JP4350359B2

JP4350359B2 - Dental light irradiator

Info

Publication number: JP4350359B2
Application number: JP2002330861A
Authority: JP
Inventors: 通三山中; 喜章平柄
Original assignee: Yoshida Dental Mfg Co Ltd
Current assignee: Yoshida Dental Mfg Co Ltd
Priority date: 2002-11-14
Filing date: 2002-11-14
Publication date: 2009-10-21
Anticipated expiration: 2022-11-14
Also published as: JP2004159999A

Description

【０００１】
【発明の属する技術分野】
本発明は、歯の修復用光重合レジン等に光を照射する歯科用光照射器に関するものである。
【０００２】
【従来の技術】
従来、手持部材の先端に半導体発光素子である複数のＬＥＤペレットを配置して、このＬＥＤペレットから直接被照射物である歯の修復用光重合レジン等に光を照射するように構成した歯科用光照射器が提案されている（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特開２００２−１７７３０２号
【０００４】
【発明が解決しようとする課題】
しかしながら、特許文献１に開示された従来の歯科用光照射器の場合、複数のＬＥＤペレットからの光束は、半導体発光素子と被照射物との距離が近づくにつれて不均一性が大きくなる。
【０００５】
これは光束がある一定の広がり角を持って広がるためであり、ＬＥＤペレットから被照射物までの距離が充分でないと、被照射物に不均一な光作用を与えてしまう。この結果、被照射物が光重合レジンである場合は、不均一な重合を起こさせ結果的に強度的に弱いレジンを生成してしまう。また充分に重合されなかったレジン部位から生態環境に好ましくない影響を与える物質が溶出する可能性が指摘されている。
【０００６】
さらに重合度合いの違いからレジン内部に応力が発生して、強度的に弱いだけでなく、歯との接合部分に隙間が生じることにより、２次的にカリエスを生じさる可能性さえあった。また、被照射物が光反応型歯面漂白用材料である場合、不均一な光作用の結果、まだらに歯面漂白を行うことになり、審美性が著しく損なわれる場合も生じていた。
【０００７】
本発明は、上記事情に鑑みてなされたものであり、発光部と被照射物との距離の如何を問わず、光強度が均一となる光を被照射物に照射できる歯科用光照射器を提供することを目的とするものである。
【０００８】
【課題を解決するための手段】
請求項１記載の発明の歯科用光照射器は、手持部材の先端近傍に、被照射物に向けて光を出射する複数の発光層を持つ半導体発光素子ペレットからなる発光部を備え、前記発光部の前方位置に光学的拡散作用を持つ光学素子として発光部側から被照射物側に向かうに従ってその光路の有効径が大きくなっている光ロッドを備えることを特徴とするものである。
【０００９】
請求項１記載の発明によれば、発光部から照射された光束は、光学的な拡散作用を持つ光ロッドにより、被照射物側に伝わるに従い拡散することになり、発光部と被照射物の作用面との距離の如何を問わず、被照射物の作用面では均一性が高く歯科向けの光重合用として充分な光強度とすることができる。
【００１０】
請求項２記載の発明は、手持部材の先端近傍に、被照射物に向けて光を出射する複数の発光層を持つ半導体発光素子ペレットからなる発光部を備えた歯科用光照射器であって、前記発光部は、前記手持部材の一端外周に筒状保持部材を介して取り付けた略Ｌ状に曲げた手持部材カバーの先端側に取り付けられ、前記発光部の前方位置に、手持部材カバーにネジ結合により着脱可能に取り付けた筒状光学部材により一体に保持された内周面を鏡面とした筒状のテーパーミラースペーサ及び発光部からの光束の方向と直交する配置の光の拡散作用を有する光学素子である複数の微小レンズを列設した微小レンズ群を備えることを特徴とする。
【００１１】
請求項２記載の発明によれば、略Ｌ状に曲げた手持部材カバーの先端側に取り付けた発光部から出射され被照射物に向かう光束は、微小レンズ群により光強度の強い部分と弱い部分とが拡散され交じり合い均一化されるので、被照射物の作用面では歯科向けの光重合用として充分な均一性を持ちかつ充分な光強度とすることができる。
また、筒状光学部材は手持部材カバーから離脱させることができるので、微小レンズ群の滅菌処理を容易に行うことができ、さらに、テーパーミラースペーサにより周辺へ漏れる光を光路の中央部へ集めて中央部の光強度をより強めることができる。
【００１２】
請求項３記載の発明は、手持部材の先端近傍に、被照射物に向けて光を出射する複数の発光層を多層配置に持つ半導体発光素子ペレットからなる発光部を備えた歯科用光照射器であって、前記発光部の半導体発光素子ペレットは、前記手持部材の一端外周に筒状保持部材を介して取り付けた略Ｌ状に曲げた手持部材カバーの先端側に取り付けられ、前記発光部の前方位置に、手持部材カバーにネジ結合により着脱可能に取り付けた筒状光学部材により一体に保持された内周面を鏡面とした筒状のテーパーミラースペーサ及びアングルスペーサにより光路の中央方向を向く傾斜配置で保持された光の拡散作用を有する光学素子である複数の微小レンズを列設した微小レンズ群を備え、前記手持部材に一端を、前記発光部の裏面に他端を取り付けた放熱作用を発揮する略Ｌ状に曲げたヒートシンク部を前記手持部材カバー内に配置したことを特徴とする。
【００１３】
請求項３記載の発明によれば、請求項２記載の発明の場合と同様、略Ｌ状に曲げた手持部材カバーの先端側に取り付けた発光部から出射され被照射物に向かう光束は、アングルスペーサにより光路の中央方向を向く傾斜配置とした微小レンズ群により光強度の強い部分と弱い部分とが拡散され交じり合い均一化されるので、被照射物の作用面では歯科向けの光重合用として充分な均一性を持ちかつ充分な光強度とすることができる。また、放熱作用を発揮する略Ｌ状に曲げたヒートシンク部を備えることから、放熱対策も十分となる。
さらに、筒状光学部材は手持部材カバーから離脱させることができるので、微小レンズ群の滅菌処理を容易に行うことができ、さらに、テーパーミラースペーサにより周辺へ漏れる光を光路の中央部へ集めて中央部の光強度をより強めることができる。
【００１４】
請求項４の発明は、手持部材の先端近傍に、被照射物に向けて光を出射する複数の発光層を持つ半導体発光素子ペレットからなる発光部を備えた歯科用光照射器であって、前記発光部は、前記手持部材の一端外周に筒状保持部材を介して取り付けた略Ｌ状に曲げた手持部材カバーの先端側に取り付けられ、前記発光部の前方位置に、手持部材カバーの先端側に取り付けた筒状光学部材により保持された内周面を鏡面とした筒状のテーパーミラースペーサ及び光の拡散作用を発揮する光学素子としての凹レンズを備えることを特徴とする。
【００１５】
請求項４記載の発明によれば、前記発光部から出射される光や、発光部の周辺に配置されたテーパーミラースペーサの鏡面から反射した光の重なり合う部分を、前記凹レンズの光の拡散作用で光強度の強い部分を拡大して被照射物の作用面に照射することで、被照射物の作用面上に均一性を持ち歯科向けの光重合用として好適な光強度を得ることができる。
【００１６】
