1301192 九、發明說明： 【發明所屬之技彳标領域】 本發明係有關於一種影像掃描器，且特別有關於一種 具有多個鏡頭組之影像掃描器。 【先前技#ί】 在三維量測中，量測裝置通常具有一個光源與一個鏡 頭。光源可以發射雷射光至待測物體的表面。鏡頭可以接 _ 收反射來自物體表面的光曲線圖案影像，並將其成像於影 像感測器上。量測裝置可以依據三角測距原理 (Triangulation Theory)與得到的光曲線圖案影像計算待測 物體表面的二維座標。 美國專利第6,529,280號案揭示一種用於測量待測物 三維座標的三維測量裝置及其測量方法。其中，該三維測 量裝置係採用單鏡頭變焦控制方式，搭配可見光帶由上而 下地掃描待測物，進而透過接收反射掃描光帶之複數影 φ 像，分別運算以決定每一物點的相位值大小，並經三角幾 何關係校正以將各該相位值轉換成複數高度資訊，以計算 出該待測物之三維座標。 由於習知量測裝置大多是採用單一鏡頭與/或固定焦 長的鏡頭設計，一種量測裝置只能在一特定掃描範圍内提 供一種固定的解析度（精度）量測。然而，不同的待測物體 有不同的量測需求，舉例來說，3D的齒型外型需要高解析 度且小範圍的三維量測，而大型物件或人體掃描需要低解 0949-A21831 TWF(N2)；P51950109TW；yianhou 6 1301192 析度且大範圍的三維量測。由 r 、 ；上述兩種需求在光機設計 Μ季人月立才父正上亚不相同，佶用， 頭與解析度的3二Si同時擁有不同焦長鏡 、、則以凫兀闩旦、I 以應付不同尺寸的物件量 測以及不同Ϊ測解析度的要求。 【發明内容】 有鏗於此，本發明提供多鏡頭組影像掃描哭。 =明貫，例之多鏡頭组影像掃描器，包括—旋轉機 ΪΓ —弟—鏡頭組、—第二鏡頭組與—處理單元。 光源設置於旋轉機構之上，用專 一、* 產生—光平面，以照射至 :測物之表面，從而產生相應被測物之表面之—光曲線 圖木影像。第-鏡頭組設置於旋轉機構之上，且有一第一 :析度’用以取得光平面上第—解析度之光曲線圖案影 !:二=旋轉機構之上，具有-第二解析度， ㈡… 斫度之先曲線圖案影像。處理單 =疋-#描速度與-掃描角度，依據掃描速度盥掃描角 斤絲技1 ^ . 說碩組或第二鏡頭組進行 旋轉知描。處料元依據被測物之表面上—第—被掃描區 域所相應之第-解析度之光曲線圖案影像，計算第一被掃 描區域之表面的三維座標值，或依據被測物之表面上一第 ^皮掃描區域所相應之第二解析度之光曲線圖案影像，計 异第二被掃描區域之表面的三維座標值。 為使本發明之上述目的、特徵和優點能更_易懂， 下文特舉實施例，並配合所附圖示，詳細說明如下。 0949-A21831 TWF(N2)；P51950109TW；yianhou 7 1301192 【實施方式】 器。第W依據本發明實施心多鏡頭組影像婦描 依據本發明實施例之多鏡頭組 旋轉機構110、一光源120、一第象知描$⑽包括一 頭組140與-處理單元150。在本實::：13:、一第二鏡 —鏡頭組⑽、與第二鏡頭組_===⑴〇、第 :上且其相對位置係固定的。本實施例係採用單構广 ，如雷射二極體，用以產生一雷射 光源 測物的表面，從而產生相應 :面：射在被 ，第-鏡頭組13。與第二鏡頭組 與解析度之光曲線圖案影像。處理單元Μ件不， :::速度與一掃描角度，且依據掃描速度與掃描= 機構110帶動光源12〇、第—鏡頭組13〇與第：二 五、、、且140進行旋轉掃描。處理單元15〇可 ^見 原理與影像光點分析來分析光曲線 二角剩距 掃描過之區域表面的三維座標值。 7L 150可以同時透過第一鏡頭組13〇與第二鏡頭級， 取光曲線圖案影像，並計算被掃描過之區域表面的。員 標值，或是由第-鏡頭組130與第二鏡頭組14〇中^座 打擷取，並計算被掃描過之區域表面的三維座桿值進 第2圖顯示依據本發明實施例之㈣純 光源與第一與第二鏡頭組。 傅上之 0949-A21831 TWF(N2)；P51950109TW；yianhou 1301192 在此實施例中，光源、笙 A 一 夕 你120弟—鏡頭組130與第二鏡 頭組140係設置於旋轉機播η π々 卜^ 和賊構U〇之上。第一鏡頭組130與 第二鏡頭組140係位於光、馬彳）〇 尤源12〇的同一側，且第二鏡頭組 140係相疊於第一鏡頭誕]% 只且130之上。第一鏡頭組130與第1301192 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to an image scanner, and more particularly to an image scanner having a plurality of lens groups. [Previous technique #ί] In three-dimensional measurement, the measuring device usually has a light source and a lens. The light source can emit laser light to the surface of the object to be tested. The lens can be used to reflect the image of the light curve from the surface of the object and image it onto the image sensor. The measuring device can calculate the two-dimensional coordinates of the surface of the object to be tested according to the triangulation theory and the obtained light curve pattern image. U.S. Patent No. 6,529,280 discloses a three-dimensional measuring device for measuring a three-dimensional coordinate of a test object and a measuring method thereof. The three-dimensional measuring device adopts a single-lens zoom control mode, and scans the object to be tested from top to bottom with the visible light band, and then receives the complex image φ image of the reflected scanning light band to calculate the phase value of each object point. The size is corrected by a triangular geometric relationship to convert each phase value into a complex height information to calculate a three-dimensional coordinate of the object to be tested. Since conventional measuring devices are mostly designed with a single lens and/or a fixed focal length, a measuring device can only provide a fixed resolution (accuracy) measurement within a specific