M379758 五、新型說明： 【新型所屬之技術領域】 本創作有關於一種鏡頭成像品質之檢測裝置，不僅可 快速檢測多數個鏡頭，並藉由更換不同的測試圖案，以對 於鏡頭進行各種光學特性測試。 ' 【先前技術】 - 廠商為了確保製造出的鏡頭係符合光學上的規範，在 #出貨前會對於鏡頭進行一連串的性能測試。 目前業界的鏡頭測試方式主要分成正投影測試及逆 投影測試兩種方式。再者’ 般鏡頭之兩端分別為物端及 像端，物端為設置欲攝影或照相之標的物之端，而像端則 是攝影機或照相機記錄成像晝面之端。 正投影測試方式係將一固定的測試圖案置放於待測 鏡頭之物端，在透過位於像端的攝影機擷取該測試圖案之 影像，並由擷取出之影像進一步判斷待測鏡頭的性能。 胃 另，逆投影測試方式則是將測試圖案製作成一遮罩 (mask)，利用平行光管（collimator)照射遮罩圖案，並經 由待測鏡頭的像端投射至牆壁或布幕上，然後觀察牆壁或 布幕上所成像的成像圖案品質，藉以分析待測鏡頭之性 能。 採用正投影測試方式，其優點是正投影裝置的架構體 積與一般的影像處理裝置大致相同，然，缺點是測試圖案 往往是固定形狀，無法任意更換圖案，且檢測鏡頭性能時 3 M379758 常常受限於攝影機或照相機之解析度。 又，採用逆投影測試方式，其優點是測試圖案透過遠 距離的投影後，可以清楚的分辨成像品質，不會受限於攝 影機或照相機的解析度限制，但，缺點是逆投影裝置的架 構體積較為魔大。 此外，不論採用正或逆投影測試方式，傳統鏡頭測試 架構上大多只用一台攝影機或照相機，一次只用以測試一 個鏡頭，當然，有時也會多台攝影機或照相機同時進行檢 測，但，主體上仍採用一對一測試方式，透過一台攝影機 或照相機對應一個鏡頭進行檢測，而令成本提高許多。 【新型内容】 本創作之主要目的，在於提供一種鏡頭成像品質之檢 測裝置，其裝置可用以多數個鏡頭或多種尺寸類型鏡頭的 檢測功能，有效提升鏡頭性能測試上的效率及彈性。 本創作之次要目的，在於提供一種鏡頭成像品質之檢 測裝置，在進行鏡頭之檢測程序時，可更換不同的測試圖 案，以對於鏡頭進行各種光學特性之測試。 本創作之又一目的，在於提供一種鏡頭成像品質之檢 測裝置，在移動平台上設置多數個影像擷取器，可同時檢 測多數個鏡頭，以提升檢測數量上的時效性。 本創作之又一目的，在於提供一種鏡頭成像品質之檢 測裝置，提供一具有X、Y、Z三轴調整之移動平台，用以 調整影像擷取器與待測鏡頭間的相對位置，以令影像擷取 M379758 器能夠調整至較佳的位置擷取待測鏡頭聚焦的成像圖案。 為達成上述目的，本創作提供一種鏡頭成像品質之檢 測裝置，其結構包括有：一圖形顯示器，用以顯示至少一 測試圖案；一鏡頭固定平台，其上擺置有複數個待測鏡 頭，圖形顯示器位於待測鏡頭上方；及一移動平台，其上 設置有至少一影像擷取器，移動平台位於待測鏡頭下方， -用以調整影像擷取器與待測鏡頭間的相對位置，影像擷取 .器經由待測鏡頭擷取圖形顯示器上所顯示之測試圖案，以 •取得待測鏡頭的成像圖案，並藉由分析成像圖案以判斷待 測鏡頭之品質。 【實施方式】 請參閱第1圖及第2圖，為本創作鏡頭成像品質之檢 測裝置一較佳實施例之結構立體圖及局部結構立體圖。如 第1圖所示，本創作檢測裝置100主要包括有一圖形顯示 _器10、一鏡頭固定平台20及一移動平台30。 ® 其中，鏡頭固定平台20上擺置有複數個待測鏡頭5卜 圖形顯示器10位於待測鏡頭51上方，用以顯示至少一測 試圖案11，該測試圖案11作為測試待測鏡頭51光學特性 的圖案，而移動平台30位於待測鏡頭51下方並設置有至 少一影像擷取器37，移動平台30用以調整影像擷取器37 與待測鏡頭51間的相對位置，以使得影像擷取器37能夠 移動至欲測試之待測鏡頭51的下方處，並經由待測鏡頭 51擷取圖形顯示器10上所顯示之測試圖案11，以取得待 5 M379758 測鏡頭51聚焦的成像圖案，進而分析成像圖案，以判斷 待測鏡頭51之光學特性是否符合使用上的規定。 本創作所述之圖形顯示器10為一電腦螢幕、一監視 器螢幕、一 LCD顯示器、一 LED顯示器、一背投影螢幕或 一圖形變換裝置，而影像擷取器37為一攝影機、一照相 機或一具有影像感測功能之裝置，其内部包括有一係由 CCD或CMOS所組成之感光元件，感光元件可為一線型或一 面型規格。 又，本創作檢測裝置100係可透過一電腦或一微處理 器（未顯示）命令影像擷取器37進行取像，則圖形顯示器 10上所顯示之測試圖案11會經由待測鏡頭51成像在影像 擷取器37上，並由電腦分析影像擷取器37所擷取的成像 圖案，以達到分析待測鏡頭51光學特性之目的。 此外，檢測裝置100在進行鏡頭之檢測程序時，亦可 透過電腦或微處理器（未顯示）控制圖形顯示器10更換所 顯示之測試圖案11，以利用不同的測試圖案11對於待測 鏡頭51進行各種光學特性測試（例如：有效焦長、銳利度、 對比度、景深、光學傳遞函數（MTF )、扭曲、亮度分布或 色差）。 接續，如第2圖所示，本創作的各待測鏡頭51 >先 設置於一托盤50上，在透過托盤50擺置到鏡頭固定平台 20之一鏡頭測試區21中。 承上，如第3(A)圖及第3(B)圖所示，托盤50包 括有複數個置放槽孔501，各待測鏡頭51將排列設置於置 M379758 放槽孔501中，再者，本實施例之待測鏡頭51係可為一 般鏡片。當然，本創作另一實施例中，待測鏡頭51也可 ，選擇為相機鏡頭，如第4(A)圖及第4(B)圖所示，或選 擇為晶圓，如第5(A)圖及第5(B)圖所示。藉此，本創 作檢測裝置100提供多種尺寸類型鏡頭的檢測功能，增加 鏡頭測試上的彈性。 請參閱第6圖，為本創作移動平台一較佳實施例之結 -構立體圖，並同時配合參閱第1圖。本實施例之移動平台 % 30主要用以調整影像擷取器37與待測鏡頭51間的相對位 置，其包括有一第一移動單元31、一第二移動單元33及 一第三移動單元35。 其中，第一移動單元31設置有一影像擷取器37，用 以Y軸方向的調整，以調整影像擷取器37之橫向移動。 第二移動單元33上設置有該第一移動單元31，用以X軸 方向的調整，以調整影像擷取器37之縱向移動。第三移 動單元35上設置有該第一移動單元31及該第二移動單元 @ 33，用以Z軸方向的調整，以調整影像擷取器37仰俯度、 偏擺度或影像擷取器37與待測鏡頭51間的上下距離。 藉由，移動平台30提供之X、Y、Z三轴調整功能， 影像擷取器37能夠調整至較佳的位置擷取待測鏡頭51聚 焦的成像圖案，而後，影像擷取器37將以S路徑371之 方向持續移動掃描，並依序對於各待測鏡頭51--進行 成像圖案的擷取及分析，如此，即可在檢測裝置100上完 成多顆待測鏡頭51之檢測，以提升鏡頭性能測試上的效 7 M379758 率。 請參閱第7圖，為本創作移動平台又一實施例之結構 立體圖。如圖所示，本實施例移動平台301之結構雷同於 第6圖實施例之移動平台30,其差異點在於第6圖實施例 之移動平台30只承載單一數量之影像擷取器37，而本實 施例之移動平台301將進一步承載多數量之影像擷取器 37。 本實施例移動平台301包括有一第一固定單元32、一 第二移動單元33及第三移動單元35。其中，第一固定單 元32設置有複數個影像擷取器37。第二移動單元33上設 置有該第一固定單元32,用以X轴方向的調整，以調整影 像擷取器37之縱向移動。第三移動單元35上設置有該第 一固定單元32及該第二移動單元33，用以Z轴方向的調 整，以調整影像擷取器37仰俯度、偏擺度或影像擷取器 37與待測鏡頭51間的上下距離。 當移動平台301應用於檢測裝置100時，各影像擷取 器37係可藉由移動平台301移動調整至各欲測試之待測 鏡頭51下方，並同時調整待測鏡頭51之成像達到對焦， 而後，各影像擷取器37將以縱向（X軸）路徑372持續移動 掃描，一次可對於多顆待測鏡頭51進行成像圖案的擷取 及分析。藉此，本實施例藉由多數量之影像擷取器37之 設置，一次可同時檢測多顆數量之待測鏡頭51，以提升鏡 頭檢測數量上的時效性。 請參閱第8圖，為本創作鏡頭成像品質之檢測裝置一 較佳實施例之檢測流程圖。 頭51會設置於托盤5〇上， 定平台20之鏡頭測試區21 首先，如步驟S901，各待測鏡 在透過托盤50擺置到鏡頭固 中。 100會判斷影像擷取器 如步驟S903,本創作檢測裝置 37之數量。 若’判斷影像擷取q 7 A S θ , _ 态37為早一數ι，則直接進行 驟別05,影像擷取器37藓M379758 V. New description: [New technical field] This creation is about a lens imaging quality detection device, which can not only quickly detect a large number of lenses, but also test various optical characteristics of the lens by replacing different test patterns. . ' [Prior Art] - In order to ensure that the manufactured lens is optically compliant, the manufacturer will perform a series of performance tests on the lens before shipment. At present, the lens testing methods in the industry are mainly divided into two methods: front projection test and reverse projection test. Furthermore, the ends of the lens are the object end and the image end, the object end is the end of the object to be photographed or photographed, and the image end is the end of the camera or camera recording image. In the orthographic projection test method, a fixed test pattern is placed on the object end of the lens to be tested, and the image of the test pattern is captured by a camera