JP2013061191A - Dial for timepiece, and timepiece - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dial for a timepiece showing an appearance with rich spatial effect and a timepiece provided with the dial for the timepiece.SOLUTION: A dial 1 for a timepiece comprises a microlens layer where a plurality of microlenses 111 are regularly arranged when planarly viewed and a decorative layer provided with a plurality of linear patterns 121. The microlens layer and the decorative layer are overlapped with each other when planarly viewed. The decorative layer includes, as the linear patterns, patterns in which pitches between adjacent linear patterns are changed along a longitudinal direction thereof.

Description

  The present invention relates to a timepiece dial and a timepiece.

Timepieces and timepiece dials are required to have a function as a practical product and a decorative property (aesthetic appearance) as a decorative product.
Conventionally, in order to obtain a high-quality appearance as a timepiece dial, in general, a metal dial made of a metal material has been used. However, a conventional timepiece dial has an appearance that can be expressed. The range was limited and it was not possible to adequately meet the needs of consumers.

For example, there is a great need for a timepiece having a dial having a three-dimensional appearance, and a timepiece dial in which a plurality of patterns such as patterns and transparent coatings are alternately formed and laminated is proposed (patent) Reference 1).
However, such a timepiece dial cannot express a three-dimensional effect that exceeds the thickness of the timepiece dial, and the thickness of the timepiece dial itself is extremely increased due to the limitation of the thickness. It is difficult to meet the above needs. In particular, in a dial plate applied to a portable timepiece such as a wristwatch, there is a great limitation on the thickness of the entire timepiece, and it is extremely difficult to realize an appearance full of three-dimensionality.

JP-A-2-306188

  An object of the present invention is to provide a timepiece dial having a three-dimensional appearance and to provide a timepiece having the timepiece dial.

Such an object is achieved by the present invention described below.
The timepiece dial of the present invention has a microlens layer in which a plurality of microlenses are regularly arranged when viewed in plan,
A decorative layer provided with a plurality of linear patterns,
When viewed in plan, the microlens layer and the decorative layer overlap,
The decoration layer is characterized in that the linear pattern has a pattern whose pitch with other linear patterns changes along the longitudinal direction of the linear pattern.
Thereby, it is possible to provide a timepiece dial exhibiting a three-dimensional appearance.

In the timepiece dial of the present invention, the decorative layer includes a plurality of the first line groups including the plurality of linear patterns that do not intersect / contact each other and the plurality of lines that do not intersect / contact each other. A second line group consisting of a pattern of shapes,
It is preferable that at least one linear pattern constituting the first line group intersects with at least one linear pattern constituting the second line group.
Thereby, the stereoscopic effect of the timepiece dial can be made particularly excellent. In addition, it is possible to suitably express a complex uneven appearance (for example, an appearance like a topographic map) that has been difficult to express by various molding methods or machining.

In the timepiece dial according to the aspect of the invention, it is preferable that the decoration layer includes the linear pattern in which the change rate of the pitch per unit length of the linear pattern is not constant.
Thereby, the stereoscopic effect of the timepiece dial can be made particularly excellent. In addition, it is possible to suitably express a complex uneven appearance (for example, an appearance like a topographic map) that has been difficult to express by various molding methods or machining.

In the timepiece dial of the present invention, when the center of the adjacent microlenses is connected by a straight line when the timepiece dial is viewed in plan, a plurality of triangles are regularly arranged by the straight line. It is preferable to become.
Thereby, the three-dimensional appearance and aesthetic appearance of the timepiece dial can be made particularly excellent.
In the timepiece dial of the present invention, the triangle is preferably a regular triangle.
Thereby, the three-dimensional effect and aesthetic appearance of the timepiece dial can be further improved.

