ILLUMINATION DEVICE
PROBLEM TO BE SOLVED: To make the fading of a filter hardly occur in an illumination device having the filter and to prevent a remaining color of the filter and an incomplete color change.SOLUTION: A filter 3 includes: an electrochemistry responsive material layer 33 including an electrochromic mate...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To make the fading of a filter hardly occur in an illumination device having the filter and to prevent a remaining color of the filter and an incomplete color change.SOLUTION: A filter 3 includes: an electrochemistry responsive material layer 33 including an electrochromic material; an auxiliary electrochromic responsive material layer 37 in which reduction reaction is caused when an oxidation reaction is occurring in the electrochemistry responsive material layer 33 and the oxidation reaction is occurring when reduction reaction is caused in the electrochemistry responsive material layer 33, and this allows an electric balance to be maintained. The auxiliary electrochromic responsive material layer 37 is structured of a metal in which an electric charge more than the electric charge trapped by the electrochemistry responsive material layer 33 is trapped. According to this structure, since the auxiliary electrochromic responsive material layer 37 is difficult to react with an electrolyte layer 34, the fading of the filter 3 can be made difficult to occur, and also since the color change of the electrochromic material is sufficiently caused, the color remaining of the filter 3 and the incomplete color change can be prevented.SELECTED DRAWING: Figure 2
【課題】フィルタを備えた照明装置において、フィルタの褪色を起こり難くし、しかもフィルタの色残りや不完全な色変化を防止する。【解決手段】フィルタ3は、エレクトロクロミック材料を含む電気化学応答性材料層33と、電気化学応答性材料層33で酸化反応が起こっている場合には還元反応を起こし電気化学応答性材料層33で還元反応が起こっている場合には酸化反応を起こして電気バランスを保つ補助電気化学応答性材料層37と、を有する。補助電気化学応答性材料層37は、電気化学応答性材料層33にトラップされた電荷以上の電荷をトラップする金属により構成されている。この構成によれば、補助電気化学応答性材料層37が電解質層34と反応し難いので、フィルタ3の褪色を起こり難くすることができ、また、エレクトロクロミック材料の色変化が十分に起きるので、フィルタ3の色残りや不完全な色変化を防止することができる。【選択図】図2 |
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