201144663 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種結合日光及人造光之照明系統。 【先前技術】 在許多環境中，人造光源整個白天（且甚至夜晚）恆定發 光。雖然在一天的許多時間内可獲取日光，但習知地僅經 由窗戶或類似物獲得日光。此外，習知地可期望容許儘可 能多之曰光進入一空間（例如）以影響舒適感。通常，在醫 院及看護環境中注意到所感知日光之積極效果。 近來’已開發基於結合之人造光及日光的照明裝置以更 有效率地使用可獲取之曰光並增加不同環境中之舒適感。 US 20(M/0187908中描述一混合照明分佈系統之一實例。 然而，在US 2004/0187908所揭示之系統中，人造光源之 光分佈與曰光之光分佈不匹配，使得當修改相對強度時發 生陰影閃爍。再者，US 2004/0187908中之控制將受非所 欲因素（諸如進入窗戶之日光）干擾。因此，存在改良餘 地。 【發明内容】 本發明之-目的在於提供一種至少部分減輕以上所提及 缺點之系統。 藉由結合日光及人造光之一照明系統而達 ，該照明系統包括：一光學元件，其用於 根據本發明， 成此及其他目的 Ί人 混合光；至少一光纖，其經配置以自一外部環境接 並將該日光耦合至該光學元件中；及至少一光源 152749.doc 201144663 置以將人造光發射至該光學元件中，其中該光學元件係經 調適以混合f自該至少一光纖及該至少-光源之光並發射 混合光以照売一室内環境。 此處，「人造光」意指包含自-人造照明系統(諸如電室 内照明系統）發射之任何光。 此處，「至少-光纖」意指可用於容許在較長或較短距 離中傳輸所收集日光之光纖通信的任何光纖。複數個光纖 可配置成一光纖集束以形成一光纖電纔。 此處，t學70件」意指其中混合來自不同光源之光（例 如藉由反射）並進一步發射為一單—光束的一元件。因 此’光學^件作為-單—光源，但光起初自不同源發出。 本發明係基於以下理解：藉由在—光學元件(自該光學 元件發射混合光）中混合人造光及日光，可由—觀察者感 知具有-單一源位置之一光束。此導致：雖然此處存在兩 個原始光源'日光及人造光，但即使改變該兩個原始光源 之間之相對強度’亦可能相對地不影響藉由照明系統之輸 出光束而達成之陰影圖像，在由系統照亮之空間中可見該 陰影圖像H耗照⑽統經受（例如）光譜或通量之 改Μ ’但由於自該兩個光源發射之光係經混合並輸出為來 自-單-源位置’所以可最小化閃爍效應，因此獲得該兩 個光源之共同陰影位置。 再者，光學元件可包括由一部分反射壁（亦即具有反射 特性及透射特性兩者）圍封之_隔室，其中經圍封隔室作 為一混合腔室。藉由該壁之反射特性，可反射並混合人造 152749.doc 201144663 光及日光，而該壁之光透射特性容許混合光自該混合腔室 透射。作為一實例，該壁之部分可具反射性，而該壁之其 他部分可具透射性。替代地，由具有不同折射率之介質之 間之一界面形成該壁以容許某一入射角範圍内之全内反 射。 此外，光學元件可進一步包括環繞混合腔室之一環形光 導，該光導具有面向混合腔室並經配置以自混合腔室接收 混合光之一内部耦合輸入（in_c〇upIing)表面及經配置以發 射混合光之一發光表面，其中該光導係經調適以使該混合 光跨光射出（light-exit)表面而分佈。 環形光導可分佈發射至其中之光，且同時將光輸出為穿 過光導之光射出表面的一單一光束。混合腔室可作為沿全 部方向將光傳輸至光導中之一單一中心配置光源。 此外’環形光導可朝其周邊漸縮，此可改良所發射光之 分佈。 該系統可包括一控制器’其係連接至光源並經配置以基 於有關混合光及/或日光之資訊而控制人造光之性質以獲 得一所需照明。此控制可基於各種類型之回饋及/或前 饋’且可用來提供一恆定且穩定之照明。 根據一實例’照明系統可包括配置於光學元件中之一回 饋光感測器；其中控制器係連接至該感測器並經組態以回 應於光學元件中所偵測混合光之回饋而控制人造光之性 質。因此’感測器及控制器提供回饋控制，其中偵測混合 光且根據所偵測條件而控制光源。例如，所偵測混合光條 152749.doc 201144663 件可因日光傳輸之改變而改變’此可取決於(例如)天氣變 化、或白天的時間或影響日光至照明系統之傳輸的其他情 况。所需之混合光條件可（例如）保持值定或高於一所選之 取小位準。以此方式，當所傳輸之日光照明條件變動時， 可達成人造光之一準確且相對無誤之增加或減少。 替代地m统可包括經配置以連接至光纖之一前饋 光感測器，該前饋光感測器用於偵測由光纖引導之日光； 其中控制器係連接至該前饋感測器並經組態以回應於所偵 測日光，前饋而控制人造光之性質。因此，可將該感測器 及控制器提供至系統以獲得前饋控制，其中偵測傳輸至照 明系統之曰光且根據所偵測之日光條件而控制至少—光 源。光源輸出可（例如）經控制以補償減少之日光，進而保 持-恨定混合光輸出或至少保持—最小混合光輸出。 前饋感測器可經配置則貞測由—單_光纖傳輸之光，藉 此該單-光纖可僅詩此用$，且其餘光纖用於將日光傳 輸至系統中。替代地，前饋感測器可鄰近於該光纖之一彎 曲處而配置以偵測在該彎曲處自該光纖逸出之光β該光纖 可為照明系統令之唯一光纖或複數個光纖之一者。替代 地，感測器可經配置用於偵測自複數個光纖之一共同彎曲 點逸出之光，§一光纖集束中存在複數個光纖時此可為有 利，因為當自全部光纖之一共同彎曲點逸出之光被偵測 時，導致錯誤控制之該光纖集束之不均勻性被減少。 此外，控制器可經組態以控制人造光之性質以補償由 (若干）感測器偵測之光之通量、色溫及光譜含量之至少一 152749.doc 201144663 之-改變。在某些應用中’控制器可足以偵測並補償光 通量之變動’但在其他應用中，較佳為利用一更高級控 制，其令亦補償色溫。例如，一值定色溫可為有利，或至 少一光源之色溫可經控制以獲得（例如）比由當前日光條件 達成之色溫更溫暖的—白色色溫。或者，系'統可經控制以 發射具有含_飽和分量之—色點之光以（例如）獲得除白色 ，卜之其他色彩替代地’可藉㈣測並補償混合光或所 傳輸日光（取決於是否應用回饋或前饋控制）之光譜含量之 改！而提供甚至更高級控制。因此，感測器可（例如）為一 通量感測器、-RGB光感測器或—光譜感測裝置。 替代地’可由-制者執行人造光之控制，藉此該使用 者可選擇以（例如）調整所發射光之色溫。 至少一光源可為任何光源，諸如一固態光源、一燈泡或 一螢光光源。 較佳地，至少一光源可為—固態光源，因為可以諸多方 式控制固態光源’諸如控制色彩。例如，言亥固態光源可為 一發光二極體（LED)或一有機發光二極體（〇LED)。當所傳 輸日光之照明條件存在變動_ ’可藉由使用㈣或〇led 而達成人造光之甚至更準確且平順之接收（take〇ver)。 應注意本發明係關於技術方案中所列舉特徵之所有可能 組合。 【實施方式】 現將參考顯示本發明之（若干）實施例的附圖而更詳細地 描述本發明之此及其他態樣。 152749.doc 201144663 本發明之照明系統可配置於各種外觀之發光體中。然 而’圖1至圖2中所描繪之發光體為環形，且可(例如)安裝 於天花板中或一壁上。 自照明系統la至lb輸出之光自兩個不同源(日光源及人 造源）發出。然:而，來自該兩個源之光係藉由—光學元件 10、13而混合並被輸出為由照明系統輸出之一結合光。 -光導13係經配置以輸出經結合之日光及人造光。在所 繪示實例甲，該光導13係形成為具有一内壁19及外壁29之 -環。該光導13進-步包括—光反射表面15(諸如一鏡面 層）及相對於該光反射表面之一光射出表面16，該等表面 15、16係由該内壁19連接以形成該光導13之一光進入表面 14。再者，該光導13係經漸縮，使得在該環形光導13之圓 周處該光反射表面15與該光射出纟面16之間之距離比在該 光進入表面14處的短，且藉此該外壁29比該内壁短。此 處，該光射出表面16係配置於—單—平面中。例如，該光 導之核心可由玻璃或任何光學聚合物（諸如聚曱基丙烯酸 曱酯，即PMMA)製成。 此外，提供不同折射率之光學構件，以使此等折射率與 光導13之折射率之間的關係成為透過光射出表面丨6自照明 系統外部耦合（out-coupling)光束18之控制之一部分。此 處，一第一光學構件17a係經配置而與光導13之光射出表 面16光學接觸，且一第二光學構件nb係經配置而與光導 13之光反射表面15光學接觸。例如，該第一光學構件 可為一流體，且該第二光學構件l7b可為空氣。