200846591 九、發明說明： 【發明所屬之技術領域】 -種平面総發生H ’功效爲可將職光_散成面狀照明光之發生 【先前技術】200846591 IX. Description of the invention: [Technical field to which the invention pertains] - The occurrence of a planar 総 H ′ effect is the occurrence of the illuminating light that can be scattered into a surface light [Prior Art]
新近由於貢訊産業發達，例如液晶面板等電子監看器材，必須實施有 背光以比·畫素影像，該背光安财在監視面板賴邊實施，或在底面 • 錢背光投影’相關該背光光源實施有冷陰極管及LED照明等方式，由LED 二極體發光器者，則必須轉列或矩陣方式分佈錄的二極體發光單體， 才能滿足均句的跨距照度，又且在每一顆⑽單體實施有杯形反光面，使 ^之光束無法均勻，得藉由具散射功能之穿鱗板擴散，傳統實施除了 耗能之外，更需密集陣列多數LED而造成成本負擔。Recently, due to the development of the Gongxun industry, electronic monitoring equipment such as liquid crystal panels must be implemented with a backlight to compare the image. The backlight is implemented on the monitor panel, or on the underside. For the implementation of cold cathode tubes and LED illumination, LED dipole illuminators must be distributed or matrix-distributed diode illuminators to meet the span illuminance of the sentence, and One (10) monomer has a cup-shaped reflective surface, so that the beam of the ^ can not be uniform, and it can be diffused by the scaly with scattering function. In addition to energy consumption, the conventional implementation requires a dense array of most LEDs to cause a cost burden.
I 【發明内容】 y寻疋本19版供—種可將點狀光源擴散成面狀照明光之發生器，它利 將一薄化導光板爲構成本體，在導光板幅面巾央設有錐形光束擴散器，它 ·#㈣狀辆糊狀射光束料及雜或反饋於導光板裏部，再由導光 沾予出射面㉟射出輝度均勻的照明光茫，於是均勻擴大照明面爲其主要 ㈢的〇 發^二目的爲每-個具規卿狀之發生器，相鄰之間可形成陣列 賴陣組合，，騎綺施面積。 本發明第：θ ΛΑ γ 使用量。—的爲在相同的照明面積裏，相對可大幅減低光源單體的 2四目的爲利於生産，結構簡單提高産制良率。 本==五目的爲可快速組合成需求面積之光照面。 χ月第、目的爲該發生II可利於自動化生産，生産玉序簡易。 200846591 本發明第七目的爲該發生器以陣列或矩陣組合成大型背光實施，方便 其中早元選擇性維修或換裝D 、 本發明第八目的爲發生器的側邊爲具有指向反射角度的光學斜面，補 償出射面的流明度。 【實施方式】 有關本發明之具體實義容，首先請參則1 ®所示，本發明所形成 發生器10，主要系由-具規則狀之薄形導光板！，表面爲光學出射面n， 周邊形成光學側面12，底面13原則上與光學出射面n平行，在導光板i 馨的中央設有一轴心8與出射面11垂直之光束擴散錐體3，該錐體3具有錐 形反射面300，底邊30接近或平齊於光學出射面u，頂錐部份同軸心§應 對-點狀統2，該雜絲2發生-光束B，光束B進人狀射面3〇〇 了 則被該錐面擴散成多數平面光傳導於導光板j的裏部，並受導光板工規範 限制形成散射或反饋，再由光學出射面η發射出均勻亮度之照明光茫Bn。 該光源2爲獨立體，可獨立於外側，或喪接組合在導光板1相對位置。 光束擴散錐體3其錐面31對稱軸S大約爲45。z，光源2所發生之光 束B則以對應角度反射出不等角的射向，點狀光源2穿過底面巧的實施爲 T直接進入或設有-透明穿孔，讓光束3可接近較高透光率而進入。 導光板1的外觀爲-三維薄狀塊體如圓片狀或方塊狀，光學側面12可 爲反射面或透射面，反射光糊域反射或透射侧而向祕傳達，底面 13可爲一向上反射之光學反射作用面。 擴散錐體3可與導光板i同體形成，該同體形成的方式爲在製作導光 板時直接形成錐體3，或以事後加工方式在完成導光板i之後，以進行銳切 操作車獅體3 ’或該錐體3爲一獨立元件所構成，如以金屬或其他材質製 作完成後，m里人射出方錢嵌置方式輯合在導光板丨巾央，錐體3若 爲獨立兀件所形成’則在其圓錐表面鍍上有_反射層形成全反射，錐體3 與導光板1冑-體性能者，則相同可設有反射鑛層或反射膜等實施，主要 200846591 爲在其錐面31可形成對點狀光源2反射之功效。 上述出射面11出射光茫Bn的強度均勻操作爲決定在光束B及反射面 300的對應角度。 該光源2主要爲以二極體發光器所構成，或由光纖傳導所形成的點狀 光。 請再參閱第2圖所示，發生器1〇同樣由導光板！爲構成主體，中央所 設光束擴散錐體3所設之反射面300爲曲形錐面32,該曲形錐面32的曲率 可應對光源2之光束B而作不等角位的反射，可調變出需求的反射角产， 曲形錐面32包含了旋轉拋物線曲率，利用該拋物線爲無限遠端聚焦，讓反 射之光束可平行。 請再參閱第3圖所示，發生器10由導光板丨爲構成主體，在錐體3的 頂尖部位可設有一補償光學面30A，該補償光學面30A爲平面或具曲率之光 學面，以讓光源2之光束B部份穿過，而經錐體3的底邊3〇折射出，前提 爲该錐體3爲空心狀或實心具折射透光功能。 該補償光學面30A若爲曲率，則可應對光束B的射角爲之調變，該光 束B包含筆直光束。 ~ 上述補償光學面30A的實施，皆可實施在第1圖或第2圖之任何形狀 錐體3。 請再參閱第4圖所示，無論錐體3的形狀如何，以及其頂尖是否有補 償光學面30A ’在導光板1的底面13可實施反射面4〇，以將光源2的光束 作反射，反射面4G進-何實猶反射元件4，該反射元件4爲以密集網 點構成反射，以形成具體的閃射陣列，利用該閃射陣列密集分佈而可均勻 反射出出射光茫Bn，反射元件4更進-步可實絲集狀微小凸物組成的 反射陣列’其巾凸出物爲槽形或錐碱球形等錄立體元件單元所構成， 其排列方式相對軸心S爲同心作同心圓排列或矩陣構成反射陣列。 反射兀件4則可對光束B1作有效反射，從光學出射面n放射光茫βη， 部份反射光束B2則如前述在導光板丨裏部作指向性反射。 