Optical pattern display article

Abstract

To provide an optical pattern display article which can display an optical pattern while minimizing the impact on design.SOLUTION: Optical pattern display articles 1A to 1H disclosed herein comprises a laser light source 2, and a substrate 3 provided with a colloidal structure CS configured to generate an optical pattern when irradiated with light from the laser light source 2.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to optical pattern display articles. [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 primary object of the present disclosure is to provide an optical pattern display article that can display an optical pattern while minimizing the impact on the design. [Means for solving the problem]

[0006] The optical pattern display article of the present disclosure comprises: A laser light source; a substrate provided with a colloidal structure that generates an optical pattern when irradiated with light from the laser light source; It is equipped with: [Effects of the Invention]

[0007] According to the optical pattern display article of the present disclosure, an optical pattern can be displayed by irradiating the colloidal structure with light from a light source. On the other hand, when light from a laser light source is not irradiated, the colloidal structure, which is on the order of several μm in size, is difficult to see, and the impact of the colloidal structure on the design can be minimized. [Brief explanation of the drawings]

[0008] [Figure 1A] FIG. 1A is a plan view of a colloidal structure in an optical pattern display article of the present disclosure. [Figure 1B] FIG. 1B is a plan view of a colloidal structure in an optical pattern display article of the present disclosure. [Figure 2] FIG. 2 is a schematic diagram of a first embodiment of an optical pattern display article of the present disclosure. [Figure 3A] FIG. 3A is a schematic diagram of a second embodiment of an optical pattern display article of the present disclosure. [Figure 3B] FIG. 3B is a schematic diagram of a second embodiment of the optical pattern display article of the present disclosure. [Figure 4] Figure 4(a) is a perspective view of a third embodiment of the optical pattern display article of the present disclosure, Figure 4(b) is an enlarged view of the colloidal structure in the dashed area of ​​Figure 4(a), and Figure 4(c) is a schematic diagram explaining the positional relationship between the dial, hour and minute hands, and case. [Figure 5] Figure 5(a) is a perspective view of a fourth embodiment of the optical pattern display article of the present disclosure, Figure 5(b) is an enlarged view of the colloidal structure in the dashed area of ​​Figure 5(a), and Figure 5(c) is a schematic diagram explaining the positional relationship between the dial, hour and minute hands, and case. [Figure 6]Figure 6(a) is a perspective view of a fifth embodiment of the optical pattern display article of the present disclosure, Figure 6(b) is an enlarged view of the colloidal structure in the dashed area of ​​Figure 6(a), and Figure 6(c) is a schematic diagram explaining the positional relationship between the rotation mechanism, dial, hour hand, minute hand, and case. [Figure 7] Figure 7(a) is a perspective view of a sixth embodiment of the optical pattern display article of the present disclosure, Figure 7(b) is an enlarged view of the colloidal structure in the dashed area of ​​Figure 7(a), and Figure 7(c) is a schematic diagram explaining the positional relationship between the rotation mechanism, dial, hour hand, minute hand, and case. [Figure 8] Figure 8(a) is a perspective view of a seventh embodiment of the optical pattern display article of the present disclosure, Figure 8(b) is an enlarged view of the colloidal structure in the dashed area of ​​Figure 8(a), and Figure 8(c) is a schematic diagram explaining the positional relationship between the dial, hour and minute hands, and case. [Figure 9] Figure 9(a) is a perspective view of an eighth embodiment of the optical pattern display article of the present disclosure, Figure 9(b) is an enlarged view of the colloidal structure in the dashed area of ​​Figure 9(a), and Figure 9(c) is a schematic diagram explaining the positional relationship between the dial, hour and minute hands, and case. DETAILED DESCRIPTION OF THE INVENTION

[0009] An optical pattern displaying article according to an embodiment of the present disclosure will be described in more detail below. Although the description will be made with reference to drawings as necessary, various elements in the drawings are merely shown schematically and exemplarily 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 article of the first embodiment) The optical pattern display article 1A of the first embodiment includes a laser light source 2, a substrate 3, and a screen 4 of any configuration (see FIG. 2).

[0011] The laser light source 2 emits light straight in one direction and emits monochromatic light (i.e., light with a uniform wavelength). Note that, as shown in Fig. 2, a plurality of laser light sources 2 may be provided, each outputting light of a different wavelength (e.g., red light, green light, and blue light). In other words, a red laser light source 2R, a green laser light source 2G, and a blue laser light source 2B may be provided.

