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JP2838151B2 - Manufacturing method of lens sheet - Google Patents
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JP2838151B2 - Manufacturing method of lens sheet - Google Patents

Manufacturing method of lens sheet

Info

Publication number
JP2838151B2
JP2838151B2 JP1212489A JP21248989A JP2838151B2 JP 2838151 B2 JP2838151 B2 JP 2838151B2 JP 1212489 A JP1212489 A JP 1212489A JP 21248989 A JP21248989 A JP 21248989A JP 2838151 B2 JP2838151 B2 JP 2838151B2
Authority
JP
Japan
Prior art keywords
lens
ultraviolet
transparent resin
manufacturing
lens sheet
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.)
Expired - Fee Related
Application number
JP1212489A
Other languages
Japanese (ja)
Other versions
JPH0375703A (en
Inventor
雅勇 井上
泰章 中西
義明 村山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP1212489A priority Critical patent/JP2838151B2/en
Publication of JPH0375703A publication Critical patent/JPH0375703A/en
Application granted granted Critical
Publication of JP2838151B2 publication Critical patent/JP2838151B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、ビデオプロジエクシヨンテレビのスクリー
ンに用いられるフレネルレンズやレンチキユラーレン
ズ、あるいは集光用のフレネルレンズ等のレンズシート
の製造方法に関するものである。
The present invention relates to a method for manufacturing a lens sheet such as a Fresnel lens or a lenticular lens used for a screen of a video projection television, or a Fresnel lens for focusing. It is about.

(従来の技術) フレネルレンズやレンチキユラーレンズ等のレンズシ
ートを製造する場合、そのサイズが比較的小さく大量生
産するときは合成樹脂の射出成形の方法が行われている
が、上述したスクリーン用や集光用で比較的大きなサイ
ズのレンズシートを製作する場合は、平板状のレンズ型
に樹脂板を当接し、これを加熱加圧してレンズ面を転写
して製造するのが一般的である。
(Prior Art) In the case of manufacturing lens sheets such as Fresnel lenses and lenticular lenses, the injection molding method of synthetic resin is performed when the size is relatively small and mass production is performed. When manufacturing a relatively large size lens sheet for light collection or light collection, it is common to make a resin plate abut on a flat lens mold, and heat and press this to transfer the lens surface. .

ところがこの方法によるときは、加熱−冷却に要する
時間が長くかゝり、生産性を上げられないという難点が
あつた。
However, this method has a drawback that the time required for heating and cooling is long, and the productivity cannot be increased.

このため最近では、レンズ型と透明樹脂基板との間に
紫外線硬化型樹脂液を介在させ、紫外線を照射して硬化
させる方法が提案されている(特開昭61−177215号公報
参照)。
For this reason, recently, a method has been proposed in which an ultraviolet-curable resin liquid is interposed between a lens mold and a transparent resin substrate, and cured by irradiating ultraviolet rays (see Japanese Patent Application Laid-Open No. 61-177215).

(発明が解決しようとする課題) しかしながら、上記の紫外線硬化型樹脂によつてレン
ズ部を形成する場合、透明樹脂基材に対し設定通りの正
確なレンズ部を形成することは困難を伴うことがある。
その一つとして、本来的にあるいは紫外線の照射による
変形によつて、透明樹脂基材が反ることであり、透明樹
脂基材が浮き上つて気泡が入つたり、紫外線硬化型樹脂
が透明樹脂基材側に正確に転写されないことが起るから
である。
(Problems to be Solved by the Invention) However, when the lens portion is formed of the above-mentioned ultraviolet curable resin, it may be difficult to form an accurate lens portion on a transparent resin base material as set. is there.
One of the reasons is that the transparent resin substrate warps, either originally or by deformation due to the irradiation of ultraviolet rays. This is because the transfer is not accurately performed on the base material side.

