200829893 九、發明說明： ’【發明所屬之技術領域】 本發明疋有關於一種偏光膜檢測裝置，特別是指一種 可以在生產線上直接檢測偏光膜的光學性質的偏光膜線上 檢測裝置，及其檢測方法。 【先前技術】200829893 IX. Description of the invention: '[Technical field to which the invention pertains] The present invention relates to a polarizing film detecting device, and more particularly to a polarizing film line detecting device capable of directly detecting the optical properties of a polarizing film on a production line, and detection thereof method. [Prior Art]
隨著液晶顯示器的廣泛使用，為了達到使顯示器明亮 、清晰等要求’其中-個用於顯示器中的重要元件—偏光膜 :必需具備高透光率、高偏光性等光學性質，而且因為液 曰頌示所用的光滹均為非偏振光’經過偏光膜即可轉變 成具有-定方向的線偏振光，如此才可有效地利用液晶晶 包來控制光的開關.，所以偏光膜之吸收軸角度的量測也非 常重要。 a 〜久队神月度的例口 ’八邓w 是必需在偏光膜製造完成後，再另外放人該機台中檢測 亦即，無法在生產線上直接檢測偏光臈的性質。另一方 ’雖然有部份業者製造提供線上量測的機台，但是生量 準度低、量測時間長、機構體積大通用於移動式 二㈣s測方式，故此種機台應雜不佳。所以要 態產線上直接量測偏光膜之吸收軸角度拯為不易，使 者無法直接於線上完成—貫化的製造㈣作n > ==、檢測不方便等缺失。此外，除了偏光膜❸ 报重^夕’ί偏光度及單體透過率等光學性質的量測^ 而目則市面上尚無於線上一併量測偏光膜之該, 200829893 予’處的儀ϋ ’故’開發出於線上直接量測偏光膜之光 學性質的儀器，實為一重要課題。 【發明内容】 因此，本發明之目的，即在提供一種可以於生產線上 直接量測偏光膜的吸峰角度、偏光度’及單體透過率等 光學性質的偏光膜線上檢測裝置及其檢測方法。 於是，本發明偏光膜線上檢測裝置，是於量偏 膜的先學性質，所述.偏光料於生產線上沿—生產線= 方向移動，而該檢測裝置包含:至少一軸向量測單元、一 光源座、二光學檢測單元，以及一光譜儀。 該軸向量測單元包括：—個間隔設在該偏光膜之一側 的光源產生器、-個可轉動地設在該光源產生器與偏光膜 間的標準偏光片，以及一個設在該偏光膜之另一側_ 測器，該㈣測器並接收自該光源產生器發出而通過該偏 光膜的光訊號。該光源座是間隔設在該偏光膜之一側並用 於產生先源。該等光學檢測單元是設於該生產線傳輸方向-上相對該軸向量測單元的下$，皆包括：—個設在該偏光 膜之一側並接受該光源座產生之光源的聚光件、一個設在 該聚光件與偏賴㈣標準偏光片，以及_個對應該‘光 件而設在該偏光膜之另—側的光岐器。該光譜儀連接所 述光均句ϋ，並接收及分析自該等光均句器傳送而來的光 訊號。 本發明偏光膜線上檢測方法，是利'上述偏光膜線上 檢測裝置來檢測偏光膜的光學性質，並包含以下步驟： 200829893 (1 )在該偏光膜生產線傳輸方向的一相對上游彳立置 量測該偏光膜之至少一個量測點的吸收麵角度； (2)在該偏光膜生產線傳輸方向的一相對下游位置， 使光學檢測單元對應該量測點； (3 )根據該量測點的吸收軸角度，調整該等光學檢測 單元的標準偏光片的設置角度，使其中一個標準偏光片的 吸收軸與該量測點的吸收軸平行，另一個標準偏光片的吸 收軸與該量測點的吸收軸垂直；及 ... - ... . (4 )分析並計算通過該偏光膜之量測點與該等光學檢 測單元的光訊號，並求出該偏光膜的偏光度與單體透過率 其中’步驟（1 )較佺地是同時量測該偏光膜上的數個 量測點的吸收軸角度，步驟（2)中，該等光學檢測單元是 可以沿一値移動方向移動並對應該偏光膜的其中一個量測 點’進而量測該量測點的偏光度與單體透過率。 藉由該等軸向量測單元及光學檢測單元是直接於生產 線上設在該偏光膜之兩側，並可以於線上直接完成檢測作 業，故本發明確實具有檢測方便、作業省時等優點。 【實施方式】 ' · - - - . 有關本發明之前述及其他技術内容、特點與功效，在 以下配合麥考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 參閱圖1、2、3,本發明偏光膜線上檢測裝置之較佳實 %例’是用於量測偏光膜81的光學性質，該偏光膜81為 200829893 第二面812 ’而其兩長側邊是與一捲動裝置82結合，由於 偏光膜81之原膜的吸收軸為混亂不規則排列，故偏光膜81 在製作時，需要經過-個「拉伸」步驟，使其吸_^ 沿特定方向排列以達到偏光的功能。所述捲動裝置、2可使 偏光膜81於過程當中沿一生產線傳輸方向91移動，在本 實施例中，該生產線傳輸方向91是指該偏光膜Η的長度 方向。所述偏光膜線上檢測裝置包含：數個軸向量測單元1 、一滑軌2、一光源座3、二個光學檢測單元4、$、—光譜With the widespread use of liquid crystal displays, in order to make the display bright and clear, etc. - one of the important components used in the display - polarizing film: must have high optical transmittance, high polarization, etc., and because of liquid helium The apertures used in the display are all unpolarized light, which can be converted into linearly polarized light with a directional direction through the polarizing film, so that the liquid crystal crystal package can be effectively used to control the switching of the light. Therefore, the absorption axis of the polarizing film The measurement of the angle is also very important. a ~ Long-term team god monthly mouth ‘eight Deng w is necessary after the completion of the production of polarizing film, and then placed in the machine to detect, that is, can not directly detect the nature of the polarized 臈 on the production line. On the other hand, although some manufacturers manufacture machines that provide on-line measurement, the accuracy of the production is low, the measurement time is long, and the volume of the mechanism is used for the mobile two (four) s measurement method. Therefore, such machines should be