located at the image end, and the performance of the lens to be tested is further determined by the image taken out. In the stomach, the back projection test method is to make the test pattern into a mask, irradiate the mask pattern with a collimator, and project it onto the wall or the screen through the image end of the lens to be tested, and then observe The quality of the imaged image imaged on the wall or screen to analyze the performance of the lens to be tested. The positive projection test method has the advantage that the architectural volume of the front projection device is substantially the same as that of a general image processing device. However, the disadvantage is that the test pattern is often a fixed shape, and the pattern cannot be arbitrarily changed, and the detection of the lens performance is often limited to 3 M379758. The resolution of the camera or camera. Moreover, the use of the back projection test method has the advantage that the test pattern can clearly distinguish the image quality after being projected through a long distance, and is not limited by the resolution limit of the camera or the camera, but the disadvantage is the architectural volume of the retro projection device. More magical. In addition, regardless of the forward or reverse projection test method, most of the traditional lens test architecture uses only one camera or camera, only one lens is tested at a time. Of course, sometimes multiple cameras or cameras are simultaneously detected. The main body still uses a one-to-one test method, which is detected by a camera or a camera corresponding to a lens, which increases the cost. [New content] The main purpose of this creation is to provide a detection device for lens imaging quality, which can be used to detect the efficiency and flexibility of the lens performance test by using the detection function of a plurality of lenses or a plurality of sizes of lenses. The second objective of this creation is to provide a lens imaging quality inspection device that can be used to test various optical characteristics of the lens when performing the lens detection procedure. Another object of the present invention is to provide a lens imaging quality detecting device, which is provided with a plurality of image capturing devices on a mobile platform, which can simultaneously detect a plurality of lenses to improve the timeliness of the number of detections. Another object of the present invention is to provide a lens imaging quality detecting device, which provides a mobile platform with X, Y and Z three-axis adjustments for adjusting the relative position between the image capturing device and the lens to be tested, so as to The image capture M379758 can be adjusted to a better position to capture the imaged image of the lens to be tested. In order to achieve the above object, the present invention provides a lens imaging quality detecting device, which comprises: a graphic display for displaying at least one test pattern; and a lens fixed platform on which a plurality of lenses to be tested are placed, the graphic The display is located above the lens to be tested; and a mobile platform is provided with at least one image capture device, the mobile platform is located under the lens to be tested, and is used to adjust the relative position between the image capture device and the lens to be tested. The device captures the test pattern displayed on the graphic display through the lens to be tested, obtains an imaging pattern of the lens to be tested, and determines the quality of the lens to be tested by analyzing the imaging pattern. [Embodiment] Referring to Figures 1 and 2, a perspective view and a partial structural perspective view of a preferred embodiment of the imaging device for imaging quality of the lens are shown. As shown in FIG. 1, the present creative detecting apparatus 100 mainly includes a graphic display device 10, a lens fixing platform 20, and a mobile platform 30. A plurality of test lenses 10 are disposed on the lens fixing platform 20, and the graphic display 10 is located above the lens 51 to be tested for displaying at least one test pattern 11 as an optical characteristic of the test lens 51 to be tested. a moving platform 30 is located under the lens 51 to be tested and is provided with at least one image capturing device 37 for adjusting the relative position between the image capturing device 37 and the lens 51 to be tested, so that the image capturing device 37 can move to the lower side of the