TW201304209A - Phosphor-enhanced lighting device, retrofit light bulb and light tube with reduced color appearance - Google Patents
Phosphor-enhanced lighting device, retrofit light bulb and light tube with reduced color appearance Download PDFInfo
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本發明係關於包括有機發光材料之磷光體增強照明裝置。 The present invention relates to a phosphor-enhanced illumination device comprising an organic light-emitting material.
公開專利申請案WO 2010/116294揭示磷光體增強光源之實施例，其中具有一層無機發光材料及一層有機發光材料之堆疊配置為所謂直接磷光體組態或所謂遠端磷光體組態。在直接磷光體組態中，不同發光材料之層之堆疊直接施加在光源之發光表面之頂部上。在遠端磷光體組態中，在光源之發光表面與發光材料層堆疊之間存在間隙，換言之，發光材料層堆疊配置為與光源相距特定距離。 The disclosed patent application WO 2010/116294 discloses an embodiment of a phosphor-enhanced light source in which a stack configuration having a layer of phosphor and a layer of organic luminescent material is a so-called direct phosphor configuration or a so-called remote phosphor configuration. In a direct phosphor configuration, a stack of layers of different luminescent materials is applied directly on top of the light emitting surface of the source. In the remote phosphor configuration, there is a gap between the light emitting surface of the light source and the stack of luminescent material layers, in other words, the luminescent material layer stack is configured to be at a specific distance from the light source.
所述專利申請案之實施例之發光層堆疊具有配置在觀看者看向磷光體增強光源之層堆疊之一側上之有機發光材料層。無機發光材料層配置在最靠近光源之發光表面之層堆疊之一側上。有機發光材料層通常相對透明，因為有機發光分子本質透明。觀看者未看見有機發光材料層之色彩。但是，無機發光材料層中之無機發光粒子充當散射材料並在所有方向上反射光。因此，若來自周圍環境之光照射在發光材料上，則無機發光材料之吸收光譜中之一些光被吸收，且未吸收之光被反射及/或散射，其因此具有作為無機發光材料之吸收光譜之色彩之互補色彩之色彩。此互補色彩被看向發光層堆疊之觀看者看見。此稱作「色彩外觀」，其意謂層表現為具有特定色彩。在許多應用中，無 需具有色彩外觀，因為會使觀看者感覺磷光體增強光源具有由無機發光材料產生之光之特定色彩。舉例而言，若特定無機發光材料具有藍色範圍中之吸收光譜，則特定有機發光材料之色彩外觀可為橙色/黃色。 The luminescent layer stack of an embodiment of the patent application has an organic luminescent material layer disposed on one side of a layer stack of a viewer looking towards a phosphor enhanced light source. The phosphor layer is disposed on one side of the layer stack closest to the light emitting surface of the light source. The organic luminescent material layer is generally relatively transparent because the organic luminescent molecules are substantially transparent. The viewer did not see the color of the layer of organic light-emitting material. However, the inorganic luminescent particles in the phosphor layer act as a scattering material and reflect light in all directions. Therefore, if light from the surrounding environment is irradiated on the luminescent material, some of the absorption light of the inorganic luminescent material is absorbed, and the unabsorbed light is reflected and/or scattered, which thus has an absorption spectrum as the inorganic luminescent material. The color of the complementary color of the color. This complementary color is seen by the viewer looking at the stack of illuminating layers. This is called "color appearance", which means that the layer behaves as having a specific color. In many applications, no A color appearance is required because it would make the viewer feel that the phosphor-enhanced light source has a particular color of light produced by the phosphor. For example, if a particular phosphor has an absorption spectrum in the blue range, the color appearance of the particular organic luminescent material can be orange/yellow.
此外，所述專利申請案之光源需發射具有通常在2700至6000開氏溫度(Kelvin)之範圍中之相關色溫之光且通常具有發射藍光之發光二極體(LED)。為獲得此相關色溫，需將相對較大量之藍光轉換為較長波長之光。藍光至較長波長之光之轉換藉由無機發光材料執行且因此需使用相對較大量之無機發光材料，其導致較強色彩外觀。 In addition, the light source of the patent application is required to emit light having a correlated color temperature typically in the range of 2700 to 6000 Kelvin and typically has a blue light emitting diode (LED) that emits blue light. To achieve this correlated color temperature, a relatively large amount of blue light is converted to a longer wavelength light. The conversion of blue to longer wavelength light is performed by the phosphor and thus requires the use of a relatively large amount of phosphor, which results in a stronger color appearance.
應注意，已知可使用有機發光材料取代無機發光材料。但是，為了獲得足夠高的演色指數，需使用有機發光材料與無機發光材料之組合。 It should be noted that it is known to use an organic luminescent material in place of the inorganic luminescent material. However, in order to obtain a sufficiently high color rendering index, a combination of an organic luminescent material and an inorganic luminescent material is required.
本發明之一目的係提供一種具有降低之色彩外觀之磷光體增強照明裝置。 It is an object of the present invention to provide a phosphor enhanced illumination device having a reduced color appearance.
本發明之第一態樣提供如技術方案1之磷光體增強照明裝置。本發明之第二態樣及本發明之第三態樣分別提供如技術方案14之改裝燈泡及燈管。本發明之第四態樣提供如技術方案15之照明器具。有利實施例定義於附屬技術方案中。 A first aspect of the present invention provides the phosphor-enhanced illumination device of the first aspect. The second aspect of the invention and the third aspect of the invention provide the retrofit bulb and the lamp of claim 14 respectively. A fourth aspect of the invention provides the lighting fixture of claim 15. Advantageous embodiments are defined in the dependent technical solutions.
根據本發明之第一態樣之磷光體增強照明裝置包括光源、光出口窗、第一光轉換元件及第二光轉換元件。光源透過其發光表面發射預定義色譜之光源光。光出口窗在操 作時發射光至磷光體增強照明裝置之周圍環境中。第一光轉換元件包括無機發光材料。無機發光材料吸收光源光之一部分並將吸收光之一部分轉換為第一色彩之光。第二光轉換元件包括第一有機發光材料。第一有機發光材料吸收光源光之一部分及/或吸收第一色彩之光之一部分。第一有機發光材料將吸收光之一部分轉換為第二色彩之光。第二光轉換元件光學配置在光出口窗與光源之發光表面之間。第一光轉換元件光學配置在第二光轉換元件與光源之發光表面之間。一間隙存在於第一光轉換元件與第二光轉換元件之間。 A phosphor-enhanced illumination device according to a first aspect of the present invention includes a light source, a light exit window, a first light conversion element, and a second light conversion element. The light source emits a source of light of a predefined chromatogram through its light emitting surface. Light exit window in operation The light is emitted to the surroundings of the phosphor-enhanced illumination device during operation. The first light converting element includes an inorganic luminescent material. The phosphor absorbs a portion of the source light and converts a portion of the absorbed light into light of the first color. The second light converting element includes a first organic light emitting material. The first organic luminescent material absorbs a portion of the light source and/or absorbs a portion of the light of the first color. The first organic luminescent material converts a portion of the absorbed light into a second color of light. The second light converting element is optically disposed between the light exit window and the light emitting surface of the light source. The first light converting element is optically disposed between the second light converting element and the light emitting surface of the light source. A gap exists between the first light conversion element and the second light conversion element.
發明者已發現若間隙存在於第一光轉換元件與第二光轉換元件之間使得第一光轉換元件與第二光轉換元件相比配置在與光出口窗相距更大距離之處，則色彩外觀降低。間隙之效果係與直接接觸第二光轉換元件之第一光轉換元件之組態相比第一光轉換元件接收較少光。因此，較少光被無機發光材料吸收且色彩外觀降低。第二光轉換元件與間隙之間之界面反射以相對於光出口窗之法線之相對較大角度照射之光且因此較少光被第一光轉換元件接收。 The inventors have found that if a gap exists between the first light conversion element and the second light conversion element such that the first light conversion element is disposed at a greater distance from the light exit window than the second light conversion element, the color The appearance is reduced. The effect of the gap is that the first light converting element receives less light than the configuration of the first light converting element that is in direct contact with the second light converting element. Therefore, less light is absorbed by the phosphor and the color appearance is lowered. The interface between the second light converting element and the gap reflects light that is illuminated at a relatively large angle relative to the normal to the light exit window and thus less light is received by the first light converting element.
