JP4009287B2 - Manufacturing method of resin optical transmitter array - Google Patents
Manufacturing method of resin optical transmitter array Download PDFInfo
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- JP4009287B2 JP4009287B2 JP2004377185A JP2004377185A JP4009287B2 JP 4009287 B2 JP4009287 B2 JP 4009287B2 JP 2004377185 A JP2004377185 A JP 2004377185A JP 2004377185 A JP2004377185 A JP 2004377185A JP 4009287 B2 JP4009287 B2 JP 4009287B2
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Description
本発明は、樹脂製光伝送体アレイの製法に関する。 The present invention relates to a method for producing a resin optical transmitter array.
屈折率分布型棒状レンズ等の棒状光伝送体を２枚の基板間に複数並行配列させ接着剤で固定した光伝送体アレイは、ファクシミリ、複写機等の画像伝送体として用いられているが、その光伝送体アレイの製造において、光伝送体の露出配列端面は、順次研磨材の砥粒を細かくして研磨する研磨処理法、或いは荒研磨後透明な樹脂をスプレイ、ディッピング等により塗布し硬化するコーテイング処理法により光学部品として必要な表面状態に処理されている。 An optical transmission array in which a plurality of rod-shaped optical transmission bodies such as a gradient index rod-shaped lens are arranged in parallel between two substrates and fixed with an adhesive is used as an image transmission body for facsimiles, copying machines, etc. In the manufacture of the optical transmitter array, the exposed array end face of the optical transmitter is hardened by applying a polishing process in which the abrasive grains are polished in order, or by applying a transparent resin after rough polishing by spraying, dipping, or the like. It is processed into a surface state necessary as an optical component by a coating processing method.
しかしながら、研磨処理法においては、優れた光学的特性が得られるが、前の研磨での砥粒の大きい研磨材が残留した状態で砥粒の細かい研磨材で研磨した場合、研磨面の傷つきを生じ研磨効率を著しく低下させるので、研磨段階毎に前の研磨材を完全に除去しなけれならず、処理装置及び処理工程が煩雑となり処理効率が低いという問題があり、また、コーテイング処理法においては、生産性が高いが、光伝送体とコーテイング材とに屈折率差がある場合、荒研磨で残る傷の部分で光の屈折・散乱が生じ、また光伝送体の露出配列端面やコーテイング面の凹凸化、コーテイング面の巣等が発生し易く、研磨処理法に比べ光学的特性が劣るという問題がある。 However, in the polishing method, excellent optical characteristics can be obtained. However, when polishing is performed with a fine abrasive material in a state where a large abrasive material remains in the previous polishing, the polished surface is damaged. As a result, the polishing efficiency is remarkably reduced, so the previous abrasive must be completely removed at each polishing stage, and there is a problem that the processing equipment and processing steps become complicated and the processing efficiency is low, and in the coating processing method, Although the productivity is high, if there is a difference in the refractive index between the optical transmission body and the coating material, the light is refracted and scattered at the scratched part left by rough polishing, and the exposed end face and coating surface of the optical transmission body There is a problem that unevenness, coating nests, etc. are likely to occur, and the optical properties are inferior to those of the polishing method.
本発明の目的は、優れた光学的特性を有する樹脂製光伝送体アレイを生産性高く得ることにある。 An object of the present invention is to obtain a resin optical transmitter array having excellent optical characteristics with high productivity.
本発明は、２枚の樹脂製基板間に複数の樹脂製棒状光伝送体が並行配列され接着剤で固定された光伝送体アレイの光伝送体の露出配列端面を先端に直線部分を有する単結晶ダイヤモンド刃の該直線部分によって切削代２０〜５００μｍで切削することを特徴とする樹脂製光伝送体アレイの製法にある。
The present invention provides a single linear section with the exposed array end face of an optical transmission body of an optical transmission body array in which a plurality of resin rod-shaped optical transmission bodies are arranged in parallel between two resin substrates and fixed with an adhesive. In the method for producing a resinous optical transmitter array, the linear portion of the crystal diamond blade is cut at a cutting allowance of 20 to 500 μm.