[0012] The substrate 3 is provided with colloidal structures CS that generate an optical pattern when irradiated with light from the laser light source 2. The substrate 3 may be a transparent member so as not to affect the design of the optical pattern display article 1A. For example, the substrate 3 may be in the form of a film. More preferably, the substrate 3 may be a transparent film. The thickness of the substrate 3 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.

[0013] 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.

[0014] 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 3, 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 1A. Note that the arrangement of colloidal particles CP is not limited to a hexagonal shape in plan view; as shown in Figure 1B, they can also be arranged regularly above, below, left, and right around one colloidal particle CP, forming a square shape in plan view.

[0015] Here, the reason for using the colloidal structure CS in the optical pattern display article 1A of the present disclosure is that the colloidal structure CS has a high degree of freedom in processing. Conventionally known techniques, such as photolithography, allow for the formation of regularly arranged structures. However, the fabrication of structures using photolithography requires that the size of the substrate 3 be large enough to be introduced into a photolithography apparatus, which places limitations on the size of the substrate 3. In contrast, the colloidal structure CS of the present disclosure can be fabricated by placing a colloidal dispersion on the surface of the substrate 3, and therefore there is no theoretical limit to the size of the structure.

[0016] 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, the optical pattern display article 1A equipped with the colloidal structure CS is less likely to have its design 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.

[0017] (Operation of the optical pattern display article of the first embodiment) In the optical pattern display article shown in Fig. 2, when a laser light source 2 irradiates a substrate 3 with laser light, the laser light irradiates a colloidal structure CS. Then, the light irradiated onto the colloidal structure CS is projected onto a screen 4 disposed at a position distant from the substrate 3.

[0018] Here, when the colloid particles CP are arranged in a hexagonal shape in plan view on the substrate 3 as shown in FIG. 1A, light is output on the screen 4 so as to correspond to the vertices of the hexagon. Therefore, by simply irradiating the colloidal structure CS with light, a relatively complex hexagonal pattern can be projected onto the screen 4. Furthermore, as shown in FIG. 2, by using a red laser light source 2R, a green laser light source 2G, and a blue laser light source 2B, a multicolored pattern can be projected onto the screen 4. Also, by switching between the output of the red laser light source 2R, the blue laser light source 2B, and the green laser light source 2G, it is possible to create a fireworks-like effect on the screen 4.

[0019] (Regarding the optical pattern display article of the second embodiment) Next, an optical pattern display article 1B of a second embodiment will be described with reference to Figures 3A and 3B. In describing the optical pattern display article of the second embodiment, explanations of points common to the description of the optical pattern of the first embodiment will be omitted as appropriate. In other words, the following description will focus on points different from the optical pattern of the first embodiment described above.

[0020] The optical pattern display article 1B of the second embodiment may be provided with an angle adjustment mechanism (not shown) that adjusts the angle between the laser light source 2 and the substrate 3. With such an angle adjustment mechanism, when the laser light source 2 and the substrate 3 are arranged parallel to the screen 4 as shown in FIG. 3A, an optical pattern P (e.g., a hexagonal pattern) having a distance between opposite sides of L1 is projected onto the screen 4. Furthermore, when the laser light source 2 and the substrate 3 are arranged at an angle with respect to the screen 4 as shown in FIG. 3B, an optical pattern P (e.g., a hexagonal pattern) having a distance between opposite sides of L2 is projected onto the screen 4. In other words, the size of the pattern on the screen 4 can be expanded and / or reduced.

[0021] The technical idea of ​​the optical pattern display article 1B of the second embodiment is that, for example, by changing the angle adjustment mechanism between morning, noon, and night, it is possible to change the size of the pattern projected onto the screen 4 in the morning, the pattern projected onto the screen 4 in the daytime, and the pattern projected onto the screen 4 at night.

[0022] (Regarding the optical pattern display article of the third embodiment) Next, an optical pattern display article 1C of a third embodiment will be described with reference to Fig. 4. In describing the optical pattern display article of the third embodiment, explanations of points common to the explanations of the optical patterns of the first and second embodiments will be omitted as appropriate. In other words, the following description will focus on points that differ from the optical patterns of the first and second embodiments.