此外，在201144663 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to an illumination system incorporating daylight and artificial light. [Prior Art] In many environments, artificial light sources are constantly emitted throughout the day (and even at night). Although daylight is available for many days of the day, it is conventional to obtain daylight only through windows or the like. Moreover, it is conventionally desirable to allow as much light as possible to enter a space (e.g., to affect comfort). Often, the positive effects of perceived sunlight are noted in hospitals and care settings. Recently, lighting devices based on artificial light and daylight have been developed to more efficiently use the available light and increase the comfort in different environments. An example of a hybrid illumination distribution system is described in US 20 (M/0187908. However, in the system disclosed in US 2004/0187908, the light distribution of the artificial light source does not match the light distribution of the dawn, such that when the relative intensity is modified Shading flicker occurs. Furthermore, the control in US 2004/0187908 will be disturbed by undesired factors such as daylight entering the window. Therefore, there is room for improvement. [Invention] It is an object of the present invention to provide an at least partial mitigation. The system of the above mentioned disadvantages is achieved by combining illumination system of daylight and artificial light, the illumination system comprising: an optical element for mixing light for the purpose of this and other purposes in accordance with the present invention; at least one An optical fiber configured to interface from an external environment and couple the daylight into the optical component; and at least one light source 152749.doc 201144663 configured to emit artificial light into the optical component, wherein the optical component is adapted Mixing f from the at least one optical fiber and the at least-source light and emitting mixed light to take care of an indoor environment. Here, "artificial light" means - any light emitted by an artificial lighting system, such as an indoor lighting system. Here, "at least - fiber" means any fiber that can be used to allow fiber optic communication to transmit collected sunlight over longer or shorter distances. The fiber can be configured as a fiber bundle to form a fiber. Here, "70" means a component in which light from different sources is mixed (for example, by reflection) and further emitted as a single beam. The optical element acts as a single-light source, but the light is initially emitted from a different source. The invention is based on the understanding that by mixing artificial light and daylight in an optical element (from which the mixed light is emitted), the observer can Perceiving a beam with a single source location. This results in: although there are two original sources 'daylight and artificial light here, even changing the relative intensity between the two original sources' may not affect lighting by relatively The shadow image achieved by the output beam of the system, visible in the space illuminated by the system, the shadow image H (10) is subjected to (for example) spectrum or flux Changed 'but since the light emitted from the two sources is mixed and output as from the -single-source position', the flicker effect can be minimized, thus obtaining the common shadow position of the two sources. Furthermore, the optical components can Included is a compartment surrounded by a portion of the reflective wall (i.e., having both reflective and transmissive properties), wherein the enclosed compartment acts as a mixing chamber. By virtue of the reflective properties of the wall, the artificial 152749 can be reflected and mixed. .doc 201144663 Light and daylight, and the light transmission characteristics of the wall allow mixed light to be transmitted from the mixing chamber. As an example, portions of the wall may be reflective while other portions of the wall may be transmissive. The wall is formed by an interface between media having different indices of refraction to allow for total internal reflection over a range of incident angles. Additionally, the optical component can further include an annular light guide surrounding the mixing chamber, the light guide having an internal coupling input (in_c〇upIing) surface facing the mixing chamber and configured to receive mixed light from the mixing chamber and configured to emit One of the light-emitting surfaces is mixed, wherein the light guide is adapted to distribute the mixed light across a light-exit surface. The annular light guide distributes the light emitted thereto and simultaneously outputs the light as a single beam that passes through the light exit surface of the light guide. The mixing chamber acts as a single centrally-configured source that transmits light to all of the light guides in all directions. In addition, the annular light guide can taper toward its periphery, which improves the distribution of the emitted light. The system can include a controller that is coupled to the light source and configured to control the properties of the artificial light based on information about the mixed light and/or daylight to obtain a desired illumination. This control can be based on various types of feedback and/or feedforward' and can be used to provide a constant and stable illumination. According to an example, the illumination system can include a feedback light sensor disposed in the optical component; wherein the controller is coupled to the sensor and configured to control in response to feedback of the detected mixed light in the optical component The nature of artificial light. Thus the 'sensor and controller provide feedback control in which the mixed light is detected and the light source is controlled based on the detected conditions. For example, the detected mixed light strip 152749.doc 201144663 may change due to changes in daylight transmission. This may depend, for example, on weather changes, or time of day or other conditions that affect the transmission of daylight to the lighting system. The desired mixed light conditions can, for example, be maintained at or above a selected small level. In this way, an accurate and relatively error-free increase or decrease of one of the artificial light can be achieved when the transmitted daylight illumination conditions change. Alternatively, the system includes a feedforward light sensor configured to connect to the optical fiber, the feedforward light sensor for detecting sunlight guided by the optical fiber; wherein the controller is coupled to the feedforward sensor and It is configured to control the nature of the artificial light in response to the detected daylight and feedforward. Thus, the sensor and controller can be provided to the system for feedforward control wherein the light transmitted to the illumination system is detected and at least the light source is controlled based on the detected daylight conditions. The light source output can, for example, be controlled to compensate for the reduced