poor. Therefore, it is difficult to directly measure the absorption axis angle of the polarizing film on the production line, so that the manufacturer cannot directly complete the on-line manufacturing (four) for n > ==, inconvenient detection and the like. In addition, in addition to the optical properties of the polarizing film ❸ ^ ' ί ί ί ί 及 及 及 及 及 及 及 及 及 ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί 光学 光学 光学 光学 光学 2008 2008 2008 2008 2008 2008 ϋ '故' The development of an instrument for measuring the optical properties of a polarizing film directly on the line is an important issue. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a polarizing film on-line detecting device and a detecting method thereof capable of directly measuring optical characteristics such as peak absorption angle, polarization degree, and single transmittance of a polarizing film on a production line . Therefore, the polarizing film on-line detecting device of the present invention is a pre-learning property of the amount of the polarizing film, wherein the polarizing material moves along the production line = direction on the production line, and the detecting device comprises: at least one axis vector measuring unit, a light source holder, two optical detection units, and a spectrometer. The axis vector measuring unit comprises: a light source generator disposed on one side of the polarizing film, a standard polarizer rotatably disposed between the light source generator and the polarizing film, and a polarizing film disposed on the polarizing film The other side of the membrane, the detector, receives the optical signal emitted from the light source generator and passes through the polarizing film. The light source holder is spaced apart on one side of the polarizing film and used to generate a precursor. The optical detecting unit is disposed in the transmission direction of the production line with respect to the lower vector of the axis vector measuring unit, and includes: a concentrating member disposed on one side of the polarizing film and receiving the light source generated by the light source holder. And a photoreceptor disposed on the concentrating member and the biasing (four) standard polarizer, and _ a pair of light members disposed on the other side of the polarizing film. The spectrometer connects the light sentences and receives and analyzes the optical signals transmitted from the optical homophones. The method for detecting a polarizing film on-line of the present invention is to use the above-mentioned polarizing film on-line detecting device to detect the optical property of the polarizing film, and comprises the following steps: 200829893 (1) A relatively upstream standing measurement in the transmission direction of the polarizing film production line The absorption surface angle of at least one measuring point of the polarizing film; (2) at a relatively downstream position in the transmission direction of the polarizing film production line, so that the optical detecting unit corresponds to the measuring point; (3) absorption according to the measuring point The axis angle is adjusted to adjust the setting angle of the standard polarizer of the optical detecting unit such that the absorption axis of one of the standard polarizers is parallel to the absorption axis of the measuring point, and the absorption axis of the other standard polarizer and the measuring point are The