第一光轉換元件與第二光轉換元件之間之間隙之存在意謂第一光轉換元件與第二光轉換元件不直接接觸。另一光透射材料(諸如空氣或水)可能介於第一光轉換元件與第二光轉換元件之間，但是在其他實施例中，間隙可為真空。 The existence of the gap between the first light conversion element and the second light conversion element means that the first light conversion element and the second light conversion element are not in direct contact. Another light transmissive material, such as air or water, may be interposed between the first light converting element and the second light converting element, but in other embodiments, the gap may be a vacuum.
應注意色彩外觀主要涉及光源未操作(意謂光源未發射預定義色彩分佈之光)之情況且可涉及較小範圍之周圍環 境之光之強度比光源所發射之光高得多之情況。若磷光體增強照明裝置之光源正發射光，則看向磷光體增強照明裝置的人看見磷光體增強照明裝置專門設計之色彩之光發射。操作時，所感受之磷光體增強照明裝置之光發射之色彩係由光源發射之預定義色彩分佈之光、由第一轉換元件發射之第一色彩之光及由第二光轉換元件發射之第二色彩之光之特定組合。但是，舉例而言，在直射日光照射在磷光體增強照明裝置上之情況中，若照射在磷光體增強照明裝置上之周圍環境光比由光源發射之光強得多，則無機發光材料對直射日光之反射可能變為明顯且因此觀看者看見無機發光材料之色彩外觀。 It should be noted that the color appearance mainly relates to the case where the light source is not operated (meaning that the light source does not emit light of a predefined color distribution) and may involve a smaller range of surrounding rings. The intensity of the light of the environment is much higher than the light emitted by the light source. If the source of the phosphor-enhanced illumination device is emitting light, the person looking at the phosphor-enhanced illumination device sees the light emission of the color specifically designed by the phosphor-enhanced illumination device. In operation, the perceived color of the phosphor-enhanced illumination device is the light of a predefined color distribution emitted by the light source, the first color of light emitted by the first conversion element, and the second emission by the second optical conversion element. A specific combination of two color lights. However, for example, in the case where direct sunlight is irradiated on the phosphor-enhanced illumination device, if the ambient light irradiated on the phosphor-enhanced illumination device is much stronger than the light emitted by the light source, the phosphor is directly directed The reflection of daylight may become apparent and thus the viewer sees the color appearance of the phosphor.
進一步需注意「光學配置在...之間」的含義係配置在第一元件與第二元件之間之特定元件配置在從第一元件至第二元件之光學路徑上且反之亦然。此一光學路徑並非根據定義沿著從第一元件至第二元件之直線，而是光學路徑因光學路徑上之鏡子而可能具有角隅。 It is further noted that the term "optical arrangement between" means that a particular element disposed between the first element and the second element is disposed on the optical path from the first element to the second element and vice versa. This optical path is not defined as a line along the line from the first element to the second element, but the optical path may have a corner due to the mirror on the optical path.
在本發明之情況中，預定義色彩分佈之光、第一色彩之光及/或第二色彩之光通常包括具有預定義光譜之光。預定義光譜可舉例而言包括具有圍繞預定義波長之特定帶寬之原色或可舉例而言包括複數個原色。預定義波長係輻射功率光譜分佈之平均波長。原色光舉例而言包含紅光、綠光、藍光、黃光及琥珀光。預定義色彩分佈、第一色彩及/或第二色彩之光亦可包括原色之混合，諸如藍色與琥珀色或藍色、黃色與紅色。 In the context of the present invention, the light of the predefined color distribution, the light of the first color and/or the light of the second color typically comprise light having a predefined spectrum. The predefined spectrum may include, for example, a primary color having a particular bandwidth around a predefined wavelength or may include, for example, a plurality of primary colors. The average wavelength of the spectral distribution of the radiation power of the predefined wavelength system. Primary light includes, by way of example, red, green, blue, yellow, and amber. The predefined color distribution, the first color, and/or the second color of light may also include a mixture of primary colors such as blue and amber or blue, yellow, and red.
在一實施例中，第一光轉換元件具有第一表面，若周圍環境光照射在光出口窗上則周圍環境光照射在該第一表面上。第二光轉換元件具有第二表面，若周圍環境光照射在光出口窗上則周圍環境光照射在該第二表面上。第一表面小於第二表面。若第一光轉換元件定位為更靠近光源，則由光源發射之光束之截面小於第二光轉換元件之位置上之光束之截面。因此，第一光轉換元件可具有小於第二光轉換元件之大小。因此，第一光轉換元件之第一表面小於第二光轉換元件之第二表面。具有較小第一表面意謂較少周圍環境光被吸收且因此色彩外觀降低。 In an embodiment, the first light converting element has a first surface, and ambient light illuminates the first surface if ambient light illuminates the light exit window. The second light converting element has a second surface on which ambient light illuminates if ambient light illuminates the light exit window. The first surface is smaller than the second surface. If the first light converting element is positioned closer to the light source, the cross section of the light beam emitted by the light source is smaller than the cross section of the light beam at the position of the second light converting element. Therefore, the first light conversion element may have a smaller size than the second light conversion element. Therefore, the first surface of the first light converting element is smaller than the second surface of the second light converting element. Having a smaller first surface means that less ambient light is absorbed and thus the color appearance is reduced.
在又一實施例中，第一光轉換元件配置在光源之附近。光源之附近意謂沿著光學路徑之光源與第一光轉換元件之間之距離比沿著光學路徑之光源與第二光轉換元件之間之距離小得多。舉例而言，沿著從光源至光出口窗之光學路徑，從光源至第一光轉換元件之距離小於從光源至第二光轉換元件之距離之20%。若第一光轉換元件在光源之附近，則其大小可能相對較小且如此一來來自周圍環境之光可照射之其表面相對較小使得色彩外觀可見性較不明顯。 In still another embodiment, the first light converting element is disposed adjacent to the light source. The vicinity of the light source means that the distance between the light source along the optical path and the first light converting element is much smaller than the distance between the light source along the optical path and the second light converting element. For example, along the optical path from the light source to the light exit window, the distance from the light source to the first light converting element is less than 20% of the distance from the light source to the second light converting element. If the first light converting element is in the vicinity of the light source, its size may be relatively small and as such, the light from the surrounding environment may be illuminated with a relatively small surface such that the color appearance visibility is less noticeable.
在一實施例中，第一光轉換元件配置在光源之發光表面上。 In an embodiment, the first light converting element is disposed on a light emitting surface of the light source.
在另一實施例中，第一光轉換元件覆蓋光源之整個發光表面。 In another embodiment, the first light converting element covers the entire light emitting surface of the light source.
光源之發光表面通常比光出口窗小得多且如此一來，第一光轉換元件可具有相對較小尺寸，而由光源產生之完整 光束仍透射穿過第一發光元件。具有相對較小尺寸有利，因為周圍環境光中較少光被第一光轉換元件吸收且如此一來，磷光體增強照明裝置之色彩外觀降低。 The light emitting surface of the light source is typically much smaller than the light exit window and as such, the first light converting element can have a relatively small size and be completed by the light source The beam is still transmitted through the first illuminating element. It is advantageous to have a relatively small size because less light in the ambient light is absorbed by the first light converting element and as such, the color appearance of the phosphor enhanced illumination device is reduced.
