200949297 九、發明說明： 【發明所屬之技術領域】 本發明係有關於微透鏡，特別是有關於一種具有抗 反射微結構的微透鏡。 【先前技術】 微透鏡常用於CMOS、CCD等固態影像感測裝置， 用以提升入射光的利用效率。然而如果在透鏡表面未作 〇 任何處理，入射光會因為不同介質間的折射率的差異及 入射角等因素，會有一部分的光因為全反射的現象而損 失，除了會降低固態影像感測裝置的感度之外，反射光 經過其他物體再反射而再度入射至固態影像感測裝置 時，會發生鬼影等問題。 為了解決上述問題，業界已發表各種在微透鏡上塗 裝或鍍上抗反射膜的技術，雖然大多可得到令人滿意的 抗反射效果，但是在製程上需要額外增加塗裝、鍍膜的 設備、材料、製程步驟等等而增加製造成本，或是在製 程中反而造成微透鏡本身性質的劣化，或是這些薄膜本 身會帶來新的問題點如吸濕性等。 【發明内容】 有鑑於此，本發明的實施例是提供一種微透鏡，可 解決上述習知技術所面臨的問題。 本發明的一實施例是提供一種微透鏡，包含：一透 鏡本體，具有一曲面，對具有一特定波長範圍的光具有 0978-A33483TWF/2007-046/dwwang 5 200949297 透光性；以及—凹凸結構於上述曲 定波長範圍的光具有透光性，上述凹 =士*述特 單元凹凸體，每一個單元凹凸體中的任：構:、有锻數個 ^ Ϊ -5-A t 订一個點之 Fal 上述特定波長範圍的最小值。 、 【實施方式】 明顯=本：明之上述和其他目的、特徵、和優點能更 φ Μ 文特舉出較佳實施例，並配合所附Η 4 作詳細說明如下： α听附圖式， 請參考第1Α圖，為一剖面圖，係 實施例讀透鏡及其一應用例。S 本發明一較佳 一於丄 凹凸1口構20 ’用以接收光50至立下的 本二t:rrvo°，光50具有一特定波長範圍。在 =:具有通常知識者在實二= 透鏡本體H)具有-曲面1〇a，對光5〇具有 j質可以是環氧樹脂、二氧切(siliea)、膠 玻璃⑽SS)、塑膠(p〗asti咐材料。凹凸結構2 ) 面10a上，亦對光50具有透光性。凹凸結構20且有: 數個單元凹凸體21，每一相留- 有複 點之間_，是小凸的任何二個 %川的波長靶圍的最小值，以使 〇978-A33483TWF/2007-046/d' wwang 6 200949297 凹凸結構20得以具有抗反射、提高光5〇的穿透率的效 果。由於上述本實施例中的％ 5〇的波長範圍為 1〜775nm，故在本實施例中，每一個單元凹凸體2丨中 的任何二個點之間的距離是小於391麵；而在其他實施 例中若適用的光50的波長範圍有所改變時，對應的單元 凹凸體21的大小也會隨之改變而小於光 的最小值。 "又·固 〇 第圖是顯示第1A圖中的其中一個單元凹凸體η ΪΓ所在的部分曲面1Ga的放大剖面圖。在本實施例中，200949297 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to microlenses, and more particularly to a microlens having an anti-reflection microstructure. [Prior Art] Microlenses are commonly used in solid-state image sensing devices such as CMOS and CCD to improve the utilization efficiency of incident light. However, if there is no treatment on the surface of the lens, the incident light will be lost due to the difference in refractive index between different media and the angle of incidence, etc., and some of the light will be lost due to the phenomenon of total reflection, except that the solid-state image sensing device will be lowered. In addition to the sensitivity, when the reflected light is reflected by other objects and re-reflected to the solid-state image sensing device, ghosting and the like may occur. In order to solve the above problems, various techniques for coating or plating an anti-reflection film on a microlens have been published in the industry. Although most of them can obtain a satisfactory anti-reflection effect, an additional device for coating and coating is required in the process. Materials, process steps, etc. increase the manufacturing cost, or cause deterioration of the properties of the microlenses themselves in the process, or the films themselves may bring new problems such as hygroscopicity. SUMMARY OF THE INVENTION In view of the above, embodiments of the present invention provide a microlens that can solve the problems faced by the above-described prior art. An embodiment of the present invention provides a microlens comprising: a lens body having a curved surface having light transmittance for light having a specific wavelength range of 0978-A33483TWF/2007-046/dwwang 5 200949297; and a concave-convex structure The light in the above-mentioned predetermined wavelength range has light transmissivity, and the concave/concave unit has irregularities in the unit, and each of the unit asperities has a structure: a forged number of ^ -5-A t Fal The minimum value of the above specific wavelength range. [Embodiment] It is obvious that the above and other objects, features, and advantages of the present