JP2018122245A - 光照射装置 - Google Patents
光照射装置 Download PDFInfo
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- JP2018122245A JP2018122245A JP2017016371A JP2017016371A JP2018122245A JP 2018122245 A JP2018122245 A JP 2018122245A JP 2017016371 A JP2017016371 A JP 2017016371A JP 2017016371 A JP2017016371 A JP 2017016371A JP 2018122245 A JP2018122245 A JP 2018122245A
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- 230000005855 radiation Effects 0.000 title abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims description 84
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 abstract description 88
- 238000005452 bending Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 13
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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Abstract
【解決手段】第1の方向に沿って相対的に移動可能な照射対象物に対して光を照射する光照射装置が、第1の方向と第2の方向とによって規定される基板上に複数列に並んで配置され、照射対象物に対して、第3の方向から光を照射する複数の固体素子を有する光源と、第3の方向に対して、各固体素子から出射される光の広がり角を狭めると共に、各固体素子からの光をそれぞれ所定の角度で屈折させて出射する光学素子と、照射対象物よりも第3の方向下流側に配置された少なくとも2つの第1反射面を有し、光学素子から第1反射面に入射する光の一部を照射対象物に対して反射する第1反射部と、光学素子と第1反射部との間に配置された一対の第2反射面を有し、光学素子から第1反射面に対して光を導光する第2反射部と、を備える。
【選択図】図5
Description
MIN/MAX ≧ 50% ・・・(1)
図1は、本発明の第1の実施形態に係る光照射装置1の構成を説明する外観斜視図である。また、図2は、光照射装置1の分解斜視図である。本実施形態の光照射装置1は、線引きされた光ファイバFに塗布されたコーティング剤を硬化させる光源装置であり、一方向に移動する(走行する)光ファイバFに沿ってライン状の紫外光を出射する。なお、本明細書においては、図1の座標に示すように、光ファイバFの移動方向をX軸方向、後述するLED(Light Emitting Diode)素子115(固体素子)が紫外光を出射する方向をZ軸方向、ならびにX軸方向及びZ軸方向に直交する方向をY軸方向と定義して説明する。また、一般に、紫外光とは、波長400nm以下の光を意味するものとされているが、本明細書において、紫外光とは、コーティング剤を硬化させることが可能な波長(例えば、波長250〜420nm)の光を意味するものとする。
図8は、本発明の第2の実施形態に係る光照射装置1Aの構成を説明する断面図である。なお、図8においては、説明の便宜のため、ミラーフレーム320やヒートシンク120等を省略して示している。本実施形態の光照射装置1Aは、レンズ150A及び透光性パイプ200Aが細く構成されている点、並びにミラーモジュール300Aの第1反射部311Aに3つの第1反射面311Aa、311Ab、311Acが形成されている点で第1の実施形態の光照射装置1とは異なる。なお、本実施形態の光照射装置1Aも、第1の実施形態の光照射装置1と同様、光源ユニット100の第4反射部162、164の先端部からZ軸方向に起立し、光源ユニット100から出射される紫外光を第1反射部311Aの第1反射面311Aa、311Ab、311Acに導光する、一対の第2反射面312Aa、312Abから構成された第2反射部312Aを備えている。
MIN/MAX ≧ 50% ・・・(1)
100 光源ユニット
102 ケース
102a 前面パネル
102b 開口
110 LEDモジュール
113 基板
115、115a、115b、115c、115d、115e LED素子
120 ヒートシンク
122 ベースプレート
125 放熱フィン
132、134 第3反射部
132a、134a 反射面
150、150A レンズ
162、164 第4反射部
162a、164a 反射面
200、200A 透光性パイプ
300、300A ミラーモジュール
310 反射部材
311、311A 第1反射部
311a、311b、311c、311d、311e、311Aa、311Ab、311Ac 第1反射面
312、312A 第2反射部
312a、312b、312Aa、312Ab 第2反射面
