1314641 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種偏振光軸檢測裝置及其檢測方 法，尤指一種利用發光二極體多色光源轉盤，配合一可旋 轉檢偏振片之檢測裝置及其檢測方法’措由偵測該檢偏振 片與待檢測偏振元件偏振光軸一致時之角度，可得知該待 檢測偏振元件偏振光軸，該裝置之結構簡單、成本低，檢 測方式簡單，可快速檢測偏振元件偏振軸向，適於偏振元 件製造及應用等相關領域。 【先前技術】 按，偏振元件主要應用於光學領域，藉由光源配合偏 振元件具有特定偏振光軸之特性，可得到獨特之出光效 果，例如液晶顯示器背光模組，即利用光源搭配偏光膜之 偏振光軸軸向，使液晶顯示器面板呈現最佳顯示角度，據 此可知，液晶顯示器偏光膜對於液晶顯示器透光強度有極 大影響，然由於目前一般面板製造業者使用之偏光膜係由 上游廠商裁切後提供，裁切之好壞（影響偏振光軸方向）與 一致性無法立即判斷，往往在液晶顯示器組合完成進行檢 驗時才能發現，此時只能報廢或列入次級品，造成經濟損 失。 因此，即使偏光膜製造業者已有出貨檢驗，但部分液 晶顯示器業者仍會於偏光膜進料時，再次對偏光膜進行進 料檢驗，然而傳統偏振光軸檢測裝置為了達到高檢測解析 -1314641 * 度，往往採用許多元件組成，並配合複雜之運算判斷以分 • 析檢測結果；而近年來，由於發光二極體具有體積小、耗 . 電量低、元件壽命長、無須暖燈時間、反應速度快等優點， 因此利用RGB(紅、綠、藍）混光，或多晶形RGB(紅、綠、 藍）封裝型式之發光二極體為背光源之液晶顯示器已成為 趨勢，換言之，對於採用發光二極體為背光源之液晶顯示 ' 器，其偏光膜之偏振光軸必須同時符合RGB(紅、綠、藍） 三色出光，方能達到最佳顯示效果，也因此而提高該偏光 • 膜檢測之困難度。 請參閱圖一所示，美國發明專利第5247176號 「Infrared Laser Polarimeter」，該檢測裝置 20 包括紅 外光雷射21、光束斷續器23、相位延遲片30、31、偏振 片35、可程式旋轉控制器43、直流馬達42、多功能電表 28、41、光偵測器27、39及電腦47，待測物33設置於相 位延遲片30、31之間，再利用傅立葉分析運算判斷結果； 據上可知，該檢測裝置20之組成構件多、複雜，成本高、 • 維護維修困難，且其後端運算需用電腦處理，也必須搭配 複雜軟硬體，整體觀之，前述該習知專利案所提供之裝置 及方法雖可對偏光膜進行檢測，然其複雜之運算及分析， 嚴重影響檢測程序與效率。 因此，如何能有一種成本低、檢測方式簡單，可快速 ' 檢測偏光膜之檢測裝置，係為偏光膜製造及應用相關領域 業者迫切需要解決之重大課題。 【發明内容】 1314641 -種知技術之缺失，本發明之主要目的在於提出 =偏振先軸檢測裝置，其結_單、成本低，操作方式 間早、快速，可提高檢測效率。 乃1 =達到上述目的，本發明提出—種偏振光轴檢測裝置 it ，其包含—可旋轉之轉盤，於該轉盤上設有1314641 IX. Description of the Invention: [Technical Field] The present invention relates to a polarization axis detecting device and a detecting method thereof, and more particularly to a multi-color light source turntable using a light-emitting diode, which is combined with a rotatable polarizing plate The detecting device and the detecting method thereof can detect the polarization axis of the polarizing element to be detected by detecting the angle at which the polarizing plate of the polarizing plate is aligned with the polarization axis of the polarizing element to be detected, and the device has the advantages of simple structure and low cost, and detection The method is simple, and can quickly detect the polarization axis of the polarizing element, and is suitable for related fields such as manufacturing and application of the polarizing element. [Prior Art] According to the polarization component, it is mainly used in the field of optics. The light source and the polarizing element have the characteristics of a specific polarization axis, so that a unique light-emitting effect can be obtained, for example, a liquid crystal display backlight module, that is, a polarization of a polarizing film using a light source. The axial direction of the optical axis makes the liquid crystal display panel exhibit the best display angle. According to this, the polarizing film of the liquid crystal display has a great influence on the light transmission intensity of the liquid crystal display, but the polarizing film used by the general panel manufacturer is currently cut by the upstream manufacturer. After the provision, the quality of the cutting (affecting the direction of the polarization axis) and the consistency can not be immediately judged, often found in the liquid crystal display combination to complete the inspection, at this time can only be scrapped or included in the secondary products, resulting in economic losses. Therefore, even if the polarizer