JPH03184001A - Lens sheet - Google Patents
Lens sheetInfo
- Publication number
- JPH03184001A JPH03184001A JP1322646A JP32264689A JPH03184001A JP H03184001 A JPH03184001 A JP H03184001A JP 1322646 A JP1322646 A JP 1322646A JP 32264689 A JP32264689 A JP 32264689A JP H03184001 A JPH03184001 A JP H03184001A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- parts
- weight
- pts
- meth
- 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
- 239000011347 resin Substances 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 28
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 9
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 claims abstract description 4
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 claims abstract description 4
- YLHXLHGIAMFFBU-UHFFFAOYSA-N methyl phenylglyoxalate Chemical compound COC(=O)C(=O)C1=CC=CC=C1 YLHXLHGIAMFFBU-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 7
- 239000011342 resin composition Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- KRIOVPPHQSLHCZ-UHFFFAOYSA-N propiophenone Chemical compound CCC(=O)C1=CC=CC=C1 KRIOVPPHQSLHCZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003999 initiator Substances 0.000 abstract 3
- 238000003848 UV Light-Curing Methods 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000001723 curing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M methacrylate group Chemical group C(C(=C)C)(=O)[O-] CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- BSMGLVDZZMBWQB-UHFFFAOYSA-N 2-methyl-1-phenylpropan-1-one Chemical compound CC(C)C(=O)C1=CC=CC=C1 BSMGLVDZZMBWQB-UHFFFAOYSA-N 0.000 description 1
- 102100026735 Coagulation factor VIII Human genes 0.000 description 1
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ビデオプロジェクションテレビのスクリーン
に用いられるフレネルレンズ、レンチキュラーレンズあ
るいは集光用のフレネルレンズ等のレンズシートに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lens sheet for a Fresnel lens, a lenticular lens, a Fresnel lens for condensing light, etc. used in a screen of a video projection television.
フレネルレンズやレンチキュ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しかも大
量に生産するときは合成樹脂の射出戒形方法が採られて
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方法が一般的である。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＼
す、生産性を上げられないという難点があった。When manufacturing lens sheets such as Fresnel lenses and lenticular lenses, the synthetic resin injection molding method is used when the size is relatively small and mass production is required. When manufacturing a relatively large lens sheet, a common method is to contact a resin plate with a flat lens mold, heat and pressurize it, and transfer the lens surface. However, when using this method, the time required for heating and cooling is long.
However, the problem was that productivity could not be increased.
このため最近では、レンズ型と透明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
方法が提案されており（特開昭６１−１７７２１５号公
報）、またこのような方法によって得たフレネルレンズ
やレンチキュラーレンズを備えた透過型スクリーンも知
られている（特開昭６３−１６７３０１号公報〉。For this reason, a method has recently been proposed in which an ultraviolet curable resin liquid is interposed between the lens mold and the transparent substrate and cured by irradiation with ultraviolet rays (Japanese Patent Application Laid-open No. 177215/1983). A transmission type screen equipped with a Fresnel lens or a lenticular lens obtained by such a method is also known (Japanese Patent Application Laid-open No. 167301/1983).
ところで上記の如きレンズシートを製造する場合、紫外
線硬化型樹脂の性能としては、透明基板との密着性、レ
ンズ型からの離型性、硬化後のレンズ部の強度や形態保
持性あるいは光の透過性能等が要求される。By the way, when manufacturing the above lens sheet, the performance of the ultraviolet curable resin is determined by its adhesion to the transparent substrate, releasability from the lens mold, strength and shape retention of the lens portion after curing, and light transmission. Performance etc. are required.
