JP2838150B2 - Manufacturing method of lens sheet - Google Patents
Manufacturing method of lens sheetInfo
- Publication number
- JP2838150B2 JP2838150B2 JP1212488A JP21248889A JP2838150B2 JP 2838150 B2 JP2838150 B2 JP 2838150B2 JP 1212488 A JP1212488 A JP 1212488A JP 21248889 A JP21248889 A JP 21248889A JP 2838150 B2 JP2838150 B2 JP 2838150B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- mold
- frame
- manufacturing
- ultraviolet
- 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
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、レンズ型上に紫外線硬化型樹脂液
を展延させることとなるが、余剰の樹脂液の処理につい
て配慮する必要がある。すなわち余剰の樹脂液をレンズ
型の周辺に流下したまゝにしておくと、この部分の汚れ
だけに止まらずレンズシートの表面を汚してしまうこと
があり、余剰の樹脂液まで硬化してしまうとその除去が
煩雑であり、使用量が増えてコストアツプに通じてしま
う。(Problems to be Solved by the Invention) However, when the lens portion is formed of the above-described ultraviolet-curable resin, the ultraviolet-curable resin liquid is spread on the lens mold. Care must be taken regarding processing. That is, if the excess resin liquid is allowed to flow down to the periphery of the lens mold, the surface of the lens sheet may be stained as well as the dirt in this portion, and if the excess resin liquid is cured, The removal is complicated, and the amount of use increases, leading to cost increase.
本発明はこのような状況に鑑み、余剰の紫外線硬化型
樹脂液を硬化させずに除去ないし回収しうるようにして
レンズシートを効率よく製造しようとするものである。The present invention has been made in view of such circumstances, and aims to efficiently manufacture a lens sheet by allowing excess ultraviolet curable resin liquid to be removed or collected without being cured.
（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、レンズ型を周囲に堰
を有する作業盤上に載置し、レンズ型上に紫外線硬化型
樹脂液を展延させて、透明基材を重ねると共に周囲より
余剰の樹脂液を流下させた後、レンズ型の周囲を覆う紫
外線不透過材料からなる枠を設置し、この後紫外線を照
射させて硬化させ後に枠を取り外す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 provide an ultraviolet-curable resin liquid between a transparent substrate and a lens mold. In a method for manufacturing a lens sheet in which a lens portion is formed on at least one surface of a transparent substrate by irradiating ultraviolet rays, the lens mold is placed on a work board having a weir around the ultraviolet ray-curable resin. After spreading the liquid, layering the transparent substrate and allowing excess resin liquid to flow down from the surroundings, a frame made of an ultraviolet impermeable material covering the periphery of the lens mold is set, and then irradiated with ultraviolet light to cure The method for manufacturing a lens sheet is characterized in that the frame is removed after the operation.
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、また樹脂フイルムや無機ガラスも使用しうる。As the transparent substrate used in the present invention, a methacrylic resin plate is suitable, but besides this, a polycarbonate resin plate, a vinyl chloride resin plate, a polystyrene resin plate, or the like can be used, and a resin film or an inorganic glass can also be used. sell.
また本発明に用いる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。Further, as the lens mold used in the present invention, 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希釈モノマーは、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 at the same time 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.
そしてこれらの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。The curing of these ultraviolet-curable resin liquids can be performed by a commonly used method.
次に本発明を図面に示した工程に従つて説明する。 Next, the present invention will be described in accordance with the steps shown in the drawings.
第１図はレンズ型（１）を周囲に堰（３）を有する作
業盤（２）上に載置した状態を示しており、第２図はこ
の上から紫外線硬化型樹脂液（４）を注入し展延させ
る。次に第３図のように透明基材（５）を重ねると共
に、周囲より流下させた後、第４図のようにレンズ型
（１）の周囲に覆う紫外線不透過材料からなる枠（６）
を設置して紫外線を照射する。この枠（６）は、紫外線
を透過しない合成樹脂や金属板から作られ、例えば第６
図に示すように２分割されたものを用いると便利であ
る。そして硬化後に枠（６）を外し第５図のように脱型
してレンズシートを得る。このときの未硬化の紫外線硬
化型樹脂液（４）は、液状であるため容易に回収でき、
ろ過後再使用することもできる。FIG. 1 shows a state in which a lens mold (1) is placed on a work board (2) having a weir (3) around it, and FIG. 2 shows an ultraviolet curable resin liquid (4) from above. Inject and spread. Next, as shown in FIG. 3, a transparent substrate (5) is overlapped and allowed to flow down from the surroundings, and then a frame (6) made of an ultraviolet-impermeable material covering the periphery of the lens mold (1) as shown in FIG.
Is installed and irradiated with ultraviolet light. The frame (6) is made of a synthetic resin or a metal plate that does not transmit ultraviolet rays.