本発明はこのような状況に鑑み、紫外線硬化型樹脂に
よるレンズ部が正確に形成されるように、しかも紫外線
照射に対する影響がないように検討し、本発明を完成す
るに至つたものである。
In view of such circumstances, the present invention has been studied so as to accurately form a lens portion made of an ultraviolet-curable resin and to have no influence on ultraviolet irradiation, and has completed the present invention.

(課題を解決するための手段) すなわち本発明は、上記の課題を達成しようとするも
ので、その要旨とするところは、透明樹脂基材とレンズ
型との間に紫外線硬化型樹脂液を介在させたのち紫外線
を照射して透明樹脂基材の少なくとも一面にレンズ部を
形成するレンズシートの製造方法において、透明樹脂基
材とレンズ型との間に紫外線硬化型樹脂液を介在させた
状態で、紫外線を透過する材料からなる止め部材を用い
て周辺より固定して紫外線を照射することを特徴とする
レンズシートの製造方法にある。
(Means for Solving the Problems) That is, the present invention is intended to achieve the above-mentioned problems, and the gist of the present invention is to interpose an ultraviolet-curable resin liquid between a transparent resin substrate and a lens mold. In the method for producing a lens sheet in which a lens portion is formed on at least one surface of the transparent resin substrate by irradiating ultraviolet rays after being made, in a state where an ultraviolet curable resin liquid is interposed between the transparent resin substrate and the lens mold And a method of manufacturing a lens sheet, characterized in that ultraviolet rays are radiated while being fixed from the periphery using a stopper member made of a material that transmits ultraviolet rays.

以下、本発明をさらに詳細に説明する。 Hereinafter, the present invention will be described in more detail.

本発明に使用する透明樹脂基材としては、メタクリル
樹脂板が適しているが、これ以外にもポリカーボネート
樹脂板、塩化ビニル樹脂板やポリスチレン樹脂板等が使
用でき、また樹脂フイルムも使用しうる。
As the transparent resin substrate used in the present invention, a methacrylic resin plate is suitable. However, a polycarbonate resin plate, a vinyl chloride resin plate, a polystyrene resin plate, or the like can be used, and a resin film can also be used.

またレンズ型としてはフレネルレンズ、レンチキユラ
ーレンズあるいはフライアイを与える面をもつた金属や
合成樹脂製の型を用いることができる。
As the lens mold, a Fresnel lens, a lenticular lens, or a mold made of metal or synthetic resin having a surface providing a fly's eye can be used.

さらに紫外線硬化型樹脂としては、特に限定されない
が、一般に用いられているエポキシアクリレート系、ウ
レタンアクリレート系、ポリエステルアクリレート系、
ポリオールアクリレート系等が使用しうる。そして同時
に使用される反応性稀釈モノマーは、1つあるいはそれ
以上の反応性モノ、ジあるいは多官能アクリル系モノマ
ー、例えばペンタエリスリトールトリアクリレート、ト
リメチロールプロパントリアクリレート、ヘキサンジオ
ールジアクリレート、テトラエチレングリコールジアク
リレート、イソホルニルアクリレート等が使用しうる。
Further, the UV-curable resin is not particularly limited, but generally used epoxy acrylate, urethane acrylate, polyester acrylate,
Polyol acrylates and the like can be used. The reactive diluent monomers used simultaneously include one or more reactive mono-, di- or polyfunctional acrylic monomers such as pentaerythritol triacrylate, trimethylolpropane triacrylate, hexanediol diacrylate, tetraethylene glycol diacrylate. Acrylate, isoformyl acrylate and the like can be used.

本発明は上記の如き透明樹脂基材を用い、レンズ型と
の間に紫外線硬化型樹脂液を介在させた状態で、紫外線
を透過する材料からなる止め部材により周辺を固定する
ことを特徴とするものであるが、この材料としては無機
ガラス、ポリエステル、ポリメチルペンテン樹脂、メタ
クリル樹脂あるいはシリコーン樹脂等が用いられる。そ
してこの材料の単独または複合して、断面字状等に成
形して止め部材とする。
The present invention is characterized in that the periphery is fixed by a stop member made of a material that transmits ultraviolet light, with the use of the transparent resin base material as described above and an ultraviolet curable resin liquid interposed between the lens mold and the lens mold. As this material, inorganic glass, polyester, polymethylpentene resin, methacrylic resin, silicone resin or the like is used. This material is used alone or in combination to form a cross-sectional shape or the like to form a stopper.

