JP2001062853A - Manufacture of part with irregular surface - Google Patents
Manufacture of part with irregular surfaceInfo
- Publication number
- JP2001062853A JP2001062853A JP24106799A JP24106799A JP2001062853A JP 2001062853 A JP2001062853 A JP 2001062853A JP 24106799 A JP24106799 A JP 24106799A JP 24106799 A JP24106799 A JP 24106799A JP 2001062853 A JP2001062853 A JP 2001062853A
- Authority
- JP
- Japan
- Prior art keywords
- ionizing radiation
- curable resin
- cured resin
- mold
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、透過型スクリーン
に使用されるフレネルレンズシート、プリズムレンズシ
ート、レンチキュラレンズシート等のレンズシート、各
種光学フィルムなどの、主に光学用途に利用される表面
に微細な凹凸パターンを備えた部品の製造方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface used mainly for optical applications such as a lens sheet such as a Fresnel lens sheet, a prism lens sheet, a lenticular lens sheet, etc., and various optical films used for a transmission screen. The present invention relates to a method for manufacturing a component having a fine concavo-convex pattern.
【０００２】[0002]
【従来の技術】透過型スクリーン用のフレネルレンズ、
プリズムレンズ、レンチキュラレンズ、各種光学フィル
ムなどに、表面に微細な凹凸パターンを有する光学用途
向けのシートあるいはフィルム（以下、これらを「シー
ト」と総称する。）が用いられている。このようなシー
トは、通常、プレス法、キャスト法等の方法により成形
されている。しかし、プレス法によりシートを作製する
ためには、加熱、加圧、冷却という３つのサイクルを要
し、成形に比較的長い時間が必要であり、生産性が低い
という課題が存在する。キャスト法によりシートを作製
する際にも、金型にモノマーを流し込んで重合するため
の時間がかかり生産性が低いという課題が存在し、また
多数の金型が必要になるという課題も存在する。2. Description of the Related Art Fresnel lenses for transmission screens,
2. Description of the Related Art Sheets or films for optical applications having a fine concavo-convex pattern on the surface (hereinafter, these are collectively referred to as "sheets") are used for prism lenses, lenticular lenses, various optical films, and the like. Such a sheet is usually formed by a method such as a press method or a cast method. However, in order to produce a sheet by a pressing method, three cycles of heating, pressing, and cooling are required, a relatively long time is required for molding, and there is a problem that productivity is low. Also when producing a sheet by a casting method, there is a problem that it takes a long time for pouring a monomer into a mold and polymerizing it, resulting in low productivity and a problem that a large number of molds are required.
【０００３】[0003]
【発明が解決しようとする課題】プレス法およびキャス
ト法に存在する上記の課題は、成形型と基材シートとの
間に電離放射線硬化樹脂（２Ｐ樹脂）を流し込み、電離
放射線を照射することによって電離放射線硬化樹脂を硬
化重合する２Ｐ成形法により解決が可能である。しか
し、２Ｐ成形法には、凹凸部分の表面または内部に気泡
が混入してしまい、成形された製品の品質が低下するこ
とを回避するために、真空雰囲気下で製造しなければな
らないという問題がある。気泡の混入を防ぐためには、
３０〜２００ｃｐｓ程度の比較的低粘度の電離放射線硬
化樹脂を用いることが有効であるが、多量の電離放射線
硬化樹脂を成形型と基材シートとの間に流し込むと、表
面凹凸部品の形状によっては、凹凸部分の表面または内
部に気泡が混入してしまい、必ずしも十分な対策とはな
らない。The above-mentioned problems which exist in the pressing method and the casting method are as follows. An ionizing radiation-curable resin (2P resin) is poured between a mold and a base sheet, and is irradiated with ionizing radiation. The problem can be solved by a 2P molding method in which an ionizing radiation-curable resin is cured and polymerized. However, the 2P molding method has a problem in that it must be manufactured in a vacuum atmosphere in order to avoid that air bubbles are mixed into the surface or inside of the uneven portion and the quality of the molded product is reduced. is there. To prevent air bubbles from entering,
It is effective to use a relatively low-viscosity ionizing radiation-curable resin of about 30 to 200 cps. However, when a large amount of ionizing radiation-curable resin is poured between the mold and the base sheet, depending on the shape of the surface uneven parts, Air bubbles are mixed into the surface or inside of the uneven portion, which is not always a sufficient countermeasure.
