200823561 九、發明說明： 【發明所屬之技術領域】 本發日縣有§自背綠裝置’尤其係指—種應服液晶顯 器之背光板裝置。 【先前技術】 隨著家電產品電腦化的趨勢，為符合顯示器在重量要輕、 尺寸要薄、輻射要低等需求、具有尺寸薄、高解析度、低^射 的液晶顯示H(LCD) ’由於其製造成本下降，近年來成為顯示 器市場的主流。 然而，液晶本身不發光所以LCD必須借由外來光源以提 供光能如背光板。背光板係為液晶顯示器之關鍵零組件，其亮 度充份且均勻之光源，使液晶面板顯示影像。_ 而現一般習知之背光板依光源位置大致可分為「側光式」 及「直下式」設計’其中侧光式設計係將燈管之光源設置於液 晶面板側邊，再利用導光板控製光束行進方向，使光束投射至 面板下方之擴散板而提供液晶面板均勻光束如請參閱圖1。 一般而言，現存背光板照明機實施時有缺點如下： 1·當發光二極體侧(LED)向射入導光板時，光線經由折射進入 再進入導光板，使發光二極體光源(LED)未能充份發揮，造 成光能的浪費。 2·現存背光板照明機構如圖一屬於多層結構製造組裝，程序較 煩，製作成本高。 200823561 基於習用背光板的缺點，本案發明人提出一種背光板結 構’該背光板運用光學元件產生扇形光束，而扇形光束在掠射 反射面上反射驗晶面板，使光轉充份有效的彻並產生 勻的平面光源。 【發明内容】 〜 本發明之一目的，係提供一種背光板結構，利用光學元 件之設置，以減少照賴失，而達職光效率背光照明。 本發明之另一目的，係提供一種背光板結構，利用反射光 予兀件之設置，而達到高度簡化的薄型結。 本發明之又一目的，僚提供一種背光板結構，可利用不同 光學元件之組合之設置，而達到高機構穩定性。 、為達上述目的本發明之背光板裝置包括至少一個照明光 =列’它由至少-個光源和相細絲飾光學組成，·光源 ^出發散光照明光經整形光學變為扇形薄光束、一微小反射光 件陣顺成的騎反射面，健輯該面人㈣扇形 ^反射到基本與之垂麵方向上、—絲漫咖，它是一雛 垔光學結構的表面，將掠射之入射光轉變成向各個方向漫射 的’均勻的液晶屏照明光。 【實施方式】 為使能對本發明之目的，形狀構造裝置特徵及功效作更進 二步的認識與瞭解，茲舉實施例配合圖示，詳細說明如下： 睛參閱第七圖所示本發明一實施例之放大示意圖其係一種「反 200823561 射型液晶顯示器背光板」，其裳置包括有·· 至 個知明光源，由至少一個％源所組成的照 束整絲學元件_，其光源料發散光 形光子元件101變為扇形薄光束102e、一微小反射光學 兀件陣列2QQ組成的觸反射面2Q1，它將貼近該面入射的扇 光束反射到基本與之垂直的方向上、一光學漫射面3〇〇， 匕是一個微型光學結構的表面，將掠射之入射光轉變成向各個 方向漫射!! 1均勻的液晶屏照明光。上述之光學元件亦可以組 合成成更簡單，更堅固，可靠的單一背景光光學組合體。 說明 本發明反射型液晶顯示器背光板之細節在下文有更詳細 照明光源唪歹，丨 本發明中其照明光源陣列Ε可以方便地使用冷陰極螢光 燈(CCFL)光源或發光二極體(LED)照明陣列。請參閱圖2c 令光源E是由E1，Ε2，···Εη組成的LED線性陣列。線性陣列 中的照明光源陣列E亦可是LED照明的導光光學纖維束(F1， F2..Fn)請參閱圖2。導光光學纖維束（F1，F2..Fn)的一 端相互緊靠成一面和高功率發光二極體Hi接觸。另一端分開 作為發光陣列的發光點（El，E2.,En)。 jL束整形光學元件和照明光源陳列 其中扇形光束發生器1〇2是由至少一個照明光源陣列E 和相應的光束整形光學元件1〇1所組成。 200823561 扇形光束發生器102其實施案例請參閱圖2a使用的光 束整形光學元件是一個彎曲柱彬透鏡1〇13在丫_光軸方向乂上 具有光學聚焦性能；而在於之垂直X-光軸方向上沒有聚焦性 能。從照明光源陣列發出的發散光束Bi經過彎曲柱形透鏡 101a在Y-光軸方向聚焦；而在χ_光軸方向發散形成扇形光束 Bt。扇形光束發散角決定于光源Ε在該方向上的發斂角。如果 光源Ε放置在聚焦面的焦點上，該扇形光束呈平面型。 扇形光束發生器再一實施案例請參閱圖2b使用的光束 整形光學元件是一個彎曲反射鏡1〇1b在一個,γ_光軸方向上具 有光學聚焦性能，而在於之垂直X-光軸方向上沒有聚隹 扇形光束發㈣蚊于照明光源_ ε在該散 角。如果光源E放置在聚焦面的焦點上，該扇形光束呈平面 型。 -使用的光束整形光學元件彻亦可是一個光學元 200823561 整形光學祕定於先束 不同曲率的扇形光束發生器再一每 能光光轴方向上具有不同的聚焦性 成^开^轴方向會聚或發散’·而在X伽方向發ί形 扇形光敍散角決定於元件101e在 "、承光犯力。如果照明光源陣列Ξ放置在γ-光200823561 IX. Description of the invention: [Technical field to which the invention pertains] The present day has a § self-backing green device', especially a backlight device that is suitable for a liquid crystal display. [Prior Art] With the trend of computerization of home appliances, liquid crystal display H (LCD) with thin size, high resolution and low emission is required to meet the requirements of light weight, thin size, low radiation, etc. Due to the decline in manufacturing costs, it has become the mainstream of the display market in recent years. However, the liquid crystal itself does not emit light, so the LCD must use an external light source to provide light energy such as a backlight. The backlight panel is a key component of the liquid crystal display, and its light source is uniform and uniform, so that the liquid crystal panel displays images. _ Currently, the backlights of the conventional light source can be roughly classified into "side light type" and "straight type" designs. The side light type design is to set the light source of the light tube to the side of the liquid crystal panel, and then use the light guide plate to control The direction of travel of the beam causes the beam to be projected onto the diffuser plate below the panel to provide a uniform beam of the liquid crystal panel as shown in Figure 1. In general, the existing backlight panel illumination has the following disadvantages: 1. When the LED side (LED) is incident on the light guide plate, the light enters through the refraction and enters the light guide plate to make the LED light source (LED) ) Failure to fully play, resulting in the waste of light energy. 