absorption axis is perpendicular; and... - (4) analyzing and calculating the optical signal passing through the measuring point of the polarizing film and the optical detecting unit, and determining the polarization degree and the monomer transmission of the polarizing film. In the step (1), the absorption axis angles of the plurality of measurement points on the polarizing film are measured at the same time. In the step (2), the optical detecting units are movable in a moving direction and Wherein a polarizing film should measurement point 'Further polarization degree measured transmittances with the monomer of the measuring point. Since the isometric vector measuring unit and the optical detecting unit are directly disposed on the two sides of the polarizing film on the production line, and the detecting work can be directly performed on the line, the present invention has the advantages of convenient detection, time saving, and the like. [Embodiment] The above-mentioned and other technical contents, features, and effects of the present invention will be apparent from the following detailed description of a preferred embodiment of the invention. Referring to Figures 1, 2, and 3, the preferred embodiment of the polarizing film on-line detecting device of the present invention is for measuring the optical properties of the polarizing film 81. The polarizing film 81 is the second side 812' of 200829893 and its two long sides. The edge is combined with a scrolling device 82. Since the absorption axis of the original film of the polarizing film 81 is disorderly arranged, the polarizing film 81 needs to undergo a "stretching" step to make it suck. Arrange in a specific direction to achieve the function of polarized light. The scrolling device 2 can move the polarizing film 81 in a process line transport direction 91 during the process. In the present embodiment, the line transport direction 91 refers to the length direction of the polarizing film Η. The polarizing film on-line detecting device comprises: a plurality of axis vector measuring units 1, a slide rail 2, a light source holder 3, two optical detecting units 4, $, - spectrum
儀6，以及-連接該軸向量測單元]與該光譜儀6的電二 算元件7。 ' ^ °T 本實㈣之每―個軸向量測單元1是分別對應偏光膜 8 1上的不同置測點’並用於晉：ΒΛ η^· 〇 用於里/則偏先膜81之該等量測點的 吸收軸角度’皆包括：-與偏光膜81間隔並鄰近該偏光膜 81 811 11 > 源產生器11與偏光膜81間的標準偏光片（仏咖⑴咖 Polarizer > Π ’以及一個鄰近該偏光膜8丨之第二面⑽並 對應光源產生器11的光·,[器13。其中，所述光源產生哭 Η 811 ΐ2 ^ 的出光部111 ’在本實施例中，該光源產生器U是發射雷 射光’由於雷射光的同調性高、光束準直，對於本發明: 構件的架讀吸收㈣度的量測較為有利，但在實施時， 11〇 13 是用於接收自該等光源產生HU發出並通過該偏光膜81的 200829893 光訊號。 本實施例之滑軌2包括一個固定設置在該偏光膜Μ之 - 第一面二11下方的第一軌道2丨，以及一個位在該第二面812 上方的第一軌道22。該光源座3是間隔設置在該偏光膜81 之第一面8U的下方，並用於產生白光光源，且該先源座、 的光源是可以利用光纖管來分光，並分別傳送至該等光學 檢測單元4、5 〇 _ 送而來的白光，並各別架設在該滑軌2之左右兩侧，每_ 個光子彳』單元4、5都包括：-個可滑移地設置在該第一 執道21上並可集中光線的聚光件仆、51、一個設在聚光件 41、51與偏光膜81間的標準偏光片42、52，以及—個與 聚光件41、51對應並且可與該等聚光件41、51同步滑移 地設在該第二執道22上的光均勻器43、53。其中，所述光 句勻时43 53為積分球（integrating sph⑽），接收通過該 . 偏光膜81的光源，並可減少因光線之形狀、發散角度之變 .化所造成之量測誤差。 該光譜儀6是連接該等光均勻器43、53,並接收及分 析自。亥等光均勻裔43、53傳送而來的光訊號而進行光譜分 析。該電子計算元件7連接該軸向量測單元、之光偵測器 與該光瑨儀6，並接收自光偵測器13與光譜儀6傳送而 來的光訊號，再由其電腦程式計算出該偏光膜81的吸收轴 角度、偏光度與單體透體率，所述電子計算元件7具體例 為一台電腦。 200829893 在說日林料偏光膜“檢取法之I，再次說明本 發明在取得原膜㈣加工生錢上，是則捲動裝置82之 帶動，令偏光膜81往該生產線傳輸方向91移動，而所述 偏光膜檢測方法之較隹實施例、的步驟如下： (A'首先利用軸向量測單元i量測該偏光膜81之各 個量測點的吸收轴角度，該軸向量測單元！是在該偏光模 生產線傳輸方向91的一 fl宏；I：日料l 預疋相對上游位置進行量測，量測 時，該等光源產生器11會發射雷射光並經由標準偏光片12 後再通過該偏光膜8丨，在兩止 光片12相對該光源產生器n連也^同控制標準偏 U連績地轉動，藉此使通過桿準 偏光片12的光源持續以不同的偏振方向通過偏光膜81，而 ί源通過該偏光膜81後被吸收的光量，會隨著其偏振方向 與該偏光臈81之吸收軸間的夹角不同而變化，當光量變化 的—被光债測器13收集後，再傳送到電子計算元件7作 分析，即可得知該偏光膜81上該量測點的吸收轴角度。 