請求項５記載の発明は、手持部材の先端近傍に、被照射物に向けて光を出射する複数の発光層を多層配置に持つ半導体発光素子ペレットからなる発光部を備えた歯科用光照射器であって、前記発光部の半導体発光素子ペレットは、前記手持部材の一端外周に筒状保持部材を介して取り付けた略Ｌ状に曲げた手持部材カバーの先端側に各々光路の中央方向を向くようにアングルスペーサを介して傾斜配置に取り付けられ、前記発光部の前方位置に、手持部材カバーの先端側に取り付けた筒状光学部材により保持された内周面を鏡面とした筒状のテーパーミラースペーサ及び光の拡散作用を発揮する光学素子としての凹レンズを備えることを特徴とする。
【００１７】
請求項５記載の発明によれば、アングルスペーサを介して傾斜配置に取り付けられた発光部からの光と、その周辺に配置されたテーパーミラースペーサの鏡面から反射した光の重なり合う部分を、前記凹レンズの光の拡散作用で光強度の強い部分を拡大して被照射物の作用面に照射することができ、被照射物の作用面上に均一性を持ち歯科向けの光重合用として好適な光強度を得ることができる。
【００１８】
請求項６記載の発明は、手持部材の先端近傍に、被照射物に向けて光を出射する複数の発光層を多層配置に持つ半導体発光素子ペレットからなる発光部を備えた歯科用光照射器であって、前記発光部の半導体発光素子ペレットは、前記手持部材の一端外周に筒状保持部材を介して取り付けた略Ｌ状に曲げた手持部材カバーの先端側に各々光路の中央方向を向くようにアングルスペーサを介して傾斜配置に取り付けられ、前記発光部の前方位置に、手持部材カバーの先端側に取り付けた筒状光学部材により保持された内周面を鏡面とした筒状のテーパーミラースペーサ及び光の拡散作用を発揮する光学素子としての凹レンズを備え、前記手持部材に一端を、前記発光部の裏面に他端を取り付けた放熱作用を発揮する略Ｌ状に曲げたヒートシンク部を前記手持部材カバー内に配置したことを特徴とする。
【００１９】
請求項６記載の発明によれば、請求項５記載の発明と同様な効果を奏するとともに、放熱作用を発揮する略Ｌ状に曲げたヒートシンク部を備えることから、放熱対策も十分となる。
【００２０】
【発明の実施の形態】
以下に本発明の実施の形態を詳細に説明する。
【００２１】
（実施の形態１）
図１は本発明の実施の形態１の歯科用光照射器を示すものであり、この歯科用光照射器は、円筒状の基板保持部１０により保持される円形のペレット基板１及びこのペレット基板１上に配置した複数個（例えば５０個、図１では３個のみ図示している）の半導体発光素子であるＬＥＤペレット２により発光部を構成するとともに、ペレット基板１を介してＬＥＤペレット２に接続した通電用のリード線４、リード線４の外周を覆うリード線カバーを兼ねる空洞の手持部材５を備えている。この手持部材５は、基板保持部１０に対して、その一端外周に形成した雄ネジ５ａを基板保持部１０の内周に形成した雌ネジ１０ａに螺合することで一体的に取り付けている。
【００２２】
さらに、前記ＬＥＤペレット２からの光の出射側となる配置で前記基板保持部１０に基端２０ｂ側をＯリング３を介して装着した拡散作用を発揮する光学素子である略Ｌ状（又はく字状）に曲げた円棒状の光ロッド２０を備えている。
【００２３】
この光ロッド２０は、前記ＬＥＤペレット２が出射する光を拡散させ被照射物２２における作用面２１の光強度のむらを少なくし均一化する拡散作用を発揮するものである。前記光ロッド２０は、Ｏリング３を介して基板保持部１０により抜けないように保持されているが、滅菌等の際には簡単に着脱できるようになっている。
【００２４】
さらに、本実施の形態１の歯科用光照射器は、ペレット基板１上のＬＥＤペレット２を冷却するための空気を手持部材５内に入れる空気管１１、ＬＥＤペレット２の発熱により暖められた空気を基板保持部１０を経て外部に逃すための空気逃げ穴１２を備えている。
【００２５】
前記光ロッド２０は、ＬＥＤペレット２に近い基端２０ｂから作用面２１に向けて光を出射する出射端２０ａに至るに従い光路の有効径が増加する形状に形成している。即ち、基端２０ｂの径φ１、出射端２０ａの径φ２とするとき、φ１＜φ２としている。
【００２６】
本実施の形態１の歯科用光照射器によれば、複数のＬＥＤペレット２から照射された光束は、光学的な拡散作用を持つ光ロッド２０の基端２０ｂに入射し、この光ロッド２０内を伝達される光が被照射物２２側に伝わるに従い各々の光束が拡散する。
【００２７】
特に光ロッド２０は、発光部側から被照射物側に向かうに従ってその光路の有効径が大きくなっているので、光ロッド２０内での、光束は被照射物側に伝わるに従い、各々光束が交じり合うために光の拡散作用がより高まる。この結果、複数のＬＥＤペレット２から構成される発光部と被照射物２２の作用面２１との距離の如何を問わず、被照射物２２の作用面２１では均一性が高く歯科向けの光重合用として充分な光強度とすることができる。
【００２８】
（実施の形態２）
次に、図２を参照して本発明の実施の形態２について説明する。
【００２９】
図２に示す実施の形態２の歯科用光照射器における手持部材５の構造は、実施の形態１の場合と同様であるが、本実施の形態２においては基板保持部１０の替わりに、筒状保持部材３５を使用し、手持部材５の一端外周に形成した雄ネジ５ａを筒状保持部材３５の内周に形成した雌ネジ３５ａに螺合することで筒状保持部材３５を手持部材５に一体的に取り付けている。
【００３０】
筒状保持部材３５には、後述するリード線４の外周を覆う略Ｌ状に曲げた手持部材カバー３６が連結されている。この手持部材カバー３６の筒状保持部材３５側はＯリング３を介してこの筒状保持部材３５の先端側に着脱可能に取り付けられている。
【００３１】
複数のＬＥＤペレット２を搭載したペレット基板１は実施の形態１の場合と同様にして手持部材カバー３６の先端側に一体的に取り付けられている。この結果、複数のＬＥＤペレット２からなる発光部の光の照射方向は図２おいて真下に向く状態となっている。更に、手持部材カバー３６のペレット基板１の近傍位置には放熱用の空気逃げ穴３６ｂが形成されている。
【００３２】
さらに、本実施の形態２の歯科用光照射器においては、ペレット基板１の図２において下側の位置において、例えばガラス製の筒状光学部材３１を手持部材カバー３６に対する螺合により着脱可能に取り付けている。即ち、手持部材カバー３６の突出端の内周に形成した雌ネジ３６ａに対して、筒状光学部材３１の外周上部に形成した雄ネジ３１ａを螺合している。
【００３３】
前記筒状光学部材３１の内部には光の拡散作用を有する光学素子である複数の微小レンズを列設した微小レンズ群３２を前記ＬＥＤペレット２からの光束の方向と直交する配置で一体に備えている。尚、微小レンズ群３２は、筒状光学部材３１の筒部と別体で形成し、接着等により筒状光学部材３１と一体化する構成も可能である。
【００３４】
さらに、被照射物２２の作用面２１から微小レンズ群３２までの距離を一定以上に保持できるように、筒状光学部材３１の先端部の形状は微小レンズ群３２の列設面よりもわずかに外方に突出した突出筒部３１ｂとしている。
【００３５】
本実施の形態２の歯科用光照射器によれば、前記ＬＥＤペレット２から出射され被照射物２２に向かう光束は、微小レンズ群３２により光強度の強い部分と弱い部分とが拡散され交じり合い均一化されるので、被照射物２２の作用面２１では歯科向けの光重合用として充分な均一性を持ちかつ充分な光強度とすることができる。
【００３６】
また、前記手持部材カバー３６は、前記筒状保持部材３５に対して着脱可能でり、また、筒状光学部材３１は手持部材カバー３６から離脱させることができるので、微小レンズ群３２の滅菌処理を容易に行うことができる。
【００３７】
（実施の形態３）
次に、図３を参照して本発明の実施の形態３について説明する。