2. The existing backlight board illumination mechanism is composed of a multi-layer structure as shown in Fig. 1. The program is troublesome and the production cost is high. 200823561 Based on the shortcomings of the conventional backlight panel, the inventor of the present invention proposed a backlight structure. The backlight panel uses an optical element to generate a fan-shaped beam, and the fan beam reflects the crystal panel on the grazing reflection surface, so that the light is fully converted. Produce a uniform planar light source. SUMMARY OF THE INVENTION ~ One object of the present invention is to provide a backlight structure that utilizes the arrangement of optical components to reduce backlighting and achieve backlighting efficiency. Another object of the present invention is to provide a backlight structure that utilizes the arrangement of reflected light to achieve a highly simplified thin junction. It is yet another object of the present invention to provide a backlight structure that utilizes a combination of different optical components to achieve high mechanical stability. In order to achieve the above object, the backlight device of the present invention comprises at least one illumination light=column' which is composed of at least one light source and phase filament decoration optics, and the light source is converted into a fan-shaped thin beam by shaping optics. The tiny reflected light array is formed by riding the reflective surface, and the face of the person (4) is fan-shaped and reflected to the direction perpendicular to the vertical plane, which is the surface of a young optical structure that will graze. The light is converted into 'even LCD illumination light that is diffused in all directions. [Embodiment] In order to enable the understanding and understanding of the features and functions of the shape-constructing device for the purpose of the present invention, the following embodiments are described in detail with reference to the drawings: An enlarged schematic view of an embodiment is an "anti-200823561 liquid crystal display backlight panel", which includes a light source, a light source material composed of at least one % source, and a light source material. The divergent photo-shaped photon element 101 becomes a fan-shaped thin beam 102e, and a touch-reflecting surface 2Q1 composed of a micro-reflective optical element array 2QQ, which reflects the fan beam incident on the surface to be substantially perpendicular to the direction, and is optically diffused. The surface is 3〇〇, which is the surface of a miniature optical structure that converts the grazing incident light into a diffuse direction in all directions!! 1 Uniform LCD screen illumination. The optical elements described above can also be combined into a simpler, more robust, and reliable single backlight optical assembly. The details of the reflective liquid crystal display backlight of the present invention are described in more detail below. In the present invention, the illumination light source array Ε can conveniently use a cold cathode fluorescent lamp (CCFL) light source or a light emitting diode (LED). ) Lighting array. Please refer to Fig. 2c to make the light source E a linear array of LEDs composed of E1, Ε2, ···Εη. The illumination source array E in the linear array can also be a light-guided optical fiber bundle (F1, F2..Fn) for LED illumination. See Figure 2. One end of the light guiding optical fiber bundles (F1, F2..Fn) is in close contact with each other to be in contact with the high power light emitting diode Hi. The other end is separated as a light-emitting point (El, E2., En) of the light-emitting array. jL beam shaping optical element and illumination source display wherein the fan beam generator 1〇2 is composed of at least one illumination source array E and a corresponding beam shaping optical element 1〇1. 