JPH06195019A - Holographic ornament - Google Patents

Abstract

PURPOSE:To display desired graphics, patterns, etc., freely and sharply in their peripheral parts and to allow visually observe from over a wide range by light from a light source for reconstruction existing in a specific position or to allow visually observe by light from a light source for reproduce varying in incident angle over a wide range by displaying reflection type holograms by masking or blanking the holograms. CONSTITUTION:The holographic ornament is formed by adhering a tape which is adhered with an opaque masking tape 3 of black, etc., and a transparent double coated adhesive tape 4 and is blanked with characters, etc., to the hologram with a protective tape formed by laminating the first hologram 1 and the second hologram 2 and adhering the protective tape 6 to the first hologram, then trimming the peripheral part and adhering these holograms to a substrate 5. The light is diffused and reflected over a wide range of + or -20 deg. and the light source is visibly observed to be bright and sharp in the periphery from a wide range of observers 8 as if the light source exists on the front surface of the holograms when the light from the light source 7 for reproduction is irradiate on the holographic ornament.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a window glass or vehicle body for automobiles, a window glass for construction, a building wall, a partition, furniture, a toy, etc. Regarding holograms.

[0002]

2. Description of the Related Art A hologram display uses a display to specifically record a stereoscopic image or a planar image to be displayed. However, figures, patterns, etc. are fixed and images other than the recorded image are fixed. No display can be made. Also, it becomes unclear whether the peripheral part is the display part or the non-display part,
It was unavoidable to feel vague.

Therefore, the applicant of the present application proposed, as Japanese Patent Application No. 4040359, an ornament in which one hologram is masked or the hologram itself is cut out to display a design such as characters, figures and patterns.

However, although this ornament is suitable for displaying light from a specific direction at a specific position, the light from the reproducing light source located at the specific position can be visually recognized from a wide range or from a wide range of reproducing light sources. It was not sufficient to visually recognize the light at a specific position.

The present invention has been made in view of the above points, and it is possible to freely display a desired figure, pattern, etc., and sharply display a peripheral portion, and to display light from a reproducing light source at a specific position. On the other hand, it is an object of the present invention to provide a holographic ornament that is visually recognized in a wide range or is visually recognized in a specific position with respect to light from a reproduction light source whose incident angle is changed in a wide range.

[0006]

In the holographic ornament of the present invention, a plurality of reflective holograms that diffract in different directions with respect to light from a reproducing light source provided at a specific position are laminated or Characters, figures, patterns, etc. can be created by masking a part of the hologram that is a stack of multiple reflection holograms that diffract in the same specific direction with respect to the light from the reproducing light source at different positions, or by cutting out the hologram itself. It is preferable that the reflection hologram is diffused and reflected with respect to the light from the reproducing light source.

[0007]

Since the holographic ornament of the present invention masks the reflective hologram or cuts it out and displays it, a desired character, figure, pattern or the like can be easily formed, and the peripheral portion is Since it is masked, it can be visually recognized in the sharp shape, and in the case of a hologram in which a plurality of reflection holograms that diffract in different directions with respect to the light from the reproduction light source provided at a specific position are stacked, , It is visually recognized in a wide range with respect to the light from the reproduction light source located at a specific position. For example, when a hologram is provided on a window glass for construction, a partition, etc., and the light from the reproduction light source located at the specific position is irradiated, a wide range is obtained. You can see the design such as letters and figures. In addition, when a plurality of reflection holograms that diffract in the same specific direction with respect to the light from the reproducing light source at different positions are stacked, the light from the reproducing light source in a wide range is visually recognized from the specific direction. For example, by providing a hologram on a rear window glass for an automobile, the design can be visually recognized from a following vehicle even if the altitude of the sun changes when the sunlight is irradiated.

Further, by illuminating the reflection hologram with various light sources such as white light, it is possible to display from the light source side as bright and clear as if the light source were on the hologram surface. In particular, if the hologram is diffused and reflected, a character or the like can be viewed brightly from a wide area on the light source side as if the entire display portion were emitting light.

In this case, if the protective film of the hologram is made opaque, there is no light transmitted through the hologram portion, and efficient display is possible. If the protective film is made transparent, the other side can be seen through the hologram. Various displays can be performed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. 1 and 2 are a side view and a plan view of a main part of a holographic ornament according to a first embodiment of the present invention, and FIGS. 3 to 5 are views showing an optical system during exposure in the first embodiment. 3 is a master hologram, FIG. 4 is a first hologram, FIG. 5 is a view showing an optical system for producing a second hologram, and FIGS. 6 and 7 are side views of the main part showing the holographic ornament of Example 2. FIG. 8 is a plan view of a main part, FIG. 8 is a diagram showing an exposure optical system for producing the first hologram and the second hologram in the second embodiment, and FIG. 9 is a side view of the main part in the third embodiment.