本発明によれば、研磨処理法によると同等の光学特性を有する光伝送体アレイが得られ、しかも処理工程が簡略化され、光学部品として使用可能な光伝送体アレイを生産性高く低コストで得ることができるものである。 According to the present invention, an optical transmitter array having optical characteristics equivalent to those obtained by the polishing method can be obtained, and the processing steps can be simplified, and an optical transmitter array that can be used as an optical component can be produced with high productivity and at low cost. It can be obtained.
本発明が適用される樹脂製光伝送体アレイは、２枚の樹脂製の基板間に複数の樹脂製棒状光伝送体が並行配列され接着剤で固定された光伝送体アレイであり、構成部材が切削時にダイヤモンド刃に損傷を与えなければ、光伝送体アレイを構成する光伝送体、基板、接着剤或いは必要に挿入されるスペーサー、及び光伝送体アレイの形成方法については、特に限定されるものではない。 The resin optical transmitter array to which the present invention is applied is an optical transmitter array in which a plurality of resin rod-shaped optical transmitters are arranged in parallel between two resin substrates and fixed with an adhesive. If the diamond blade is not damaged at the time of cutting, the optical transmitter constituting the optical transmitter array, the substrate, the adhesive or the spacer inserted as necessary, and the method of forming the optical transmitter array are particularly limited. It is not a thing.
本発明においては、光伝送体アレイの樹脂製光伝送体の露出配列端面を単結晶ダイヤモンド刃を用いて切削することが必須であり、ダイヤモンド刃による切削工程の一例を図面で説明すると、図１に示すように、光伝送体アレイ１を切削時の負荷により光伝送体アレイ１がずれたり振動したりしないよう固定治具２に固定用クランプ３で固定する。次いで、図２に示すように、ダイヤモンド刃６が取り付けられた回転ヘッド７をモータ８で回転させ、移動レール５上に載置した光伝送体アレイ１を固定した固定治具２を移動させるようにした切削装置にて、光伝送体アレイ１の樹脂製光伝送体の露出配列端面をダイヤモンド刃６で切削する。
In the present invention, it is essential to cut the exposed array end face of the resin optical transmission body of the optical transmission body array with a single crystal diamond blade, and an example of the cutting process with the diamond blade will be described with reference to FIG. As shown in FIG. 4, the optical transmission element array 1 is fixed to the
切削の際の切削代は、好ましくは２０〜５００μｍとするが、樹脂製光伝送体の露出配列端面の凹凸が著しい場合は、予め荒切削等により凹凸を小さくしておくことが望ましい。 The cutting allowance at the time of cutting is preferably 20 to 500 μm. However, when the unevenness of the exposed array end face of the resin optical transmission body is remarkable, it is desirable to reduce the unevenness beforehand by rough cutting or the like.
本発明によれば、研磨処理法によるものと同等の光学特性が得られ、しかもコーテイング処理法よりも簡略化された表面処理工程で製造することができる。 According to the present invention, optical characteristics equivalent to those obtained by the polishing treatment method can be obtained, and the surface treatment step can be manufactured by a simpler surface treatment method than the coating treatment method.
以下、本発明を実施例により具体的に説明する。 Hereinafter, the present invention will be specifically described by way of examples.
（実施例１）
樹脂製光伝送体アレイとして、樹脂製基板、黒色樹脂製スペーサー、樹脂製棒状レンズの構成で、基板と棒状レンズとスペーサーの間はカーボンブラック２ｗｔ％配合の反応型エポキシ系接着剤で充填硬化されてなる棒状レンズが２列配列のレンズアレイを用いた。このレンズアレイを７ｍｍ幅に通常のカッターで切断した後、レンズアレイの両端のレンズが露出した配列端面をそれぞれダイヤモンド刃で幅が６．８ｍｍとなるように切削した。用いたダイヤモンド刃は、単結晶ダイヤモンドである天然ダイヤモンドからなるもので、刃先形状が切削刃先端に直線刃を有する直線刃タイプで直線刃部の長さはレンズアレイの厚さより１ｍｍ程度長く、切削面が直線刃刃幅に収まるようにセッティングして切削を行った。
Example 1
The resin optical transmission array is composed of a resin substrate, a black resin spacer, and a resin rod lens. The space between the substrate, the rod lens and the spacer is filled and cured with a reactive epoxy adhesive containing 2 wt% carbon black. A lens array having a two-row array of rod lenses was used. The lens array was cut to a width of 7 mm with a normal cutter, and the arrayed end faces where the lenses at both ends of the lens array were exposed were cut with a diamond blade so that the width was 6.8 mm. The diamond blade used is made of natural diamond, which is a single crystal diamond. The blade edge shape is a straight blade type having a straight blade at the tip of the cutting blade, and the length of the straight blade portion is about 1 mm longer than the thickness of the lens array. Cutting was performed by setting the surface to be within the straight blade width.