320 ミラーフレーム
322 凹部
324 放熱フィン
330 冷却ファン
Claims (21)
- 第1の方向に沿って相対的に移動可能な照射対象物に対して光を照射する光照射装置であって、
前記第1の方向と前記第1の方向と直交する第2の方向によって規定される基板と、
前記基板上に前記第1の方向に沿って複数列に並んで配置され、前記照射対象物に対して、前記第1の方向及び前記第2の方向と直交する第3の方向から前記光を照射する複数の固体素子を有する光源と、
前記複数の固体素子の光路中に配置され、前記第3の方向に対して、前記各固体素子から出射される光の広がり角を狭めると共に、前記各固体素子からの光をそれぞれ所定の角度で屈折させて出射する光学素子と、
前記第1の方向から見たときに、前記照射対象物よりも前記第3の方向下流側に配置された少なくとも2つの第1反射面を有し、前記光学素子から前記第1反射面に入射する光の一部を前記照射対象物に対して反射する第1反射部と、
前記光学素子と前記第1反射部との間に配置された一対の第2反射面を有し、前記光学素子から前記第1反射面に対して前記光を導光する第2反射部と、
を備えることを特徴とする光照射装置。 - 前記第1の方向から見たときに、前記複数の固体素子から出射される前記光の主光線が、前記第1反射面に入射するか、又は前記第1反射面に入射せずに前記照射対象物に入射することを特徴とする請求項1に記載の光照射装置。
- 前記第1の方向から見たときに、前記光源の中央を通る垂線が前記光学素子の光軸と略一致することを特徴とする請求項1又は請求項2に記載の光照射装置。
- 前記複数の固体素子の前記第2の方向の間隔が、前記光源の中央から離れるに従って広くなることを特徴とする請求項3に記載の光照射装置。
- 前記光学素子が、前記第1の方向に延びるシリンドリカルレンズであることを特徴とする請求項1から請求項4のいずれか一項に記載の光照射装置。
- 前記複数の固体素子の光路を前記第2の方向から挟むように、前記光源と前記光学素子との間に配置され、前記光源から前記光学素子に対して前記光を導光する一対の第3反射部を備えることを特徴とする請求項1から請求項5のいずれか一項に記載の光照射装置。
- 前記一対の第3反射部が、前記第1の方向から見たときに、前記第3の方向に対して傾いており、前記一対の第3反射部の間隔が、前記光源から離れるに従って狭くなることを特徴とする請求項6に記載の光照射装置。
- 前記複数の固体素子の光路を前記第2の方向から挟むように、前記光学素子と前記第2反射部との間に配置される一対の第4反射部を備えることを特徴とする請求項1から請求項7のいずれか一項に記載の光照射装置。
- 前記一対の第4反射部が、前記第1の方向から見たときに、前記第3の方向に対して傾いており、前記一対の第4反射部の間隔が、前記光学素子から離れるに従って広くなることを特徴とする請求項8に記載の光照射装置。
- 前記第1反射面は、前記第1の方向から見たときに、前記光源の中央を通る垂線に対して線対称に配置されることを特徴とする請求項1から請求項9のいずれか一項に記載の光照射装置。
- 前記第1反射面は、平面であり、前記第1の方向から見たときに、前記第1反射面の垂直二等分線が前記光源の中央を通る垂線と交わるように配置されることを特徴とする請求項10に記載の光照射装置。
- 前記一対の第2反射面が、前記第1の方向から見たときに、前記第3の方向に対して傾いており、前記一対の第2反射面の間隔が、前記光源から離れるに従って狭くなることを特徴とする請求項1から請求項11のいずれか一項に記載の光照射装置。
- 前記照射対象物の外周面における前記光の最大強度をMAXとし、最小強度をMINとしたときに、以下の数式(1)を満たすことを特徴とする請求項1から請求項12のいずれか一項に記載の光照射装置。
MIN/MAX ≧ 50% ・・・(1) - 前記第1反射部及び前記第2反射部に熱的に接合され、前記第1反射部及び前記第2反射部を放熱する放熱部材を有することを特徴とする請求項1から請求項13のいずれか一項に記載の光照射装置。
- 前記放熱部材は、板状であり、前記放熱部材の一方面に前記第1反射部及び前記第2反射部を収容する収容部が形成されていることを特徴とする請求項14に記載の光照射装置。
- 前記放熱部材は、前記一方面と対向する他方面に複数の放熱フィンを有することを特徴とする請求項15に記載の光照射装置。
- 前記放熱フィンにエアを吹き付ける冷却ファンを備えることを特徴とする請求項16に記載の光照射装置。
- 前記照射対象物を覆うように前記第1の方向に延設され、前記光源からの前記光が透過する透光性パイプを更に備えることを特徴とする請求項1から請求項17のいずれか一項に記載の光照射装置。
- 前記光は、紫外線波長域の光であることを特徴とする請求項1から請求項18のいずれか一項に記載の光照射装置。
- 前記照射対象物は、線状、球状又は粒状の形状を呈し、前記紫外線波長域の光が前記照射対象物の外周面上に塗布されたコーティング剤を硬化させることを特徴とする請求項19に記載の光照射装置。
- 前記照射対象物は、液状であり、前記紫外線波長域の光が前記照射対象物を殺菌することを特徴とする請求項19に記載の光照射装置。
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