而=明的是，本發明是一次設置數個轴向量測單元厂 ，以叫量測該偏細81上數個不同量難的吸收軸角产 ’如此可以及時反應出各量測點之_的相對^ 在貫施時，僅需要設置一組軸測單元即 目的。 里州早兀1即可達到量測 (Β)偏光膜81持續往該生產線傳輸方向91移動，使 其t 一個量測點在敎的時間後，會依序通過該等光與檢 .測单“、5。亦即，令該等光學檢測單元4、5是，： 膜生產線傳輸方向91的一相對該轴向量測單元】^ 10 200829893 置進行量測。 (C)在說明本發明量測該偏光膜81之偏 _ 透過率的古^ ^ ^ ^ ^ ^ 元度與早體 万法之前，在此先說明偏光度的定義為： X 100% kl - k2 kT~+ k2 單體透過率的定義為： j(kl + k2) 過率其二’、kV為光偏振方向平行待測物之穿透軸時的光这 ，、為光偏振方向垂直待測物之穿透轴時的光透過碎 ’以將kl與k2量測出來，再分別代入上述二個式子今 ，即可求得偏光膜81之偏光度與單體透過率。 旦又，但在量測偏光度與單體透過率時，僅兩 S測其中-個量測點即可，因此在實際量，先；驾 光學檢測單元4、s 、成紅、L、— κ更该’ 在〜⑺軌2上沿著一個移動方向92冻 回州動，讓光學檢測單元4、5可以對 】甘士 、 '丁H寺軸向量測單天 ，、中一個預定量測點的下游位置。在本實施由 ㈣㈣等光學檢測單元4、5移動並停駐至定點後，由友 该偏光膜η的移動速度已被預定，藉此被轴戶 ==達光學檢測單元4、5處的時間亦可= σ以進仃下述量測：該光源座3會產 並分光至該等光學檢測元4、5 先先3 ，、甲，该光學檢測單$ 11 200829893 4是用於量測kl，該光學檢測單元5是用於量測^，在量 ，：測kM，必需要轉動該標準偏光片,，使標準偏光片42 . ㈣收軸與該偏光膜81的吸收軸平行，在量測匕時，必 需要轉動該標.準偏光片52，使其吸收軸與該偏光膜Μ的吸 收轴垂直’而白光光源各別經由該等標準偏光片Cl偏 振後，通過該偏光膜81與光均勻器43、53，並傳送到該光 譜儀6進行光譜分析，最後即可由該電子計算元件7計算 Λ該偏細81之其卜個量咖㈣光度與單體透過率。 • 其中’上述光學檢測單元4、5在定點量測kl與k2的時間 … 大約1至2秒。 需要說明的是，該等標準偏光片42、52之吸收轴是分 別垂直與平行該偏光膜81的吸收軸而設置，換言之，伊^ 偏光片42、52的設置角度與該偏光膜81的吸收轴角^ 關’所以由該軸向量測單元丨作即時回饋，即可得知言:耸 標準偏光片42、52所應設置的角度。 、 凡4 5之可移動行程，是大於該偏光膜81的寬度，n 便測量該偏域8 i ±任—量測點的偏光度與單體透過率^ 益43、53之球狀内部空間的反射及漫射，使得光線射出令 光均勻益43、53後較為均勻，之後再由該光譜儀6分斤 句的光afl號’藉此提高測量之準確度與再現性。 綜上所述’本發明具有下列優點： 及光學檢測單元 本發明藉由該等軸向量測單元 12 200829893 • 4、5是直接於生產虹設在該偏賴81之_，故可以於 線上直接完成檢測作業’而不需要在偏光膜81整個製作完 ‘ 成後，取下並放入另外設置的機台作檢測，故本發明確實 具有檢測方便、作業省時等優點。 (2)本發明該等元件之架設與量測方式，適合多點量 測與移動式量測，其中該等軸向量測單元丨可以及時反應 出各量測點之吸收軸的相對角度，而該等光學檢測單元斗: 赢 5是可移動地安裝在滑軌2上，如此可以料^^ • 目的。 (3)本發明進一步還可以將檢測結果於線上直接提供 給製程m作為製程人㈣變適當之起始參數的依據 ，使接下來製作出的偏絲8丨之吸妹肖度、偏光度與單 體透過率等光學性質可以符合需求。 惟以上所述者，㈣本發明之較佳實施例而已，當不 ^此限定本發明實施之範圍’即大凡依本發明中請專利 範圍及發明說明内容所作夕館话 谷所作之間早的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋立體圖’顯示本發明偏光膜線上檢測裝置之 較佳實施例的一設備簡圖； 圖2是該較佳實_之功能方塊圖；及 圖3是一流程圖，顯示本發明偏光 膜線上檢測方法之 較佳實施例。 13 200829893 【主要元件符號說明】 1…·… …·軸向虽測單元 5…，… •…光學檢測單元 1卜.… •…光源產生器 5卜… χκ光件 111… •一·出光部 52 …·· •…標準偏光片 12 .…· •…標準偏光片 53 …·· •…光均勻器 13..… •…光偵測器 6·…… •…光譜儀 Z * /赏轨 尾于 < 异疋仵 2卜·… ……苐一軌道 81 ··… …·偏光膜 22”··. •…第二軌道 811… • ··*弟一面 3……· 光源座 812… •…第二面 4……· •…光學檢測單元 82*··，· …·捲動裝置 41…" •…聚光件 91…… …·生產線傳輸方向 42…" •…標準偏光片 92 ··… •…移動方向 43，··" •…光均勻器The meter 6, and - the shaft vector measuring unit are connected to the electric two-equivalent element 7 of the spectrometer 6. ' ^ °T Each of the real axis (four) of the axis vector measuring unit 1 corresponds to a different measuring point on the polarizing film 8 1 and is used for Jin: ΒΛ η ^ · 〇 for the inner / then the first film 81 The absorption axis angles of the equal measuring points all include: - spaced apart from the polarizing film 81 and adjacent to the polarizing film 81 811 11 > Standard polarizer between the source generator 11 and the polarizing film 81 (仏咖(1)咖Polarizer > Π 'and a light adjacent to the second surface (10) of the polarizing film 8丨 and corresponding to the light source generator 11, [the device 13] wherein the light source generates a light exiting portion 111 ′ of the crying 811 ΐ 2 ^ in this embodiment The light source generator U emits laser light. Due to the high coherence of the laser light and the collimation of the beam, it is advantageous for the present invention to measure the reading and absorption of the member (four degrees), but in practice, 11〇13 is used. Receiving from the light sources, the 200829893 optical signal emitted by the HU and passing through the polarizing film 81. The slide rail 2 of the embodiment