to-be-tested lens 51 to be tested, and capture the test pattern 11 displayed on the graphic display 10 via the to-be-tested lens 51 to obtain an imaging pattern to be focused by the 5 M379758 measuring lens 51, and then analyze the imaging. A pattern is used to determine whether the optical characteristics of the lens 51 to be tested conform to the regulations on use. The graphic display 10 of the present invention is a computer screen, a monitor screen, an LCD display, an LED display, a rear projection screen or a graphic conversion device, and the image capturing device 37 is a camera, a camera or a camera. The device with image sensing function includes a photosensitive element composed of CCD or CMOS, and the photosensitive element can be of a line type or a side type. Moreover, the creative detecting device 100 can command the image capturing device 37 to perform image capturing through a computer or a microprocessor (not shown), and the test pattern 11 displayed on the graphic display 10 is imaged through the lens 51 to be tested. The image capturing device 37 is used to analyze the imaging pattern captured by the image capturing device 37 for the purpose of analyzing the optical characteristics of the lens 51 to be tested. In addition, the detecting device 100 can also control the graphic display 10 to replace the displayed test pattern 11 through a computer or a microprocessor (not shown) to perform the lens 11 to be tested with the different test patterns 11 . Various optical characteristics tests (eg, effective focal length, sharpness, contrast, depth of field, optical transfer function (MTF), distortion, brightness distribution, or chromatic aberration). In the continuation, as shown in FIG. 2, each of the to-be-tested lenses 51 > of the present invention is first disposed on a tray 50 and placed in the lens test area 21 of the lens fixing platform 20 through the transmission tray 50. As shown in FIG. 3(A) and FIG. 3(B), the tray 50 includes a plurality of slots 501, and the lenses 51 to be tested are arranged in the slot 501 of the M379758. The lens 51 to be tested in this embodiment may be a general lens. Of course, in another embodiment of the present creation, the lens 51 to be tested may also be selected as a camera lens, as shown in FIG. 4(A) and FIG. 4(B), or selected as a wafer, such as the fifth (A). ) and Figure 5(B). Thereby, the present invention is provided with the detection function of a plurality of size type lenses to increase the elasticity of the lens test. Please refer to FIG. 6 , which is a perspective view of a structure of a preferred embodiment of the mobile platform of the present invention, and is also referred to FIG. 1 . The mobile platform % 30 of the present embodiment is mainly used to adjust the relative position between the image capturing device 37 and the lens 51 to be tested, and includes a first moving unit 31, a second moving unit 33 and a third moving unit 35. The first moving unit 31 is provided with an image capturing device 37 for adjusting the lateral movement of the image picker 37 by adjusting in the Y-axis direction. The second moving unit 33 is provided with the first moving unit 31 for adjusting the X-axis direction to adjust the longitudinal movement of the image picker 37. The third moving unit 35 is provided with the first moving unit 31 and the second moving unit @33 for adjusting the Z-axis direction to adjust the tilting degree, the yaw degree or the image picker of the image picker 37. The upper and lower distance between 37 and the lens 51 to be tested. By the X, Y, and Z triaxial adjustment functions provided by the mobile platform 30, the image capturing device 37 can be adjusted to a preferred position to capture the imaging pattern focused by the lens 51 to be tested, and then the image capturing device 37 will The direction of the S path 371 is continuously moved and scanned, and the imaging pattern is captured and analyzed for each of the to-be-measured lenses 51 in sequence, so that the detection of the plurality of to-be-measured lenses 51 can be completed on the detecting device 100 to enhance The effect of the lens performance test on the 7 M379758 rate. Please refer to FIG. 7 , which is a perspective view of a structure of still another embodiment of the creative mobile platform. As shown in the figure, the structure of the mobile platform 301 of the embodiment is the same as that of the mobile platform 30 of the embodiment of FIG. 6 , and the difference is that the mobile platform 30 of the