130528¾50102^ 21655twf.doc/e 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光學裝置，且特別是有關於一種 可調整鏡心的光學鏡頭。 【先前技術】1305283⁄450102^21655twf.doc/e IX. Description of the Invention: [Technical Field] The present invention relates to an optical device, and more particularly to an optical lens that can adjust a mirror core. [Prior Art]
習用鏡片徑向調心裂置最常使用螺絲直接驅動鏡 片’例如美國專利US3989358號。此美國專利揭露以精密 螺絲直接頂住鏡片的-邊’而鏡片的另—邊配置有一採用 彈簧’以提供彈力的頂銷。因此，轉動螺絲便可微調鏡片 光軸的位置。然而，這樣的設計所佔空間非常大，且不利 於鏡筒的小型化。此外’另—個缺點是現在消費性產品所 用的鏡筒常以歸製作，而此種產品通常搭配自攻螺絲， 以降低成本。然而’當自攻藝鎖進娜鏡糾會切 筒少許的塑騎料而污染鏡片。第三個缺點是這項的設 =易找到鏡片的公稱位置（nGminal pQsitiQn)。公稱位置 是調心的起始位置，且從公稱位置開始調心最為 間。此外’彈簧施倾力量需在設計時經過精密的計算， ^長期使用時會有彈性疲乏的問題。類似的專利還有 =1^38797〇#,皆有^間太大的問題。其似螺絲調敕 鏡片的專利例如是美國專利娜漏2、觸61589 I 而在這些美國術所揭露的螺絲並未直 住鏡片^頂住鏡筒。換言之，這些美國專利也有^ 空，很大’而不利於小型化的問題。 第二類調心裝置美國專利US542·號所揭示的螺 I30528250102TW 21655twf.d〇c/e 紋方式。此專利揭露鏡筒的周 架内部周圍有多組陰螺紋 ’而鏡筒支撐框 可選擇某特定陰螺紋與陽不同的中心’並 陰螺紋的中心位於鏡筒的中心此外，有-組 與鏡筒的中心之間有少許的位移。因此，Ϊ陰螺2的中心 是調心位置健於少⑽定位 ，=樣㈣計缺點 變。 置且调心量亦無法任意改 另一種常用於調整鏡片或鏡組位 =S=號所揭示的偏心銷， 疋调正鏡片的轴向位置而非控向位置。 —另夕卜，其他以偏心銷調整鏡片的專利，例如日本公開 案昭—60侧卜此專利的缺點是偏心銷的軸心與 、’兄1由平行。因此’當鏡片位於兩個鏡组之間時，調整 工具無法接近。此外’由於在鏡片邊緣須加工數個刻槽， 而此刻槽將增加很多成本。 【發明内容】 有鑑於此，本發明之目的是提供一種光學鏡頭，以便 於調整鏡組間的鏡片對心。 為達上述或是其他目的，本發明提出一種光學鏡頭， 其包括一套筒、至少一第一鏡片、一第—偏心轴、一第二 偏心軸、一固定環與一第二鏡片，其中第一鏡片配置於套 筒内。第一偏心軸與第二偏心軸配置於套筒上，且第一偏 心軸與第二偏心軸的軸線成一夾角。固定環配置套筒上， 且固定環具有一第一凹槽與一第二凹槽，其分別容置第一 I30528^950102TW 2i655twfd〇c/e 偏心軸與第二偏心軸。第二鏡片配置於固定環内。第一偏 心轴或第二偏心軸轉動，以帶動固定環而改變第二鏡片的 光轴與套筒的中心線之間的相對位置。 在本發明之一實施例中，夾角可是90度。 在本發明之一實施例中，第一偏心軸包括二第一固定 部與連接這些第一固定部之間的一第一作用部。 在本發明之一實施例中，第一偏心軸更包括一第一施 力部，其連接至這些第一固定部其中之一，且第一施力部 具有一第一刻槽。 在本發明之一實施例中，第一固定部與第一作用部可 以是圓柱體，且第一固定部的軸線與第一作用部的軸線相 隔一預定距離。 在本發明之一實施例中，第一固定部可以是圓柱體， 且第一作用部可以是凸輪。 在本發明之一實施例中，第二偏心軸包括二第二固定 部與連接這些第二固定部之間的一第二作用部。 在本發明之一實施例中，第二偏心軸更包括一第二施 力部，其連接至這些第二固定部其中之一，且第二施力部 具有一第二刻槽。 在本發明之一實施例中，第二固定部與第二作用部可 以是圓柱體，且第二固定部的轴線與第二作用部的軸線相 隔一預定距離。 在本發明之一實施例中，第二固定部可以是圓柱體， 且第二作用部可以是凸輪。 I3052&25〇i〇2tw 21655twf.doc/e 在本發明之-實施例中，套筒具有多個支稽凹样，八 別容置第一固定部與第二固定部。 胃刀 、在本發明之一實施例中，第二鏡片與固定環可以是整 合成一體。 正 在本發明之一實施例中，光學鏡頭更包括一保持器 ^與套筒組裝’以固定固定環、第二鏡片、第—偏心轴盘 第一偏心轴。 /、 在本發明之一實施例中，保持器具有多個彈片，其壓 迫第二鏡片，關定第二鏡片與套筒之間的相對位置了 基於上述，本發明採用第一偏心軸與第二偏心軸，以 ，調第二鏡片的位置，因此在不增加零件及組裝的精资声 =況下，本發明經由調整第二鏡片的位置將可以提高ς 為讓本發明之上述和其他目的、特徵和優點能更明顯 董，下文特舉較佳實施例，並配合賴圖式，作詳 明如下。 【實施方式】 圖1疋依照本發明之—實施例之一種光學鏡頭的組合 :而圖2疋依照本發明之一實施例之一種光學鏡頭的爆 圖。請同時參考圖i與圖2，本實施例的光學鏡頭1〇〇 -套筒no、至少一第一鏡片12〇、一第一偏心軸13〇、 二第二偏心軸14。、—固定環15()與—第二鏡片16。，其中 ^鏡片12〇酉己置於套筒u〇e。第一偏心轴13〇與第二 、轴140配置於套筒11〇上，且第一偏心轴與第二 I3052S2501°2tw 21655twf.doc/e 偏t轴140的轴線成—失角。在本實施例中，此夾角較佳 約為9 0度’然而在另—實施例中，此炎角也可以是其他角 度1 =定環150配置套筒U0上，而第二鏡片⑽配置於 固疋，150内。另外，固定環150具有-第-凹槽150a 與第一凹槽15〇b’其分別容置第一偏心轴13〇與第二偏 心軸刚。以下就各構件進行詳細的說明。 一圖3A緣不圖1中的第—偏心軸的前視圖，而圖 、”日不圖1中的第-偏心轴的側視圖。請同時參考圖3A與 • 目3B，第一偏心軸的13〇包括二第-固定部132與連接這 ，第-固定部132之間的—第一作用部134。此外，在本 κ施例中’ $-固定部132與第一作用部134為圓柱體， 且第-固定部132的軸線132a與第一作用部134的轴線 134a相隔一預疋距離。然而，在另一實施例中，第一固定 部132可以是圓柱體，且第一作用部134可以是凸輪。 在本實施例中，套筒110具有多個支撐凹槽u〇a，分 =容置第-固定部132。換言之，第—偏心軸13〇的兩端 鲁 敗入支撐凹槽110a内。然而，為了更精確地控制的第一偏 心軸130的轉動，第一偏心軸13〇也可以更包括一第—施 力部136，其連接至這些第一固定部132其中之―，且第 —施力部130具有一第一刻槽136a。因此，使用者可以經 由第一刻槽136a精確地轉動第一偏心轴130。 請參考圖2，在本實施例中，第一偏心軸13〇與第二 偏心軸140的結構為相同。簡單而言，第二偏心軸的ι4〇 包括二第二固定部142、一第二作用部144與一第二施力 I30528295_tw 21655twf.doc/e 部146，其中第二作用部144連接這些第二固定部142之 間’而第二施力部146連接至這些第二固定部142其中之 一。另外，第一施力部146具有一第二刻槽i46a，以利使 用者精確轉動第二偏心軸的140。同樣地，支撐凹槽11〇a 分別谷置弟二固定部142。再者，第二固定部142與第二 作用部144為圓柱體，且第二固定部142的軸線與第二作 用部144的軸線相隔一預定距離（類似圖3A所示）。