manufacturer has already shipped the inspection, some liquid crystal display manufacturers will still conduct the inspection of the polarizing film again when the polarizing film is fed. However, the conventional polarization axis detecting device achieves high detection and resolution -1314641 * Degree, often composed of many components, combined with complex calculations to separate the test results; in recent years, due to the small size, consumption of the light-emitting diode, low power, long component life, no need for warm-up time, reaction Fast speed and other advantages, so the use of RGB (red, green, blue) mixed light, or polycrystalline RGB (red, green, blue) package type of light-emitting diodes as a backlight LCD has become a trend, in other words, for adoption The light-emitting diode is a backlight liquid crystal display device, and the polarization axis of the polarizing film must simultaneously conform to the RGB (red, green, blue) three-color light output to achieve the best display effect, thereby improving the polarization. The difficulty of membrane detection. Referring to FIG. 1, U.S. Patent No. 5,247,176, "Infrared Laser Polarimeter", the detecting device 20 includes an infrared laser 21, a beam interrupter 23, phase retarders 30, 31, a polarizing plate 35, and a programmable rotation. The controller 43, the DC motor 42, the multi-function meter 28, 41, the photodetectors 27, 39 and the computer 47, the object to be tested 33 is disposed between the phase retarders 30, 31, and then uses the Fourier analysis to determine the result; It can be seen that the detecting device 20 has many components, complicated, high cost, difficult maintenance and repair, and the back-end computing needs to be processed by a computer, and must also be combined with complicated software and hardware. As a whole, the aforementioned patent case is known. The device and method provided can detect the polarizing film, but the complicated calculation and analysis seriously affect the testing procedure and efficiency. Therefore, there is a low-cost, simple detection method that can quickly detect the detection device of the polarizing film, which is an important problem that the industry is urgently needed to solve in the field of polarizing film manufacturing and application. SUMMARY OF THE INVENTION 1314641 - The lack of a known technique, the main purpose of the present invention is to propose a polarization front-axis detecting device, which has a low-cost, low-cost operation, and an early and rapid operation mode, which can improve the detection efficiency. 1 = to achieve the above object, the present invention provides a polarization axis detecting device it, which comprises a rotatable turntable, which is provided on the turntable