200846591 曰睛再參閱第5圖所示，發生器1Q以導光板〗爲構成主體，導光板爲中 央厚度大關邊厚度，得是在表面形絲邊⑽，巾央·設錢散錐體3， 將光源2的絲B作反射，底面解面錄^ s垂直，底面13同樣可爲反 射面，並實施有反射元件4，側面爲具反射或投射的光學側面12，光源2 所發生之光束B經反射之後形成部份反射光束β1，可作用於反射面4〇或反 射元件4 ’部伤光束B2則經由錐體3的反射面3⑽相對角度部份指向斜邊 100，再藉由斜邊100的法線n規範，使形成一波形反射路徑 ，該波形反射 路控的波長會依麟邊100雜心s的相對麟增加喊小，如[卜L2之 等比差。 請再參閱第6圖所示’圖式之導光板〗針心較厚周邊較薄的實 施:差異在光學出射面Η爲平整面，底面13具有斜邊⑽，斜邊可實 施爲反射面40，或在該斜邊表面分佈有反射元件4，中央對稱轴心s實施 有擴散錐體3，得是光源2所發生之光束B部份光束β1系射向斜邊議， 或反射元件4部份光束_作㈣㈣面u，再藉由出射面u的反射作 用交互反射於斜邊1GG與出射㈣之間，其所形成之波形反娜徑波長接 近導光板1周雜置急賴短’如L3、L4之波長大幅差錢化，上述波形 反射最後也可能反向回饋。 請再參閱第7騎示，發生H 1Q進—步可實财兩光學薄板u，ib， 構成之導光板，巾央姉軸心位置設有擴散雜3，絲2所發生光束B 則經由擴散雑3的反咖_作細性祕舰，雜光束m可作用在 光學薄板1B的表面，該絲薄板1B的表面可狀射面4()或魏有反射元 件4，以將部份光束B1作析許角度之反射，使在上方光學薄板u的出射面 11閃射出均勻光茫Bn ’光學薄板1Α、1β之間爲空心，側面可實施具有透 射或反射之光賴面12 ’進-步可在心部位填人光學介人材⑻，光束 擴散錐體3的頂尖同樣可實施有補償光學面寫，以將光束b在錐 邊30穿過’上述空心狀物t，_在發生㈣需求較高厚度的條件下·， 避免實心紐介質對光路徑的辟，必要時，再填充光學介人材⑻，或可 200846591 利用介入⑽光學雜不等，如可完全傳播絲，或形成漫色傳撥等需求 之結果。 ^述各種貝％在光束擴散錐體3的頂尖，皆可實施有具曲率的補償光 子面30A ’以知光束b可部分穿過，並麵在錐體3的底邊洲，讓出射面 11正體巾田面可得均勻的照明光茫βη，補償光學面継在擴散錐體3爲金屬 或不透光的材質製成時則無需採用。 該側面12絲學透射歧射面，反射面可將反射之絲可調整於側面 12所規範的範圍裏部，讓光能量可指向於出射面η。 請再參閱第8圖所示，前述各項實施在導光板j的底面13，實施有反 射元件4或反射面40，皆可對光束Β作祈許角度的反射，錐體3的斜率相 對軸心S爲大概轉在，因絲Β的射人肖位元變化，部分反射光束 會作用在反射® 40,而反射面4〇所實施的各種反射元件4則可形成密集反 射向出射面11轉射出，其中該反射元件4更可爲線槽狀，以多數不等直徑 之突起條紋構成，如菲涅耳鏡條紋的實施，或該反射元件可形成全息光學 元件反射元件等，主要系可將錐體3所反射之光束再反射指向出射面u， 各反射元件4可采全面積的鋪設在反射面4〇。 請再參閱第9圖所示，本發明在形成發生器1〇的導光板j的立向侧邊 設有反射光學斜面120，該角度爲單斜邊或棱形角皆可，主要是能將反射光 束B1遵循反射原理，作指向性反射，以補償或均勻出射面^出射的流明， 其中該斜面120可與導光板1 一體成形或事後加工或附加方式達成，且其 反射角位的變化，得依據反射光束B1與出射面n折射角容許值和導光^ 子特性而應對，又其對應角度依據全反射原理’以及裁決反射臨界角度， 因此依據該原則角度，因此使光束B1入射角接近或越過臨界角時，則可執 行全反射作用。 請再參閱第10圖所示，所形成之發生器10其形體爲具規則狀，則可 形成陣列方式排列或矩陣方式排列，以造就大型光照面，▲每一發生器1〇 所屬的光源2則安排在底部，經由錐體3擴散，進行如上述各種反射而在 200846591 出射面11形成照明光茫Bn，使該光茫Bn的輝度均勻。 利用了陣列或矩陣的方式所排列，可擴大其光照面積，其間在相鄰的 間隙線上可介入有具粘著性之光學介入材101，該介入材1〇1爲具透光性， 因此在導光板1的侧面12 ’無論是具反射或透射光學面者，皆可經由介入 材101實施傳導或連結。 由圖式表示出在一定需求光照面積A的情況下，利用了導光板〗彌補 及光擴散功能，而減少光源2的使用數量，該光源2爲以led二極體發光 器所構成，其數量減少，相對減低故障率，以及較少功率相對避免過量積 熱，單體形成易於製作及易於組合成大幅光照幅面，且生産時可與導光板 • _生產擴散錐體，完舰鮮雜辆即可達成有效均勻亮度擴散之照 射光茫，不論在組合實施或亮度均勻，均具有革新性的應用方式，和由於 製作簡便，可方便快速大量生産並利於自動化生產的配合，絲2爲可單 體，立在外，或嵌入就位形成，因此換修容易，使用本發明爲背光者，生 産单位可簡化成本，使㈣可大幅_能源，實雜賴_時機下優良 的創作。 上述實施例之說明爲本發明較佳實施例，凡舉類等導光板實施和擴散 錐體作用，將點狀光源擴算成面狀光茫的等效前提下，皆爲本發明權利 及範圍。 【圖式簡單說明】 第1圖系爲本發明之實施結構示意圖。 第2圖系爲本發明實施錐體形狀變化示意圖 第3圖系爲本發明錐體頂尖實施五彩光學面示意圖。 第4圖系爲本發明導光板底部實施反射作用示意圖。 弟5圖糸爲本發明導光板具斜邊之示意圖。 第6圖系爲第5圖另一實施例。 第7圖糸爲本發明導光板另一實施例。 200846591 第8圖系爲本發明導光板底部實施反射元件示意圖。 第9圖系爲本發明導光板侧面爲光學斜面示意圖。 第10圖系爲本發明可陣列組合之示意圖。 【主要元件符號說明】 1 :導光板 ΙΑ、1B :光學薄板 10 :發生器 100 :斜邊 101 :光學介入材 11 :出射面 12 :側面 120 :反射光學斜面 13 :底面 130 :透明穿孔 2 :光源 3:光束擴散錐體 30 :底邊 30A :補償光學面 31 :直線錐面 32 :曲形錐面 3⑽、40 :反射面 4:反射元件 S :軸心 Bn :光茫 B、B卜B2 :光束 π ·法線 A :面積 11I [Summary] y search for this 19th edition for a kind of generator that can diffuse a point light source into a planar illumination light, which facilitates a thinned light guide plate to form a body, and a cone is arranged on the front surface of the light guide plate Shape beam diffuser, it #(四)-like paste-like beam material and miscellaneous or feedback in the inner part of the light guide plate, and then the light guide surface 35 emits a uniform illumination illumination pupil, so that the illumination surface is uniformly enlarged (3) The purpose of the second generation is to generate a generator of each type of regulation, and an array of arrays can be formed between adjacent ones. In the present invention, the amount of θ ΛΑ γ used. - In the same lighting area, the purpose of relatively reducing the light source monomer is to facilitate production, and the structure is simple to improve the production yield. This == five purposes is the light surface that can be quickly combined into the required area. Haoyue, the purpose of this occurrence II can be conducive to automated production, the production of jade order is simple. 