Optical pattern display system

Abstract

To provide an optical pattern display system that can display an optical pattern while suppressing impact on design property to a minimum level.SOLUTION: An optical pattern display system includes: an irradiation device 2 for emitting a laser beam; and an article having a colloid structure CS that generates an optical pattern P by being irradiated with light from the irradiation device 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an optical pattern display system. [Background technology]

[0002] Patent Document 1 discloses a portable item that includes at least one transparent or translucent decorative element that is placed and held on a support, the decorative element having the shape and appearance of a jewel, and a luminescent material layer that is placed between the support and the decorative element so as to cause light to be reflected or refracted by the decorative element, thereby creating a visual effect. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2011-527198 Summary of the Invention [Problem to be solved by the invention]

[0004] The portable item disclosed in Patent Document 1 includes a decorative element on the support part, so when the support part is viewed from above the portable item, the decorative element, which is the shape and appearance of the jewel, can be identified. Therefore, the decorative element, which is the shape and appearance of the jewel, has a greater or lesser influence on the design of the portable item.

[0005] The present inventors have focused on this point and conceived and embodied an invention that minimizes the impact of decorative elements on the design of portable items. Therefore, a main object of the present disclosure is to provide an optical pattern display system that can display optical patterns while minimizing the impact on the design. [Means for solving the problem]

[0006] The optical pattern display system of the present disclosure comprises: an irradiation device that irradiates laser light; an article having a colloidal structure that generates an optical pattern when irradiated with light from the irradiation device; It is equipped with: [Effects of the Invention]

[0007] According to the optical pattern display system of the present disclosure, an optical pattern can be displayed by irradiating a colloidal structure with light from a light source. On the other hand, when light from an irradiation device is not irradiated, it is difficult to visually recognize the colloidal structures, which are on the order of several μm, and the impact of the colloidal structures on the design can be minimized. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of an article and an illumination device that constitute the optical pattern display system of the present disclosure. [Figure 2] FIG. 2(a) is a perspective view of an article used in the optical pattern display system of the present disclosure, FIG. 2(b) is an enlarged view of the colloidal structure in the dashed area of ​​FIG. 2(a), and FIG. 2(c) is a schematic diagram illustrating the positional relationship between the dial, hour and minute hands, and case. [Figure 3A] FIG. 3A is a surface view of a colloidal structure. [Figure 3B] FIG. 3B is a surface view of the colloidal structure. [Figure 4] FIG. 4 is a schematic diagram showing a state in which an optical pattern is displayed in the optical pattern display system of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0009] An optical pattern display system according to an embodiment of the present disclosure will be described in more detail below. Although the description will be made with reference to the drawings as needed, various elements in the drawings are merely shown schematically and for illustrative purposes to facilitate understanding of the present disclosure, and the appearances and dimensional ratios may differ from those of the actual objects.

[0010] (Regarding the optical pattern display system of the present disclosure) The optical pattern display system 1 of the present disclosure includes an irradiation device 2 that irradiates laser light, and an article 3 having a colloidal structure CS that generates an optical pattern P when irradiated with light from the irradiation device 2. In addition, as an optional configuration, a screen that displays an optical pattern may be provided on the irradiation device 2 or the article 3. The components (irradiation device 2 and article 3) that make up the optical pattern display system of the present disclosure will be described in detail below.

[0011] -Irradiation device- The illumination device 2 may be provided in a housing BD that houses an item 3. As an example, in the example shown in Fig. 1, the illumination device 2 is intended to be provided in a housing BD (shelf) that houses an item 3 (watch). In other words, the housing BD may be provided with a storage space SP that houses the item 3 at a position where light from the illumination device 2 is irradiated (see Fig. 1).

[0012] The irradiation device 2 may be a device that emits light in a straight line in one direction and emits monochromatic light (i.e., light with a uniform wavelength). Note that a plurality of irradiation devices 2 may be provided, and each irradiation device 2 may output light of a different wavelength (e.g., red light, blue light, green light).

