200813367 九、發明說明： 【發明所屬之技術領域】 本發明係關於發光裝置，並尤其係裝飾發光裝置。更特 疋口之本舍明係關於使用掃描的雷射光之發光裝置。 【先前技術】 λ " 在人工照明領域中，提供可變照明（同時關於色彩及發 光圖案）之需要不斷增加。用於提供可變光圖案之現存解 決方案通常係容量大且成本高，而不適合發光應用。範例 包括各種類型的用於投射影像的投影系統。 已發現雷射光在發光應用中之使用有較大的限制。 09-307174係發光裝置之一範例，其包含一雷射光源以及 一擴散器，從而產生由光源成形的點。 【發明内容】 本發明之一目的係提供一有效的用於產生可變發光圖案 的發光裝置。 ’、 藉由以下一發光裝置來達到此及其他目的，該發光裝置 包含至少兩個雷射光源，其用於發射不同波長的光；一掃 描器，其用於將來自該雷射光源之一雷射光束掃描至一漫 射面上，驅動器，其係配置成用於控制該雷射光源之調 變之至少一調變以及該掃描器之操作，從而該發射的光形 成一所需光圖案；以及一電力供應，其係配置成用於向該 雷射光源提供電力，使得該發光裝置在一給定時段上之平 均光譜輸出功率係基本恆定。 藉由使用一發光裝置中的一掃描雷射投影單元，可以產 119930.doc 200813367 ι用於各種發光應用的可變 案之光可同時用於照明空間。該穿=/時來自此等圖 景上之彩“ 亥凌飾圖案可包含-較暗背 厅、上之杉色線、一較暗背景上之彩色點、—~ 彩色點、在—白声此旦卜夕" ‘，衫色背景上之 白色月厅、上之衫色點等等。 基:=雷射之微投影系統變得技術可行、高 :因為雷射光源係非常高效，所以該有 功率效率。 4 I你畀有间 藉2用具有不同光發射光譜之複數個雷射光源，投影 化有用光譜，且可產生不僅形狀與大小可加以變 化而且色彩亦可進行變化之圖案。雷射光源之數量可係三 2例如’紅光、綠光及藍光，但其亦可係更大，並可包 含其他色光。藉由包含很多不同的彩色㈣，該發光裝置 之現色性指數得以增加，並可獲得一較廣範圍之色溫。在 一具體實施例中，該雷射之顏色係紅色、藍色及綠色（傳 統上用於掃描雷射投影單元中），但此並不限制本發明。 依據本發明，在一給定時段上之平均光譜輸出功率係基 本保持恆定。此致能藉由雷射投影系統成像之可變掃描圖 案’同時δ亥系統之光譜光輸出及本身用於照明空間之裝置 之光輪出保持恆定。此處表述”光譜輸出功率”旨在包含光 之光譜内容（即，發射的色譜）以及光之強度。藉由保持此 等因數基本恆定，該發光裝置不會在周圍環境中導致改變 陰影或改變色彩。進一步，不會覺察到該發射光之閃燦。 該光譜輸出恆定之時段較佳的係短於人眼之回應時間。 此確保發生之變化位於此較短時間標度内，而不會藉由眼 119930.doc 200813367 睛所察覺。 光料出功率之控制可藉由—控制系統完成，該控 广色彩感測器及一回授路徑，其係配置成用以向該電 該光譜輪出功率之回授，其中該電力供應係調 此回授控制光譜輸出功率。此解決方案確保 该先谱輸出功率基於實際所發射光進行控制。 或者’該電力供應基於該雷射# 譜輸出功率。此預知性能控制該光 二制系、、克不品任何回授，但當改變影響光 源之性能之條件（例如溫度）時可能係較跪弱。 -- 此：射面可係一反射面(比如牆或天花板)，其較佳的係 用-合相塗層進行塗布，但其亦可係透射式，使得來 自雷射光源的光通過該表面進行透射。 依據一具體實施例，該漫射面係外單之—出射窗，該雷 射光源包含於該外罩中。此設計確保該雷射光不會直接入 射至使用者的眼睛’使得基於雷射之發光單元在任何環境 中可安全使用。此外罩亦保護來自環境的靈敏雷射，以及 亦確保除了藉由該漫射出射窗進行漫射之外沒有雷射光從 該裝置中溢出。 該驅動器可配備有一記憶體用來儲存各種掃描圖案。進 -步’該驅動器具有一輪入用於接收掃描圖案。此輸入可 係一連接器（例如USB、咖394、串列匯流排或並列匯流 排），或可係-無線接收器（例如射頻㈣i0 freq贿RF) 接收器、紅外線（infrared ray; IR)接收器、藍牙接收器或 無線區域網路）。 119930.doc 200813367 【實施方式】 圖1顯不依據本發明之一第一具體實施例的一發光裝 置。該裝置包含一外罩1，較佳的係，該裝置之形狀及材 料使其在私人或公共環境中作為一發光應用之使用更具有 吸引力。 在忒外罩中，配置一雷射掃描單元2、一雷射掃描驅動 3以及電力供應4。該電力供應可具有一内部電源（例 如電池組（圖中未顯示））或連接於交流電幹線5。 该雷射掃描單元2包含一個或幾個雷射光源6、光學元件 7(將來自忒雷射光源的光合併成一束光）以及一掃描鏡將 此光束掃描於一表面上）。此雷射掃描單元（亦稱為微射束 器）在該技術中已為吾人所熟知，並在美國專利第 6,5 83,912號中加以說明，其以引用的方式併入本文中。 該雷射掃描單元2可包含幾個具有不同光發射光譜之雷 射光源。例如，該雷射掃描單元2可包含一紅光、一綠光 以及一藍光雷射光源，從而致能整個可見光譜中之光之產 生。但是，光源之數量不限於三個，與其相反，該發光裴 置可包含複數個具有不同波長之雷射光源，因此提供一更 好的現色性指數。 該外罩係進一步具有一開口 9，在該開口 9中安裝一漫射 出射窗1〇(例如，由透明塑膠材料構成）。此出射窗係調適 成將來自該雷射掃描單元2之光進行漫射，使得從該出射 窗10之外側10a發射的光係不再對人眼有害，並使得來自 該等雷射之光從各個方向照明整個空間。 119930.doc 200813367 驅動器3連接於續带如 、…田力^描單元2，並係調適成用以向該 田厂源提供—控制信號12用來調變來自該雷射光源6 的，從而致能該漫射出射窗1〇上的各種圖案之產生 驅動器可對儲存於一立麯丄 .^ ^ 、 °匕體中的若干不同圖案進行預編程 ’、’猎由使用者使用-選擇器開關13係可選擇。或者， 或組合，該驅動器可具有-輸入14(例如刪終端或（無線） 區域聪連接），通過該輸人可將圖案資訊载人該驅動器$ 中〇200813367 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a light-emitting device, and more particularly to a decorative light-emitting device. More specifically, this is about the use of scanned laser light. [Prior Art] λ " In the field of artificial lighting, the need to provide variable illumination (while with regard to color and illuminating patterns) is increasing. Existing solutions for providing variable light patterns are typically large in capacity and costly, and are not suitable for lighting applications. Examples include various types of projection systems for projecting images. Laser light has been found to have greater limitations in its use in lighting applications. An example of a luminescent device is 09-307174, which includes a laser source and a diffuser to create a spot formed by the source. SUMMARY OF THE INVENTION One object of the present invention is to provide an efficient illumination device for generating a variable illumination pattern. ', this and other objects are achieved by a light-emitting device comprising at least two laser light sources for emitting light of different wavelengths; a scanner for receiving one of the laser light sources from The laser beam is scanned onto a