一^光源可投射出不同色紐，該光投射路徑上依序設有 一檢，振片及-光制模組’該檢偏振片係可旋轉地且具 有&角度之偏振光轴，該光偵測模組係用以接受通過哼 片之光線；將待檢測偏振元件設置於該光源與該檢 ，振片間，驅動該轉盤轉動，調整該複數光源可位於一特 定投射位置，使投射光線依序通過該待檢測偏振元件、該 片i，到達該光_模組，藉由該光偵測模組偵測 不同光源穿透該檢偏振片之光線強度，並判斷產生最大穿 透光強度時之角度’即為該待測偏振元件之偏光轴之角度。 =到上述目的，本發明更提出一種偏振光軸檢二 法，其包含： U)轉動-具有複數可發出不同色光之光源之㈣，使 設置於該轉盤上之其中之-光源至1定投射位 置； (b) 该光源投射光線通過一待檢測偏振元件，形成一 穿透光； (c) 該第一穿透光投射至一可旋轉之檢偏振片，形成第 二穿透光； / ⑷該第二穿透光投射至—光制模組，由該光摘測模 組偵測該第二穿透光強度； ' 8 ^ 1314641 ' (e)轉動該轉盤，使設置於該轉盤上之另一光源到達該 特定投射位置； . (f)重複上述步驟（b)〜（e)，直至該光偵測模組依序偵 測到所有設置於該轉盤上之光源所產生之第二穿 透光強度。 較佳的是，該轉盤係可以機械或電性驅動，或以人工 驅動。 較佳的是，該轉盤係可以馬達、傳動皮帶等驅動裝置 馨 驅動。 較佳的是，該光源係為指向性光源。 較佳的是，該指向性光源係為發光二極體或雷射發光 二極體。 較佳的是，該複數光源可發出之不同色光係為白色、 RGB(紅、綠、藍）三原色其中之一或其組合。 較佳的是，該檢偏振片係由馬達、傳動皮帶等驅動裝 置驅動旋轉。 • 較佳的是，該檢偏振片之旋轉軸向係與該光投射路徑 相互平行。 較佳的是，該檢偏振片係可作360度全圓周連續旋轉。 較佳的是，該光源與該檢偏振片之間設有一承載台， 係用以承載待檢測偏振元件。 ' 較佳的是，該承載台上設有圓周角度指示刻度，用以 指示該待檢測偏振元件之置放角度。 較佳的是，該光偵測模組包含： 一光偵測器，係用以偵測通過該檢偏振片之光穿透率 9 • 1314641 並產生信號； - 一控制單元，係用以接收該光偵測器所偵測之光穿透 . 率信號，並可對該信號進行分析處理。 較佳的是，該控制單元更包含一顯示裝置，該顯示裝 置係用以顯示該控制單元所分析處理之信號内容。 較佳的是，該控制單元係與該檢偏振片電性連接，用 以控制該檢偏振片。 較佳的是，該光源更包括： 參 一透鏡，係設置於該光源之光投射路徑上並可直接供 光線通過； 一線性偏光器，係用以接收通過該透鏡之光線，用以 調整該光線朝向一定方向偏振。 較佳的是，該線性偏光器所調整之光線射出方向係平 行於該檢偏振片之旋轉軸心方向。 為使貴審查委員對於本發明之結構目的和功效有更 進一步之了解與認同，茲配合圖示詳細說明如后。 【實施方式】 以下將參照隨附之圖式來描述本發明為達成目的所使 用的技術手段與功效，而以下圖式所列舉之實施例僅為輔 助說明，以利貴審查委員暸解，但本案之技術手段並不限 於所列舉圖式。 請參閱圖二所示，本發明提供之偏振光軸檢測裝置 10，其主要係由一可旋轉之光源轉盤20、一可旋轉之檢偏 振片30及一光偵測模組40所構成，該光源轉盤20與該檢 •1314641 偏振片30之間可供設置一待檢測偏振元件5〇，該待檢測 偏振70件50係為具有一定偏振光軸之片材，例如液晶顯示 器之偏光膜。 《 月ί)述邊光源轉盤2〇係由一轉盤21及複數可發出不同 色光之指向性^源22a、22b所構成，該轉盤21具有旋轉 中心211 ’可藉由馬達、傳動皮帶等驅動裝置（圖中未示出） 或機械電性驅動旋轉，亦可以人手操作旋轉，該複數之指 向性光源22a、22b可採用發光二極體、雷射發光二極體等 ，，將该複數之指向性光源22a、22b設置於該轉盤Μ上， 藉由驅動该轉盤21旋轉，可調整該不同位置之指向性光源 22a、22b到達所需之指定位置（如圖示該光投射路徑c)， ^於該指向性光源22a、22b之佈置位置，則以等角、等距 %繞該轉盤21之旋轉中心2Π為佳，例如圖示等角、等距 環繞該轉盤21之旋轉中心211設置該二指向性光源22&、 22b’則每旋轉180度即可變換一指向性光源’或如圖三所 不該光源轉盤120，其係等角、等距環繞該轉盤121之旋 轉中心1211設置三指向性光源122R、122G、122β，分別 代表RGB(紅、綠、藍）三原色，每旋轉12〇度即可變換不 同之指向性光源122R、122G、122B，以此類推；至於該指 向性光源，除設置RGB(紅、綠、藍）三色外，亦可以白色 光源完全或部份替代之，或以白色光源同時搭配RGB(紅、 綠、藍）三色，視實際所需而決定；如圖所示，該光源22& 發出光線Lo，該光線lg通過該待檢測偏振元件5〇後，可 形成一第一穿透光Li。 至於該可旋轉之檢偏振片30，其係連接如馬達、傳動 1314641 皮帶等之驅動裝置（圖中未示出）驅動可作360度全圓周連 續旋轉，該檢偏振片30可採用與該待檢測偏振元件50同 類之具有一定偏振光軸之片材；如圖所示，前述該第一穿 透光Li前進並穿透該檢偏振片30後可形成一第二穿透光 L2，該第二穿透光L2再繼續前進至該光偵測模組40。 該光偵測模組40，係包含相互電性連接之一光偵測器 41、一控制單元42，以及一顯示裝置43，該光偵測器41 可偵測該第二穿透光L2之強度，並產生信號傳送至該控制 單元42，該控制單元42接收信號後，可對該信號進行分 析處理，如一般人士所熟知，該控制單元42可為一單晶片 或電腦處理裝置或軟體，對所接收之信號進行分析處理或 紀錄，此外，該控制單元42亦可電性連接驅動該轉盤21 以及該檢偏振片30之驅動裝置，用以控制調整該轉盤21、 該檢偏振片30之轉速，同時，可將分析處理之信號内容、 參數設定等結果顯示於該顯示裝置43上，而該顯示裝置 43同時可用以顯示電源連接狀態、或整體機組之運作狀態。 藉此，由該光源22a發出光線Lo，依序通過該待檢測 偏振元件50、該檢偏振片30，形成該第一穿透光Li、該第 二穿透光L2到達該光偵測模組40，理想狀況下，該光線 Lo、該第一穿透光Li、該第二穿透光L2係為一筆直光線， 其光投射路徑C係與該檢偏振片30之旋轉軸向相互平行， 為使該光源2 2 a發出之光線L 〇可被充分投射至該待檢測偏 振元件50上，該光源22a可配合一透鏡23、一線性偏光 器24，藉由該透鏡23準直，再藉由該線性偏光器24將光 線Lo形成線性偏振，可使該光源22a發出之光線Lo達到最 卩14641 贅述。 偏振片3〇V= ’ _㈣單元42可紀錄不同光源下，該檢 由—分析步‘ι/度’以及各旋轉角度時之光強度，再經 旋轉角度Γϋ斷各不同色光光源下最大穿透光強度時之 振光軸檢偏振片30與該待檢測偏振元件50之偏 各不同色弁二其1穿透率最大，可由該控制單元 42擷取 角度，並^取大光強度時之該檢偏振片30之旋轉 待檢测偏振元件== 置上’如此，即可快速檢測該 調說明的3，Γ 冋色光光源下之偏振光軸；必須強 在於檢測:振元光軸檢測裝置，其目的 偏振元件5η μ 貝τ、爲振光軸是否與標示於該待檢測 3〇每旋㈣軸相符合，換言之’該檢偏振片 測偏振元件振光軸必定會與該待檢 振元㈣上之偏振光轴標示;否=用以判斷該待檢測偏 方法综測 可投射出不同色光線，該光投射路徑上^光源 片及一光偵測模組，該檢偏振片“轉：檢偏振 度之偏振光軸，該光偵測模組係用^轉地且f —定角 之光線；將待檢測錢元件設置㈣過該檢偏振片 間，驅動該轉㈣動，㈣簡數^光源與該檢偏振片 =’使投射光，過該待檢剛 = 源穿透該檢偏振片之光線強度，二^模組偵测不同光 及別斷產生最大穿透光強 14 1314641 度時之角度，即為該待測偏振元件在不同色光光源下之偏 •光軸之角度；該檢測裝置之結構簡單、成本低，操作方式 .簡單、快速，可提高檢測效率，適於偏振元件應用與製造 相關領域。 惟以上所述者，僅為本發明之最佳實施例而已，當不 ' 能以之限定本發明所實施之範圍。即大凡依本發明申請專 利範圍所作之均等變化與修飾，皆應仍屬於本發明專利涵 蓋之範圍内，謹請貴審查委員明鑑，並祈惠准，是所至 • 禱。 【圖式簡單說明】 圖一係美國發明專利第5247176號「Infrared laser polarimeter」之結構示意圖。 圖二係本發明之系統架構示意圖。 圖三係本發明之光源轉盤另一較佳實施例之結構示意 圖。 零 圖四係本發明之操作步驟流程圖。 