このような観点から上記２つの特許公報に開示された方
法についてみると、前者の方法では具体的な紫外線硬化
型樹脂についての説明がなされておらず、また後者のス
クリーンにおいては、硬化する前の粘度が５００ｃｐｓ
以下、硬化による重合収縮率が１０％以下、硬化後のヤ
ング率が５，０００〜３０．０００ｋｇ ／ ｃ４の紫
外線硬化型樹脂を用いることを特徴としている。しかし
ながら、このような紫外線硬化型樹脂を用いた場合、ヤ
ング率が高すぎてレンズ型からの脱型がむつかしく、強
引に脱型するとレンズ部に欠けを生じることがあり、ま
た同特許で最適として用いている特定の紫外線硬化型樹
脂は、硬化後に着色があってレンズとして好ましくない
ことが確認されている。Looking at the methods disclosed in the above two patent publications from this point of view, the former method does not provide any specific explanation about the ultraviolet curable resin, and the latter screen does not provide any explanation about the ultraviolet curable resin before curing. Viscosity is 500cps
Hereinafter, it is characterized by using an ultraviolet curable resin having a polymerization shrinkage rate of 10% or less upon curing and a Young's modulus after curing of 5,000 to 30,000 kg/c4. However, when such ultraviolet curable resin is used, the Young's modulus is too high and it is difficult to remove it from the lens mold.If the mold is forcibly removed, the lens part may chip. It has been confirmed that the specific ultraviolet curable resin used is undesirable for lenses because it is colored after curing.
本発明者は、上記のような状況に鑑み、硬化後における
紫外線硬化型樹脂が上述のように硬いものを用いると離
型が困難になることから、むしろ柔かい樹脂にするほう
が好結果を得られることに着目し、本発明を完成するに
到った。In view of the above-mentioned circumstances, the inventors of the present invention believe that if a hard ultraviolet curable resin is used after curing, it will be difficult to release the mold, so it is better to use a softer resin to obtain better results. By paying attention to this, we have completed the present invention.
本発明の目的は、レンズ型からの脱型が容易で、脱型時
に欠けおよび傷を生じ難く、また透明度が高く、着色が
小さいレンズシートを提供するにある。An object of the present invention is to provide a lens sheet that can be easily demolded from a lens mold, is less likely to be chipped or scratched during demolding, has high transparency, and has little discoloration.
本発明が提供するレンズシートは、
透明基材の少なくとも一面に、紫外線硬化型樹脂による
レンズ部が形成されたレンズシートであって、このレン
ズ部の形成に用いられる紫外線硬化型樹脂が、下記一般
式（１）
％式％（）
が２〜１２の正の整数）
で表されるジ（メタ）アクリレート３０〜７０重量部お
よび下記一般式（ＩＩ）
ＣＩ。The lens sheet provided by the present invention is a lens sheet in which a lens portion made of an ultraviolet curable resin is formed on at least one surface of a transparent base material, and the ultraviolet curable resin used for forming the lens portion is one of the following general 30 to 70 parts by weight of di(meth)acrylate represented by formula (1) (% formula % ( ) is a positive integer of 2 to 12) and the following general formula (II) CI.
（Ｒ５はＨまたはＣ）Ｉｓ）
で表される（メタ）アクリレート３０〜７０重量部より
なる組成物（Ａ）１００重量部に、光開始剤としてメチ
ルベンゾイルホルメート、１−ヒドロキシシクロへキシ
ルフェニルケトンおよび２−ヒドロキシ−２−メチル−
１−フェニルプロパン−■−オンの中から選ばれた少く
とも１種を０，１〜５重量部加えてなる樹脂組成物であ
ることを特徴とする。(R5 is H or C)Is) To 100 parts by weight of a composition (A) consisting of 30 to 70 parts by weight of (meth)acrylate represented by Ketones and 2-hydroxy-2-methyl-
The resin composition is characterized by containing 0.1 to 5 parts by weight of at least one selected from 1-phenylpropane-1-one.
以下、本発明のレンズシートを更に詳細に説明する。Hereinafter, the lens sheet of the present invention will be explained in more detail.
本発明のレンズシートのレンズ部の形成に用いる紫外線
硬化型樹脂はその第一の成分として下記一般式（■）：
ＣＩ（。The ultraviolet curable resin used for forming the lens portion of the lens sheet of the present invention has the following general formula (■): CI(.