【００３８】
図３に示す実施の形態３の歯科用光照射器は、実施の形態２の歯科用光照射器と基本的な構成は同様であり、同一要素には同一符号を付して示す。
【００３９】
本実施の形態３の歯科用光照射器においては、前記複数のＬＥＤペレット２の替わりに、複数の発光層を多層配置に持つ半導体発光素子ペレットであるＬＥＤペレット２Ａをスペーサ４２を介してペレット基板１上に複数個搭載したことが特徴である。ＬＥＤペレット２Ａは、前記ＬＥＤペレット２に比べ、直径で３倍程度の大きさを有し、この結果、ペレット基板１上には例えばＬＥＤペレット２Ａは４個程度（図３に示す例では２個のみ図示）配置される。
また、本実施の形態３の歯科用光照射器においては、例えばアルミニウム、銅等の金属からなる放熱作用を発揮する略Ｌ状に曲げたヒートシンク部３３の一端を前記手持部材５に取り付け、ヒートシンク部３３の他端側を前記ペレット基板１の裏面（ＬＥＤペレット２Ａの搭載面とは反対側の面）に接合している。尚、本実施の形態３においてはリード線は図示省略している。
【００４０】
本実施の形態３の歯科用光照射器によれば、前記ＬＥＤペレット２Ａから出射され被照射物２２に向かう光束は、実施の形態２の場合と同様微小レンズ群３２により光強度の強い部分と弱い部分とが拡散され交じり合い均一化されるので、被照射物２２の作用面２１では歯科向けの光重合用として充分な均一性を持ちかつ充分な光強度とすることができる。また本実施の形態３の歯科用光照射器においては、複数の発光層を多層配置に持つＬＥＤペレット２Ａを用いているので、実施の形態２の場合と比べ被照射物２２の作用面２１では歯科向けの光重合用として充分な均一性を持ちかつより光強度を高めることができる。
【００４１】
また、前記手持部材カバー３６は、前記筒状保持部材３５に対して着脱可能でり、また、筒状光学部材３１は手持部材カバー３６から離脱させることができるので、微小レンズ群３２の滅菌処理を容易に行うことができることは実施の形態２の場合と同様である。
【００４２】
（実施の形態４）
次に、図４を参照して本発明の実施の形態４について説明する。
【００４３】
図４に示す実施の形態４の歯科用光照射器は、実施の形態２の歯科用光照射器と基本的な構成は同様であるが、前記筒状光学部材３１の替わりに、内周面を鏡面とした筒状のテーパーミラースペーサ５１を内装するとともに、ＬＥＤペレット２からの光束に対して光の拡散作用を発揮する光学素子としての凹レンズ５３をＬＥＤペレット２の前方配置となる形状の光学部材５２を手持部材カバー３６にネジ結合により連結したことが特徴である。
【００４４】
本実施の形態４の歯科用光照射器によれば、複数のＬＥＤペレット２から出射される光や、ＬＥＤペレット２の周辺に配置されたテーパーミラースペーサ５１の鏡面から反射した光の重なり合う部分を、前記凹レンズ５３の光の拡散作用で光強度の強い部分を拡大して被照射物２２の作用面２１に照射することで、被照射物２２の作用面２１上に均一性を持ち歯科向けの光重合用として好適な光強度を得ることができる。
【００４５】
（実施の形態５）
次に、図５を参照して本発明の実施の形態５について説明する。図５に示す実施の形態５の歯科用光照射器は、実施の形態４の歯科用光照射器と基本的な構成は同様であるが、本実施の形態５においては、前記ＬＥＤペレット２の替わりに、実施の形態３と同様な複数の発光層を多層配置に持つ半導体発光素子ペレットである３個のＬＥＤペレット２Ａを各々光路の中央方向を向くようにアングルスペーサ６１を介してペレット基板１上に傾斜配置でかつ図６に示すように例えば１２０度対称配置で搭載したことが特徴である。
【００４６】
３個構成のＬＥＤペレット２Ａは、各々アングルスペーサ６１により光路の中央部に向けて光を出射するように傾斜配置となっている。また、前記テーパーミラースペーサ５１はＬＥＤペレット２Ａから周辺へ漏れる光を光路の中央部へ集めてさらに中央部の光強度を強める作用を発揮する。
【００４７】
本実施の形態５の歯科用光照射器によれば、複数（例えば３個）のＬＥＤペレット２Ａから出射される光や、ＬＥＤペレット２Ａの周辺に配置されたテーパーミラースペーサ５１の鏡面から反射した光の重なり合う部分は若し凹レンズ５３が無ければ図７に示すように重なり合い、光強度のむら（例えば光束が３重に重なるエリアを１００％とすると、光束が２重に重なるエリアでは８０％、光束が重にならないエリアでは６０％）が生じるが、本実施の形態５においては、例えば図７の１００％エリアに相当する光束のみを前記凹レンズ５３の拡散作用で拡大して図７にハッチングを付して示すような光強度の強い１００％エリアを作用面２１上に得ることができる。
【００４８】
（実施の形態６）
次に、図８を参照して本発明の実施の形態６について説明する。図８に示す実施の形態６の歯科用光照射器は、実施の形態５の歯科用光照射器と基本的な構成は同様であるが、本実施の形態６においては、図３に示す実施の形態３の場合と同様な構造のヒートシンク部３３を用いていることが特徴である。尚、本実施の形態６においてはリード線は図示省略している。本実施の形態６によれば、実施の形態５の歯科用光照射器と同様な作用効果を発揮させることができる。
【００４９】
実施の形態５、６において、前記凹レンズ５３の替わりに、図示していないがオパール光拡散ガラスを使用しても良い。オパール光拡散ガラスは、ガラス面の片側にオパールの薄い層を施したものであり、すりガラス等よりも拡散作用が大きくより均質な光強度が得られる。
【００５０】
以上説明した実施の形態１，２，４においては、ＬＥＤペレット２の替わりに実施の形態３の複数の発光層を持つＬＥＤペレット２Ａを用いる構成も可能であり、この場合には作用面２１上に歯科向けの光重合用として充分な均一性を持ちかつより充分な光強度を得ることができる。
【００５１】
また、前記発光部としてはＬＥＤペレット２又はＬＥＤペレット２Ａに替えてＬＤ（レーザダイオード）ペレットを使用することもできる。ＬＤペレットの場合はレーザ光の広がり角はＬＥＤペレット２又はＬＥＤペレット２Ａからの光に比べて極めて小さいために均一に照射する効果はより大きいと言える。
【００５２】
【発明の効果】
請求項１記載の発明によれば、発光部から照射された光束は、光学的な拡散作用を持つ光ロッドにより、被照射物側に伝わるに従い拡散することになり、発光部と被照射物の作用面との距離の如何を問わず、被照射物の作用面では均一性が高く歯科向けの光重合用として充分な光強度とすることができる歯科用光照射器を提供することができる。
【００５３】
請求項２記載の発明によれば、略Ｌ状に曲げた手持部材カバーの先端側に取り付けた発光部から出射され被照射物に向かう光束は、微小レンズ群により光強度の強い部分と弱い部分とが拡散され交じり合い均一化されるので、被照射物の作用面では歯科向けの光重合用として充分な均一性を持ちかつ充分な光強度とすることができ、微小レンズ群の滅菌処理を容易に行うこともでき、光路の中央部の光強度をより強めることができる歯科用光照射器を提供することができる。
【００５４】
請求項３記載の発明によれば、請求項２記載の発明の場合と同様、略Ｌ状に曲げた手持部材カバーの先端側に取り付けた発光部から出射され被照射物に向かう光束は、微小レンズ群により光強度の強い部分と弱い部分とが拡散され交じり合い均一化されるので、被照射物の作用面では歯科向けの光重合用として充分な均一性を持ちかつ充分な光強度とすることができ、微小レンズ群の滅菌処理を容易に行うこともでき、光路の中央部の光強度をより強めることもでき、さらに、放熱作用を発揮する略Ｌ状に曲げたヒートシンク部を備えることから、放熱対策も十分となる歯科用光照射器を提供することができる。
