TW512548B - LED luminaire - Google Patents
LED luminaire Download PDFInfo
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- TW512548B TW512548B TW090127304A TW90127304A TW512548B TW 512548 B TW512548 B TW 512548B TW 090127304 A TW090127304 A TW 090127304A TW 90127304 A TW90127304 A TW 90127304A TW 512548 B TW512548 B TW 512548B
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- 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
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- 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
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
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- 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
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
- F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
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- 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]
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- 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]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
- Led Device Packages (AREA)
Description
512548 A7 B7 __ 五、發明説明(1 ) 本申請案見是先前提出申請之美國專利申請案第us-A 6, 127, 783號之一部份接續申請案,並且以引用的方式併入 本文中。 本發明與一種具有諸多紅,綠及藍色發光二極體(light emitting diodes,簡稱LEDs)之陣列的照明器有關;且更 特別是與一種具有控制系統的發白光照明器有關,該控制 系統用來調整諸多個別組件,以便維持一種所需彩色平衡 (色度(chromaticity))。 美國專利第5, 30 1, 090號披露一種具有諸多LED之陣列 的LED照明器,該陣列具有:許多LED ;紅,綠及藍三種顏 色中每種顏色都有。每種顏色的LED都以並聯方式來佈線, 並且配備一個分離電源,進而提供一種漫射屏(diffusi〇n screen)在陣列的上方。藉由針對各個顏色的三個旋鈕,以 手動方式來控制組裝體之色度;因而並未提及自動控制。 LED都是基於半導體;就一既定驅動電流而言,光輸出 會因晶片(cl ip)差異而變化,並且也會隨著每個晶片壽命 而變化。光輸出也會隨著溫度而成反比變化,但是對每種 肩色而言不是均句地變化。最後,在一既定顏色的諸多lEd 之區塊中,若其中一個或更多LED故障,則光輸出會變化。 假設有能夠響到任何LED陣列之彩色平衡的所有因數,自動 地監控和調整(regulate)彩色平衡應該是想要的,尤其是 在一種發白光照明器中。 在基於一既定顏色的溫度中,譬如說是在交通信號燈中 ,控制供應到LED陣列之電流是為人所熟知的。因為溫度 -4 - 本紙張尺度適;fl中@ S家標準(CNS) Μ規格⑽χ 297公爱) -- 512548 A7 _ . B7 五、發明説明Q ) (及因此而來的光強度)對各種顏色而言不是均勻地變化; 所以在一種具有許多顏色之LED的照明器中,這種方案應該 是挺麻煩的。 