Ｒ３０Ｒａ
１ｌ
−（ＣＨｔ−ＣＨ−０，）ｉ−Ｃ−Ｃ＝ ＣＨｚ
（１）（Ｒ，−Ｒ，はＨまたはＣ１，、ｍ、ｎは（ｍ
＋ｎ）が２〜１２の正の整数）
で表わされるジ（メタ）アクリレートを３０〜７０重量
部含んでいなければならない。第一の成分が３０重量部
未満であると架橋部が極度に減少するため、強度が不充
分となり、型からの脱型時に樹脂成分が型上に残留しや
すくなる。また、第一の成分が７０重量部を超えると紫
外線硬化樹脂液をレンズ型に展延した際に、粘度が高い
ためだと思われるが、型上に気泡を噛み込み易く抜けに
くくなる。R30Ra 1l -(CHt-CH-0,)i-C-C= CHz
(1) (R, -R, is H or C1,, m, n is (m
+n) is a positive integer of 2 to 12) and must contain 30 to 70 parts by weight of di(meth)acrylate. If the first component is less than 30 parts by weight, the number of crosslinked parts will be extremely reduced, resulting in insufficient strength and the resin component will tend to remain on the mold when removed from the mold. Furthermore, if the first component exceeds 70 parts by weight, when the ultraviolet curable resin liquid is spread into a lens mold, air bubbles tend to get caught on the mold and become difficult to come out, probably due to the high viscosity.
第一の成分の具体例としては、下記式で表されるジ（メ
タ）アクリレートが挙げられる。A specific example of the first component is di(meth)acrylate represented by the following formula.
ＣＩ。C.I.
（ｍ＋ ＋ｎ。(m+ +n.
＝１０）
ｎｃｌｂ−ＣＨｚ
１
０ｉＣ−ＣＨ＝ＣＨｚ
（ｍ ｚ
＋ｎｚ
＝４）
本発明で用いる上記紫外線硬化型樹脂はその第二成分と
して下記一般式（ＩＩ）
ＣＨ３
（Ｒ。=10) nclb-CHz 10iC-CH=CHz (m z +nz =4) The ultraviolet curable resin used in the present invention has the following general formula (II) CH3 (R) as its second component.
はＨまたはＣＨ３）
で表わされる（メタ）アクリレートを３０〜７０重量部
含んでいなければならない、第二成分が３０重量部未満
になると、他成分の粘度が高くこれを緩和できないため
だと思われるがレンズ型に紫外線硬化型樹脂液を展延し
た際に型上に気泡を噛み込みやすく、抜けにくくなる。must contain 30 to 70 parts by weight of (meth)acrylate represented by H or CH3).If the second component is less than 30 parts by weight, the viscosity of the other components is high and it cannot be relaxed. However, when the UV-curable resin liquid is spread on a lens mold, air bubbles tend to get trapped on the mold, making it difficult to remove.
また、第二成分が７０重量部を超えると、架橋部の減少
に伴い、強度が不充分となり、型からの脱型時に樹脂成
分が型上に残留し易くなる。Moreover, if the second component exceeds 70 parts by weight, the strength becomes insufficient due to the decrease in crosslinked parts, and the resin component tends to remain on the mold when removed from the mold.
上記第一および第二の成分は上記比率で配合することに
より、レンズ型からの脱型が容易であり、かつレンズの
形態保持性にも優れ、光線透過率の高い紫外線硬化型樹
脂が得られる。更に、組成物の粘度が低く、型への展延
が容易で気泡を噛み込みにくく、抜は易い特徴をもって
いる。また、重合収縮率も小さく、かつ軟質なポリマー
となるため、二層構造をとったがために生じ易い反りも
殆んどないものが得られる。By blending the first and second components in the above ratio, it is possible to obtain an ultraviolet curable resin that is easy to remove from the lens mold, has excellent lens shape retention, and has high light transmittance. . Furthermore, the viscosity of the composition is low, it is easy to spread into a mold, it is difficult to trap air bubbles, and it is easy to remove. Furthermore, since the polymer has a small polymerization shrinkage rate and is soft, it is possible to obtain a product with almost no warping that is likely to occur due to the two-layer structure.
上記第−成分と第二成分とからなる樹脂組成物（Ａ）に
おいて、メタクリレート基を有する化合物は３０〜６０
重量部含まれることがより好ましい。In the resin composition (A) consisting of the above-mentioned first component and second component, the compound having a methacrylate group has 30 to 60
More preferably, it is contained in parts by weight.
メタクリレート基を有する化合物が過少であると反応が
進行し易く、反応熱の制御をすることが困難となり、逆
に、過大であると反応が進行しにくくな、す、紫外線照
射量を多くしなければならないからである。If the amount of the compound having a methacrylate group is too small, the reaction will proceed easily and it will be difficult to control the reaction heat.On the other hand, if the amount of the compound is too large, the reaction will be difficult to proceed, so the amount of ultraviolet irradiation must be increased. This is because it must be done.