200823561 Sector beam generator 102, its implementation example, please refer to Figure 2a. The beam shaping optics used is a curved column lens 1〇13 with optical focusing performance in the 丫_optical axis direction ;; and in the vertical X-ray axis direction There is no focus performance. The divergent light beam Bi emitted from the array of illumination light sources is focused in the Y-optical axis direction by the curved cylindrical lens 101a, and diverged in the direction of the optical axis to form a fan-shaped light beam Bt. The divergence angle of the fan beam is determined by the convergence angle of the source Ε in this direction. If the light source Ε is placed at the focus of the focal plane, the fan beam is planar. Fan beam generator is another embodiment. Please refer to Figure 2b. The beam shaping optics is a curved mirror 1〇1b with optical focusing performance in the γ-axis direction and in the vertical X-ray direction. There is no poly fan-shaped beam hair (four) mosquitoes in the illumination source _ ε at the divergence. If the light source E is placed at the focus of the focal plane, the fan beam is planar. - The beam shaping optics used can also be an optical element 200823561. The shaping optics are fixed to the fan beam generators with different curvatures in the first beam and then have different focusing properties in the direction of the optical axis. Divergence '· and in the X gamma direction, the fan-shaped light divergence angle is determined by the element 101e in ", light and light. If the array of illumination sources is placed in gamma-light
舰^的Γ點ί，縣形光束呈平面型。改變光源陣列E 光4件光束會細縣反射面。其上狀絲整形 先子π件為相應功能的菲涅耳片或全相光學元件。 元光束發生器又—實施案例其光束整形光學元件是一 =寺么的透鏡_ 31。它由正對LED的-組人射面32組成。 =LED正對的反面33可以是平面。在LED陣列方向上，led ^光繼續發散。發散角取決於折射面在广光軸方向上的曲 射面32在與LED陣列垂直V光軸方向具有聚光性能。 §光源^射光垂直射向光束整形光學元件折射面時，為該面反 射的光最小’也就是入射效率最高。為此，在LED方向上， 即，中X-光軸方向上，入射面32可為以LED為中心的半圓 =光;軸方向上入射面彎曲32a請參閱圖3c。LED發射的發 散光:在該方向上的傳播方向沒有改變。在丫_光軸方向上入 射面彎曲32b。在該方向上led發射的光匯被折射為會聚光 如圖3c中b至b、的剖面圖，請參閱圖3e。當光點置於雙曲 面的雨焦點時’折射後發散光轉為平行光。入射面32可以是 200823561 對於平行微小反射柱形面組成的掠光反射面2〇1，扇形光 束可以從相對的兩面入射，形成更明亮，更均勻的照明光。圖 5b顯示的是雙光源扇形光發生器i〇2a和i〇2fc)從兩個相反的 方向照射的平行圓柱面掠射反射面2〇ib的情況。 為了#到更明亮，更均勻的照明，可以從兩個以上的方向 上射向掠光反射面201。以下，從四個方向照射為例介紹本發 明的照明光學。依此為例，可以推廣到其他多方向照明的情況。 請參閱圖6是四個扇形光發生器102a，,102b，1〇2c和 102d從四個方向射向四傾面錐型微小光學反射元件2〇2組成 的掠射反射面201。入射的扇形光束被微小光學反射錐體的四 個傾面202分別反射到基本與掠射反射面2〇1。同樣由於前後 錐面的遮播作用，一般來泰，不同的微小錐面反射而來的光沒 有重合部分。射向液晶屏的光照明在空間是不連續的。為此， 加入附加的由微小光擴束元件301，如凹球面透鏡，組成的擴 散板302。將前後光錐來的光束在漫射面300有交集，從而在 該面内形成明亮的連續照明面。上述之微小反射光學元件可為 具有相應光學性能的菲涅耳平面鏡。將微小錐體的反射面可改 為曲面，它不但將入射光Bt反射而且進一步擴束。 請參閱圖7中使用的是由微小球面光學反射元件402 組成的掠光反射面201。四個扇形光發生器陣列1〇2a，1〇2b， 102c和l〇2d從四個方向射向掠射反射面201。掠射反射板 201是由鐘有反光膜層的微小球面203a組成。入射的扇形光 束被掠射反射面201反射到與之基本垂直的方向上在漫射板 3〇〇上形成均勻的，明亮的連續照明。上述之掠射反射面，可 由一系列排成直列式或蜂窩式排列的三維微小光學反射元件 陣列組成，其曲面形狀度取決於掠射反射光Bc的擴散立體角 11 200823561 ft轴相對於入射的扇形光束的角度或由一系列排成 式或夺窩式排列的半球面光學反射元件402組成。 光在形光束Bi經峙射反射面2。1反射到液惠屏的 句的，日日:不連續的所以為此，加入光學漫射面300形成均 風、、S私品冗的連續照明。光學漫射面為凹球面透鏡所組成的光 為凹球面透鏡、柱面透鏡、全息光學漫射面、朗伯 特先予茂射面或高斯光學漫射面。 屏昭源，列’掠射反光面和漫射面組和’即形成液晶 可^艾源陣列中的整形光學，掠射反光面和漫射面 離70件，也可以是整體成形的一體化元件。 豐景光光 墙射7巾’ _光料壯，㈣反射板201和 。板审，都疋分離元件。它們的光學功能可以組合成成更 i二=，可靠的單-元件。請參閱圖8就是-以第8,圖表示的顯示器背光板有四個扇形 02b，聰和102d。