daylight, thereby maintaining a hate mixed light output or at least maintaining a minimum mixed light output. The feedforward sensor can be configured to detect light transmitted by a single-fiber, whereby the single-fiber can only be used for $, and the remaining fibers are used to transfer daylight into the system. Alternatively, the feedforward sensor can be configured adjacent to a bend of the fiber to detect light escaping from the fiber at the bend. The fiber can be one of the only fiber or a plurality of fibers of the illumination system. By. Alternatively, the sensor can be configured to detect light escaping from a common bending point of one of the plurality of fibers, which can be advantageous when there are multiple fibers in a fiber bundle, because when one of the fibers is common When the light escaping from the bending point is detected, the unevenness of the fiber bundle resulting in erroneous control is reduced. Additionally, the controller can be configured to control the properties of the artificial light to compensate for at least one of the flux, color temperature, and spectral content of the light detected by the sensor(s). In some applications the 'controller may be sufficient to detect and compensate for variations in luminous flux' but in other applications it is preferred to utilize a higher level of control which also compensates for color temperature. For example, a set color temperature may be advantageous, or at least the color temperature of a light source may be controlled to obtain, for example, a white color temperature that is warmer than the color temperature achieved by current daylight conditions. Alternatively, the system can be controlled to emit light having a color point containing a _saturation component to, for example, obtain a white color, and the other colors can be used to measure and compensate for the mixed light or transmitted sunlight (depending on Change the spectral content of whether to apply feedback or feedforward control)! And provide even more advanced control. Thus, the sensor can be, for example, a flux sensor, an RGB light sensor, or a spectral sensing device. Alternatively, control of the artificial light can be performed by the maker, whereby the user can choose to, for example, adjust the color temperature of the emitted light. The at least one light source can be any light source, such as a solid state light source, a light bulb, or a fluorescent light source. Preferably, the at least one light source can be a solid state light source because the solid state light source can be controlled in a number of ways, such as controlling color. For example, the solid-state light source can be a light emitting diode (LED) or an organic light emitting diode (〇LED). When there is a change in the lighting conditions of the transmitted sunlight _ ', it is possible to achieve even more accurate and smooth reception of artificial light by using (4) or 〇led. It should be noted that the present invention pertains to all possible combinations of the features recited in the technical solutions. [Embodiment] This and other aspects of the present invention will now be described in more detail with reference to the accompanying drawings in which <RTIgt; 152749.doc 201144663 The illumination system of the present invention can be deployed in illuminators of various appearances. However, the illuminators depicted in Figures 1 through 2 are annular and can be mounted, for example, in a ceiling or on a wall. Light from the illumination system la to lb is emitted from two different sources (day