1290220 九、發明說明: 【發明所屬之技術領域】 統之色彩分析儀，尤其是一種可對平面顯示器之光學與色 彩特性進行量測之光學感測系統及具有此光學感測系統之 色彩分析儀。 【先前技術】 種不同色彩，包括紫、素^ 照明委員會( International C〇mmissi〇n CIE)於1931年藉由人眼實驗’制訂一個三刺激值χγζ方 式表達各個顏色之色彩值，藉以量化各色彩相關裝置，如 數位相機、顯示器、印表機之色彩呈現。 圖。此色彩分析儀1具有偵測器10與一信號處理主 感測系統係接收來自顯示面板2上之待測區域搬的光線， 並將所接收之光線轉換為電訊號。這些電訊號再透過二電 翁30傳輸至信號處理主體20進行處理，以分析顯示面板 2之光學與色彩特性。 請參照第二圖所示，係一典型光學感測系統1〇〇之示 意圖。此光學感測糸統100具有一透鏡12〇、—光接收裝 置140與一取景光學裝置160。其中，光接收裂置⑽ 有一擴散片142、三個光譜修正濾光片144與三個並排的 1290220 光接收為146。擴散片142係位於透鏡120後方之聚焦平 面。光譜修正渡光片144係位於擴散片142之後方。而三 個光接收器146係分別位於相對應之光譜修正遽光片144 的後方。由待測區域MR所放射之光線，經由透鏡12〇使待 測區域MR成像至擴散片142上，再經由光譜修正濾光片 144分別為光接收器146所接收。 取景光學裝置160具有一第一光反射面162與一第二 光反射面164，其中，第一光反射面162係位於透鏡12〇 MR之光線經由第一光反射面162反射至第二光反射面 164。再經由第二光反射面164之反射使光線平行於光軸a 的方向，以利使用者觀察待測區域MR之範圍。 為了符合量化色彩之呈現，三個光譜修正遽光片144 係配合國際照明委員會所定義之XYZ三刺激值，用以使其 對應之光接收器146的光譜響應函數等效於國際照明委員 會所定義之三刺激值函數。藉以使三傭光接收器146所輸 同位置所放射的光線能夠進入光學感測系統1〇〇而為光接 收器146所接收的放射角並不相同。舉例來說，位置pi 放射之光線所處為光接收器146所接收的放射角al，係偏 向於顯示面板之法線方向的下方；然而，位置P2放射之光 線所此為光接收器146所接收的放射角a2,貝彳偏向於顯示 面板之法線方向的上方。對於較不具指向性之傳統陰極射 線顯示器，此放射角之差異固然不至影響測量結果。但是， 1290220 ，於具有明顯指向性之液晶顯示面板及軟性顯示器，此等 差異卻可能對於測量結果之準確性造成顯著影響。 其次，在第二圓之光學感測系統100之取景光學裝置 160中，第一光反射面162係設置於透鏡皿 第一光反射面162的存在顯然降低光接收裝置14〇所能接 收之總光量，而影響光學感測系統1〇〇之光量使用率。 一請參照第三圖所示，制一典型光學感測系統2〇〇< 示意圖，此光學感測系統200係揭示於我國專利第535〇〇4 一光分歧裝置230與一光接收裝置24〇。此光分歧裝置23〇 230a係位於透鏡220之聚焦平面，以接收來自透鏡之光 線。而三個出光面230b則是分別對準光接收裝置240之三 個光譜修正濾光片244，以提供光線至光接收器246。此 外，如第四圖所示，此光分歧裝置23〇係由光纖束構戍。 由入光面230a視之，此光纖束可區分為六等份 A4 ,光纖束係延伸至同一個出光面23〇b。 值得注意的是，此光分歧裝置230之入光面230a與透 鏡220構成一迫心光學系統（telecentric optical system)。而使待測區域MR不同位置所能投射至此入光面 230a之光線的放射角b大致相同。西此，前述光學感測系 統100所面臨待測區域MR放射角不一致的問題，並不會出 1於此光學感測系統200中。 然而，如第四圖所示，由於光分歧裝置230係由光纖 束所構成’各個圓形之光纖間必然有無法用以傳遞光線之 空隙g在。又，由光纖300之截面觀之，如第四込圖所示， 光纖300可區分為纖心（core) 310、纖殼(clad) 320與 外緣之彼覆層330。其中，用以傳導光線之纖心31〇所佔 之面積’通常僅及於光纖300截面積之四分之一。基於此， 經由透鏡220投射至入光面230a的光線中，僅有不到四分 之一的光量可以投射至光接收器246，而嚴重影響此光學 感測系統200之光量使用率。 其次，由於光分歧裝置230必須將數量龐大的光纖緊 禮、的聚集成束’其製作不易且成本昂貴。若是減少光纖之 數量’固然可以降低製作成本，但卻會增加各個光纖間的 空隙g，而導致光量使用率的下降。 爰是，在測量之準確性的前提下，如何有效兼顧光量 使用率以及製作成本，以面對低亮度量測之需求,已成為 當前之重要課題。 【發明内容 測區域投射至光學感測系統之光線的放射角不一致之問 通’以解決液晶顯不面板具有指向性而不利於測量的困難。 本發明之另一目的係提供一種色彩分析儀，可以有效 利用進入光學感測系統之光照，以解決低光量量測的困難。 本發明提供一色彩分析儀，其具有一光學感測系統， 對準至顯示面板上之待測區域，用以擷取待測區域所放射 之光線。此光學感測系統包括一聚光裝置、一光勻化裝置 與一光接收裝置。其中，聚光裝置係用以使此待測區域所 1290220 發出之特定光束會聚於其後方之一聚焦平面。光勻化裝置 係位於此聚焦平面，用以使會聚於聚焦平面之光線擴散混 合’並在一第一預設角之範圍内均勻向後投射。光接收裝 置係位於光勻化裝置之後方’甩以接受由光勻化裝置向^ 投射之光線。 此聚光裝置包括一透鏡與一光圈（aperture)。其中， 透鏡係用以使待測區域所發出之特定光束會聚於透^後方 之聚焦平面。光圈係位於此透鏡之後方且位於聚焦平面。 卜 並且’此光圈具有一孔徑光欄。藉此，顧示面板之待測區 域所放射之光線中，放射角小於一第二預設角之光線，始 能穿過孔徑光攔而成像於聚焦平面。 在本發明之一實施例中，此光勻化裝置係一全像式擴 散片（holographic diffuser)。 在本發明之另一實施例中，此光學感測系統更具有一 2對待測區域進行照明^ 所附圖式得到進一步的瞭解 第五圖係本發明三刺激值（three stimulus)型色彩 分析儀一較佳實施例之方塊示意圖。此色彩分析儀具有一 光學感測系統400與一信號處理主體5〇〇。此光學感測系 統400係對準顯示面板上之待測區域做，以擷取來自待測 ϋ域MR之光線並將其轉換為電訊號。這些電訊號再透過電 各傳輸至健處理主體5⑻之進行演算,以對顯示面板之 1290220 光學與色彩特性進行測量與分析。 第五A圖係放大顯示第五圖中之光學感測系統4〇〇。 如圖中所示，此光學感測系統400具有一聚光裝置420、 一光勻化裝置430與一光接收裝置440。其中，聚光裝置 420係用以使此待測區域所發出之特定光束會聚於其後方 之一聚焦平面FS1。光勻化裝置430係位於此聚焦平面 FS1，用以使會聚於聚焦平面FS1之光線擴散混合，並在一 第一預設角X之範圍内均勻向後投射。光接收裝置440係 | 位於光勻化裝置430之後方，用以接受由光句化裝置430 向後投射之光線。 / . 此聚光裝置420包括一第一透鏡422與一光 (aperture) 424。其中，第一透鏡422係用以使待測區域 MR所發出之特定光束會聚於其後方之聚焦平面FS1。光圈 424係位於第一透鏡422後方之聚焦平面FS1並對準第一 透鏡422之光軸A1。此光圈424之孔徑光欄（aperture stop， ^ 之光線。 