[0023] The optical pattern display article 1C of the third embodiment is an embodiment assuming a timepiece. The optical pattern display article 1C 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.

[0024] The dial 31 uses a substrate 3 provided with colloidal structures CS. As described above, the colloidal structures CS are minute structures formed on a transparent member (for example, a film member), and are therefore difficult to see with the naked eye. Therefore, the design of the dial 31 is unlikely to be impaired.

[0025] The short hand 32 and / or the long hand 33 are provided with a laser light source 2. The laser light source 2 may be a red laser light source 2R, a blue laser light source 2B, or a green laser light source 2G shown in FIG. 2, or any one of these light sources may be used.

[0026] In the optical pattern display article 1C of the third embodiment described above, when laser light is irradiated from the laser light source 2 provided on the hour hand 32 and / or minute hand 33 toward the colloidal structure CS on the dial 31, the laser light is randomly reflected by the minute irregularities of the colloidal structure CS, generating an optical pattern P on the case 41. 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.

[0027] Here, when forming the optical pattern P on the case 41, care may be taken to ensure that the short needle 32 and the long needle 33 do not obstruct the projection of the optical pattern P. For example, it may be necessary to irradiate the laser light source 2 at an angle, and to adjust the positions of the short needle 32 and the long needle 33 so that the light is scattered at the vertices of the hexagon of the colloidal particles CP.

[0028] As described above, in the optical pattern display article 1C of this embodiment, the colloidal structures 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 the prior art, a complex optical pattern P can be generated on the case 41 by random reflection caused by the minute irregularities of the colloidal structures CS. Furthermore, if the optical pattern display article 1C of the third embodiment is in the form of a watch, the optical pattern P can be projected onto the case 41 when the hour hand 32 and / or minute hand 33 rotates to indicate a certain time.

[0029] Furthermore, as a preferred embodiment of the optical pattern display product 1C of the third embodiment, it may further include a colloidal structure ECS for external light (see Figure 4) that generates a further optical pattern P2 by external laser light.

[0030] The colloidal structure ECS for external light may be used, for example, as an individual identification tag or an authenticity tag for identifying the optical pattern display article 1C. The colloidal structure ECS for external light may be provided at a position on the dial 31 where it is not irradiated with light from the laser light source 2 provided on the hour hand 32 and / or minute hand 33.

[0031] The optical pattern displaying article 1C provided with such a colloidal structure for external light ECS may project an additional optical pattern onto the case 41 using external laser light (i.e., light with good directionality and uniform wavelength). An example of the additional optical pattern may be a pattern for identifying the individual optical pattern displaying article 1C or a pattern used for authenticity determination. Note that the projection position of the additional optical pattern P is not limited to the case 41.

[0032] As described above, the colloidal structure for external light ECS of this embodiment can be used to identify the individual product or determine the authenticity of the optical pattern display article 1C.

[0033] (Regarding the optical pattern display article of the fourth embodiment) Next, an optical pattern display article 1D of a fourth embodiment will be described with reference to Fig. 5. In describing the optical pattern display article of the fourth embodiment, explanations of points common to the explanations of the optical patterns of the first to third embodiments will be omitted as appropriate. In other words, the following description will focus on points that differ from the optical patterns of the first to third embodiments.

[0034] In the optical pattern display article 1D of the fourth embodiment, a laser light source 2 is provided on a dial 31. A substrate 3 having a colloidal structure CS provided on an hour hand 32 and / or a minute hand 33 is used.

[0035] In the optical pattern display article 1D of the fourth embodiment described above, when laser light is irradiated from the laser light source 2 provided on the dial 31 toward the colloidal structure CS of the hour hand 32 and / or minute hand 33, the light is randomly reflected repeatedly by the minute irregularities of the colloidal structure CS, generating an optical pattern P on the dial 31. More specifically, the light incident on the colloidal structure CS is reflected by the colloidal structure CS, and the reflected light is scattered, projecting the optical pattern P onto the dial 31.

[0036] As described above, in the optical pattern display article 1D of this embodiment, the colloidal structure CS can minimize the effect on the design of the dial 31. Furthermore, without using decorative elements in the form and appearance of jewels as in the prior art, 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.

[0037] (Regarding the optical pattern display article of the fifth embodiment) Next, an optical pattern display article 1E of a fifth embodiment will be described with reference to Fig. 6. In describing the optical pattern display article of the fifth embodiment, explanations of points common to the optical patterns of the first to fourth embodiments will be omitted as appropriate. In other words, the following description will focus on points that differ from the optical patterns of the first to fourth embodiments.