然 而，在另一實施例中，第二固定部142可以是圓柱體，且 第二作用部144可以是凸輪。雖然本實施例的第一偏心軸 130與第二偏心軸140的結構為相同，然而在另一實施例 中，第一偏心軸130與第二偏心軸14〇的結構也可以是相 異。 圖4綠示圖1中的固定環的立體圖。請同時參考圖2 與圖4，固疋環15〇的内徑與第二鏡片16〇之外徑相互緊 密配合，因此當固定環15〇移動時，第二鏡片16〇即可同 時且等量的被推動。此外，第一凹槽15〇a的寬度與第一偏 心軸130的第一作用部134的外徑需相互配合。同樣地， 第二凹槽15〇b的寬度與第二偏心軸14〇的第二作用部144 的外徑需相互配合。值得注意的是，在本實施例中，第二 鏡片160與固定環150為獨立構件，然而在另一實施例中， 第二鏡片160與固定環15〇也可以是整合成一體。 請繼續參考圖1與圖2,在本實施例中，光學鏡頭100 更包括一保持器170，其與套筒丨1〇組裝，以固定固定環 150、第一鏡片160、第一偏心軸130與第二偏心軸140。 I305285295_tw 21655twf.doc/e 此外’保持器170具有多個彈片172，而這些彈片i72壓 迫弟一鏡片160’以固疋弟二鏡片160與套筒之間的 相對位置。有關於調整第一鏡片160與套筒ho之間的相 對位置的流程將詳述如後。 圖5A至圖5C繪示調整第二鏡片位置的示意圖。請參 考圖5A與圖3B，第一偏心銷130的第一固定部132嵌入 套筒110的支撐凹槽110a’而第一偏心銷13〇的第一作用Conventional lens radial centering cracks most often use a screw to directly drive the lens', e.g., U.S. Patent No. 3,989,358. This U.S. patent discloses the use of a precision screw directly against the side of the lens and the other side of the lens is provided with a top pin that uses a spring to provide spring force. Therefore, turn the screw to fine tune the position of the lens's optical axis. However, such a design occupies a very large space and is disadvantageous for miniaturization of the lens barrel. In addition, the other drawback is that the lens barrels used in consumer products are often produced, and such products are often equipped with self-tapping screws to reduce costs. However, when the self-tapping art locks into the mirror, it will cut the lens and pollute the lens. The third drawback is that this setting = easy to find the nominal position of the lens (nGminal pQsitiQn). The nominal position is the starting position of the centering, and the centering is the most from the nominal position. In addition, the 'spring's tilting force needs to be carefully calculated during the design. ^ There will be elastic fatigue problems in long-term use. Similar patents are still =1^38797〇#, which have too many problems. The patents for screw-like lenses are, for example, the US patent Na Ts 2, which touches 61589 I. The screws exposed in these American arteries do not directly hold the lens ^ against the lens barrel. In other words, these US patents are also empty and large, which is not conducive to miniaturization. The second type of aligning device, the snail I30528250102TW 21655 twf.d〇c/e pattern disclosed in U.S. Patent No. 5,542, is incorporated. This patent discloses that there are a plurality of sets of female threads around the inside of the frame of the lens barrel, and the lens support frame can select a center of a particular female thread different from the sun. The center of the female thread is located at the center of the lens barrel. In addition, there are groups and mirrors. There is a slight displacement between the centers of the barrels. Therefore, the center of the snail 2 is the centering position is less than (10) positioning, and the = (4) metering is changed. The amount of centering can not be changed arbitrarily. Another type of eccentric pin commonly used to adjust the lens or mirror position =S=, adjusts the axial position of the lens instead of the steering position. - In addition, other patents for adjusting the lens with an eccentric pin, such as the Japanese Patent Publication No. 60-60, have the disadvantage that the axis of the eccentric