embodiment of FIG. 6 only carries a single number of image capture devices 37, and The mobile platform 301 of this embodiment will further carry a large number of image capturers 37. The mobile platform 301 of this embodiment includes a first fixing unit 32, a second moving unit 33, and a third moving unit 35. The first fixing unit 32 is provided with a plurality of image pickers 37. The first moving unit 32 is provided with the first fixing unit 32 for adjusting in the X-axis direction to adjust the longitudinal movement of the image picker 37. The first moving unit 32 and the second moving unit 33 are disposed on the third moving unit 35 for adjusting in the Z-axis direction to adjust the tilting degree, the yaw degree or the image picker 37 of the image picker 37. The upper and lower distances from the lens 51 to be tested. When the mobile platform 301 is applied to the detecting device 100, the image capturing device 37 can be adjusted to move under the lens 51 to be tested by the moving platform 301, and simultaneously adjust the imaging of the lens 51 to be in focus, and then Each image extractor 37 will continue to scan in a longitudinal (X-axis) path 372, and the imaging pattern can be captured and analyzed for a plurality of lenses 51 to be tested at a time. Therefore, in this embodiment, by setting a plurality of image pickers 37, a plurality of the plurality of shots to be tested 51 can be simultaneously detected at a time to improve the timeliness of the number of shots detected. Please refer to FIG. 8 , which is a flow chart of detecting a preferred embodiment of the imaging quality of the lens. The head 51 is disposed on the tray 5, and the lens test area 21 of the stage 20 is first. In step S901, each of the to-be-measured mirrors is placed in the lens tray 50 to be fixed to the lens. 100 will judge the image capture device as in step S903, the number of the creation detection devices 37. If it is judged that the image captures q 7 A S θ , and the _ state 37 is earlier than the first number ι, then the direct step 05 is performed, and the image capture device 37藓
稭由移動千台30調整至較佳的你 置乂對於待測鏡頭51進行對焦。 ν驟S907 ’在對焦後，影像操取器37經由待測鏡 擷取Bmn 1G上所顯示之—特定的測試圖案 例如：測試銳利度之圖案）’以取得待測鏡頭Μ聚隹 的成像圖案。 ’、、、 八如步驟S909,檢測裝i1〇〇透過一電腦或一微處理哭 【刀析影像擷取H 37所#|取之成像㈣，以分析待測鏡頭 特定的光學特性（例如··銳利度），並輸出 各待測鏡頭51的檢測結果。 再者，欲進行另—光學特性（例如：對比度）之測試， 吓進行步驟S906，：^去...... ^ 否者，結束整個檢測流程。 如步驟S906，洛:b,丨# 檢测裝置100可透過電腦控制圖形顯元 、 /、5式圖案11，以利用不同的測試圖案11詞 於待測鏡頭51進杆χ , Μ 赖丁另一光學特性的測試，並持續進行步 驟 S907 及 S909,吉5^ 畢抑，内± 息到欢測試的光學特性（例如：有效焦長 ^木、光學傳遞函 # + ^數⑼打）、扭曲、場曲、亮度分布、色 是或色澤）檢測完畢為止。 9 M379758 接續，承上步驟S903，假如檢測裝置100判斷影像指負 取器37為複數個，將進行步驟S904，各影像擷取器37透 過移動平台301分別移動調整至托盤50之四個角落之四 個待測鏡頭51之下方，檢測裝置100將分析影像擷取器 37與四個待測鏡頭51間的各個焦距。若四個焦距是一致 的’則代表托盤50係平整擺置於鏡頭固定平台20之鏡頭 測試區21中，係可進行後續步驟S905-S909。反之，四個 焦距未一致的，則代表托盤50未平整擺置於鏡頭固定平 台20之鏡頭測試區21中，需重新擺放托盤50或待測鏡 頭51直到平整為止，以避免後續進行步驟S905時，各影 像擷取器37無法同時對於多數量的待測鏡頭51全部順利 對焦。 又’本創作檢測裝置100係可對於待測鏡頭51進行 至少一光學特性的測試，以下將--進行介紹： (1).有效焦長（Effective Focus Length, E.F.L)測試 由於影像擷取器37(例如：攝影機或照相機）、待測鏡 頭51及圖形顯示器1〇間的相對位置是固定的，其相對距 離係可推測而知。此外，圖形顯示器1〇上所顯示的測試 圖案11之圖形尺寸為已知，則影像擷取器37所擷取的成 像圖案之圖形尺寸亦可從像素多寡得知。因此，可就得知 之相對距離及成像㈣之_形尺寸套人於光學公式中，即 可得到待測鏡頭51之有致焦長。 (2)銳利度（Sharpness)測試 M379758 銳利度最常用於判斷鏡頭是否對焦的依據，當鏡頭銳 利度值最高時，待測鏡頭51成像焦點就會落在影像擷取 器37的感光元件上，相對的待測鏡頭51成像焦點未落在 影像擷取器37的感光元件上，而使得影像擷取器37接收 到的成像圖案會有模糊的現象，也就是未對焦。 當圖形顯示器10顯示為一黑白的測試圖案11時，如 第9圖所示，影像擷取器37所擷取之成像圖案之正中央 -取一條横線，並令像素的位置為橫軸，灰階值為縱軸，即 %可得到一灰階值分佈圖，如第10圖。 假設待測鏡頭51是完美的，則所繪出的灰階值變化 會如第10(A)圖所示，圖案邊界地區灰階值之變化斜率接 近無窮大。但，一般符合需求規定的待測鏡頭51所繪出 的灰階值變化會如第10(B)圖所示，在圖案邊界地帶灰階 值之變化斜率會成連續變化情形。假若待測鏡頭51與影 像擷取器37間沒有對焦，或者待測鏡頭51本身的成像品 質不佳，則所繪出的灰階值變化會如第10(C)圖所示。 . 參考於第10圖，係可將相鄰的兩個像素的灰階值相 減並取絕對值，本創作即可檢測出待測鏡頭51的銳利度 值。 當然，本創作雖採用第9圖作為檢測待測鏡頭51銳 利度，然，只要測式圖案11中具有黑白對比特性之類型 圖案均可採用，如第11圖所示，其皆可達到檢測銳利度 的結果。 11 M379758 (3) 。景深（Focus Depth)測試 當待測鏡頭51與影像擷取器37間藉由移動平台 30/301調整呈對焦狀態’此時檢測裝置1〇〇的銳利度將會 疋最大值。由於鏡頭具有景深的特性，因此在待測鏡頭51 固定的情況下’前後移動影像擷取器37依然可以維持檢 測裝置100之銳利度為最大值。當銳利度急速下降，則代 表影像擷取器37已超過景深範圍，檢測裝置1〇〇漸呈離 焦狀態。在此，透過記錄移動平台3〇/3〇1的位置及比較 銳利度值的變化，影像擷取器37在一段固定範圍内仍可 對於待測鏡頭51保持對焦狀態，此固定範圍即為待測鏡 頭51之景深。 (4) .對比度（Contrast)測試 在做對比度測試時’必須預先知道測試圖案丨丨之X 值（圖案最亮的灰階值，例如：255)及Υ值（圖案最暗的灰 階值，例如：〇)，其對比值公式可為：（χ_γ)/(χ+γ)。影 像擷取器37經由待測鏡頭51擷取圖形顯示器10所顯示 之測試圖案11(如第9圖或第11圖所示），接著，分析影 像擷取器37所擷取之成像圖案的X值及γ值，並帶入於 公式（X-Y)/(X+t)中，即可求得待測鏡頭51的對比度，以 比較出成像圖案與測試圖案11間是否存在有對比度差異。 (5) .鏡頭光學傳遞函數（Modulation Transformation Function, MTF)測試 12 M379758 MTF是空間頻率的函數，應用在鏡頭上，則單位長度 裡一黑線一白線的反覆次數即「線/單位長度」，若影像擷 取器37經由待測鏡頭51擷取圖形顯示器10上之MTF測 試圖案11，如第12圖所示，而所擷取的成像圖案若能夠 分辨出的線條數越多，則代表待測鏡頭51的光學傳遞函 數越高。通常MTF會測試待測鏡頭51不同視場角及軸向 •的光學傳遞函數，因此，除了在待測鏡頭51正中央顯示 -縱向及橫向測試條紋外，亦可在不同的位置顯示縱向及橫 ¥向測試條紋，以測試待測鏡頭51在不同的視場角下的解 析能力，並透過影像擷取器37所擷取之成像模糊程度， 即可以分析出待測鏡頭51之光學傳遞函數。 (6).鏡頭扭曲及畸變（Distortion)測試 理想的待測鏡頭51在影像擷取器37上聚焦之成像圖 案與測試圖案11間形成等比例的放大或縮小，但是設計 不良、加工不當或組裝有問題的待測鏡頭5】，其鏡頭在影 -像擷取器37上所聚焦的成像圖案會產生扭曲及畸變 (distortion)。測試待測鏡頭51是否扭曲及畸變 (Distortion)係可採用第13(A)圖之方格狀之測試圖案 11，影像擷取器37經由待測鏡頭51擷取方格狀之測試圖 案11，並取得成像圖案，若待測鏡頭51為一正常的鏡頭， 理應會取得方格狀之成像圖案，反之，若待測鏡頭51具 有明顯的畸變或扭曲，則影像擷取器37所擷取之成像圖 案可能會得到如第13(B)所示之扭曲般的圖案。 13 M379758 (Ό·鏡頭場曲（Field Curvature)及像散（Astigmatism)測 言式 理想的待測鏡頭51其成像的整體晝面理應全部均是 對焦狀態，但，設計不良或有缺陷的的待測鏡頭51，其成 像晝面會有一部分對焦而另一部分失焦的狀況，此現象稱 為場曲（Field Curvature)或像散（Astigmatism)。場曲測 試過程中，將採用第13(A)圖之方格狀之測試圖案11，若 影像擷取器37擷取出一全部清楚的方格線條之成像圖 案，則代表待測鏡頭51通過場曲或像散的測試，反之， 若影像擷取器37擷取出一部分方格線條清楚及部分方格 線條模糊之成像圖案，則代表待測鏡頭51為一缺陷鏡頭。 (8).鏡頭亮度分佈（Light Distri but ion)測試 理想的待測鏡頭51，當均勻的平面光在進入待測鏡頭 51後，影像擷取器37上成像面所形成的成像之光強度理 應均勻分佈。但，實際上鏡頭成像面之正中心的光強度往 往會大於最外圍的光強度，假如，兩者亮度相差太大，將 會影響成像品質。亮度分佈測試係可採用白色畫面的測試 圖案11，如第14(A)圖所示，假若待測鏡頭51的亮度分 佈不均勻，則影像擷取器37所擷取出之成像圖案，可能 會出現如第14(B)圖所示之灰階分佈不均的圖案，再者， 亮度分佈測試的測試結果可依使用者之需求定義灰階範 圍及層數，繪製出類似於地圖等高線圖之亮度分佈等高線 圖。 14 M379758 (9).鏡頭色差（Chr⑽atic aberration)測試 理想的待測鏡頭51會完美的將所看到的晝面，不論 是彩色圖案或是黑白圖案皆以一定比例或放大成像在影 像擷取器37的感光元件上。但是，實際的待測鏡頭51假 如沒有經過減少色差之設計，當彩色圖案透過待測鏡頭51 所形成之像會有明顯的彩色像差，這個情形是因為彩色的 •光線是由許多不同波長的光所構成，不同波長的光在相同 -介質下會有不同的折射係數。故，彩色圖案在經過沒有修 ®正色差的待測鏡頭51，就會產生色差。本創作色差測試係 可採用彩色晝面的測試圖案11，如第15圖所示，並經由 影像擷取器37擷取出成像圖案，以進行待測鏡頭51的色 差分析。 (10).鏡頭色澤（Color)測試 色澤測試主要用以測試待測鏡頭51或影像擷取器37 成像後的色澤與測試圖案li的差異。由於色澤的定義有 許多種，因此在進行色澤測試前，圖形顯示器10必須先 經過色澤的校正，或者影像擷取器37需經過取像色澤之 校正。實際色澤測試時，圖形顯示器10會如第15圖般顯 示許多彩色方塊之測試圖案11，接著，透過影像擷取器 37擷取待測鏡頭51之成像圖案，分析成像圖案，即可得 到待測鏡頭51的成像色澤與原始測試圖案11(如第17圖 所示）色澤之差異。 總合上述，本創作檢測裝置100不僅可用以多數個待 15 M379758 測鏡頭51或多種尺寸類型待測鏡頭51的檢測，並且可對 於多數個待測鏡頭51同時進行檢測，以加快總體的檢測 數量，再者，可更換不同的測試圖案11，以對於待測鏡頭 51進行各種光學特性之測試，如此，以判斷待測鏡頭51 之光學特性是否符合使用上的規定。 以上所述者，僅為本創作之一較佳實施例而已，並非 用來限定本創作實施之範圍，即凡依本創作申請專利範圍 所述之形狀、構造、特徵及精神所為之均等變化與修飾， 均應包括於本創作之申請專利範圍内。 【圖式簡單說明】 第1圖：為本創作鏡頭成像品質之檢測裝置一較佳實施例 之結構立體圖。 第2圖：為本創作鏡頭成像品質之檢測裝置之局部結構立 體圖。 第3 (A)圖及第3 (B)圖：為本創作托盤上擺設其中一類型 待測鏡頭之結構立體圖。 第4 (A)圖及第4 (B)圖··為本創作托盤上擺設另一類型待 測鏡頭之結構立體圖。 第5 (A)圖及第5 (B)圖：為本創作托盤上擺設又一類型待 測鏡頭之結構立體圖。 第6圖：為本創作移動平台一較佳實施例之結構立體圖。 第7圖：為本創作移動平台又一實施例之結構立體圖。 第8圖：為本創作鏡頭成像品質之檢測裝置一較佳實施例 16 M379758 之檢測流程圖。 第9圖：為本創作用以檢測待測鏡頭之銳利度及對比度之 一測試圖案。 第10圖：為本創作灰階值分佈圖。 第11圖：為本創作用以檢測待測鏡頭之銳利度及對比度 之另一測試圖案。 -第12圖：為本創作用以檢測待測鏡頭之光學傳遞函數之 . 一測試圖案。 %第13(A)圖：為本創作用以檢測待測鏡頭之扭曲之一測試 圖案。 第13(B)圖：為本創作待測鏡頭之扭曲測試所取得之一成 像圖案。 第14(A)圖：為本創作用以檢測待測鏡頭之亮度分佈之一 測試圖案。 第14(B)圖：為本創作待測鏡頭之亮度分佈測試所取得之 一成像圖案。 0第15圖：為本創作用以檢測待測鏡頭之色澤之一測試圖 案。 【主要元件符號說明】 100 檢測裝置 10 圖形顯示器 11 測試圖案 20 鏡頭固定平台 21 鏡頭測試區 30 移動平台 301 移動平台 31 第一移動單元 17 M379758 32 第一固定單元 33 第二移動單元 35 第三移動單元 37 影像擷取器 371 S路徑 372 縱向路徑 50 托盤 501 置放槽孔 51 待測鏡頭The straw is adjusted by the moving thousand 30 to the better one. The focus of the lens 51 to be tested is focused.骤 S S907 ' After focusing, the image manipulator 37 captures a specific test pattern displayed on the Bmn 1G via the mirror to be tested, for example, a pattern of sharpness of the test) 'to obtain an imaging pattern of the lens to be tested . ',,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, · Sharpness), and the detection result of each lens 51 to be tested is output. Furthermore, if a test of another optical characteristic (for example, contrast) is to be performed, step S906 is performed, and: ^ goes... ^ Otherwise, the entire detection process is ended. In step S906, the Luo:b, 丨# detecting device 100 can control the graphic display element, the /5 pattern 11 through the computer to use the different test pattern 11 words to enter the lens 51 to be tested, Μ 赖丁A test of optical properties, and continue with steps S907 and S909, the optical characteristics of the internal test, such as: effective focal length ^ wood, optical transfer letter # + ^ number (9) hit, distortion , field curvature, brightness distribution, color or color) until the test is completed. 9 M379758 continues, in step S903, if the detecting device 100 determines that the image finger-receiving device 37 is plural, step S904 is performed, and the image capturing devices 37 are respectively moved to the four corners of the tray 50 through the mobile platform 301. Below the four to-be-measured lenses 51, the detecting device 100 analyzes the respective focal lengths between the image capturing device 37 and the four to-be-measured lenses 51. If the four focal lengths are the same, then the representative tray 50 is placed flat in the lens test area 21 of the lens fixing platform 20, and the subsequent steps S905-S909 can be performed. On the other hand, if the four focal lengths are not consistent, it means that the tray 50 is not placed flat in the lens test area 21 of the lens