不管會使個別顏色之光輸出產生變化的諸多因數,自動 地控制一種發白光照明器之色度應該是想要的。 就各個顏色其中每種顏色而言,不用訴諸於一種光譜解 析的(spectrally)光測量系統,諸如:一種光電二極體 (photodiode)及濾光器(filter)系統,自動地控制色度應 該是進一步想要的。 根據本發明’基於藉由佈置單一光電二極體以測量陣列 中的所有LED之光輸出所產生的測量,以電子方式來控制一 種發白光LED照明器的組合式光輸出(色度)。在一連串的時 間脈衝中,藉由各別地測量每種顏色的LED之光輸出來達成 此事。就諸多紅,綠及藍色LED之陣列而言,在一個測量順 序(measuring sequence)中就有三個時間脈衝。在每個時 間脈衝期間,將針對不要被測量之顏色的電流斷開。一種 典型光一極體的回應時間(resp〇nse time)是極短的;所以 ,能夠在觀察者不會察覺出的一段足夠短的時間(例如: 毫秒(ms))中來執行測量順序。 將針對諸多顏色之測量光輸出與可能由用戶控制加以 設足之所需光輸出相比較;並且必要時,將針對諸多顏色 區塊(color blocks)之電源加以改變。於是,不管可能 色度產生變化的諸多因數,自動地控制色度。用戶輸入訊 號允許將所需色度改變成··不是暖白光(warmwhi^)[更多 -5- 512548 A7 B7 五、發明説明^ ) — 紅色輸出],就是冷白光(co〇l white)[更多藍色輸出]。 為了最佳補償在一加溫階段(warm_up phase)期間之溫 度相關的fe:化,在加溫期間,電子控制電路可能會更頻繁 地執行測量順序。在達到穩定的工作溫度之後,非經常性 的測量就足以補償在LED中的長期變化。 在每種顏色的LED都以並聯方式來佈線的地方,藉由在 下一假測量順序期間改變供應到其餘的LED之電流,就能夠 自動地補償一個led之故障。 根據本發明之另一實施例,藉由一種包括測量驅動脈衝 的電流供應源驅動led陣列,該測量驅動脈衝具有··至少一 個第一提升部份,以及一個“斷開,,部份。每種顏色的LED 都具有光輸出,該光輸出:在尋常操作期間具有一種標稱 連績值,在提升部份期間會增加,而在“斷開,,部份期間 則會被中斷。當藉由電流供應源來供應電流時,LED陣列就 會具有一種組合式光輸出。佈置光電二極體,以便測量陣 列中的所有LED之光輸出。選擇性斷開供應到諸多led之電 流’使得:光電二極體會各別地測量針對每種顏色的光輸 出,以回應測量驅動脈衝。 根據諸多附圖和接下來的描述,本發明的這些和附加優 點將會變得顯而易見的。 圖1是··根據本發明的一種照明器之一橫截面圖,該照 明器具有一種光纖之光傳送器(light pick-up); 圖2是:照明器之一示意圖; 圖3是:控制器之一邏輯順序圖;以及 __ ·6- 本紙張尺度it财標準(CNS) A4規格(2Ϊ0Χ297公爱) 512548 A7 ___B7 五、發明説明(4 ) 圖 4疋 * 光學回授系統(〇ptical feedback systeffl)t_ 時序圖; 圖5圖解說明:在一個測量順序期間之一測量驅動脈衝 〇 參考圖1 ’根據本發明的一種LED照明器包括諸多led 10, 12, 14的二維陣列,該陣列包括··許多LED,許多顏色中 每種顏色都有。在目前情形下,該陣列包括:安裝在外罩 (housing) 18 中之一佈線基板(wire(j substrate) 16上的諸 多紅色LED 10,綠色LED 12,以及藍色LED 14。將諸多LED 加以佈置,使得總光輸出是白色;提供一種安裝在外罩i 8 上的漫射體(dif fuser)22以增強混色。可能使用諸如琥珀 色之加色(additional colors)的諸多LED來增強混色選擇 (mixing options)。混合光學裝置(mixing 〇pt ics)可能包 括與漫射體不同的裝置。 佈置單一光電二極體24以感測在陣列中之所有LED的光 強度。 在圖1中,沿著外罩18之長度而延伸的光纖(optical Π ber)會將光傳送到光電二極體24,它會經由回授線路26 而產生針對控制器3〇之對應電流訊號。就小型陣列而言, 每個陣列都佈置有光電二極體,以代替繪示於圖1中的光纖 佈置。 也參考圖2,控制器30會將來自光電二極體24之回授訊 號轉換成諸多色點測量值(color point measurements), 將它們和透過用戶輸入40所提供的所需設定值相比較。