includes a first track 2 fixedly disposed under the first surface 21 of the polarizing film 丨And a first track 22 positioned above the second face 812. The light source holder 3 is spaced The light source is disposed below the first surface 8U of the polarizing film 81 and used to generate a white light source, and the light source of the source block can be split by the optical fiber tube and transmitted to the optical detecting units 4 and 5 respectively. The white light sent from each other is erected on the left and right sides of the slide rail 2, and each of the photon unit 4, 5 includes: a slidably disposed on the first lane 21 and a concentrating member concentrating light, 51, a standard polarizer 42, 52 disposed between the concentrating members 41, 51 and the polarizing film 81, and a corresponding concentrating member 41, 51 and condensing with the illuminating members 41, 51 The optical homogenizers 43 and 53 are disposed on the second trajectory 22 in synchronism, wherein the optical tempering time 43 53 is an integrating sphere (integrating sph (10)), and the receiving light passes through the polarizing film 81. The light source can reduce the measurement error caused by the change of the shape and the divergence angle of the light. The spectrometer 6 is connected to the light homogenizers 43, 53 and receives and analyzes from the light. Spectral analysis is performed by the optical signal transmitted from 53. The electronic computing component 7 is connected to the axis vector measurement list. And the photodetector 6 and the photodetector 6 receive the optical signal transmitted from the photodetector 13 and the spectrometer 6, and then calculate the absorption axis angle and the polarization degree of the polarizing film 81 by the computer program. The monomer transmissibility, the specific example of the electronic computing component 7 is a computer. 200829893 In the Japanese forest material polarizing film "detection method I, once again, the invention is obtained in the original film (four) processing of the money, is the volume The moving device 82 drives the polarizing film 81 to move toward the line conveying direction 91, and the steps of the polarizing film detecting method are as follows: (A' firstly measure the polarized light by using the axis vector measuring unit i The absorption axis angle of each measurement point of the film 81, the axis vector measurement unit! It is a fl macro in the transmission direction 91 of the polarizing mode production line; I: the raw material l is pre-measured with respect to the upstream position, and when the measurement, the light source generator 11 emits the laser light and passes through the standard polarizer 12 Through the polarizing film 8丨, the two light-stopping sheets 12 are rotated relative to the light source generator n in the same manner as the control standard bias U, whereby the light source passing through the rod-aligning polarizer 12 continues to pass through different polarization directions. The amount of light absorbed by the polarizing film 81 and passing through the polarizing film 81 varies depending on the angle between the polarization direction and the absorption axis of the polarizing beam 81. When the amount of light changes, the optical debt detector After collecting 13 and transmitting it to the electronic computing component 7 for analysis, the absorption axis angle of the measuring point