[0013] -Goods- 2(a) to 2(c), the item 3 may be a watch. The item 3 includes a dial 31, an hour hand 32 and a minute hand 33 that rotate on the dial 31, and a case 41 that houses the dial 31, the hour hand 32, and the minute hand 33.

[0014] A colloidal structure CS is provided on the dial 31. As an example, the colloidal structure CS may be provided on the dial 31, or a film-like substrate F on which the colloidal structure CS is provided may be attached to the dial 31. The film-like substrate F may be a transparent member so as not to affect the design of the dial 31. The thickness of the film-like substrate F may be 10 μm or more and 100 μm or less, but is not limited to this size and may be thinner than 10 μm or thicker than 100 μm.

[0015] The colloidal structure CS is intended to be a structure in which colloidal particles CP are regularly arranged. Here, the colloidal particles CP are particles dispersed in a solvent, and the average particle size of the particles is intended to be 1 nm or more and 100 μm or less.

[0016] The colloidal structure CS is prepared by the following method. A colloidal dispersion is prepared by mixing colloidal particles and polymers constituting the resin in a beaker. Specifically, polyacrylic acid, sodium hydroxide solution, and ultrapure water are mixed to prepare a sodium polyacrylate aqueous solution. When the prepared colloidal dispersion is placed on the surface of a substrate F, the colloidal particles attract each other, and six colloidal particles CP are arranged around one colloidal particle CP, forming a hexagonal shape in plan view, as shown in Figure 3A. Note that the arrangement of colloidal particles CP is not limited to a hexagonal shape in plan view; as shown in Figure 3B, they can also be arranged regularly above, below, left, and right around one colloidal particle CP, forming a square shape in plan view.

[0017] Here, the reason for using the colloidal structure CS in the optical pattern display system 1 of the present disclosure is that the colloidal structure CS offers a high degree of freedom in processing. A previously known technique is photolithography or the like, which allows for the formation of regularly arranged structures. However, the fabrication of structures using photolithography or the like requires that the film-like substrate F be large enough to be introduced into a photolithography apparatus, which places limitations on the size of the film-like substrate F. On the other hand, the colloidal structure CS of the present disclosure can be fabricated by placing a colloidal dispersion on the surface of the film-like substrate F, and therefore there is no theoretical limit to the size of the structure.

[0018] Another advantage of using the colloidal structure CS is that it allows for the formation of minute structures on transparent materials (e.g., film materials). In other words, the colloidal structure CS is a structure that is difficult to see with the naked eye. Therefore, an optical pattern display system 1 equipped with the colloidal structure CS is less likely to have its design properties impaired by the colloidal structure CS. Furthermore, because the colloidal structure CS is difficult to see with the naked eye, it can also be used for security purposes.

[0019] -Optical pattern display method- A method for displaying the optical pattern P using the above-mentioned "illumination device 2" and "article 3" will be described with reference to FIG.

[0020] First, the object 3 is placed in the storage space SP of the housing BD in which the irradiation device 2 is installed. The object 3 is positioned in advance so that when the object 3 is placed in the storage space SP, the laser light from the irradiation device 2 is irradiated onto the colloidal structure CS.

[0021] Next, laser light is irradiated from the irradiation device 2 toward the substrate F on which the colloidal structure CS is provided. This irradiation causes repeated random reflections due to the minute irregularities of the colloidal structure CS, generating, for example, an optical pattern P on the case 41 of the article 3. More specifically, the light incident on the colloidal structure CS is reflected by the colloidal structure CS, and the reflected light is scattered (for example, the light is scattered so as to correspond to the hexagonal vertices of the colloidal particles CP arranged in a hexagonal shape as described above), and the optical pattern P is projected onto the case 41.

[0022] Here, when forming optical pattern P on case 41, care may be taken to ensure that short needle 32 and long needle 33 do not obstruct the projection of optical pattern P. For example, it may be necessary to irradiate light from irradiation device 2 at an angle, or to adjust the positions of short needle 32 and long needle 33 so that light is scattered at the vertices of the hexagons of the colloidal particles.

[0023] The optical pattern P projected onto the case 41 may be a design. The optical pattern P may also be an identification pattern or a determination pattern for identifying an individual item 3 or determining its authenticity.