值得注意的是，前述聚光裝置420係構成一遠心光學 系統（telecentric optical system)，而使顯示面板之待 測區域MR所放射之光線中，放射角小於第二預設角y之光 線，始能穿過孔徑光欄AS而會聚於聚焦平面FS1並進入光1290220 IX. Description of the invention: [Technical field of invention] A color analyzer, in particular, an optical sensing system capable of measuring the optical and color characteristics of a flat panel display, and a color analyzer having the optical sensing system . [Prior Art] A variety of colors, including the Violet and Sustaining Committee (International C〇mmissi〇n CIE), in 1931, the human eye experiment was used to formulate a tristimulus value χγζ to express the color values of each color, thereby quantifying the colors. Color-related devices, such as digital cameras, displays, and printers. Figure. The color analyzer 1 has a detector 10 and a signal processing main sensing system that receives light from the area to be tested on the display panel 2 and converts the received light into an electrical signal. These electrical signals are then transmitted through the second motor 30 to the signal processing body 20 for processing to analyze the optical and color characteristics of the display panel 2. Please refer to the second figure for a typical optical sensing system. The optical sensing system 100 has a lens 12, a light receiving device 140 and a viewing optics 160. The light receiving split (10) has a diffuser 142, three spectral correction filters 144 and three side-by-side 1290220 light receivers 146. The diffuser 142 is located on the focusing plane behind the lens 120. The spectrally modified light-passing sheet 144 is located behind the diffusion sheet 142. The three photoreceivers 146 are located behind the corresponding spectrally modified calenders 144, respectively. The light emitted by the region to be tested MR is imaged by the lens 12 to the diffusion sheet 142 via the lens 12, and then received by the optical receiver 146 via the spectral correction filter 144. The finder optical device 160 has a first light reflecting surface 162 and a second light reflecting surface 164, wherein the light of the first light reflecting surface 162 located at the lens 12 〇MR is reflected by the first light reflecting surface 162 to the second light reflecting surface. Face 164. Further, the reflection of the second light reflecting surface 164 causes the light to be parallel to the direction of the optical axis a, so that the user can observe the range of the region MR to be tested. In order to conform to the representation of the quantized color, the three spectrally modified calenders 144 are matched to the XYZ tristimulus values defined by the International Commission on Illumination to make the spectral response function of the corresponding optical receiver 146 equivalent to that defined by the International Commission on Illumination. The third stimulus value function. Thereby, the light emitted by the three-servo light receiver 146 at the same position can enter the optical sensing system 1 and the radiation angle received by the optical receiver 146 is not the same. For example, the light emitted by the position pi is at a radiation angle a1 received by the light receiver 146, which is biased downward in the normal direction of the display panel; however, the light emitted by the position P2 is the light receiver 146. The received radiation angle a2 is biased above the normal direction of the display panel. For conventional cathode ray displays that