invention can be further exemplified, and the detailed description is as follows with the accompanying Η 4: Referring to Figure 1 for a cross-sectional view, an embodiment read lens and an application example thereof. A preferred embodiment of the present invention is for receiving a light 50 to a standing second t:rrvo°, the light 50 having a specific wavelength range. In =: with the usual knowledge in the real two = lens body H) has a curved surface 1 〇 a, the light 5 〇 has j quality can be epoxy resin, siliea, plexiglass (10) SS), plastic (p 〗 〖Asti 咐 material. Concave structure 2) On the surface 10a, the light 50 is also translucent. The concave-convex structure 20 has: a plurality of unit asbestos bodies 21, each of which has a minimum of - between the complex points _, which is a minimum value of the wavelength target circumference of any two of the % chuan, so that 〇978-A33483TWF/2007 -046/d' wwang 6 200949297 The uneven structure 20 has an effect of resisting reflection and increasing the transmittance of light 5 。. Since the wavelength range of % 5 上述 in the above embodiment is 1 to 775 nm, in the present embodiment, the distance between any two points in each of the unit asbestos 2 丨 is less than 391 faces; In the embodiment, if the wavelength range of the applied light 50 is changed, the size of the corresponding unit asbestos 21 is also changed to be smaller than the minimum value of the light. "又固固〇 The figure is an enlarged cross-sectional view showing a partial curved surface 1Ga in which one of the unit concave and convex bodies η 第 in Fig. 1A is located. In this embodiment,
單凡凹凸體21的任柯-舶赴3- AA ”士 η 一個點之間的距離的最大值即 jiB圖所示的截面寬度w，即單元凹凸體2 戶 W是小於光5 0的波長範圍的悬丨 又 "又π靶固的取小值。另外， 凹體21之距離，亦要小於朵m“ 市相鄰的凸 σ , J罟J於先的波長範圍的最小值。 另外，凹凸結構20對光50的折射率，較好為介於 光50的入射端的介質對光5 ' # 50心私玄 折射率舆透鏡本體10對 尤50的折射率之間，可螫 去丁 光5〇順利地經由凹凸έ士谨 2〇而牙透透鏡本體1〇，而右 '、、°構 反射n W “ 凹凸結構20發輝其抗 夂射詨同先50的穿透率的效果。 凸結構20對光50的折射率，β 也州中，凹 率與透鏡本體〗。對光5::折:=,氣對光5。的折射 在第ΙΑ、1Β圖所示的實施例中，凹凸 — 一個單元凹凸體21均為相對於 …冓0的母 如第lBffiM·千;曲面l〇a為凸起的結構。 =1: 70凹凸體21的高度方向Η是垂直： 其所在的曲面10a的切線 ϋ 於 Π 而早兀凹凸體21的形 0978-A33483TWF/2007-046/dwwang 7 200949297 狀，較好為使其垂直於高度方向Η的截面積沿著高度方 向Η而變化。較好為如第1Β圖所示，高度較高的垂直於 高度方向Η的截面積入2是小於高度較低的垂直於高度方 向Η的截面積Α2，有助於凹凸結構20發輝其抗反射、 提高光50的穿透率的效果。另外，在另一實施例中，單 元凹凸體21的高度方向Η是平行於第1Α圖所示微透鏡 的光軸。在第ΙΑ、1Β圖所示的實施例中，單元凹凸體 21為球狀的凸起物；但在其他實施例中，單元凹凸體21 ^ 亦可以是錐狀、梯形等截面積會隨高度變化、較好為變 小的凸起物。 在第ΙΑ、1Β圖中，單元凹凸體21的大小相同且成 週期性的排列，且週期可為固定值或非固定值；而在其 他實施例中，每一個單元凹凸體21的大小可以完全不 同、或不完全相同，視需求而定。 另外，凹凸結構20的材質可以是環氧樹脂、二氧化 ^ 石夕（silica)、膠材（glue)、玻璃（glass)、塑膠(plastic)等材料， 而可以與透鏡本體10具有相同材質或不同材質；但較好 為凹凸結構20與透鏡本體10具有相同材質，以可以簡 化製程與材料的使用。 在第1A圖所示的微透鏡的製造方面，一較佳的製程 事先提供一模仁，其具有第一圖所示的透鏡本體10與凹 凸結構20的反相圖形。接下來，將上述微透鏡用材料之 一注入該模仁的圖形中成形，再依需求進行硬化、脫模、 表面修整等步驟而成為第1A圖所示的微透鏡。藉由上述 0978-A33483TWF/2007-046/dwwang 8 200949297 200949297 製程，可一 二人形成透鏡本體10及其曲面l〇a上之具有抗 反射功能的凹凸結構20，可以簡化製程步驟並節省材： 的成本因而降低本發明較佳實施例之微透鏡的製 造成本。 、 除此之外，可先提供適用於製造透鏡本體10的模 仁’注入上述微透鏡㈣料後，再依需求進行硬化、脫 =、表面修整等步驟而先形成不具凹凸結構20的透鏡本 = f下來’再經由轉印、屢印等技術，將凹凸結構 =於透鏡本體10的曲面10a上。藉此製程，透鏡本 體U凸結構20就可以是相同材質或不同材質。 ⑴Λ外’可如上所述先形成不具凹凸結構2G的透鏡本 t ##由乾如電漿_)、絲刻等技術， 形成單元凹凸體21。但是藉由颠刻技術，較 ❹ 程須在較高溫度下進行，如以有:：位置，且酬^ ^ ^ 有機材料等耐熱性降低的 材狀成透鏡本體10時，有使其品質發生變 故對凹凸結構20的精密度有嚴格要求、及 用二 凹凸結構2〇。 』不建彻木用颠刻的製程來形成 #之^二過本發明較佳實施例之微透 :ΐρ本 性…，而到達發光二極體晶片 透鏡是作㈣^ 乃J⑻的收光透鏡。另外，如 的需求例如第ΙΑ圖所示的透光："面上存在抗反射 所不的透先性石夕谬30與發光二極體 0978-A33483TWF/2007-046/dwwang 200949297 晶片100之間的介面， 的抗反射結構例如第lA 1 _面开7成類似凹凸結構20 凸結構4。。