200846591 The seventh object of the present invention is to realize that the generators are combined into a large backlight in an array or matrix, which facilitates selective maintenance or replacement of D in the early element, and the eighth object of the present invention is that the side of the generator is optical with a pointing reflection angle. The slope compensates for the lumen of the exit surface. [Embodiment] With regard to the specific meaning of the present invention, first, as shown in the reference 1 ® , the generator 10 formed by the present invention is mainly composed of a regular light guide plate! The surface is an optical exit surface n, and the periphery forms an optical side surface 12. The bottom surface 13 is in principle parallel with the optical exit surface n. A beam diffusing cone 3 perpendicular to the exit surface 11 is disposed in the center of the light guide plate i. The cone 3 has a conical reflecting surface 300, the bottom edge 30 is close to or flush with the optical exit surface u, the conical portion is concentrically §-point-like, 2, the shred 2 occurs - the beam B, the beam B enters When the surface 3 is smashed, the cone surface is diffused into a plurality of planar light to be conducted in the inner portion of the light guide plate j, and is limited by the light guide plate to form scattering or feedback, and then the optical exit surface η emits uniform brightness illumination. Light Bn. The light source 2 is an independent body, and can be combined with the outer side or combined with the light guide plate 1 in a relative position. The beam diffusing cone 3 has a tapered axis 31 whose axis of symmetry S is approximately 45. z, the light beam B generated by the light source 2 reflects the angle of the unequal angle at a corresponding angle, and the point light source 2 passes through the bottom surface and is implemented as a direct entry of T or a transparent perforation, so that the light beam 3 can be approached higher. Light transmittance enters. The appearance of the light guide plate 1 is a three-dimensional thin block such as a disk shape or a square shape, and the optical side surface 12 can be a reflective surface or a transmissive surface, and the reflected light is reflected or transmitted to the side, and the bottom surface 13 can be a An optical reflective surface that reflects upwards. The diffusion cone 3 can be formed in the same manner as the light guide plate i. The homogenous body is formed by directly forming the cone 3 when the light guide plate is fabricated, or after the completion of the light guide plate i in a post-processing manner, to perform the sharp-cut operation of the vehicle lion. The body 3' or the cone 3 is composed of a separate component. If it is made of metal or other materials, the