fixing platform 20, and the tray 50 or the lens to be tested 51 needs to be repositioned until it is leveled to avoid the subsequent step S905. At the same time, each of the image capturing devices 37 cannot simultaneously focus on a large number of the lenses 51 to be tested. In addition, the original detecting device 100 can perform at least one optical characteristic test on the lens 51 to be tested, and the following will be introduced: (1). Effective Focus Length (EFL) test due to the image picker 37 The relative position between (for example, a camera or a camera), the lens under test 51, and the graphic display 1 is fixed, and the relative distance is presumably known. In addition, the graphic size of the test pattern 11 displayed on the graphic display unit 1 is known, and the image size of the image pattern captured by the image picker 37 can also be known from the number of pixels. Therefore, it is possible to obtain the focal length of the lens 51 to be tested by knowing the relative distance and the size of the imaging (4) in the optical formula. (2) Sharpness test M379758 Sharpness is most commonly used to judge whether the lens is in focus. When the lens sharpness value is the highest, the imaging focus of the lens 51 to be tested will fall on the photosensitive element of the image picker 37. The imaging focus of the opposite lens 31 to be tested does not fall on the photosensitive element of the image capturing device 37, so that the imaging pattern received by the image capturing device 37 may be blurred, that is, unfocused. When the graphic display 10 is displayed as a black and white test pattern 11, as shown in FIG. 9, the center of the imaging pattern captured by the image capturing device 37 takes a horizontal line, and the position of the pixel is the horizontal axis. The order value is the vertical axis, that is, % can obtain a gray scale value distribution map, as shown in Fig. 10. Assuming that the lens 51 to be tested is perfect, the gray scale value to be plotted will change as shown in Fig. 10(A), and the slope of the grayscale value of the pattern boundary region will be close to infinity. However, the change in the grayscale value plotted by the lens 51 to be tested, which generally meets the requirements of the demand, is as shown in Fig. 10(B), and the slope of the change in the grayscale value in the boundary of the pattern is continuously changed. If the image to be tested 51 is not in focus with the image picker 37, or the image quality of the lens 51 to be tested itself is not good, the gray scale value to be plotted will change as shown in Fig. 10(C). Referring to Fig. 10, the gray scale values of two adjacent pixels can be subtracted and taken to an absolute value, and the sharpness value of the lens 51 to be tested can be detected by the creation. Of course, although the present invention uses the ninth image as the detection of the sharpness of the lens 51 to be tested, as long as the type pattern of the black and white contrast characteristic in the pattern 11 can be used, as shown in FIG. 11, it can achieve sharp detection. Degree of results. 11 M379758 (3) . Focus Depth Test When the lens under test 51 and the image picker 37 are adjusted to the in-focus state by the moving platform 30/301, the sharpness of the detecting device 1〇〇 will be the maximum value. Since the lens has the characteristic of depth of field, the image pickup device 37 can still maintain the sharpness of the detecting device 100 to the maximum value when the lens 51 to be tested is fixed. When the sharpness drops rapidly, it means that the image picker 37 has exceeded the depth of field range, and the detecting device 1 is gradually out of focus. Here, by recording the position of the mobile platform 3〇/3〇1 and the change of the relative sharpness value, the image capturing device 37 can still maintain the in-focus state for the lens 51 to be tested within a fixed range, and the fixed range is to be The depth of field of the lens 51 is measured. (4) Contrast test When doing the contrast test, 'the X value of the test pattern ( (the brightest grayscale value of the pattern, for example: 255) and the Υ value (the darkest grayscale value of the pattern) must be known in advance. For example: 〇), the comparison value formula can be: (χ_γ) / (χ + γ). The image capturing device 37 captures the test pattern 11 displayed by the graphic display 10 via the lens 31 to be tested (as shown in FIG. 9 or FIG. 11), and then analyzes the X of the imaging pattern