scanning range. However, different objects to be tested have different measurement requirements. For example, 3D tooth shape requires high resolution and small range of 3D measurement, while large objects or human body scans require low solution 0949-A21831 TWF ( N2); P51950109TW; yianhou 6 1301192 Resolution and a wide range of three-dimensional measurements. By r, the above two kinds of requirements are different in the design of the optical machine, and the two are different. , I to cope with the measurement of different sizes of objects and the requirements of different speculation resolution. SUMMARY OF THE INVENTION In view of the above, the present invention provides a multi-lens group image scanning cry. = Ming Guan, for example, multiple lens group image scanners, including - rotating machine - brother - lens group, - second lens group and - processing unit. The light source is disposed on the rotating mechanism, and the light plane is generated by a specific, * to irradiate to the surface of the object to be measured, thereby generating a light image of the surface of the corresponding object to be tested. The first lens group is disposed on the rotating mechanism, and has a first: resolution degree for obtaining a light curve pattern of the first resolution on the light plane!: two = above the rotating mechanism, having a second resolution, (2)... The first curve pattern image of the twist. Processing list = 疋 - # 速度 speed and - scan angle, according to the scanning speed 盥 scan angle 斤 丝 1 ^ ^ Say the master group or the second lens group to rotate the knowledge. The material element calculates the three-dimensional coordinate value of the surface of the first scanned area according to the first-resolution light curve pattern image corresponding to the first to-be-scanned area on the surface of the object to be tested, or according to the surface of the object to be tested. The second resolution light curve pattern image corresponding to the scan area of the first skin scans the three-dimensional coordinate value of the surface of the second scanned area. The above described objects, features and advantages of the present invention will become more apparent from the following description of the appended claims. 0949-A21831 TWF(N2); P51950109TW; yianhou 7 1301192 [Embodiment] According to the present invention, a multi-lens group rotating mechanism 110, a light source 120, and an imaginary image (10) include a head group 140 and a processing unit 150. In the real:::13:, a second mirror - lens group (10), and the second lens group _=== (1) 〇, the first: and its relative position is fixed. In this embodiment, a single structure, such as a laser diode, is used to generate a surface of a laser light source, thereby generating a corresponding surface: a shot, a first lens group 13. And the second lens group and the resolution light curve pattern image. The processing unit is not, ::: speed and a scanning angle, and according to the scanning speed and scanning = mechanism 110 drives the light source 12 〇, the first lens group 13 〇 and the second: 、, and 140 rotate scan. The processing unit 15 can see the principle and image spot analysis to analyze the three-dimensional coordinate value of the surface of the scanned area. The 7L 150 can simultaneously pass through the first lens group 13 〇 and