In the timepiece dial according to the present invention, when the centers of the adjacent microlenses are connected by a straight line when the timepiece dial is viewed in plan, a plurality of squares are regularly arranged by the straight line. It is preferable to become.
Thereby, the three-dimensional appearance and aesthetic appearance of the timepiece dial can be made particularly excellent.
In the timepiece dial of the present invention, the quadrangle is preferably a square.
Thereby, the three-dimensional effect and aesthetic appearance of the timepiece dial can be further improved.

The timepiece of the present invention includes the timepiece dial of the present invention.
Thereby, it is possible to provide a timepiece having a timepiece dial that has a three-dimensional appearance.
ADVANTAGE OF THE INVENTION According to this invention, the timepiece dial which exhibits the external appearance full of a three-dimensional effect can be provided, and the timepiece provided with the said timepiece dial can be provided.

It is a top view which shows 1st Embodiment of the dial for timepieces of this invention. It is sectional drawing of the timepiece dial shown in FIG. It is a top view which shows 2nd Embodiment of the timepiece dial of this invention. It is a fragmentary sectional view which shows suitable embodiment of the timepiece (portable timepiece) of this invention.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.
First, a preferred embodiment of the timepiece dial of the present invention will be described.
<Watch dial>
(First embodiment)
FIG. 1 is a plan view showing a first embodiment of the timepiece dial of the present invention, and FIG. 2 is a cross-sectional view of the timepiece dial shown in FIG. Note that the drawings referred to in this specification show part of the configuration in an exaggerated manner, and do not accurately reflect actual dimensions and the like.

  As shown in the figure, the timepiece dial 1 includes a microlens layer 11 and a decoration layer 12. The microlens layer 11 includes a plurality of microlenses 111, and the microlenses 111 are regularly arranged when the timepiece dial 1 (microlens layer 11) is viewed in plan view. . The decoration layer 12 has a plurality of linear patterns (linear patterns) 121. When the timepiece dial 1 is viewed in plan, the microlens layer 11 and the decoration layer 12 overlap each other. Furthermore, the decoration layer 12 is provided with a linear pattern 121 whose pitch with other adjacent linear patterns 121 changes along the longitudinal direction.

  By configuring the timepiece dial as described above, it is possible to provide a timepiece dial that visually uses light interference (moire) and has a three-dimensional appearance, especially for observation. The present inventor has earnestly researched that it is possible to provide a watch dial plate that allows an observer to recognize that the thickness of the watch dial is more than the actual thickness by utilizing the illusion of the viewer. I found the result. In addition, the three-dimensional effect of the uneven pattern itself expressed by the present invention can be recognized by the observer as being more than the thickness of the actual timepiece dial.

  In addition, when manufacturing a timepiece dial having irregularities using a molding method such as compression molding, injection molding, etc., if the timepiece dial to be manufactured has a complicated irregular shape, There was a problem. That is, it becomes difficult to peel the molded timepiece dial from the mold, and the productivity of the timepiece dial is significantly reduced. Further, a defect or the like is likely to occur on the timepiece dial during peeling, and the yield is significantly reduced. Further, when manufacturing a timepiece dial having irregularities by performing machining such as cutting, there is a problem that the productivity of the timepiece dial further decreases. On the other hand, according to the present invention, it is possible to provide a timepiece dial that can be recognized by an observer as having a complicated uneven shape.

In the present invention, the pitch of a linear pattern is the width direction of adjacent linear patterns in the normal direction of a point on the linear pattern (a point passing through the center line in the width direction). The distance from the center line.
The timepiece dial 1 is used such that the microlens layer 11 is arranged closer to the observer side (outer surface side) than the decorative layer.

[Microlens layer]
The microlens layer 11 is formed by regularly arranging a plurality of microlenses 111.
In particular, in the present embodiment, when the centers of the adjacent microlenses 111 are connected by a straight line when the timepiece dial 1 is viewed in plan, a plurality of triangles are regularly arranged by the straight line. As described above, a plurality of microlenses 111 are arranged. Thereby, the stereoscopic effect and the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

In the illustrated configuration, the triangle is a regular triangle. Thereby, the three-dimensional appearance and aesthetic appearance of the timepiece dial 1 can be further improved.
The focal length of the microlens 111 is preferably 100 μm or more and 1000 μm or less, and more preferably 150 μm or more and 500 μm or less. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent. The focal point is indicated by P in the figure.

