JP2022075860A - インサート成形用機能性偏光素子および機能性偏光レンズ - Google Patents
インサート成形用機能性偏光素子および機能性偏光レンズ Download PDFInfo
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Images
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Abstract
Description
光レンズが得られる。
またこれを用いてインサート成形された機能性偏光レンズは、上記利点を備え、かつ製造効率も改善できるものであり、生産性に優れたものになる。
図1に示す第1実施形態は、椀状にプレス成形されたポリビニルアルコール(PVA)フィルムからなる偏光膜1の凹面側に、透明性接着剤100質量部に対して機能性染料を4~20質量部配合した塗材を塗装及び乾燥させて硬化塗膜2を形成し、偏光膜1の凸面側は透明性接着剤の硬化塗膜3で被覆されたインサート成形用機能性偏光素子Aとしたものである。
(1) 2-ヒドロキシ-4-n-オクトキシベンゾフェノン
(2) 4-ドデシロキシ-2-ヒドロキシベンゾフェノン
(3) 2-2´-ヒドロキシ-4-メトキシベンゾフェノン
(1) N,N,N´,N´-テトラキス(p-置換フェニル)-p-フェニレンジアミン類、ベンジジン類及びそれらのアルミニウム塩、ジイモニウム塩からなる赤外線吸収剤。
(2) N,N,N´,N´-テトラアリールキノンジイモニウム塩類。
(3) ビス-(p-ジアルキルアミノフェニル)〔N,N-ビス(p-ジアルキルアミノフェニル)p-アミノフェニル〕アミニウム塩。
物が挙げられる。
えば、日本油脂製:コーポレックス、屈折率1.56)、またイソシアネートとポリチオールを化合させた周知の高屈折率樹脂(例えば、三井化学社製:チオウレタン系樹脂MR-
7、屈折率1.67)であるチオウレタン樹脂も代表例として挙げられる。
ポリビニルアルコール(PVA)フィルムを椀状にプレス成形した偏光膜の凹面側に特定波長域吸収性が備わるように、2液反応型のポリウレタン系で透明性の弾性接着剤(クライベリットジャパン社製:VP9446/10)100質量部に対してハイコントラスト用機能性染料(山田化学工業社製:TAP9)を8質量部配合して溶解した塗材を用意し、これをスプレーコーティングし、乾燥させて厚さ20μmの硬化塗膜を形成した。
ポリビニルアルコール(PVA)フィルムを椀状にプレス成形した偏光膜にフォトクロミック機能性が備わるように、2液反応型のポリウレタン系で透明性の弾性接着剤(クライベリットジャパン社製:VP9446/10)100質量部に対して、スピロオキサジン系フォトクロミック化合物(山田化学工業社製:PSP-33)20質量部を配合し溶解した塗材を用意し、これをディップコーティング(浸漬塗装)し、乾燥硬化させて厚さ100μmの硬化塗膜を形成し、偏光膜の両面にフォトクロミック機能性のある非粘着性で弾性のある硬化塗膜を被覆したインサート成形用機能性偏光素子を製造した。
ポリビニルアルコール(PVA)フィルムを椀状にプレス成形した偏光膜の凹面側に特定3波長域に吸収性をもたせるため、ジクロロメタンを主成分とするアクリル系で透明性の弾性接着剤(三陽工業社製:サンボンド)100質量部に対して、ハイコントラスト用機能性染料(山田化学工業社製:TAP9)4質量部、波長473nmに最大吸収波長とするブルーライトカット染料(山田化学社製:FDB006)2質量部、波長754nmに最大吸収波長とする赤外線吸収性染料(山田化学社製:FDN001)1.5質量部を配合して溶解した塗材を用意し、これをスプレーコーティングし、乾燥させて厚さ40μmの弾性のある非粘着性の硬化塗膜を形成した。
ポリビニルアルコール(PVA)フィルムを椀状にプレス成形した偏光膜の凹面側に特定2波長域の吸収性が備わるように、ジクロロメタンを主成分とするアクリル系で透明性の弾性接着剤(三陽工業社製:サンボンド)100質量部に対し、ハイコントラスト用機能性染料(山田化学工業社製:TAP9)6質量部、波長473nmに最大吸収波長とするブルーライトカット染料(山田化学社製:FDB006)3質量部を配合して溶解した塗材を用意し、これをスピンコーティングし、乾燥させて非粘着性の厚さ30μmの弾性硬化塗膜を形成した。
アリルジグリコールカーボネート樹脂(CR39)を用いて肉厚10mmの透明レンズを、肉厚8mm~20mmの範囲で種々のカーブ(1カーブ、2カーブ、4カーブ、6カーブ、8 カーブなど)の透明レンズを作製した。
実施例1、2で得られたインサート成形用機能性偏光素子を用いてインサート成形により眼鏡用の機能性偏光レンズ(実施例5,6)を製造した。
実施例5において、実施例1で得られた機能性偏光素子を用いてインサート成形することに代えて、ヨウ素を吸着させたポリビニルアルコール(PVA)フィルムを椀状にプレス成形したヨウ素系の偏光膜を用い、さらにインサート成形に用いるポリウレタン系樹脂材料に対して、ハイコントラスト用機能性染料(山田化学工業社製:TAP9)を実施例1で用いた量と同量添加したこと以外は、実施例5と同様に作製して眼鏡用の機能性偏光レンズを得た。
実施例3、4で得られたインサート成形用機能性偏光素子を用い、実施例5、6と同様にインサート成形して眼鏡用の機能性偏光レンズを製造した。
性眼鏡用偏光レンズを得た。
2、3 硬化塗膜
4、5 レンズ基材
6a、6b ガスケット
7a、7b 樹脂注入孔
8a、8b オーバーフロー孔
9、10 モールド
11 ばねクリップ
Claims (5)
- 偏光膜の片面又は両面が、透明性接着剤100質量部に対して機能性染料を4~20質量部を含有する硬化塗膜で被覆された偏光素子からなるインサート成形用機能性偏光素子。
- 上記透明性接着剤が、ウレタン樹脂系接着剤、アクリル樹脂系接着剤またはエポキシ樹脂系接着剤からなる透明性接着剤である請求項1に記載のインサート成形用機能性偏光素子。
- 上記機能性染料が、赤外線吸収性染料、紫外線吸収性染料、特定波長域吸収性染料またはフォトクロミック染料である請求項1または2に記載のインサート成形用機能性偏光素子。
- 前記硬化塗膜の厚さが、0.01~0.2mmである請求項1~3のいずれかに記載のインサート成形用機能性偏光素子。
- 請求項1~4のいずれかに記載のインサート成形用機能性偏光素子に対し、重ねて一体に樹脂製レンズ基材を設けた機能性偏光レンズ。
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