【０００４】本発明は上記の課題に鑑みてなされたもの
で、凹凸パターンを有する成形型に電離放射線硬化樹脂
を塗布したときに気泡を巻き込ませず、生産効率を低下
させることの少ない表面凹凸部品の製造方法を提供する
ことを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a surface uneven part which does not involve air bubbles when an ionizing radiation-curable resin is applied to a mold having an uneven pattern and which does not lower production efficiency. It is an object of the present invention to provide a method for producing the same.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決する本
発明の表面凹凸部品の製造方法は、凹凸パターンを有す
る成形型面に、平均粒子径が１０〜５０μｍの微霧状に
された第１の電離放射線硬化樹脂を塗布する工程と、あ
らかじめ第２の電離放射線硬化樹脂が塗布された基材シ
ートの該第２の電離放射線硬化樹脂面を、該成形型上の
第１の電離放射線硬化樹脂面に重ね合わせ、基材シート
を介して加圧ロールで押さえつけて、該第１の電離放射
線硬化樹脂と該第２の電離放射線硬化樹脂とを積層する
工程と、電離放射線を照射して、上記第１の電離放射線
硬化樹脂および第２の電離放射線硬化樹脂を硬化させる
工程と、該成形型から、該第１の電離放射線硬化樹脂お
よび第２の電離放射線硬化樹脂の層を基材シートととも
に離型する工程とからなる。According to the method of the present invention for solving the above-mentioned problems, the present invention provides a method for manufacturing a surface uneven part, which comprises forming a fine mist having an average particle diameter of 10 to 50 μm on a mold surface having an uneven pattern. Applying the first ionizing radiation-curable resin to the base sheet to which the second ionizing radiation-curable resin has previously been applied, Superimposing on the resin surface, pressing with a pressure roll via a base sheet, a step of laminating the first ionizing radiation curable resin and the second ionizing radiation curable resin, and irradiating with ionizing radiation, Curing the first ionizing radiation-curable resin and the second ionizing radiation-curable resin, and forming a layer of the first ionizing radiation-curable resin and the second ionizing radiation-curable resin together with a base sheet from the mold. Release process Ranaru.
【０００６】[0006]
【発明の実施の形態】以下、本発明を図面に従って説明
する。本発明による製造工程の一例の概略図を図１に示
す。図１において、ロール状成形型（６）には、フレネ
ルレンズ、プリズムレンズ、レンチキュラレンズ等のレ
ンズの微細パターンや、回折格子等の光学部品の微細パ
ターンが反転された凹凸パターンが形成されている。こ
のロール状成形型（６）としては、アルミニウム、黄
銅、銅等の金属や、シリコン樹脂、ウレタン樹脂、エポ
キシ樹脂、フッ素樹脂、ポリメチルペンタン樹脂等の合
成樹脂から作製したものを用いることができる。電離放
射線硬化樹脂層が形成されて上記ロール状成形型（６）
に押圧される基材シート（７）としては、アクリル樹
脂、ポリカーボネート樹脂、塩化ビニル樹脂、トリ酢酸
セルロース樹脂、ポリエステル樹脂からなるフィルムあ
るいはシートを用いることができる。基材シート（７）
はシート送り装置（図示しない）により一定速度で送り
出される。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a schematic view of an example of the manufacturing process according to the present invention. In FIG. 1, a roll-shaped mold (6) is formed with a fine pattern of a lens such as a Fresnel lens, a prism lens and a lenticular lens, and a concavo-convex pattern obtained by inverting a fine pattern of an optical component such as a diffraction grating. . As the roll-shaped mold (6), a mold made of a metal such as aluminum, brass, or copper, or a synthetic resin such as a silicone resin, a urethane resin, an epoxy resin, a fluororesin, or a polymethylpentane resin can be used. . The above-mentioned roll-shaped mold (6) having an ionizing radiation-curable resin layer formed thereon
As the base sheet (7) to be pressed, a film or sheet made of an acrylic resin, a polycarbonate resin, a vinyl chloride resin, a cellulose triacetate resin, or a polyester resin can be used. Base sheet (7)
Is fed at a constant speed by a sheet feeder (not shown).