on the polarizing film 81 can be known. However, it is obvious that the present invention is to set up a plurality of axis vector measuring unit factories at a time, so as to measure the number of different absorption axis angles on the partial thickness 81, so that the measuring points can be detected in time. The relative of _ is only required to set a set of axonometric units. Lizhou early 兀1 can reach the measurement (Β) polarizing film 81 continues to move to the production line transmission direction 91, so that t a measurement point after the 敎 time, will pass the light and inspection. ", 5. That is, let the optical detecting units 4, 5 be: a measurement of the film production line transmission direction 91 relative to the axis vector measuring unit] ^ 10 200829893. (C) Describe the amount of the present invention Before measuring the partial _ transmittance of the polarizing film 81 and the early body method, the definition of the degree of polarization is first defined as: X 100% kl - k2 kT~+ k2 The rate is defined as: j(kl + k2) The rate of the second is ', kV is the light when the direction of polarization of the light is parallel to the axis of penetration of the object to be tested, and is the direction perpendicular to the axis of penetration of the object to be tested. The light is transmitted through the broken pieces to measure the k1 and k2, and then substituted into the above two equations, the polarization degree and the single transmittance of the polarizing film 81 can be obtained. Once again, the measurement of the partial brightness and the single In the case of body transmittance, only two S-measurement of one-measurement point can be used, so in the actual amount, first; driving optical detection unit 4, s, red, L, - κ On the ~(7) track 2, it is frozen back to the state along a moving direction 92, so that the optical detecting units 4, 5 can measure the single day of the Gans, 'Ding H temple axis vector, and the downstream of a predetermined measuring point. After the optical detecting unit 4, 5 such as (4) (4) moves and stops to a fixed point, the moving speed of the polarizing film η has been predetermined, whereby the axis is == reaches the optical detecting unit 4, 5 The time can also be = σ to enter the following measurement: the light source holder 3 will produce and split the optical detection elements 4, 5 first 3, A, the optical detection order $ 11 200829893 4 is used for the amount Measuring k1, the optical detecting unit 5 is used for measuring, in quantity, measuring kM, and the standard polarizer is required to be rotated to make the standard polarizer 42. (4) The retracting axis is parallel to the absorption axis of the polarizing film 81, When measuring enthalpy, it is necessary to rotate the target quasi-polarizer 52 such that its absorption axis is perpendicular to the absorption axis of the polarizing film ', and the white light source is polarized by the standard polarizer C, respectively, and then passes through the polarizing film. 81 and the light homogenizer 43, 53 and transmitted to the spectrometer 6 for spectral analysis, and finally by the electronic meter The component 7 calculates the tens of luminosity and the transmittance of the monomer of the partiality 81. • wherein the above optical detecting units 4 and 5 measure the time of k1 and k2 at a fixed point... about 1 to 2 seconds. The absorption axes of the standard polarizers 