基 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 512548 A7 _______ B7 五、發明説明(5 ) 於比較,控制器30會決定:所需彩色平衡是否存在;於是 ’發訊給各個二極體丨〇, 12, μ之電流調整器(current regulators)ll,13, 15。於是,將來自交流轉換器(AC converter)50之功率輸入轉換成電流輸出訊號;該訊號會 控制各個顏色(紅,綠,及藍色)之光強度,以獲得所需彩 色平衡。藉由在基板16上的佈線,將該陣列之每種顏色的 LED保持在公用電位處。針對設計設定值的用戶控制包括: 各個顏色之輸入訊號41,42, 43 ;以及調光器(dimmer)44, 它會控制因此所得的白光之總強度。 圖3输示:針對在示意圖中之照明器的控制邏輯。當開 啟k 31時’就會供電到led,並且啟動測量順片3 2。將諸多 色點測量值和所需設定值相比較33,按照用戶調整35而將 該設定值加以儲存34。基於這項比較,會決定36是否需要 顏色調整;若是這樣,則執行調整37,並且重複測量順序 32 °若決定不需要顏色調整36,則控制器會在重複測量順 序32之别等待一段預定測量間隔(interval) 38。 圖4疋·圖解說明控制邏輯之一時序圖,當開啟照明器 時就θ執行该控制邏輯。四個訊號軌跡中的最上 面訊號是一種由相隔一段時間(測量間隔)之一連串的三個 脈衝(測量順序)所組成的測量訊號。在第一脈衝期間,將 練巴和藍色LED斷開,使得光電二極體能夠測量紅色lED之 光強度;在第二脈衝期間,將紅色和藍色LED斷開,使得光 電一極體能夠測量綠色LED之光強度;在第三脈衝期間,將 紅色和綠色LED斷開,使得光電二極體能夠測量藍色LED之 _ —___ - 8 _ 本紙狀度咖格⑼㈣的公货)---—-— M2548
光強度。然後,控制電子電路會比 •祐曰六叮处命$ 平乂 4 !強度和所需強度 ,、 在可月匕疡要的時候,加以铜敕·糾由2; ϊ 莉正·供應到一個或更多 群組的LED之電流。 種典型光電二極體的回靡g去卩gj 任一 應時間是極短的,並且每個脈 衝可能因為太短而使觀察者不备定 τ屯"I曰祭見出,例如:i 〇毫秒。 於是’在照明器之正常操作期間能夠執行測量順序。測量
間隔的長度端視光輸出快速變化而定。此間隔長度端視LED 溫度正在變化得多麼快速而定。該間隔可能從每分鐘或更 短到每隔數小時不等;能夠將控制邏輯加以規劃為:在敌 動後不久的頻繁測量;接著是,當達到敎工作溫度時的 非經常性測量。
有可能使照明器··包括一個以上的每種顏色都有的LED 串(String),並且個別地測量諸多LED串的輸出訊號。譬如 說,關於兩個三種顏色都有的LED串,一個測量順序就有六 個脈衝。在每種情形下,較適宜的是基於所有的一連串測 量來調整彩色平衡,而不是只基於對應光輸出來調整個別 顏色。 前述者是可作為範例的,因而不打算限制接下來的申請 專利範圍之範圍。 雖然在參考圖4之以上提及的每個通道(channel)中的 驅動脈衝實質上都是挺短的,譬如說是在1到2毫秒的數級 中;但是許多觀察者可能仍然注意到在發光中的閃爍。此 事會發生是因為··人眼藉由在大約15毫秒的間隔内加以累 積在眼中所接收的光來對光作出回應,因此,敏銳的眼睛能 -9 - 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 512548 A7 _______ B7 五、發明説明^ ) 夠觀察到像400微秒(# s) —樣短之時段的光中斷。於是, 將在一個測量順序中的每個“斷開,,時段縮短到4〇〇微秒 或更短是想要的。然而,就傳統電子電路測量諸多LED之光 強度而言’此持續時間(duration)可能是極短的。 根據本發明之另一實施例,改變在每個測量順序期間之 每個通道的驅動脈衝,以便順應這些可的閃爍。圖5圖解說 明:根據本發明之一實施例,在一個測量順序期間之一模 範測量驅動脈衝。於是,測量驅動脈衝包括:第一提升部 份,接著是“斷開”或中斷時段,隨之而來的是第二提升 部份。除此之外,還有會影響每個測量脈衝之選擇的三種 限制。第一,每個驅動脈衝之提升部份最好是儘可能低些 ,以避免對LED造成任何長斯損害。第二,“斷開”或中斷 時段最好是儘可能長些,使得利用較不昂貴的組件來執行 準確測量更容易。第三,為了避免可見的人造物 (artifacts);第一提升部份,“斷開,,時段以及第二提升 部份的整個順序最好是15毫秒左右。 根據本發明之一實施例,會提供在LED中之亮度水準 (light level)的穩定呈現之一測量驅動脈波包括:5毫秒 提升到標稱光輸出的120%,接著是2毫秒完全中斷電流,接 著是另一個5毫秒提升到標稱光輸出的丨2 〇 %。 