diffusing surface, and the driver is configured to control at least one modulation of the modulation of the laser source and the operation of the scanner such that the emitted light forms a desired light pattern And a power supply configured to provide power to the laser source such that the average spectral output power of the illumination device over a given period of time is substantially constant. By using a scanning laser projection unit in a lighting device, it is possible to produce 119930.doc 200813367 ι. The variable light for various lighting applications can be used simultaneously in the lighting space. The wearing = / time from the color on these scenes "Heiling decoration pattern can include - darker back hall, upper cedar line, a darker background on the color point, - ~ color point, in - white sound this旦卜夕" ', the white moon hall on the shirt color background, the color of the shirt on the shirt, etc. Base: = laser micro-projection system becomes technically feasible, high: because the laser source is very efficient, so Power efficiency. 4 I have a number of laser sources with different light emission spectra, projecting the useful spectrum, and producing a pattern that can change not only the shape and size but also the color. The number of light sources may be three, for example, 'red light, green light, and blue light, but it may be larger, and may include other color lights. By including many different colors (four), the color rendering index of the light-emitting device can be Increasing, and obtaining a wider range of color temperatures. In one embodiment, the color of the laser is red, blue, and green (traditionally used to scan a laser projection unit), but this does not limit the present Invention according to the present invention, at a given time period The average spectral output power is substantially constant. This enables the variable scanning pattern imaged by the laser projection system to be constant while the spectral light output of the system and the device itself used to illuminate the space. The expression "spectral output power" is intended to encompass the spectral content of light (ie, the emitted spectrum) as well as the intensity of light. By keeping these factors substantially constant, the illumination device does not cause shadow changes or color changes in the surrounding environment. Further, the flash of the emitted light is not perceived. The period of constant spectral output is preferably shorter than the response time of the human eye. This ensures that the change occurs within this shorter time scale without Eye 119930.doc 200813367 The light is perceived by the control system. The control color sensor and a feedback path are configured to output power to the spectrum. The feedback, wherein the power supply adjusts the feedback control spectral output power. This solution ensures that the prior spectrum output power is controlled based on the actual emitted light. Or 'the power supply is based on the laser output power of the spectrum. This predictive performance controls the optical system, and does not provide any feedback, but may be weak when changing conditions (such as temperature) that affect the performance of the light source. -- This: the face can be a reflective surface (such as a wall or ceiling), which is preferably coated with a phase-compartment coating, but it can also be transmissive so that light from the laser source passes through the The surface is transmissive. According to a specific embodiment, the diffusing surface is a single-exit window, the laser source is included in the housing. This design ensures that the laser light is not directly incident on the user's eye. The laser illumination unit is safe