source and source). However, the light from the two sources is mixed by the optical elements 10, 13 and output as light combined by one of the illumination system outputs. - Light guide 13 is configured to output combined daylight and artificial light. In the illustrated example A, the light guide 13 is formed as a ring having an inner wall 19 and an outer wall 29. The light guide 13 further includes a light reflecting surface 15 (such as a mirror layer) and a light exit surface 16 relative to the light reflecting surface, the surfaces 15, 16 being joined by the inner wall 19 to form the light guide 13 A light enters the surface 14. Moreover, the light guide 13 is tapered such that the distance between the light reflecting surface 15 and the light exiting surface 16 at the circumference of the annular light guide 13 is shorter than at the light entering surface 14, and thereby The outer wall 29 is shorter than the inner wall. Here, the light exit surface 16 is disposed in a - single plane. For example, the core of the light guide can be made of glass or any optical polymer such as poly(decyl methacrylate, PMMA). In addition, optical members of different refractive indices are provided such that the relationship between these indices of refraction and the index of refraction of the light guide 13 becomes part of the control of the out-coupling beam 18 from the illumination system through the light exit surface 丨6. Here, a first optical member 17a is configured to be in optical contact with the light exit surface 16 of the light guide 13, and a second optical member nb is configured to be in optical contact with the light reflecting surface 15 of the light guide 13. For example, the first optical member can be a fluid and the second optical member 17b can be air. In addition, in
152749.doc -9- 201144663 相對於光導13之該第一光學構件17 a之相對側面上，一結 構化重定向層27(諸如一所謂之重定向箔）係經配置而與該 第一光學構件17a光學接觸。該重定向層可由聚碳酸醋 (PC)製成。 光導13之内壁19形成一混合腔室10之一壁，該混合腔室 係經調適以混合自人造光源及日光源放射之光。藉由圍封 複數個光纖之一光纖電纜11而將日光傳送至該混合腔室1〇 中，而人造光源於經配置以將光發射至該混合腔室10中之 光源12(此處為LED)。該光纖電徵11於此處進入，且該等 光源12係經配置以自該混合腔室1 〇之相同表面發光。 在所繪示實例中，壁19具部分反射性（具有反射性質及 透射性質兩者），亦即壁19之部分可具反射性而壁19之其 他部分可具透射性。替代地，壁19係由具有不同折射率之 介質之間之一界面形成，以容許某一入射角範圍内之全内 反射。因此，自混合腔室10之壁19輸出經結合之日光及人 造光之混合光’如同該混合光係自一單一光源發射。亦 即’壁19係經調適以將來自混合腔室1〇之光全向發射至環 形光導13中。如所提及，壁19相應地作為至光導13之光進 入表面14。 藉由光反射表面15之反射及根據光學構件17a至17b之折 射率與光導13之折射率之間之關係的反射而透過光導13分 佈經由光進入表面14而進入光導13之混合光。於光射出表 面16處外部耦合光，藉由重定向層27而進一步導引光。相 應地’光係輸出為穿過光導13之光射出表面16的經結合之 152749.doc 201144663 日光及人造光之一相對均勻光輸出束18，但光起初自不同 源放射。 再者，在圖1中，一感測器20係配置於混合腔室中且一 控制器21係連接至感測器2〇及光源丨2。 控制器可經配置以控制由光源12輸出之光，以確保一所 需之結合光輸出。可預設或由一使用者透過一合 ,θ ω ^力面而 k供所需光輸出。 在操作中，感測器2〇偵測混合腔室1〇中之混合光條件以 偵測待由系統對於回饋控制所使用之位準。例如， 歡/則器 2〇可偵測光之通量及/或色溫。藉由所偵測之位準，控制 器控制光源12(例如）以補償通量及/或色溫之一減少或增 加。通量之一減少可（例如）取決於雲已遮蓋太陽且所傳輸 之曰光通量相應減少。若期望一恆定通量，則來自光源丄2 之輸出係經控制以補償通量之整體減少，或若一最小通量 係足夠，則控制器控制光源12以在偵測到一減少之時間期 間保持混合光之預定最小通量。關於色溫，控制器可根據 一預定目標色點而控制光源12以發射（例如）比混合光中所 4貞測光更溫暖之一白光》以此方式，無論白天之時間或季 節變動如何，照明系統總是可發射具有相同色溫之光。在 某些應用中，可期望具有一飽和目標色點之一光輸出，以 使照明系統發射某一色彩之光或發射仍被感知為白光但具 有一飽和分量之一色彩之光。替代地，偵測並控制混合光 中之光譜含量。 替代地或另外，另一感測器22可經配置以偵測自專用於 152749.doc 201144663 此用途之一單一光纖23傳輸之日光。此導致亦能夠由前饋 控制來控制系統，參考圖2而對此更詳細地加以描述。該 感測器22可偵測由全部可用光纖貢獻之（例如）通量、色溫 或光譜含量並將資訊轉送至控制器21，該控制器21繼而回 應於所彳貞測資訊而控制光源12。 雖然回應於所傳輸日光之當前日光條件（而非當前混合 光條件）而執行控制，但如藉由使用上述回饋控制，可執 订使用前饋控制的類似控制。亦即，可執行控制以保持 (例如）通量之一恆定位準或一最小位準。另外或替代地， 可控制色溫或光譜含量。 圖2中所描繪之照明系統lb係類似於圖1中所描繪之照明 系統。然而，在圖2中，感測器22係配置於一替代位置處 以债測所傳輸曰&之條件，則吏系統能夠由前館控制來控 制。此配置係基於：若一光纖為彎曲則雜散光自該光纖逸 出因此 感測器可鄰近於一光纖之一彎曲處配置以偵 測所傳輸光之當前日光條件。此處，光纖電镜丨丨中所包括 之光纖相對於彼此、向外朝向混合腔室1〇之壁19而分離且 均勻地彎曲，以將光全向發射至混合腔室10中。相應地， 光纖之終端點係環形地配置於混合腔室10之壁19内側。再 者’光源12係環形地配置於光纖終端點之間。