このような止め部材を用いることにより、透明樹脂基
材に対し紫外線硬化型樹脂液を密接させることができ、
この結果紫外線を照射して硬化させレンズ型の面を正確
に転写させることができる。なお、紫外線硬化型樹脂液
の硬化は一般に行われている方法で行うことができる。
By using such a stop member, it is possible to bring the ultraviolet curable resin liquid into close contact with the transparent resin base material,
As a result, the surface of the lens mold can be accurately transferred by being cured by irradiation with ultraviolet rays. The UV-curable resin liquid can be cured by a generally used method.

(実施例) 以下、具体的実施例について図面に従つて説明する。(Example) Hereinafter, a specific example will be described with reference to the drawings.

透明樹脂基材(3)として、厚さ3mmのメタクリル樹
脂板「アクリライト000」(三菱レイヨン社製、紫外
線吸収剤を含まないもの)を用い、紫外線硬化型樹脂液
(2)として下記の組成のものを用いた。
As a transparent resin substrate (3), a 3 mm thick methacrylic resin plate “Acrylite # 000” (manufactured by Mitsubishi Rayon Co., Ltd., containing no ultraviolet absorber) was used. The one having the composition was used.

・三菱レイヨン社製ウレタンアクリレート「UK−6036」
60重量% ・三菱レイヨン社製ヒドロキシエチルアクリレート「ア
クリエステルHO」 40重量% ・ベンゾフエノン3重量%(上記の2つの和に対して) まずフレネルレンズ面を有するレンズ型(1)上に紫
外線硬化型樹脂液(2)を展延させ、この上に透明樹脂
基材(3)を重ねて第1図のように組んだ。そして次に
予め第3図のように成形した止め部材(4)を周辺より
嵌合し第2図のように固定した。なおこのときの止め部
材(4)は、厚さ5mmの「アクリライト000」を芯材
(4A)とし、この周囲に紫外線透過性シリコーンゴム
東芝シリコーン社製「TSE3032」を被覆(4B)して製作
した。
・ Mitsubishi Rayon's urethane acrylate "UK-6036"
60% by weight ・ Hydroxyethyl acrylate “Acryester HO” manufactured by Mitsubishi Rayon Co., Ltd. 40% by weight ・ Benzophenone 3% by weight (based on the sum of the above two) First, an ultraviolet-curing type is set on a lens type (1) having a Fresnel lens surface. The resin liquid (2) was spread, and a transparent resin base material (3) was overlaid thereon to form an assembly as shown in FIG. Then, a stopper member (4) previously formed as shown in FIG. 3 was fitted from the periphery and fixed as shown in FIG. In this case, the stopper member (4) is made of “Acrylite # 000” having a thickness of 5 mm as a core material (4A), and an ultraviolet transparent silicone rubber is provided around the core material (4A).
It was manufactured by coating (4B) with "TSE3032" manufactured by Toshiba Silicone Co., Ltd.

次にこの透明樹脂基材側から、80Wの高圧水銀灯3灯
で照射距離20cm、移動速度5m/分の条件で紫外線を照射
し、硬化させてレンズ部を一体的に形成した。
Next, ultraviolet rays were irradiated from the transparent resin substrate side with three 80 W high-pressure mercury lamps under the conditions of an irradiation distance of 20 cm and a moving speed of 5 m / min, followed by curing to form a lens unit integrally.

得られたフレネルレンズシートは、第4図の如きもの
であり、透明樹脂基材(3)の浮き上りもなく、レンズ
面を正確に転写したものであり、止め部材(4)の部分
の硬化も十分に行われた優れたものであつた。
The resulting Fresnel lens sheet is as shown in FIG. 4 and has no transparent resin substrate (3) lifted up, accurately transfers the lens surface, and cures the stopper member (4). It was an excellent one that was well done.

