200835880 九、發明說明： 【發明所屬之技術領域】 本發明係有關-種白光照明7L件，特別是麟由—可整理光束使之同 向發射之轉換裝置，和-複合透鏡調變光束，使統發射出的光束穿過上 述裝置後，形麟勻度高之_光束，並經由鱗之級轉換層轉換為高 色均之白光。 【先前技術】 • 現有之白光’如第1圖所示，其基本的發光模式是：光源1發光時， 中間射出的光束B亮度較亮，而側邊的光束亮度則較暗。 但上述之發光模式，其酬度不佳，對於平面驗晶顯示板而言並不 恰當，理想的狀態以達到如第2圖所示之均勻照明為較佳。 _ 健光束B2 g度躲統S轉半歡強度發射，其流鴨的佈局成 半球狀，若是其光健錄-反域折射平面時，贱_會在平面 反映出高對比光點，上述設計不適合在平面需求均勻光的場合使用，如需 求背光的液晶顯示屏幕。 • 卩背光照射的液晶面板而言，照明強度和傾角有關（第3圖所示），在 α方向上光強度為14，液晶面板ρ上的光強度Ip=]LcQSa。是知，為了 在液晶面板上得到均勻的照明，從白光來的光應該隨著偏角^^的增加而增 加(如圖中的光束B3)，這和第2圖所示白光發光的照明光束強度分佈相反。 此外，眾所周知，現行白光白光技術，主要使用螢光粉層，使白光發 出的藍光或紫外光經該螢光粉層反射後轉換，而產生含有藍光和紫外光之 白光B4。（請芩照第4圖所示），白光光源為螢光粉膠體F包圍時，光源s 至少有五個發光面，當白光發光時，其上方反光面發出的光和四個側面發 出的光通過螢光粉膠體F所產生的光混合成白光後向外射出。為了提高光 4 200835880 使側面光反射出的折射光， 效率，光源和f光轉體顧放置在—凹杯内， 和上端發光面所發出的光在同-方向上。 但由於螢光粉膠體F是混溶體，當光線β5射入凹杯綱後，反射的光 可能會在=縣_體F _被傭和魏，使制邊的_光束在主 上的貝獻無法發揮。而且，固化的螢光粉膠體F’因其形狀不易控制， 對光束的齡分布劈料較，使得㈣自光光品f 的控制。 又丁 φ 【發明内容】 本發月主要提供一種高均勻度白光照明元件，使白光光源射出 =光可以制均勻發射，以利平面賴均勻絲，及侧透鏡簡調變其 單光束偏角，及利用均等反應之光波轉換層轉化，使液晶面板上可 均勻的白光照明。 本發明之次—目的在提供-種高均勻度白光照明元件，藉由從白光光 源放射面所設凹杯形成光波轉換層賦形依據，使從白光來的光經過確定的 固化榮光粉膠體’產生品質穩定的白光發光面，進而在光學元件的作用下， ^ 於液晶面板上產生均勻的照明。 至於本發明之詳細構造 '顧雜、個與功效，則參照下列依附圖 所作之說明。 【實施方式】 請參照第5 _示，是在—體所連結轉換裝置4的底部，開設一比光 源40外形相形略大的凹孔41，在光源4〇形體外表和凹孔41之間形成光波 轉換層33，該轉換層33係由螢光粉膠330填入凹孔41後模製形成，所填 入螢光粉膠330形成_三維化的實體層面，膠f層的厚度取決於光源仙和 凹孔41之間的空隙互對表面距離為均等。統4〇從上表自4此發出的光 200835880 經過轉換層33作用後形成白光脱。相同光源4G從侧面43發出的光經過 反射再經轉換層33作用後，同樣形成白光WBs。 為了使白光WBs射向與白光觀相同的方向，在側向光的光路上， 置設-反射光學面42。所示係個—空氣槽侧，在反射光學面42上 的王反射白光WBS可以和白光WBc形成同一角向光束，射向複合透鏡44， 在它的作用下’形成均勻的白光WB。該空氣槽棚進一步可換 且該導光體折射率與複合透鏡44等元件相等為佳。 ' 明參…、第6圖所不，為了使光源的光束有均勻的分布，本發明進一步 在光源20的照射朝向’設有轉換裝置3，轉換裝置3設有一凹杯綱，凹 杯300的_面做歧叹射賴絲反射面31，歧繼可使祕或銘 材料，使光源2G側面發出的光施可與直上的光Bc相同，而經反射形成 同向射出’折射出的所有光束再進—步由_複合透鏡邪整合成為均 為了減少複合透鏡35入射面35a上的光反射，在凹杯腔體32内可填 入先學折射率和複合透鏡35 _或類似的導光光學材料柳。 對光波轉換層33而言，它的光源2〇為白光，白光可以是藍光 光。通過轉換層33的作用，可以產生白光。 ’、 所述轉節3為螢光粉膠謂彳⑽佈切刷的方式形成在複合透 、·兄35的入射面35a，光源2〇來的光經過轉換層33的作用產生白錢。 33 , 32 ,, ^真入光錢鱗和轉換層3_之膠合材料麵 光均勻度白光照明元件，如第7圖所示，係在白光光《的 先束射出方向上，設有-組多重焦點複合透鏡22，該多重焦點FC1、FC2、 200835880 FC3組成之複合透鏡22，至少由兩個以上不同曲率半徑的同心圓環狀透鏡 所組成，圖示所顯示的是由三個同心圓透鏡22a、22b、22c組成的複合透 鏡。該等同心圓透鏡22a、22b、22c的光學性能各不相同。從光源20發出 的光束，其中心部份光束21a被中心透鏡22a擴散成光束2如。侧邊的光束 21b被環形透鏡22b擴散成環狀光束23b，同樣地，環形透鏡22c則將光束 21c擴散為環狀錐形光束23c。 由此可知，選擇透鏡22a、22|3和22c的寬度和曲率，就可以改變其發 散的光束23a、23b和23c的發散角，藉由其射出的光束可以相互重疊 變出射光束_度分布就可以制和第3 _似的光束分布，以及光源2〇 的廢熱，雜細膽出，可在底料接_餘元件24，形成鮮及静 μ上述之複合透鏡22可使用由同心圓環菲淫晰獅）透鏡所組成(如 ^圖所示）’透過菲涅爾(Fresnel)透鏡的特性，使射出之光束強度為均 9 或者’亦侧—跡爾全相透鏡或-般微總組成(如第 y圖所不）。 配^述第5、6、8、9圖所述複合透鏡22、35、44與任―光源20皆可搭 一的透鏡與任何光一 ^ 所以任一稷合透鏡22、35、44皆 從MU Μ 自了各術魏㈣、藍域紫色光。 田所述可知’本發明之高均句度白光照明元件，其並未見諸八門使 用，合於專概之規定，懇請賜准專利， ' 神時，均應在本創作之細内，合先_。^說㈣額示所涵蓋之精 7 200835880 【圖式簡單說明】 第1圖為習見白光之光束分佈圖； 第2圖為白光理想均勻照明之光束分佈圖； 第3圖為白光之光束射向液晶面板之表示； 第4圖為習見白光白光之光束分佈圖； 第5圖為本發明實施例圖； 第6圖為本發明白光轉換另一實施圖； 第7圖為本發明透鏡實施方式之一圖； φ 第8圖為本發明透鏡實施方式之二圖； 第9圖為本發明透鏡實施方式之三圖。 【主要元件符號說明】 光源··.····· · 光束......... 光· · · · ...... 複合透鏡······· 同心圓透鏡· · · · · · 散熱元件....... 轉換裝置....... 凹杯··....... 光學反射面······ 凹杯腔體....... 轉換層........ 螢光粉膠...... · 膠層........ · · 卜 S、20、40 21a、21b、21c、23a、23b 23c、B、B2、B3200835880 IX. Description of the invention: [Technical field of the invention] The present invention relates to a 7L piece of white light illumination, in particular, a conversion device for collimating a beam of light in the same direction, and a composite lens to modulate the beam, After the beam emitted by the system passes through the above device, the beam is formed into a high-level beam, and is converted into a high-color white light through the scale conversion layer of the scale. [Prior Art] • The existing white light' As shown in Fig. 1, the basic light-emitting mode is that when the light source 