are less directional, this difference in radiation angle does not affect the measurement. However, 1290220, in the case of liquid crystal display panels and soft displays with obvious directivity, these differences may have a significant impact on the accuracy of the measurement results. Secondly, in the finder optical device 160 of the second optical sensing system 100, the presence of the first light reflecting surface 162 disposed on the first light reflecting surface 162 of the lens dish obviously reduces the total amount of light receiving device 14 can receive. The amount of light affects the amount of light used by the optical sensing system. Please refer to the third figure for a typical optical sensing system. The optical sensing system 200 is disclosed in the Chinese Patent No. 535〇〇4, a light diverging device 230 and a light receiving device 24. Hey. The light diverging means 23 〇 230a is located at the focal plane of the lens 220 to receive light from the lens. The three light exiting surfaces 230b are respectively aligned with the three spectral correction filters 244 of the light receiving device 240 to provide light to the light receiver 246. Further, as shown in the fourth figure, the light diverging means 23 is configured by a bundle of optical fibers. From the light-incident surface 230a, the bundle can be divided into six equal parts A4, and the fiber bundle extends to the same light-emitting surface 23〇b. It should be noted that the light incident surface 230a of the light diverging device 230 and the lens 220 constitute a telecentric optical system. The radiation angle b of the light that can be projected to the light incident surface 230a at different positions of the region to be tested MR is substantially the same. In this case, the problem that the optical sensing system 100 faces the MR angle of the region to be tested is inconsistent, and will not appear in the optical sensing system 200. However, as shown in the fourth figure, since the optical branching means 230 is constituted by a bundle of optical fibers, there must be a gap g between the respective circular optical fibers which cannot be used to transmit light. Further, as viewed from the cross section of the optical fiber 300, as shown in the fourth diagram, the optical fiber 300 can be divided into a core 310, a clad 320, and a peripheral layer 330 of the outer edge. The area occupied by the core 31 传导 for conducting light is generally only one quarter of the cross-sectional area of the optical fiber 300. Based on this, less than a quarter of the amount of light projected onto the light incident surface 230a via the lens 220 can be projected onto the light receiver 246, severely affecting the light usage of the optical sensing system 200. Secondly, since the light diverging device 230 must assemble a large number of optical fibers, it is difficult to manufacture and expensive. If the number of optical fibers is reduced, the manufacturing cost can be reduced, but the gap g between the individual fibers is increased, resulting in a decrease in the amount of light used. Therefore, under the premise of accurate measurement, how to effectively balance the light usage rate and production cost to meet the demand of low-intensity measurement has become an