【主要元件符號說明】 10-檢測裝置 20、 120-光源轉盤 21、 121-轉盤 211、1211-旋轉中心 22a、22b、122R、122G、122B-光源 15 1314641 23- 透鏡 24- 線性偏光器 30-檢偏振片 4 0 _光偵測模組 41- 光偵測器 42- 控制單元 43- 顯示裝置 5 0 _待檢測偏振元件 C-光投射路徑a light source can project different color gamuts, and the light projection path is sequentially provided with a check, the oscillating plate and the light-modulating module. The detecting polarizing film is rotatably and has a polarizing optical axis of & angle. The detecting module is configured to receive the light passing through the cymbal; the polarizing element to be detected is disposed between the light source and the detecting and the vibrating piece, and the rotating wheel is driven to rotate, and the plurality of light sources can be adjusted to be at a specific projection position to make the projected light The light detecting module detects the polarizing element to be detected, and the film i reaches the light_module, and the light detecting module detects the light intensity of different light sources penetrating the polarizing plate, and determines the maximum transmitted light intensity. The angle of time is the angle of the polarization axis of the polarizing element to be tested. For the above purpose, the present invention further provides a polarization axis inspection method, which comprises: U) rotation - (four) having a plurality of light sources capable of emitting different colors of light, such that the light source to the fixed projection is disposed on the turntable (b) the light source projects light through a polarization element to be detected to form a transmitted light; (c) the first transmitted light is projected onto a rotatable polarizing plate to form a second transmitted light; / (4) The second penetrating light is projected to the light-modulating module, and the light-picking module detects the intensity of the second transmitted light; ' 8 ^ 1314641 ' (e) rotating the turntable to be disposed on the turntable The other light source reaches the specific projection position; (f) repeating the above steps (b) to (e) until the light detecting module sequentially detects all the second light generated by the light source disposed on the turntable Light transmission intensity. Preferably, the carousel is mechanically or electrically driven or manually driven. Preferably, the turntable is driven by a drive such as a motor or a drive belt. Preferably, the light source is a directional light source. Preferably, the directional light source is a light emitting diode or a laser emitting diode. Preferably, the light source of the plurality of light sources is one of white, RGB (red, green, blue) or a combination thereof. Preferably, the polarizer is driven to rotate by a driving device such as a motor or a drive belt. • Preferably, the rotational axis of the polarizer is parallel to the light projection path. Preferably, the polarizer is continuously rotated 360 degrees in a full circumference. Preferably, a carrying platform is disposed between the light source and the detecting polarizer for carrying the polarizing element to be detected. Preferably, the stage is provided with a circumferential angle indicating scale for indicating the placement angle of the polarizing element to be detected. Preferably, the photodetection module comprises: a photodetector for detecting a light transmittance of the polarizing plate passing through the polarizing plate 9 1314641 and generating a