此時，凹凸:二凸體心凹 地較好為介於光50的入射端的 、:：率’同樣 發光二極體晶片_對光50的折射率之門〇 =射率與 順利地經由凹凸結構4。而穿到達發光二極體曰片助二50 而有助於凹凸結構40發輝其抗 〇 φ 率的效果。而在本實施例中，凹凸結構 射率，是介於透光性矽膠3〇 先50的折 極體晶片ΗΚ)對光50的折射率之間。、斤射率與發光二 在圖所示實施例中’本發明之 先二極體晶片雇的收光透鏡；而在其他實施例中1 可藉由類似於第1α圖所示結構μ其他適當結構，將I 發明之微透鏡是作為其他裝置例如CM〇s或其他種類的 影像感㈣、太陽能電池、或其他光學或 光透鏡。 不直07叹 在第1A、1B圖所示的實施例中，凹凸結構20的每 们單元凹凸體21均為相對於曲面i 〇a為凸起的結構。 而在其他實施例例如第2圖所示的實施例中，微透鏡是 在透鏡本體10的曲面10a上具有波狀的凹凸結構60，即 凹凸結構60具有連續、交錯的凸狀體61與凹狀體62， 其中凸狀體61的材質可與透鏡本體1〇的材質相同或相 異。而第2圖所不結構，視需求亦可修正為連續排列數 個凸狀體61之後、再接著排列一或複數個凹狀體62、又 0978-A33483TWF/2007-046/dwwang 10 200949297 再接著排列-或複數個凸狀體61 ;另外，本發明所屬技 術領域中具有通常知識者可依其需求，任意排列凸狀體 61與凹狀體62。而關於凸狀體61與凹狀體62的較佳或 建議的形狀、尺寸等、以及凹凸結構6〇的光學性質等， 皆相同或等義M 1A、1B圖所示的單元凹凸體2|，而 不再重複敛述。The maximum value of the distance between a point of the 凹凸 - 舶 3- 3- 3- 3- 3- 3- 3- 一个 一个 一个 一个 一个 一个 一个 一个 η η η η η 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元 单元The range of the dangling is also a small value of the π target solid. In addition, the distance of the concave body 21 is also smaller than the minimum value of the wavelength range of the adjacent convex σ and J罟J. In addition, the refractive index of the concave-convex structure 20 with respect to the light 50 is preferably between the medium of the incident end of the light 50, the refractive index of the light 5' #50, the private refractive index, the refractive index of the lens body 10, and 50. Ding Guang 5〇 smoothly passed through the embossed gentleman 2〇 and the lens lens body 1〇, while the right ', °° reflection n W“ the concave-convex structure 20 shines its anti-radiation and the first 50 transmittance The effect of the convex structure 20 on the refractive index of the light 50, β is also in the state, the concave ratio and the lens body. The reflection of the light 5:: folding: =, the gas to the light 5. The implementation shown in the first and second diagrams In the example, the concavity and convexity - one unit concavo-convex body 21 is a mother with respect to ... 冓0 as the first lBffiM·th; the curved surface l〇a is a convex structure. =1: 70 the height direction of the concave-convex body 21 is vertical: The tangent of the curved surface 10a is Π Π and the shape of the concave-convex body 21 is 0978-A33483TWF/2007-046/dwwang 7 200949297, preferably the cross-sectional area perpendicular to the height direction is changed along the height direction. Preferably, as shown in FIG. 1 , the cross-sectional area of the height higher than the height direction 入 is 2 is smaller than the height lower than the height. The cross-sectional area Α2 to the crucible contributes to the effect of the relief structure 20 illuminating its anti-reflection and increasing the transmittance of the light 50. In addition, in another embodiment, the height direction 单元 of the unit asperity body 21 is parallel to the The optical axis of the microlens shown in Fig. 1 shows that the unit asbestos 21 is a spherical protrusion in the embodiment shown in Fig. 1 and Fig. 1; however, in other embodiments, the unit asperity 21 ^ may also be The cross-sectional area such as a cone shape or a trapezoidal shape changes with height, and is preferably a small protrusion. In the first and second diagrams, the unit asbestos bodies 21 have the same size and are periodically arranged, and the period can be a fixed value. Or other non-fixed values; in other embodiments, the size of each of the unit asperities 21 