important issue at present. SUMMARY OF THE INVENTION The problem of inconsistent radiation angles of light rays projected into an optical sensing system is to solve the problem that the liquid crystal display panel has directivity and is not advantageous for measurement. Another object of the present invention is to provide a color analyzer that can effectively utilize the illumination entering the optical sensing system to address the difficulty of low light measurement. The present invention provides a color analyzer having an optical sensing system that is aligned to a region to be tested on the display panel for capturing light emitted by the area to be tested. The optical sensing system includes a light collecting device, a light homogenizing device and a light receiving device. Wherein, the concentrating device is configured to converge the specific light beam emitted by the region 1290220 to a focal plane behind it. The light homogenizing means is located at the focal plane for diffusing the light condensed on the focal plane and uniformly projecting backwards within a first predetermined angle. The light receiving means is located behind the light homogenizing means to receive light projected by the light homogenizing means. The concentrating device includes a lens and an aperture. The lens is used to converge the specific light beam emitted by the area to be measured on the focal plane behind the lens. The aperture is located behind the lens and is in the focus plane. Bu and 'this aperture has an aperture diaphragm. Thereby, in the light emitted by the area to be tested of the panel, the light having a radiation angle smaller than a second predetermined angle can be imaged through the aperture stop to form a focus plane. In one embodiment of the invention, the light homogenizing device is a holographic diffuser. In another embodiment of the present invention, the optical sensing system further has a lighting area to be measured. The drawing is further understood. The fifth drawing is a three-stimulus color analyzer of the present invention. A block diagram of a preferred embodiment. The color analyzer has an optical sensing system 400 and a signal processing body 5A. The optical sensing system 400 is aligned with the area to be tested on the display panel to capture the light from the MR field to be measured and convert it into an electrical signal. These electrical signals are then transmitted to the processing body 5 (8) for calculation and analysis of the optical and color characteristics of the 1290220 display panel. The fifth A diagram is an enlarged view of the optical sensing system 4A in the fifth figure. As shown in the figure, the optical sensing system 400 has a light collecting device 420, a light homogenizing device 430 and a light receiving device 440. The concentrating device 420 is configured to converge the specific light beam emitted by the area to be tested on one of the focusing planes FS1 behind it. The light homogenizing means 430 is located on the focusing plane FS1 for diffusing and mixing the light concentrated on the focusing plane FS1 and uniformly projecting backward in a range of a predetermined angle X. The light receiving device 440 is located behind the light homogenizing device 430 for receiving the