The pitch PML of the microlenses 111 (pitch when the timepiece dial 1 is viewed in plan) _PML is preferably 50 μm or more and 500 μm or less, and more preferably 60 μm or more and 300 μm or less. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent. In the present invention, the pitch of the microlens refers to a distance connecting the center points of adjacent microlenses when the timepiece dial is viewed in plan.

  The microlens layer 11 is made of a light transmissive material. In the present invention, “having light transmittance” means having a property of transmitting at least part of light in the visible light region (wavelength region of 380 to 780 nm), and preferably transmitting light in the visible light region. The rate is 50% or more, and more preferably the light transmittance in the visible light region is 60% or more. As such light transmittance, for example, a value obtained as described below can be adopted. That is, a white fluorescent lamp (manufactured by Toshiba, fluorescent lamp FL20S-D65) is used as a light source, and a solar cell (solar cell) having the same shape as a member to be measured (or a watch dial) under 1000 lux The current value (X) when power is generated with only the power is obtained. Further, the current value (Y) when power is generated in the same state as described above is obtained except that the member (or timepiece dial) to be measured is placed on the light source side surface of the solar cell. Then, the ratio of Y to X ((Y / X) × 100 [%]) obtained as described above can be adopted as the light transmittance.

Hereinafter, unless otherwise specified, in this specification, “light transmittance” refers to a value obtained under such conditions.
Examples of the material constituting the microlens layer 11 include various plastic materials and various glass materials. The microlens layer 11 is preferably mainly composed of a plastic material. The plastic material is generally excellent in moldability (freedom of molding), and can be suitably applied to manufacture the timepiece dial 1 having various shapes. Further, if the microlens layer 11 is made of a plastic material, it is advantageous for reducing the manufacturing cost of the timepiece dial 1. In addition, since plastic materials are generally excellent in light (visible light) transparency and radio wave transparency, the microlens layer 11 is made of a plastic material. The plate 1 can be suitably applied to a solar timepiece (a timepiece equipped with a solar cell) and a radio timepiece. In the following description, an example in which the microlens layer 11 is mainly composed of a plastic material will be mainly described. In the present invention, “mainly” means a component having the highest content among materials constituting the target portion (member), and the content is not particularly limited, but the target portion (member) It is preferable that it is 60 wt% or more of the material which comprises, More preferably, it is 80 wt% or more, It is further more preferable that it is 90 wt% or more.

  Examples of the plastic material constituting the microlens layer 11 include various thermoplastic resins and various thermosetting resins. Specific examples thereof include polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylic resins such as polymethyl methacrylate (PMMA), polyethylene (PE), polypropylene (PP) and the like. Examples thereof include polyolefin resins, polyester resins such as polyethylene terephthalate (PET), epoxy resins, urethane resins, and copolymers, blends, and polymer alloys mainly composed of these. These materials can be used alone or in combination of two or more (for example, as a blend resin, a polymer alloy, a laminate, etc.). In particular, it is preferable that the microlens layer 11 is mainly composed of polycarbonate. Thereby, the microlens 111 can be made more transparent, and the refractive index of the microlens 111 can be optimized, so that the aesthetic appearance of the timepiece dial 1 as a whole is particularly excellent. Can be. Further, the strength of the timepiece dial 1 as a whole can be made particularly excellent, the dimensional accuracy of the microlens 111 can be made higher, unintentional deformation of the microlens 111, etc. Can be reliably prevented, and the reliability of the timepiece dial 1 can be made particularly excellent. When the microlens layer 11 is made of an acrylic resin, a polyester resin, an epoxy resin, or a urethane resin, the microlens is formed by a printing method (particularly, a droplet discharge method such as an inkjet method). 111 can be formed more suitably.