在又一實施例中，光源為發射藍光之發光二極體。無機發光材料為發射黃光或發射黃綠光之無機磷光體。操作時，光發射(即由光源發射之光與由第一光轉換元件產生之第一色彩之光之組合)具有高於10000開氏溫度之相關色溫且在靠近色彩空間中之黑體線之色彩空間中或在色彩空間中之黑體線上具有色點。黑體線係對應於具有特定溫度之理想化黑體之光發射之色彩空間中之一序列色點。色溫係理想化黑體之溫度。若發射之光之相關色溫高於10000開氏溫度且色點靠近黑體線，則人感受發射之光之色彩為白色或稍微帶藍色。將第一光轉換元件(其包括發射黃光或發射黃綠光之無機發光材料(磷光體))配置在發射藍光之發光二極體上使得光源之光發射與第一光轉換元件之光發射之組合具有高於10000開氏溫度之相關色溫且具有靠近黑體線之色點相對簡單。發射藍光之發光二極體可以相對較低價格購得。此外，第一光轉換元件需包括相對少量發射黃光或發射黃綠光之無機磷光體使得第一光轉換元件之價格亦相對較低。此外，使用相對少量無機磷光體導致色彩外觀降低。 In yet another embodiment, the light source is a light emitting diode that emits blue light. The inorganic luminescent material is an inorganic phosphor that emits yellow light or emits yellow-green light. In operation, the light emission (ie, the combination of the light emitted by the light source and the first color of light produced by the first light converting element) has a correlated color temperature above 10,000 Kelvin and a color of the black body line near the color space. There are color points in the space or on the black body lines in the color space. The black body line corresponds to one of the sequence color points in the color space of the light emission of the idealized black body having a specific temperature. The color temperature is the ideal temperature for the black body. If the correlated color temperature of the emitted light is above 10,000 Kelvin and the color point is close to the black line, then the person feels that the emitted light is white or slightly bluish. Disposing a first light converting element (which includes a phosphor emitting yellow or emitting phosphorescent phosphor (phosphor)) on a blue emitting light emitting diode such that light emission of the light source and light emission of the first light converting element are combined It is relatively simple to have a correlated color temperature above 10,000 Kelvin and to have a color point close to the black body line. Light-emitting diodes that emit blue light are commercially available at relatively low prices. In addition, the first light converting element needs to include a relatively small amount of inorganic phosphor that emits yellow light or emits yellow-green light such that the price of the first light converting element is also relatively low. In addition, the use of a relatively small amount of inorganic phosphor results in a decrease in color appearance.
在另一實施例中，光源與上方配置第一光轉換元件之發光表面之組合具有大於80%之光學封裝效率。 In another embodiment, the combination of the light source and the light emitting surface on which the first light converting element is disposed has an optical packaging efficiency of greater than 80%.
光學封裝效率定義為由光源發射之光子之數量占發射至 光源與第一光轉換元件之組合之周圍環境中之光子之數量之百分比。此外，需藉由將上述百分比除以無機發光材料之量子效率針對無機發光材料之量子效率校正光學封裝效率。無機發光材料之量子效率定義為由無機發光材料發射之光子之數量與由無機發光材料吸收之光子之數量之間之比率。術語「封裝」指代光源與第一光轉換元件之組合。 Optical package efficiency is defined as the amount of photons emitted by the light source that is emitted to The percentage of the number of photons in the surrounding environment of the combination of the light source and the first light converting element. In addition, the optical encapsulation efficiency needs to be corrected for the quantum efficiency of the phosphor by dividing the above percentage by the quantum efficiency of the phosphor. The quantum efficiency of a phosphor is defined as the ratio between the number of photons emitted by the phosphor and the amount of photons absorbed by the phosphor. The term "package" refers to a combination of a light source and a first light converting element.
第一光轉換元件可將其從光源接收之一些光反射回光源。此外，由第一光轉換元件產生之一些光可發射至光源之方向。許多光源(舉例而言諸如，固態發光器)吸收照射在其等上之光之相對較大部分。光吸收導致較低光學封裝效率。具有相對較高光學效率有利，因為需要較小功率以產生特定光量且光源之溫度不因光吸收之結果而升高。 The first light converting element can reflect some of the light it receives from the light source back to the light source. Furthermore, some of the light generated by the first light converting element can be emitted to the direction of the light source. Many light sources, such as, for example, solid state illuminators, absorb a relatively large portion of the light that illuminates them. Light absorption results in lower optical packaging efficiency. It is advantageous to have a relatively high optical efficiency because less power is required to produce a specific amount of light and the temperature of the source does not rise as a result of light absorption.
第一光轉換元件之無機發光材料之特性(舉例而言，吸收光譜及光發射光譜)、第一光轉換元件作為整體之散射及反射特性及舉例而言第一光轉換元件之厚度決定光源與第一光轉換元件之組合之光學封裝效率。光源之其他特性亦影響光學封裝效率舉例而言諸如，光源之吸收係數。 Characteristics of the phosphor of the first light converting element (for example, absorption spectrum and light emission spectrum), scattering and reflection characteristics of the first light converting element as a whole, and, for example, the thickness of the first light converting element determines the light source and The optical package efficiency of the combination of the first light converting elements. Other characteristics of the light source also affect the optical packaging efficiency such as, for example, the absorption coefficient of the light source.
在又一實施例中，光源與第一光轉換元件之組合之光學封裝效率大於90%。 In yet another embodiment, the optical package efficiency of the combination of the light source and the first light converting element is greater than 90%.
在另一實施例中，第二光轉換元件具有第二折射率。形成間隙之材料具有小於第二折射率之第一折射率。 In another embodiment, the second light converting element has a second index of refraction. The material forming the gap has a first index of refraction that is less than the second index of refraction.
因此，來自第二光轉換元件與間隙之界面部分反射在從第二光轉換元件朝向間隙之方向上透射之光。在此方向上透射之光可為照射在磷光體增強照明裝置之光出口窗上之 周圍環境光。尤其，若周圍環境光相對漫射，則光以所有角度照射在光出口窗上且如此一來，亦以複數個角度照射在第二光轉換元件與間隙之間的界面上。以相對於本界面之法線之相對較大角度照射之光將遭遇內部反射。因此，較少照射在磷光體增強照明裝置之光出口窗上之來自周圍環境之光朝向第一光轉換元件透射且如此一來，第一光轉換元件之色彩外觀受到限制。 Therefore, the interface portion from the second light conversion element and the gap reflects the light transmitted in the direction from the second light conversion element toward the gap. The light transmitted in this direction may be illuminated on the light exit window of the phosphor enhanced illumination device Ambient light. In particular, if the ambient light is relatively diffuse, the light illuminates the light exit window at all angles and, as such, also illuminates the interface between the second light converting element and the gap at a plurality of angles. Light that is illuminated at a relatively large angle relative to the normal to the interface will experience internal reflections. Therefore, light from the surrounding environment that is less irradiated on the light exit window of the phosphor-enhanced illumination device is transmitted toward the first light conversion element and as such, the color appearance of the first light conversion element is limited.
在一實施例中，間隙填充有流體。流體之實例係氣體(諸如空氣)或液體(諸如水)。 In an embodiment, the gap is filled with a fluid. Examples of fluids are gases such as air or liquids such as water.
在一實施例中，第二光轉換元件配置在光出口窗上。 In an embodiment, the second light converting element is disposed on the light exit window.
在又一實施例中，第二光轉換元件形成光出口窗。 In yet another embodiment, the second light converting element forms a light exit window.
在另一實施例中，光源係固態發光器。使用固態發光器有利，因為其等相對高效(將大量電能轉換為光)、尺寸相對較小且相對便宜。固態發光器可為發光二極體(LED)、有機發光二極體(OLED)、聚合物發光二極體(PLED)或雷射二極體。在可行實施例中，固態發光器發射藍光。 In another embodiment, the light source is a solid state illuminator. The use of solid state illuminators is advantageous because they are relatively efficient (converting large amounts of electrical energy into light), relatively small in size, and relatively inexpensive. The solid state illuminator can be a light emitting diode (LED), an organic light emitting diode (OLED), a polymer light emitting diode (PLED) or a laser diode. In a possible embodiment, the solid state illuminator emits blue light.
在一實施例中，第一光轉換元件及第二光轉換元件之至少一者係一層。層由該層之厚度比該層之寬度或深度至少小兩倍之性質定義。因此，術語「層」亦可解釋為「塗層」、「膜」或「瓦」。層的製作相對簡單且如此一來，磷光體增強照明裝置之成本可藉由使用包括特定發光材料之層而降低。應進一步注意層不一定遵循平坦面。層亦可具有曲面之形狀或半球之形狀。 In one embodiment, at least one of the first light conversion element and the second light conversion element is a layer. The layer is defined by the nature of the thickness of the layer being at least two times smaller than the width or depth of the layer. Therefore, the term "layer" can also be interpreted as "coating", "film" or "tile". The fabrication of the layers is relatively simple and as such, the cost of the phosphor enhanced illumination device can be reduced by using a layer comprising a particular luminescent material. It should be further noted that the layers do not necessarily follow a flat surface. The layer may also have the shape of a curved surface or the shape of a hemisphere.