light projected backward by the syphonic device 430. The concentrating device 420 includes a first lens 422 and an aperture 424. The first lens 422 is configured to converge the specific light beam emitted by the region to be tested MR on the focal plane FS1 behind it. The aperture 424 is located on the focus plane FS1 behind the first lens 422 and is aligned with the optical axis A1 of the first lens 422. The aperture stop of the aperture 424 (the aperture of the aperture stop ^. It is noted that the aforementioned concentrating device 420 constitutes a telecentric optical system, and the light emitted by the MR of the display panel is MR The light having a radiation angle smaller than the second predetermined angle y can pass through the aperture stop AS and converge on the focus plane FS1 and enter the light.
勻化裝置430。換言之，此聚光裝置420係使待測區域MR . .. ..... … . . . . . .， . . .... .... . ... . . . . . 之不同位置所投射進入光勻化裝置之光線，具有相同之放 射角y。也因此，本發明之光學感測系統400可以適用於 具有明顯指向性之液晶顯示面板的色彩分析。 11 1290220 此光接收裝置440具有一第二透鏡442、三個並排之 光接受器446與三個光譜修正濾光月444。第二透鏡442 係位於光勻化裝置430之後方並與光勻化裝置43Q距離一 倍此第二透鏡442之焦距f2的距離。也就是說，光勻化裝 置430係位於第二透鏡442前方之聚焦平面上。光勻化裝 置430向後投射之光線經由第二透鏡442轉換為平行光投 射至光譜修正濾光片444與光接受器446。值得注意的是， 每一個光接受器446之前方係分別配置有一光譜修正濾光 值XYZ，以決定光接受器446所能接收之光譜範圍。 為了使投射至各個光譜修正濾光片444之光量盡量相 同，由第二透鏡442之光軸八2方向觀之，如第五3獨所示， 三個並排之光接受器446與其相對應之光譜修正濾光片 444，係以第二透鏡442之光軸A2為對稱中心排列广^ (holographicdif fuser )’以使會聚於聚焦平面之光線充 件之特性’使擴散後之光量得以在空間分布上，得到均勻 化之效果，也因此元件光接受面之直徑較小於第二透鏡 442的直徑’可將此元件視為將其接收面所接收到的光 量，重新以一接近理想點光源的方式向後擴散，而使均勻 化的效果更佳。又，為了使光勻化裝置43〇向後投射之光 線儘量為光接受器446所接收。此第一預設角又之角度必 須配合第二透鏡442之尺寸與其焦距距離f2而調整，此 外，此第一預設角X之角度亦可能因光勻化裝置所應用之 12 1290220 手段f同而有所變化。惟就本發明之較佳實施例而言，第 一預設角X係大於10度，且最好是介於15度至25度。 值付注意的是，前述全像式擴散片僅是本發明光勻化 兀件之一較佳實施例。本發明之光勻化裝置亦可使用光 識、巧束、光導管、或材質、形狀、構造袓 元件實現。_來說，可減雜賴照全像式擴散 片外觀及直徑大小作類似之棑列，以近似於全像式擴散片 之设计來達到集中光量並且使光線以特定角度向後放射之 目的;而光導管除可採用與上述之設計方式外，亦可使用 一漏斗狀光導管，其入光面之面積係對應於前述全像式擴 散片，而出光面之面積係對應於第二透鏡442 1 清參照第六圖所示，係本發明光學感測系統第二較佳 實施例之示意圖。相較第五A圖之實施例，使用三個光 谱修正渡光片444與三個光偵測器446以接收對應至χγζ 三刺激值之光訊號，本實施例係使用轉輪47〇並搭配光二 極體、線型及面型電荷耦元件(CCD)等相關光偵測器 474。如圖中所示，此轉輪47〇上係配置有對應至χγζ三刺 激值之光譜修正濾光片472。透過轉輪470轉動，即可使 光债測器474依序記錄對應至灯2三刺激值之光譜。值得 注意的是，此轉輪470除了可以設置於第二透鏡442之前 方外，亦可設置於第二透鏡442之後方。 請參照第七圖所示，係本發明光學感測系統第三較佳 實施例之示意圖。本實施例係使用分光元件482以取代光 譜修正濾光片472。分光元件482，如光柵等，可將入射光 依照波長區分為不同出射角度之出射光，再搭配適當之光 13 1290220 射光，即可取得對應至XYZ三刺激 偵測器484偵測這些出 值之光譜。 亦即用者確認光學感測系統卿之偵測位置， 系统之第之姻區域MR之所在，在本發日月光學感測 :昭明中’如第八圖所心 德職置450係可移動至第一透鏡442 隹、目响二“、、、’面FS1並對準第一透鏡之光軸A1方向，以對 待測區域MR進行照明。就—較佳實施例而言，當此照明裝 置^對待測區域搬進行照明時，來自待測區則 線係，到遮蔽而無法進人光勻化裝置雛。此^ 圖^’照明裝置450與光圈424係於一^ 透過切換裝置蝴抑齡作，_雜對待顺細 mmm ^ MR ^ >ib^ £ 430。又就此照明裝置之另一較佳實施例而言，如第八a 圖所示，此光圈424與照明裝置450，可以分開設置。其 + ? 1 424 ^ J] , CM ^^ £ 450, ftHomogenizer 430. In other words, the concentrating device 420 is different for the area to be tested MR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The light projected into the light homogenizing device at the position has the same radiation angle y. Therefore, the optical sensing system 400 of the present invention can be applied to color analysis of a liquid crystal display panel having significant directivity. 