m-injection method is assembled in the center of the light guide plate, and the cone 3 is independent. The part formed 'is coated with a reflective layer to form total reflection, and the cone 3 and the light guide plate 1 have the same performance as the light guide plate. Its tapered surface 31 can form a reflection effect on the point light source 2. The intensity of the exit pupil 11n of the exit surface 11 is uniformly operated to determine the corresponding angle between the beam B and the reflecting surface 300. The light source 2 is mainly composed of a diode illuminator or a spot light formed by conduction of an optical fiber. Please refer to Figure 2 again, the generator 1〇 is also guided by the light guide! In order to form the main body, the reflecting surface 300 provided by the central beam diffusing cone 3 is a curved tapered surface 32, and the curvature of the curved tapered surface 32 can be reflected by the beam B of the light source 2 in an unequal position. The desired angle of reflection is modulated, and the curved cone 32 contains a parabolic curvature of rotation, which is used to focus on the infinity end so that the reflected beams can be parallel. Referring to FIG. 3 again, the generator 10 is composed of a light guide plate , as a main body, and a compensation optical surface 30A can be disposed at a tip end portion of the cone 3, and the compensation optical surface 30A is a plane or an optical surface having a curvature. The beam B of the light source 2 is partially passed through and refracted through the bottom edge 3 of the cone 3, provided that the cone 3 is hollow or solid with a refracting light transmission function. The compensation optical surface 30A, if it has a curvature, can be modulated by the angle of incidence of the light beam B, which includes a straight beam. ~ The above-described compensating optical surface 30A can be implemented in any shape of the cone 3 of Fig. 1 or Fig. 2. Referring to FIG. 4 again, regardless of the shape of the cone 3, and whether or not the tip thereof has a compensating optical surface 30A', a reflecting surface 4〇 can be implemented on the bottom surface 13 of the light guiding plate 1 to reflect the light beam of the light source 2, The reflecting surface 4G is in the reflective element 4, and the reflective element 4 is configured to reflect by dense dots to form a specific flash array. The flash array is densely distributed to uniformly reflect the exit pupil Bn, and the reflective element 4 is further a reflective array consisting of a set of micro-convex shaped protrusions, wherein the towel protrusions are formed by a trough-shaped or cone-shaped spherical or the like, and arranged in a concentric arrangement with respect to the axis S or concentrically The matrix forms a reflective array. The reflecting element 4 can effectively reflect the light beam B1, and emit the light 茫βη from the optical exit surface n, and the partially reflected light beam B2 is directionally reflected in the inner portion of the light guide plate as described above. 