to use in any environment. The cover also protects sensitive lasers from the environment and also ensures that no laser light escapes from the device except for diffusion through the diffuse exit window. The drive can be equipped with a memory for storing various scan patterns. The step-driver has a round for receiving the scan pattern. This input can be a connector (such as USB, coffee 394, tandem bus or parallel bus), or can be - wireless receiver (such as radio (four) i0 freq bribe RF) receiver, infrared (IR) receiving , Bluetooth receiver or wireless LAN). 119930.doc 200813367 [Embodiment] FIG. 1 shows a light-emitting device according to a first embodiment of the present invention. The device comprises a cover 1, preferably a shape and material that makes it more attractive for use as a lighting application in a private or public environment. In the cymbal cover, a laser scanning unit 2, a laser scanning drive 3, and a power supply 4 are disposed. The power supply can have an internal power source (e.g., a battery pack (not shown)) or be connected to the AC mains 5. The laser scanning unit 2 comprises one or several laser sources 6, an optical element 7 (combining light from a krypton laser source into a beam of light) and a scanning mirror scanning the beam onto a surface). Such a laser scanning unit (also known as a microbeam) is well known in the art and is described in U.S. Patent No. 6,5,83,912, incorporated herein by reference. The laser scanning unit 2 can comprise several laser sources having different light emission spectra. For example, the laser scanning unit 2 can include a red light, a green light, and a blue laser light source to enable the generation of light throughout the visible spectrum. However, the number of light sources is not limited to three, and conversely, the light-emitting means may comprise a plurality of laser light sources having different wavelengths, thus providing a better color rendering index. The cover further has an opening 9, in which a diffusing exit window 1 (for example, made of a transparent plastic material) is mounted. The exit window is adapted to diffuse light from the laser scanning unit 2 such that the light system emitted from the outer side 10a of the exit window 10 is no longer harmful to the human eye and causes light from the lasers to Illuminate the entire space in all directions. 119930.doc 200813367 The driver 3 is connected to the continuation belt, such as the field force drawing unit 2, and is adapted to be supplied to the source of the field - a control signal 12 is used to modulate the source from the laser source 6, thereby enabling The generating driver of the various patterns on the diffusing exit window 1 can pre-program a number of different patterns stored in a vertical curve, ^^, ° body, 'hunting by the user-selector switch 13 Can be selected. Alternatively, or in combination, the drive may have an input 14 (eg, a deleted terminal or a (wireless) area smart connection) through which the pictorial information can be carried to the drive.
成用以向該驅動器3以及雷射掃描單 供應係調適成用以調整功率輸出， 該電力供應4係配置 元2提供電力。該電力 定。可選擇此時 ，例如，10毫秒 其中該光譜功率 一變化圖案進行 使得一給定時段期間之平均光譜保持恆 段，使其位於人眼之回應時間之等級内 内。藉由提供具有光譜穩定性之光（即， 藉由人感知為恆定），該發光裝置可使用 照明而不會在該環境上導致不希望的色效應。 在使用中，該雷射掃描單元2可藉由該驅動器加以控 制，並藉由將來自該（等）雷射光源6之經調變的光掃描至該 出射窗之内表面上來產生具有一給定圖案的光。離開該出 射窗之光將漫射，從而即使直接觀看出射窗丨〇也不再對人 眼造成危害’並將提供一空間之平滑照明。 依據一具體實施例，一控制系統提供光譜輸出功率之控 制，該控制系統包含色彩感測器15，其係配置成用以接收 由該雷射光源6發射的光；以及一回授路徑16， 关係配置 成用以將來自此等感測器15的資訊回授至該驅動器3及/或 119930.doc 200813367 電力供應4。因此，該電力供應4及/或驅動器3具有光譜輸 出回授，並係調適成用於基於此回授控制該發光裝置之光 譜輸出。此光學回授（例如）在LED發光系統中為吾人所熟 知，所以不再詳細說明。依據本發明之此具體實施例之與 該發光裝置相關的此控制系統之目的係，該控制系統可致 動該驅動器3以及電力供應4來調整該光譜光輸出功率，以 在一給定時段上保持恆定。