Example 1 Characters, figures, patterns, etc. are masked by masking a part of a hologram formed by laminating a plurality of reflection holograms that diffract in different directions with respect to light from a reproducing light source provided at a specific position. An example of an ornament that displays the design will be illustrated. (Production of reflective hologram) The reproduction condition is that a white light source is used as a reproduction light source, and when the incident angle θ _i is 45 °, the diffraction angle θ _d1 of the first hologram is + 10 ° (the hologram method). The angle with the line and diffracts above the normal line) and the diffraction angle θ _d2 of the second hologram is -10 ° (represents the angle with the normal line of the hologram and diffracts below the normal line). The first hologram and the second hologram are produced under the condition of diffraction.

After a dry plate 11 having a silver salt or the like applied as a sensitive material on a glass substrate is set together with each optical device as shown in FIG. 3, for example, an argon laser oscillator 1 is used.
When light with a wavelength of 2 to 514.5 nm is oscillated, it is split into two directions by the beam splitter 13, one of which is collimated through the microscope objective lens 14, the pinhole 15 and the concave mirror 16 and the other is Diffuse light enters the dry plate 11 through the reflecting mirror 17, the microscope objective lens 18, the pinhole 19, and the diffusive reflecting plate 20 to form interference fringes. After that, the master hologram 21 is obtained by performing a normal development process.

Next, polyethylene terephthalate (P
ET) base (hereinafter abbreviated as base PET)
Vinyl pentamers such as pentaerythritol triacrylate, trimethylolpropane triacrylate, and triethylene glycol diacrylate, and mixtures of methyl methacrylate and methacrylic acid, cellulose acetate succinate, saturated polymers such as polyvinyl alcohol, or unsaturated Photopolymerized with a mixture of unsaturated polymer such as polyether ester as a main component, a mixture of a sensitizer and a photopolymerization initiator, if necessary, and irradiation with laser light or ultraviolet rays. The dry plate 22-1 obtained by sticking a polymer as a sensitive material to another exposure substrate such as glass is used together with the master hologram 21 obtained by the above-mentioned method, together with each optical device as shown in FIG. Normal and dry plate normal Degrees (incident angle of light forming the reproduction real image) theta _s1 to 10 °, after setting the incident angle theta _r1 of the reference beam such that the 45 °, for example from an argon laser oscillator 23 having a wavelength of 514.5nm light When it oscillates, it is split into two by the beam splitter 24. One light is diffused light (light forming a reproduced real image) through the microscope objective lens 25, the pinhole 26, the concave mirror 27, and the master hologram 21, and the other light is a reflecting mirror. As a divergent light (reference light), it is incident on the dry plate through the microscope objective lens 28, the microscope objective lens 29, and the pinhole 30, and interference fringes are formed. After that, the normal development processing is performed to obtain the first hologram 1.

Next, as shown in FIG. 5, another dry plate 22-2 having a substrate such as glass coated with a photopolymer as a sensitive material is used together with the master hologram 21, and the same optical equipment shown in FIG. First, except that the angle formed by the normal line of the hologram 21 and the normal line of the dry plate (the incident angle of the light forming the reproduced real image) θ _s2 is 10 ° and the incident angle θ _r2 of the reference light is 45 ° The second hologram 2 is obtained by performing the exposure with the same arrangement as the hologram exposure. (Preparation of ornament) A protective tape in which the first hologram 1 and the second hologram 2 obtained by the above-mentioned method are laminated and a protective tape 6 is adhered to the first hologram 1 as shown in FIGS. 1 and 2. An opaque masking tape 3 such as black and a transparent double-sided adhesive tape 4 are adhered to the attached hologram, characters and figures are cut out, and the peripheral portion is trimmed and adhered to a substrate 5 such as glass. Get a graphic ornament. (Reproduction) When the holographic ornament thus obtained is irradiated with light from a reproduction light source 7 such as a white light source or a halogen lamp as shown in FIG. 1, the first hologram 1 and the second hologram 2 cause Although the light is diffracted to the light source side, the first hologram has a second angle in the direction of the diffraction angle θ _d1 .
Holograms are diffracted in the direction of the diffraction angle θ _d2 , respectively, and the hologram in this embodiment is approximately plus or minus 20.
An observer with a wide range of 8 °
As if the light source was on the hologram surface, it was bright, and the green letters as shown in FIG. 2 could be visually recognized in the sharp surroundings.