本発明において紫外線硬化型樹脂に用いる光開始剤とし
ては、メチルベンゾイルホルメート、１−ヒドロキシシ
クロへキシルフェニルケトンおよび２−ヒドロキシ−２
−メチル−１−フェニルプロパン−１−オンの中から選
ばれた１種または２種以上を使用する。光開始剤の添加
量は組成物（Ａ） １００重量部に対して０．１−５
．０重量部でなくてはならない。これらの光開始剤は、
反応前・後共に比較的着色が少なく、レンズシート等の
光学特性を要求される場合に極めて秀れている。これら
の光開始剤の添加量が＆ＩＩ或物（Ａ＞１００重量部に
対して００１重量部未満であると反応性が低下し、充分
硬化しないことがある。また、５． Ｏ！置部を超える
と光学特性に秀れた光開始剤とはいえ、わずかな着色が
認められる。In the present invention, photoinitiators used in the ultraviolet curable resin include methyl benzoyl formate, 1-hydroxycyclohexylphenyl ketone, and 2-hydroxy-2
- One or more selected from methyl-1-phenylpropan-1-one is used. The amount of photoinitiator added is 0.1-5 per 100 parts by weight of composition (A).
．． Must be 0 parts by weight. These photoinitiators are
There is relatively little coloring both before and after the reaction, making it extremely excellent when optical properties are required, such as in lens sheets. If the amount of these photoinitiators added is less than 001 parts by weight relative to A>100 parts by weight, the reactivity may decrease and the curing may not be sufficient. If it exceeds this amount, slight coloring will be observed even though the photoinitiator has excellent optical properties.
また、本発明のレンズシートの透明基材としては、ガラ
スやプラスチックが使用しうるが、アクリル樹脂、ポリ
カーボネート樹脂、ポリスチレン樹脂等の樹脂板あるい
はこれらを含む透明樹脂のフィルムを使用するのが好ま
しい。Further, as the transparent base material of the lens sheet of the present invention, glass or plastic can be used, but it is preferable to use a resin plate such as acrylic resin, polycarbonate resin, polystyrene resin, or a transparent resin film containing these.
以下、本発明を具体的に実施例について説明する。 Hereinafter, the present invention will be specifically described with reference to examples.
なお実施例に用いた緒特性の評価は以下の方法で行った
。The characteristics of the fibers used in the Examples were evaluated by the following method.
（１）重合収縮率
紫外線硬化型樹脂組成物（モノマー混合物）の２５°Ｃ
における比重（ｄ＋ｉ）および紫外線硬化型樹脂組成物
（硬化後）の２５°Ｃにおける比重（ｄｐ）を測定し、
下記式により算出した。(1) Polymerization shrinkage rate of ultraviolet curable resin composition (monomer mixture) at 25°C
Measure the specific gravity (d + i) at 25 ° C and the specific gravity (dp) of the ultraviolet curable resin composition (after curing),
Calculated using the following formula.
ｄｐ −ｄｍ 重合収縮率 ｓ＝ ｘｌＯＯ（％）ｄｐ （２）粘度 東京計器■製Ｂ型粘度計ＢＭ型を用いて測定した。dp -dm Polymerization shrinkage rate s= xlOO(%)dp (2) Viscosity Measurement was performed using a B-type viscometer BM model manufactured by Tokyo Keiki ■.
（３）反り（平置したときの浮き）
水平乎台上に３００ｍｍ角の試料を置き、四隅の浮きを
測定し、４点の平均値を求めた。(3) Warpage (lifting when placed horizontally) A 300 mm square sample was placed on a horizontal table, the warping at the four corners was measured, and the average value of the four points was determined.
（４）全光線透過率
１ｍｍ厚の紫外線硬化型樹脂シートを作威し、ＡＳＴＭ
Ｄ １００３に準拠して測定した。(4) Created an ultraviolet curable resin sheet with a total light transmittance of 1 mm, and achieved ASTM
Measured according to D 1003.