在一實施例中，第二光轉換元件包括第二有機發光材 料。第二有機發光材料經組態以吸收光源光之一部分及/或吸收第一色彩之光之一部分及/或吸收第二色彩之光之一部分。第二有機發光材料進一步經組態以將吸收光之一部分轉換為第三色彩之光。額外有機發光材料之使用提供用於獲得具有特定光發射分佈之磷光體增強照明裝置之額外設計參數。由第二有機發光材料產生之光可用於將磷光體增強照明裝置之光發射之色彩偏移為色彩空間中之特定色點及獲得更高之演色指數。 In an embodiment, the second light converting element comprises a second organic light emitting material material. The second organic luminescent material is configured to absorb a portion of the source light and/or absorb a portion of the light of the first color and/or absorb a portion of the light of the second color. The second organic luminescent material is further configured to convert a portion of the absorbed light to a third color of light. The use of additional organic luminescent materials provides additional design parameters for obtaining a phosphor-enhanced illumination device having a particular light emission profile. Light produced by the second organic luminescent material can be used to shift the color of the light emission of the phosphor enhanced illumination device to a particular color point in the color space and to achieve a higher color rendering index.
在另一實施例中，第二光轉換元件係包括第一層及第二層之層堆疊。第一層包括第一有機發光材料且不包括第二有機發光材料。第二層包括第二有機發光材料且不包括第一有機發光材料。因此，第二光轉換元件包括各僅包括單個(有機)發光材料之層。將第二光轉換元件製作為單獨層之堆疊有利，因為此一結構可精確及相對廉價地製作。應注意在其他實施例中，第一有機發光材料與第二有機發光材料可混合並提供為單層。 In another embodiment, the second light converting element comprises a layer stack of the first layer and the second layer. The first layer includes the first organic light emitting material and does not include the second organic light emitting material. The second layer includes the second organic light emitting material and does not include the first organic light emitting material. Thus, the second light converting element comprises layers each comprising only a single (organic) luminescent material. It is advantageous to make the second light converting element as a stack of separate layers because this structure can be fabricated accurately and relatively inexpensively. It should be noted that in other embodiments, the first organic luminescent material and the second organic luminescent material may be mixed and provided as a single layer.
在一實施例中，磷光體增強照明裝置包括散射層且散射層光學配置在光出口窗與第二光轉換元件之間。在另一實施例中，第二光轉換元件包括散射粒子。散射層或散射粒子散射從周圍環境照射的光並防止來自周圍環境之大量光朝向第一光轉換元件透射。因此，色彩外觀由散射粒子或散射層降低。在光源未操作時看向光出口窗的人主要看見被散射粒子或散射層散射及反射之周圍環境光。 In an embodiment, the phosphor enhanced illumination device includes a scattering layer and the scattering layer is optically disposed between the light exit window and the second light converting element. In another embodiment, the second light converting element comprises scattering particles. The scattering layer or scattering particles scatter light that is illuminated from the surrounding environment and prevent a large amount of light from the surrounding environment from being transmitted toward the first light converting element. Therefore, the appearance of color is reduced by scattering particles or scattering layers. The person looking at the light exit window when the light source is not operating mainly sees the ambient light scattered and reflected by the scattering particles or the scattering layer.
根據本發明之第二態樣，提供一種改裝燈泡，其包括根 據本發明之第一態樣之磷光體增強照明裝置。 According to a second aspect of the present invention, there is provided a retrofit bulb comprising a root A phosphor-enhanced illumination device according to a first aspect of the invention.
根據本發明之第三態樣，提供一種燈管，其包括根據本發明之第一態樣之磷光體增強照明裝置。 According to a third aspect of the invention, there is provided a lamp comprising a phosphor enhanced illumination device according to the first aspect of the invention.
根據本發明之第四態樣，提供一種照明器具，其包括根據本發明之第一態樣之磷光體增強照明裝置或包括根據本發明之第二態樣之改裝燈泡或包括根據本發明之第三態樣之燈管。 According to a fourth aspect of the invention there is provided a lighting fixture comprising a phosphor-enhanced illumination device according to a first aspect of the invention or a retrofit bulb comprising a second aspect of the invention or comprising the invention according to the invention Three-state lamp.
改裝燈泡、燈管及照明器具提供與根據本發明之第一態樣之磷光體增強照明裝置相同之好處且具有與磷光體增強照明裝置之對應實施例具有類似效果之類似實施例。 Retrofit bulbs, tubes, and lighting fixtures provide similar benefits to phosphor-enhanced illumination devices in accordance with the first aspect of the present invention and have similar embodiments with similar effects to corresponding embodiments of phosphor-enhanced illumination devices.
參考下文所述之實施例可瞭解及說明本發明之此等及其他態樣。 These and other aspects of the invention are apparent from and elucidated with reference to the embodiments described herein.
熟習此項技術者應瞭解本發明之上述實施例、實施方案及/或態樣之兩者或兩者以上可以被視作有用的任何方式組合。 It will be appreciated by those skilled in the art that the above-described embodiments, embodiments, and/or aspects of the invention may be combined in any manner that may be considered useful.
對應於磷光體增強照明裝置之所述修改及變動之改裝燈泡、燈管及照明器具之修改及變動可由熟習此項技術者基於本描述執行。 Modifications and variations of retrofit bulbs, tubes, and lighting fixtures corresponding to the modifications and variations of the phosphor-enhanced illumination device can be performed by those skilled in the art based on this description.
磷光體增強照明裝置100之第一實施例之截面展示在圖1a及圖1b中。圖1a示意展示光源116操作時之磷光體增強照明裝置100。圖1b示意展示光源116未操作時之磷光體增強照明裝置100。 A cross section of a first embodiment of a phosphor enhanced illumination device 100 is shown in Figures 1a and 1b. Figure 1a schematically illustrates a phosphor enhanced illumination device 100 when the light source 116 is in operation. Figure 1 b schematically illustrates a phosphor enhanced illumination device 100 when the light source 116 is not operating.
磷光體增強照明裝置100具有光出口窗102，由磷光體增 強照明裝置100發射之光穿過該光出口窗102。在磷光體增強照明裝置100之周圍環境中示意繪示看向磷光體增強照明裝置100之光出口窗102之觀看者106。磷光體增強照明裝置100進一步包括在操作時透過其發光表面118發射預定義色彩分佈之光114之光源116，該發光表面118在圖1a之實施例中為光源116之頂部表面。 Phosphor-enhanced illumination device 100 has a light exit window 102 that is grown by phosphor Light emitted by the intense illumination device 100 passes through the light exit window 102. A viewer 106 looking towards the light exit window 102 of the phosphor enhanced illumination device 100 is schematically depicted in the surrounding environment of the phosphor enhanced illumination device 100. Phosphor-enhanced illumination device 100 further includes a light source 116 that, when operatively, emits light 114 of a predefined color distribution through its illumination surface 118, which is the top surface of light source 116 in the embodiment of Fig. Ia.
磷光體增強照明裝置100進一步包括第一光轉換元件112及第二光轉換元件110。第一光轉換元件112包括吸收由光源發射之光114之一部分並將吸收光之一部分轉換為第一色彩之光104之無機發光材料。第二光轉換元件包括第一有機發光材料。第一有機材料吸收由光源發射之光114及/或吸收由第一光轉換元件發射之光104。第一有機材料將吸收光轉換為第二色彩之光108。 The phosphor enhanced illumination device 100 further includes a first light conversion element 112 and a second light conversion element 110. The first light converting element 112 includes a phosphor that absorbs a portion of the light 114 emitted by the light source and converts a portion of the absorbed light into light 104 of the first color. The second light converting element includes a first organic light emitting material. The first organic material absorbs light 114 emitted by the light source and/or absorbs light 104 emitted by the first light converting element. The first organic material converts the absorbed light into light 108 of the second color.