pin is parallel to the axis 1 of the eccentric pin. Therefore, the adjustment tool cannot be accessed when the lens is between the two mirrors. In addition, since there are several grooves to be machined at the edge of the lens, the groove will add a lot of cost. SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide an optical lens for adjusting the center of the lens between the mirror groups. For the above or other purposes, the present invention provides an optical lens comprising a sleeve, at least a first lens, a first eccentric shaft, a second eccentric shaft, a fixed ring and a second lens, wherein A lens is disposed within the sleeve. The first eccentric shaft and the second eccentric shaft are disposed on the sleeve, and the first eccentric shaft is at an angle to the axis of the second eccentric shaft. The fixing ring is disposed on the sleeve, and the fixing ring has a first groove and a second groove respectively accommodating the first I30528^950102TW 2i655twfd〇c/e eccentric shaft and the second eccentric shaft. The second lens is disposed within the stationary ring. The first eccentric shaft or the second eccentric shaft rotates to drive the retaining ring to change the relative position between the optical axis of the second lens and the centerline of the sleeve. In an embodiment of the invention, the included angle may be 90 degrees. In an embodiment of the invention, the first eccentric shaft includes two first fixing portions and a first acting portion connecting the first fixing portions. In an embodiment of the invention, the first eccentric shaft further includes a first urging portion coupled to one of the first fixing portions, and the first urging portion has a first groove. In an embodiment of the invention, the first fixing portion and the first acting portion may be a cylinder, and an axis of the first fixing portion is spaced apart from an axis of the first acting portion by a predetermined distance. In an embodiment of the invention, the first fixing portion may be a cylinder, and the first acting portion may be a cam. In an embodiment of the invention, the second eccentric shaft includes two second fixing portions and a second acting portion connecting the second fixing portions. In an embodiment of the invention, the second eccentric shaft further includes a second urging portion coupled to one of the second fixing portions, and the second urging portion has a second groove. In an embodiment of the invention, the second fixing portion and the second acting portion may be cylindrical bodies, and an axis of the second fixing portion is spaced apart from an axis of the second acting portion by a predetermined distance. In an embodiment of the invention, the second fixing portion may be a cylinder, and the second acting portion may be a cam. I3052&25〇i〇2tw 21655twf.doc/e In the embodiment of the present invention, the sleeve has a plurality of embossed concave shapes, and the first fixed portion and the second fixed portion are accommodated. Gastric Knife In one embodiment of the invention, the second lens and the retaining ring may be integrally formed. In an embodiment of the invention, the optical lens further includes a retainer assembly with the sleeve to fix the retaining ring, the