  The microlens layer 11 may include a component other than the plastic material. Examples of such components include plasticizers, antioxidants, colorants (including various color formers, fluorescent substances, phosphorescent substances, etc.), brighteners, fillers, and the like. For example, when the microlens layer 11 is made of a material containing a colorant, variations in the color of the timepiece dial 1 can be widened.

The microlens layer 11 may have a substantially uniform composition at each site, or may have a different composition depending on the site.
The refractive index (absolute refractive index) of the microlens layer 11 is preferably 1.500 or more and 1.650 or less, and more preferably 1.550 or more and 1.600 or less. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

In the illustrated configuration, the microlens 111 has a substantially hemispherical shape and is a spherical lens having a circular shape when viewed from above, but the shape of the microlens 111 is not particularly limited. For example, the shape when viewed in plan may be a saddle shape (substantially elliptical shape, elliptical shape), a substantially triangular shape, a substantially rectangular shape, a substantially hexagonal shape, or the like.
Further, the shape and size of the microlens substrate (microlens layer) 11 are not particularly limited, and are usually determined based on the shape and size of the timepiece dial 1 to be manufactured. In the illustrated configuration, the microlens substrate 11 has a flat plate shape, but may have, for example, a curved plate shape.

  The microlens substrate 11 may be formed by any method. Examples of the method for manufacturing the microlens substrate 11 include compression molding, extrusion molding, injection molding, stereolithography, and 2P method. Can be mentioned. In addition, the microlens substrate 11 is formed by ejecting a liquid material containing the constituent material of the microlens 111 onto a plate-like member that does not have the microlens 111 by a droplet ejection method such as an inkjet method. It may be obtained by forming the lens 111. The microlens 111 may be formed using various printing methods such as offset printing and gravure printing. When the microlens is formed using the printing method, it is advantageous in that the production cost of the microlens substrate 11 can be suppressed. In the present invention, at least a part of the microlenses included in the microlens substrate may not have a circular shape when viewed in plan, for example, may have an elliptical shape. In addition, the plurality of microlenses may be independent from each other, or may be formed by connecting adjacent ones.

[Decoration layer]
The decoration layer 12 has a plurality of linear patterns 121. And the decoration layer 12 is provided with what changes the pitch with other adjacent linear patterns along the longitudinal direction as the linear pattern 121. FIG. As a result of intensive research, the present inventors have found that a timepiece dial that visually uses light interference (moire) and has a three-dimensional appearance can be provided. In particular, the present inventor can provide a timepiece dial that allows the observer to recognize that the thickness of the timepiece dial is greater than the actual thickness by utilizing the illusion of the observer. Found the result of earnest research.

In particular, in the present embodiment, a plurality of linear patterns 121, in particular, all the linear patterns 121 satisfy the condition. As a result, the three-dimensional effect of the timepiece dial 1 can be made particularly excellent, and a complicated three-dimensional shape having a large number of irregularities such as a ripple shape can also be suitably expressed.
The decorative layer 12 is preferably provided with a linear pattern 121 whose pitch change rate per unit length is not constant. Thereby, the stereoscopic effect of the timepiece dial 1 can be made particularly excellent. In addition, the appearance of complex rugged shapes that were difficult to express by various molding methods, machining, etc. (for example, the appearance of a topographic map that three-dimensionally displays the topography with a difference in elevation) is suitably expressed. can do.

  Further, the amount of change in the pitch per unit length (1 cm) of the linear pattern 121 is preferably 0.4 μm or more and 16 μm or less, and more preferably 0.5 μm or more and 10 μm or less. That is, the change rate of the pitch per unit length (1 cm) of the linear pattern 121 is preferably 0.20% or more and 4.5% or less, and is 0.25% or more and 2.8% or less. More preferably. Thereby, the external appearance of the timepiece dial 1 can be made more three-dimensional, and the aesthetic appearance of the timepiece dial 1 can be further improved.