captured by the image capturing device 37. The value and the gamma value are brought into the formula (XY) / (X + t), and the contrast of the lens 51 to be tested can be obtained to compare whether there is a contrast difference between the imaging pattern and the test pattern 11. (5) Lens Optical Transfer Function (MTF) Test 12 M379758 MTF is a function of spatial frequency. When applied to the lens, the number of times a black line and a white line are repeated in unit length is “line/unit length”. If the image capturing device 37 captures the MTF test pattern 11 on the graphic display 10 via the lens 31 to be tested, as shown in FIG. 12, the more the number of lines that can be distinguished by the captured imaging pattern, the representative The optical transfer function of the measuring lens 51 is higher. Generally, the MTF tests the optical transfer function of the different angles of view and the axial direction of the lens 51 to be tested. Therefore, in addition to displaying the longitudinal and lateral test strips in the center of the lens 51 to be tested, vertical and horizontal directions can be displayed at different positions. The test stripe is tested to test the resolution of the lens 51 under different angles of view, and the degree of image blur obtained by the image picker 37 can be analyzed, that is, the optical transfer function of the lens 51 to be tested can be analyzed. (6). Lens Distortion and Distortion Test The ideal image to be tested 51 is enlarged or reduced in proportion to the image pattern focused on the image picker 37 and the test pattern 11, but the design is poor, improperly processed, or assembled. The problematic lens to be tested 5], the imaging pattern whose lens is focused on the image capturing device 37 causes distortion and distortion. To test whether the lens 31 to be tested is distorted or distorted, the test pattern 11 in the checkered shape of FIG. 13(A) can be used, and the image picker 37 picks up the check pattern 11 in the checkered shape through the lens 51 to be tested. And obtaining the imaging pattern, if the lens 51 to be tested is a normal lens, it should obtain a square-shaped imaging pattern. Conversely, if the lens 51 to be tested has obvious distortion or distortion, the image capturing device 37 captures The image pattern may give a twisted pattern as shown in Fig. 13(B). 13 M379758 (Field Curvature and Astigmatism) The ideal image of the lens to be tested 51 should be in focus, but poorly designed or defective. The measuring lens 51 has a condition that a part of the imaging plane is in focus and the other part is out of focus. This phenomenon is called Field Curvature or Astigmatism. In the field curvature test, the 13th (A) will be used. The checkered pattern 11 of the figure, if the image picker 37 extracts an image pattern of all clear square lines, it represents the test of the field to be tested 51 by field curvature or astigmatism, and vice versa, if the image is captured The image 37 of the device 37 is taken out and the image pattern of the square line is blurred, and the image to be tested 51 is a defective lens. (8). Light Distri but ion test The ideal lens to be tested 51 When the uniform planar light enters the lens 51 to be tested, the intensity of the imaged light formed by the imaging surface on the image capturing device 37 should be evenly distributed. However, in reality, the light intensity at the center of the imaging surface of the lens tends to be At the outermost light intensity, if the brightness difference between the two is too large, the image quality will be affected. The brightness distribution test can use the white pattern test pattern 11, as shown in Fig. 14(A), if the lens 51 to be tested If the brightness distribution is not uniform, the image pattern taken out by the image picker 37 may have a pattern of uneven gray scale distribution as shown in FIG. 14(B). Furthermore, the test result of the brightness distribution test may be Define the grayscale range and the number of layers according to the user's needs, and draw a contour map similar to the brightness distribution of the map contour map. 14 M379758 (9). Chr(10)atic aberration test The ideal lens to be tested 51 will be perfect. The painted surface, whether it is a color pattern or a black and white pattern, is imaged on the photosensitive element of the image capturing device 37 at a certain ratio or magnification. However, the actual lens 51 to be tested does not have a design to reduce chromatic aberration, when