根據本發明之另一實施例,雖然在那方面的範圍内,本 並未芝限,但疋,驅動脈衝序列是對稱的 士使得·在序列中的兩個提升部份都呈現相同的振幅和持 續時間。譬如說,根據本發明之又-實施例,測量驅動脈 裝 訂 線 -10- 512548 A7 一 __ B7 五、發明説明(q ) 一 衝包括兩個成份,它包括··第一提升部份,接著是“斷開 時段。再者,根據本發明的原理,可能使用其它形狀的 測量驅動脈衝,它具有:至少一個提升部份,以及一個 “斷開”部份。最好是,選擇驅動脈衝,使得:在人眼的 累積時間(即:大約15毫秒)内,被驅動LED之平均亮度水準 與在尋常操作期間的標稱連續值相同。 根據本發明之一實施例,光輸出大約與驅動電流成正比 ,使得:在驅動電流方面之一特定增加百分比對應於在光 輸出位準方面之一成比例的增加。於是,譬如說,若想要 將光輸出位準增加到12〇%,如圖5中所圖解說明的;則在驅 動電流方面的增加也會是一個預定百分比,譬如說是12〇% 。於是,可能使用一個測量驅動脈衝順序,它包括:一種 適於所有驅動位準的特定電流提升百分比。 泛然而’ LED不一定要呈現:在光輸出位準變化與在所有 操作電流下的驅動電流變化之間的_種比例關係。於是, 根據本發明之另-實施例,為了要獲得:在諸多測量順序 期間,在維持-恒定光輸出位準方面之一較佳準確度;就 得將照明器加以校準光對電流關係,並且選擇諸多提升電 流值而使得··在所有操作位準下,亮度水準平均達到: 直:位準。為了要儲存己校準電流對光輸出關係的資料, 就得將智慧型控制電路30加以配置而包括一種資料庫;該 資料庫會提供:針對諸多操作條件之一範圍,對於在光輸 出位準方面之任何所需變化而言是必需的電流變化量。
Claims (1)
- 512548 A B c D 申請專利範圍 1· 一種照明括: —諸多L__0, 12, 14)之陣列’該陣列包括:至少_個 LED,許 多_ 中每種顏色都有; 裝 -將電流供應到該每種顏色的諸多LED (1 〇, 12,14)之 裝置(5 0),該電流具有:包括一種測量驅動脈衝之一測 量時段,該測量驅動脈衝具有:至少一個第一提升部份 ,以及一個“斷開,,部份,該每種顏色的諸多 LED(10,12,14)都具有光輸出,使得該光輸出:在尋常 操作期間都具有一種標稱連續值,在該提升部份期間會 增加,而在該“斷開,,部份期間則會被中斷,並且當將 電流供應到陣列中的所有LED (10, 12, 14)時,該陣列就 會具有一種組合式光輸出; -佈置光電二極體(24),以便測量陣列中的所有 LED(10,12,14)之光輸出;以及 -用來選擇性斷開供應到該諸多LED(10, 12, 14)之電 流的裝置,使得:該光電二極體(24)會各別地測量針對 每種顏色的光輸出,以回應該測量驅量驅動脈衝。 2 ·根據申请專利範圍第1項之照明器,其中··在測量時段 期間的平均光輸出實質上等於在尋常操作期間的標稱 連續光輸出,以避免可見的閃爍。 3·根據申請專利範圍第2項之照明器,其中該測量驅動脈 衝進一步包括:接在該“斷開”時段之後的第二提升部 份。 4·根據申請專利範圍第3項之照明器,其中··該第一和第 -12- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 圍範利 專 請 中 AB c D 一疋升部份都具有相同的持續時間和振幅。 5·根據申請專利範圍第4項之照明器,其中:該第一和第 二提升部份都是該標稱連續光輸出值的12〇%。 6.根據申請專利範圍第5項之照明器,其中:該第一和第 二提升部份的持續時間大約是5亳秒,而該“斷開,’時 段的持續時間則是2毫秒。 7·根據申請專利範圍第2項之照明__一步包栝:用來儲 存使LED驅動電流變化與led光變化有關聯之諸多 已校準數值的裝置。 犠I* 8· —種用來驅動在照明器中的諸多LED( 10, 12, 14)之陣列 的方法,該陣列包括至少一個LED,許多顏色中每種顏 色都有,該方法包括以下步驟: -將電流供應(31)到該每種顏色的諸多 LED(10, 12, 14),使得:該諸多 LED( 10, 12, 14)都具有光 輸出,該光輸出在尋常操作期間具有一種標稱連續值; -在一個測量時段期間提升該電流,以便界定一種具 有至少一個第一提升部份的測量驅動脈衝; -在該測量時段期間“斷開”該電流,以便界定一個 “斷開”部份,使得該光輸出:在該提升部份期間會增 加,而在該“斷開”部份期間則會被中斷,並且當將電 流供應到陣列中的所有LED (10,12,14)時,該陣列就會 具有一種組合式光輸出; -測量在陣列中的所有LED (10, 12, 14)之光輸出(32) :以及 -13- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 512548 A BCD 申請專利範圍 一選擇性斷開供應到該諸多LED(l〇, 12, 14)之電流,以 便各別地測量針對每種顏色的&輸出,以回應該測量驅 動脈衝。 