may be completely different or not identical, depending on the requirements. In addition, the material of the concave-convex structure 20 may be epoxy resin, oxidized ^ A material such as a silica, a glue, a glass, or a plastic may have the same material or a different material as the lens body 10; however, it is preferable that the concave-convex structure 20 has the same shape as the lens body 10. Material to simplify process and Use of the material In the manufacture of the microlens shown in Fig. 1A, a preferred process is provided in advance with a mold having an inverted pattern of the lens body 10 and the relief structure 20 shown in the first figure. Forming the above-mentioned microlens material into a pattern of the mold core, and then performing the steps of hardening, demolding, surface finishing, etc. to form the microlens shown in Fig. 1A. By the above-mentioned 0978-A33483TWF/2007 -046/dwwang 8 200949297 200949297 The process can form the concave-convex structure 20 with anti-reflection function on the lens body 10 and its curved surface l〇a, which can simplify the process steps and save the cost of the material: The manufacturing cost of the microlens of the embodiment. In addition, the lens body suitable for manufacturing the lens body 10 may be first injected into the microlens (four) material, and then subjected to steps of hardening, stripping, surface finishing, etc., to form a lens having no concave-convex structure 20 first. = f down', the concave-convex structure is again applied to the curved surface 10a of the lens body 10 via a technique such as transfer or repeated printing. By this process, the lens body U convex structure 20 can be the same material or different materials. (1) The outer surface of the lens can be formed as described above by forming a lens irregular body 21 by a technique such as drying as a plasma, etc., by a lens such as a plasma. However, by the engraving technique, the process must be carried out at a relatively high temperature, for example, when there is a:: position, and the heat-reducing material such as an organic material is formed into the lens body 10, the quality thereof occurs. The precision of the uneven structure 20 is strictly required, and the two concave-convex structures are used. The construction of the light-emitting diode lens is a light-receiving lens for (4) and is J (8). The lens is formed by the micro-transparent process of the preferred embodiment of the present invention. In addition, the demand such as the light transmission shown in the figure: "There is anti-reflection on the surface of the permeable stone 谬 谬 30 and the light-emitting diode 0978-A33483TWF/2007-046/dwwang 200949297 wafer 100 The interfacial, anti-reflective structure, for example, the 1A 1 _ face is 7 into a convex structure 4 similar to the concave-convex structure 20 . . At this time, the unevenness: the convex surface of the two convex bodies is preferably at the incident end of the light 50: the rate 'the same light-emitting diode wafer _ the threshold of the refractive index of the light 50 = the radiance and smoothly through the concave-convex structure 4. And wearing the light-emitting diode chip to help the second 50 helps the concave-convex structure 40 to evoke its anti-〇 φ rate effect. In the present embodiment, the uneven structure ratio is between