【００５５】
請求項４記載の発明によれば、前記発光部から出射される光や、発光部の周辺に配置されたテーパーミラースペーサの鏡面から反射した光の重なり合う部分を、前記凹レンズの光の拡散作用で光強度の強い部分を拡大して被照射物の作用面に照射することで、被照射物の作用面上に均一性を持ち歯科向けの光重合用として好適な光強度を得ることができる歯科用光照射器を提供することができる。
【００５６】
請求項５記載の発明によれば、アングルスペーサを介して傾斜配置に取り付けられた発光部からの光と、その周辺に配置されたテーパーミラースペーサの鏡面から反射した光の重なり合う部分を、前記凹レンズの光の拡散作用で光強度の強い部分を拡大して被照射物の作用面に照射することができ、被照射物の作用面上に均一性を持ち歯科向けの光重合用として好適な光強度を得ることができる歯科用光照射器を提供することができる。
【００５７】
請求項６記載の発明によれば、請求項５記載の発明と同様な効果を奏するとともに、放熱作用を発揮する略Ｌ状に曲げたヒートシンク部を備えることから、放熱対策も十分となる歯科用光照射器を提供することができる。
【図面の簡単な説明】
【図１】本発明の実施の形態１の歯科用光照射器の構成を示す概略部分断面図である。
【図２】本発明の実施の形態２の歯科用光照射器の構成を示す概略部分断面図である。
【図３】本発明の実施の形態３の歯科用光照射器の構成を示す概略部分断面図である。
【図４】本発明の実施の形態４の歯科用光照射器の構成を示す概略部分断面図である。
【図５】本発明の実施の形態５の歯科用光照射器の構成を示す概略部分断面図である。
【図６】本発明の実施の形態５の歯科用光照射器のＬＥＤペレットの配置を示す平面図である。
【図７】本実施の形態５の歯科用光照射器における被照射物の作用面上で照射状態を示す説明図である。
【図８】本発明の実施の形態６の歯科用光照射器の構成を示す概略部分断面図である。
【符号の説明】
１ペレット基板
２ＬＥＤペレット
２ＡＬＥＤペレット
３Ｏリング
４リード線
５手持部材
１０基板保持部
１１空気管
１２空気逃げ穴
２０光ロッド
２０ａ出射端
２０ｂ基端
２１作用面
２２被照射物
３１筒状光学部材
３１ｂ突出筒部
３２微小レンズ群
３３ヒートシンク部
３５筒状保持部材
３６手持部材カバー
３６ｂ空気逃げ穴
４２スペーサ
５１テーパーミラースペーサ
５２光学部材
５３凹レンズ
６１アングルスペーサ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dental light irradiator for irradiating light to a photopolymerization resin or the like for tooth restoration.
[0002]
[Prior art]
Conventionally, a plurality of LED pellets, which are semiconductor light emitting elements, are arranged at the tip of a hand-held member, and are configured to irradiate light directly from this LED pellet to a photopolymerization resin for restoration of a tooth, which is an irradiated object. A light irradiator has been proposed (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP 2002-177302 A
[Problems to be solved by the invention]
However, in the case of the conventional dental light irradiator disclosed in Patent Document 1, the non-uniformity of the light flux from the plurality of LED pellets increases as the distance between the semiconductor light emitting element and the irradiated object approaches.
[0005]
This is because the luminous flux spreads with a certain spread angle, and if the distance from the LED pellet to the irradiated object is not sufficient, the irradiated object will have a non-uniform light action. As a result, when the irradiated object is a photopolymerization resin, non-uniform polymerization is caused, resulting in a weak resin. In addition, it has been pointed out that a substance that adversely affects the ecological environment may be eluted from a resin site that has not been sufficiently polymerized.
[0006]
Furthermore, due to the difference in the degree of polymerization, stress is generated inside the resin, which is not only weak in strength, but also has a possibility of causing secondary caries due to a gap at the joint with the tooth. Further, when the object to be irradiated is a photoreactive type tooth surface bleaching material, the uneven surface of the tooth surface is bleached as a result of uneven light action, and the aesthetics may be significantly impaired.
[0007]
The present invention has been made in view of the above circumstances, and provides a dental light irradiator capable of irradiating an irradiated object with light having a uniform light intensity regardless of the distance between the light emitting portion and the irradiated object. It is intended to provide.