第二光轉換元件110配置在光出口窗102與光源116之間。第一光轉換元件112配置在第二光轉換元件110與光源116之間。第一光轉換元件112與第二光轉換元件110之間係間隙111，其意謂第一光轉換元件112不直接接觸第二光轉換元件110。另一材料存在於第一光轉換元件112與第二光轉換元件110之間。 The second light conversion element 110 is disposed between the light exit window 102 and the light source 116. The first light conversion element 112 is disposed between the second light conversion element 110 and the light source 116. A gap 111 is formed between the first light conversion element 112 and the second light conversion element 110, which means that the first light conversion element 112 does not directly contact the second light conversion element 110. Another material exists between the first light conversion element 112 and the second light conversion element 110.
因此，若光源116操作，則預定義色彩分佈之光114首先透射穿過第一光轉換元件112且光之一部分轉換為第一色彩之光104。隨後第二光轉換元件110接收第一色彩之光104及預定義色彩分佈之光114並將光之一部分轉換為第二色彩之光108。穿過光出口窗102之光發射係預定義色彩分 佈之光114、第一色彩之光104與第二色彩之光108之特定組合。光104、108、114之此組合被觀看者106感受為特定色彩，換言之，穿過光出口窗102之光發射可由色彩空間(舉例而言，CIE xyz色彩空間)中之特定色點表示。轉換元件中使用之發光材料之特定數量、所使用之發光材料之特性及由光源116發射之預定義色彩分佈之特性決定發射穿過光出口窗102之光之色點。 Thus, if light source 116 is operating, light 114 of a predefined color distribution is first transmitted through first light converting element 112 and a portion of the light is converted into light 104 of a first color. The second light converting element 110 then receives the first color light 104 and the predefined color distribution light 114 and converts one of the light portions into a second color light 108. Light emission system through the light exit window 102 predefined color points A particular combination of cloth light 114, first color light 104, and second color light 108. This combination of lights 104, 108, 114 is perceived by the viewer 106 as a particular color, in other words, light emission through the light exit window 102 can be represented by a particular color point in the color space (e.g., CIE xyz color space). The particular number of luminescent materials used in the conversion element, the characteristics of the luminescent material used, and the characteristics of the predefined color distribution emitted by the source 116 determine the color point of the light that is emitted through the light exit window 102.
應注意第一光轉換元件112(舉例而言，當使用陶瓷無機發光材料時)可僅由無機發光材料組成或第一無機材料可分散在聚合物(通常稱作基質聚合物)中或可分散在另一光透射材料中。第二光轉換元件110之有機發光材料通常分子溶解在基質聚合物或另一材料中。可在諸如丙烯酸酯(舉例而言，聚甲基丙烯酸甲酯=PMMA)、聚碳酸酯、聚苯乙烯、聚乙烯、聚乙烯對苯二甲酸酯、聚萘二甲酸乙二醇酯之聚合物及其等之共聚物及摻合物中選擇聚合物基質。此外，在圖1a之圖式中，第一光轉換元件112及第二光轉換元件110之截面繪示為長矩形(其可為矩形層之截面)或碟狀層，但是轉換元件110、112之形狀可與此等形狀不同。 It should be noted that the first light converting element 112 (for example, when using a ceramic phosphor) may be composed only of a phosphor or the first inorganic material may be dispersed in a polymer (commonly referred to as a matrix polymer) or may be dispersed. In another light transmissive material. The organic luminescent material of the second light converting element 110 is typically molecularly dissolved in the matrix polymer or another material. Polymerization such as acrylate (for example, polymethyl methacrylate = PMMA), polycarbonate, polystyrene, polyethylene, polyethylene terephthalate, polyethylene naphthalate The polymer matrix is selected from the copolymers and blends of the materials and the like. In addition, in the diagram of FIG. 1a, the first light conversion element 112 and the second light conversion element 110 are depicted as a long rectangle (which may be a cross section of a rectangular layer) or a dish layer, but the conversion elements 110, 112 The shape can be different from these shapes.
圖1b展示光源116未操作之情況，且周圍環境光150以相對於光出口窗102之法線之複數個角度照射在磷光體增強照明裝置100之光出口窗102上。在可行情況中，周圍環境光150相對漫射且光以複數個角度照射在光出口窗上。以相對於光出口窗102之法線之相對較小角度照射的周圍環境光150透射穿過第二光轉換元件。以相對於光出口窗102 之法線之相對較大角度照射的周圍環境光150在第二光轉換元件110與間隙111之間之界面152上反射且因此不朝向第一光轉換元件112透射。因此，僅照射周圍環境光150之一部分透射至第一光轉換元件112。第一光轉換元件112之無機發光材料根據無機發光材料之吸收光譜吸收照射周圍環境光150之一些。未吸收之光154散射並反射回光出口窗102。未吸收之光154確實包括較少第一光轉換元件112之無機發光材料之吸收光譜中之光且因此被觀看者106感受為特定色彩之光。此特定色彩係磷光體增強照明裝置100之色彩外觀且特定色彩與無機發光材料之吸收光譜之色彩互補。 1b shows the case where the light source 116 is not operating, and ambient light 150 is illuminated at a plurality of angles relative to the normal to the light exit window 102 on the light exit window 102 of the phosphor enhanced illumination device 100. Where practicable, ambient light 150 is relatively diffuse and light is illuminated at a plurality of angles on the light exit window. Ambient ambient light 150 that is illuminated at a relatively small angle relative to the normal to light exit window 102 is transmitted through the second light converting element. Relative to the light exit window 102 The ambient light 150 illuminated by the relatively large angle of the normal is reflected at the interface 152 between the second light converting element 110 and the gap 111 and is therefore not transmitted toward the first light converting element 112. Therefore, only a portion of the ambient light 150 is transmitted to the first light conversion element 112. The phosphor of the first light converting element 112 absorbs some of the ambient light 150 in response to the absorption spectrum of the phosphor. The unabsorbed light 154 is scattered and reflected back to the light exit window 102. The unabsorbed light 154 does include less light in the absorption spectrum of the phosphor of the first light converting element 112 and is therefore perceived by the viewer 106 as a particular color of light. This particular color phosphor enhances the color appearance of the illumination device 100 and the particular color is complementary to the color of the absorption spectrum of the phosphor.
因此，與第一光轉換元件112與第二光轉換元件110之間無間隙111之磷光體增強照明裝置相比，圖1之磷光體增強照明裝置之色彩外觀較少，其意味著較少色彩被看見(因此，所看見之色彩之飽和度相對較低)。 Therefore, the phosphor-enhanced illumination device of FIG. 1 has less color appearance than the phosphor-enhanced illumination device having no gap 111 between the first light conversion element 112 and the second light conversion element 110, which means less color. It is seen (thus, the saturation of the color seen is relatively low).
圖2a呈現磷光體增強照明裝置200之另一實施例。與圖1之磷光體增強照明裝置100相比，第一光轉換元件212設置在光源116之發光表面上且第二光轉換元件210形成磷光體增強照明裝置200之光出口窗。第一光轉換元件212與第二光轉換元件210之間之間隙202係磷光體增強光源200之腔。腔填充有具有低於第二光轉換元件210之折射率之折射率之材料。此外，與光出口窗102相對之腔之內表面204具光反射性使得照射在內表面204上之光被反射回光出口窗並被再循環。圍繞腔之壁亦可針對相同目而具光反射 性。由於第一光轉換元件212直接設置在光源116之發光表面之頂部上，故其可具有相對較小大小。較少從周圍環境照射的光可以照射在第一光轉換元件上且因此磷光體增強照明裝置200之色彩外觀降低。 FIG. 2a presents another embodiment of a phosphor enhanced illumination device 200. In contrast to the phosphor enhanced illumination device 100 of FIG. 1, the first light converting element 212 is disposed on a light emitting surface of the light source 116 and the second light converting element 210 forms a light exit window of the phosphor enhanced illumination device 200. The gap 202 between the first light converting element 212 and the second light converting element 210 is a cavity of the phosphor enhancing light source 200. The cavity is filled with a material having a refractive index lower than that of the second light conversion element 210. In addition, the inner surface 204 of the cavity opposite the light exit window 102 is light reflective such that light that impinges on the inner surface 204 is reflected back to the light exit window and is recirculated. The wall around the cavity can also have light reflection for the same purpose Sex. Since the first light converting element 212 is disposed directly on top of the light emitting surface of the light source 116, it can have a relatively small size. Less light illuminating from the surrounding environment may illuminate the first light converting element and thus the phosphor appearance of the phosphor enhancing illumination device 200 is reduced.
