200949289 玖、發明說明： 【發明所屬之技術領域】 月係有關於雜焦鏡頭’特別是有關於一種可適用於影像類 取裝置之高倍變焦鏡頭。 【先前技術】 由於變焦鏡頭具有可連續改變焦 一般鏡頭具有定焦與變焦之區分， 距值的特點’在需要經常改魏職場的情訂非常方便好用，所以200949289 玖, invention description: [Technical field of invention] The moon system relates to a char lens. In particular, there is a high-power zoom lens that can be applied to an image pickup device. [Prior Art] Since the zoom lens has the ability to continuously change the focus, the lens has the distinction between fixed focus and zoom. The characteristics of the distance value are very convenient and easy to use.
在攝心箱制非常獻。勤倍數可时爲：無光學魏、低倍變 焦和高倍魏三種。健魏料是指2至$倍鮮·，其中3倍 變焦是最大衆化的，高倍M、主要是指6至12倍鮮變焦，其中多是 以10倍變焦爲主。 在目刖使用的相機中，二群光學變焦鏡頭最常使用於三倍變焦的高 畫素鏡頭中。請賴美國專鄉6，124,984號所揭示_容，其變焦鏡 頭係由-具有負屈光度的透瓶、—具狂觀度的透餘及一具有 正屈光度的透鏡組組成’當從廣角端至望遠端作變焦動作時，需要移 動第-透鏡組與第二透鏡組，餅第—、第二透鏡組之_距離縮小， 而第二、第三透鏡組之間的距離則增加，以達到2·5倍變焦的性能。 -般而言，高倍變焦的代價是成像品質的下降。爲能啊兼顧到成 像品質及高倍變焦之特點，高倍率的變焦鏡頭中常採用四群光學變焦 的鏡頭結構。請參閱美國專利第6,590,716號所示，其揭示—種適合在 投影機上使用的遠心變焦鏡頭，包含有一具有負屈光度的第一透鏡 200949289 組、一具有正屈光度的第二透鏡組、一具有負屈光度的第三透鏡組及 一具有正屈光度的第四透鏡組，當該變焦鏡頭從廣角倍率狀態變化至 遠攝倍率狀態時，第一及第四透鏡組是固定的，第二及第三透鏡組則 可以適當移動，以調整到所需的焦距。惟，該習用技藝專利中僅提供 第一透鏡組與第二透鏡組内部分透鏡之間的條件關係，並未對可移動 的第三透鏡組與其他透鏡組之間的關係做具體的說明，但是該第三透 鏡組的移_化卻是會直接影像到魏綱郷f彡像的品質。因此設 计條件的不足將成爲影響該變焦鏡頭之投影品質的重要因素。 故，有必要提供一種新的高倍變焦鏡頭，以改善習知技術中存在的 設計缺陷，從而能夠提高投影品質。 【發明内容】 本發明之主要目的在於提供—種具有高倍率特性的變焦鏡頭，可以 有效地校正各種像差，提高成像品質。 依據本發明之上翻的，本發明提供—種魏_，婦方側至像 1人匕含.具有負屈光度的第一透鏡組、—具有負屈光度的第 透鏡、·且具有正屈光度的第三透鏡組及一具有正屈光度的第四透 鏡組。當該變絲頭由廣角端至遠攝麟行變倍時，第—透鏡組朝向 物方侧移動，第二透鏡_向像方侧移動，第三透鏡_向物方側 移動’使得1透敎鱗二透鏡組之_距離變大㈣二透鏡組 與第三透鏡社_轉，、。在咖移_四透餘。此變焦 鏡頭滿足下列條件： 200949289 ι -0-895124>(Gl+G2)/G3>-3.481630 . -0.899329<(G1 + G2)/(G3 -f G4)<-0.〇655〇7 在上述—個式子中，G1爲第一透鏡組之焦距值，G2爲第二透鏡組 之焦距值’ G3爲第三透鏡組之焦距值，G4爲第四透鏡組之焦距值， (G1+G2)爲第一透鏡組與第二透鏡組之組合焦距，（G3 + G4)爲第三 透鏡組與第四透鏡組之組合焦距。根據本發明，（G1+G2)/G3的比值是 在-0.895124至-3.481630的範圍内，其中_0895124是變焦鏡頭位於廣 Ο 角编時的比值，而_3·481360則是遠攝端的比值，當變焦鏡頭於廣角端 與遠攝端變化時，此比值會在-0.895124至-3.481630之間變化。另外， (G1+G2)/(G3 + G4)的比值是在-0.899329至-0.065507的範圍内，其中 -0.899329是變焦鏡頭位於廣角端時的比值，而_〇 〇655〇7則是遠攝端的 比值’备變焦鏡頭於廣角端與遠攝端變化時，此比值會在_〇.899329至 -0.065507之間變化。 與先刖技術相比較，本發明的變焦鏡頭採用四個透鏡組的架構，在 Φ 變倍時，由第一、第二及第三透鏡組作動，而在調焦時’則由第四透 鏡組作動。本發明變焦鏡頭的第一至第四透鏡組滿足前述的二設計條 件’可藉此而對像差做有效而良好的校正，故而對於成像品質亦有报 大提升作用。 【實施方式】 請參照第一圖所示之本發明變焦鏡頭1之各鏡頭組結構及其光路 示意圖，本發明變焦鏡頭1從物方側至像方侧依次包含有：一具有負 7 200949289 屈光度的第-透鏡組1G、—具有負屈光度料二透鏡組μ、—具有正 屈光度的第三透鏡組3G及-具有正屈光度的第四透鏡組4〇。 請參照第二及三圖所示之本發明魏鏡頭丨分別位於細端及遠 攝端時之各鏡頭組之位置關係示意圖’當該變焦鏡頭i從廣角端(即 廣角倍率）向遠攝端（即遠攝倍率）作變倍動作時，第—透鏡組關 朝向物方側（即第二圖及第三圖中的左侧）移動，第二透鏡組2〇係朝 向像方側（即第二圖及第三圖中的右側）移動，第三透鏡組3〇係朝向 物方側移動，使得第—透鏡組1G與第二透敎2()之⑽距離變大， 而第二透鏡组2G與第三透鏡組3G之_距離變小，藉此達成變倍目 的。故，本發日月之變焦鏡頭i中的第一、第二及第三透鏡組ι〇、加及 3〇構成-變倍系、統，藉由第一、第二及第三透鏡組1〇、2〇及3〇之作 動而達成變倍的目的。本發明之變焦鏡頭！中的第四透鏡組4〇係做為 一調焦系統’亦即在調焦時需要移動第四透鏡組4〇，藉此可以使不同 物距所形成的影像皆能調整成像於像平面（IMA) 5〇上，從而提高成 像品質。 本發明第-透鏡組1G從物方侧起依次包含有：—膠合透鏡，係由 負透鏡U與—正透鏡L2組成，用以橋正球差；以及-正透鏡L3， 其爲一凸凹透鏡，凸面朝向物方，凹面朝向像方。 本發明第二透鏡組20從物方側起依次包含有：-負透鏡L4，其兩 面均爲非球面：以及—齡透鏡，細-貞透鏡L5 (例如雙ω透鏡） 與一正透鏡L6 (例如雙凸透鏡）所組成。 200949289 本發明第二透鏡組30從物方側起依次包含有：一正透鏡L7(例如 雙凸透鏡~正透鏡L8 (例如雙凸透鏡），其兩面均爲非球面；以及 透鏡係由一負透鏡L9 (例如凸面朝向物方的凸凹透鏡）與— 正透鏡L1G (例如凸面朝向物方的凸凹透鏡）組成。