[0008]
[Means for Solving the Problems]
The dental light irradiator according to the first aspect of the present invention is provided with a light-emitting portion made of a semiconductor light-emitting element pellet having a plurality of light-emitting layers that emit light toward an object to be irradiated, in the vicinity of the tip of the hand-held member. As an optical element having an optical diffusing action, an optical rod having an effective diameter of an optical path that increases from the light emitting unit side toward the irradiated object side is provided at the front position of the unit .
[0009]
According to the first aspect of the invention, the light beam emitted from the light emission portion, the light rod having an optical diffusion effect, will be spread in accordance transmitted to the irradiated object side, the light emitting portion and an irradiated object Regardless of the distance to the working surface, the working surface of the irradiated object has high uniformity and can have a sufficient light intensity for photopolymerization for dentistry .
[0010]
The invention according to claim 2 is a dental light irradiator provided with a light emitting portion made of a semiconductor light emitting element pellet having a plurality of light emitting layers emitting light toward an irradiated object in the vicinity of the tip of the hand-held member. , the light emitting portion, the hand member to one end periphery via a tubular retaining member mounted on the distal end side of the hand member cover bent into a substantially L shape mounted in, in front of the light emitting portion, the hand member cover A cylindrical taper mirror spacer having an inner peripheral surface integrally held by a cylindrical optical member that is detachably attached by screw connection and a light diffusing action arranged perpendicular to the direction of the light beam from the light emitting portion A microlens group in which a plurality of microlenses that are optical elements are arranged is provided.
[0011]
According to the second aspect of the present invention, the light beam emitted from the light emitting portion attached to the front end side of the hand-held member cover bent in a substantially L shape and directed toward the irradiated object is a portion having a strong light intensity and a weak portion by the micro lens group. Are diffused and mixed to be uniform, so that the working surface of the irradiated object has sufficient uniformity and sufficient light intensity for photopolymerization for dentistry.
In addition, since the cylindrical optical member can be detached from the handheld member cover, the microlens group can be easily sterilized, and light leaking to the periphery by the tapered mirror spacer is collected at the center of the optical path. The light intensity at the center can be further increased.
[0012]
According to a third aspect of the present invention, there is provided a dental light irradiator provided with a light emitting portion comprising a semiconductor light emitting element pellet having a plurality of light emitting layers emitting light toward an irradiated object in a multilayer arrangement in the vicinity of the tip of the hand-held member. The semiconductor light emitting element pellet of the light emitting part is attached to the front end side of a hand holding member cover bent in a substantially L shape attached to the outer periphery of one end of the hand holding member via a cylindrical holding member, Inclined toward the center of the optical path by a cylindrical tapered mirror spacer and angle spacer with the inner peripheral surface held integrally by a cylindrical optical member detachably attached to the handheld member cover by screw connection at the front position having a fine lens group that has been arrayed a plurality of micro lenses is an optical element having a diffusion action of light held in place, at one end thereof to said hand member, attaching the other end to the rear surface of the light emitting portion A heat sink portion which is bent into a substantially L shape to exert a heat radiation effect, characterized in that arranged on the hand member within the cover.
[0013]
According to the invention of claim 3, wherein when the same luminous flux toward the object to be irradiated is emitted from a light emitting unit mounted on the distal end side of the hand member cover bent into a substantially L-shaped second aspect of the invention, the angle The microlens group with the inclined arrangement facing the center of the optical path by the spacer diffuses and mixes the strong and weak parts of the light intensity, so that the working surface of the irradiated object is used for photopolymerization for dentistry. It has sufficient uniformity and sufficient light intensity. Moreover, since the heat sink part bent in the substantially L shape which exhibits a heat radiation effect is provided, a heat radiation measure is sufficient.
Further, since the cylindrical optical member can be detached from the hand-held member cover, the micro lens group can be easily sterilized, and further, the light leaking to the periphery is collected by the tapered mirror spacer to the central portion of the optical path. The light intensity at the center can be further increased.
[0014]
The invention of claim 4 is a dental light irradiator provided with a light emitting part made of a semiconductor light emitting element pellet having a plurality of light emitting layers emitting light toward an irradiated object in the vicinity of the tip of the hand-held member, The light emitting part is attached to the front end side of a hand holding member cover bent in a substantially L shape attached to the outer periphery of one end of the hand holding member via a cylindrical holding member, and the front end of the hand holding member cover is positioned in front of the light emitting part. A cylindrical taper mirror spacer having an inner peripheral surface held by a cylindrical optical member attached to the side as a mirror surface and a concave lens as an optical element exhibiting a light diffusing action are provided .
[0015]
According to the fourth aspect of the present invention, the overlapping portion of the light emitted from the light emitting portion and the light reflected from the mirror surface of the tapered mirror spacer disposed around the light emitting portion is caused by the light diffusion action of the concave lens. By magnifying a portion having a high light intensity and irradiating the working surface of the irradiated object, it is possible to obtain light intensity suitable for dental photopolymerization having uniformity on the working surface of the irradiated object.
[0016]
According to a fifth aspect of the present invention , there is provided a dental light irradiator provided with a light emitting portion comprising a semiconductor light emitting element pellet having a plurality of light emitting layers emitting light toward an irradiated object in a multilayer arrangement in the vicinity of the tip of the hand-held member. The semiconductor light-emitting element pellets of the light-emitting portion respectively face the center direction of the optical path toward the distal end side of a substantially L-shaped hand-held member cover attached to the outer periphery of one end of the hand-held member via a cylindrical holding member. A cylindrical taper mirror having an inner peripheral surface as a mirror surface that is attached to the front side of the light emitting unit and held by a cylindrical optical member attached to the front end side of the handheld member cover. It comprises a concave lens as an optical element that exhibits a spacer and a light diffusing action .
[0017]
According to the fifth aspect of the present invention, a portion where the light from the light emitting portion attached in an inclined arrangement via the angle spacer and the light reflected from the mirror surface of the tapered mirror spacer arranged in the periphery overlaps the concave lens. The light-diffusing action can be used to magnify a portion with high light intensity to irradiate the work surface of the irradiated object, and the light is suitable for dental photopolymerization with uniformity on the work surface of the irradiated object. Strength can be obtained.
[0018]
According to a sixth aspect of the present invention , there is provided a dental light irradiator provided with a light emitting portion made of a semiconductor light emitting element pellet having a plurality of light emitting layers emitting light toward an irradiated object in a multilayer arrangement in the vicinity of the tip of the hand-held member. The semiconductor light-emitting element pellets of the light-emitting portion respectively face the center direction of the optical path toward the distal end side of a substantially L-shaped hand-held member cover attached to the outer periphery of one end of the hand-held member via a cylindrical holding member. A cylindrical taper mirror having an inner peripheral surface as a mirror surface that is attached to the front side of the light emitting unit and held by a cylindrical optical member attached to the front end side of the handheld member cover. A heat sink comprising a spacer and a concave lens as an optical element that exhibits a light diffusing action, and having one end attached to the hand-held member and the other end attached to the back surface of the light-emitting portion and bent into a substantially L shape The is characterized in that arranged on the hand member within the cover.