（５）脱型
９００ Ｘ １２００ｍｍのニッケルスタンパ−を総重
量４０Ｕとなるように架台に固定し、このスタンパ−上
に紫外線硬化型樹脂を流延させ、この上に８９０×１１
９０ｍｍの透明アクリル樹脂板を重ね、紫外線を照射し
て硬化させた後、隅部より剥離して、その状態を観察、
評価した。評価結果は次の基準で示した。(5) Demolding A 900 x 1200 mm nickel stamper was fixed on a stand so that the total weight was 40U, an ultraviolet curing resin was cast on the stamper, and an 890 x 11 mm nickel stamper was cast on the stamper.
After stacking 90mm transparent acrylic resin plates and curing them by irradiating them with ultraviolet rays, peel them off from the corners and observe the condition.
evaluated. The evaluation results were shown based on the following criteria.
剥離時に、スタンパ−１架台が移動しないもの：○
剥離時に、スタンパ−は移動するが剥離できるもの：Δ
剥離時に、スタンパ−が移動し、欠は等が発生するもの
：×
１〜４、 ′ １〜３
第１表に示すような組成をもった紫外線硬化型樹脂組成
物を−製し、各々に光開始剤を添加した。Stamper 1 stand does not move during peeling: ○ Stamper moves but can be peeled off: Δ Stamper moves during peeling, causing chips, etc.: × 1 to 4, ' 1-3 Ultraviolet curable resin compositions having the compositions shown in Table 1 were prepared, and a photoinitiator was added to each.
各組成物６００ ｇを、９００ ｘ １２００閣のニッ
ケルスタンパ−を範型１４０ｋｇとなるように架台に固
定したレンズ型に流延させた後、８９０Ｘ１１９０ｍｍ
の透明アクリル樹脂板（三菱レイヨン社製「アクリライ
）１０００．厚さ３ＩＩＩＩＩｌ：紫外線吸収剤を含ま
ないもの）を重ね、８０Ｗ／ｃｍ高圧水銀灯を用いて７
６０ｍＪ／ｃｊの積算紫外線量の紫外線を照射して硬化
させた。600 g of each composition was cast onto a lens mold with a nickel stamper measuring 900 x 1200 mm fixed on a stand so that the model weighed 140 kg, and then molded into a lens mold of 890 x 1190 mm.
Transparent acrylic resin plates (Mitsubishi Rayon Co., Ltd.'s "Akrylai" 1000.Thickness: 3III1: containing no ultraviolet absorber) were stacked and heated using an 80W/cm high-pressure mercury lamp.
It was cured by irradiating ultraviolet rays with an integrated amount of ultraviolet rays of 60 mJ/cj.
なお、 第１表における化合物は下記の通りである。In addition, The compounds in Table 1 are as follows.
・ＦＡ−３２１Ｍ ：日立化成社製 ＣＨ。・FA-321M: Manufactured by Hitachi Chemical CH.
（ｍ＋
＋旧
＝１０）
・Ａ−ＢＰＥ−４
：新中村化学社製
ｒＮＫエステル」
１
→ＣＨｚ−ＣＨｚ−ＯｉＣ−ＣＨ＝ＣＨｚ（ｍ ｚ
＋ｎｔ
＝４）
・ＩＢ−ＸＡ
：共栄社油脂化学社製「ライ
トエステル」
ｔｔｚ
・ＩＢ−Ｘ ：共栄社油脂化学社製「ライトエステル」
Ｈ３
・ＨＸ：１．６−ヘキサンシオールジメタクリレート
・ＨＥＭＡ ： ２−ヒドロキシエチルメタクリレート
・ＨＭＰＰ：２−ヒドロキシ−２−メチル−１−フェニ
ルプロパン−１−オン
・ＭＢＦ ：メチルベンゾイルホルメート・ＨＣＰＫ
：１−ヒドロキシシクロへキシルフェニルケトン
本発明のレンズシートの特長を列挙すると以下のとおり
である。(m+ + old = 10) ・A-BPE-4: rNK ester manufactured by Shin-Nakamura Chemical Co., Ltd. 1 → CHz-CHz-OiC-CH=CHz (m z + nt = 4) ・IB-XA: manufactured by Kyoeisha Oil and Fat Chemical Co., Ltd. "Light ester" ttz ・IB-X: "Light ester" manufactured by Kyoeisha Yushigakusha Co., Ltd.