感測器22係 中心地配置於-封閉區内(其中不存在人造光)之光纖之彎 曲處下方。因& ’感測器22可同時偵測自全部可用光纖逸 出之經結合雜散光且不受人造光干擾。 圖3中繪示用於前饋控制之另一感測器配置。此處，於 152749.doc 201144663 光纖電纜11上之-位置25處，複數個光纖係均句彎曲成一 圓盤形狀以能夠同時偵測自全部可用光纖逸出之經結合雜 散光。-感測器22係中心地配置於該圓盤内側以偵測來自 該感測器22上方及下方之全部光纖之共同彎曲點的雜散 光。 替代地，首先將光纖變平，接著將光纖彎曲，藉此沿全 部光纖之彎曲處配置感測器。又一替代方案為彎曲整個光 纖集束11並將感測器配置於彎曲處之前方，此在一些應用 中已足夠但自光纖逸出之光在量測點處並非完全均質。感 測器亦可經配置而足以偵測接近於一單一光纖之一彎曲點 的光條件。或者，一單一光纖可專用於偵測所傳輸曰光。 替代地，感測器可配置於一日光收集系統中以總在此階段 偵測所接收之日光。 雖然已參考本發明之若干特定例示性實施例而描述本發 明，但熟習此項技術者將明白許多不同改變、修改及類似 者。例如，混合腔室可將光發射至任何其他類型之光導 中，可存在配置於混合腔室中之一單一光源，或光源可為 除LED以外之其他類型。此外，光學構件可為經調適以混 合來自不同源之光並將光發射為來自該等不同源人 ' 、、’〇 口 光的任何構件。 另外，熟習此項技術者在實踐本發明時可自圖式、揭示 内容及隨附申請專利範圍之一研究而理解並實現對所揭示 實施例之變動。在申請專利範圍中，「包括」不排除其他 元件或步驟，且不定冠詞「一」不排除複數個。一單—處 152749.doc -13- 201144663 其他單元可實現申請專利範圍中所列舉之若干項目 的功月匕。於互不相同之附屬請求項中列舉某些措施之純粹 事實並不表示此等措施之組合無法有利使用。 【圖式簡單說明】 圖1示意性顯示根據本發明之一實施例之一照明系統； 圖2示意性顯示根據本發明之另一實施例之一照明系 統， 圖3示意性顯示關於前饋控制之一例示性感測器配置。 【主要元件符號說明】 1 a 照明系統 lb 照明系統 10 光學元件/混合腔室/隔室 11 光纖電纜/光纖/光纖集束 12 光源 13 光學元件/光導 14 光進入表面 15 光反射表面 16 光射出表面 17a 第一光學構件 17b 第二光學構件 18 光束 19 内壁 20 感測器/回饋光感測器 21 控制器 152749.doc •14- 201144663 22 感測器/前饋光感測器 23 光纖 25 光纖電纜上之一位置 27 結構化重定向層 29 外壁 -15- 152749.doc152749.doc -9- 201144663 A structured redirection layer 27 (such as a so-called redirecting foil) is configured with the first optical member on opposite sides of the first optical member 17a relative to the light guide 13 17a optical contact. The redirecting layer can be made of polycarbonate (PC). The inner wall 19 of the light guide 13 defines a wall of a mixing chamber 10 that is adapted to mix light radiated from the artificial source and the day source. Daylight is delivered into the mixing chamber 1 by enclosing a fiber optic cable 11 of a plurality of fibers, and the artificial light source is configured to emit light into the source 12 of the mixing chamber 10 (here LED ). The fiber optic signature 11 enters here and the light sources 12 are configured to illuminate from the same surface of the mixing chamber 1 . In the illustrated example, wall 19 is partially reflective (both having both reflective and transmissive properties), i.e., portions of wall 19 may be reflective and other portions of wall 19 may be transmissive. Alternatively, wall 19 is formed by an interface between media having different indices of refraction to allow for total internal reflection over a range of incident angles. Thus, the mixed light of the combined daylight and artificial light is output from the wall 19 of the mixing chamber 10 as the mixed light system emits from a single light source. That is, the 'wall 19 is adapted to emit light from the mixing chamber 1 omnidirectionally into the annular light guide 13. As mentioned, the wall 19 acts as a light into the surface 14 corresponding to the light guide 13. The mixed light entering the light guide 13 is transmitted through the light entering surface 14 through the light guide 13 by reflection of the light reflecting surface 15 and reflection of the relationship between the refractive index of the optical members 17a to 17b and the refractive index of the light guide 13. The light is externally coupled to the surface 16 of the light exiting surface, and the light is further guided by the redirecting layer 27. Correspondingly, the light output is a relatively uniform light output beam 18 of one of 152749.doc 201144663 daylight and artificial light that passes through the light exit surface 16 of the light guide 13, but the light is initially emitted from a different source. Furthermore, in Fig. 1, a sensor 20 is disposed in the mixing chamber and a controller 21 is coupled to the sensor 