second lens, and the first eccentric shaft of the eccentric shaft. In one embodiment of the present invention, the retainer has a plurality of elastic pieces that press the second lens to determine the relative position between the second lens and the sleeve. Based on the above, the present invention adopts the first eccentric shaft and the first The second eccentric shaft adjusts the position of the second lens, so that the present invention can improve the position of the second lens by adjusting the position of the second lens without increasing the precision of the parts and assembly. The features, advantages and advantages will be more apparent. The following is a detailed description of the preferred embodiment and the following drawings. [Embodiment] FIG. 1 is a combination of an optical lens according to an embodiment of the present invention: and FIG. 2 is an exploded view of an optical lens according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2 simultaneously, the optical lens 1 套筒 - sleeve no, at least one first lens 12 〇, a first eccentric shaft 13 〇, and two second eccentric shaft 14 of the present embodiment. - a retaining ring 15 () and a second lens 16. , where ^ lens 12 〇酉 has been placed in the sleeve u〇e. The first eccentric shaft 13 〇 and the second shaft 140 are disposed on the sleeve 11 ,, and the first eccentric shaft is at a loss angle to the axis of the second I3052S 2501 ° 2 tw 21655 twf.doc/e offset t-axis 140. In the present embodiment, the included angle is preferably about 90 degrees. However, in another embodiment, the inflammatory angle may be other angles 1 = the ring 150 is disposed on the sleeve U0, and the second lens (10) is disposed on the sleeve Solid, 150 inside. Further, the fixing ring 150 has a first groove 150a and a first groove 15b' to accommodate the first eccentric shaft 13A and the second eccentric shaft, respectively. Each component will be described in detail below. Figure 3A is not a front view of the first-eccentric axis in Figure 1, but a side view of the first-eccentric axis in Figure 1. Please refer to Figure 3A and Figure 3B simultaneously, the first eccentric shaft 13〇 includes a second first fixing portion 132 and a first acting portion 134 connected between the first fixing portion 132. Further, in the present κ embodiment, the '$- fixing portion 132 and the first acting portion 134 are cylindrical. And the axis 132a of the first fixing portion 132 is separated from the axis 134a of the first acting portion 134 by a predetermined distance. However, in another embodiment, the first fixing portion 132 may be a cylinder and the first function The portion 134 may be a cam. In the present embodiment, the sleeve 110 has a plurality of supporting grooves u 〇 a, which are accommodating the first fixing portion 132. In other words, both ends of the first eccentric shaft 13 鲁 are defeated into the support. The first eccentric shaft 13A may further include a first urging portion 136 connected to the first fixing portion 132 for the rotation of the first eccentric shaft 130, which is more precisely controlled. ―, and the first urging portion 130 has a first groove 136a. Therefore, the user can accurately pass the first groove 136a. The first eccentric shaft 130 is