[0038] In the optical pattern display article 1E of the fifth embodiment, a transparent portion 31T is provided on the dial 31, and a rotation mechanism 34 for rotating the hour hand 32 and / or minute hand 33 is disposed below the transparent portion 31T. In other words, the rotation mechanism 34 is visible from the dial 31.

[0039] Furthermore, in the optical pattern display article 1E of the fifth embodiment, a laser light source 2 is provided on the hour hand 32 and / or minute hand 33. A substrate 3 having a colloidal structure CS provided on a transparent portion 31T of a dial 31 that allows the rotation mechanism 34 to be viewed is used.

[0040] In the optical pattern display article 1E of the fifth embodiment described above, when laser light is irradiated from the laser light source 2 provided on the hour hand 32 and / or minute hand 33 toward the colloidal structure CS in the transparent portion 31T of the dial 31, the laser light is randomly reflected repeatedly by the minute irregularities of the colloidal structure CS, generating an optical pattern P on the rotation mechanism 34. More specifically, with respect to the light incident on the colloidal structure CS, the transmitted light transmitted by the colloidal structure CS is scattered, and the optical pattern P is projected onto the rotation mechanism 34.

[0041] As described above, the optical pattern display article 1E of this embodiment can minimize the impact of the colloidal structures CS on the design. Furthermore, without using decorative elements with a jewel shape or appearance as in the prior art, a complex optical pattern P can be generated on the rotating mechanism 34 by random reflection caused by the minute irregularities of the colloidal structures CS.

[0042] (Regarding the optical pattern display article of the sixth embodiment) Next, an optical pattern display article 1F of a sixth embodiment will be described with reference to Fig. 7. In describing the optical pattern display article of the sixth embodiment, explanations of points common to the optical patterns of the first to fifth embodiments will be omitted as appropriate. In other words, the following description will focus on points that differ from the optical patterns of the first to fifth embodiments.

[0043] In the optical pattern display article 1F of the sixth embodiment, a laser light source 2 is provided on the minute hand 32 and / or the minute hand 33. A substrate 3 on which a colloidal structure CS is provided is used for the rotation mechanism .

[0044] In the optical pattern display article 1F of the sixth embodiment described above, when laser light is irradiated from the laser light source 2 provided on the short hand 32 and / or the long hand 33 through the transparent portion 31T toward the colloidal structure CS of the rotation mechanism 34, the laser light is randomly reflected by the minute irregularities of the colloidal structure CS, generating an optical pattern P on the case 41. More specifically, the light incident on the colloidal structure CS is reflected by the colloidal structure CS, and the reflected light is scattered, projecting the optical pattern P onto the case 41.

[0045] As described above, in the optical pattern display article 1F of this embodiment, 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 the prior art, a complex optical pattern P can be generated on the case 41 by random reflection caused by the minute irregularities of the colloidal structure CS. Furthermore, in this embodiment, the colloidal structure CS is provided on a rotation mechanism 34, and the colloidal structure CS is rotated by the rotation mechanism 34, so that the optical pattern P projected onto the case 41 can be moved on the screen 41.

[0046] (Regarding the optical pattern display article of the seventh embodiment) Next, an optical pattern display article 1G of a seventh embodiment will be described with reference to Fig. 8. In describing the optical pattern display article of the seventh embodiment, explanations of points common to the explanations of the optical patterns of the first to sixth embodiments will be omitted as appropriate. In other words, the following description will focus on points that differ from the optical patterns of the first to sixth embodiments.

[0047] In the optical pattern display article 1G of the seventh embodiment, a laser light source 2 is provided on the rotation axis AX of the minute hand 32 and / or the minute hand 33. A substrate 3 on which a colloidal structure CS is provided in a case 41 is used.

[0048] In the optical pattern display article 1G of the seventh embodiment described above, when laser light is irradiated from the laser light source 2 provided on the rotation axis AX toward the colloidal structure CS in the case 41, the laser light is randomly reflected by the minute irregularities of the colloidal structure CS, generating an optical pattern P on the dial 31. More specifically, the light incident on the colloidal structure CS is reflected by the colloidal structure CS, and the reflected light is scattered, projecting the optical pattern P onto the dial 31.