2 and the light source 丨2. The controller can be configured to control the light output by source 12 to ensure a desired combined light output. It can be preset or provided by a user through a combination of θ ω ^ force surface k for the desired light output. In operation, the sensor 2 detects the mixed light conditions in the mixing chamber 1〇 to detect the level to be used by the system for feedback control. For example, the Joy/Terminal 2〇 can detect the flux and/or color temperature of light. The controller controls the source 12, for example, to compensate for a decrease or increase in flux and/or color temperature by the detected level. One reduction in flux can, for example, depend on the cloud having covered the sun and the corresponding amount of transmitted light flux being correspondingly reduced. If a constant flux is desired, the output from source 丄2 is controlled to compensate for the overall decrease in flux, or if a minimum flux is sufficient, the controller controls source 12 to detect a reduced time period Maintain a predetermined minimum flux of mixed light. Regarding the color temperature, the controller can control the light source 12 to emit, for example, one of the warmer white light than the four meters in the mixed light according to a predetermined target color point. In this way, regardless of the time of day or season, the lighting system Light with the same color temperature can always be emitted. In some applications, it may be desirable to have a light output of a saturated target color point such that the illumination system emits light of a certain color or emits light that is still perceived as white but has a color of one of the saturated components. Alternatively, the spectral content in the mixed light is detected and controlled. Alternatively or in addition, another sensor 22 can be configured to detect daylight transmitted from a single fiber 23 dedicated to one of the uses of 152749.doc 201144663. This results in a system that can also be controlled by feedforward control, which is described in more detail with reference to Figure 2. The sensor 22 can detect, for example, the flux, color temperature, or spectral content contributed by all available fibers and forward the information to the controller 21, which in turn controls the source 12 in response to the detected information. Although control is performed in response to the current daylight conditions of the transmitted daylight (rather than the current mixed light condition), similar control using feedforward control can be enforced, as by using the feedback control described above. That is, control can be performed to maintain, for example, one of the flux constant levels or a minimum level. Additionally or alternatively, the color temperature or spectral content can be controlled. The illumination system lb depicted in Figure 2 is similar to the illumination system depicted in Figure 1. However, in Fig. 2, the sensor 22 is disposed at an alternate location to transmit the conditions of the transmission & the system can be controlled by the front hall control. This configuration is based on the fact that stray light escapes from the fiber if it is curved so that the sensor can be placed adjacent to a bend in one of the fibers to detect the current daylight conditions of the transmitted light. Here, the fibers included in the fiberoptic cymbal are separated and uniformly curved with respect to each other, toward the wall 19 of the mixing chamber 1 to emit omnidirectional light into the mixing chamber 10. Correspondingly, the terminal