Pitch _{P R} of the adjacent linear patterns 121 is preferably at 40μm or 550μm or less, more preferably 50μm or more 350μm or less. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.
When the pitch of the microlenses 111 is P _ML [μm] and the pitch of the adjacent linear patterns 121 is P _R [μm], the relationship of 0.5 ≦ P _R / P _ML ≦ 1.5 is satisfied. Is preferable, and it is more preferable that the relationship of 0.7 ≦ P _R / P _ML ≦ 1.3 is satisfied. Thereby, the external appearance of the timepiece dial 1 can be made more three-dimensional, and the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

In addition, when the pitch of the adjacent linear pattern 121 is smaller than the pitch of the micro lens 111, the pattern appears to sink. On the other hand, the pitch of the adjacent linear pattern 121 is the pitch of the micro lens 111. If it is larger than that, the pattern appears to float.
The distance from the lens surface (upper surface in FIG. 2) of the microlens 111 to the surface of the decoration layer 12 (upper surface in FIG. 2) is preferably 100 μm or more and 1000 μm or less, and is 150 μm or more and 500 μm or less. More preferably. Thereby, the external appearance of the timepiece dial 1 can be made more three-dimensional, and the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

  In particular, when the center of the adjacent microlenses 111 is connected by a straight line when the timepiece dial 1 is viewed in plan as in the present embodiment, a plurality of triangles are regularly arranged by the straight line. When a plurality of microlenses 111 are arranged so that the distance from the lens surface of the microlens 111 (upper surface in FIG. 2) to the surface of the decorative layer 12 (upper surface in FIG. 2). The distance is preferably 150 μm or more and 500 μm or less, and more preferably 150 μm or more and 300 μm or less. Thereby, the external appearance of the timepiece dial 1 can be made more three-dimensional, and the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

When the focal length of the microlens 111 is L ₀ [μm] and the distance from the lens surface of the microlens 111 to the surface of the decorative layer 12 is L ₁ [μm], 0.5 ≦ L ₁ / L ₀ ≦ 1. It is preferable that the relationship 5 is satisfied, and it is more preferable that the relationship 0.6 ≦ L ₁ / L ₀ ≦ 1.4 is satisfied. Thereby, the external appearance of the timepiece dial 1 can be made more three-dimensional, and the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.
The shape and size of the decoration layer 12 are not particularly limited, and are usually determined based on the shape and size of the timepiece dial 1 to be manufactured. In the illustrated configuration, the decorative layer 12 has a flat plate shape, but may have a curved plate shape, for example.

  When the timepiece dial 1 is viewed in plan, the timepiece character 1 is provided with a linear pattern 121 and a microlens 111 on at least a part of a portion where the timepiece is not provided. It is preferable that the line pattern 121 and / or the microlens 111 is not provided in the portion where is provided. Thereby, while making the visibility of time particularly excellent, the appearance of the timepiece dial 1 can be made particularly excellent, and the practicality as a practical product and the aesthetic appearance as a decorative product, Can be compatible at a higher level.

In the illustrated configuration, the microlens layer (microlens substrate) 11 and the decorative layer 12 are in close contact. Thereby, the distance between the microlens 111 and the linear pattern 121 can be kept constant, and the appearance of the timepiece dial 1 can be stably improved.
The linear pattern 121 may be made of any material, for example, may be made of a material including a colorant such as various pigments and various dyes, or a metal material. Further, the linear pattern 121 may be made of a material including a resin material. Thereby, the adhesiveness with respect to the microlens board | substrate 11 of the linear pattern 121 can be made especially excellent.

  The linear pattern 121 may be formed by any method, for example, by using various printing methods such as a screen printing method, a gravure printing method, an octopus printing method, and an ink jet method. May be. As a result, the microlens layer (microlens substrate) 11 and the linear pattern 121 can be more reliably adhered, and as a result, the distance between the microlens 111 and the decorative layer 12 (pattern) can be more reliably increased. It can be kept constant, and the appearance of the timepiece dial 1 can be stably improved.