扇形光束發 8n^射㈣魏集朗—倾謂的背景 ，是—義光學平板。它的四周51_ ^先先子陣列，底面2。1是掠射反射面；上面3。。是 度專板。圖8a是其一個截面，用以描 。對 聰件510。它的二= 3f所不。㈣光源_發出的發散光b = 1似作用後，成為扇形光束射向掠射反射ί 12 200823561 射面201反射並擴束後，投向光學漫射板3〇〇 射板300後，就形成液晶屏的照明光。 逐過該光學漫 請參閱圖7或圖8中的照明光源陣列可 聚光，而底面的微型反射體可以是球面或非球面。不同的 αΪΓί示了不_能產生扇形薄光束的扇形光束發生哭The ship's Γ point ί, the county-shaped beam is flat. Change the light source array E light 4 pieces of light will be fine county reflection surface. The upper wire is shaped into a Fresnel piece or a full-phase optical element of a corresponding function. The element beam generator is again - the case where the beam shaping optics is a lens of the temple. It consists of a group of human faces 32 facing the LED. = The opposite side 33 of the LED can be a flat surface. In the direction of the LED array, the led ^ light continues to diverge. The divergence angle depends on the curved surface 32 of the refractive surface in the direction of the broad optical axis having a condensing property in the direction perpendicular to the V-axis of the LED array. § When the light source is directed perpendicularly to the refracting surface of the beam shaping optics, the minimum reflected light for that surface is the highest incidence efficiency. For this reason, in the direction of the LED, that is, in the direction of the middle X-optical axis, the incident surface 32 may be a semicircle = light centered on the LED = light; and the incident surface is curved 32a in the axial direction, see Fig. 3c. The divergent light emitted by the LED: the direction of propagation in this direction does not change. The entrance face is curved 32b in the direction of the 丫_optical axis. The light beam emitted by the LED in this direction is refracted into a concentrated light as shown in Fig. 3c in Fig. 3c. When the spot is placed in the rain focus of the hyperbolic surface, the divergent light is converted into parallel light after the refraction. The incident surface 32 may be 200823561. For the grazing reflective surface 2〇1 composed of parallel micro-reflective cylindrical surfaces, the fan-shaped light beam may be incident from opposite sides to form a brighter, more uniform illumination light. Fig. 5b shows the case where the dual-source fan-shaped light generators i〇2a and i〇2fc) illuminate the parallel cylindrical grazing reflection surface 2〇ib from two opposite directions. In order to achieve a brighter, more uniform illumination, it is possible to strike the pre-glare reflecting surface 201 from more than two directions. Hereinafter, illumination optics of the present invention will be described by taking illumination from four directions as an example. Taking this as an example, it can be extended to other multi-directional lighting situations. Referring to Fig. 6, four sector light generators 102a, 102b, 1〇2c and 102d are directed from four directions to a grazing reflection surface 201 composed of a four-inclined pyramid type micro-optical reflection element 2〇2. The incident fan beam is reflected by the four tilting faces 202 of the microscopic optical reflecting cone to the substantially glancing reflecting surface 2〇1, respectively. Also due to the shielding effect of the front and rear cones, it is common to come to Thailand, and the light reflected from different tiny cones does not have overlapping parts. The illumination of the light directed at the LCD screen is discontinuous in space. To this end, an additional diffusion plate 302 consisting of a small optical beam expanding element 301, such as a concave spherical lens, is added. The beams from the front