42, 52 are respectively disposed perpendicularly and parallel to the absorption axis of the polarizing film 81. In other words, the arrangement angle of the polarizers 42, 52 and the absorption axis angle of the polarizing film 81. ^OFF' So the instant feedback from the axis vector measuring unit can be used to know the angle that should be set by the standard polarizer 42, 52. The movable stroke of the 4 5 is larger than the polarizing film 81 The width, n measures the polarization of the bias field 8 i ± any measurement point and the reflection and diffusion of the spherical internal space of the single transmittance, 43, 53, so that the light is emitted to make the light uniform. After 53, it is more uniform, and then the light afl number of the spectrometer is 6 cents to improve the accuracy and reproducibility of the measurement. In summary, the present invention has the following advantages: and the optical detecting unit. The present invention is based on the isometric vector measuring unit 12 200829893 • 4, 5 is directly in the production rainbow set in the bias 81, so it can be online The detection operation is directly completed, and it is not necessary to take out the entire polarizing film 81, and then remove it and put it into another set machine for detection. Therefore, the present invention has the advantages of convenient detection, time-saving operation, and the like. (2) The erection and measurement methods of the components of the present invention are suitable for multi-point measurement and mobile measurement, wherein the isometric vector measurement unit can timely reflect the relative angles of the absorption axes of the measurement points. And the optical detection unit bucket: Win 5 is movably mounted on the slide rail 2, so that it can be used. (3) The present invention can further provide the detection result directly to the process m on the line as the basis for the process person (4) to change the appropriate starting parameter, so that the next produced partial slanting degree, polarization degree and polarization degree Optical properties such as monomer permeability can meet the demand. However, the above is a preferred embodiment of the present invention, and the scope of the present invention is not limited to the scope of the present invention. Equivalent variations and modifications are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a preferred embodiment of a polarizing film on-line detecting device of the present invention; FIG. 2 is a functional block diagram of the preferred embodiment; and FIG. 3 is a flow chart. A preferred embodiment of the method for detecting a polarizing film on the line of the present invention is shown. 13 200829893 [Explanation of main component symbols] 1...·.........Axis measurement unit 5...,...•...Optical detection unit 1 Bu.......Light source generator 5... χκ光 111... •1·Lighting section 52 ...·· •...standard polarizer 12 ..... •...standard polarizer 53 ...·· •...light homogenizer 13..... •...light detector 6·... •... spectrometer Z * / tour tail In < 异疋仵2卜·.........苐一81 81··... Polarized film 22”···....The second track 811... •··*The younger side 3...·Light source holder 812... • ...the second side 4...·•...Optical detection unit 82*······Rolling device 41..." •...Condenser 91... ...·Production line transmission direction 42..." •...standard polarizer 92 ··... •...moving direction 43,··" •...light homogenizer