Embodiment 2 A hologram, which is a stack of a plurality of reflection holograms diffracting in the same specific direction with respect to light from reproducing light sources located at different positions, is cut out to display designs such as characters, figures and patterns. An example of the ornament that is made to perform is illustrated.

(Production of Reflective Hologram) As shown in FIG. 8, a master hologram 21 was produced by the same method as in Example 1, and a glass plate 31 coated with a photopolymer as a photosensitive material was formed on another glass substrate. After setting each optical device such that the normal line of the master-hologram 21 and the normal line of the dry plate coincide with each other and the incident angle θ _r of the reference light is 50 °, for example, the argon laser oscillators 32 to 514.
When light with a wavelength of 5 nm is oscillated, it is divided into two by the beam splitter 33, and one light is diffused light (light forming a reproduced real image) through the microscope objective lens 34, the pinhole 35, the concave mirror 36, and the master hologram 21. The other light is incident on the dry plate as divergent light (reference light) through the reflecting mirror 37, the microscope objective lens 38, and the pinhole 39, and interference fringes are formed. After that, the normal development processing is performed to obtain the first hologram 1.

Using the same optical equipment, the second hologram 2 is obtained by exposing the same with the same arrangement as the first hologram exposure except that the incident angle θ _r of the reference light is 25 °. (Preparation of ornament) The first hologram 1 and the second hologram 2 obtained by the above-mentioned method are laminated, and the protective tape 6 is adhered to the back side and the double-sided adhesive tape 4 is adhered to the front side, as shown in FIG. As shown in FIG. 7, a holographic ornament is obtained by cutting out a desired shape such as letters and adhering it to a substrate 5 such as plate glass. (Reproduction) When the holographic ornament thus obtained is irradiated with light from a reproduction light source 7 such as sunlight as shown in FIG. 6, the first hologram 1 and the second hologram 2 cause the light source to reach the light source side. Although diffracted, the hologram in this embodiment has a diffraction angle of 0 even when the incident angle θ _i1 of the reproducing light source is approximately 60 °, θ _i2 is approximately 15 °, and even when the incident angle θ _i1 is approximately 15 °. It can be always seen by the observer 8 in the direction of (degree direction of the substrate), and if it is attached to the window glass for the building, the characters etc. will change even if the altitude of the sun changes from the observer 8 in a fixed direction outside. Can be visually recognized.

Embodiment 3 Designing characters, figures, patterns, etc. by masking a part of a laminate of a plurality of reflection holograms diffracting light from reproducing light sources at different positions in the same specific direction. An example will be illustrated when an ornament produced by the same method as that of the second embodiment is attached to a laminated glass used for a window glass for a vehicle.

A wide opaque decorative film 9 called a black frame is formed by screen-printing a ceramic paste on a substrate 5'which is a plate glass on the outer side of the vehicle. The inner side of the vehicle at a position corresponding to the opaque film is formed. On the substrate 5 to be plate glass, a portion corresponding to the shape of characters, figures, etc. is blanked, and a ceramic paste is screen-printed, and the plate glass on the inside of the vehicle is fired at the same time when bending and heating, so that characters, figures, etc. A masking member 3 having no film is formed on the portion.

Next, with the first hologram 1 and the second hologram 2 obtained by the same method as in the second embodiment temporarily adhered to the substrate 5, the polyvinyl chloride is provided between the two substrates 5, 5 '. A holographic ornament as shown in FIG. 9 is obtained by inserting an intermediate film 10 of butyral or the like and performing an ordinary matching process by an autoclave.

When the ornament thus obtained is irradiated with light from the reproduction light source 7 such as the sun as shown in FIG. 9, even if the position of the reproduction light source (sun) is changed, the succeeding vehicle or the like is changed as in the first embodiment. From the observer 8, it was as if the light source was on the surface of the hologram, and it was bright, and the green letters could be visually recognized sharply in the periphery.