color The image formed by the pattern through the lens 51 to be tested has obvious chromatic aberration. This is because the color of the light is composed of many different wavelengths of light, different wavelengths of light. There will be different refractive indices under the same medium. Therefore, the color pattern will produce chromatic aberration after passing through the lens 51 to be tested without correcting the chromatic aberration. The chromatic aberration test can use the test pattern 11 of the color enamel, such as As shown in Fig. 15, the imaging pattern is taken out by the image capturing device 37 to perform color difference analysis of the lens 51 to be tested. (10). Color test The color test is mainly used to test the lens 51 or image to be tested. The difference between the color after imaging of the picker 37 and the test pattern li. Since there are many definitions of the color, the graphic display 10 must first undergo color correction before the color test, or the image capture device 37 needs to be imaged. Correction of color. In the actual color test, the graphic display 10 displays a plurality of color square test patterns 11 as shown in FIG. 15, and then the image pattern of the lens 51 to be tested is captured by the image extractor 37, and the image pattern is analyzed to obtain a test pattern. The image color of the lens 51 is different from the color of the original test pattern 11 (as shown in Fig. 17). In summary, the present creation detecting apparatus 100 can be used not only for detecting a plurality of to-be-measured lenses 51 or a plurality of size-type to-be-measured lenses 51, but also for detecting a plurality of to-be-measured lenses 51 at the same time to speed up the total number of detections. Furthermore, different test patterns 11 can be replaced to test various optical characteristics of the lens 51 to be tested, so as to determine whether the optical characteristics of the lens 51 to be tested meet the requirements for use. The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the shape, structure, characteristics and spirit described in the scope of the patent application are equally changed. Modifications shall be included in the scope of the patent application of this creation. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing the structure of a preferred embodiment of the imaging device for imaging quality of the present lens. Fig. 2 is a partial structural perspective view of the detecting device for the imaging quality of the creation lens. Figure 3 (A) and Figure 3 (B): A perspective view of the structure of one of the types of lenses to be tested placed on the creation tray. Figure 4 (A) and Figure 4 (B) show a three-dimensional view of the structure of another type of lens to be tested on the creation tray. Figure 5 (A) and Figure 5 (B): A perspective view of the structure of another type of lens to be tested placed on the creation tray. Figure 6 is a perspective view showing the structure of a preferred embodiment of the present mobile platform. Figure 7 is a perspective view showing the structure of still another embodiment of the creation mobile platform. Fig. 8 is a flow chart showing the detection of a device for detecting the quality of the lens of the present invention. Figure 9: This is a test pattern used to detect the sharpness and contrast of the lens to be tested. Figure 10: The distribution of grayscale values for this creation. Figure 11: This is another test pattern used to detect the sharpness and contrast of the lens to be tested. - Figure 12: This is a test pattern used to detect the optical transfer function of the lens to be tested. %Fig. 13(A): This is a test pattern used to detect the distortion of the lens to be tested. Fig. 13(B): An image pattern obtained by the distortion test of the creation of the lens to be tested. Figure 14(A): This is a test pattern used to detect the brightness distribution of the lens to be tested. Figure 14(B): An imaging pattern obtained by testing the brightness distribution of the lens to be tested. 0Fig. 15: This is a test pattern for detecting the color of the lens to be tested. [Main component symbol description] 100 detecting device 10 graphic display 11 test pattern 20 lens fixing platform 21 lens test area 30 mobile platform 301 moving platform 31 first moving unit 17 M379758 32 first fixing unit 33 second moving unit 35 third movement Unit 37 Image Picker 371 S Path 372 Longitudinal Path 50 Tray 501 Place Slot 51 Probe to Be Tested
1818