and rear light cones intersect at the diffusing surface 300 to form a bright continuous illumination surface in the plane. The above-mentioned minute reflective optical element can be a Fresnel plane mirror having corresponding optical properties. The reflecting surface of the tiny cone can be changed to a curved surface, which not only reflects the incident light Bt but also further expands the beam. Referring to FIG. 7, a pre-glare reflecting surface 201 composed of a micro spherical optical reflecting element 402 is used. The four fan-shaped light generator arrays 1 2a, 1 〇 2b, 102c and 10 〇 2d are directed from the four directions toward the grazing reflection surface 201. The grazing reflection plate 201 is composed of a microspherical surface 203a having a reflective film layer. The incident fan beam is reflected by the grazing reflector 201 into a direction substantially perpendicular thereto to form a uniform, bright continuous illumination on the diffuser plate 3''. The grazing reflection surface described above may be composed of a series of three-dimensional micro-optical reflective element arrays arranged in an in-line or honeycomb arrangement, the degree of curvature of the surface being dependent on the diffuse solid angle of the grazing reflected light Bc 11 200823561 ft axis relative to the incident The angle of the fan beam is comprised of a series of hemispherical optical reflective elements 402 arranged in a nested or nested arrangement. The light in the shape beam Bi is reflected by the radiant reflection surface 2.1. The sentence is reflected to the liquid screen. The day: non-continuous, so to this end, the optical diffusing surface 300 is added to form a uniform wind, and the S-series continuous illumination . The optical diffusing surface is a concave spherical lens composed of a concave spherical lens, a cylindrical lens, a holographic optical diffusing surface, a Lambert first or a Gaussian optical diffusing surface. Pingzhao source, column 'grazing reflective surface and diffusing surface group and 'that forms the shaping optics in the liquid crystal can be used in the array of AI source, grazing reflective surface and diffusing surface away from 70 pieces, can also be integrated forming element. Fengjing Guangguang Wall shot 7 towels' _ light material strong, (four) reflectors 201 and . In the board review, the components are separated. Their optical functions can be combined into more reliable, single-element. Referring to Figure 8, the display backlight shown in Figure 8 has four sectors 02b, Cong and 102d. Fan-shaped beam hair 8n ^ shot (four) Wei Ji Lang - the background of the dumping, is - Yi optical plate. It is surrounded by 51_ ^ first sub-array, bottom 2.1 is a grazing reflection surface; above 3. . It is a special board. Figure 8a is a cross section thereof for drawing. For Cong 510. Its two = 3f does not. (4) The light source _ emitted divergent light b = 1 acts as a fan beam to the grazing reflection ί 12 200823561 After the surface 201 is reflected and expanded, it is directed to the optical diffuser plate 3 to form a liquid crystal. The illumination of the screen. Passing through the optical diffuser, the array of illumination sources in Fig. 7 or Fig. 8 can concentrate light, while the microreflectors on the bottom surface can be spherical or aspherical. Different αΪΓί shows that the fan beam that does not produce a fan-shaped thin beam is crying
