut out of paper;
A glass dry plate coated with AZ1350 photoresist to a thickness of 1 μm was exposed to laser light having a wavelength of 4'57.9 nm to produce a pattern that appeared to be floating on the glass dry plate. Also.

Furthermore, a nickel stamper was made from the hologram thus obtained, and by heat-setting it on vinyl chloride, inexpensive and large quantities of hologram replicas were also made.

゛°4. Brief description of the drawings The drawings illustrate the present invention. Figures 1 and 2 are explanatory diagrams showing the process of producing a rainbow hologram of a diffuser plate. Figure 1 shows step 1. Figure 2 shows step 2, Figure 6 is an explanatory diagram showing this rainbow hologram, Figure 4 is an explanatory diagram of the process of exposing the rainbow hologram and pattern mask, and Figure 5 is an explanatory diagram of the completed book. It is an explanatory view of a hologram of a floating pattern.

fll, (51, (7), (8), (15
1, (251...(laser) light (3)...diffusion plate (91, (131, n...hologram photosensitive material f91)
', (131', +23)'... Hologram (II... Pattern mask (21+... Spacer (5)... Diffracted light (311... White light (33)... Eye patent Applicant Toppan Printing Co., Ltd. Representative Kazuo Suzuki Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 4″′ ♂/9′

Claims (1)

[Claims] 1) Creating a rainbow hologram on a diffuser plate using a two-step rainbow hologram manufacturing method, using this rainbow hologram and a pattern that allows light to pass through, exposing a holographic photosensitive material at a distance and developing it. A floating pattern production method characterized in that a pattern floats in front of a hologram to obtain a rainbow-colored hologram.