the second lens level, take a light curve pattern image, and calculate the surface of the scanned area. The value of the member is either captured by the first lens group 130 and the second lens group 14 and calculates the three-dimensional seatpost value of the surface of the scanned region. FIG. 2 shows an embodiment according to the present invention. (4) Pure light source and first and second lens groups. Fu Shangzhi 0949-A21831 TWF (N2); P51950109TW; yianhou 1301192 In this embodiment, the light source, 笙A, one of your 120 brothers - the lens group 130 and the second lens group 140 are set on the rotating machine η π 々 ^ And the thief is above U〇. The first lens group 130 and the second lens group 140 are located on the same side of the light source, the second lens group 140, and the second lens group 140 is stacked on the first lens and only 130. First lens group 130 and
二鏡頭組M0的解析度係不同的。第—鏡頭組13〇為低解 析度鏡頭組H独14G為_析度鏡頭組。第一鏡 頭組二30包括-柱面鏡k 131、_定焦鏡頭133與一影像 感測器135。其中，柱面鏡組uu系用以調整定焦鏡頭133 由光源120發射出之光平s 2〇〇取得之光曲線圖案影像的 範圍。為了過濾雜光’可依據光源波長在定焦鏡頭133前 加進-濾光鏡13—2。此外，為了取得清晰的影像，可以在 影像感測器135前加入一斜角座134，使得影像感測器135 的感測面與定焦鏡1員133白勺光軸間有一夾角。類似地，第 二鏡頭組140包括一柱面鏡組141、_濾光鏡142、一定焦 鏡頭143、斜角座144與一影像感測器145。其中，柱面鏡 組141係用以调整定焦鏡頭143由光源發射出之光平 面200取得之光曲線圖案影像的範圍。其中，定焦鏡頭133 與143具有不同的焦長。值得注意的是，旋轉機構n〇之 方疋轉軸RA方向與光源12〇所發射出之光平面2〇〇之法線 方向係垂直。 第3圖顯示依據本發明實施例之鏡頭組的取像範圍。 如第3圖所不’光源120發射出光平面200。兩鏡頭組的 掃描角度可以設定為不同。高解析度者（第二鏡頭組140) 掃描角度小’低解析度（第一鏡頭組13〇)者掃描角度大。其 0949-A2刪TWF(N2);P5195〇1〇9TW;yianh〇u 1301192 中，第一鏡頭組130的取像範圍係範圍300，第二鏡頭組 140的取像範圍係範圍400。在此實施例中，高解析度之第 二鏡頭組140的量測距離及縱深寬度與高度小於低解析度 之第一鏡頭組130。被測物若置於範圍300，則光平面200 交於被測物表面之光曲線圖案影像會成像於影像感測器 135。若被測物置於範圍400，則光平面200交於被測物表 面之光曲線圖案影像會成像於影像感測器145。 如前所述，兩鏡頭組的掃描角度可以設定為不同。在 第3圖的例子中，第一鏡頭組130與第二鏡頭組140的取 像範圍係不重疊的，如第4A圖所示。然而，在一些實施 例中，依據不同的設計需求，第一鏡頭組130與第二鏡頭 組140的取像範圍亦可以相互重疊，如第4B圖所示。 在一些實施例中，第一鏡頭組130與第二鏡頭組140 可以採用不同的焦長鏡頭，搭配適當像素數目之影像感測 器，可以使得取像範圍400之解析度較高而取像範圍300 之解析度較低。設計上兩者達到一定程度之差距，則可應 > 用於不同大小尺寸及解析度需求之掃描量測。在一些實施 例中，高解析度且小取像範圍之鏡頭組可以用於掃描較小 型物件或大型物件局部位置之精細掃描，而低解析度且大 取像範圍之鏡頭組可以用於大型物件之掃描，從而快速獲 得其外觀之三維資料。 必須提醒的是，第2圖中相關構件的設置位置僅為本 發明之例子之一。相關構件的設置位置可以依據設計上空 間安排的需要而有各種變化。總之，維持兩鏡頭組共用同 0949-A21831TWF(N2)；P51950109TW；yianhou 10 1301192 一光源之特性即可。舉例來說，第一鏡頭組130與第二鏡 頭組140可以分別設置於光源120的兩側，如第5圖所示。 在一些情況中，為了縮減多鏡頭組影像掃描器100所佔的 空間，可以在光源120相應光平面200之投光路徑中加入 一平面反射鏡121，以透過反射使得光路轉折，如第6a圖 所示。此外，第一鏡頭組130或第二鏡頭組140取得光曲 線圖案影像之取光路徑中亦可以加入一平面反射鏡，以使 得光路轉折。第6B圖顯示在第二鏡頭組14〇之取光路徑 • 中加入平面反射鏡146的例子。透過平面反射鏡的使用可 以使得光源120及鏡頭組130與14〇之位置可以進行調敕 而達到節省空間之目的。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明’任何熟悉此項技藝者，在不脫離本發明之精 神和範圍内，當可做些許更動與潤飾，因此本發明之保^ 範圍當視後附之申請專利範圍所界定者為準。 μThe resolution of the two lens groups M0 is different. The first-lens group 13〇 is a low-resolution lens group H alone 14G is a _resolution lens group. The first lens group two 30 includes a cylindrical mirror k 131, a fixed focus lens 133 and an image sensor 135. The cylindrical mirror group uu is used to adjust the range of the light curve pattern image obtained by the light source 120 emitted by the light source 120. In order to filter the stray light, the filter 13-2 can be added before the fixed focus lens 133 depending on the wavelength of the light source. In addition, in order to obtain a clear image, a beveled seat 134 can be added in front of the image sensor 135 such that the sensing surface of the image sensor 135 has an angle with the optical axis of the fixed focus mirror member 