200846591 In addition, as shown in Figure 5, the generator 1Q is composed of a light guide plate, and the light guide plate has a thickness of a central thickness. The wire B of the light source 2 is reflected, the bottom surface is recorded perpendicularly, and the bottom surface 13 is also a reflective surface, and the reflective element 4 is implemented, and the side surface is an optical side 12 with reflection or projection, and the light beam generated by the light source 2 B is reflected to form a partially reflected beam β1, which can be applied to the reflecting surface 4〇 or the reflecting element 4'. The incident beam B2 is directed to the oblique side 100 via the opposite angle portion of the reflecting surface 3 (10) of the cone 3, and then by the oblique side The normal n specification of 100 is such that a waveform reflection path is formed, and the wavelength of the waveform reflection path control will be small according to the relative lining of the side of the 100 side of the nucleus s, such as [B L2 equal ratio difference. Please refer to the light guide plate of the figure shown in Fig. 6 for the thinner periphery of the needle. The difference is that the optical exit surface is a flat surface, the bottom surface 13 has a beveled edge (10), and the oblique side can be implemented as a reflective surface 40. Or a reflective element 4 is disposed on the surface of the oblique side, and the central axis of symmetry s is provided with a diffusion cone 3, such that the light beam B of the light source 2 is incident on the oblique side, or the reflective element is 4 The beam _ is the (4) (four) plane u, and is mutually reflected by the reflection of the exit surface u between the oblique side 1GG and the exit (four), and the wavelength of the inverse phase of the waveform formed is close to the light guide plate. The wavelengths of L3 and L4 are greatly degraded, and the above-mentioned waveform reflection may also be reversely fed back. Please refer to the 7th riding display again, the H 1Q advance-step can be used to make two optical sheets u, ib, the light guide plate is formed, the center of the shaft is provided with a diffusion impurity 3, and the light beam B generated by the filament 2 is diffused.反3 anti-coffee _ as a fine secret ship, the miscellaneous beam m can act on the surface of the optical sheet 1B, the surface of the silk sheet 1B can be shaped like a surface 4 () or Wei has a reflective element 4 to partially beam B1 Reflecting the angle of the reflection, the exit surface 11 of the upper optical sheet u is flashed out of the uniform aperture Bn 'the optical sheet 1 Α, 1β is hollow, and the side surface can be made with a light transmissive or reflective surface 12 'step-step The optical interface (8) can be filled in the heart portion, and the tip of the beam diffusing cone 3 can also be implemented with a compensating optical surface writing to pass the beam b through the hollow body t at the cone edge 30, where the demand is higher (4). Under the condition of thickness, avoid the development of the solid medium to the light path, if necessary, refill the optical media (8), or use 200846591 to intervene (10) optical miscellaneous, such as can completely spread the wire, or form a diffuse color transfer, etc. The result of the demand. The