moved. Referring to Fig. 2, in the embodiment, the first eccentric shaft 13A and the second eccentric shaft 140 have the same structure. In brief, the second eccentric shaft ι4〇 includes two second The fixing portion 142, a second acting portion 144 and a second applying force I30528295_tw 21655twf.doc/e portion 146, wherein the second acting portion 144 is connected between the second fixing portions 142' and the second applying portion 146 is connected to In addition, the first urging portion 146 has a second groove i46a for the user to accurately rotate the second eccentric shaft 140. Similarly, the support groove 11〇a is respectively valley The second fixing portion 142 and the second acting portion 144 are cylindrical, and the axis of the second fixing portion 142 is spaced apart from the axis of the second acting portion 144 by a predetermined distance (similar to FIG. 3A). However, in another embodiment, the second fixing portion 142 may be a cylinder, and the second acting portion 144 may be a cam. Although the structure of the first eccentric shaft 130 and the second eccentric shaft 140 of the present embodiment Same as, but in another embodiment, the first eccentric shaft 130 is The structure of the two eccentric shafts 14A can also be different. Fig. 4 is a perspective view of the fixing ring in Fig. 1. Referring to Fig. 2 and Fig. 4, the inner diameter of the fixed ring 15〇 and the second lens 16 The outer diameters are closely fitted to each other, so that when the fixing ring 15 is moved, the second lens 16 can be pushed simultaneously and equally. Further, the width of the first groove 15〇a and the first of the first eccentric shaft 130 The outer diameter of the acting portion 134 needs to be matched with each other. Similarly, the width of the second recess 15bb and the outer diameter of the second acting portion 144 of the second eccentric shaft 14A need to cooperate. It should be noted that in the present embodiment, the second lens 160 and the fixing ring 150 are separate members, but in another embodiment, the second lens 160 and the fixing ring 15A may also be integrated. Referring to FIG. 1 and FIG. 2 , in the embodiment, the optical lens 100 further includes a holder 170 assembled with the sleeve 以 1 , to fix the fixing ring 150 , the first lens 160 , and the first eccentric shaft 130 . And a second eccentric shaft 140. I305285295_tw 21655twf.doc/e Further, the retainer 170 has a plurality of elastic pieces 172 which pressurize a lens 160' to fix the relative position between the second lens 160 and the sleeve. The procedure for adjusting the relative position between the first lens 160 and the sleeve ho will be described in detail later. 5A to 5C are schematic views showing the adjustment of the position of the second lens. Referring to FIGS. 5A and 3B, the first fixing portion 132 of the first eccentric pin 130 is fitted into the support recess 110a' of the sleeve 110 and the first action of the first eccentric pin 13〇
部134置於固定環150的第一凹槽15〇a内。此外，利用第 一刻槽136a與第二刻槽146a的方向便可確認鏡片是否位 於公稱位置。The portion 134 is placed in the first recess 15a of the retaining ring 150. Further, it is confirmed by the direction of the first notch 136a and the second notch 146a whether or not the lens is at the nominal position.