133. Similarly, the second lens group 140 includes a cylindrical lens group 141, a filter 142, a fixed focus lens 143, a beveled seat 144, and an image sensor 145. The cylindrical mirror group 141 is used to adjust the range of the light curve pattern image obtained by the fixed plane lens 143 by the light plane 200 emitted by the light source. Among them, the fixed focus lenses 133 and 143 have different focal lengths. It is to be noted that the direction of the rotation axis RA of the rotating mechanism n is perpendicular to the normal direction of the light plane 2〇〇 emitted by the light source 12A. Figure 3 shows the imaging range of the lens group in accordance with an embodiment of the present invention. The light source 120 emits a light plane 200 as shown in Fig. 3. The scanning angle of the two lens groups can be set to be different. The high-resolution person (second lens group 140) has a small scanning angle. The low-resolution (first lens group 13〇) has a large scanning angle. In the 0949-A2 deletion TWF (N2); P5195〇1〇9TW; yianh〇u 1301192, the first lens group 130 has an imaging range of 300, and the second lens group 140 has an imaging range of 400. In this embodiment, the measurement range and the depth width and height of the high resolution second lens group 140 are smaller than the low resolution first lens group 130. If the measured object is placed in the range 300, the light curve pattern image of the light plane 200 intersecting the surface of the object to be tested is imaged on the image sensor 135. If the object to be measured is placed in the range 400, the light curve pattern image of the light plane 200 on the surface of the object to be tested is imaged on the image sensor 145. As mentioned earlier, the scanning angles of the two lens groups can be set to be different. In the example of Fig. 3, the imaging ranges of the first lens group 130 and the second lens group 140 do not overlap, as shown in Fig. 4A. However, in some embodiments, the imaging ranges of the first lens group 130 and the second lens group 140 may overlap each other according to different design requirements, as shown in FIG. 4B. In some embodiments, the first lens group 130 and the second lens group 140 can adopt different focal length lenses, and the image sensor with a suitable number of pixels can make the resolution of the image capturing range 400 higher and the image capturing range. The resolution of 300 is lower. If the design achieves a certain degree of difference, it can be used for > scanning measurement for different size and resolution requirements. In some embodiments, a high resolution and small image range lens group can be used to scan a fine object or a fine scan of a large object local position, while a low resolution and large image range lens group can be used for large objects. Scan to quickly obtain 3D data of its appearance. It must be reminded that the position of the relevant member in Fig. 2 is only one of the examples of the present invention. The location of the associated components can vary depending on the needs of the design space arrangement. In short, the two lens groups are maintained to share the same characteristics as 0949-A21831TWF(N2); P51950109TW; yianhou 10 1301192. For example, the first lens group 130 and the second lens group 140 may be respectively disposed