The driver 3 and the laser scanning unit supply system are adapted to adjust the power output, and the power supply 4 is configured to provide power. The power is fixed. Alternatively, for example, 10 milliseconds, wherein the spectral power-variation pattern is performed such that the average spectrum during a given period of time remains constant for a period of time within the response time of the human eye. By providing spectrally stable light (i.e., constant by human perception), the illumination device can use illumination without causing undesirable color effects in the environment. In use, the laser scanning unit 2 can be controlled by the driver and generated by having the modulated light from the (s) laser source 6 scanned onto the inner surface of the exit window. The pattern of light. The light leaving the exit window will be diffused, so that even if the direct view of the exit window is no longer harmful to the human eye, it will provide a smooth illumination of the space. According to a specific embodiment, a control system provides control of spectral output power, the control system including a color sensor 15 configured to receive light emitted by the laser source 6; and a feedback path 16, The relationship is configured to feedback information from such sensors 15 to the drive 3 and/or 119930.doc 200813367 power supply 4. Thus, the power supply 4 and/or driver 3 has spectral output feedback and is adapted to control the spectral output of the illumination device based on this feedback. This optical feedback, for example, is well known in the LED lighting system and will not be described in detail. The purpose of the control system associated with the illumination device in accordance with this embodiment of the invention is that the control system can actuate the driver 3 and the power supply 4 to adjust the spectral light output power for a given period of time. keep constant.
熟習此項技術人士會意識到本發明絕非限於上述較佳具 體貝施例。相反地，可進行許多修改及變更而不脫離隨附 申請專利範圍之範疇。例如，該驅動器可係配置成用於不 僅控制光之调變而且控制該雷射掃描單元2之掃描。 進一步，本發明不限於具有一漫射出射窗的裝置。在一 可替換具體實施例中’該雷射掃描單元（包含雷射光源、 掃描器以及驅動器）係與該擴散器分離，並且其中該擴散 器係位於一空間内天花板及/或牆之一表面，較佳的係^ 其藉由一合適的塗層加以塗布。 【圖式簡單說明】 現在參考顯示本發明之一當箭鉍 、， 則車又佺具體實施例之附圖將 更詳細地說明本發明之此及其他方面。 圖1顯示依據本發明之一發弁驻 乂九表置之一具體實施例的示 意圖。 【主要元件符號說明】 [外罩 雷射掃描單元 119930.doc -10- 200813367 3 驅動器 4 電力供應 5 交流電幹線 6 雷射光源 7 光學元件 8 掃描鏡 9 開口 10 出射窗/漫射面 10a 出射窗之外側 12 控制信號 13 選擇器開關 14 輸入 15 色彩感測器 16 回授路徑 119930.doc - I]-Those skilled in the art will recognize that the present invention is in no way limited to the preferred embodiments described above. On the contrary, many modifications and changes can be made without departing from the scope of the appended claims. For example, the driver can be configured to control not only the modulation of light but also the scanning of the laser scanning unit 2. Further, the invention is not limited to devices having a diffuse exit window. In an alternative embodiment, the laser scanning unit (including a laser source, a scanner, and a driver) is separate from the diffuser, and wherein the diffuser is located on a surface of a ceiling and/or wall in a space Preferably, it is coated by a suitable coating. BRIEF DESCRIPTION OF THE DRAWINGS This and other aspects of the present invention will now be described in more detail with reference to the accompanying drawings in which FIG. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of one embodiment of a singular arrangement in accordance with one aspect of the present invention. [Description of main component symbols] [Shell laser scanning unit 119930.doc -10- 200813367 3 Driver 4 Power supply 5 AC mains 6 Laser light source 7 Optical element 8 Scanning mirror 9 Opening 10 Exit window / diffusing surface 10a Exit window Outside 12 Control Signal 13 Selector Switch 14 Input 15 Color Sensor 16 Feedback Path 119930.doc - I]-