JP4642870B2 - Led照明器具 - Google Patents
Led照明器具 Download PDFInfo
- Publication number
- JP4642870B2 JP4642870B2 JP2008075819A JP2008075819A JP4642870B2 JP 4642870 B2 JP4642870 B2 JP 4642870B2 JP 2008075819 A JP2008075819 A JP 2008075819A JP 2008075819 A JP2008075819 A JP 2008075819A JP 4642870 B2 JP4642870 B2 JP 4642870B2
- Authority
- JP
- Japan
- Prior art keywords
- leds
- color
- light output
- array
- current
- 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 - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0457—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
- F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/003—Lens or lenticular sheet or layer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
- H05B45/22—Controlling the colour of the light using optical feedback
Description
12 緑色のLED
14 青色のLED
16 配線基板
18 ハウジング
22 ディフューザ
24 フォトダイオード
26 フィードバックリンク
30 制御器
41 入力部
42 入力部
43 入力部
44 調光器
50 交流変換器
Claims (8)
- 複数の色の各々において少なくとも1つのLEDを有するLEDのアレイと、
各前記色の前記LEDが光出力を持ち、電流が前記アレイ内の前記LEDの全てに供給される際に該アレイが組合せ光出力を持つように、各前記色の前記LEDに電流を供給する手段と、
前記アレイ内の全ての前記LEDの前記光出力を測定するように構成されたフォトダイオードと、
時間パルスのシーケンスにおいて、各色の前記LEDの前記光出力が、前記アレイに対して単一の前記フォトダイオードだけを用いて、別々に測定されるように、選択的に、測定されている色以外の全ての色の前記LEDへの電流を閉じる手段と、
各色の測定された光出力を各色の関連の所望の光出力と比較する手段と、
所望の組合せ光出力が実現され得るように、前記比較に基づいて各色のLEDへの前記電流を調整する手段とを有する照明器具であって、
前記測定の合間には、前記アレイ内の前記LEDの全てに電流が供給される照明器具。 - 更に、前記アレイ内の全てのLEDから光を受け取るように構成された光ファイバーを有し、該光ファイバーが前記フォトダイオードに接続されている請求項1に記載の照明器具。
- 更に、前記所望の光出力を設定するユーザ入力制御を有する請求項1に記載の照明器具。
- LEDの前記アレイが赤色、緑色及び青色の各々のLEDを有し、前記組合せ光出力が白色になるように該LEDが構成されている請求項1に記載の照明器具。
- 更に、一様な白色光を得るために各前記色を混合する混合光学部品を有する請求項4に記載の照明器具。
- 複数の色の各々において少なくとも1つのLEDを有するLEDのアレイと、前記アレイ内の全ての前記LEDの光出力を測定するように構成されたフォトダイオードとを有するLED照明器具のカラーバランスを調節する方法であり、
各前記色の前記LEDが光出力を持ち、電流が前記アレイ内の前記LEDの全てに供給される際に該アレイが組合せ光出力を持つように、各前記色の前記LEDに電流を供給するステップと、
選択的に、測定されている色以外の全ての色の前記LEDへの電流を閉じることにより、前記アレイに対して単一の前記フォトダイオードだけを用いて各前記色の前記LEDの前記光出力を順次測定するステップと、
各色の測定された光出力を各色の関連の所望の光出力と比較するステップと、
所望の組合せ光出力が実現され得るように、前記比較に基づいて各色の前記LEDへの前記電流を調節するステップとを有する方法であって、
前記電流を供給するステップが、前記測定の合間には、前記アレイ内の前記LEDの全てに電流を供給するステップを有する方法。 - 前記順次測定するステップは、各色に対して1つの時間パルスを持つ測定シーケンスにおいて各前記色の前記LEDに別々に電流を供給するステップと、各前記時間パルスの間に当該色のうちの一色の前記LEDの前記光出力を測定するステップとを有する請求項6に記載の方法。
- 前記電流を供給するステップは、各前記時間パルスの間、測定されている色以外の全ての色の前記LEDへの前記電流を閉じるステップと、前記パルスと前記パルスとの間、及び前記測定シーケンスを分離する測定の合間には、前記アレイ内の前記LEDの全てに電流を供給するステップとを有する請求項7に記載の方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/216,262 US6127783A (en) | 1998-12-18 | 1998-12-18 | LED luminaire with electronically adjusted color balance |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000589914A Division JP4147004B2 (ja) | 1998-12-18 | 1999-12-02 | Led照明器具 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008198618A JP2008198618A (ja) | 2008-08-28 |
JP4642870B2 true JP4642870B2 (ja) | 2011-03-02 |
Family
ID=22806393
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000589914A Expired - Fee Related JP4147004B2 (ja) | 1998-12-18 | 1999-12-02 | Led照明器具 |
JP2008075819A Expired - Lifetime JP4642870B2 (ja) | 1998-12-18 | 2008-03-24 | Led照明器具 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000589914A Expired - Fee Related JP4147004B2 (ja) | 1998-12-18 | 1999-12-02 | Led照明器具 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6127783A (ja) |
EP (1) | EP1056993B1 (ja) |
JP (2) | JP4147004B2 (ja) |
CN (1) | CN1114095C (ja) |
DE (1) | DE69906260T2 (ja) |
WO (1) | WO2000037904A1 (ja) |
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Also Published As
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CN1291282A (zh) | 2001-04-11 |
DE69906260D1 (de) | 2003-04-30 |
JP4147004B2 (ja) | 2008-09-10 |
WO2000037904A1 (en) | 2000-06-29 |
JP2002533870A (ja) | 2002-10-08 |
EP1056993B1 (en) | 2003-03-26 |
US6127783A (en) | 2000-10-03 |
EP1056993A1 (en) | 2000-12-06 |
JP2008198618A (ja) | 2008-08-28 |
DE69906260T2 (de) | 2003-12-04 |
CN1114095C (zh) | 2003-07-09 |
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