It is very dedicated in the carton system. The duty multiplier can be: no optical Wei, low magnification, and high magnification. Jianwei material refers to 2 to $ times fresher, of which 3x zoom is the most popular, high magnification M, mainly refers to 6 to 12 times the fresh zoom, most of which is based on 10x zoom. Among the cameras used, the two-group optical zoom lens is most commonly used in a high-definition lens with a three-fold zoom. Please refer to the US hometown number 6,124,984. The zoom lens consists of a bottle with a negative diopter, a diffuse eccentricity, and a lens group with positive diopter. When the telephoto end is zooming, the first lens group and the second lens group need to be moved, the distance between the second and second lens groups is reduced, and the distance between the second and third lens groups is increased to reach 2 · 5x zoom performance. In general, the cost of high-power zoom is a drop in imaging quality. In order to achieve both image quality and high-magnification zoom, a high-magnification zoom lens often uses a four-group optical zoom lens structure. See U.S. Patent No. 6,590,716, which discloses a telecentric zoom lens suitable for use on a projector, comprising a first lens 200949289 group having a negative refracting power, a second lens group having a positive refracting power, and a negative lens group. a third lens group of diopter and a fourth lens group having positive refracting power, the first and fourth lens groups are fixed, the second and third lenses when the zoom lens changes from a wide-angle magnification state to a telephoto magnification state The group can be moved appropriately to adjust to the desired focal length. However, in the prior art patent, only the conditional relationship between the first lens group and a part of the lens in the second lens group is provided, and the relationship between the movable third lens group and the other lens groups is not specifically described. However, the shifting of the third lens group directly affects the quality of the image. Therefore, the lack of design conditions will become an important factor affecting the projection quality of the zoom lens. Therefore, it is necessary to provide a new high-magnification zoom lens to improve the design defects existing in the prior art, thereby improving the projection quality. SUMMARY OF THE INVENTION The main object of the present invention is to provide a zoom lens having high rate characteristics, which can effectively correct various aberrations and improve image quality. According to the present invention, the present invention provides a first lens group having a negative refracting power, a first lens group having a negative refracting power, a first lens group having a negative refracting power, and a first refracting power. A three lens group and a fourth lens group having positive refracting power. When the variable head is zoomed from the wide-angle end to the telephoto end, the first lens group moves toward the object side, the second lens _ moves toward the image side, and the third lens _ moves toward the object side to make 1 The _ scale two lens group _ distance becomes larger (four) two lens group and the third lens society _ turn,,. In the coffee shift _ four. This zoom lens satisfies the following conditions: 200949289 ι -0-895124>(Gl+G2)/G3>-3.481630 . -0.899329<(G1 + G2)/(G3 -f G4)<-0.