圖2b呈現具有製作為兩層堆疊之第二光轉換元件252之磷光體增強照明裝置250之變體。層堆疊之第一層254包括第一有機發光材料且第二層256包括第二有機發光材料。第一有機發光材料及第二發光材料不同且將由特定材料吸收之光轉換為其他色彩。如此一來，若磷光體增強照明裝置操作，則額外色彩發射穿過光出口窗至周圍環境中。此提供額外設計自由以設計發射特定色點之光且具有相對較高演色指數之磷光體增強照明裝置。 Figure 2b presents a variation of a phosphor enhanced illumination device 250 having a second light conversion element 252 fabricated in a two layer stack. The first layer 254 of the layer stack includes a first organic light emitting material and the second layer 256 includes a second organic light emitting material. The first organic luminescent material and the second luminescent material are different and convert light absorbed by the specific material into other colors. As such, if the phosphor enhances illumination device operation, additional color is emitted through the light exit window into the surrounding environment. This provides additional design freedom to design a phosphor-enhanced illumination device that emits light of a particular color point and has a relatively high color rendering index.
第一光轉換元件212包括無機發光材料。此等材料之實例為摻Ce之YAG或LuAG。摻Ce之YAG發射帶黃色之光且摻Ce之LuAg發射帶黃綠色之光。兩種材料具有相對較寬發射光譜，其中發射光譜之尾部甚至可包括紅光光譜範圍中之波長。第二光轉換元件210、252包括可基於苝衍生物之有機發光材料。基於苝衍生物之發光材料之實例由BASF以Lumogen之名稱銷售。 The first light converting element 212 includes a phosphor. Examples of such materials are Ce-doped YAG or LuAG. The Ce-doped YAG emits yellow light and the Ce-doped LuAg emits yellow-green light. Both materials have a relatively broad emission spectrum, where the tail of the emission spectrum may even include wavelengths in the red spectral range. The second light converting elements 210, 252 comprise an organic light emitting material that can be based on an anthracene derivative. An example of a luminescent material based on an anthracene derivative is sold by BASF under the name Lumogen.
設置在光源116之發光表面之頂部上之光源116與第一光轉換元件212之特定組合可為所謂顯示發光二極體(LED)。顯示LED之光源116發射藍光且第一光轉換元件212將相對較小部分之藍光轉換為黃光或黃綠光。所得光發射(其為由光源發射之藍光與由無機發光材料發射之黃光或黃綠光 之組合)具有靠近色彩空間之黑體線之色彩空間中之色點且具有高於10000開氏溫度之相關色溫。為獲得此一光發射，僅需在發射藍光之LED之頂部上使用相對薄的無機發光材料層，其導致高的光學效率。薄無機發光材料層不將多數藍光反射或散射回LED且不朝向LED發射多數黃色或黃綠色之光。LED大致上不反射多數照射在其等上之光且如此一來，反射或散射回LED或朝向LED發射之光之多數導致LED與無機發光層之組合之低效率。光源116與第一光轉換元件212之組合之光學封裝效率大於80%且在另一實施例中大於90%。 The particular combination of light source 116 and first light converting element 212 disposed on top of the light emitting surface of light source 116 can be a so-called display light emitting diode (LED). The light source 116 that displays the LED emits blue light and the first light converting element 212 converts a relatively small portion of the blue light into yellow or yellow-green light. The resulting light emission (which is the blue light emitted by the light source and the yellow or yellow-green light emitted by the inorganic luminescent material) The combination has a color point in the color space of the black body line near the color space and has a correlated color temperature above 10,000 Kelvin. To achieve this light emission, it is only necessary to use a relatively thin layer of phosphor on top of the LED that emits blue light, which results in high optical efficiency. The thin layer of phosphor does not reflect or scatter most of the blue light back to the LED and does not emit most yellow or yellow-green light toward the LED. The LEDs do not substantially reflect most of the light that is incident on them, and as such, the majority of the light that is reflected or scattered back to the LED or emitted toward the LED results in inefficiencies in the combination of the LED and the inorganic light-emitting layer. The optical package efficiency of the combination of light source 116 and first light converting element 212 is greater than 80% and in another embodiment greater than 90%.
應注意，若使用兩個有機發光材料，則其等亦可混合為一層，舉例而言諸如圖2a之第二光轉換元件210層。在其他實施例中，使用兩種以上有機發光材料，其等可以任何組合混合為一層或具有兩層或更多層之層堆疊。 It should be noted that if two organic luminescent materials are used, they may also be mixed into one layer, such as, for example, the second layer of light converting elements 210 of Figure 2a. In other embodiments, two or more organic luminescent materials are used, which may be mixed in any combination into one layer or a layer stack having two or more layers.
具有從光源116朝向光出口窗102之彎曲光學路徑304、354之磷光體增強照明裝置之截面呈現在圖3a及圖3b中。至少一鏡子302、352存在於光學路徑304、354中。 A cross-section of a phosphor-enhanced illumination device having curved optical paths 304, 354 from light source 116 toward light exit window 102 is presented in Figures 3a and 3b. At least one mirror 302, 352 is present in the optical paths 304, 354.
磷光體增強照明裝置300具有配置在光源116與第一光轉換元件212之組合上方之一鏡子302。鏡子302將所接收之光朝向配置在磷光體增強照明裝置300之底座、光源116旁邊之第二光轉換元件110反射。第二光轉換元件110之後側具反射性使得照射在第二光轉換元件110上及在第二光轉換元件110內產生之光被朝向光出口窗102反射。 The phosphor enhanced illumination device 300 has a mirror 302 disposed above the combination of the light source 116 and the first light conversion element 212. The mirror 302 reflects the received light toward the second light converting element 110 disposed adjacent to the base of the phosphor enhanced illumination device 300 and the light source 116. The rear side of the second light converting element 110 is reflective such that light that is incident on the second light converting element 110 and generated within the second light converting element 110 is reflected toward the light exit window 102.
磷光體增強照明裝置350之光出口窗102配置在磷光體增 強照明裝置350之一側上。在磷光體增強照明裝置300之腔內，塗佈有第二光轉換元件110之鏡子352以相對於上方配置光源116之磷光體增強照明裝置之底座之特定角度配置。 The light exit window 102 of the phosphor-enhanced illumination device 350 is disposed in the phosphor On one side of the strong illumination device 350. Within the cavity of the phosphor-enhanced illumination device 300, the mirror 352 coated with the second light converting element 110 is disposed at a particular angle relative to the base of the phosphor-enhanced illumination device with the light source 116 disposed above.
圖4a示意展示磷光體增強照明裝置400之另一實施例之截面。複數個光源116設置在底座402上。在光源116之各者之頂部上設置包括無機發光材料之第一光轉換元件212。此外，在與第一光轉換元件212相距一定距離處設置包括第一有機發光材料之第二光轉換元件210。第二光轉換元件210形成磷光體增強照明裝置400之光出口窗102。磷光體增強照明裝置400進一步延伸至左側及右側。 Figure 4a schematically illustrates a cross section of another embodiment of a phosphor enhanced illumination device 400. A plurality of light sources 116 are disposed on the base 402. A first light converting element 212 comprising a phosphor is disposed on top of each of the light sources 116. Further, a second light converting element 210 including a first organic light emitting material is disposed at a distance from the first light converting element 212. The second light converting element 210 forms a light exit window 102 of the phosphor enhanced illumination device 400. Phosphor enhanced illumination device 400 extends further to the left and right sides.