[0024] As described above, in the optical pattern display system 1 of the present disclosure, the colloidal structure CS can minimize the impact on the design of the dial 31. Furthermore, without using decorative elements in the form and appearance of jewels as in conventional technology, a complex optical pattern P can be generated on the dial 31 by random reflection caused by the minute irregularities of the colloidal structure CS.

[0025] In the embodiment shown in FIG. 4, a laser beam from the irradiation device 2 is irradiated onto the substrate F on which the colloidal structure CS is provided, and the optical pattern P is projected onto the case 41 by the reflected light. However, the present invention is not limited to this example. For example, the laser beam from the irradiation device 2 may be irradiated onto the substrate F on which the colloidal structure CS is provided, and the optical pattern P may be projected by the transmitted light.

[0026] 4, the irradiation device 2 is provided in the housing BD, the colloidal structure CS is provided in the article 3, and the optical pattern P is projected onto the housing BD. However, the present invention is not limited to this. In other words, the irradiation device 2 and the article on which the colloidal structure CS is provided may be separate components. For example, the irradiation device may be provided on the article 3, and the colloidal structure CS may be provided on the housing BD. Furthermore, the position where the optical pattern P is projected may be either the housing BD or the article 3.

[0027] It should be noted that the embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. Therefore, the technical scope of the present disclosure should not be interpreted solely by the above-described embodiments, but should be defined based on the claims. The technical scope of the present disclosure also includes all modifications within the scope and meaning equivalent to the claims.

[0028] For example, in the optical pattern display system of the present disclosure, the article 3 has been described as an embodiment of a watch, but is not limited to the embodiment of a watch and may be, for example, a three-dimensional object (figure), a mobile terminal, an electronic device, etc. Furthermore, the irradiation device 2 may be provided on a display stand for displaying a three-dimensional object, a mobile terminal, an electronic device, etc.

[0029] The optical pattern display system of the present disclosure has the following aspects. <1> an irradiation device that irradiates laser light; an article having a colloidal structure that generates an optical pattern when irradiated with light from the irradiation device; An optical pattern display system comprising: <2> The article further comprises a screen that displays an optical pattern. <1> 10. An optical pattern display system according to claim 19. <3> The colloidal structure is provided on a film-like substrate. <1> or <2> The optical pattern display article according to claim 1. <4> The irradiation device is provided in a housing, The housing has a storage space for storing the item at a position where the light from the irradiation device is irradiated. <1> ~ <3> 10. An optical pattern display system according to any one of the above. <5> The colloidal structure has six colloidal particles arranged around one colloidal particle, and is arranged in a hexagonal shape in a planar view, or has four colloidal particles arranged around one colloidal particle, and is arranged in a quadrangular shape in a planar view. <1> ~ <4> 10. An optical pattern display system according to any one of the above. [Industrial Applicability]

[0030] The optical pattern display system of the present disclosure can be suitably used as an article that can display an optical pattern while minimizing the impact on design. [Explanation of symbols]

[0031] 1. Optical pattern display system 2 Irradiation device BD case 3 Goods CS colloidal structure CP colloidal particles F Base material 31 Dial 32 hour hand 33 Long Hand 41 cases P Optical Pattern

Claims

1. an irradiation device that irradiates laser light; an article having a colloidal structure that generates an optical pattern when irradiated with light from the irradiation device; An optical pattern display system comprising:

2. The optical pattern display system according to claim 1 , further comprising a screen on the article for displaying the optical pattern.

3. 2. The optical pattern display system according to claim 1, wherein the colloidal structure is provided on a film-like substrate.

4. The irradiation device is provided in a housing, The optical pattern display system according to claim 1 , wherein the housing has a storage space for storing the object at a position where the light from the irradiation device is irradiated.

5. 2. The optical pattern display system according to claim 1, wherein the colloidal structure is arranged in a hexagonal shape in a planar view, with six colloidal particles arranged around one colloidal particle, or in a square shape in a planar view, with four colloidal particles arranged around one colloidal particle.

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