various tips are at the tip of the beam diffusing cone 3, and the compensated photon face 30A' having curvature can be implemented to know that the beam b can partially pass through and face the bottom edge of the cone 3, so that the exit face 11 The uniform body towel surface can obtain a uniform illumination diaphragm ηβ, and the compensation optical surface 无需 is not required when the diffusion cone 3 is made of metal or opaque material. The side 12 is a wire-transmissive dissipating surface, and the reflecting surface can adjust the reflected wire to the inner portion of the range defined by the side surface 12, so that the light energy can be directed to the exit surface η. Referring to FIG. 8 again, the foregoing embodiments are implemented on the bottom surface 13 of the light guide plate j, and the reflection element 4 or the reflection surface 40 is implemented, and both of the beams can be reflected at an angle of inclination, and the slope of the cone 3 is opposite to the axis. The heart S is approximately turned, and the reflected beam will act on the reflection® 40 due to the change of the silk ray, and the various reflective elements 4 implemented by the reflective surface 4 can form a dense reflection to the exit surface 11 Shooting, wherein the reflective element 4 is more linear, formed by a plurality of protruding strips of unequal diameter, such as the implementation of Fresnel stripe, or the reflective element can form a holographic optical element reflective element, etc. The light beam reflected by the cone 3 is reflected again toward the exit surface u, and each of the reflective elements 4 can be laid over the entire surface of the reflective surface 4〇. Referring to FIG. 9 again, the present invention is provided with a reflective optical bevel 120 on the vertical side of the light guide plate j forming the generator 1 , which is a single oblique or prismatic angle, and can mainly be The reflected beam B1 follows the principle of reflection as a directional reflection to compensate or uniformly emit the lumen of the surface, wherein the slope 120 can be integrally formed with the light guide plate 1 or processed afterwards or in an additional manner, and the angle of reflection is changed. It depends on the allowable value of the angle of refraction of the reflected beam B1 and the exit surface n and the characteristics of the light guide, and the corresponding angle is based on the principle of total reflection and the critical angle of the reflection. Therefore, according to the principle angle, the incident angle of the beam B1 is close. Or when the critical angle is crossed, the total reflection effect can be performed. Please refer to FIG. 10 again, the formed generator 10 has a regular shape, and can be arranged in an array manner or a matrix arrangement to create a large illumination surface, and the light source 2 of each generator 1 Then, it is arranged at the bottom, diffused through the cone 3, and the illumination pupil Bn is formed on the exit surface 11 of 200846591 by the various reflections described above, so that the luminance of the pupil Bn is uniform. By arranging arrays or matrices, the illumination area