11 1290220 The light receiving device 440 has a second lens 442, three side-by-side light receptors 446 and three spectrally modified filter channels 444. The second lens 442 is located behind the light homogenizing device 430 and is twice as long as the focal length f2 of the second lens 442 from the light homogenizing device 43Q. That is, the light homogenizing device 430 is located on the focal plane in front of the second lens 442. The light projected backward by the light homogenizing device 430 is converted into parallel light by the second lens 442 and projected to the spectral correction filter 444 and the light receiver 446. It should be noted that each of the optical receivers 446 is respectively provided with a spectral correction filter value XYZ to determine the spectral range that the optical receiver 446 can receive. In order to make the amount of light projected to each of the spectral correction filters 444 as equal as possible, the optical axis of the second lens 442 is viewed in the direction of the octave 2, as shown in the fifth 3, the three side-by-side optical receivers 446 are corresponding thereto. The spectral correction filter 444 is arranged such that the optical axis A2 of the second lens 442 is symmetrically arranged to holographically define the characteristics of the light concentrating on the focusing plane to spatially distribute the diffused light. In the above, the effect of homogenization is obtained, and therefore the diameter of the light-receiving surface of the element is smaller than the diameter of the second lens 442. This element can be regarded as the amount of light received by its receiving surface, and is again brought closer to the ideal point source. The way to spread backwards, the effect of homogenization is better. Further, in order to cause the light homogenizing device 43 to project backward, the light is received by the light receiver 446 as much as possible. The angle of the first predetermined angle must be adjusted according to the size of the second lens 442 and the focal length f2 thereof. In addition, the angle of the first preset angle X may also be the same as the 12 1290220 means applied by the light homogenizing device. And there have been changes. In the preferred embodiment of the invention, however, the first predetermined angle X is greater than 10 degrees, and preferably between 15 and 25 degrees. It is to be noted that the above-described omnidirectional diffusion sheet is only one preferred embodiment of the light homogenizing element of the present invention. The light homogenizing device of the present invention can also be realized by using a light, a beam, a light pipe, or a material, a shape, or a structure. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In addition to the above design, a funnel-shaped light pipe may be used, the area of the light incident surface corresponding to the holographic diffuser, and the area of the light exit surface corresponding to the second lens 442 1 Figure 6 is a schematic view showing a second preferred embodiment of the optical sensing system of the present invention. Compared with the embodiment of FIG. 5A, three spectral correction 440 and three photodetectors 446 are used to receive the optical signal corresponding to the χγζ tristimulus value. In this embodiment, the reel 47〇 is used and matched. A related photodetector 474 such as a photodiode, a line and a surface charge coupled device (CCD). As shown in the figure, the reel 47 is provided with a spectral correction