圖4b示意展示磷光體增強照明裝置430之另一變體。在第二光轉換元件210之頂部上設置具有散射粒子434之漫射層432。散射層432形成光出口窗102。漫射層432提供更好的色彩混合及漫射光輸出。此外，若光源116未操作且若周圍環境光照射在散射層432上，則周圍環境光大部分被散射及反射回周圍環境。因此，較少周圍環境光照射在第一光轉換元件212上且因此磷光體增強照明裝置430之色彩外觀降低。漫射層可包括由TiO2或Al2O3製成之散射粒子。 Figure 4b schematically illustrates another variation of the phosphor enhanced illumination device 430. A diffusing layer 432 having scattering particles 434 is disposed on top of the second light converting element 210. The scattering layer 432 forms a light exit window 102. Diffuse layer 432 provides better color mixing and diffused light output. In addition, if the light source 116 is not operated and if ambient light is incident on the scattering layer 432, most of the ambient light is scattered and reflected back to the surrounding environment. Therefore, less ambient light is illuminated on the first light converting element 212 and thus the color appearance of the phosphor enhanced illumination device 430 is reduced. The diffusing layer may include scattering particles made of TiO 2 or Al 2 O 3 .
在本段中，提供磷光體增強照明裝置之兩個實例，其包括具有作為三層堆疊之第二光轉換元件之具有20000 K之相關色溫之顯示發光二極體(LED)。顯示LED包括發射藍光之LED及顯示LED之發光表面之頂部上之摻Ce之YAG或 摻CE之LuAG之薄層。在第一實施例中，三層堆疊包括光出口窗之側上之包括10 wt%TiO2粒子之60 μm厚之PMMA漫射層。中間層之厚度為27 μm且包括0.1 wt% Lumogen Yellow f170(BASF銷售之苝衍生物)。最靠近顯示LED之堆疊之層之厚度亦為27 μm且包括0.025 wt% Lumogen Red f305。在第二實施例中，三層堆疊包括位於光出口窗之側上之包括10 wt% TiO2粒子之60 μm厚之PMMA漫射層。中間層之厚度為54 μm且包括0.1 wt% Lumogen Yellow f170(BASF銷售之苝衍生物)。最靠近顯示LED之堆疊之層之厚度亦為27 μm且包括0.05 wt% Lumogen Red f305。具有第一實施例之三層堆疊之磷光體增強照明裝置在大約4000開氏溫度下發射光且具有大於80之演色係數(CRI)。具有第二實施例之三層堆疊之磷光體增強照明裝置在大約3000開氏溫度下發射光且具有大於80之CRI。 In this paragraph, two examples of phosphor-enhanced illumination devices are provided that include a display light-emitting diode (LED) having a correlated color temperature of 20,000 K as a two-layer stacked second light conversion element. The display LED comprises a blue emitting LED and a thin layer of Ce-doped YAG or CE-doped LuAG on top of the illuminated surface of the LED. In a first embodiment, the three layer stack comprises a 60 μm thick PMMA diffusing layer comprising 10 wt% TiO 2 particles on the side of the light exit window. The intermediate layer had a thickness of 27 μm and included 0.1 wt% Lumogen Yellow f170 (anthracene derivative sold by BASF). The layer closest to the stack of display LEDs is also 27 μm thick and includes 0.025 wt% Lumogen Red f305. In a second embodiment, the three layer stack comprises a 60 μm thick PMMA diffusing layer comprising 10 wt% TiO 2 particles on the side of the light exit window. The intermediate layer had a thickness of 54 μm and included 0.1 wt% Lumogen Yellow f170 (anthracene derivative sold by BASF). The layer closest to the stack of display LEDs is also 27 μm thick and includes 0.05 wt% Lumogen Red f305. The phosphor-enhanced illumination device having the three-layer stack of the first embodiment emits light at a temperature of about 4000 Kelvin and has a color rendering coefficient (CRI) of greater than 80. A phosphor-enhanced illumination device having a three-layer stack of the second embodiment emits light at a temperature of about 3000 Kelvin and has a CRI greater than 80.
圖4c示意展示與圖4b之磷光體增強照明裝置稍微不同之另一磷光體增強照明裝置460之截面。磷光體增強照明裝置462在第二光轉換元件462中具有散射粒子而非具有帶散射粒子之單獨層。 Figure 4c schematically illustrates a cross section of another phosphor enhanced illumination device 460 that is slightly different than the phosphor enhanced illumination device of Figure 4b. Phosphor-enhanced illumination device 462 has scattering particles in second light converting element 462 rather than having separate layers with scattering particles.
圖5a示意展示磷光體增強照明裝置500之又一實施例之截面。磷光體增強照明裝置500類似於圖2a之磷光體增強照明裝置200且差異涉及在光源116之發光表面之頂部上設置具有第一光轉換元件212之一個以上光源116。圖5b展示另一磷光體增強照明裝置550，其包括插置於底座402與第二光轉換元件210之間之壁554。壁圍繞各光源116形成單 獨腔556、552。 Figure 5a schematically illustrates a cross section of yet another embodiment of a phosphor enhanced illumination device 500. Phosphor-enhanced illumination device 500 is similar to phosphor-enhanced illumination device 200 of FIG. 2a and differs in that one or more light sources 116 having first light conversion elements 212 are disposed on top of the light-emitting surface of light source 116. FIG. 5b shows another phosphor enhanced illumination device 550 that includes a wall 554 interposed between the base 402 and the second light conversion element 210. The wall forms a single sheet around each of the light sources 116 Single cavity 556, 552.
圖6a呈現根據本發明之第二態樣之改裝燈泡600、610之截面。改裝燈泡610包括示意繪示為矩形之磷光體增強照明裝置612。矩形代表舉例而言圖2a之磷光體增強照明裝置200之盒體。在另一實施例中，光源606設置在燈泡600內且設置在燈泡600之底座608上。第一轉換元件604設置在光源606之發光表面之頂部上。第一光轉換元件604包括無機發光材料。燈泡之內表面具有包括第一有機發光材料之第二光轉換元件602。無機發光材料及第一有機發光材料具有如先前圖式中所述之相同特性、功能及好處。第一光轉換元件604與第二光轉換元件602之間之間隙由燈泡之內部空間形成。 Figure 6a presents a cross-section of a retrofit bulb 600, 610 in accordance with a second aspect of the present invention. The retrofit bulb 610 includes a phosphor-enhanced illumination device 612 that is schematically depicted as a rectangle. The rectangle represents a box of the phosphor-enhanced illumination device 200 of Figure 2a, for example. In another embodiment, light source 606 is disposed within bulb 600 and disposed on base 608 of bulb 600. The first conversion element 604 is disposed on top of the light emitting surface of the light source 606. The first light converting element 604 includes a phosphor. The inner surface of the bulb has a second light converting element 602 comprising a first organic luminescent material. The phosphor and the first organic luminescent material have the same characteristics, functions, and benefits as described in the previous figures. The gap between the first light conversion element 604 and the second light conversion element 602 is formed by the internal space of the bulb.
圖6b呈現燈管630、640之兩個實施例之截面。燈管640在沿著管體之方向上包括複數個磷光體增強照明裝置612。燈管630之另一實施例在沿著管體之方向上包括複數個光源606。第一光轉換元件604設置在各光源606之頂部上。管體之內表面具有第二光轉換元件602。第一光轉換元件604及第二光轉換元件602具有與參考先前圖式所述之第一光轉換元件及第二光轉換元件類似之特性、好處及功能。 Figure 6b presents a cross section of two embodiments of the tubes 630, 640. Lamp 640 includes a plurality of phosphor enhanced illumination devices 612 in a direction along the tubular body. Another embodiment of the tube 630 includes a plurality of light sources 606 in the direction of the tube. A first light converting element 604 is disposed on top of each of the light sources 606. The inner surface of the tubular body has a second light converting element 602. The first light converting element 604 and the second light converting element 602 have similar characteristics, benefits, and functions as the first light converting element and the second light converting element described with reference to the previous figures.
圖6c呈現包括根據本發明之第一態樣之一或多個磷光體增強照明裝置662之照明器具660。在其他實施例中，照明器具可包括如在圖6a之情況中討論之改裝燈泡或可包括如在圖6b之情況中討論之燈管。 Figure 6c presents a lighting fixture 660 comprising one or more phosphor enhanced illumination devices 662 in accordance with a first aspect of the present invention. In other embodiments, the lighting fixture may include a retrofit bulb as discussed in the context of Figure 6a or may include a bulb as discussed in the context of Figure 6b.