signal; - a control unit for receiving The light detected by the photodetector penetrates the rate signal and can be analyzed and processed. Preferably, the control unit further comprises a display device for displaying the signal content processed by the control unit. Preferably, the control unit is electrically connected to the polarizer for controlling the polarizer. Preferably, the light source further comprises: a reference lens disposed on the light projection path of the light source and directly for passing light; a linear polarizer for receiving light passing through the lens for adjusting the light source The light is polarized in a certain direction. Preferably, the direction in which the light is adjusted by the linear polarizer is parallel to the direction of the rotation axis of the polarizer. In order to enable the reviewing committee to have a better understanding and approval of the structural purpose and efficacy of the present invention, the detailed description is as follows. [Embodiment] Hereinafter, the technical means and effects of the present invention for achieving the object will be described with reference to the accompanying drawings, and the embodiments listed in the following drawings are only for the purpose of explanation, so that the reviewer understands, but the case Technical means are not limited to the illustrated figures. As shown in FIG. 2 , the polarization axis detecting device 10 of the present invention is mainly composed of a rotatable light source turntable 20 , a rotatable polarizing plate 30 and a light detecting module 40 . Between the light source turntable 20 and the inspection/1314641 polarizing plate 30, a polarizing element 5 to be detected can be disposed, and the polarized light 70 member 50 is a sheet having a certain polarization axis, such as a polarizing film of a liquid crystal display. The "monthly" light source turntable 2 is composed of a turntable 21 and a plurality of directivity sources 22a, 22b which can emit different color lights. The turntable 21 has a rotation center 211' which can be driven by a motor, a drive belt or the like. (not shown in the figure) or mechanically driven to rotate, or manually rotated, the plurality of directional light sources 22a, 22b may use a light-emitting diode, a laser light-emitting diode, etc., pointing the complex number The sexual light sources 22a, 22b are disposed on the turntable, and by driving the turntable 21 to rotate, the directional light sources 22a, 22b at different positions can be adjusted to reach a desired designated position (as shown in the light projection path c), ^ The arrangement positions of the directional light sources 22a, 22b are preferably equiangular, equidistant % around the center of rotation 2 of the turntable 21, for example, the same angle, equidistantly surrounding the center of rotation 211 of the turntable 21 The directional light source 22&, 22b' can change a directional light source every time it is rotated by 180 degrees or the light source turntable 120 as shown in FIG. 3, which is equiangularly and equidistantly disposed around the rotation center 1211 of the turntable 121. Sex light source 122R, 122G, 122 β, respectively representing RGB (red, green, blue) three