[0049] As described above, in the optical pattern display article 1G of this embodiment, 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 the prior art, 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.

[0050] (Regarding the optical pattern display article of the eighth embodiment) Next, an optical pattern display article 1H of an eighth embodiment will be described with reference to Fig. 9. In describing the optical pattern display article of the eighth embodiment, explanations of points common to the optical patterns of the first to seventh embodiments will be omitted as appropriate. In other words, the following description will focus on points that differ from the optical patterns of the first to seventh embodiments.

[0051] The optical pattern display article 1H of the eighth embodiment uses a base material 3 on which a colloidal structure CS is provided below a dial 31 (for example, on a rotation mechanism 34 for rotating an hour hand 32 and / or a minute hand 33). A laser light source 2 is provided further below the base material 3 on which the colloidal structure CS is provided (for example, on a support substrate supporting the rotation mechanism 34).

[0052] In the optical pattern display article 1H of the above-described eighth embodiment, when laser light is irradiated from the laser light source 2 arranged below the substrate 3 toward the colloidal structure CS on the substrate 3, the laser light is randomly reflected repeatedly by the minute irregularities of the colloidal structure CS, generating an optical pattern P on the dial 31. More specifically, with respect to the light incident on the colloidal structure CS, the transmitted light that passes through the colloidal structure CS is scattered, and the optical pattern P is projected onto the dial 31.

[0053] As described above, in the optical pattern display article 1H of this embodiment, the colloidal structure CS can minimize the effect on the design of the dial 31. Furthermore, without using decorative elements in the form and appearance of jewels as in the prior art, a complex optical pattern P can be generated on the dial 31 by random reflection caused by the minute concaves and convexes of the colloidal structure CS.

[0054] 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.

[0055] For example, in the optical pattern display articles of the present disclosure, the third to eighth embodiments have been described as embodiments of a watch, but the articles are not limited to the embodiment of a watch and may also be, for example, three-dimensional objects (figures), mobile terminals, electronic devices, etc.

[0056] The optical pattern display article of the present disclosure has the following aspects. <1> A laser light source; a substrate provided with a colloidal structure that generates an optical pattern when irradiated with light from the laser light source; An optical pattern display article comprising: <2> further comprising a screen for displaying the optical pattern; <1> The optical pattern display article according to claim 1. <3> The substrate is in the form of a film. <1> or <2> The optical pattern display article according to claim 1. <4> A dial and an hour hand and a minute hand that rotate on the dial, The base material is used for the dial. <1> ~ <3> 10. An optical pattern display article according to any one of the above. <5> The laser light source is provided on the short hand and / or the long hand. <4> The optical pattern display article according to claim 1. <6> The substrate further comprises a colloidal structure for external light that generates an additional optical pattern by external laser light. <1> ~ <5> 10. An optical pattern display article according to any one of the above. <7> 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> ~ <6> 10. An optical pattern display article according to any one of the above. [Industrial Applicability]

[0057] The optical pattern display article 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]

[0058] 1A~1H Optical pattern display items 2 Laser light source 2R red laser light source 2G green laser light source 2B Blue laser light source 3 Base material CS colloidal structure CP colloidal particles 4 screens 31 Dial 31T transparent part 32 hour hand 33 Long Hand 34 Rotating mechanism 41 cases ECS Colloidal Structure for External Light AX Rotating axis P Optical Pattern

Claims

1. A laser light source; a substrate provided with a colloidal structure that generates an optical pattern when irradiated with light from the laser light source; An optical pattern display article comprising:

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

3. The optical pattern display article according to claim 1 , wherein the substrate is in the form of a film.

4. A dial and an hour hand and a minute hand that rotate on the dial, The optical pattern display article according to claim 1 , wherein the substrate is used for the dial.

5. The optical pattern display article according to claim 4 , wherein the laser light source is provided on the short hand and / or the long hand.

6. The optical pattern display article according to claim 1 , wherein the substrate further comprises a colloidal structure for external light that generates an additional optical pattern in response to external light.

7. 2. The optical pattern display article according to claim 1, wherein the colloidal structure is formed by six colloidal particles arranged around one colloidal particle, and arranged in a hexagonal shape in a planar view, or by four colloidal particles arranged around one colloidal particle, and arranged in a quadrangular shape in a planar view.

Images