points of the optical fiber are arranged annularly inside the wall 19 of the mixing chamber 10. Further, the light source 12 is disposed in a ring shape between the end points of the optical fibers. The sensor 22 is centrally disposed below the bend of the fiber in the enclosed area (where artificial light is not present). The &' sensor 22 can simultaneously detect the combined stray light that escapes from all available fibers and is not interfered with by artificial light. Another sensor configuration for feedforward control is illustrated in FIG. Here, at position 25 of the 152749.doc 201144663 fiber optic cable 11, a plurality of fiber optic systems are bent into a disk shape to simultaneously detect the combined stray light that escapes from all available fibers. - The sensor 22 is centrally disposed inside the disk to detect stray light from a common bending point of all of the fibers above and below the sensor 22. Alternatively, the fiber is first flattened and then the fiber is bent, thereby configuring the sensor along the bend of the entire fiber. Yet another alternative is to bend the entire fiber bundle 11 and place the sensor in front of the bend, which is sufficient in some applications but the light that escapes from the fiber is not completely homogeneous at the measurement point. The sensor can also be configured to detect light conditions that are close to a bend point of a single fiber. Alternatively, a single fiber can be dedicated to detecting the transmitted light. Alternatively, the sensor can be configured in a daylight collection system to detect the received daylight at this stage. While the invention has been described with reference to the specific embodiments of the embodiments of the present invention For example, the mixing chamber can emit light into any other type of light guide, there can be one single source disposed in the mixing chamber, or the light source can be of a type other than LED. In addition, the optical member can be any member that is adapted to mix light from different sources and emit light as light from the different sources. In addition, variations of the disclosed embodiments can be understood and effected by those skilled in the <RTIgt; In the scope of patent application, "comprising" does not exclude other elements or steps, and the indefinite article "a" does not exclude the plural.一单—处 152749.doc -13- 201144663 Other units can realize the merits of several items listed in the scope of patent application. The mere fact that certain measures are recited in mutually different subclaims does not mean that the combination BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 schematically shows an illumination system according to an embodiment of the present invention; FIG. 2 schematically shows an illumination system according to another embodiment of the present invention, and FIG. 3 schematically shows information about feedforward control. One illustrates a sensor configuration. [Main component symbol description] 1 a Lighting system lb Lighting system 10 Optical component / mixing chamber / compartment 11 Fiber optic cable / fiber / fiber bundle 12 Light source 13 Optical component / light guide 14 Light entering surface 15 Light reflecting surface 16 Light emitting surface 17a First optical member 17b Second optical member 18 Light beam 19 Inner wall 20 Sensor/feedback light sensor 21 Controller 152749.doc • 14- 201144663 22 Sensor/feedforward light sensor 23 Fiber 25 Fiber optic cable Upper one position 27 structured redirection layer 29 outer wall -15- 152749.doc