[0019]
According to the sixth aspect of the invention, the same effect as that of the fifth aspect of the invention can be obtained, and since the heat sink portion bent in a substantially L shape that exhibits the heat radiation action is provided, the heat radiation countermeasure is sufficient.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0021]
(Embodiment 1)
FIG. 1 shows a dental light irradiator according to Embodiment 1 of the present invention. This dental light irradiator includes a circular pellet substrate 1 held by a cylindrical substrate holder 10 and the pellet substrate. The LED pellet 2 which is a plurality of semiconductor light emitting elements (for example, 50, only three are shown in FIG. 1) arranged on 1 constitutes a light emitting part, and is formed on the LED pellet 2 via the pellet substrate 1. A connected lead wire 4 for energization and a hollow hand-held member 5 that also serves as a lead wire cover that covers the outer periphery of the lead wire 4 are provided. The hand-held member 5 is integrally attached to the substrate holding portion 10 by screwing a male screw 5a formed on the outer periphery of one end thereof with a female screw 10a formed on the inner periphery of the substrate holding portion 10.
[0022]
Further, in an arrangement on the emission side of the light from the LED pellet 2, a substantially L-shaped optical element that exhibits a diffusing action in which the base end 20 b side is attached to the substrate holding part 10 via the O-ring 3 (or A rod-shaped optical rod 20 bent in a letter shape is provided.
[0023]
The light rod 20 exhibits a diffusing action of diffusing the light emitted from the LED pellet 2 to reduce the unevenness of the light intensity of the working surface 21 of the irradiated object 22 and make it uniform. The optical rod 20 is held by the substrate holding part 10 through the O-ring 3 so as not to come off, but can be easily attached and detached during sterilization or the like.
[0024]
Furthermore, in the dental light irradiator of the first embodiment, the air tube 11 that puts air for cooling the LED pellet 2 on the pellet substrate 1 into the holding member 5 and the air heated by the heat generated by the LED pellet 2. Is provided with an air escape hole 12 for allowing the air to escape to the outside through the substrate holding part 10.
[0025]
The optical rod 20 is formed in a shape in which the effective diameter of the optical path increases from the proximal end 20b close to the LED pellet 2 to the emitting end 20a that emits light toward the working surface 21. That is, when the diameter φ1 of the base end 20b and the diameter φ2 of the emission end 20a are set, φ1 <φ2.
[0026]
According to the dental light irradiator of the first embodiment, the light beam irradiated from the plurality of LED pellets 2 is incident on the base end 20b of the optical rod 20 having an optical diffusing action. Each light beam diffuses as the light transmitted through is transmitted to the irradiated object 22 side.
[0027]
In particular, since the effective diameter of the optical path of the optical rod 20 increases from the light emitting unit side toward the irradiated object side, the light beams in the optical rod 20 are mixed as they travel to the irradiated object side. In order to match, the light diffusing action is further enhanced. As a result, regardless of the distance between the light emitting portion composed of the plurality of LED pellets 2 and the working surface 21 of the irradiated object 22, the working surface 21 of the irradiated object 22 has high uniformity and photopolymerization for dentistry. The light intensity can be sufficient for use.
[0028]
(Embodiment 2)
Next, a second embodiment of the present invention will be described with reference to FIG.
[0029]
The structure of the hand-held member 5 in the dental light irradiator of the second embodiment shown in FIG. 2 is the same as that of the first embodiment, but in the second embodiment, a tube is used instead of the substrate holder 10. The cylindrical holding member 35 is screwed into a female screw 35 a formed on the inner periphery of the cylindrical holding member 35 by using the cylindrical holding member 35, and the male screw 5 a formed on the outer periphery of the one end of the hand holding member 5. It is attached to the unit.
[0030]
The cylindrical holding member 35 is connected to a hand holding member cover 36 that is bent in a substantially L shape and covers the outer periphery of the lead wire 4 described later. The cylindrical holding member 35 side of the handheld member cover 36 is detachably attached to the distal end side of the cylindrical holding member 35 via the O-ring 3.
[0031]
The pellet substrate 1 on which the plurality of LED pellets 2 are mounted is integrally attached to the front end side of the hand-held member cover 36 in the same manner as in the first embodiment. As a result, the light irradiation direction of the light emitting unit composed of the plurality of LED pellets 2 is in a state of being directly below in FIG. Further, a heat release air escape hole 36 b is formed in the vicinity of the pellet substrate 1 of the hand-held member cover 36.
[0032]
Further, in the dental light irradiator according to the second embodiment, the cylindrical optical member 31 made of, for example, glass can be detachably attached to the hand-held member cover 36 at a position below the pellet substrate 1 in FIG. It is attached. That is, the male screw 31 a formed on the outer periphery of the cylindrical optical member 31 is screwed into the female screw 36 a formed on the inner periphery of the protruding end of the hand-held member cover 36.
[0033]
The cylindrical optical member 31 is integrally provided with a micro lens group 32 in which a plurality of micro lenses, which are optical elements having a light diffusing action, are arranged in a row perpendicular to the direction of the light flux from the LED pellet 2. ing. The micro lens group 32 may be formed separately from the cylindrical portion of the cylindrical optical member 31 and integrated with the cylindrical optical member 31 by bonding or the like.
[0034]
Further, the shape of the tip of the cylindrical optical member 31 is slightly larger than the arrangement surface of the microlens groups 32 so that the distance from the working surface 21 of the irradiated object 22 to the microlens groups 32 can be maintained above a certain value. The protruding cylindrical portion 31b protrudes outward.
[0035]
According to the dental light irradiator of the second embodiment, the light beam emitted from the LED pellet 2 and directed toward the irradiation object 22 is diffused by the minute lens group 32 in which the strong and weak portions are diffused. Since it is made uniform, the working surface 21 of the irradiated object 22 has sufficient uniformity and sufficient light intensity for dental photopolymerization.
[0036]
The hand-held member cover 36 can be attached to and detached from the cylindrical holding member 35, and the cylindrical optical member 31 can be detached from the hand-held member cover 36. Can be easily performed.
[0037]
(Embodiment 3)
Next, Embodiment 3 of the present invention will be described with reference to FIG.
[0038]
The dental light irradiator of the third embodiment shown in FIG. 3 has the same basic configuration as the dental light irradiator of the second embodiment, and the same elements are denoted by the same reference numerals.
[0039]
In the dental light irradiator according to the third embodiment, instead of the plurality of LED pellets 2, LED pellets 2 </ b> A, which are semiconductor light-emitting element pellets having a plurality of light-emitting layers in a multilayer arrangement, are placed on a pellet substrate via spacers 42. A feature is that a plurality are mounted on one. The LED pellet 2A has a diameter about three times that of the LED pellet 2, and as a result, there are about four LED pellets 2A on the pellet substrate 1 (two in the example shown in FIG. 3). Only shown).
