JP4988524B2 - 発光ダイオード照明器具 - Google Patents
発光ダイオード照明器具 Download PDFInfo
- Publication number
- JP4988524B2 JP4988524B2 JP2007303214A JP2007303214A JP4988524B2 JP 4988524 B2 JP4988524 B2 JP 4988524B2 JP 2007303214 A JP2007303214 A JP 2007303214A JP 2007303214 A JP2007303214 A JP 2007303214A JP 4988524 B2 JP4988524 B2 JP 4988524B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light emitting
- emitting diode
- emitting diodes
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000009826 distribution Methods 0.000 claims description 37
- 230000035945 sensitivity Effects 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 27
- 230000003595 spectral effect Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 description 22
- 230000003287 optical effect Effects 0.000 description 17
- 238000005286 illumination Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 239000003086 colorant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Description
2 LED
21 赤色LED
22 緑色LED
23 青色LED
4 光センサ
41 赤色光透過フィルタ
42 緑色光透過フィルタ
43 青色光透過フィルタ
44〜46,49,50 光検出素子
47 赤外線透過フィルタ
48 紫外線透過フィルタ
5 電源回路
6 制御部
Claims (2)
- 互いに分光分布が異なる複数の発光ダイオードと、前記発光ダイオードを点灯させるための電源回路と、前記発光ダイオードの光出力を検出する光センサと、前記光センサの検出結果に基づき、前記電源回路から前記発光ダイオードの各々に供給される電流を制御することで、該発光ダイオードの各々の光出力を制御する制御部と、を備えた発光ダイオード照明器具において、
前記光センサは、前記複数の発光ダイオードのピーク波長にそれぞれ受光感度を持つ複数の第1の光検出素子と、前記複数の発光ダイオードの分光分布から外れた波長帯域に受光感度を持つ第2の光検出素子と、を有し、
前記複数の第1の光検出素子は、それらの受光感度分布が互いに重複しないように構成されていることを特徴とする発光ダイオード照明器具。 - 前記複数の発光ダイオードは、赤色発光ダイオード、青色発光ダイオード又は緑色発光ダイオードのいずれかであり、
前記第2の光検出素子は、赤外線又は紫外線を検出することを特徴とする請求項1に記載の発光ダイオード照明器具。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007303214A JP4988524B2 (ja) | 2007-11-22 | 2007-11-22 | 発光ダイオード照明器具 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007303214A JP4988524B2 (ja) | 2007-11-22 | 2007-11-22 | 発光ダイオード照明器具 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009129687A JP2009129687A (ja) | 2009-06-11 |
JP4988524B2 true JP4988524B2 (ja) | 2012-08-01 |
Family
ID=40820415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007303214A Expired - Fee Related JP4988524B2 (ja) | 2007-11-22 | 2007-11-22 | 発光ダイオード照明器具 |
Country Status (1)
Country | Link |
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JP (1) | JP4988524B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012164638A1 (ja) * | 2011-05-27 | 2012-12-06 | Necディスプレイソリューションズ株式会社 | バックライト装置、及びバックライト制御方法 |
CN116686395A (zh) * | 2021-09-14 | 2023-09-01 | 奥林巴斯株式会社 | 光源装置及具备该光源装置的内窥镜系统 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3242495B2 (ja) * | 1993-07-01 | 2001-12-25 | シャープ株式会社 | 多層膜フィルタ付き受光素子及びその製造方法 |
JPH11260572A (ja) * | 1998-03-13 | 1999-09-24 | Omron Corp | 照明装置 |
JP2007250986A (ja) * | 2006-03-17 | 2007-09-27 | Harison Toshiba Lighting Corp | Ledバックライト装置 |
-
2007
- 2007-11-22 JP JP2007303214A patent/JP4988524B2/ja not_active Expired - Fee Related
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Publication number | Publication date |
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JP2009129687A (ja) | 2009-06-11 |
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