的組合。但無法將所有熟悉該項技術者 介紹。但所有這些變化沒有逾越我們專 【圖式簡單說明】 圖1現存多層背光照明機構 圖2a透射型柱型光學元件 圖2b反射型柱型光學元件 圖2c柱形發光陣列 圖3a彎曲透射型光學元件 圖3b彎曲反射型光學元件 圖3c扇形光發光陣列 圖3d聚光面平行截面 圖3e聚光面垂直截面 圖3f傾斜聚光面垂直截面 圖4a微小平行平面光學反射槽 圖4b帶擴散柱面的微小平行平面光學反 圖5a微小平行圓柱面光學反射槽 3 圖5b雙向照明系統 9 圖6a傾面錐體微小光學反射元件 圖7分離元件背光照明機構 圖8集成元件背光照明機構 13 200823561 【主要元件符號說明】 L1 底反射板^ L3 冷陰極燈管 L4 導光板 L5 擴散片 L6 集光片 E 照明光源陣列 E1 高功率發光二極體The combination. However, it is not possible to introduce all those who are familiar with the technology. But all these changes have not exceeded our special [schematic description] Figure 1 existing multi-layer backlight mechanism Figure 2a Transmissive column optics Figure 2b Reflective column optics Figure 2c Cylindrical array Figure 3a Curved transmission optics Fig. 3b Curved reflection type optical element Fig. 3c Sector light emitting array Fig. 3d Converging plane parallel section Fig. 3e Converging plane vertical section Fig. 3f Inclined concentrating plane Vertical section Fig. 4a Micro parallel plane optical reflection groove Fig. 4b with diffusion cylinder Small parallel plane optical inverse 5a micro-parallel cylindrical optical reflection groove 3 Figure 5b two-way illumination system 9 Figure 6a Inclined cone micro optical reflection element Figure 7 Separation element backlight illumination mechanism Figure 8 Integrated component backlight illumination mechanism 13 200823561 [Main components Explanation of Symbols] L1 Bottom Reflector ^ L3 Cold Cathode Lamp L4 Light Guide L5 Diffuser L6 Light Collector E Illumination Source Array E1 High Power Light Emitting Diode
Eel—Een發光陣列的發光點 Fl—Fn 導光光學纖維束 101 光束整形光學元件 101a 彎曲柱形透鏡 101b 彎曲反射鏡 = 101c 柱面光學元件 101d 透射型柱型光學元件 101e 不同聚焦性能的反射光學元件 102 扇形光束發生器 102a 扇形光發生器其一 102 b 扇形光發生器其二 102c 扇形光發生器其三 102d 扇形光發生器其四 102e 扇形光束成形面 200 反射光學元件陣列 201 掠射反射面 201a 單平面掠射反射面 201b 圓柱面掠射反射面 202 — 四傾面錐型微小光學反射元件 203 微小球面 14 200823561 203a 微小球面光學反射元件 300 301 302 400 Bi '‘ Bt Br Be | 11a 11b 光學漫射板° 微小光擴束元件 擴束板 光束投影 從照明光源陣列發出的發散光束 扇形光束 反射型扇形光束 掠射反射光 柱面鏡的光束入射面 柱面鏡的光束聚光面 31 32 透鏡陣列 入射面· ‘ 32a 32b 33 X-方向的曲面 Y-方向的曲面 聚光面正對的反面 • 500 501 ， 502 510a-d _ 600 800 y X 反射鍥形槽 反射鍥形槽之平行的柱面鏡 反射鍥形槽之平行的柱面鏡陣列 聚光光學陣列 光束擴散光 背景光光學組合體 / Y-光轴方向 X-光轴方向 15Light-emitting point of the Eel-Een light-emitting array F1-Fn Light-guiding optical fiber bundle 101 Beam-shaping optical element 101a Curved cylindrical lens 101b Curved mirror = 101c Cylindrical optical element 101d Transmissive cylindrical optical element 101e Reflective optical with different focusing performance Element 102 Sector Beam Generator 102a Sector Light Generator 102 102 Sector Light Generator 2 102c Sector Light Generator 3 102d Sector Light Generator 4 102e Sector Beam Forming Surface 200 Reflective Optical Element Array 201 Grazing Reflection Surface 201a Single plane grazing reflection surface 201b Cylindrical surface grazing reflection surface 202 - Four inclined cone type micro optical reflection element 203 Micro spherical surface 14 200823561 203a Micro spherical optical reflection element 300 301 302 400 Bi '' Bt Br Be | 11a 11b Optical Diffuser plate ° Tiny beam expander element Beam expander beam projection Diffuse beam from the array of illumination sources Fan beam Reflective fan beam Glittering Reflecting light Cylindrical beam Beam incident surface Cylindrical beam Converging surface 31 32 Lens array Incident surface · ' 32a 32b 33 X-direction surface Y-direction curved surface is directly opposite Surface • 500 501 , 502 510a-d _ 600 800 y X Reflective 槽-shaped groove reflection 锲-shaped parallel cylindrical mirror 锲 之 之 parallel cylindrical mirror array concentrating optical array beam diffused light background optical combination Body / Y-optical axis direction X-optical axis direction 15