Further, in the dental light irradiator of the third embodiment, one end of a heat sink portion 33 bent into a substantially L shape that exhibits a heat dissipation action made of a metal such as aluminum or copper is attached to the hand-held member 5, and the heat sink The other end side of the portion 33 is joined to the back surface of the pellet substrate 1 (the surface opposite to the mounting surface of the LED pellet 2A). In the third embodiment, the lead wires are not shown.
[0040]
According to the dental light irradiator of the third embodiment, the light beam emitted from the LED pellet 2A and directed to the irradiation object 22 is a portion having a high light intensity by the micro lens group 32 as in the second embodiment. Since the weak portion is diffused and mixed and uniformed, the working surface 21 of the irradiated object 22 has sufficient uniformity and sufficient light intensity for photopolymerization for dentistry. Further, in the dental light irradiator of the third embodiment, since the LED pellet 2A having a plurality of light emitting layers in a multilayer arrangement is used, the working surface 21 of the irradiated object 22 is compared with the case of the second embodiment. It has sufficient uniformity for photopolymerization for dentistry and can further increase the light intensity.
[0041]
The hand-held member cover 36 can be attached to and detached from the cylindrical holding member 35, and the cylindrical optical member 31 can be detached from the hand-held member cover 36. As in the case of the second embodiment, it can be easily performed.
[0042]
(Embodiment 4)
Next, a fourth embodiment of the present invention will be described with reference to FIG.
[0043]
The dental light irradiator of the fourth embodiment shown in FIG. 4 has the same basic configuration as the dental light irradiator of the second embodiment, but instead of the cylindrical optical member 31, an inner peripheral surface A cylindrical taper mirror spacer 51 having a mirror surface as a mirror and a concave lens 53 as an optical element that exhibits a light diffusing action with respect to the light flux from the LED pellet 2 is formed in an optical configuration in the front of the LED pellet 2. The member 52 is connected to the hand-held member cover 36 by screw connection.
[0044]
According to the dental light irradiator of the fourth embodiment, the overlapping part of the light emitted from the plurality of LED pellets 2 and the light reflected from the mirror surface of the tapered mirror spacer 51 arranged around the LED pellet 2 is obtained. By magnifying a portion with high light intensity by the light diffusion action of the concave lens 53 and irradiating the work surface 21 of the irradiated object 22, the work surface 21 of the irradiated object 22 has uniformity on the working surface 21. Light intensity suitable for photopolymerization can be obtained.
[0045]
(Embodiment 5)
Next, a fifth embodiment of the present invention will be described with reference to FIG. The basic configuration of the dental light irradiator according to the fifth embodiment shown in FIG. 5 is the same as that of the dental light irradiator according to the fourth embodiment. Instead, the three LED pellets 2A, which are semiconductor light-emitting element pellets having a plurality of light-emitting layers similar to those in the third embodiment, are arranged on the pellet substrate 1 via the angle spacers 61 so as to face the central direction of the optical path. It is characterized by being mounted in a slanted arrangement on top and in a 120-degree symmetrical arrangement as shown in FIG.
[0046]
The three LED pellets 2 </ b> A are inclined so as to emit light toward the center of the optical path by the angle spacers 61. Further, the tapered mirror spacer 51 collects the light leaking from the LED pellet 2A to the periphery to the central portion of the optical path and further enhances the light intensity at the central portion.
[0047]
According to the dental light irradiator of the fifth embodiment, the light emitted from a plurality of (for example, three) LED pellets 2A or the mirror surface of the tapered mirror spacer 51 disposed around the LED pellets 2A is reflected. If there is no concave lens 53, the overlapping portion of the light overlaps as shown in FIG. 7, and the light intensity is uneven (for example, assuming that the area where the light beams are tripled is 100%, the light beam is 80% in the area where the light beams are doubled) In the fifth embodiment, for example, only the luminous flux corresponding to the 100% area in FIG. 7 is enlarged by the diffusion action of the concave lens 53, and hatching is applied to FIG. As shown, a 100% area having a high light intensity can be obtained on the working surface 21.
[0048]
(Embodiment 6)
Next, a sixth embodiment of the present invention will be described with reference to FIG. The basic configuration of the dental light irradiator of the sixth embodiment shown in FIG. 8 is the same as that of the dental light irradiator of the fifth embodiment. However, in the sixth embodiment, the embodiment shown in FIG. A feature is that the heat sink portion 33 having the same structure as that of the third embodiment is used. In the sixth embodiment, the lead wires are not shown. According to the sixth embodiment, the same function and effect as the dental light irradiator of the fifth embodiment can be exhibited.
[0049]
In the fifth and sixth embodiments, an opal light diffusing glass (not shown) may be used instead of the concave lens 53. The opal light diffusing glass has a thin layer of opal on one side of the glass surface, and has a diffusing action larger than that of ground glass and the like, and a more uniform light intensity can be obtained.
[0050]
In Embodiment 1, 2, and 4 demonstrated above, the structure which uses LED pellet 2A with several light emitting layers of Embodiment 3 instead of LED pellet 2 is also possible, In this case, on the working surface 21 Furthermore, it has sufficient uniformity for dental photopolymerization and can provide a sufficient light intensity.
[0051]
Further, as the light emitting portion, an LD (laser diode) pellet can be used instead of the LED pellet 2 or the LED pellet 2A. In the case of the LD pellet, the spread angle of the laser beam is extremely small compared to the light from the LED pellet 2 or the LED pellet 2A.
[0052]
【The invention's effect】
According to invention of Claim 1, the light beam irradiated from the light emission part will be spread | diffused as it propagates to the to-be-irradiated object side with the optical rod with an optical diffusion effect | action, and a light-emitting part and the to-be-irradiated object It is possible to provide a dental light irradiator that has high uniformity on the working surface of an object to be irradiated and can have a sufficient light intensity for photopolymerization for dental use regardless of the distance from the working surface .
[0053]
According to the second aspect of the present invention, the light beam emitted from the light emitting portion attached to the front end side of the hand-held member cover bent in a substantially L shape and directed toward the irradiated object is a portion having a strong light intensity and a weak portion by the micro lens group. Are diffused and mixed to make uniform, so that the working surface of the irradiated object has sufficient uniformity and sufficient light intensity for dental photopolymerization, and sterilization of the micro lens group It is possible to provide a dental light irradiator that can be easily performed and can further increase the light intensity at the center of the optical path .
[0054]
According to the invention described in claim 3, as in the case of the invention described in claim 2, the luminous flux emitted from the light emitting portion attached to the front end side of the hand-held member cover bent in a substantially L shape and directed toward the irradiated object is minute. The lens group diffuses and mixes the strong and weak parts of the light intensity and makes it uniform so that the working surface of the irradiated object has sufficient uniformity and sufficient light intensity for photopolymerization for dentistry. The lens group can be easily sterilized, the light intensity at the center of the optical path can be increased, and a heat sink portion bent into a substantially L shape that exhibits a heat dissipation function is provided. Therefore, it is possible to provide a dental light irradiator with sufficient heat dissipation measures.