the refractive index of the light-transmissive tantalum 3, which is 50, and the refractive index of the light 50. , the jerk rate and the illuminating light in the embodiment shown in the figure 'the dichroic lens employed in the first diode chip of the present invention; and in other embodiments 1 may be other suitable by the structure μ similar to the first α figure The structure, the microlens of the invention I is used as other devices such as CM〇s or other kinds of image senses (4), solar cells, or other optical or optical lenses. In the embodiment shown in Figs. 1A and 1B, each of the unit asbestos bodies 21 of the uneven structure 20 is convex with respect to the curved surface i 〇 a. In other embodiments, such as the embodiment shown in FIG. 2, the microlens has a corrugated relief structure 60 on the curved surface 10a of the lens body 10, that is, the relief structure 60 has continuous, staggered convex bodies 61 and concaves. The shape of the convex body 61 may be the same as or different from the material of the lens body 1 . In the second figure, the structure is not modified, and may be modified to continuously arrange a plurality of convex bodies 61, followed by one or a plurality of concave bodies 62, and 0978-A33483TWF/2007-046/dwwang 10 200949297. Arranging - or a plurality of convex bodies 61; in addition, those having ordinary knowledge in the art to which the present invention pertains may arbitrarily arrange the convex bodies 61 and the concave bodies 62 according to their needs. The preferred or suggested shape, size, and the like of the convex body 61 and the concave body 62, and the optical properties of the concave-convex structure 6〇 are the same or equivalent to the unit asperity body 2 shown in the M 1A, 1B diagrams. And no longer repeats.
在第ΙΑ、1B圖所示的實施例卡，凹凸結構2〇的每 一個單元凹凸體21均為相對於曲面⑽為凸起的結構。 而在又另-實施例例如第3圖所示的實施例中，形成於 微透鏡的透鏡本體1〇的曲面1〇a上的凹凸結構7〇，是具 f相對於曲面l〇a為凹下的單元凹凸體72。另外，關二 早兀凹凸體72的較佳或建議的形狀、尺寸等、以及凹凸 結構70的光學性質等，皆相同或等義於第ΐΑ、ΐβ圖所 不的單元凹凸體21，而不再重複敘述。 在第1Α、1Β圖所示的實施例中，微透鏡為一平凸透 鏡；而在其他實施例中的微透鏡亦可為雙凸透鏡或凹凸 透鏡，且第1Α、2、3圖所示的各種型態的凹凸結構均可 視需求應用於雙凸透鏡及/或凹凸透鏡的曲面上。 在第1Α、1Β圖所示的實施例中，微透鏡為一平凸透 鏡；而在其他實施例中的微透鏡例如第4 鏡，則為-平凹透鏡。帛4圖所示的微透鏡是斤^^ 鏡本體15與一凹凸結構8〇，透鏡本體15具有一曲面 15a ’而凹凸結構80則是位於曲面15&上。凹凸結構 具有複數個單元凹凸體81。而第4圖所示的透鏡本體 〇978-A33483TWF/2007-046/dw' wang 11 200949297 15、凹凸結構8〇的光學性質及材質等，還有 81的較佳或建議的形狀、尺寸等，皆相同或等義於第 圖所示的透鏡本體1G、凹凸結構2q、與單元凹 凸體21，而不再重複敘述。 另H本發明所屬技術領域中具有通常知 2:;見其需求將第4圖所示的凹凸結構8〇置換為 2或3圖所示的凹凸結構6〇或7〇。 φIn the embodiment cards shown in Fig. 1 and Fig. 1B, each of the unit asbestos 21 of the uneven structure 2 is a convex structure with respect to the curved surface (10). In still another embodiment, such as the embodiment shown in FIG. 3, the uneven structure 7〇 formed on the curved surface 1〇a of the lens body 1〇 of the microlens is concave with respect to the curved surface l〇a. Lower unit asperity 72. In addition, the preferred or suggested shape, size, and the like of the second and second ridges 72, and the optical properties of the embossed structure 70 are the same or equivalent to the unit embossed body 21 of the ΐΑβ, ΐβ diagram, and not Repeat the description. In the embodiment shown in FIGS. 1 and 1 , the microlens is a plano-convex lens; and in other embodiments, the microlens may be a lenticular lens or a meniscus lens, and the various types shown in FIGS. The concave and convex structures of the state