Among various printing methods, the inkjet method is particularly preferable. By applying the ink jet method, the above-described effects can be exhibited more remarkably, and even a fine pattern can be suitably formed.
Further, an etching process may be performed on the film formed on the substrate, and the remaining part may be a pattern.

  Moreover, it is preferable that the timepiece dial 1 is applied to a portable timepiece (for example, a wristwatch). Among various watches, a portable watch is particularly required to be thin. However, according to the present invention, the three-dimensional effect of the watch dial is reduced while making the watch dial sufficiently thin. Can be made sufficiently excellent. That is, when the timepiece dial of the present invention is applied to a portable timepiece, the effects of the present invention are more remarkably exhibited.

(Second Embodiment)
FIG. 3 is a plan view showing a second embodiment of the timepiece dial of the present invention. Hereinafter, the timepiece dial according to the second embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted.
In the timepiece dial 1 of the present embodiment, when the centers of the adjacent microlenses 111 are connected by a straight line when the timepiece dial 1 is viewed in plan, a plurality of squares are regularly arranged by the straight line. It has become. Thus, in the present invention, the arrangement pattern of the microlens is not limited to that described in the first embodiment, and even the arrangement pattern as in this embodiment is the same as described above. An effect is obtained. In addition, when the arrangement pattern is as in the present embodiment, the three-dimensional appearance and aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

In the illustrated configuration, the quadrangle is a square. Thereby, the three-dimensional appearance and aesthetic appearance of the timepiece dial 1 can be further improved.
In particular, when the center of the adjacent microlenses 111 is connected by a straight line when the timepiece dial 1 is viewed in plan, as in the present embodiment, a plurality of squares are regularly arranged by the straight line. When a plurality of microlenses 111 are arranged so that the distance from the lens surface of the microlens 111 (upper surface in FIG. 2) to the surface of the decorative layer 12 (upper surface in FIG. 2). The distance is preferably 100 μm or more and 1000 μm or less, and more preferably 250 μm or more and 600 μm or less. Thereby, the external appearance of the timepiece dial 1 can be made more three-dimensional, and the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

In the embodiment described above, the decoration layer 12 is composed of a plurality of linear patterns 121 that do not intersect or contact each other (see FIG. 1). A first line group 123 composed of a plurality of linear patterns 121 that do not intersect / contact each other, and a second line group 124 composed of a plurality of linear patterns 121 that do not intersect / contact each other The linear pattern which comprises a 1st line group, and the linear pattern which comprises a 2nd line group cross | intersect. Thereby, the stereoscopic effect of the timepiece dial 1 can be made particularly excellent. In addition, the appearance of complex rugged shapes that were difficult to express by various molding methods, machining, etc. (for example, the appearance of a topographic map that three-dimensionally displays the topography with a difference in elevation) is suitably expressed. can do.
When the above conditions are satisfied, one linear pattern constituting the first line group and one linear pattern constituting the second line group may intersect. However, in the illustrated configuration, a plurality of linear patterns constituting the first line group intersect with a plurality of linear patterns constituting the second line group. Thereby, the effects as described above can be more remarkably exhibited.

<Clock>
Next, the timepiece of the present invention provided with the timepiece dial of the present invention as described above will be described.
The timepiece of the present invention has the timepiece dial of the present invention as described above. As described above, the timepiece dial of the present invention has a three-dimensional appearance. In particular, by utilizing the illusion of the observer, the thickness of the timepiece dial is greater than the actual thickness. It can be recognized by an observer and has excellent decorativeness (aesthetic appearance). Further, by selecting the material for the decoration layer 12 or the like, it is possible to improve the light transmittance of the timepiece dial 1 as a whole while ensuring the excellent appearance as described above. For this reason, the timepiece of the present invention provided with such a timepiece dial can sufficiently satisfy the requirements for a solar timepiece. As a part other than the timepiece dial (the timepiece dial of the present invention) that constitutes the timepiece of the present invention, known parts can be used. Hereinafter, an example of the configuration of the timepiece of the present invention will be described. explain.