filter 472 corresponding to the χγζ three stimuli. By rotating the wheel 470, the optical debt detector 474 sequentially records the spectrum corresponding to the three stimulus values of the lamp 2. It should be noted that the runner 470 may be disposed behind the second lens 442 in addition to the second lens 442. Referring to Figure 7, a schematic view of a third preferred embodiment of the optical sensing system of the present invention is shown. This embodiment uses a spectral element 482 instead of the spectral correction filter 472. The light-splitting element 482, such as a grating, can separate the incident light into different outgoing angles according to the wavelength, and then combine the appropriate light 13 1290220 to obtain the corresponding XYZ tristimulus detector 484 to detect these values. spectrum. Also, the user confirms the detection position of the optical sensing system, the location of the system's first marriage area MR, and the optical sensing in the present day: Zhaomingzhong's as shown in the eighth figure Illuminating the area to be tested MR to the first lens 442, the second ",," surface FS1 and aligned with the optical axis A1 of the first lens. In the preferred embodiment, when the illumination device ^When the area to be measured is illuminated, the line from the area to be tested is shielded and cannot enter the light homogenization device. This ^^^'s illumination device 450 and aperture 424 are connected to each other. For example, in another preferred embodiment of the illumination device, as shown in FIG. 8A, the aperture 424 and the illumination device 450 can be separated. Settings. Its + ? 1 424 ^ J] , CM ^^ £ 450, ft
以決定是否要對待測區域MR進行照明。 相較於第二圖之傳統光學感測系統，本發明透過遠心 光學系統之使用，使待測區域MR不同位置被光學感測系統 100所接收之光線具有相同之放射角，以避免液晶顯示面 板之措向性對測量結果之準確性與再現性造成不利之影 響。同時，本發明使用可移動之照明裝置450取代第二圖 之取景光學裝置160，以提高光接收器446所能接收之總 光量。藉此，本發明光學感測系統之光量使用率可以得到 1290220 相較於第三圖之傳統光學感測系統200，本發明透過 光勻化裝置430之使用，而不需使用高製作成本之光分歧 裝置230，因而可以大幅降低之製作成本。其次，雖然光 線在光分歧裝置230之光纖内係以全反射之方式提供至光 接收器246，但是，僅有不到四分之一的光線可以進入光 纖之纖心（請同時參照第四與四A调）。相較之下，在本發 明之光學感測系統400中，穿過光圈424之光線係充分提 供至全像式擴散片，再提供至光接收器446，因而可以提 ^ 供較佳之光量使用率It is determined whether or not the MR to be measured is to be illuminated. Compared with the conventional optical sensing system of the second figure, the present invention uses the telecentric optical system to make the light received by the optical sensing system 100 at different positions in the region to be tested MR have the same radiation angle to avoid the liquid crystal display panel. The directionality adversely affects the accuracy and reproducibility of the measurement results. At the same time, the present invention replaces the viewing optics 160 of the second image with a movable illumination device 450 to increase the total amount of light that the optical receiver 446 can receive. Thereby, the light quantity utilization rate of the optical sensing system of the present invention can be obtained as 1290220. Compared with the conventional optical sensing system 200 of the third figure, the present invention can be used by the light homogenizing device 430 without using high-cost light. The diverging device 230 can greatly reduce the manufacturing cost. Secondly, although the light is supplied to the light receiver 246 in the form of total reflection in the optical fiber of the light diverging device 230, less than a quarter of the light can enter the core of the optical fiber (please refer to the fourth and Four A tone). In contrast, in the optical sensing system 400 of the present invention, the light passing through the aperture 424 is sufficiently supplied to the holographic diffuser and then supplied to the optical receiver 446, thereby providing a better light usage rate.