1 emits light, the light beam B emitted in the middle is brighter, and the brightness of the light beam on the side is darker. However, the above-mentioned illumination mode has a poor reciprocity, which is not suitable for a planar crystal display panel, and an ideal state is preferable to achieve uniform illumination as shown in Fig. 2. _ The beam B2 g degree hides the S-turned half-intensity emission, and the layout of the flowing duck is hemispherical. If it is the light-recording-anti-domain refraction plane, 贱_ will reflect the high contrast spot in the plane, the above design It is not suitable for use in applications where the plane requires uniform light, such as a liquid crystal display screen that requires backlighting. • For a liquid crystal panel that is backlit, the illumination intensity is related to the tilt angle (shown in Figure 3), the light intensity is 14 in the α direction, and the light intensity Ip=]LcQSa on the liquid crystal panel ρ. It is known that in order to obtain uniform illumination on the liquid crystal panel, the light from the white light should increase as the off angle ^^ increases (the beam B3 in the figure), and the illumination beam of the white light illumination shown in Fig. 2 The intensity distribution is reversed. In addition, it is known that the current white light white light technology mainly uses a phosphor powder layer, so that blue light or ultraviolet light emitted from white light is reflected by the phosphor powder layer and converted to produce white light B4 containing blue light and ultraviolet light. (Please refer to Figure 4) When the white light source is surrounded by the phosphor colloid F, the light source s has at least five light-emitting surfaces. When the white light is illuminated, the light emitted from the upper reflective surface and the light emitted from the four sides are The light generated by the phosphor powder F is mixed into white light and then emitted outward. In order to increase the light 4 200835880, the refracted light reflected by the side light, the efficiency, the light source and the f-light rotating body are placed in the concave cup, and the light emitted by the upper end emitting surface is in the same direction. However, since the phosphor powder colloid F is a miscible body, when the light β5 is injected into the concave cup, the reflected light may be in the = county _ body F _ was commissioned and Wei, so that the edge of the _ beam on the main shell Can not play. Moreover, the cured phosphor colloid F' is difficult to control due to its shape, and the age distribution of the beam is relatively small, so that (4) control of the photo-product f. Further φ φ [Summary of the Invention] This month mainly provides a high uniformity white light illumination component, so that the white light source emits light = light can be uniformly emitted, so that the plane depends on the uniform filament, and the side lens is simply adjusted to change its single beam angle. And the light wave conversion layer is transformed by the equal reaction, so that the white light can be uniformly illuminated on the liquid crystal panel. The second objective of the present invention is to provide a high-uniformity white light illumination element, which is formed by forming a light wave conversion layer from a concave cup provided on a radiation surface of a white light source, so that the light from the white light passes through the determined curing glory powder colloid' Produces a stable white light