(発明の効果) 本発明は以上詳述した如き構成からなるものであり、
紫外線を透過する部材からなる止め部材を用いてレンズ
型と透明樹脂基板とを確実に固定した上で紫外線を照射
するものであるから、透明樹脂基材が浮き上つたり、気
泡が入つたりすることがなく、レンズ面を正確に転写す
ることができ、しかも紫外線照射に影響を及ぼすことが
ない利点がある。
(Effect of the Invention) The present invention has a configuration as described in detail above,
Since the lens mold and the transparent resin substrate are securely fixed to each other using a stop member made of a member that transmits ultraviolet light, the ultraviolet light is irradiated, so that the transparent resin base material floats up or bubbles enter. Therefore, there is an advantage that the lens surface can be accurately transferred without affecting the ultraviolet irradiation.

【図面の簡単な説明】[Brief description of the drawings]

図面は本発明の実施例の方法を示すもので、第1図は透
明樹脂基材とレンズ型との間に紫外線硬化型樹脂液を介
在させた状態の断面図、第2図は止め部材によつて固定
した状態の斜視図、第3図は止め部材の斜視図、第4図
は得られたレンズシートの断面図である。 (1)……レンズ型 (2)……紫外線硬化型樹脂液 (3)……透明樹脂基材 (4)……止め部材
The drawings show a method according to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing a state in which an ultraviolet curable resin liquid is interposed between a transparent resin base and a lens mold. FIG. FIG. 3 is a perspective view of a fixing member, and FIG. 4 is a sectional view of the obtained lens sheet. (1) Lens type (2) UV curable resin liquid (3) Transparent resin substrate (4) Stop member

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) G02B 3/00 G02B 3/08 B29C 39/02 B29C 39/10──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) G02B 3/00 G02B 3/08 B29C 39/02 B29C 39/10

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】透明樹脂基材とレンズ型との間に紫外線硬
化型樹脂液を介在させたのち紫外線を照射して透明樹脂
基材の少なくとも一面にレンズ部を形成するレンズシー
トの製造方法において、透明樹脂基材とレンズ型との間
に紫外線硬化型樹脂液を介在させた状態で、紫外線を透
過する材料からなる止め部材を用いて周辺より固定して
紫外線を照射することを特徴とするレンズシートの製造
方法。
1. A method for manufacturing a lens sheet, comprising forming a lens portion on at least one surface of a transparent resin substrate by irradiating ultraviolet rays after interposing an ultraviolet curing resin liquid between the transparent resin substrate and the lens mold. In a state in which an ultraviolet-curable resin liquid is interposed between the transparent resin base material and the lens mold, the ultraviolet light is radiated while being fixed from the periphery using a stopper member made of a material that transmits ultraviolet light. Manufacturing method of lens sheet.
JP1212489A 1989-08-18 1989-08-18 Manufacturing method of lens sheet Expired - Fee Related JP2838151B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1212489A JP2838151B2 (en) 1989-08-18 1989-08-18 Manufacturing method of lens sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1212489A JP2838151B2 (en) 1989-08-18 1989-08-18 Manufacturing method of lens sheet

Publications (2)

Publication Number Publication Date
JPH0375703A JPH0375703A (en) 1991-03-29
JP2838151B2 true JP2838151B2 (en) 1998-12-16

Family

ID=16623500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1212489A Expired - Fee Related JP2838151B2 (en) 1989-08-18 1989-08-18 Manufacturing method of lens sheet

Country Status (1)

Country Link
JP (1) JP2838151B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10254276A1 (en) * 2002-11-20 2004-06-03 Röhm GmbH & Co. KG Process for producing a plastic plate with a layered structure

Also Published As

Publication number Publication date
JPH0375703A (en) 1991-03-29

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