primary colors, each rotation of 12 degrees can change different directional light sources 122R, 122G, 122B, and so on; as for the directional light source, in addition to setting RGB (red, green , blue) three colors, you can also replace the white light source completely or partially, or white light source with RGB (red, green, blue) three colors, depending on the actual needs; as shown, the light source 22 & The light L1 is emitted, and the light lg passes through the polarization element 5 to be detected to form a first penetrating light Li. As for the rotatable polarizing plate 30, which is driven by a driving device (not shown) such as a motor, a driving 1314641 belt or the like, can be rotated 360 degrees in a full circumference, and the polarizing plate 30 can be used Detecting a sheet having a polarization axis of the same type as the polarizing element 50; as shown, the first penetrating light Li advances and penetrates the polarizing plate 30 to form a second penetrating light L2. The second penetrating light L2 then proceeds to the light detecting module 40. The light detecting module 40 includes a photodetector 41 electrically connected to each other, a control unit 42, and a display device 43. The photodetector 41 can detect the second penetrating light L2. The intensity is transmitted to the control unit 42. After receiving the signal, the control unit 42 can analyze the signal. As is well known in the art, the control unit 42 can be a single chip or a computer processing device or software. The control unit 42 can be electrically connected to drive the turntable 21 and the driving device of the polarizing plate 30 for controlling the adjustment of the turntable 21 and the polarizing plate 30. At the same time, the result of the signal processing, parameter setting and the like of the analysis processing can be displayed on the display device 43, and the display device 43 can be simultaneously used to display the power connection state or the operation state of the entire unit. Thereby, the light source Lo is emitted from the light source 22a, and the polarizing element 50 to be detected and the polarizing plate 30 are sequentially formed to form the first penetrating light Li and the second penetrating light L2 to reach the light detecting module. 40. Ideally, the light lo, the first transmitted light Li, and the second transmitted light L2 are straight rays, and the light projection path C is parallel to the rotation axis of the polarizing plate 30. In order to make the light L 〇 emitted by the light source 2 2 a can be fully projected onto the polarization element 50 to be detected, the light source 22a can cooperate with a lens 23 and a linear polarizer 24, and the lens 23 can be collimated and then borrowed. By the linear polarizer 24, the light ray Lo is linearly polarized, and the light ray Lo emitted from the light source 22a can be finally reached. Polarizer 3〇V= ' _(4) Unit 42 can record the light intensity of the different light sources, the detection step 'ι/度' and the angle of rotation, and then the maximum penetration of the different color light sources through the rotation angle When the light intensity is detected, the polarizing axis of the polarizing plate 30 and the