Although the preferred embodiments have been described above, the present invention is not limited to these, and various applications are possible. Regarding holograms, the reproduction wavelength can be changed to red, yellow, blue, etc.
It is possible to reproduce various colors such as orange, and to reproduce with more colors by performing multiple exposure, and it is also possible to reproduce by combining a plurality of different colors. The hologram is preferably one that diffusely reflects light, but a hologram that specularly reflects light instead of diffusely reflecting light can also be used. In this case, the reproduction light source itself is an ornament. In addition to the photopolymer, a photosensitive material such as a silver halide photosensitive material, gelatin dichromate, and various photoresists may be appropriately selected and used.

Regarding the substrate, when the substrate is arranged on the light source side as in each embodiment, it is necessary to use a transparent plate glass or a transparent resin such as an acrylic resin or a polycarbonate resin. In the surface of the substrate on the light source side, the substrate may be arranged on the side opposite to the light source and the hologram may be arranged on the light source side like an ornament in which a transparent double-sided adhesive tape, a hologram, a masking member, and a transparent protective tape are laminated in this order. In this case, the substrate can be made of a transparent plate as well as various materials such as opaque metal, cement, wood, cloth, ceramic paper, etc. In addition to windows for vehicles and construction, walls, ceilings, floors, partitions, furniture, etc. It can also be applied to toys, road signs, clothing, etc.

Regarding the diffuser plate used at the time of exposure, in addition to frosted glass, a diffuser plate having a smaller pattern such as a satin pattern, a stitch pattern, etc. to be displayed can be used to display characters in a fine pattern. .

As a light source for reproduction, a white lamp, a fluorescent lamp, a halogen lamp, the sun or the like can be used as a white light source, and various light sources such as a laser light source can be adopted in addition thereto.

[0026]

The holographic ornament of the present invention has a desired character, figure, pattern or the like whose peripheral portion is masked, so that the holographic ornament can be visually recognized in a sharp shape and the reflection hologram can be used for white light or the like. By irradiating various kinds of light sources, it is possible to display brightly and clearly from the light source side as if the light source were on the hologram surface. In particular, if the hologram is diffusely reflected, it is possible to visually recognize characters from a wide area on the light source side as if the entire display area were emitting light, and at the same time, the light from the light source for reproduction provided at a specific position is reflected. On the other hand, in the case of a hologram in which multiple reflective holograms that diffract in different directions are stacked, it is visually recognized in a wide range with respect to the light from the reproduction light source located at a specific position, and can be used, for example, in building window glass, partitions, etc. With a hologram,
When the light from the light source for reproduction provided at a specific position is illuminated, the design such as characters and figures can be visually recognized from a wide range, and in the same specific direction with respect to the light from the light source for reproduction at different positions. When a plurality of diffractive reflection holograms are stacked, they are visually recognized from a specific direction with respect to light from a wide range of reproduction light sources, for example, when a hologram is provided on a rear window glass for an automobile and sunlight is irradiated. Even if the altitude of the sun changes, the design can be seen from the following vehicles.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing a holographic ornament according to a first embodiment of the present invention.

FIG. 2 is a plan view of relevant parts showing a holographic ornament according to the first embodiment.

FIG. 3 is a diagram showing an optical system at the time of master hologram exposure in Example 1.

FIG. 4 is a diagram showing an optical system during a first hologram exposure in Example 1.

FIG. 5 is a diagram showing an optical system during a second hologram exposure according to the first embodiment.

FIG. 6 is a side view of essential parts showing a holographic ornament according to a second embodiment of the present invention.

FIG. 7 is a plan view of relevant parts showing a holographic ornament according to a second embodiment.

FIG. 8 is a diagram showing an optical system during exposure of the first hologram and the second hologram in the second embodiment.

FIG. 9 is a side view of essential parts showing a holographic ornament according to a third embodiment.

[Explanation of symbols]

 1 1st hologram 2 2nd hologram 3 Masking member 4 Transparent double-sided adhesive tape 5, 5'substrate 6 Protective tape 7 Reproducing light source 8 Observer

Claims (3)

[Claims] 1. A part of a hologram formed by laminating a plurality of reflection holograms diffracting in different directions with respect to light from a reproduction light source provided at a specific position is masked or the hologram itself is cut out, A holographic ornament characterized by displaying designs such as characters, figures, and patterns. 2. A character formed by masking a part of a hologram formed by laminating a plurality of reflection holograms diffracting in the same specific direction with respect to light from a reproducing light source at a different position, or by cutting out the hologram itself, , A holographic ornament characterized by displaying designs such as figures and patterns. 3. The holographic ornament according to claim 1, wherein the reflection hologram is diffused and reflected with respect to the light from the reproducing light source.