【０００７】本発明においては、図１に示すように、塗
布装置（１）からロール状成形型の凹部に、平均粒子径
が１０〜５０μｍの微霧状にされた第１の電離放射線硬
化樹脂が塗布される。この第１の電離放射線硬化樹脂と
しては、塗布時の粘度が３０〜２００ｃｐｓの範囲にあ
るものが、微霧化させやすいために好ましく、粘度が３
０〜８０ｃｐｓの範囲にあるものがさらに好ましい。こ
こで、電離放射線硬化樹脂の温度を上昇させることによ
って、低粘度化することも可能である。上記のように微
霧化して成形型に電離放射線硬化樹脂を塗布すること
で、気泡の巻き込みを防止することができる。さらに、
ロール状成形型の凹部全体に電離放射線硬化樹脂を注入
する方法に比べて、塗布量を約１／２０以下に減らすこ
とができ、電離放射線硬化樹脂の材料コストの低減も可
能である。In the present invention, as shown in FIG. 1, a first ionizing radiation-curable resin having an average particle diameter of 10 to 50 μm in the form of fine mist is applied from a coating apparatus (1) to a concave portion of a roll-shaped mold. Is applied. As the first ionizing radiation-curable resin, a resin having a viscosity at the time of application in the range of 30 to 200 cps is preferable because it is easy to atomize, and has a viscosity of 3 cps.
Those in the range of 0 to 80 cps are more preferred. Here, the viscosity can be reduced by increasing the temperature of the ionizing radiation-curable resin. By applying the ionizing radiation curable resin to the mold after atomization as described above, entrapment of air bubbles can be prevented. further,
Compared with the method of injecting the ionizing radiation curable resin into the entire concave portion of the roll-shaped mold, the application amount can be reduced to about 1/20 or less, and the material cost of the ionizing radiation curable resin can be reduced.
【０００８】第２の電離放射線硬化樹脂（２）は、塗布
装置により基材シート（７）上に所定の膜厚になるよう
に塗布される。この第２の電離放射線硬化樹脂は塗布時
の粘度が第１の電離放射線硬化樹脂の粘度よりも高いも
のである。上記第２の電離放射線硬化樹脂の粘度として
は、加圧ロール（３）による膜厚の制御が可能な２００
〜５，０００ｃｐｓの範囲が好ましい。加圧ロール
（３）は基材シート（７）側に設置され、成形型ロール
（６）と同一速度で回転する。[0008] The second ionizing radiation-curable resin (2) is applied on the base sheet (7) by a coating device so as to have a predetermined thickness. The second ionizing radiation curable resin has a higher viscosity at the time of application than the first ionizing radiation curable resin. The viscosity of the second ionizing radiation-curable resin can be controlled by a pressure roll (3).
A range of -5,000 cps is preferred. The pressure roll (3) is installed on the base sheet (7) side, and rotates at the same speed as the forming die roll (6).
【０００９】第１の電離放射線硬化樹脂が塗布されたロ
ール状成形型（６）には、第２の電離放射線硬化樹脂が
塗布された基材シート（７）が加圧ロール（３）によっ
て押圧され、第１の電離放射線硬化樹脂層と第２の電離
放射線硬化樹脂層とが積層される。そして、基材シート
（７）が透明である場合には、上記ロール状成形型
（６）の下方に配置された電離放射線照射装置（５）に
よって基材シート(７)の下側から電離放射線が照射され
る。該基材シート（７）側から２つの電離放射線硬化樹
脂層に電離放射線が照射されることによって、２つの電
離放射線硬化樹脂層が硬化される。積層された２つの電
離放射線硬化樹脂はロール状成形型（６）に圧接した状
態で硬化されるので、ロール成形型の凹凸パターンが高
い精度に電離放射線硬化樹脂に転写される。基材シート
（７）は、上記ロール状成形型（６）から上記２つの電
離放射線硬化樹脂層とともに離型される。A base sheet (7) coated with a second ionizing radiation-curable resin is pressed against a roll-shaped mold (6) coated with a first ionizing radiation-curable resin by a pressure roll (3). Then, the first ionizing radiation curable resin layer and the second ionizing radiation curable resin layer are laminated. When the base sheet (7) is transparent, the ionizing radiation is applied from below the base sheet (7) by the ionizing radiation irradiating device (5) arranged below the roll-shaped forming die (6). Is irradiated. By irradiating the two ionizing radiation-curable resin layers with ionizing radiation from the base sheet (7) side, the two ionizing radiation-curable resin layers are cured. Since the two ionized radiation-curable resins laminated are cured while being pressed against the roll-shaped mold (6), the concavo-convex pattern of the roll-shaped mold is transferred to the ionized radiation-curable resin with high accuracy. The substrate sheet (7) is released from the roll-shaped mold (6) together with the two ionizing radiation-curable resin layers.