〇655〇7 In the above formula, G1 is the focal length value of the first lens group, G2 is the focal length value of the second lens group 'G3 is the focal length value of the third lens group, and G4 is the focal length value of the fourth lens group, (G1) +G2) is the combined focal length of the first lens group and the second lens group, and (G3 + G4) is the combined focal length of the third lens group and the fourth lens group. According to the present invention, the ratio of (G1+G2)/G3 is in the range of -0.895124 to -3.481630, where _0895124 is the ratio of the zoom lens at the wide angle, and _3·481360 is the ratio of the telephoto end. When the zoom lens changes between the wide-angle end and the telephoto end, the ratio will vary from -0.895124 to -3.481630. In addition, the ratio of (G1+G2)/(G3 + G4) is in the range of -0.899329 to -0.065507, where -0.899329 is the ratio of the zoom lens at the wide-angle end, and _〇〇655〇7 is the telephoto When the ratio of the end of the zoom lens changes between the wide-angle end and the telephoto end, the ratio will vary from _〇.899329 to -0.065507. Compared with the prior art, the zoom lens of the present invention adopts a structure of four lens groups, which is operated by the first, second and third lens groups when Φ is zoomed, and is then operated by the fourth lens when focusing Group action. The first to fourth lens groups of the zoom lens of the present invention satisfy the aforementioned two design conditions, whereby the aberration can be effectively and accurately corrected, and thus the image quality is also greatly improved. [Embodiment] Referring to the lens group structure and the optical path diagram of the zoom lens 1 of the present invention shown in the first figure, the zoom lens 1 of the present invention includes, in order from the object side to the image side, a negative 7 200949289 diopter. The first lens group 1G, has a negative diopter two lens group μ, a third lens group 3G having positive refracting power, and a fourth lens group 4 具有 having positive refracting power. Please refer to the positional relationship diagram of each lens group at the thin end and the telephoto end respectively according to the second and third figures of the present invention. When the zoom lens i is from the wide-angle end (ie, wide-angle magnification) to the telephoto end (ie, telephoto magnification) When the zoom operation is performed, the first lens group is moved toward the object side (ie, the left side in the second and third figures), and the second lens group 2 is oriented toward the image side (ie, The second lens group 3 moves toward the object side, so that the distance between the first lens group 1G and the second lens 2 (10) becomes larger, and the second lens The distance between the group 2G and the third lens group 3G becomes smaller, thereby achieving the purpose of zooming. Therefore, the first, second, and third lens groups ι 〇 and 〇 in the zoom lens i of the present day and the month constitute a variator system, and the first, second, and third lens groups 1 〇, 2〇 and 3〇 act to achieve the purpose of zooming. The zoom lens of the present invention! The fourth lens group 4 is used as a focusing system, that is, the fourth lens group 4〇 needs to be moved during focusing, so that images formed by different object distances can be adjusted and imaged on the image plane ( IMA) 5 ,, thus improving the image quality. The first lens group 1G