emitting surface, which in turn produces uniform illumination on the liquid crystal panel under the action of optical components. As for the detailed construction of the present invention, the following descriptions are made with reference to the accompanying drawings. [Embodiment] Referring to FIG. 5, a recess 41 which is slightly larger than the outer shape of the light source 40 is formed at the bottom of the body-connecting conversion device 4, and is formed between the outer surface of the light source 4 and the recess 41. The light conversion layer 33 is formed by molding the fluorescent powder 330 into the concave hole 41, and is filled with the fluorescent powder 330 to form a three-dimensional solid layer. The thickness of the adhesive layer depends on the light source. The gap between the fairy and the recess 41 is equal to the surface distance. The light emitted from the above table from the above table 200835880 After the conversion layer 33 acts to form a white light off. After the light emitted from the side surface 43 of the same light source 4G is reflected and applied through the conversion layer 33, white light WBs are also formed. In order to cause the white light WBs to be directed in the same direction as the white light, the optical surface 42 is disposed on the optical path of the lateral light. On the air-groove side, the king-reflected white light WBS on the reflective optical surface 42 can form the same angular beam as the white light WBc, and is directed toward the composite lens 44, under which it forms a uniform white light WB. The air sump is further interchangeable and the refractive index of the light guide is preferably equal to that of the composite lens 44 or the like. In the present invention, in order to make the light beam of the light source have a uniform distribution, the present invention further provides a conversion device 3 in the illumination direction of the light source 20, and the conversion device 3 is provided with a concave cup and a concave cup 300. The _ 做 射 射 射 反射 反射 反射 反射 反射 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Further, the step-by-step integration of the composite lens is to reduce the light reflection on the incident surface 35a of the composite lens 35, and the concave cup cavity 32 can be filled with the first-precision refractive index and the composite lens 35 or similar light guiding optics. Material willow. For the light wave conversion layer 33, its light source 2 is white light, and white light may be blue light. White light can be generated by the action of the conversion layer 33. The knuckle 3 is formed by the fluorocarbon glue 彳 (10) cloth cutting brush formed on the incident surface 35a of the composite permeable, brother 35, and the light from the light source 2 passes through the conversion layer 33 to generate white money. 33, 32,, ^ True light scale and conversion layer 3_ glue material surface uniformity white light illumination component, as shown in Figure 7, in the white light "the first beam emission direction, set - group The multifocal composite lens 22, the composite lens 22 composed of the multiple focus FC1, FC2, 200835880 FC3, is composed of at least two concentric annular lenses of different radii of curvature, and the figure shows three concentric circular lenses. A composite lens composed of 22a, 22b, and 22c. The optical performance of the equivalent spherical lenses 22a, 22b, 22c are different. The light beam emitted from the light source 20 is diffused into a light