can be applied to the curved surface of the lenticular lens and/or the meniscus lens as required. In the embodiment shown in Figs. 1 and 1 , the microlens is a plano-convex lens; and in other embodiments, the microlens such as the 4th mirror is a plano-concave lens. The microlens shown in Fig. 4 is a mirror body 15 and a concave-convex structure 8, the lens body 15 has a curved surface 15a' and the concave-convex structure 80 is located on the curved surface 15& The uneven structure has a plurality of unit asbestos 81. The lens body 〇978-A33483TWF/2007-046/dw' wang 11 200949297 15 shown in Fig. 4, the optical properties and materials of the uneven structure 8 ,, and 81 preferred or suggested shapes and sizes, The lens body 1G, the uneven structure 2q, and the unit asperity body 21 shown in the same figure are the same or equivalent, and will not be described again. Further, in the technical field to which the present invention pertains, it is known that 2: see the demand for replacing the uneven structure 8〇 shown in Fig. 4 with the uneven structure 6〇 or 7〇 shown in Fig. 2 or 3. Φ
G 在第4圖所不的實施例中，微透鏡為— 中的微透鏡亦可為雙凹透鏡或凸：透 的凹凸結構均可視雲炎廡田i〜、 曲面上。了視而求應用於雙凹透鏡及/或凸凹透鏡的 藉由本發明，係提供一種微透鏡 習知技術所面臨的問題。 以％决刖述 以發明已以較佳實施例揭露如上，然其並非用 發明，任何本制所屬技術領域中具有通常知 ，者’在不脫離本發明之精神和範圍内，當可作之 更動與潤飾，因此本發明之保護範圍當：二 利範圍所界定者為準。 ㈣之申明專 0978-A33483TWF/2007-046/dwwang 200949297 【圖式簡單說明】 第1A圖為一剖面圖，係顯示本發明較佳實施例之微 透鏡及其—應用例。 第圖為第1A圖所示的其中一個單元凹凸體u 及其所在的部分曲面10a的放大剖面圖。 圖為一剖面圖，係顯示第…所示之 一變化形式。 另-一剖面圖，係顯示第1A圖所示之微透鏡的 又另 第4圖為一剖面圖，係顯示第1A圖所示之微透鏡的 一變化形式- 【主要元件符號說明】 10、15〜透鏡本體； l〇a、15a〜曲面； 20、 40、60、70、80〜凹凸結構； 21、 41、72、81〜單元凹凸體； 3〇〜透光性矽膠； 50~光； 61〜凸狀體； 62〜凹狀體； 100〜發光二極體晶片； Η〜南度方向； w〜寬度。 0978-A33483TWF/2007-046/d, wwang 13In the embodiment shown in Fig. 4, the microlens in which the microlens is - may also be a biconcave lens or a convex: the perforated structure may be visualized on the surface of the cloud. The present invention is directed to a biconcave lens and/or a convex-concave lens. The present invention provides a problem faced by conventional techniques of microlenses. The invention has been described in terms of a preferred embodiment, and is not intended to be exhaustive, and is not to be construed as a part of the scope of the invention. The movement and retouching, therefore, the scope of protection of the present invention is as defined in the scope of the two benefits. (4) A statement of the specification 0978-A33483TWF/2007-046/dwwang 200949297 [Simplified description of the drawings] Fig. 1A is a cross-sectional view showing a microlens according to a preferred embodiment of the present invention and an application example thereof. The figure is an enlarged cross-sectional view of one of the unit asbestos u and its partial curved surface 10a shown in Fig. 1A. The figure is a cross-sectional view showing a variation shown by the .... Another cross-sectional view showing another embodiment of the microlens shown in FIG. 1A is a cross-sectional view showing a variation of the microlens shown in FIG. 1A - [Explanation of main component symbols] 15~Lens body; l〇a, 15a~ curved surface; 20, 40, 60, 70, 80~ concave and convex structure; 21, 41, 72, 81~ unit concave and convex body; 3〇~translucent silicone; 50~ light; 61 ~ convex body; 62 ~ concave body; 100 ~ light-emitting diode wafer; Η ~ south degree direction; w ~ width. 0978-A33483TWF/2007-046/d, wwang 13