of the present invention comprises, in order from the object side, a cemented lens composed of a negative lens U and a positive lens L2 for bridge positive spherical aberration, and a positive lens L3 which is a convex-concave lens. The convex surface faces the object side, and the concave surface faces the image side. The second lens group 20 of the present invention comprises, in order from the object side, a negative lens L4 having aspheric surfaces on both sides: and an age-old lens, a fine-twist lens L5 (for example, a double ω lens) and a positive lens L6 ( For example, a lenticular lens. 200949289 The second lens group 30 of the present invention comprises, in order from the object side, a positive lens L7 (for example, a lenticular lens to a positive lens L8 (for example, a lenticular lens), both surfaces of which are aspherical surfaces; and the lens system is composed of a negative lens L9. (for example, a convex-concave lens with a convex surface facing the object side) and a positive lens L1G (for example, a convex-concave lens with a convex surface facing the object side).
本發明第四透鏡組從物方側起依次包含# : -正透鏡L1卜其 在所不的實侧巾，雙面均爲凸面，且其可制單面爲非_的設計， 在本實施例中，該正透鏡L11之朝向物方側之凸面麟球面；以及— 負透鏡L12 (例如—凹面朝向物方的凹凸透鏡）。 本發明第-透鏡組1〇與第二透鏡組2〇之間具有第一可變間距 ⑼），第二透鏡組2G與第三透鏡組％之間具有第二可變間距⑽， 第-透鏡組3G與第四透鏡組*之間具有第三可變間距⑽），第四透 鏡組40與像平面（IMA) %之間具有細可賴距⑼）。 本發明變紐頭1還包含有—細ST〇，位於第三透鏡組30之物 方侧，並可以舆該第三透鏡組3G -起移動。 在本發明變焦鏡頭i之第四透鏡組4〇之像方側還設置有一平行板 -可以疋任何適當的光學元件或具有適當光學顧的平板，用來 改善像平面（IMA) 5G上的影像效果。 本發明變焦鏡頭1適用於高倍變焦鏡頭，可透過第一、第二及第三 鏡組1〇、20及30之三群的作動來達到變倍的效果並可透過第四 透鏡組40之作練_難的效果，讀高雜品質。 之透鏡組10 爲能進—步得職好的雜品質，本㈣變焦鏡頭！ 9 200949289 v 20、30及40需滿足以下條件·· . -0.895124>(G1+G2)/G3>-3.481630 (1) -0.899329<(G1 + G2)/(G3 + G4)<-0.065507 (2) 在上述式子（1)與（2)中，G1爲第一透鏡組10之焦距值；G2 爲第二透鏡組20之焦距值；G3爲第三透鏡組3〇之焦距值；G4爲第四 透鏡組40之焦距值；（G1+G2)爲第一透鏡組1〇與第二透鏡組2〇之 組合焦距；以及（G3+G4 )爲第三透鏡組30與第四透鏡組40之組合 〇 焦距。根據本發明’（〇1+〇2)/〇3的比值是在-0.895124至-3.481630的 範圍内，其中-0.895124是變焦鏡頭1位於廣角端時的比值，而_3.48136〇 則是遠攝端的比值，當變焦鏡頭1於廣角端與遠攝端變化時，前述的 比值會在-0.895124 至-3.481630 之間變化。另外，（G1+G2)/(G3+G4) 的比值是在-0.899329至-0.065507的範圍内，其中_〇·899329是變焦鏡 頭1位於廣角端時的比值，而-0.065507則是遠攝端的比值，當變焦鏡 頭1於廣角端與遠攝端變化時，前述的比值會在-0.899329至-0.065507 〇 之間變化。 本發明變焦鏡頭1在具體實施過程中之數值實施例如下表一所示: 200949289 表一The fourth lens group of the present invention comprises # in the order from the object side: - the positive lens L1 is in the solid side of the towel, the both sides are convex, and the design of the single side is non- _, in this embodiment In the example, the convex lenticular surface of the positive lens L11 facing the object side; and the negative lens L12 (for example, the concave-convex lens whose concave surface faces the object side). The first lens group 1〇 and the second lens group 2〇 have a first variable pitch (9)), and the second lens group 2G and the third lens group% have a second variable pitch (10), a first lens. There is a third variable pitch (10) between the group 3G and the fourth lens group*, and a fine distance (9) between the fourth lens group 40 and the image plane (IMA)%. The change head 1 of the present invention further includes a fine ST turn located on the object side of the third lens group 30 and movable from the third lens group 3G. In the image side of the fourth lens group 4 of the zoom lens i of the present invention, a parallel plate is further provided - any