FIG. 4 is a cross-sectional view showing a preferred embodiment of the timepiece (watch) of the present invention.
As shown in FIG. 4, the wristwatch (portable watch) 100 according to the present embodiment includes a case (case) 82, a back cover 83, a bezel (edge) 84, and a glass plate (cover glass) 85. . Further, in the case 82, the timepiece dial 1 of the present invention as described above, the solar cell 94, and the movement 81 are accommodated, and further, hands (pointers) not shown are accommodated. . The timepiece dial 1 is provided between the solar cell 94 and a glass plate (cover glass) 85, and the microlens layer 11 is disposed so as to face the glass plate (cover glass) 85 side. .
The glass plate 85 is usually made of transparent glass or sapphire having high transparency. Thereby, while being able to fully exhibit the aesthetics of the timepiece dial 1 of the present invention, a sufficient amount of light can be incident on the solar cell 94.
The movement 81 uses the electromotive force of the solar cell 94 to drive the pointer.

Although omitted in FIG. 4, in the movement 81, for example, an electric double layer capacitor for storing the electromotive force of the solar cell 94, a lithium ion secondary battery, a crystal oscillator as a time reference source, a crystal oscillation A semiconductor integrated circuit that generates a driving pulse for driving a clock based on the oscillation frequency of the child, a step motor that drives the pointer every second in response to this driving pulse, and a wheel that transmits the movement of the step motor to the pointer A row mechanism is provided.
The movement 81 includes a radio wave receiving antenna (not shown). And it has the function to perform time adjustment etc. using the received electromagnetic wave.

The solar cell 94 has a function of converting light energy into electric energy. The electric energy converted by the solar cell 94 is used for driving the movement.
In the solar cell 94, for example, a p-type impurity and an n-type impurity are selectively introduced into a non-single-crystal silicon thin film, and a p-type non-single-crystal silicon thin film and an n-type non-single-crystal silicon thin film are used. It has a pin structure provided with an i-type non-single-crystal silicon thin film with a low impurity concentration in between.

A winding stem pipe 86 is fitted into and fixed to the barrel 82, and a shaft 871 of a crown 87 is rotatably inserted into the winding stem pipe 86.
The body 82 and the bezel 84 are fixed by a plastic packing 88, and the bezel 84 and the glass plate 85 are fixed by a plastic packing 89.
Further, a back cover 83 is fitted (or screwed) to the body 82, and a ring-shaped rubber packing (back cover packing) 92 is inserted in a compressed state in these joint portions (seal portions) 93. Has been. With this configuration, the seal portion 93 is sealed in a liquid-tight manner, and a waterproof function is obtained.

  A groove 872 is formed on the outer periphery of the middle portion of the shaft portion 871 of the crown 87, and a ring-shaped rubber packing (crown packing) 91 is fitted in the groove 872. The rubber packing 91 is in close contact with the inner peripheral surface of the winding stem pipe 86 and is compressed between the inner peripheral surface and the inner surface of the groove 872. With this configuration, the space between the crown 87 and the winding stem pipe 86 is liquid-tightly sealed, and a waterproof function is obtained. When the crown 87 is rotated, the rubber packing 91 rotates together with the shaft portion 871 and slides in the circumferential direction while being in close contact with the inner peripheral surface of the winding stem pipe 86.

The portable watch (watch) as described above is particularly required to be thin among various types of watches, so that it is possible to achieve both a thin dial for a watch and an excellent aesthetic appearance. Can be applied more suitably.
In the above description, a wristwatch (portable clock) as a solar radio timepiece has been described as an example of a clock. However, the present invention is applicable to other types of clocks such as a portable clock, a table clock, a wall clock, etc. Can be applied similarly. Further, the present invention can be applied to any timepiece such as a solar timepiece excluding a solar radio timepiece and a radio timepiece excluding a solar radio timepiece.