丨_ 根據申請專利範圍第8項之方_—步包括:用來維持 在測量時段期間的平均光輸__丨質上等於在該尋常操 作期間的標稱連續光輸出 以)|§#可見的閃爍之步驟。 ίο.根據申請專利範圍第9項之方一步包括:用來提升 該電流以便界定接在該“斷時段之後的第二提升 部份之步驟。 二, 11.根據申請專利範圍第10項之之方一步包括··用來維 持該第一和第二提升部份具有相||的持續時間和振幅 之步驟。 12·根據申請專利範圍第η項之年_ 一步包括:用來將該 電流訊號提升達到該標稱連續 13·根據申請專利範圍第μ項之 — 該第一和第二提升部份的持續到大約5毫秒,以及 用來維持該“斷開,,時段的持續時間到大約2毫秒之步 I 驛 Η.根據申請專利範圍第9項之方_卜步包括:用來儲存丨‘I 丨「iliUj! 出值的120%之步騾。 丨議^ 一步包括:用來維持使LED驅動電流變化與LED光_ 化有關聯的諸多已 校準數值之步驟。 -14 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 裝 訂
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-
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- 2000-09-15 US US09/663,050 patent/US6445139B1/en not_active Expired - Lifetime
-
2001
- 2001-09-05 CN CNB01802758XA patent/CN1269385C/zh not_active Expired - Lifetime
- 2001-09-05 EP EP01965257A patent/EP1321012B1/en not_active Expired - Lifetime
- 2001-09-05 KR KR1020027006159A patent/KR100788062B1/ko active IP Right Grant
- 2001-09-05 AT AT01965257T patent/ATE313239T1/de not_active IP Right Cessation
- 2001-09-05 WO PCT/EP2001/010250 patent/WO2002023954A1/en active IP Right Grant
- 2001-09-05 JP JP2002526803A patent/JP4749653B2/ja not_active Expired - Lifetime
- 2001-09-05 DE DE60115927T patent/DE60115927T2/de not_active Expired - Lifetime
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CN1269385C (zh) | 2006-08-09 |
KR100788062B1 (ko) | 2007-12-21 |
EP1321012B1 (en) | 2005-12-14 |
DE60115927D1 (de) | 2006-01-19 |
DE60115927T2 (de) | 2006-08-24 |
JP2004509431A (ja) | 2004-03-25 |
CN1393118A (zh) | 2003-01-22 |
WO2002023954A1 (en) | 2002-03-21 |
EP1321012A1 (en) | 2003-06-25 |
JP4749653B2 (ja) | 2011-08-17 |
ATE313239T1 (de) | 2005-12-15 |
US6445139B1 (en) | 2002-09-03 |
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