It is convenient to use one divided into two as shown in the figure. Then, after curing, the frame (6) is removed, and the mold is removed as shown in FIG. 5 to obtain a lens sheet. At this time, the uncured ultraviolet-curable resin liquid (4) can be easily recovered because it is liquid.
It can be reused after filtration.
なお、本発明に用いる作業盤（２）としては、アルミ
ニウム等の金属板で製作するとよく、このときの堰の高
さは数mmないし数cm程度とし、また１ないし２以上の堰
（３）を着脱自在にすると好都合である。The work board (2) used in the present invention may be made of a metal plate such as aluminum. The height of the weir at this time is about several mm to several cm, and one or more weirs (3) It is convenient to make it detachable.
また第７図は本発明の別の例を示すもので、作業盤
（２）上に台盤（７）を介してレンズ型（１）を載置し
たものであり、薄いレンズ型（１）を用いるときに便利
である。FIG. 7 shows another example of the present invention, in which a lens mold (1) is placed on a work board (2) via a base board (7), and a thin lens mold (1) is provided. This is convenient when using.
（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るか
ら、余剰の紫外線硬化型樹脂液をみだりに硬化しないで
除去ないし回収でき、レンズ型やレンズシートを汚すこ
となく効率よく製造しうる利点がある。(Effects of the Invention) Since the present invention has the configuration as described in detail above, it is possible to remove or collect the excess ultraviolet-curable resin liquid without inadvertently curing it, and efficiently manufacture the lens mold and lens sheet without soiling. There are potential benefits.
第１図ないし第５図は本発明の一実施例を示す各工程の
断面図、第６図は枠の斜視図、第７図は別の例を示す最
初の工程の断面図である。 （１）……レンズ型 （２）……作業盤 （３）……堰 （４）……紫外線硬化型樹脂液 （５）……透明基材 （６）……枠1 to 5 are sectional views of respective steps showing an embodiment of the present invention, FIG. 6 is a perspective view of a frame, and FIG. 7 is a sectional view of an initial step showing another example. (1) Lens type (2) Work panel (3) Weir (4) UV-curable resin liquid (5) Transparent substrate (6) Frame
───────────────────────────────────────────────────── 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)
樹脂液を介在させたのち紫外線を照射して透明基材の少
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、レンズ型を周囲に堰を有する作業盤上に
載置し、レンズ型上に紫外線硬化型樹脂液を展延させ
て、透明基材を重ねると共に周囲より余剰の樹脂液を流
下させた後、レンズ型の周囲を覆う紫外線不透過材料か
らなる枠を設置し、この後紫外線を照射させて硬化させ
後に枠を取り外す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 substrate by irradiating ultraviolet rays after interposing an ultraviolet-curable resin liquid between the transparent substrate and the lens mold. After placing the mold on a work board with a weir around it, spreading the UV curable resin liquid on the lens mold, layering the transparent substrate and allowing excess resin liquid to flow down from the surroundings, the lens mold A method of manufacturing a lens sheet, comprising: installing a frame made of a UV-opaque material covering the periphery of the lens, irradiating the frame with UV rays, curing the frame, and then removing the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1212488A JP2838150B2 (en) | 1989-08-18 | 1989-08-18 | Manufacturing method of lens sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1212488A JP2838150B2 (en) | 1989-08-18 | 1989-08-18 | Manufacturing method of lens sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0375702A JPH0375702A (en) | 1991-03-29 |
| JP2838150B2 true JP2838150B2 (en) | 1998-12-16 |
Family
ID=16623484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1212488A Expired - Fee Related JP2838150B2 (en) | 1989-08-18 | 1989-08-18 | Manufacturing method of lens sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2838150B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100485218B1 (en) * | 1997-06-30 | 2005-08-10 | 주식회사 엘지화학 | Projection TV Screen |
| US6937393B2 (en) | 1997-06-30 | 2005-08-30 | Lg Chemical Ltd. | Projection television screen |
| EP1023980B1 (en) * | 1999-01-28 | 2003-04-02 | Fujifilm Electronic Imaging Limited | Method of creating a load bearing surface |
| JP2002160232A (en) * | 2000-11-22 | 2002-06-04 | Dainippon Printing Co Ltd | Molding mold and production method for lens sheet |
| DE102012008639A1 (en) * | 2012-05-02 | 2013-11-07 | Heraeus Noblelight Gmbh | Method for producing an optical module with a silicone optic |
| CN111103640B (en) * | 2019-11-27 | 2021-11-12 | 诚瑞光学(常州)股份有限公司 | Fresnel lens metal mold manufacturing method |
-
1989
- 1989-08-18 JP JP1212488A patent/JP2838150B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0375702A (en) | 1991-03-29 |
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Legal Events
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Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
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