The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above.
For example, in the timepiece dial and timepiece of the present invention, the configuration of each part can be replaced with any configuration that exhibits the same function, and any configuration can be added. For example, you may have a printing part formed by various printing methods. Further, at least one layer may be provided on the surface of the microlens layer and / or the decorative layer. Such a layer may be removed, for example, when the timepiece dial is used.

In the above-described embodiment, the microlens layer is typically described with respect to the case where the microlenses are provided in the same pattern. However, the microlens layer includes a plurality of regions having different microlens arrangement patterns. You may have. Further, the pitch, arrangement, and the like of adjacent microlenses may change continuously.
Further, in the above-described embodiment, when the timepiece dial is viewed in plan, a case where a linear pattern and / or a microlens is not provided in a portion where a time character is provided is mainly described. However, when the timepiece dial is viewed in plan, a linear pattern and a microlens may be provided in a portion where the time character is provided.

In the above-described embodiment, the case where the microlens layer is provided with a convex lens as a microlens has been described as a representative example. However, the microlens may be focused on the surface side on which the decoration layer is provided. It may be a concave lens.
Further, in the above-described embodiment, the case where the microlens layer including the microlens and the decorative layer including the repeating pattern are in close contact with each other has been representatively described. However, the microlens layer and the decorative layer are in close contact with each other. You don't have to. For example, the timepiece dial may include a microlens substrate and a substrate provided with a decoration layer, which are separated by a predetermined distance.

DESCRIPTION OF SYMBOLS 1 ... Timepiece dial 11 ... Micro lens layer (micro lens board | substrate) 111 ... Micro lens 12 ... Decoration layer 121 ... Linear pattern (linear pattern) 123 ... 1st line group 124 ... 2nd line group 81 ... Movement 82 ... Body (case) 83 ... Back cover 84 ... Bezel (edge) 85 ... Glass plate (cover glass) 86 ... Winding pipe 87 ... Crown 871 ... Shaft part 872 ... Groove 88 ... Plastic packing 89 ... Plastic packing 91 ... rubber gasket (crown gasket) 92 ... rubber gasket (back cover gasket) 93 ... joint (sealing portion) 94 ... solar battery 100 ... watch (portable timepiece) P _{ML ...} pitch P R _... pitch P ... focus

Claims (8)

A microlens layer in which a plurality of microlenses are regularly arranged when seen in a plan view;
A decorative layer provided with a plurality of linear patterns,
When viewed in plan, the microlens layer and the decorative layer overlap,
The decorative layer is provided with a pattern in which the pitch between the linear pattern and another adjacent linear pattern varies along the longitudinal direction of the linear pattern as the linear pattern. Dial. The decorative layer includes a first line group composed of a plurality of linear patterns that do not intersect or contact each other, and a second line composed of a plurality of the linear patterns that do not intersect or contact each other. A group,
2. The timepiece character according to claim 1, wherein at least one linear pattern constituting the first line group intersects with at least one linear pattern constituting the second line group. Board.   3. The timepiece dial according to claim 1, wherein the decorative layer has a pattern in which a rate of change of the pitch per unit length of the linear pattern is not constant as the linear pattern.   4. When the clock dial is viewed in plan, when the centers of the adjacent micro lenses are connected by a straight line, a plurality of triangles are regularly arranged by the straight line. 5. The dial for clocks described in 1.   The timepiece dial according to claim 4, wherein the triangle is a regular triangle.   6. When the timepiece dial is viewed in plan, when the centers of the adjacent microlenses are connected by a straight line, a plurality of squares are regularly arranged by the straight line. The dial for clocks described in 1.   The timepiece dial according to claim 6, wherein the quadrangle is a square.   A timepiece comprising the timepiece dial according to claim 1.

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