【００１０】また、図２に示すように、該基材シート
（７）が電離放射線に対して透明でない場合や基材シー
ト（７）に電離放射線吸収剤が含有されている場合に
は、電離放射線に対して透明なロール状成形型（６）を
使用し、ロール状成形型（６）内部から電離放射線を照
射すれば良い。なお、図２において、その他の構成は図
１のものと同様であり、その説明を省略する。As shown in FIG. 2, when the base sheet (7) is not transparent to ionizing radiation or when the base sheet (7) contains an ionizing radiation absorber, It is sufficient to use a roll-shaped mold (6) transparent to radiation and irradiate ionizing radiation from inside the roll-shaped mold (6). In FIG. 2, other configurations are the same as those in FIG. 1, and the description thereof is omitted.
【００１１】[0011]
【実施例】以下、実施例により本発明をより具体的に説
明する。The present invention will be described more specifically with reference to the following examples.
【００１２】（実施例１）図２に示す装置を持い、基材
シート（７）として、易接着処理がされた厚さが７５μ
ｍのポリエチレンテレフタレートフィルム（ダイヤホイ
ルヘキスト製、商標ダイヤホイル）を使用した。第１の
電離放射線硬化樹脂には、東亞合成製アロニックスＵＶ
Ｘ−１４１８（粘度２５℃、１１０ｃｐｓ）、第２の電
離放射性硬化樹脂には、日本化薬製カヤトロンＫＮＲ−
９０２（粘度２５℃、２７００ｃｐｓ）を使用した。ス
ロットダイ法により、第２の電離放射線硬化樹脂を基材
シート上に厚さが１５０μｍになるようにコーティング
した。また、加圧スプレーノズルを用いて、平均粒子径
が１０〜５０μｍの微霧状にした第１の電離放射線硬化
樹脂を、ロール状成形型（６）の凹部に塗布した。その
後、紫外硬化用マルチメタルランプ（電離放射線照射装
置（５））により紫外線を照射し、２つの電離放射線硬
化樹脂を硬化させた。これによって、ロール成形型の凹
凸パターンを転写し、全体の厚さが１００μｍで、ピッ
チが５０μｍ、溝高さが２０μｍである、気泡の噛み込
みのないマルチレンズシートを得た。(Example 1) The apparatus shown in FIG. 2 was used, and a base sheet (7) having a thickness of 75 .mu.
m of polyethylene terephthalate film (trade name: Diafoil, manufactured by Diafoil Hoechst). The first ionizing radiation curable resin is Alonix UV manufactured by Toagosei
X-1418 (viscosity 25 ° C., 110 cps), and the second ionizing radiation curable resin is Kayatron KNR- manufactured by Nippon Kayaku.
902 (viscosity 25 ° C., 2700 cps) was used. A second ionizing radiation-curable resin was coated on the base sheet to a thickness of 150 μm by a slot die method. Further, the first ionizing radiation-curable resin in the form of fine mist having an average particle diameter of 10 to 50 μm was applied to the concave portion of the roll-shaped mold (6) using a pressurized spray nozzle. Thereafter, ultraviolet rays were irradiated by a multimetal lamp for ultraviolet curing (ionizing radiation irradiation device (5)) to cure the two ionizing radiation curing resins. As a result, the concavo-convex pattern of the roll forming die was transferred, and a multi-lens sheet having a total thickness of 100 μm, a pitch of 50 μm, and a groove height of 20 μm without air bubbles was obtained.