[0055]
According to the fourth aspect of the present invention, the overlapping portion of the light emitted from the light emitting portion and the light reflected from the mirror surface of the tapered mirror spacer disposed around the light emitting portion is caused by the light diffusion action of the concave lens. Dentistry that can obtain a suitable light intensity for photopolymerization for dentistry with uniformity on the work surface of the object to be irradiated by magnifying the portion with high light intensity and irradiating the work surface of the object to be irradiated A light irradiator can be provided.
[0056]
According to the fifth aspect of the present invention, a portion where the light from the light emitting portion attached in an inclined arrangement via the angle spacer and the light reflected from the mirror surface of the tapered mirror spacer arranged in the periphery overlaps the concave lens. The light-diffusing action can be used to magnify a portion with high light intensity and irradiate the work surface of the object to be irradiated. It is possible to provide a dental light irradiator capable of obtaining strength .
[0057]
According to the sixth aspect of the invention, the same effect as that of the fifth aspect of the invention can be obtained, and since the heat sink portion bent in a substantially L shape that exhibits the heat radiation action is provided, the heat radiation countermeasure is sufficient . A light irradiator can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic partial sectional view showing a configuration of a dental light irradiator according to a first embodiment of the present invention.
FIG. 2 is a schematic partial sectional view showing a configuration of a dental light irradiator according to a second embodiment of the present invention.
FIG. 3 is a schematic partial sectional view showing a configuration of a dental light irradiator according to a third embodiment of the present invention.
FIG. 4 is a schematic partial sectional view showing a configuration of a dental light irradiator according to a fourth embodiment of the present invention.
FIG. 5 is a schematic partial sectional view showing a configuration of a dental light irradiator according to a fifth embodiment of the present invention.
FIG. 6 is a plan view showing the arrangement of LED pellets in a dental light irradiator according to a fifth embodiment of the present invention.
FIG. 7 is an explanatory diagram showing an irradiation state on a working surface of an object to be irradiated in the dental light irradiator of the fifth embodiment.
FIG. 8 is a schematic partial sectional view showing a configuration of a dental light irradiator according to a sixth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pellet substrate 2 LED pellet 2A LED pellet 3 O-ring 4 Lead wire 5 Hand holding member 10 Substrate holding part 11 Air tube 12 Air escape hole 20 Optical rod 20a Outlet end 20b Base end 21 Work surface 22 Irradiated object 31 Cylindrical optical member 31b Projecting cylindrical portion 32 Micro lens group 33 Heat sink portion 35 Cylindrical holding member 36 Hand holding member cover 36b Air escape hole 42 Spacer 51 Tapered mirror spacer 52 Optical member 53 Concave lens 61 Angle spacer

Claims

In the vicinity of the tip of the hand-held member, provided with a light-emitting portion composed of a semiconductor light-emitting element pellet having a plurality of light-emitting layers that emit light toward the irradiated object,
A dental light irradiation comprising an optical rod having an optical path whose effective diameter increases from the light emitting unit side toward the irradiated object side as an optical element having an optical diffusion action at a front position of the light emitting unit. vessel.

A dental light irradiator provided with a light emitting portion made of a semiconductor light emitting element pellet having a plurality of light emitting layers emitting light toward an irradiated object in the vicinity of the tip of the hand-held member,
The light-emitting portion is attached to the distal end side of a hand-held member cover bent in a substantially L shape attached to the outer periphery of one end of the hand-held member via a cylindrical holding member,
A cylindrical tapered mirror spacer having a mirror surface as an inner peripheral surface integrally held by a cylindrical optical member detachably attached to the hand-held member cover by screw connection at a position in front of the light emitting unit and a light beam from the light emitting unit A dental light irradiator comprising a microlens group in which a plurality of microlenses, which are optical elements having a light diffusing action arranged perpendicular to a direction, are arranged .

A dental light irradiator provided with a light emitting portion made of a semiconductor light emitting device pellet having a plurality of light emitting layers emitting light toward an irradiated object in a multilayer arrangement near the tip of the hand-held member,
The semiconductor light emitting device pellet of the light emitting part is attached to the front end side of a hand holding member cover bent in a substantially L shape attached to the outer periphery of one end of the hand holding member via a cylindrical holding member,
At the front position of the light emitting part, the center of the optical path is formed by a cylindrical taper mirror spacer and an angle spacer having a mirror surface as an inner peripheral surface integrally held by a cylindrical optical member removably attached to the handheld member cover by screw connection A microlens group in which a plurality of microlenses that are optical elements having a light diffusing action held in an inclined arrangement facing the direction are arranged ;
A dental light irradiator characterized in that a heat sink portion bent in a substantially L shape that exhibits a heat radiation function is provided in the hand-held member cover with one end attached to the hand-held member and the other end attached to the back surface of the light-emitting portion. .

A dental light irradiator provided with a light emitting portion made of a semiconductor light emitting element pellet having a plurality of light emitting layers emitting light toward an irradiated object in the vicinity of the tip of the hand-held member,
The light-emitting portion is attached to the distal end side of a hand-held member cover bent in a substantially L shape attached to the outer periphery of one end of the hand-held member via a cylindrical holding member,
As a cylindrical tapered mirror spacer having an inner peripheral surface held by a cylindrical optical member attached to the front end side of the hand-held member cover at the front position of the light emitting unit as a mirror surface and an optical element that exhibits a light diffusing action A dental light irradiator comprising a concave lens.

A dental light irradiator provided with a light emitting portion made of a semiconductor light emitting device pellet having a plurality of light emitting layers emitting light toward an irradiated object in a multilayer arrangement near the tip of the hand-held member,
The semiconductor light-emitting element pellets of the light-emitting portion are angle spacers so as to face the center direction of the optical path respectively at the front end side of a hand-held member cover bent in a substantially L shape attached to the outer periphery of one end of the hand-held member via a cylindrical holding member Attached to the inclined arrangement via
As a cylindrical tapered mirror spacer having an inner peripheral surface held by a cylindrical optical member attached to the front end side of the hand-held member cover at the front position of the light emitting unit as a mirror surface and an optical element that exhibits a light diffusing action A dental light irradiator comprising a concave lens.

A dental light irradiator provided with a light emitting portion made of a semiconductor light emitting device pellet having a plurality of light emitting layers emitting light toward an irradiated object in a multilayer arrangement near the tip of the hand-held member,
The semiconductor light-emitting element pellets of the light-emitting portion are angle spacers so as to face the center direction of the optical path respectively at the front end side of a hand-held member cover bent in a substantially L shape attached to the outer periphery of one end of the hand-held member via a cylindrical holding member Attached to the inclined arrangement via
As a cylindrical tapered mirror spacer having an inner peripheral surface held by a cylindrical optical member attached to the front end side of the hand-held member cover at the front position of the light emitting unit as a mirror surface and an optical element that exhibits a light diffusing action With a concave lens,
A dental light irradiator characterized in that a heat sink portion bent in a substantially L shape that exhibits a heat radiation function is provided in the hand-held member cover with one end attached to the hand-held member and the other end attached to the back surface of the light-emitting portion. .