得られた切削面は非常に平滑であった。このようにして得られたレンズアレイの８１ｐ／ｍｍでのＭＴＦの測定による光学特性は、レンズアレイのレンズの露出配列端面を、ダイヤモンド刃による切削に代えて、ラッピングペーパーを用い研磨材砥粒が粗いものから細かいものに順次換え最終段階で砥粒粒度０．３μｍのもので仕上げる研磨処理を施して得たレンズアレイの光学特性と同じであった。 The cutting surface obtained was very smooth. The optical characteristics of the lens array obtained in this way by MTF measurement at 81 p / mm were determined by using abrasive paper with lapping paper instead of cutting the exposed array end face of the lens of the lens array with a diamond blade. The optical characteristics of the lens array were the same as those obtained by applying a polishing process in which the grain size was changed to 0.3 μm in the final stage, and the order was changed from coarse to fine.
（比較例１）
樹脂製光伝送体アレイとして、樹脂製基板、黒色樹脂製スペーサー、樹脂製棒状レンズの構成で、基板と棒状レンズとスペーサーの間はカーボンブラック２ｗｔ％配合の反応型エポキシ系接着剤で充填硬化されてなる棒状レンズが２列配列のレンズアレイを用いた。このレンズアレイを６．８ｍｍ幅に通常のカッターで切断した後、レンズアレイの両端のレンズが露出した配列端面をそれぞれ粒度約３μｍの砥粒で荒研磨した後、その荒研磨面に光重合性透明樹脂をスプレイして塗布し、光重合硬化させるコーテイング処理を施した。得られたコーテイング処理面はおおむね平滑であったが、このレンズアレイの８１ｐ／ｍｍでのＭＴＦの測定による光学特性は、実施例１により表面処理されたレンズアレイに比べ約３％低いものであった。
(Comparative Example 1)
The resin optical transmission array is composed of a resin substrate, a black resin spacer, and a resin rod lens. The space between the substrate, the rod lens and the spacer is filled and cured with a reactive epoxy adhesive containing 2 wt% carbon black. A lens array having a two-row array of rod lenses was used. After this lens array is cut to a width of 6.8 mm with a normal cutter, the arrayed end faces where the lenses at both ends of the lens array are exposed are roughly polished with abrasive grains having a particle size of about 3 μm, respectively, and then photopolymerizable on the rough polished surface. A transparent resin was sprayed and applied, and a coating treatment for photopolymerization curing was performed. The obtained coated surface was generally smooth, but the optical properties of this lens array measured by MTF at 81 p / mm were about 3% lower than the lens array surface-treated according to Example 1. It was.
１ 光伝送体アレイ
２ 固定治具
３ 固定用クランプ
４ クランプ用エアシリンダー
５ 固定治具移動レール
６ 単結晶ダイヤモンド刃
７ 回転ヘッド
８ モータ
1
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| Application Number | Priority Date | Filing Date | Title |
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| JP2004377185A JP4009287B2 (en) | 2004-12-27 | 2004-12-27 | Manufacturing method of resin optical transmitter array |
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| JP2004377185A JP4009287B2 (en) | 2004-12-27 | 2004-12-27 | Manufacturing method of resin optical transmitter array |
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| JP33255295A Division JP3847825B2 (en) | 1995-11-29 | 1995-11-29 | Manufacturing method of optical transmitter array |
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| JP2005189861A JP2005189861A (en) | 2005-07-14 |
| JP4009287B2 true JP4009287B2 (en) | 2007-11-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458772A (en) * | 2019-01-22 | 2020-07-28 | 北京理工大学 | A kind of superhard material microlens array manufacturing device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458772A (en) * | 2019-01-22 | 2020-07-28 | 北京理工大学 | A kind of superhard material microlens array manufacturing device and method |
| CN111458772B (en) * | 2019-01-22 | 2021-04-27 | 北京理工大学 | Device and method for manufacturing micro-lens array of superhard material |
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| JP2005189861A (en) | 2005-07-14 |
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