JP2007123153A5 - - Google Patents

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JP2007123153A5
JP2007123153A5 JP2005316163A JP2005316163A JP2007123153A5 JP 2007123153 A5 JP2007123153 A5 JP 2007123153A5 JP 2005316163 A JP2005316163 A JP 2005316163A JP 2005316163 A JP2005316163 A JP 2005316163A JP 2007123153 A5 JP2007123153 A5 JP 2007123153A5
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Japan
Prior art keywords
light
light emitting
lighting system
emitting device
difference signal
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JP2005316163A
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Japanese (ja)
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JP2007123153A (en
JP4944424B2 (en
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Priority to JP2005316163A priority Critical patent/JP4944424B2/en
Priority claimed from JP2005316163A external-priority patent/JP4944424B2/en
Publication of JP2007123153A publication Critical patent/JP2007123153A/en
Publication of JP2007123153A5 publication Critical patent/JP2007123153A5/ja
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Publication of JP4944424B2 publication Critical patent/JP4944424B2/en
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Claims (7)

主要な発光波長域がそれぞれ赤（Ｒ）、緑（Ｇ）、青（Ｂ）にある３種の光を個別に発光できる発光装置と、該発光装置の発光を制御する制御装置と、前記発光波長域のそれぞれにある光を選択的に検出できる光検出装置と、該光検出装置からの出力を基に前記発光装置の発光を制御するためのフィードバック信号を生成して前記制御装置に提供するフィードバック手段とを備える照明システムであって、
前記フィードバック手段が、前記光検出装置の出力に基づく３刺激値Ｘ，Ｙ，Ｚから、所定の色度ｘ0、ｙ0を基に生成された重みを伴う差分信号：
ｄxy＝（ｙ0／ｘ0）＊Ｘ−Ｙ、及び、
ｄyz＝Ｙ−（ｙ0／（１−ｘ0−ｙ0））＊Ｚ
を生成して前記制御装置に提供し、該制御装置は、前記差分信号ｄxy 及びｄyzがともに可及的にゼロとなるように前記発光装置の発光を制御するよう構成されることからなる、照明システム。 A light emitting device capable of individually emitting three types of light having main light emission wavelength ranges of red (R), green (G), and blue (B), a control device for controlling light emission of the light emitting device, and the light emission providing light in a respective wavelength region and the light detection device can be selectively detected, the control unit generates a feedback signal for controlling the light emission of the light emitting device based on the output from the light detector a lighting system comprising a feedback means,
Said feedback means, tristimulus values X based on the output of the light detecting device, Y, Z from the predetermined chromaticity x 0, y 0 the difference signal with weights generated based on:
d xy = (y 0 / x 0) * X-Y, 及 beauty,
d yz = Y- (y 0 / (1-x 0 -y 0)) * Z
Provides generated by the control device, control device, the are consists earthenware pots by controlling the light emission of the light emitting device so that the difference signal d xy 及 beauty d yz is zero both as much as possible A lighting system consisting of things. 前記所定の色度ｘ0、ｙ0 が、操作者の入力に応じて変更可能である、請求項１に記載の照明システム。 It said predetermined chromaticity x 0, y 0 can be changed depending on input by the user, the lighting system according to claim 1. 前記所定の色度ｘ0、ｙ0 が、書き換え可能にあるいは書き換え不可能にメモリＩＣに格納される、請求項２に記載の照明システム。 Said predetermined chromaticity x 0, y 0 is stored rewritable or impossible rewritten in memory IC, lighting system of claim 2. 前記光検出装置からの前記出力を受けて前記３刺激値を生成する３刺激値変換手段と、前記３刺激値変換手段からの前記３刺激値を受けて前記差分信号を生成する差分信号生成手段とを、前記フィードバック手段が含み、前記３刺激値変換手段及び前記差分信号生成手段は、共に前記光検出装置に近接配置されることからなる、請求項１に記載の照明システム。 A tristimulus value converting means for generating the tristimulus values by receiving the output from the light detecting device, the differential signal to generate the differential signal receiving said tristimulus values from the previous SL tristimulus value converter generating and means, including said feedback means, said tristimulus value converting means and said difference signal generating means consists disposed close to the light detecting device co illumination system according to claim 1. 前記３刺激値変換手段及び前記差分信号生成手段が、前記光検出装置と共通の基板上に実装される、請求項４に記載の照明システム。 The tristimulus value converting means and said difference signal generating means are mounted on a common substrate and the light detecting device, the illumination system according to claim 4. 異なる波長域で発光する複数の発光ダイオード素子を、前記発光装置が含む、請求項１に記載の照明システム。 A plurality of light emitting diode elements that emit light in different wavelength regions, including the light emitting device illumination system according to claim 1. 一体をなすカラーセンサにより前記光検出装置が構成される、請求項１に記載の照明システム。 The light detection device is constituted by the color sensor forming an integrated lighting system according to claim 1.
JP2005316163A 2005-10-31 2005-10-31 Lighting system Expired - Fee Related JP4944424B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005316163A JP4944424B2 (en) 2005-10-31 2005-10-31 Lighting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005316163A JP4944424B2 (en) 2005-10-31 2005-10-31 Lighting system

Publications (3)

Publication Number Publication Date
JP2007123153A JP2007123153A (en) 2007-05-17
JP2007123153A5 true JP2007123153A5 (en) 2008-11-27
JP4944424B2 JP4944424B2 (en) 2012-05-30

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ID=38146763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005316163A Expired - Fee Related JP4944424B2 (en) 2005-10-31 2005-10-31 Lighting system

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JP (1) JP4944424B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012164638A1 (en) * 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 Backlight device and backlight control method
JP6436336B2 (en) 2014-02-13 2018-12-12 Ｔｉａｎｍａ Ｊａｐａｎ株式会社 Backlight light source device and liquid crystal display device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6495964B1 (en) * 1998-12-18 2002-12-17 Koninklijke Philips Electronics N.V. LED luminaire with electrically adjusted color balance using photodetector
US6507159B2 (en) * 2001-03-29 2003-01-14 Koninklijke Philips Electronics N.V. Controlling method and system for RGB based LED luminary
US6630801B2 (en) * 2001-10-22 2003-10-07 Lümileds USA Method and apparatus for sensing the color point of an RGB LED white luminary using photodiodes
US6552495B1 (en) * 2001-12-19 2003-04-22 Koninklijke Philips Electronics N.V. Adaptive control system and method with spatial uniform color metric for RGB LED based white light illumination

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