suitable optical element or a plate having a suitable optical lens for improving the image on the image plane (IMA) 5G. effect. The zoom lens 1 of the present invention is suitable for a high-magnification zoom lens, and can achieve the zoom effect through the operation of the three groups of the first, second, and third lens groups 1 〇, 20, and 30 and can pass through the fourth lens group 40. Practice _ difficult effect, read high quality. The lens group 10 is a miscellaneous quality that can be used for the step-by-step, this (four) zoom lens! 9 200949289 v 20, 30 and 40 must meet the following conditions: -0.895124>(G1+G2)/G3>-3.481630 (1) -0.899329<(G1 + G2)/(G3 + G4)<- 0.065507 (2) In the above formulas (1) and (2), G1 is the focal length value of the first lens group 10; G2 is the focal length value of the second lens group 20; G3 is the focal length value of the third lens group 3〇 ; G4 is the focal length value of the fourth lens group 40; (G1+G2) is the combined focal length of the first lens group 1〇 and the second lens group 2〇; and (G3+G4) is the third lens group 30 and the fourth lens group The combination of lens groups 40 is the focal length. According to the invention, the ratio of '(〇1+〇2)/〇3 is in the range of -0.895124 to -3.481630, where -0.895124 is the ratio of the zoom lens 1 at the wide-angle end, and _3.48136〇 is the telephoto end The ratio, when the zoom lens 1 is changed at the wide-angle end and the telephoto end, the aforementioned ratio will vary from -0.895124 to -3.481630. In addition, the ratio of (G1+G2)/(G3+G4) is in the range of -0.899329 to -0.065507, where _〇·899329 is the ratio of the zoom lens 1 at the wide-angle end, and -0.065507 is the telephoto end. The ratio, when the zoom lens 1 is changed at the wide-angle end and the telephoto end, the aforementioned ratio will vary from -0.899329 to -0.065507 。. The numerical implementation of the zoom lens 1 of the present invention in the specific implementation process is as shown in the following Table 1: 200949289 Table 1
❹ ❹ _^(無窮大） _J---^ 表面序號S1至S24依次表示從物方側至像方側之各鏡片表面， 圖中所才不不’厚度則表不一鏡片表面至相鄰鏡片表面之距離， 。之對於同_透鏡的二表面而言即為該透鏡的厚度，而對於二相鄰 相鄰表面而δ即為該二透鏡間的距離，例如表一中表面序號^ 對應的厚度值即為表面S1與S2間的距離，脚為透鏡u的厚度， 序號S3所對應的厚度值即為表面幻（即透鏡L2的像方側表面 200949289 與表面S4 (即透鏡L3的物方側表面）間的距離，亦即為透鏡乙2與。 間的距離。另外要注意到，膝合在—起的二透鏡因為有—共用的表面， 故在表一中僅具有三個表面序號，例如透鏡L1及L2在表一中共有三 個表面，即SI、S2、S3，其中S2係二者共有。 依照上表數值進行設計，可得到： 第一透鏡組10與第二透鏡組20之組合焦距（G1+G2)在-13,64mm (廣角端）至-52.12mm (遠攝端）之間。第二透鏡組2〇與第三透鏡組 30之組合焦距（G2+G3)在663職（廣角端）至⑷12咖（遠攝端） 之間。第三透鏡組30與第四透鏡組40之組合焦距(G3+G4 )在14 49麵 廣角端）至795.64mm (遠攝端）之間。 依照上表數值進行設計，本發明變焦鏡頭1之縱向像差、像場彎 曲、畸變像差、彗星像差、相對照度及MTF特性均具有良好的校正， 如第四A至四F圖及第五A至五F圖所示。 表于、上所述，本發明確已符合發明專利之要件，爰依法提出專利申 請。惟，以上所述者僅爲本發明之較佳實施方式，舉凡熟習本案技術 之人士援依本發明之精神所作之等效修飾或變化，皆涵蓋於後附之申 清專利範圍内。 【圖式簡單說明】 第一圖係本發明變焦鏡頭之各鏡頭組結構及其光路示意圖。 第二圖係本發明變焦鏡頭位於廣角端時之各鏡頭組之位置關係示意圖。 第三圖係本發明變焦鏡頭位於遠攝端時之各鏡頭組之位置關係示意圖。 12 200949289 第四Α至四F圖係依據所述數值實施例，本發明變焦鏡頭位於廣角端 時的所形成的縱向像差、像場彎曲、畸變像差、彗星像差、相對照 度及MTF特性之曲線示意圖。 第五A至五F圖係依據所述數值實施例，本發明變焦鏡頭位於遠攝端 時的所形成的縱向像差、像場彎曲、畸變像差、彗星像差、相對照 度及MTF特性之曲線示意圖。 