polarizing element 50 to be detected are different in color, and the transmittance is the largest, and the angle can be obtained by the control unit 42 and the large light intensity is taken. Detecting the rotation of the polarizing plate 30 to be detected. The polarization element to be detected is set to be 'supplied' so that the polarization axis of the Γ 光 光 light source can be quickly detected; it must be strong in detection: the vibration element optical axis detecting device, The purpose of the polarizing element 5η μ τ is whether the vibration axis coincides with the axis of the rotation (4) indicated in the 3 , to be detected, in other words, the vibration axis of the polarizing element of the polarization detecting plate must be related to the vibration element to be detected (4) The polarization axis of the upper surface is marked; no = used to determine the to-be-detected partial method, the comprehensive measurement can project different color rays, the light projection path is a light source piece and a light detection module, and the detection polarization plate is "turned: Polarization axis of polarization, the light detection module is used Ground and f - fixed angle light; set the money component to be detected (4) between the polarizing plates, drive the turn (four) move, (4) the simple number ^ light source and the test polarizer = 'make the projected light, pass the test = the source penetrates the intensity of the light of the polarizer, and the two modules detect the different light and the angle at which the maximum transmitted light intensity is 14 1314641 degrees, which is the deviation of the polarized component to be measured under different color light sources. • The angle of the optical axis; the detection device has a simple structure, low cost, simple and fast operation mode, can improve the detection efficiency, and is suitable for the application and manufacturing fields of the polarizing element. However, the above is only the most The preferred embodiments are not intended to limit the scope of the invention, and the equivalent variations and modifications made by the scope of the invention are still within the scope of the invention. The committee member clearly understands and prays for the best. It is the prayer to be prayed. [Simplified description of the drawings] Figure 1 is a schematic diagram of the structure of the "Infrared laser polarimeter" of US Patent No. 5247176. Figure 2 is a schematic diagram of the system architecture of the present invention. Figure 3 is a schematic view showing the structure of another preferred embodiment of the light source turntable of the present invention. Zero Figure 4 is a flow chart of the operational steps of the present invention. [Description of main component symbols] 10-Detecting device 20, 120 - Light source turntable 21, 121 - Turntable 211, 1211 - Center of rotation 22a, 22b, 122R, 122G, 122B - Light source 15 1314641 23 - Lens 24 - Linear polarizer 30 - Polarizer 4 0 _Light Detection Module 41 - Light Detector 42 - Control Unit 43 - Display Device 5 0 _ Polarization Element to Be Detected C - Light Projection Path
Lo-光源投射之光線 Li-第一穿透光 L2-第二穿透光Lo-light projected light Li-first transmitted light L2-second transmitted light