I 以上所述係利用較佳實施例詳鈿說明本發明，而非限 而作些微的改變及調整，仍將不失本發明之要義所在，亦 不脫離本發明之精神和範圍。 【圖式簡單說明】 ^ 圖係一典型色彩分析儀之示意圖 ：-； 第四圖係第三圖中之光分歧裝置之示意獨r 第四A圖係一典型光纖之截面示意圖、 第五圖係本發明三刺激值(three stimulus)型色 分析儀一較佳實施例之示意圖。 圖。 第五B係第五A圖中，光接收器之配置一較佳實施例 15 之示意圖。 i第六係第本發明光學感測系統第二較佳實施例之示意 第七係第本發明光學感測系統第三較佳實施例之示意 圖0 第八圖係本發明光學感測系統第四較佳實施例之示意 圖。 第八A圖係第八圖之照明裝置另一較佳實施例之示意 圖。 【主要元件符號說明】 色彩分析儀 l· 偵測器10 信號處理主體20 光學感測系統100 透鏡120 光接收裝置140 ·. - -.. .... ... . 取景光學裝置 光接收裝置140 擴散片 142 夂 _ ^ ^ ^The above description of the present invention is intended to be illustrative, and not restrictive of the scope of the invention. [Simple diagram of the diagram] ^ Diagram of a typical color analyzer: -; The fourth diagram is the schematic diagram of the light divergence device in the third diagram. The fourth diagram is a schematic diagram of a typical fiber, and the fifth diagram. A schematic diagram of a preferred embodiment of a three stimulus color analyzer of the present invention. Figure. Fig. 5B is a schematic view showing a configuration of a light receiver in a fifth embodiment. The sixth embodiment of the optical sensing system of the present invention is a schematic diagram of a second preferred embodiment of the optical sensing system of the present invention. The eighth embodiment is the fourth optical sensing system of the present invention. A schematic of a preferred embodiment. Figure 8A is a schematic view of another preferred embodiment of the illumination device of the eighth embodiment. [Description of main component symbols] Color analyzer l·Detector 10 Signal processing main body 20 Optical sensing system 100 Lens 120 Light receiving device 140 ·. - -.. .... .... Viewing optical device light receiving device 140 diffusion sheet 142 夂 _ ^ ^ ^
光譜修正濾光片144 光接收器146 待測區域MR 1290220 第一光反射面162 第二光反射面164 放射角al，a2，b 光學感測系統200 透鏡220 光分歧裝置230 入光面230a 出光面230b 光接收裝置24〇 光譜修正濾光片244 光接收器246 光纖300 纖心310 纖殼320 彼覆層330 光學感測系統400 信號處理主體500 聚光裝置420 光勻化裝置430 光接收裝置440 第一透鏡422 1290220 光圈424 第二透鏡442 光譜修正濾光片444 光接受器446 轉輪470 光譜修正濾光片472 光偵測器474' 分光元件482 光偵測器484 照明裝置450, 450’ 切換裝置460Spectral correction filter 144 Optical receiver 146 Area to be tested MR 1290220 First light reflecting surface 162 Second light reflecting surface 164 Radiation angle a1, a2, b Optical sensing system 200 Lens 220 Light diverging device 230 Light incident surface 230a Light output Surface 230b Light receiving device 24 〇 Spectral correction filter 244 Optical receiver 246 Optical fiber 300 Core 310 Shell 320 Sub-layer 330 Optical sensing system 400 Signal processing body 500 Concentrating device 420 Light homogenizing device 430 Light receiving device 440 first lens 422 1290220 aperture 424 second lens 442 spectral correction filter 444 light receiver 446 wheel 470 spectral correction filter 472 light detector 474' beam splitting element 482 light detector 484 lighting device 450, 450 'Switching device 460