can be enlarged, and an adhesive optical interposer 101 can be interposed in the adjacent gap line. The intervening material 1〇1 is translucent, so The side surface 12' of the light guide plate 1 can be conductive or connected via the intervening material 101, whether it has a reflective or transmissive optical surface. The figure shows that in the case of a certain required illumination area A, the light guide plate is used to compensate and the light diffusion function is used, and the number of the light source 2 is reduced. The light source 2 is composed of a LED diode illuminator. Reducing, relatively reducing the failure rate, and less power relative to avoid excessive heat accumulation, monomer formation is easy to fabricate and easy to combine into a large illumination format, and can be produced with the light guide plate when manufacturing • _ production of diffuse cones An illuminating diaphragm that achieves effective uniform brightness diffusion, whether in combination or uniform brightness, has an innovative application method, and is easy to manufacture in a large amount and facilitates automated production due to ease of manufacture, and the wire 2 is singular It is formed outside, or embedded in place, so it is easy to change. If the invention is used as a backlight, the production unit can simplify the cost, so that (4) can be greatly _ energy, and the production is excellent. The description of the above embodiments is a preferred embodiment of the present invention. The equivalent of the light guide plate and the diffusing cone, and the expansion of the point light source into a planar diaphragm are all the rights and scope of the present invention. . BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of the present invention. Fig. 2 is a schematic view showing the change of the shape of the cone of the present invention. Fig. 3 is a schematic view showing the implementation of the multicolored optical surface of the tip of the cone of the present invention. Fig. 4 is a schematic view showing the reflection of the bottom of the light guide plate of the present invention. Figure 5 is a schematic view of the light guide plate with oblique sides of the present invention. Figure 6 is another embodiment of Figure 5. Fig. 7 is another embodiment of the light guide plate of the present invention. 200846591 Figure 8 is a schematic view of the reflection element at the bottom of the light guide plate of the present invention. Figure 9 is a schematic view showing the optical bevel of the side of the light guide plate of the present invention. Figure 10 is a schematic illustration of the array combination of the present invention. [Main component symbol description] 1 : Light guide plate 1, 1B: Optical thin plate 10: Generator 100: Beveled edge 101: Optical intervening material 11: Exit surface 12: Side surface 120: Reflective optical bevel 13: Bottom surface 130: Transparent perforation 2: Light source 3: beam diffusing cone 30: bottom side 30A: compensating optical surface 31: linear tapered surface 32: curved tapered surface 3 (10), 40: reflecting surface 4: reflecting element S: axis Bn: aperture B, B b B2 : Beam π · Normal A: Area 11