【００１３】（実施例２）図２に示す装置を持い、基材
シート（７）として、厚さが８０μｍのトリ酢酸セルロ
ースフィルム（富士写真フィルム製、商標ＴＡＣフィル
ム、ＵＶ吸収剤添加）を使用した。第１の電離放射線硬
化樹脂には、東亞合成製アロニックスＵＶＸ−１４１８
（粘度２５℃、１１０ｃｐｓ）、第２の電離放射性硬化
樹脂には、東亞合成製アロニックスＵＶＸ−８４０（粘
度２５℃、５６０ｃｐｓ）を使用した。スロットダイ法
により、第２の電離放射線硬化樹脂を基材シート上に厚
さが５０μｍになるようにコーティングした。また、加
圧スプレーノズルを用いて、平均粒子径が１０〜５０μ
ｍの微霧状にした第１の電離放射線硬化樹脂を、ロール
状成形型（６）の凹部に塗布した。その後、紫外硬化用
マルチメタルランプ（電離放射線照射装置（５））によ
り紫外線を照射し、２つの電離放射線硬化樹脂を硬化さ
せた。これによって、ロール成形型の凹凸パターンを転
写し、全体の厚さが１００μｍで、ピッチが２０μｍ、
溝高さが１０μｍである、気泡の噛み込みのない光学シ
ートを得た。(Example 2) A cellulose triacetate film (manufactured by Fuji Photo Film Co., Ltd., trade name: TAC film, with UV absorber) having a thickness of 80 μm was provided as a base sheet (7) having the apparatus shown in FIG. used. The first ionizing radiation curable resin includes Aronix UVX-1418 manufactured by Toagosei Co., Ltd.
(Viscosity 25 ° C., 110 cps), Alonix UVX-840 (viscosity 25 ° C., 560 cps) manufactured by Toagosei Co., Ltd. was used as the second ionizing radiation curable resin. A second ionizing radiation curable resin was coated on the base sheet so as to have a thickness of 50 μm by a slot die method. Further, using a pressurized spray nozzle, the average particle diameter is 10 to 50 μm.
m of the first ionizing radiation-curable resin in the form of a fine mist was applied to the concave portion of the roll-shaped mold (6). Thereafter, ultraviolet rays were irradiated by a multimetal lamp for ultraviolet curing (ionizing radiation irradiation device (5)) to cure the two ionizing radiation curing resins. Thereby, the concavo-convex pattern of the roll mold is transferred, and the total thickness is 100 μm, the pitch is 20 μm,
An optical sheet having a groove height of 10 μm and free of air bubbles was obtained.
【００１４】[0014]
【発明の効果】本発明の表面凹凸部品の製造方法によれ
ば、凹凸パターンを有する成形型に電離放射線硬化樹脂
を塗布したときに、気泡を巻き込ませず、生産効率を低
下させることが少ない。According to the method for manufacturing a surface unevenness component of the present invention, when an ionizing radiation curable resin is applied to a mold having an unevenness pattern, air bubbles are not involved and the production efficiency is rarely reduced.
【図１】本発明で使用される連続ロール成形装置の一例
の概略図である。FIG. 1 is a schematic view of an example of a continuous roll forming apparatus used in the present invention.
【図２】本発明で使用される連続ロール成形装置の他の
一例の概略図である。FIG. 2 is a schematic view of another example of the continuous roll forming apparatus used in the present invention.