【主要元件符號說明】❹ ❹ _^ (infinity) _J---^ Surface numbers S1 to S24 sequentially represent the surface of each lens from the object side to the image side, and the thickness is not the same as the lens surface to the adjacent lens. The distance from the surface, . For the two surfaces of the same lens, the thickness of the lens is obtained, and for two adjacent adjacent surfaces, δ is the distance between the two lenses. For example, the thickness value corresponding to the surface number ^ in Table 1 is the surface. The distance between S1 and S2, the foot is the thickness of the lens u, and the thickness value corresponding to the number S3 is the surface illusion (ie, the image side surface 200949289 of the lens L2 and the surface S4 (ie, the object side surface of the lens L3) The distance is also the distance between the lens and the lens. It should be noted that the two lenses with the knees have a common surface, so there are only three surface numbers in Table 1, such as the lens L1 and L2 has three surfaces in Table 1, namely, SI, S2, and S3, of which S2 is common to both. According to the numerical values of the above table, the combined focal length of the first lens group 10 and the second lens group 20 can be obtained (G1+ G2) between -13,64 mm (wide-angle end) to -52.12 mm (telephoto end). The combined focal length (G2+G3) of the second lens group 2〇 and the third lens group 30 is at 663 (wide-angle end) Between (4)12 coffee (telephoto end). Combined focal length of the third lens group 30 and the fourth lens group 40 (G3+G4) Between 14 49 wide-angle end) and 795.64 mm (telephoto end). According to the numerical values in the above table, the longitudinal aberration, field curvature, distortion aberration, coma aberration, phase contrast and MTF characteristics of the zoom lens 1 of the present invention have good corrections, such as the fourth to fourth F maps and the first Figure 5A to V are shown in Figure F. As stated above and above, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art to the spirit of the present invention are included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a schematic diagram of the structure of each lens group of the zoom lens of the present invention and its optical path. The second figure is a schematic diagram showing the positional relationship of each lens group when the zoom lens of the present invention is located at the wide angle end. The third figure is a schematic diagram showing the positional relationship of each lens group when the zoom lens of the present invention is located at the telephoto end. 12 200949289 The fourth to fourth F diagrams are based on the numerical embodiment, the longitudinal aberration, field curvature, distortion aberration, coma aberration, phase contrast and MTF characteristics of the zoom lens of the present invention at the wide angle end A schematic diagram of the curve. The fifth to fifth F diagrams are based on the numerical embodiment, and the longitudinal aberration, field curvature, distortion aberration, coma aberration, phase contrast, and MTF characteristics of the zoom lens of the present invention at the telephoto end Schematic diagram of the curve. [Main component symbol description]
變焦鏡頭 1 第二透鏡組 20 第四透鏡組 40 第一透鏡組10 第三透鏡組30 像平面 50Zoom lens 1 second lens group 20 fourth lens group 40 first lens group 10 third lens group 30 image plane 50
平行板 60 光圈 STO 透鏡LI、L2、L3、L4、L5、L6、L7、L8、L9、L10、Lll、L12 Ο 13Parallel plate 60 Aperture STO lens LI, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12 Ο 13