beam 2 by a central portion 22a. The side beam 21b is diffused by the ring lens 22b into an annular beam 23b, and similarly, the ring lens 22c diffuses the beam 21c into an annular cone beam 23c. It can be seen that by selecting the width and curvature of the lenses 22a, 22|3, and 22c, the divergence angles of the diverging beams 23a, 23b, and 23c can be changed, and the beams emitted by the beams 22a, 23b, and 23c can be overlapped to each other to change the beam distribution. It can be used to make the 3rd-like beam distribution, as well as the waste heat of the light source 2〇, which can be used in the bottom material to form the fresh and static μ. The above composite lens 22 can be used by the concentric ring phenanthrene. The composition of the lens (as shown in the figure) 'through the characteristics of the Fresnel lens, so that the intensity of the emitted beam is 9 or 'also side--the full-surface lens or the general composition (as in the y diagram). The composite lens 22, 35, 44 and any of the light sources 20 can be combined with any light, so that any of the combined lenses 22, 35, 44 are from the MU. Each technique Wei (four), blue field purple light. As described in the field, the high-equal-degree white light illumination component of the present invention is not used in various applications, and is subject to the provisions of the special regulations. Please grant a patent, 'God, should be within the scope of this creation, First _. ^Speaking (4) The fines covered by the amount of money 7 200835880 [Simple description of the diagram] Figure 1 is the beam distribution map of Xiguang Baiguang; Figure 2 is the beam distribution diagram of the ideal uniform illumination of white light; Figure 3 is the beam direction of white light. 4 is a beam distribution diagram of a white light white light; FIG. 5 is a view of an embodiment of the present invention; FIG. 6 is another embodiment of white light conversion according to the present invention; Fig. 8 is a second view of a lens embodiment of the present invention; Fig. 9 is a third view of a lens embodiment of the present invention. [Explanation of main component symbols] Light source ········ · Beam......... Light · · · · ...... Composite lens ······· Concentric lens · · · · · · Heat dissipating components.... Conversion device....... Concave cup ··....... Optical reflective surface······ Concave cup cavity... .... Conversion layer........ Fluorescent powder glue... · Adhesive layer........ · · Bu S, 20, 40 21a, 21b, 21c, 23a , 23b 23c, B, B2, B3
Bs、20s、BC 22、35、44 22a、22b、22c 24 3>4 300 31 32 33 330 340 200835880 光學材料……· · • _ · · 350 入射面······ 側向光······ • · · · 40s 上表面...... • · · · 40c 空氣槽....... • · · · 400 凹孔······· • · · · 41 反射光學面···· • · · · 42 側面······ · • · · · 43 微透鏡······ • · · · 5 光強度······ • · · · Iα ' Ip 液日日面板· · · · · • · · · ρ 偏角·...... • · · · α 螢光粉膠體···· • · · · F 白光....... • · · - WB、WBs、WBc、B4 焦點······ · • · · · FQ、FC2、FC3Bs, 20s, BC 22, 35, 44 22a, 22b, 22c 24 3> 4 300 31 32 33 330 340 200835880 Optical material...·· • _ · · 350 Incident surface ······ Side light·· ···· • · · · 40s Upper surface... • · · · 40c Air tank....... • · · · 400 recessed hole ········· · · · · 41 Reflective optical surface ···· • · · · 42 Side ······ · · · · · 43 Microlens ······· · · · · 5 Light intensity ······· • · · · Iα ' Ip Liquid Day Panel · · · · · · · · · ρ Deflection ·... • · · · α Fluorescent Powder Colloid ···· • · · · F White Light..... .. • · · - WB, WBs, WBc, B4 Focus ······· · · · · · FQ, FC2, FC3