１…第１の電離放射線硬化樹脂層 ２…第２の電離放射線硬化樹脂層 ３…加圧ロール ４…成形型の凹部 ５…電離放射線照射装置 ６…ロール状成形型 ７…基材シート DESCRIPTION OF SYMBOLS 1 ... 1st ionizing radiation curing resin layer 2 ... 2nd ionizing radiation curing resin layer 3 ... Pressure roll 4 ... Concavity of a forming die 5 ... Ionizing radiation irradiation device 6 ... Roll-shaped forming die 7 ... Base sheet
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F204 AA44 AD05 AD08 AF01 AG05 AH75 AH76 AM32 EA03 EB02 EB11 EB22 EB29 EF01 EF05 EF25 EK18 4F213 AA44 AD05 AD08 AF01 AG05 AH75 AH76 AM32 WA02 WA32 WA86 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F204 AA44 AD05 AD08 AF01 AG05 AH75 AH76 AM32 EA03 EB02 EB11 EB22 EB29 EF01 EF05 EF25 EK18 4F213 AA44 AD05 AD08 AF01 AG05 AH75 AH76 AM32 WA02 WA32 WA86
Claims (1)
粒子径が１０〜５０μｍの微霧状にされた第１の電離放
射線硬化樹脂を塗布する工程と、あらかじめ第２の電離
放射線硬化樹脂が塗布された基材シートの該第２の電離
放射線硬化樹脂面を、該成形型上の第１の電離放射線硬
化樹脂面に重ね合わせ、基材シートを介して加圧ロール
で押さえつけて、該第１の電離放射線硬化樹脂と該第２
の電離放射線硬化樹脂とを積層する工程と、電離放射線
を照射して、上記第１の電離放射線硬化樹脂および第２
の電離放射線硬化樹脂を硬化させる工程と、該成形型か
ら、該第１の電離放射線硬化樹脂および第２の電離放射
線硬化樹脂の層を基材シートとともに離型する工程とか
らなる表面凹凸部品の製造方法。1. A step of applying a first ionizing radiation-curable resin in the form of fine mist having an average particle diameter of 10 to 50 μm on a mold surface having a concavo-convex pattern; The second ionizing radiation-curable resin surface of the applied base sheet is overlapped with the first ionizing radiation-curable resin surface on the mold, and pressed with a pressure roll via the base sheet to form the second ionizing radiation-curable resin. The first ionizing radiation-curable resin and the second
Laminating the first ionizing radiation-curable resin and the second ionizing radiation-curable resin.
Curing the ionizing radiation-curable resin, and releasing the first ionizing radiation-curable resin and the second ionizing radiation-curable resin together with the base sheet from the molding die. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24106799A JP2001062853A (en) | 1999-08-27 | 1999-08-27 | Manufacture of part with irregular surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24106799A JP2001062853A (en) | 1999-08-27 | 1999-08-27 | Manufacture of part with irregular surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001062853A true JP2001062853A (en) | 2001-03-13 |
Family
ID=17068817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24106799A Pending JP2001062853A (en) | 1999-08-27 | 1999-08-27 | Manufacture of part with irregular surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001062853A (en) |
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| JP2014178553A (en) * | 2013-03-15 | 2014-09-25 | Dainippon Printing Co Ltd | Manufacturing method for concavo-convex structural body, and concavo-convex structural body |
| WO2014156452A1 (en) * | 2013-03-28 | 2014-10-02 | 三菱レイヨン株式会社 | Optical film production method, optical film, surface light-emitting body and optical film production device |
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- 1999-08-27 JP JP24106799A patent/JP2001062853A/en active Pending
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| JP2007001214A (en) * | 2005-06-24 | 2007-01-11 | Seiko Epson Corp | Manufacturing method of lens substrate, lens substrate, transmission type screen, and rear type projector |
| JP2007230166A (en) * | 2006-03-03 | 2007-09-13 | Konica Minolta Holdings Inc | Manufacturing method of resin sheet |
| JP2014178553A (en) * | 2013-03-15 | 2014-09-25 | Dainippon Printing Co Ltd | Manufacturing method for concavo-convex structural body, and concavo-convex structural body |
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| WO2014156452A1 (en) * | 2013-03-28 | 2014-10-02 | 三菱レイヨン株式会社 | Optical film production method, optical film, surface light-emitting body and optical film production device |
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| JPWO2014156452A1 (en) * | 2013-03-28 | 2017-02-16 | 三菱レイヨン株式会社 | Optical film manufacturing method, optical film, surface light emitter, and optical film manufacturing apparatus |
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| KR20180005187A (en) | 2015-05-13 | 2018-01-15 | 도판 인사츠 가부시키가이샤 | Method for producing relief patterned body, device for producing same, and sticker |
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| WO2020009222A1 (en) | 2018-07-05 | 2020-01-09 | 凸版印刷株式会社 | Optical structure |
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