H3 ・HX: 1.6-hexanethiol dimethacrylate ・HEMA: 2-hydroxyethyl methacrylate ・HMPP: 2-hydroxy-2-methyl-1-phenylpropan-1-one ・MBF: methylbenzoylformate ・HCPK
:1-Hydroxycyclohexylphenylketone The features of the lens sheet of the present invention are listed below.
レンズ型からの脱型が容易である。It is easy to remove from the lens mold.
脱型時に欠け、傷を生じにくい。Resistant to chipping and scratches during demolding.
透明性が高い。Highly transparent.
着色が少ない。Less coloring.
搬送中に欠け、傷を生じにくい。Less likely to be chipped or damaged during transportation.
クラックが発生しにくい。Cracks are less likely to occur.
反りが少ない。Less warping.
製造が容易である。Easy to manufacture.
Claims (1)
よるレンズ部が形成されたレンズシートであって、この
レンズ部の形成に用いられる紫外線硬化型樹脂が、下記
一般式（ I ） ▲数式、化学式、表等があります▼（ I ） （Ｒ＿１〜Ｒ＿４はＨまたはＣＨ＿３，ｍ，ｎは（ｍ＋
ｎ）が２〜１２の正の整数） で表されるジ（メタ）アクリレート３０〜７０重量部お
よび下記一般式（II） ▲数式、化学式、表等があります▼（II） （Ｒ＿５はＨまたはＣＨ＿３） で表される（メタ）アクリレート３０〜７０重量部より
なる組成物（Ａ）１００重量部に、光開始剤としてメチ
ルベンゾイルホルメート、１−ヒドロキシシクロヘキシ
ルフェニルケトンおよび２−ヒドロキシ−２−メチル−
１−フェニルプロパン−１−オンの中から選ばれた少く
とも１種を０．１〜５重量部加えてなる樹脂組成物であ
ることを特徴とするレンズシート。[Claims] 1. A lens sheet in which a lens portion made of an ultraviolet curable resin is formed on at least one surface of a transparent base material, wherein the ultraviolet curable resin used to form the lens portion has the following general formula: (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) (R_1 to R_4 are H or CH_3, m, n are (m+
(n) is a positive integer of 2 to 12) 30 to 70 parts by weight of di(meth)acrylate and the following general formula (II) ▲ Numerical formulas, chemical formulas, tables, etc. are available ▼ (II) (R_5 is H or CH_3) 100 parts by weight of composition (A) consisting of 30 to 70 parts by weight of (meth)acrylate represented by methyl benzoyl formate, 1-hydroxycyclohexyl phenyl ketone and 2-hydroxy-2-methyl as photoinitiators. −
1. A lens sheet comprising a resin composition containing 0.1 to 5 parts by weight of at least one selected from 1-phenylpropan-1-one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1322646A JPH03184001A (en) | 1989-12-14 | 1989-12-14 | Lens sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1322646A JPH03184001A (en) | 1989-12-14 | 1989-12-14 | Lens sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03184001A true JPH03184001A (en) | 1991-08-12 |
Family
ID=18146026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1322646A Pending JPH03184001A (en) | 1989-12-14 | 1989-12-14 | Lens sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03184001A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992012851A2 (en) * | 1991-01-17 | 1992-08-06 | Ophthalmic Research Group International Corp. | Method and apparatus for the production of plastic lenses |
| WO1996011964A1 (en) * | 1994-10-18 | 1996-04-25 | Mitsubishi Rayon Co., Ltd. | Actinic-radiation-curable composition and lens sheet |
| JP2009138171A (en) * | 2007-09-18 | 2009-06-25 | Sumitomo Chemical Co Ltd | Optical film and method for producing the same |
-
1989
- 1989-12-14 JP JP1322646A patent/JPH03184001A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992012851A2 (en) * | 1991-01-17 | 1992-08-06 | Ophthalmic Research Group International Corp. | Method and apparatus for the production of plastic lenses |
| WO1992012851A3 (en) * | 1991-01-17 | 1992-12-23 | Ophthalmic Res Group Int | Method and apparatus for the production of plastic lenses |
| WO1996011964A1 (en) * | 1994-10-18 | 1996-04-25 | Mitsubishi Rayon Co., Ltd. | Actinic-radiation-curable composition and lens sheet |
| JP2009138171A (en) * | 2007-09-18 | 2009-06-25 | Sumitomo Chemical Co Ltd | Optical film and method for producing the same |
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