on both sides of the light source 120, as shown in FIG. In some cases, in order to reduce the space occupied by the multi-lens group image scanner 100, a plane mirror 121 may be added to the light projecting path of the corresponding light plane 200 of the light source 120 to transmit the light path through reflection, as shown in FIG. 6a. Shown. In addition, a plane mirror may be added to the light taking path of the first lens group 130 or the second lens group 140 to obtain the light curve pattern image, so that the light path is turned. Fig. 6B shows an example in which the plane mirror 146 is incorporated in the light taking path of the second lens group 14'. Through the use of the plane mirror, the position of the light source 120 and the lens groups 130 and 14〇 can be adjusted to save space. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of the warranty is subject to the definition of the scope of the patent application. μ
0949-Α21831 TWF(N2)；P51950109TW；yianhou 11 1301192 【圖式簡單說明】 第1圖為一示意圖係顯示依據本發明實施例之多鏡頭 組影像掃描器。 第2圖為一示意圖係顯示依據本發明實施例之設置於 旋轉機構上之光源與第一與第二鏡頭組。 第3圖為一示意圖係顯示依據本發明實施例之鏡頭組 的取像範圍。 第4A圖為一示意圖係顯示依據本發明實施例之相應 p 不同鏡頭組之不重疊的取像範圍。 第4B圖為一示意圖係顯示依據本發明實施例之相應 不同鏡頭組之重疊的取像範圍。 第5圖為一示意圖係顯示依據本發明另一實施例之構 件配置例子。 第6A圖為一示意圖係顯示依據本發明實施例之具有 平面反射鏡之構件配置例子。 第6B圖為一示意圖係顯示依據本發明另一實施例之 參 具有平面反射鏡之構件配置例子。 【主要元件符號說明】 100〜多鏡頭組影像掃描器； 110〜旋轉機構； 120〜光源； 130〜第一鏡頭組； 140〜第二鏡頭組； 0949-A21831TWF(N2);P51950109TW;yianhou 12 1301192 150〜處理單元； 131、 141〜柱面鏡組； 132、 142〜濾光鏡； 133、 143〜定焦鏡頭； 134、 144〜斜角座； 135、 145〜影像感測器； 200〜光平面， RA〜旋轉軸； 300、400〜取像範圍； 121、146〜平面反射鏡。0949-Α21831 TWF(N2); P51950109TW;yianhou 11 1301192 [Simplified Schematic] FIG. 1 is a schematic view showing a multi-lens group image scanner according to an embodiment of the present invention. Figure 2 is a schematic view showing a light source and first and second lens groups disposed on a rotating mechanism in accordance with an embodiment of the present invention. Fig. 3 is a schematic view showing the image capturing range of the lens group according to the embodiment of the present invention. Figure 4A is a schematic diagram showing the non-overlapping imaging ranges of the respective p different lens groups in accordance with an embodiment of the present invention. Fig. 4B is a schematic view showing the overlapping imaging range of the respective different lens groups in accordance with an embodiment of the present invention. Fig. 5 is a view showing an example of a configuration of a member according to another embodiment of the present invention. Fig. 6A is a schematic view showing an example of a configuration of a member having a plane mirror according to an embodiment of the present invention. Fig. 6B is a schematic view showing an example of a configuration of a member having a plane mirror according to another embodiment of the present invention. [Main component symbol description] 100~multi-lens group image scanner; 110~rotating mechanism; 120~light source; 130~first lens group; 140~second lens group; 0949-A21831TWF(N2); P51950109TW;yianhou 12 1301192 150~ processing unit; 131, 141~ cylindrical mirror group; 132, 142~ filter; 133, 143~ fixed focus lens; 134, 144~ angled seat; 135, 145~ image sensor; Plane, RA ~ rotation axis; 300, 400 ~ image capture range; 121, 146 ~ plane mirror.
0949-A21831 TWF(N2)；P51950109TW；yianhou0949-A21831 TWF(N2); P51950109TW;yianhou