當第一偏心銷130朝順時針方向轉動時，第二鏡片16〇 與固定環150將微量往右邊移動，如5B所示。同樣地， 當第-偏W 130朝逆時針方向轉動時，第二鏡片16〇與 固定環iso將微量往左邊移動，如圖sc所示。此外，第 =偏=銷uo的運作方式如同第—偏心銷的運作方 =。^皁而言，當第-偏心軸13〇或第二偏心輛刚轉動 二=偏心轴130或第二偏心輛140將帶動固定環15〇 二鏡片160的光軸與套筒no的中心線之間的相 由於弟一鏡片160的位置m . 徑的加工精度以及第 =微調，因此套同no内 以降低加工精度與成本。換言之， 片160曰二裴2精密度的情況下，經由調整第二鏡 的位置將可以提高解析度。此外，當第二鏡片16〇 I305285^50l02TW 21655twf.doc/e . 至適當的位置時，可輯或其财定第- 偏心軸130與第二偏心軸14〇的位置，以永久固定第二鏡 片160的位置。 綜上所述，本發明之光學鏡頭至少具有下列優點： 、相較於習知技術，本發明的光學鏡頭具有體積 小、容易調整、公稱位置明確、成本低、可永久固定等優 點，而且適用於鏡組間的鏡片對心調整。 二、在不大幅提升零件及組裝的精密度的情況下，本 • 發明的光學鏡頭能夠藉由調整第二鏡片的位置，以提升解 析度。 —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，任何熟習此技藝者，在不脫離本發明之精神 和範圍内，當可作些許之更動與潤飾，因此本發明之= 範圍當視後附之申請專利範圍所界定者為準。 ，、° 【圖式簡單說明】When the first eccentric pin 130 is rotated in the clockwise direction, the second lens 16 〇 and the fixed ring 150 move a small amount to the right as shown by 5B. Similarly, when the first-bias W 130 is rotated in the counterclockwise direction, the second lens 16'' and the fixed ring iso move a small amount to the left as shown in FIG. In addition, the = partial = pin uo operates like the first - eccentric pin operation =. In the case of soap, when the first-eccentric axis 13〇 or the second eccentric is just rotated two=the eccentric shaft 130 or the second eccentric 140 will drive the fixed ring 15 and the optical axis of the lens 160 and the center line of the sleeve no The phase between the two is due to the processing accuracy of the diameter of the lens 160 and the fine adjustment of the diameter, so the same is used to reduce the machining accuracy and cost. In other words, in the case where the sheet has a precision of 160 曰 2 , the resolution can be improved by adjusting the position of the second mirror. In addition, when the second lens 16〇I305285^50l02TW 21655twf.doc/e. is in an appropriate position, the position of the first eccentric shaft 130 and the second eccentric shaft 14〇 can be edited to permanently fix the second lens. 160 location. In summary, the optical lens of the present invention has at least the following advantages: Compared with the prior art, the optical lens of the present invention has the advantages of small size, easy adjustment, clear nominal position, low cost, permanent fixation, and the like. The lens is adjusted to the center of the lens between the groups. Second, the optical lens of the present invention can improve the resolution by adjusting the position of the second lens without greatly improving the precision of the parts and assembly. The present invention has been described above by way of a preferred embodiment, and is not intended to limit the invention, and it is intended that the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of the invention = the scope of the patent application is subject to the definition of the patent application. ,, ° [Simple description]
圖1是依照本發明之一實施例之一種光學鏡頭的組人 圖2是依照本發明之一實施例之一種光學鏡頭的爆炸 圖3A繪示圖i中的第一偏心軸的前視圖。 圖3B繪示圖1中的第一偏心軸的側視圖。 圖4緣示圖1中的固定環的立體圖。 圖5A至圖5C繪示調整第二鏡片位置的示意圖。1 is a group of optical lenses in accordance with an embodiment of the present invention. FIG. 2 is an exploded view of an optical lens in accordance with an embodiment of the present invention. FIG. 3A is a front elevational view of the first eccentric shaft of FIG. 3B is a side view of the first eccentric shaft of FIG. 1. Figure 4 is a perspective view of the retaining ring of Figure 1. 5A to 5C are schematic views showing the adjustment of the position of the second lens.
12 I305283p50102TW 21655twf.doc/e 【主要元件符號說明】12 I305283p50102TW 21655twf.doc/e [Key component symbol description]
100 ： 光學鏡頭 110 ： 套筒 110a :支撐凹槽 120 ： 第一鏡片 130 ： 第一偏心軸 132 ： 第一固定部 132a 、134a :軸線 134 ： 第一作用部 136 ： 第一施力部 136a :第一刻槽 140 ： 第二偏心軸 142 ： 第二固定部 144 ： 第二作用部 146 : 第二施力部 146a :第二刻槽 150 ： 固定環 150a :第一凹槽 150b :第二凹槽 160 ： 第二鏡片 170 ： 保持器 172 ： 彈片100: optical lens 110: sleeve 110a: support groove 120: first lens 130: first eccentric shaft 132: first fixing portion 132a, 134a: axis 134: first acting portion 136: first force applying portion 136a: The first groove 140: the second eccentric shaft 142: the second fixing portion 144: the second acting portion 146: the second urging portion 146a: the second groove 150: the fixing ring 150a: the first groove 150b: the second concave Slot 160: second lens 170: holder 172: shrapnel