應注意上述實施例闡釋而非限制本發明且熟習此項技術者能夠在不脫離隨附申請專利範圍之範疇之情況下設計許多替代實施例。 It should be noted that the above-described embodiments are illustrative and not restrictive of the invention, and many alternative embodiments can be devised without departing from the scope of the appended claims.
在申請專利範圍中，置於括弧之間的任何元件符號不可解釋為限制申請專利範圍。動詞「包括」及其詞形變化之使用不排除除申請專利範圍所述之元件或步驟以外之元件或步驟之存在。元件之前的冠詞「一」或「一個」不排除複數個此等元件的存在。在列舉數個構件的裝置請求項中，此等構件中之數個可由一件且同一件硬體物品體現。某些措施敘述在相互不同的從屬請求項中之純粹事實並不表示不可有利地使用此等措施之組合。 In the scope of the patent application, any component symbol placed between parentheses shall not be construed as limiting the scope of the patent application. The use of the verb "comprise" and its conjugations does not exclude the presence of the elements or steps in the The articles "a" or "an" In a device request item that enumerates several components, several of these components may be embodied by one piece and the same piece of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not mean that a combination of such measures may not be used.
應注意在不同圖式中用相同元件符號標注的項目具有相同結構特徵及相同功能或為相同信號。在已說明此一項目之功能及/或結構的情況下，則無需在詳細描述中重複其說明。 It should be noted that items marked with the same element symbols in different figures have the same structural features and the same functions or the same signals. In the case where the function and/or structure of this item has been described, it is not necessary to repeat the description in the detailed description.
圖式僅圖解且未按比例繪製。尤其為簡潔起見，一些尺寸被嚴重擴大。 The drawings are only diagrammatic and not drawn to scale. Especially for the sake of brevity, some sizes have been greatly expanded.
100‧‧‧磷光體增強照明裝置 100‧‧‧phosphor enhanced lighting
102‧‧‧光出口窗 102‧‧‧Light exit window
104‧‧‧第一色彩之光 104‧‧‧The first color of light
106‧‧‧觀看者 106‧‧‧ Viewers
110‧‧‧第二光轉換元件 110‧‧‧Second light conversion element
111‧‧‧間隙 111‧‧‧ gap
112‧‧‧第一光轉換元件 112‧‧‧First light conversion element
114‧‧‧預定義色彩分佈之光 114‧‧‧Predefined color distribution light
116‧‧‧光源 116‧‧‧Light source
150‧‧‧周圍環境光 150‧‧‧ ambient light
152‧‧‧界面 152‧‧‧ interface
154‧‧‧未吸收之光 154‧‧‧Unabsorbed light
200‧‧‧磷光體增強照明裝置 200‧‧‧phosphor enhanced lighting
202‧‧‧間隙 202‧‧‧ gap
204‧‧‧內表面 204‧‧‧ inner surface
210‧‧‧第二光轉換元件 210‧‧‧Second light conversion element
212‧‧‧第一光轉換元件 212‧‧‧First light conversion element
250‧‧‧磷光體增強照明裝置 250‧‧‧phosphor enhanced lighting
252‧‧‧第二光轉換元件 252‧‧‧Second light conversion element
254‧‧‧第一層 254‧‧‧ first floor
256‧‧‧第二層 256‧‧‧ second floor
300‧‧‧磷光體增強照明裝置 300‧‧‧phosphor enhanced lighting
302‧‧‧鏡子 302‧‧‧Mirror
304‧‧‧光學路徑 304‧‧‧ optical path
350‧‧‧磷光體增強照明裝置 350‧‧‧phosphor enhanced lighting
352‧‧‧鏡子 352‧‧‧Mirror
354‧‧‧光學路徑 354‧‧‧ Optical path
400‧‧‧磷光體增強照明裝置 400‧‧‧phosphor enhanced lighting
402‧‧‧底座 402‧‧‧Base
430‧‧‧磷光體增強照明裝置 430‧‧‧phosphor enhanced lighting
432‧‧‧漫射層/散射層 432‧‧‧Diffuse layer/scattering layer
434‧‧‧散射粒子 434‧‧‧scattering particles
460‧‧‧磷光體增強照明裝置 460‧‧‧phosphor enhanced lighting
462‧‧‧磷光體增強照明裝置 462‧‧‧phosphor enhanced lighting
500‧‧‧磷光體增強照明裝置 500‧‧‧phosphor enhanced lighting
550‧‧‧磷光體增強照明裝置 550‧‧‧phosphor enhanced lighting
552‧‧‧腔 552‧‧‧ cavity
554‧‧‧壁 554‧‧‧ wall
556‧‧‧腔 556‧‧‧ cavity
600‧‧‧改裝燈泡 600‧‧‧Refit bulb
602‧‧‧第二光轉換元件 602‧‧‧Second light conversion element
604‧‧‧第一光轉換元件 604‧‧‧First light conversion element
606‧‧‧光源 606‧‧‧Light source
608‧‧‧底座 608‧‧‧Base
610‧‧‧改裝燈泡 610‧‧‧Refit bulb
612‧‧‧磷光體增強照明裝置 612‧‧‧phosphor enhanced lighting
630‧‧‧燈管 630‧‧‧ lamp
640‧‧‧燈管 640‧‧‧ lamp
660‧‧‧照明器具 660‧‧‧Lighting appliances
662‧‧‧磷光體增強照明裝置 662‧‧‧phosphor enhanced lighting
圖1a示意展示根據本發明之第一態樣之操作中之磷光體增強照明裝置之第一實施例之截面；圖1b示意展示未操作之第一實施例之截面；圖2a及圖2b示意展示磷光體增強照明裝置之第二實施例及第三實施例之截面；圖3a及圖3b示意展示具有非筆直光學路徑之磷光體增強照明裝置之實施例之截面； 圖4a、圖4b及圖4c示意展示磷光體增強照明裝置之第四、第五及第六實施例之截面；圖5a及圖5b示意展示磷光體增強照明裝置之第七及第八實施例之截面；圖6a示意展示根據本發明之第二態樣之改裝燈泡之實施例之兩個截面；圖6b示意展示根據本發明之第三態樣之燈管之實施例之兩個截面；及圖6c示意展示根據本發明之第四態樣之照明器具。 Figure 1a is a schematic cross-sectional view showing a first embodiment of a phosphor-enhanced illumination device in accordance with a first aspect of the present invention; Figure 1b is a schematic cross-sectional view showing a first embodiment of the operation; Figure 2a and Figure 2b are schematic representations A cross section of a second embodiment and a third embodiment of a phosphor enhanced illumination device; FIGS. 3a and 3b schematically illustrate a cross section of an embodiment of a phosphor enhanced illumination device having a non-straight optical path; 4a, 4b, and 4c schematically illustrate cross sections of the fourth, fifth, and sixth embodiments of the phosphor-enhanced illumination device; and FIGS. 5a and 5b schematically illustrate seventh and eighth embodiments of the phosphor-enhanced illumination device. Figure 6a is a schematic illustration of two sections of an embodiment of a retrofit bulb in accordance with a second aspect of the present invention; Figure 6b is a schematic illustration of two sections of an embodiment of a lamp according to a third aspect of the present invention; 6c schematically shows a lighting fixture according to a fourth aspect of the invention.
100‧‧‧磷光體增強照明裝置 100‧‧‧phosphor enhanced lighting
102‧‧‧光出口窗 102‧‧‧Light exit window
104‧‧‧第一色彩之光 104‧‧‧The first color of light
106‧‧‧觀看者 106‧‧‧ Viewers
110‧‧‧第二光轉換元件 110‧‧‧Second light conversion element
111‧‧‧間隙 111‧‧‧ gap
112‧‧‧第一光轉換元件 112‧‧‧First light conversion element
114‧‧‧預定義色彩分佈之光 114‧‧‧Predefined color distribution light
116‧‧‧光源 116‧‧‧Light source
Claims (15)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11016511 | 2011-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW201304209A true TW201304209A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101115852A TW201304209A (en) | 2011-05-06 | 2012-05-03 | Phosphor-enhanced lighting device, retrofit light bulb and light tube with reduced color appearance |
Country Status (1)
| Country | Link |
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| TW (1) | TW201304209A (en) |
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2012
- 2012-05-03 TW TW101115852A patent/TW201304209A/en unknown
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